CN208572480U

CN208572480U - A kind of power module and LED straight lamp

Info

Publication number: CN208572480U
Application number: CN201820090638.2U
Authority: CN
Inventors: 刘新通; 熊爱明
Original assignee: Jiaxing Super Lighting Electric Appliance Co Ltd
Current assignee: Jiaxing Super Lighting Electric Appliance Co Ltd
Priority date: 2017-01-19
Filing date: 2018-01-19
Publication date: 2019-03-01
Anticipated expiration: 2028-01-19
Also published as: CN208623941U

Abstract

The utility model discloses a kind of power module and LED straight lamps.The power module includes: the rectification circuit, filter circuit and driving circuit being sequentially connected, wherein rectification circuit, filter circuit and drive circuitry arrangement are that the signal of output is made to circulate on same electric power loop, the power module further includes detection decision circuit, control circuit and current-limiting circuit, it detects decision circuit and couples electric power loop, and detect the target sampled signal on electric power loop to generate testing result signal；The output end of control circuit coupling detection decision circuit generates corresponding control signal according to the signal characteristic of testing result signal to receive testing result signal, and wherein signal characteristic indicates whether that electric shock risk exists；Current-limiting circuit couples control circuit and electric power loop, to receive control signal, and decides whether to execute current-limiting operation to electric power loop in response to control signal.Power module provided by the utility model can reduce user and electric shock risk occurs.

Description

A kind of power module and LED straight lamp

Technical field

The utility model relates to field of lighting appliances more particularly to a kind of power modules and LED straight lamp.

Background technique

LED lighting technology it is positive fast-developing and instead of traditional incandescent lamp and fluorescent lamp.Compared to being filled with indifferent gas For the fluorescent lamp of body and mercury, LED straight lamp need not filling mercury.Therefore, various by seeming conventional fluorescent bulbs and lamp In the lighting system of household or workplace that the illumination option such as pipe is dominated, LED straight lamp is it is hardly surprising that be increasingly becoming people Height expect illumination option.The advantages of LED straight lamp the durability comprising promotion and service life and compared with low power consuming.Therefore, After considering all factors, LED straight lamp will be the illumination option of escapable cost.

Light emitting diode (i.e. LED straight lamp) fluorescent tube on the market replaces existing lighting device to replace fluorescent lamp at present There are mainly two types of the modes of pipe.

One is the compatible type light-emitting diode lamp tube of ballast (T-LED lamp), in the route for not changing original lighting device On the basis of, traditional fluorescent tube is directly replaced with light-emitting diode lamp tube.Another is ballast bypass type (Ballast by- Pass) light-emitting diode lamp tube saves traditional ballast on circuit, and alternating current is directly connected to light-emitting diode lamp tube.Afterwards Person is suitable for newly-decorated environment, using new driving circuit and light-emitting diode lamp tube.Wherein, the compatible type LED light of ballast Pipe may be generally referred to as " Type-A " type LED lamp tube, and the ballast bypass type LED lamp tube with the driving of built-in fluorescent tube can generally claim For " Type-B " type LED lamp tube.

Under existing technology, because lamp holder corresponding to Type-B type light-emitting diode lamp tube is to be directly accessed city's telecommunications Number and do not first pass through ballast, when LED straight lamp be Double-End Source when, if one of the both-end of LED straight lamp has been inserted Enter lamp holder and the other end is not yet inserted into lamp holder, user may touch the metal for being not inserted into lamp holder end or conductive portion Timesharing, the risk got an electric shock.

Many big factories of well-known international lighting also Type- due to being limited to above-mentioned technical problem for being driven with Double-End Source Type B LED fluorescent tube technology can not have further propulsion.By taking unusual Lighting Inc, the U.S. (GE Lighting) as an example, in its institute The propaganda (collation on July 8th, 2014) of disclosed entitled " Considering LED tubes " and entitled " Dollars& In the propaganda of Sense:Type B LED Tubes " (collation on October 21st, 2016), unusual Lighting Inc is referred to again and again There is Type-B type LED fluorescent tube the defects of electric shock risk can not be overcome, therefore not do further with regard to the fluorescent tube of Type-B type Product commercialization is considered with sale.

In view of the above problem, the present invention and embodiment set forth below.

Utility model content

The utility model provides a kind of power module, is reduced with realizing since correctly installation does not lead to user to LED straight lamp The risk got an electric shock.

In a first aspect, the utility model embodiment provides a kind of power module, it is suitable for the power supply of LED straight lamp, it is described LED straight lamp includes light-emitting diode (LED) module, which includes: that rectification circuit, filter circuit, driving circuit, detection are sentenced Determine circuit, control circuit and current-limiting circuit, wherein the input terminal of the rectification circuit inputs external drive signal, the filtering The input terminal of circuit and the rectification circuit are used to export the external drive signal is rectified after believe after obtained rectification Number output end with output end be connected, the filter circuit be used to export will the rectified signal filter after after obtained filtering The output end of signal is connected with the input terminal of the driving circuit, and the driving circuit is for exporting according to the filtered signal The output end of obtained driving signal is connected with the light-emitting diode (LED) module, wherein the rectification circuit, the filter circuit And the drive circuitry arrangement is that the signal of output is made to circulate on same electric power loop；

The detection decision circuit couples the electric power loop, and detects the target sampled signal on the electric power loop To generate testing result signal；

The control circuit couples the output end of the detection decision circuit to receive the testing result signal, and foundation The signal characteristic of the testing result signal generates corresponding control signal, wherein the signal characteristic indicates whether electric shock wind Danger exists；

The current-limiting circuit couples the control circuit and the electric power loop, to receive the control signal, and Decide whether to execute current-limiting operation to the electric power loop in response to the control signal,

Wherein, the current-limiting circuit is preset as not executing the circuit mode of the current-limiting operation；

Wherein, exist when the control circuit is determined with electric shock risk according to the signal characteristic of the testing result signal When, the current-limiting circuit is switched to the circuit mode for executing the current-limiting operation, uses in response to the control of the control signal Enable current limitation on the electric power loop to being lower than safe current value；And

It is described in the presence of the control circuit determines oncontacting risk according to the signal characteristic of the testing result signal Current-limiting circuit maintains the circuit mode for not executing the current-limiting operation in response to the control of the control signal.

In above scheme, optionally, further includes: detection path circuit, the detection decision circuit pass through the detection Path circuit detects the target sampled signal on the electric power loop to generate testing result signal, wherein the detection path The input terminal of circuit inputs the target sampled signal, the output end of the detection path circuit and the detection decision circuit Input terminal is connected, and the detection path circuit determines for output after being converted the target sampled signal to the detection Circuit.Second aspect, the utility model embodiment additionally provide a kind of LED straight lamp, which includes: fluorescent tube and two lamps Head, two lamp cap are set to the lamp tube ends, and at least provided with the first pin on one of described two lamp cap, described At least provided with the second pin on two lamp caps are wherein another, the LED straight lamp is connect by first pin and described second Foot receives external drive signal, which further includes the power module that the utility model any embodiment provides.

In above scheme, optionally, further includes: auxiliary power module, the auxiliary power module receive the outside Driving signal, and by first pin and second pin, at least one connects described power module, wherein The auxiliary power module provides accessory power supply when the external drive is signal-powered abnormal to the power module.

In above scheme, optionally, when the external drive is signal-powered normal, the external drive signal passes through First pin and second pin are provided to the input terminal of the rectification circuit, and the external drive signal is to institute State auxiliary power module charging；And when the external drive is signal-powered abnormal, described in the auxiliary power module cutting Circuit between external drive signal and the rectification circuit, the auxiliary power module provide accessory power supply to the rectified current The input terminal on road.

In above scheme, optionally, the auxiliary power module, comprising:

Switch unit, has first end, second end and a third end, first end receive the external drive signal, its Two ends connect that the input terminal of the rectification circuit, wherein the first end and second end of the switch unit are constituted and first powered back Road, the second end of the switch unit and third end constitute the second current supply circuit, described in the conducting of the switch unit selectivity One of first current supply circuit and second current supply circuit；

Auxiliary power unit, output end connect the third end of the switch unit, described in providing from its output end Accessory power supply；And

Charhing unit, input terminal receive the external drive signal, and output end connects the auxiliary power unit Input terminal, wherein the charhing unit is used to be that the auxiliary power unit charges by the external drive signal；

Wherein, when the external drive is signal-powered normal, the first current supply circuit described in the switching means conductive is simultaneously End second current supply circuit；And when the external drive is signal-powered abnormal, the switch unit cut-off described the Simultaneously second current supply circuit is connected in one current supply circuit.

In above scheme, optionally, when the external drive is signal-powered normal, the external drive signal passes through The auxiliary power module is provided to the input terminal of the rectification circuit, and the external drive signal is to the accessory power supply Module charging；And when the external drive is signal-powered abnormal, the auxiliary power module provides the accessory power supply of itself To the input terminal of the rectification circuit.

In above scheme, optionally, the auxiliary power module, comprising:

Auxiliary power unit, has first input end, the second input terminal and output end, and first input end receives described outer Portion's driving signal, output end connect the input terminal of the rectification circuit, wherein the auxiliary power unit is used for from its output End provides the accessory power supply；And

Charhing unit, input terminal receive the external drive signal, and output end connects the auxiliary power unit Second input terminal, wherein the charhing unit is used to be that the auxiliary power unit is filled by the external drive signal Electricity,

Wherein, when the external drive is signal-powered normal, the outside that the auxiliary power unit will receive Driving signal is provided to the input terminal of the rectification circuit；And when the external drive is signal-powered abnormal, the auxiliary Power supply unit generates the input terminal that the accessory power supply is provided to the rectification circuit.

In above scheme, optionally, the auxiliary power module, comprising: energy-storage units, transformer, switching switch, the One diode, first capacitor, sampling module and chip control module, wherein

The energy-storage units include cathode output end and cathode output end；

It is described switching switch source electrode be connected and be grounded with the cathode output end, it is described switch switch grid with it is described The output end of chip control module is connected；

The Same Name of Ends of transformer, the primary side winding component of the transformer is connected with the electrode input end, the primary side The different name end of winding assembly is connected with the drain electrode of the switching switch, the Same Name of Ends of the vice-side winding component of the transformer and institute The input terminal for stating the rectification input circuit of power module is connected；

The anode of first diode, the first diode is connected with the different name end of the vice-side winding component, and described the The cathode of one diode is connected with the input terminal of the rectification input circuit of the power module；

First capacitor, the first end of the first capacitor are connected with the Same Name of Ends of the vice-side winding component, and described first The second end of capacitor is connected with the input terminal of the cathode of the first diode and the sampling module；

The output end of the sampling module is connected with the input terminal of the chip control module.

The energy-storage units include cathode output end and cathode output end；

In above scheme, optionally, the chip control module, comprising: power supply, chip, the second capacitor, the first electricity Resistance, second resistance, the second diode and 3rd resistor, the chip include discharge end, triggering end, power end and output end, In,

The discharge end is connected with the first end of the first resistor, and the second of the triggering end and the first resistor The first end at end, the first end of the second resistance, the first end of the 3rd resistor and second capacitor is connected, institute It states power end to be connected with the second end of the second resistance and the power supply, the second end of the 3rd resistor and described second The cathode of diode is connected, and the anode of second diode is connected with the output end of sampling module, and the of second capacitor Two ends ground connection；

The sampling module includes: tertiary winding component, third diode, third capacitor and the 4th resistance, wherein institute The anode for stating third diode is connected with the different name end of the tertiary winding component；The first end of the third capacitor and described the The first end of the Same Name of Ends of three winding component and the 4th resistance is connected, the second end and the third of the third capacitor The second end of connected, described 4th resistance of the cathode of diode and the input terminal of the chip control module are connected.

In above scheme, optionally, the chip control module, comprising: power supply, chip, the second capacitor, the first electricity Resistance and second resistance, the chip include discharge end, triggering end, power end and output end, wherein

The discharge end is connected with the first end of the first resistor, and the second of the triggering end and the first resistor The first end at end, the first end of the second resistance and second capacitor is connected, the power end and the second resistance Second end and the power supply be connected, the second end of second capacitor ground connection；

The sampling module includes: photoelectrical coupler, the 5th resistance and pincers pressure component, wherein

The photoelectrical coupler includes photodiode and triode, and the anode of the photodiode is electric with described first The second end of appearance is connected, and the cathode of the photodiode is connected with the first end of the 5th resistance, the photoelectrical coupler The collector of triode be electrically connected with the second end of the second resistance, the emitter of the triode of the photoelectrical coupler with The first end of the second resistance is electrically connected；The second end of 5th resistance is electrically connected with the first end of the pincers pressure component, The second end of the pincers pressure component is electrically connected with the first end of the first capacitor.

In above scheme, optionally, the chip control module, further includes: third capacitor and the 4th capacitor, the core Piece further includes reset terminal and control terminal, wherein

The reset terminal passes through the 4th capacity earth by the third capacity earth, the control terminal.

Power module provided by the embodiment of the utility model, by include be sequentially connected rectification circuit, filter circuit and Driving circuit, wherein rectification circuit, filter circuit and drive circuitry arrangement are to flow the signal of output on same electric power loop It is logical, and the target sampled signal on electric power loop is detected to generate testing result signal by detection decision circuit, so that control Circuit according to the signal characteristic of testing result signal generate corresponding control signal so that current-limiting circuit in response to controlling signal and Decide whether to execute current-limiting operation to electric power loop, wherein current-limiting circuit is preset as not executing the circuit mould of the current-limiting operation State；In the presence of control circuit is determined with electric shock risk according to the signal characteristic of testing result signal, current-limiting circuit is in response to control The control of signal processed is switched to the circuit mode for executing current-limiting operation, uses and enables current limitation on electric power loop to being lower than peace Total current value；And in the presence of control circuit determines oncontacting risk according to the signal characteristic of testing result signal, current limliting electricity Road maintains the circuit mode for not executing current-limiting operation in response to the control of control signal, solves since LED straight lamp is not accurate The problem of installing the risk for causing user that may get an electric shock realizes control circuit in the signal characteristic according to testing result signal It is determined in the presence of electric shock risk and current-limiting operation is executed by current-limiting circuit in time, and then reduce the risk that user gets an electric shock.

Detailed description of the invention

Figure 1A is a section plan, shows the lamp plate and power module of the LED straight lamp of an embodiment of the present invention Configuration inside fluorescent tube；

Figure 1B is a section plan, shows the lamp plate and power supply mould of the LED straight lamp of another embodiment of the utility model Configuration of the block inside fluorescent tube；Fig. 1 C is a section plan, shows the lamp of the LED straight lamp of another embodiment of the utility model The configuration of plate and power module inside fluorescent tube；

Fig. 2 is a section plan, shows that the bendable circuit of the lamp plate of an embodiment of the present invention LED straight lamp is soft Plate has double-layer structure；

Fig. 3 A is a perspective view, shows the bendable circuit soft board of the lamp plate of an embodiment of the present invention LED straight lamp With the pad with the printed circuit board of power supply welded connecting；

Fig. 3 B is the conducting wire schematic diagram being arranged between its both ends lamp cap along lamp plate according to an embodiment LED straight lamp；

Fig. 4 A is the lamp plate of an embodiment of the present invention and the welded partial schematic diagram of power supply；

Fig. 4 B to Fig. 4 D is the schematic diagram of the lamp plate of an embodiment of the present invention and the welding process of power supply；

Fig. 5 is a perspective view, shows the bendable circuit soft board of the lamp plate of another embodiment LED straight lamp of the utility model A circuit board assemblies are combined into the printed circuit board of power supply；

Fig. 6 is a perspective view, shows another configuration of the circuit board assemblies of Fig. 5；

Fig. 7 is a perspective view, is shown in another embodiment of the utility model, and the bendable circuit soft board of lamp plate has the double-deck line Road floor；

Fig. 8 A is the application circuit square according to the power module of the LED straight lamp of the first preferred embodiment of the utility model Schematic diagram；

Fig. 8 B is the application circuit square according to the power module of the LED straight lamp of the second preferred embodiment of the utility model Schematic diagram；

Fig. 8 C is the application circuit square according to the power module of the LED straight lamp of the utility model third preferred embodiment Schematic diagram；

Fig. 8 D is the circuit box schematic diagram according to the LED light of the first preferred embodiment of the utility model；

Fig. 8 E is the circuit box schematic diagram according to the LED light of the second preferred embodiment of the utility model；

Fig. 8 F is the circuit box schematic diagram according to the LED light of the utility model third preferred embodiment；

Fig. 8 G is the circuit box schematic diagram being connect according to the LED straight lamp of a preferred embodiment with external power supply；

Fig. 9 A is the circuit diagram according to the rectification circuit of the first preferred embodiment of the utility model；

Fig. 9 B is the circuit diagram according to the rectification circuit of the second preferred embodiment of the utility model；

Fig. 9 C is the circuit diagram according to the rectification circuit of the utility model third preferred embodiment；

Fig. 9 D is the circuit diagram according to the rectification circuit of the 4th preferred embodiment of the utility model；

Fig. 9 E is the circuit diagram according to the rectification circuit of the 5th preferred embodiment of the utility model；

Fig. 9 F is the circuit diagram according to the rectification circuit of the 6th preferred embodiment of the utility model；

Figure 10 A is the circuit box schematic diagram according to the filter circuit of the first preferred embodiment of the utility model；

Figure 10 B is the circuit diagram according to the filter unit of the first preferred embodiment of the utility model；

Figure 10 C is the circuit diagram according to the filter unit of the second preferred embodiment of the utility model；

Figure 11 A is the circuit diagram according to the LED module of the first preferred embodiment of the utility model；

Figure 11 B is the circuit diagram according to the LED module of the second preferred embodiment of the utility model；

Figure 11 C is the cabling schematic diagram according to the LED module of the first preferred embodiment of the utility model；

Figure 11 D is the cabling schematic diagram according to the LED module of the second preferred embodiment of the utility model；

Figure 11 E is the cabling schematic diagram according to the LED module of the utility model third preferred embodiment；

Figure 11 F is the cabling schematic diagram according to the LED module of the 4th preferred embodiment of the utility model；

Figure 11 G is the cabling schematic diagram according to the LED module of the 5th preferred embodiment of the utility model；

Figure 11 H is the cabling schematic diagram according to the LED module of the 6th preferred embodiment of the utility model；

Figure 11 I is the cabling schematic diagram according to the LED module of the 7th preferred embodiment of the utility model；

Figure 11 J is the circuit diagram according to the power pad of the utility model preferred embodiment；

Figure 11 K is the cabling schematic diagram according to the LED module of eight preferred embodiment of the utility model；

Figure 12 A is to be shown according to the application circuit square of the power module of the LED light of the utility model third preferred embodiment It is intended to；

Figure 12 B is the circuit box schematic diagram according to the driving circuit of the first preferred embodiment of the utility model；

Figure 12 C is the signal waveform schematic diagram according to the driving circuit of the first preferred embodiment of the utility model；

Figure 12 D is the signal waveform schematic diagram according to the driving circuit of the second preferred embodiment of the utility model；

Figure 12 E is the signal waveform schematic diagram according to the driving circuit of the utility model third preferred embodiment；

Figure 12 F is the signal waveform schematic diagram according to the driving circuit of the 4th preferred embodiment of the utility model；

Figure 12 G is the circuit diagram according to the driving circuit of the first preferred embodiment of the utility model；

Figure 12 H is the circuit diagram according to the driving circuit of the second preferred embodiment of the utility model；

Figure 12 I is the circuit diagram according to the driving circuit of the utility model third preferred embodiment；

Figure 12 J is the circuit diagram according to the driving circuit of the 4th preferred embodiment of the utility model；

Figure 13 A is the application circuit side according to the power module of the LED straight lamp of the 4th preferred embodiment of the utility model Block schematic diagram；

Figure 13 B is the circuit diagram according to the overvoltage crowbar of the utility model preferred embodiment；

Figure 14 A is a kind of structural schematic diagram for LED straight lamp that one preferred embodiment of the utility model provides；

Figure 14 B is a kind of structural schematic diagram for LED straight lamp that the utility model another preferred embodiment provides；

Figure 14 C is a kind of structural schematic diagram for LED straight lamp that the utility model another embodiment provides；

Figure 14 D is a kind of LED straight lamp including auxiliary power module that one preferred embodiment of the utility model provides Structural schematic diagram；

Figure 14 E is a kind of LED straight lamp including auxiliary power module that the utility model another preferred embodiment provides Structural schematic diagram；

Figure 14 F is the application circuit side according to the power module of the LED straight lamp of the 5th preferred embodiment of the utility model Block schematic diagram；

Figure 14 G is the application circuit side according to the power module of the LED straight lamp of the 6th preferred embodiment of the utility model Block schematic diagram；

Figure 14 H is the circuit diagram according to the auxiliary power module of the utility model preferred embodiment；

Figure 14 I is the application circuit side according to the power module of the LED straight lamp of the 7th preferred embodiment of the utility model Block schematic diagram；

Figure 14 J is to be illustrated according to the application circuit square of the auxiliary power module of the first preferred embodiment of the utility model Figure；

Figure 14 K is the application circuit side according to the power module of the LED straight lamp of the 8th preferred embodiment of the utility model Block schematic diagram；

Figure 14 L is to be illustrated according to the application circuit square of the auxiliary power module of the second preferred embodiment of the utility model Figure；

Figure 14 M is to be illustrated according to the application circuit square of the auxiliary power module of the utility model third preferred embodiment Figure；

Figure 14 N is that the configuration according to the auxiliary power module of the utility model preferred embodiment in LED straight lamp is illustrated Figure；

Figure 14 O is the configuration schematic diagram according to the auxiliary power module of the utility model preferred embodiment in lamp holder；

Figure 14 P is the application circuit square according to the LED straight tube lamp illuminating system of the first preferred embodiment of the utility model Schematic diagram；

Figure 14 Q is the application circuit square according to the LED straight tube lamp illuminating system of the second preferred embodiment of the utility model Schematic diagram；

Figure 14 R is the application circuit square according to the LED straight tube lamp illuminating system of the utility model third preferred embodiment Schematic diagram；

Figure 14 S is the structural schematic diagram for the auxiliary power module that one preferred embodiment of the utility model provides；

Figure 14 T is the circuit diagram of the auxiliary power module of the utility model first embodiment；

Figure 14 U is the circuit diagram of the auxiliary power module of the utility model second embodiment；

Figure 14 V is in timing diagram when normal condition for the auxiliary power module of the utility model preferred embodiment；

Figure 14 W is the auxiliary power module of the utility model preferred embodiment timing diagram when in an abnormal state；

Figure 15 is the application circuit square according to the power module of the LED straight lamp of the 9th preferred embodiment of the utility model Schematic diagram；

Figure 16 A is the circuit diagram according to the installation detecting module of the first preferred embodiment of the utility model；

Figure 16 B is the circuit diagram according to the detection pulse generating module of the first preferred embodiment of the utility model；

Figure 16 C is the circuit diagram according to the detection decision circuit of the first preferred embodiment of the utility model；

Figure 16 D is the circuit diagram according to the testing result latch cicuit of the first preferred embodiment of the utility model；

Figure 16 E is the circuit diagram according to the switching circuit of the first preferred embodiment of the utility model；

Figure 17 A is the circuit diagram according to the installation detecting module of the second preferred embodiment of the utility model；

Figure 17 B is the circuit diagram according to the detection pulse generating module of the second preferred embodiment of the utility model；

Figure 17 C is the circuit diagram according to the detection decision circuit of the second preferred embodiment of the utility model；

Figure 17 D is the circuit diagram according to the testing result latch cicuit of the second preferred embodiment of the utility model；

Figure 17 E is the circuit diagram according to the switching circuit of the second preferred embodiment of the utility model；

Figure 18 A is the circuit diagram according to the installation detecting module of the utility model third preferred embodiment；

Figure 18 B is to be illustrated according to the internal circuit blocks of the integrated control module of the utility model third preferred embodiment Figure；

Figure 18 C is the circuit diagram according to the pulse generation auxiliary circuit of the utility model third preferred embodiment；

Figure 18 D is the circuit diagram that auxiliary circuit is determined according to the detection of the utility model third preferred embodiment；

Figure 18 E is the circuit diagram according to the switching circuit of the utility model third preferred embodiment；

Figure 19 A is the circuit module schematic diagram according to the installation detecting module of the 4th preferred embodiment of the utility model；

Figure 19 B is the circuit diagram according to the signal processing unit of the 4th preferred embodiment of the utility model；

Figure 19 C is the circuit diagram according to the signal generation unit of the 4th preferred embodiment of the utility model；

Figure 19 D is the circuit diagram according to the signal acquisition unit of the 4th preferred embodiment of the utility model；

Figure 19 E is the circuit diagram according to the switch unit of the 4th preferred embodiment of the utility model；And

Figure 19 F is the circuit diagram according to the internal electric source detecting unit of the 4th preferred embodiment of the utility model；

Figure 20 A is the circuit diagram according to the installation detecting module of the 5th preferred embodiment of the utility model；

Figure 20 B is the circuit diagram according to the detecting path circuit of the 5th preferred embodiment of the utility model；

Figure 21 is the LED straight lamp installation condition schematic diagram according to the utility model preferred embodiment；

Figure 22 A is the application circuit side according to the power module of the LED straight lamp of the tenth preferred embodiment of the utility model Block schematic diagram；

Figure 22 B is the circuit diagram according to the driving circuit of the 5th preferred embodiment of the utility model；

Figure 22 C is the application circuit square of the power module for the LED straight lamp that one preferred embodiment of the utility model provides Schematic diagram；

Figure 22 D is the application circuit according to the power module of the LED straight lamp of the 11st preferred embodiment of the utility model Block schematic diagram；

Figure 22 E is the application circuit according to the power module of the LED straight lamp of the 12nd preferred embodiment of the utility model Block schematic diagram；

Figure 23 A is the signal sequence schematic diagram according to the power module of the first preferred embodiment of the utility model；

Figure 23 B is the signal sequence schematic diagram according to the power module of the second preferred embodiment of the utility model；And

Figure 23 C is the signal sequence schematic diagram according to the power module of the utility model third preferred embodiment.

Specific embodiment

The utility model proposes a kind of new LED straight lamp, on the basis of glass lamp to solve in background technique The problem of mentioning and the above problem.It is understandable to enable the above objects, features, and advantages of the utility model to become apparent, under Face is described in detail specific embodiment of the utility model in conjunction with attached drawing.The narration of following various embodiments of the utility model is only Be in order to illustrate and be illustration, be not meant as the whole embodiments of the utility model or limit the invention to specific reality Apply example.

In addition it needs first to illustrate, herein in order to clearly state each utility model feature of this exposure and with multiple implementations The mode point of example is described as follows with regard to each embodiment.But do not mean that each embodiment is only capable of individually implementing.It is familiar with the skill of this field Art personnel can according to demand from being about to feasible implementations example and arrange in pairs or groups design together, or by different embodiments can band change According to design requirement, voluntarily band changes components/modules.In other words, the embodiment that this case is taught is not limited only to described in the following example Aspect, further included in feasible situation, the band between each embodiment/components/modules changes and permutation and combination, in this conjunction It first chats bright.

Though applicant in previous case, such as: in CN105465640U, propose using flexible circuit board and reach At the improvement mode for reducing electric leakage accident, section Example, which can be combined with present application using circuit mode, will have more significantly Effect.

Figure 1A is please referred to, Figure 1A is to show that the lamp plate of the LED straight lamp of an embodiment of the present invention and power module exist The section plan of configuration inside fluorescent tube.LED straight lamp includes lamp plate 2 and power supply 5, and wherein power supply 5 can be modular type State, that is to say, that power supply 5 can be to be integrated in integrated power module.Power supply 5 can be integrated single unit (for example, All elements of power supply 5 are all set in an ontology) and be set in a lamp cap of fluorescent tube one end.Alternatively, power supply 5 can be Two separation components (for example, the element of power supply 5 is divided into two parts) and be respectively arranged in two lamp caps.

In the present embodiment, power supply 5 is depicted as being integrated into for a module (beneath title power module 5), and institute It states power module 5 and is parallel to the axial cyd configuration of fluorescent tube among lamp cap.More specifically, the axial cyd of the fluorescent tube is Refer to direction pointed by the axial line of fluorescent tube, it can be vertical with the end wall of lamp cap.Power module 5 is parallel to the axial cyd of fluorescent tube Mean that the power module circuitry plate configured with electronic component is parallel with axial direction cyd, that is, the normal of circuit board is orthogonal to axial direction cyd.Wherein, position, the upside axial direction cyd or the downside that axial cyd passes through can be set in power module 5 in various embodiments (for schema), the utility model is not limited.

Figure 1B is please referred to, Figure 1B is the lamp plate and power module for showing the LED straight lamp of another embodiment of the utility model The section plan of configuration inside fluorescent tube.The main difference of the present embodiment and earlier figures 1A embodiment is power module 5 The axial cyd for being perpendicular to fluorescent tube is configured in lamp cap, that is, can be parallel with the end wall of lamp cap.In the present embodiment, although figure Formula is that the electronic component being painted on power module 5 is disposed on towards the side inside fluorescent tube, but the utility model is not limited only to This.In another exemplary embodiment, electronic component also be can be only fitted to close to the side of lamp cap end wall.Herein under configuration, by In may be provided with opening on lamp cap, therefore the heat dissipation effect of electronic component can be improved.

In addition to this, since arranged perpendicular power module 5 can make the available accommodating space in lamp cap increase, electricity Source module 5 can further be split into the configuration of multiple circuit boards, as shown in Figure 1 C, wherein Fig. 1 C is that display is originally practical new The section plan of configuration of the lamp plate and power module of the LED straight lamp of the another embodiment of type inside fluorescent tube.The present embodiment It is that power supply 5 is constituted with two power module 5a and 5b with the main difference of earlier figures 1B embodiment, the two power supplys mould Block 5a and 5b is all perpendicular to axial cyd configuration in lamp cap, and power module 5a and 5b are directed towards lamp cap end wall and along axis To cyd sequential.More specifically, power module 5a and 5b are respectively provided with independent circuit board, and on circuit board respectively Corresponding electronic building brick is configured, is linked together wherein two circuit boards can pass through various means of electrical connection, so that whole electricity Source circuit topology is similar to Figure 1A or Figure 1B embodiment above-mentioned.By the configuration of Fig. 1 C, the accommodating space in lamp cap can be more It is effectively utilized, so that the circuit layout space of power module 5a and 5b are bigger.In an exemplary embodiment, it is possible to create compared with The electronic component (such as capacitor, inductance) of more thermal energy can be laid on the power module 5b of lamp cap end wall side by selection, And then increase the heat dissipation effect of electronic component through the opening on lamp cap.On the other hand, in order to power module 5a and 5b can be made to hang down Straight to be arranged in columned lamp cap, the circuit board of power module 5a and 5b can use octagonal structure, can with maximization Layout area.

It, can be through public affairs between separated power module 5a and 5b for the connection type between power module 5a and 5b It inserts and is connect with female plug, or connected by conducting wire routing, the outer layer of conducting wire can wrap up insulating sleeve as the protection that is electrically insulated. In addition, between power module 5a and 5b also can rivet nail joint, tin cream gluing, welding or by conducting wire binding in a manner of come directly It is connected together in succession.

It referring to figure 2., include one layer of line layer 2a with conductive effect, light as the bendable circuit soft board of lamp plate 2 Source 202 is set on line layer 2a, is connected to by line layer 2a with power sourced electric.Have the described of conductive effect in this description Line layer can be described as conductive layer again.Referring to Fig. 2, in the present embodiment, bendable circuit soft board can also include one dielectric layer 2b, It is overlapped with line layer 2a, the area equation of dielectric layer 2b and line layer 2a or be slightly less than dielectric layer, line layer 2a with dielectric Layer 2b opposite surface is for being arranged light source 202.Line layer 2a is electrically connected to power supply 5 (referring to Figure 1) to allow direct current Stream passes through.Dielectric layer 2b then passes through bonding agent piece 4 on the surface opposite with line layer 2a and is adhered on the inner peripheral surface of fluorescent tube 1.Its In, line layer 2a can be metal layer, or be furnished with the bus plane of conducting wire (such as copper wire).

In other embodiments, the outer surface of line layer 2a and dielectric layer 2b can respectively coat a circuit protecting layer, described Circuit protecting layer can be a kind of ink material, has the function of welding resistance and increases reflection.Alternatively, bendable circuit soft board can be with It is one layer of structure, i.e., is only made of a sandwich circuit layer 2a, then coats one layer of above-mentioned ink material on the surface of line layer 2a Circuit protecting layer can be equipped with opening on protective layer, and light source and line layer are electrically connected.Whether a sandwich circuit layer 2a Structure or two-layer structure (a sandwich circuit layer 2a and one dielectric layer 2b) can coupled circuit protective layers.Circuit protecting layer can also To be arranged in a side surface of bendable circuit soft board, such as circuit protecting layer only is set in the side with light source 202.It needs It is noted that bendable circuit soft board is a sandwich circuit layer structure 2a or is two-layer structure (a sandwich circuit layer 2a and one layer of dielectric Layer 2b), hence it is evident that than general three-layer flexible substrate (pressing from both sides one dielectric layer in two sandwich circuit layers) more flexible and flexibility, Therefore, and bendable circuit soft board can be tightly attached to fluorescent tube with the special formed collocation of fluorescent tube 1 (such as: non-straight lamp) On 1 tube wall.In addition, it is preferably configuration, and the number of plies of bendable circuit soft board that bendable circuit soft board, which is tightly attached to tube wall, Fewer, then heat dissipation effect is better, and material cost is lower, more environmentally friendly, and flexible effect also has an opportunity to be promoted.

Certainly, the bendable circuit soft board of the utility model is not limited in one layer or double layer circuit plate, in other implementations In example, bendable circuit soft board includes multilayer line layer 2a and multilayer dielectric layer 2b, and dielectric layer 2b and line layer 2a can be handed over sequentially Wrong overlapped and opposite with light source 202 set on line layer 2a side, light source 202 are set to most upper one layer of multilayer line layer 2a, lead to Most upper one layer for crossing line layer 2a is connected to power sourced electric.In other embodiments, as the bendable circuit soft board of lamp plate 2 Axis projection length is greater than the length of fluorescent tube.

Fig. 7 is referred to, in one embodiment, bendable circuit soft board as lamp plate 2 from top to bottom sequentially includes one the The thickness of one line layer 2a, a dielectric layer 2b and one second line layer 2c, the second line layer 2c are greater than the thickness of first line layer 2a Degree, the axis projection length of lamp plate 2 is greater than the length of fluorescent tube 1, wherein being not provided with light source 202 in lamp plate 2 and protruding from fluorescent tube 1 In terminal region, first line layer 2a and the second line layer 2c penetrate two through holes 203 and 204 electrical communications respectively, but pass through Perforation 203 and 204 is not connected to avoid short circuit each other.

Mode whereby can play support first line layer 2a's and dielectric layer 2b since the second line layer 2c thickness is larger Effect, while lamp plate 2 being allowed to be not likely to produce offset or deformation when being attached on the inner tubal wall of fluorescent tube 1, to promote manufacturing yield.This Outside, first line layer 2a and the second line layer 2c is electrically connected logical, and the circuit layout on first line layer 2a is extended To the second line layer 2c, make the circuit layout on lamp plate 2 more polynary.Furthermore the circuit location wiring of script becomes from single layer Bilayer, the line layer monolayer area on lamp plate 2, that is, the size in width direction, can further reduce, batch is allowed to be consolidated Brilliant lamp plate quantity can increase, and promote productivity.

Further, lamp plate 2 be equipped with light source 202 and protrude from the first line layer 2a in the terminal region of fluorescent tube 1 and Second line layer 2c can also be directly utilized the circuit layout to realize power module, and power module is allowed directly to configure can It scratches and is achieved on formula circuit soft board.

If lamp plate 2 is not fixed on the inner peripheral surface of fluorescent tube 1 along the axial both ends of fluorescent tube 1, if connected using conducting wire, It is subsequent move during, due to both ends freedom, be easy to happen shaking during subsequent move, thus make it possible to conducting wire It is broken.Therefore the connection type of lamp plate 2 and power supply 5 is preferentially selected as welding.It specifically, referring to Fig.1, can be directly by lamp Plate 2 is welded on the output end of power supply 5 after getting over the transition region 103 of strengthening section structure, removes the use of conducting wire from, improves product matter The stability of amount.

As shown in Figure 3A, the specific practice, which can be, reserves power pad a for the output end of power supply 5, and on power pad a It stays tin, so that the thickness of tin on pad increases, facilitates welding, correspondingly, also reserving light source pad on the end of lamp plate 2 B, and the power pad a of 5 output end of power supply and the light source pad b of lamp plate 2 are welded together.By the plane definition where pad For front, then lamp plate 2 is docked with the connection type of power supply 5 with the positive pad of the two the most firm, but is welded in welding It is pressed in the back side of lamp plate 2 for pressure head is typical, to heat scolding tin across lamp plate 2, is easier the problem of reliability occur.Such as Fruit in certain embodiments, will output hole among the positive light source pad b of lamp plate 2, then it is face-up superimposed upon power supply 5 It is welded on positive power pad a, then welds pressure head and directly scolding tin can be heated and melt, to being relatively easy on Practical Operation It realizes.

As shown in Figure 3A, in above-described embodiment, the bendable circuit soft board as lamp plate 2 is largely fixed on fluorescent tube 1 On inner peripheral surface, only at both ends it is not fixed on the inner peripheral surface of fluorescent tube 1 (referring to Fig. 7), is not fixed on 1 inner peripheral surface of fluorescent tube Lamp plate 2 formed a freedom portion 21 (referring to Figure 1 and 7), and lamp plate 2 be fixed on the part on the inner peripheral surface of fluorescent tube 1 formed one Fixed part 22.Freedom portion 21 has above-mentioned pad b, and one end welds together with power supply 5, and the extension of other end one connects It is connected to fixed part 22, and the part between 21 both ends of freedom portion is not bonded (that is, in freedom portion 21 with the inner peripheral surface of fluorescent tube 1 Section is in hanging state).In assembly, one end that freedom portion 21 and power supply 5 weld will drive freedom portion 21 to receiving inside fluorescent tube 1 Contracting.It is worth noting that, when there are the bendable circuit soft board as lamp plate 2 two sandwich circuit layer 2a and 2c to press from both sides one as shown in Figure 7 When the structure of dielectric layer 2b, aforementioned lamp plate 2, which is not provided with light source 202 and protrudes from the terminal region of fluorescent tube 1, can be used as freedom portion 21, And freedom portion 21 is allowed to realize the connection of two sandwich circuit layers and the circuit layout of power module.

In addition, can be each single pin (totally two pins) of both-end in the pin design of LED straight lamp, being also possible to The framework of each double pins (totally four pins) of both-end.So can be used double in situation of the both-end from LED straight lamp into electricity Each at least pin is held to receive external drive signal.The conducting wire being arranged between each pin of this both-end is typically referred to as Line Or Neutral conducting wire, and can be used for the input and transmission of signal.Fig. 3 B is according to an embodiment LED straight lamp in its both ends lamp The conducting wire schematic diagram being arranged between head along lamp plate (such as bendable circuit soft board).Referring to Fig. 3 B, the LED straight lamp of this exposure It in embodiment may include fluorescent tube, lamp cap (being not depicted in Fig. 3 B), lamp plate 2, short circuit board 253 and inductance 526.The lamp Respectively there is an at least pin at pipe both ends, for receiving external drive voltage.The lamp cap is arranged in the lamp tube ends, and as schemed The short circuit board 253 (at least partly electronic building brick) shown in 3B in fluorescent tube left end and right end can be respectively at the both ends In lamp cap.The lamp plate 2 is arranged in the fluorescent tube, and includes LED module, and the LED module includes LED unit 632. The short circuit board 253 is electrically connected with the lamp plate 2, this electrical connection (such as through pad) may include that first end point (L) is used for Connect an at least pin for the lamp tube ends, second (+or LED+) and third endpoint (- or LED-) be respectively used to connect The positive and negative anodes and the 4th endpoint (GND or ground) of the LED unit 632 are optionally and typical for meeting reference potential Ground, the reference potential be defined as ground current potential or the 4th endpoint system in order to this LED straight lamp power module Be grounded purpose and exists between the 4th endpoint for the short circuit board 253 that 526 system of the inductance is serially connected in the lamp tube ends In embodiment, inductance 526 may include such as I-shaped inductance (choke inductor or Dual-Inline-Package inductor)。

More specifically, because in straight lamp design of the both-end into electricity, may in the lamp cap of both ends each setting unit electricity Source circuit (for example, about 21W), so may require that the conducting wire L (being input signal cable) extended along lamp plate setting, and this conducting wire L and conducting wire LED+ very close to therefore generating parasitic capacitance between the two.The parasitism can be penetrated by the High-frequency Interference of conducting wire LED+ Capacitor and reflect conducting wire L, and then generate the EMI effect that can be detected.

Therefore, in the present embodiment, gone here and there through between the 4th endpoint of the short circuit board 253 in the lamp tube ends The configuration of inductance 526 is connect, the signal of High-frequency Interference can be blocked to return through characteristic of the inductance 526 in high frequency with high impedance Road, and then the High-frequency Interference on conducting wire LED+ is eliminated, to avoid parasitic capacitance reflection to the EMI effect on conducting wire L.Change speech It, the function of inductance 526 is eliminated or is reduced as aforementioned wire L (along lamp plate 2 between the first end point at both ends) is caused EMI or influenced by EMI, therefore improve in fluorescent tube power supply signal transmission (comprising by conducting wire L, conducting wire LED+ and Conducting wire LED-) and LED light quality.Therefore the EMI effect of conducting wire L is effectively reduced in such LED straight lamp with inductance 526 Furthermore answer, such LED straight lamp also may include installation detecting module (be described below and referring to Figure 15), wherein the peace Fill installation condition of the detecting module to detect the LED straight lamp and a lamp holder.

Referring to figure 5. and Fig. 6, in other embodiments, the above-mentioned lamp plate 2 and power supply 5 fixed through welding manner It can be replaced with the circuit board composition part 25 equipped with power module 250.Circuit board composition part 25 has long 251 He of circuit board One short circuit board 253, long circuit board 251 and short circuit board 253 are bonded each other to be fixed through gluing mode, short circuit board 253 In long 251 adjacent peripheral edges of circuit board.There is power module 25 on short circuit board 253, be integrally formed power supply.Short 253 material of circuit board The longer circuit board 251 of matter is hard, to have the function that Power Support module 250.

Long circuit board 251 can be above-mentioned bendable circuit soft board or flexible base board as lamp plate 2, and have Fig. 2 institute The line layer 2a shown.The mode of line layer 2a and power module 250 electrical connection of lamp plate 2 can have different according to actual use situation Electric connection mode.As shown in figure 5, the route that will be electrically connected with power module 250 on power module 250 and long circuit board 251 Layer 2a is all located at the same side of short circuit board 253, and power module 250 is directly electrically connected with long circuit board 251.Such as Fig. 6 institute Show, the line layer 2a system being electrically connected with power module 250 is located at short electricity on power module 250 and long circuit board 251 The two sides of road plate 253, power module 250 penetrate the line layer 2a electrical connection of too short circuit board 253 and lamp plate 2.

A to Fig. 4 D referring to figure 4., Fig. 4 A to Fig. 4 D are connected between lamp plate 200 and the power supply circuit board 420 of power supply 400 The schematic diagram of structure and connection type.In the present embodiment, lamp plate 200 and earlier figures 3A structure having the same, freedom portion are The part for being used to connect power supply circuit board 420 of the opposite end of lamp plate 200, fixed part are that lamp plate 200 is attached at fluorescent tube inner circumferential The part in face.Lamp plate 200 is flexible circuit board, and lamp plate 200 includes the circuit layer 200a and circuit protecting layer of stacking 200c.Wherein, circuit layer 200a is defined as the first face 2001, circuit protecting layer 200c far from circuit protecting layer 200c on one side It is defined as the second face 2002 on one side far from circuit layer 200a, that is to say, that the first face 2001 and second face 2002 are lamp plate Opposite two sides on 200.Multiple LED light sources 202 are set to the circuit on the first face 2001 and being electrically connected circuit layer 200a.Circuit Protective layer 200c be polyimide layer (Polyimide, PI), be not easy it is thermally conductive, but have the effect of protection circuit.Lamp plate 200 The first face 2001 there is pad b, for placing scolding tin g on pad b, and the welding ends of lamp plate 200 has notch f.Power supply electricity Road plate 420 includes power circuit floor 420a, and the definition of power supply circuit board 420 has opposite the first face 421 and the second face 422, the Two faces 422 are located at the side that power supply circuit board 420 has power circuit layer 420a.In the first face 421 of power supply circuit board 420 It is respectively formed with the pad a to correspond to each other with the second face 422, scolding tin g can be formed on pad a.It is steady as further welding Lamp plate 200 is placed in the lower section (reference of power supply circuit board 420 by fixed optimization and automation processing aspect optimization, the present embodiment The direction of Fig. 4 B), that is to say, that the first face 2001 of lamp plate 200 can be connected to the second face 422 of power supply circuit board 420.

As shown in Fig. 4 C and Fig. 4 D, when carrying out the welding of lamp plate 200 and power supply circuit board 420, first by the electricity of lamp plate 200 Being placed in supporting table 42 of road protective layer 200C (the second face 2002 contact supporting table 42 of lamp plate 200), allows power supply circuit board The pad b in the first face 2001 of the pad a and lamp plate 200 in 420 the second face 422 directly comes into full contact with, then to weld pressure head 41 It is pressed on the weld of lamp plate 200 Yu power supply circuit board 420.At this point, the heat of welding pressure head 41 can pass through power supply circuit board 420 The pad a in the first face 421 is passed directly to the pad b in the first face 2001 of lamp plate 200, and the heat for welding pressure head 41 will not It is influenced by the relatively poor circuit protecting layer 200c of thermal conductivity, further improves the pad of lamp plate 200 Yu power supply circuit board 420 The efficiency and stability of a and the joint pad b in welding.Meanwhile the pad b in the first face 2001 of lamp plate 200 and power supply are electric The pad a in the second face 422 of road plate 420 is the welding that is in contact, the pad a in the first face 521 of power supply circuit board 520 then with weldering Pressure head 41 is connect to be connected.As shown in Figure 4 C, power supply circuit board 420 and lamp plate 200 are welded as a whole completely by scolding tin g, It is power supply circuit board 420 between dummy line M and N in figure 4 c, the main connecting portion of lamp plate 200 and scolding tin g, from top to bottom Sequence be followed successively by the pad a in the first face 421 of power supply circuit board 420, power circuit layer 420a, power supply circuit board 420 second The pad a in face 422, the circuit layer 200a of lamp plate 200, lamp plate 200 circuit protecting layer 200C.The power supply electricity sequentially formed according to this 200 integrated structure of road plate 420 and lamp plate is more stable secured.

In different embodiments, another layer of circuit protecting layer (PI can be also equipped on the first face 2001 of circuit layer 200a again Layer), that is, circuit layer 200a can be sandwiched between two-tier circuit protective layer, so that the first face 2001 of circuit layer 200a can also quilt Circuit protecting layer protection, and only exposed portion circuit layer 200a (part equipped with pad b) is used to the weldering with power supply circuit board 420 Disk a connects.At this point, the circuit protecting layer on the first face 2001 of bottom a part meeting contact layer 200a of light source 202, and Another part then can contact layer 200a.

In addition to this, using the design scheme of Fig. 4 A to Fig. 4 D, the circular hole h on the pad a of power supply circuit board 420 is being placed After scolding tin, in automatic welding program, when weld pressure head 41 be pressed downwardly onto power supply circuit board 420 automatically when, scolding tin can because This pressure and be pushed into circular hole h, meet well automation processing needs.

Fig. 8 A is referred to, for according to the application of the power module of the LED straight lamp of the first preferred embodiment of the utility model Circuit box schematic diagram.508 system of AC power source is to provide ac supply signal.AC power source 508 can be alternating current, voltage model 100-277V is enclosed, frequency is 50 or 60Hz.Lamp tube drive circuit 505 receives the ac supply signal of AC power source 508, and turns Alternating current drive signal is changed into using as external drive signal.Lamp tube drive circuit 505 can be electric ballast, to by alternating current Signal conversion into high frequency, high pressure alternating current drive signal.The type of common electronics ballast, such as: instantaneous starting type (Instant Start) electric ballast, preheating start-up type (Program Start) electric ballast, quick-starting direct (Rapid Start) electric ballast etc., the LED straight lamp of the utility model are applicable in.The voltage of alternating current drive signal is greater than 300V, preferable voltage range are 400-700V；Frequency is greater than 10kHz, and preferable frequency range is 20k-50kHz.LED straight lamp 500 receive external drive signal, and in the present embodiment, external drive signal is that the exchange of lamp tube drive circuit 505 drives letter Number, and be driven to emit light.In the present embodiment, LED straight lamp 500 is the driving framework of single ended power supply, the same end lamp of fluorescent tube Head has the first pin 501, the second pin 502, to receive external drive signal.First pin 501, second of the present embodiment The coupling of pin 502 (that is, electrical connection, directly or indirectly connection) is to lamp tube drive circuit 505 to receive alternating current drive signal.

It is worth noting that, lamp tube drive circuit 505 is omissible circuit, therefore indicated in the drawings with dotted line.When When lamp tube drive circuit 505 omits, AC power source 508 and the first pin 501, the second pin 502 are coupled.At this point, the first pin 501, the second pin 502 receives ac supply signal provided by AC power source 508, using as external drive signal.

Other than the application of above-mentioned single ended power supply, the LED straight lamp 500 of the utility model can also be applied to both-end list The circuit structure of the double pins of the circuit structure and both-end of pin.Wherein, the circuit structure of both-end list pin refers to Fig. 8 B, figure 8B is the application circuit block schematic diagram according to the power module of the LED straight lamp of the second preferred embodiment of the utility model.Phase Compared with shown in Fig. 8 A, the fluorescent tube that first pin 501, the second pin 502 of the present embodiment are respectively placed in LED straight lamp 500 is opposite Both-end lamp cap to form each single pin of both-end, remaining circuit connection and function are then identical as circuit shown in Fig. 8 A.Both-end is double The circuit structure of pin refers to Fig. 8 C, and Fig. 8 C is the power supply according to the LED straight lamp of the utility model third preferred embodiment The application circuit block schematic diagram of module.Compared to shown in Fig. 8 A and 8B, the present embodiment further includes third pin 503 and connects with the 4th Foot 504.One end lamp cap of fluorescent tube has the first pin 501, the second pin 502, and other end lamp cap has third pin 503, the Four pins 504.First pin 501, the second pin 502, third pin 503 and the 4th pin 504 are coupled to lamp tube drive circuit 505 to receive alternating current drive signal jointly, to drive the LED component (not drawing) in LED straight lamp 500 to shine.

Under the circuit structure of the double pins of both-end, it is either single-ended into electric mode, both-end list pin into electric mode or It is the double pins of both-end into electric mode, the power supply of fluorescent tube can be realized through the configuration of adjustment power module.Wherein, double Hold single pin under electric mode (that is, the external drive signal that both ends lamp cap gives opposed polarity respectively), in an exemplary embodiment In, it is that sky connects/suspension joint, such as the second pin 502 and third pin 503 can be sky that both-end lamp cap can have a pin respectively / the state of suspension joint is connect, makes fluorescent tube through the first pin 501 and the 4th pin 504 reception external drive signal, uses and enable in fluorescent tube The power module in portion carries out subsequent rectification and filter action；In another exemplary embodiment, the pin of both-end lamp cap can divide Not short circuit together, such as the first pin 501 with 502 short circuit of the second pin on the lamp cap of the same side together, and third connects 504 short circuit of the 4th pin on foot 503 and the same side lamp cap together, so can be also with the first pin 501 and second Pin 502 receives the external drive signal of positive polarity or negative polarity, and utilizes third pin 503 and the reception of the 4th pin 504 The external drive signal of opposite polarity is used and the power module inside fluorescent tube is enabled to carry out subsequent rectification and filter action.Double Hold double pins under electric mode (that is, two pins of the same side lamp cap give the external drive signal of opposed polarity respectively), in In one exemplary embodiment, the first pin 501 and the second pin 502 can receive the external drive signal of opposite polarity, and third Pin 503 and the 4th pin 504 can receive the external drive signal of opposite polarity, use and the power module inside fluorescent tube is enabled to carry out Subsequent rectification and filter action.

Then, Fig. 8 D is referred to, to illustrate according to the circuit box of the LED light of the first preferred embodiment of the utility model Figure.The power module of LED lamp mainly includes the first rectification circuit 510 and filter circuit 520, also may include LED illumination mould The part component of block 530.First rectification circuit 510 couples the first pin 501, the second pin 502, to receive external drive letter Number, and external driving signal is rectified, then by the first rectification output end 511, the output rectification of the second rectification output end 512 Signal afterwards.External drive signal in this can be the alternating current drive signal or ac supply signal in Fig. 8 A and Fig. 8 B, even Or operation of the direct current signal without influencing LED light.Filter circuit 520 and first rectification circuit couple, to right Rectified signal is filtered；I.e. filter circuit 520 couples the first rectification output end 511, the second rectification output end 512 to receive Rectified signal, and rectified signal is filtered, output end after then being filtered by output end 521, second after the first filtering 522 output filtered signals.LED illumination module 530 and filter circuit 520 couple, and with signal after accepting filter and shine；I.e. Output end 522 is after output end 521, second filters after first filtering of the coupling of LED illumination module 530 with signal after accepting filter, so The LED component (not drawing) in LED illumination module 530 is driven to shine afterwards.The explanation of embodiment after this part please be detailed in.

Fig. 8 E is referred to, for according to the circuit box schematic diagram of the LED light of the second preferred embodiment of the utility model.LED The power module of lamp mainly includes the first rectification circuit 510, filter circuit 520, LED illumination module 530 and the second rectified current Road 540 can be applied to the single ended power supply framework of Fig. 8 A or the Double-End Source framework of Fig. 8 B and 8C.First rectification circuit, 510 coupling The first pin 501, the second pin 502 are connect, to receive and rectify the first pin 501, the second pin 502 is transmitted external drives Dynamic signal；Second rectification circuit 540 couple third pin 503, the 4th pin 504, to receive and rectify third pin 503, The external drive signal that 4th pin 504 is transmitted.That is, the power module of LED light may include the first rectification circuit 510 and second rectification circuit 540 jointly in the first rectification output end 511, the second rectification output end 512 export rectified signal. Filter circuit 520 couple the first rectification output end 511, the second rectification output end 512 to receive rectified signal, and to rectification after Signal is filtered, and output end 522 exports filtered signal after then being filtered by output end 521, second after the first filtering.LED After output end 521, second filters after first filtering of the coupling of lighting module 530 then output end 522 is driven with signal after accepting filter LED component (not drawing) in dynamic LED illumination module 530 shines.

Fig. 8 F is referred to, for according to the circuit box schematic diagram of the LED light of the utility model third preferred embodiment.LED The power module of lamp mainly includes rectification circuit 510 ', filter circuit 520 and LED illumination module 530, is equally applicable To the single ended power supply framework of Fig. 8 A or the Double-End Source framework of Fig. 8 B and 8C.The difference of the present embodiment and earlier figures 8E embodiment exists It can have three input terminals in rectification circuit 510 ' to be respectively coupled to the first pin 501, the second pin 502 and third pin 503, and can for being rectified from the signal that each pin 501~503 is connected to, wherein the 4th pin 504 can for suspension joint or with 503 short circuit of third pin, therefore the present embodiment can be omitted the configuration of the second rectification circuit 540.Remaining circuit running and Fig. 8 E It is roughly the same, therefore do not repeat to repeat in this.

It is worth noting that, in the present embodiment, the first rectification output end 511, the second rectification output end 512 and the first filter The quantity of output end 522 is two after output end 521, second filters after wave, and then according to the first rectification circuit when practical application 510, signal transmits between filter circuit 520 and each circuit of LED illumination module 530 increase in demand or reduction, i.e., between each circuit Coupling endpoint can be one or more.

Each embodiment of the power module of LED light shown in Fig. 8 D to Fig. 8 F and the power module of following LED light, except suitable Outside for LED straight lamp shown in Fig. 8 A to Fig. 8 C, for the illuminating circuit framework comprising two pins to transmit electric power, example Such as: the lamp holder of a variety of different headlamps such as bulb lamp, PAL lamp, intubation energy-saving lamp (PLS lamp, PLD lamp, PLT lamp, PLL lamp) Specification is applicable in.For bulb lamp embodiment the present embodiment can in CN105465630A or CN105465663 structure Implementation is arranged in pairs or groups use together, so that the better effect of protection against electric shock.

When the LED straight lamp 500 of the utility model is applied to the energized structural of at least single pin of both-end, could be adapted so It is installed on the lamp holder comprising lamp tube drive circuit or ballast 505 (such as electric ballast or Inductive ballast) afterwards, and is applicable in Change by AC power source 508 (such as alternating current) and power in bypass ballast 505.Fig. 8 G is referred to, preferably to implement according to one The circuit box schematic diagram that the LED straight lamp of example is connect with external power supply.Compared to shown in Fig. 8 A, exist in this embodiment More increase by a bypass ballast module 506 between AC power source 508 and ballast 505, the function of remaining circuit module then with Circuit module shown in Fig. 8 B is approximate or identical.The power supply that ballast module 506 receives AC power source 508 is bypassed, and such as Fig. 8 D institute Both-end the first pin 501 and the second pin 502 for showing connection LED straight lamp 500 (and can connect ballast 505 to ballast Device 505 is specifically controlled), function is to make to bypass ballast 505 from the received electric power of AC power source 508 and be output to First pin 501 and the second pin 502 bypass town to be powered in miscellaneous embodiment to LED straight lamp 500 Stream device module 506 may include the switching circuit for making electric power bypass ballast 505, and this switching circuit may include for example electric The components such as gas or electronic switch or device be familiar in fluorescent lamp skill field technical ability person can understand or structure bypass ballast Furthermore the feasible structure of device module 506 and circuit, it is glimmering that bypass ballast module 506 can be set to the tradition with ballast 505 In the lamp holder of light lamp, furthermore the in the power module 5 or 250 of LED straight lamp 500 also can be set, if ballast will be bypassed Module 506 is set as stopping this bypass function, then ballast 505 is still coupled to the first pin 501 and second connects as in fig. 8d Foot 502, therefore still permeable ballast 505 (receiving AC power source 508) is powered to LED straight lamp 500 and so reequips (bypass ballast module 506 is added) remains to be compatible with even if being mounted on LED straight lamp 500 in the lamp holder with ballast 505 In with the progress of AC power source 508 both end power supplying (rather than being powered by ballast 505).

Fig. 9 A is referred to, for according to the circuit diagram of the rectification circuit of the first preferred embodiment of the utility model.Rectification Circuit 610 is bridge rectifier, includes the first rectifier diode 611, the second rectifier diode 612, third rectifier diode 613 and the 4th rectifier diode 614, to carry out full-wave rectification to received signal.First rectifier diode 611 is just Pole couples the second rectification output end 512, and cathode couples the second pin 502.The anode coupling second of second rectifier diode 612 is whole Output end 512 is flowed, cathode couples the first pin 501.Anode the second pin 502 of coupling of third rectifier diode 613, cathode coupling Connect the first rectification output end 511.Anode the first pin 501 of coupling of rectifier diode 614, cathode couple the first rectification output end 511。

When the first pin 501,502 received signal of the second pin are AC signal, the operation description of rectification circuit 610 It is as follows.When AC signal is in positive half-wave, AC signal is sequentially through the first pin 501, rectifier diode 614 and the first rectification It flows into after output end 511, and is sequentially flowed after the second rectification output end 512, the first rectifier diode 611 and the second pin 502 Out.When AC signal is in negative half-wave, AC signal is sequentially whole through the second pin 502, third rectifier diode 613 and first It flows into after stream output end 511, and is sequentially flowed after the second rectification output end 512, the second rectifier diode 612 and pin 501 Out.Therefore, no matter AC signal is in positive half-wave or negative half-wave, the anode of the rectified signal of rectification circuit 610 is respectively positioned on One rectification output end 511, cathode are respectively positioned on the second rectification output end 512.Illustrate according to aforesaid operations, rectification circuit 610 exports Rectified signal be full wave rectified signal.

When the first pin 501, the second pin 502 couple DC power supply and receive direct current signal, the behaviour of rectification circuit 610 It is described as follows.When the first pin 501 couples the anode of DC power supply and the second pin 502 couples the negative terminal of DC power supply, Direct current signal sequentially flows into after the first pin 501, rectifier diode 614 and the first rectification output end 511, and sequentially through second It is flowed out after rectification output end 512, the first rectifier diode 611 and the second pin 502.When the first pin 501 couples DC power supply Negative terminal and the second pin 502 coupling DC power supply anode when, AC signal sequentially through the second pin 502, third rectification two It is flowed into after pole pipe 613 and the first rectification output end 511, and sequentially through the second rectification output end 512, the second rectifier diode 612 It is flowed out with after the first pin 501.Similarly, no matter how direct current signal penetrates the first pin 501, the input of the second pin 502, The anode of the rectified signal of rectification circuit 610 is respectively positioned on the first rectification output end 511, and cathode is respectively positioned on the second rectification output end 512。

Therefore, though the present embodiment 610 received signal of rectification circuit be AC signal or direct current signal, Correct output rectified signal.

Fig. 9 B is referred to, for according to the circuit diagram of the rectification circuit of the second preferred embodiment of the utility model.Rectification Circuit 710 includes the first rectifier diode 711 and the second rectifier diode 712, to whole to received signal progress half-wave Stream.Anode the second pin 502 of coupling of first rectifier diode 711, cathode couple the first rectification output end 511.Second rectification Anode the first rectification output end 511 of coupling of diode 712, cathode couple the first pin 501.Second rectification output end 512 view Practical application and can be omitted or be grounded.

Then illustrate that the operation of rectification circuit 710 is as follows.

When AC signal is in positive half-wave, AC signal is higher than in the signal level that the first pin 501 inputs second The signal level that pin 502 inputs.At this point, the first rectifier diode 711 and the second rectifier diode 712 be in it is inverse inclined Off state, rectification circuit 710 stop output rectified signal.When AC signal is in negative half-wave, AC signal is first The signal level that pin 501 inputs is lower than the signal level inputted in the second pin 502.At this point, the first rectifier diode 711 and Second rectifier diode 712 is in along inclined on state, and AC signal is rectified via the first rectifier diode 711, first Output end 511 and flow into, and flowed out by the second rectification output end 512 or another circuit or ground terminal of LED light.According to above-mentioned Operating instruction, the rectified signal that rectification circuit 710 exports are half wave rectified signal.

Wherein, the first pin 501 of rectification circuit shown in Fig. 9 A and Fig. 9 B and the second pin 502 are changed to third pin 503 and when four pins 504, it can be used as the second rectification circuit 540 shown in Fig. 8 E.More specifically, implementing in an example In example, all-wave/full bridge rectifier 610 shown in Fig. 9 A is applied in the fluorescent tube of the double-width grinding of Fig. 8 E, the first rectified current The configuration of road 510 and the second rectification circuit 540 can be as shown in Figure 9 C.Fig. 9 C is referred to, Fig. 9 C is according to the utility model third The circuit diagram of the rectification circuit of preferred embodiment.

The framework of rectification circuit 640 is identical as the framework of rectification circuit 610, is all bridge rectifier.Rectification circuit 610 Including first to fourth rectifier diode 611-614, configure as described in earlier figures 9A embodiment.Rectification circuit 640 includes the Five rectifier diodes 641, the 6th rectifier diode 642, the 7th rectifier diode 643 and the 8th rectifier diode 644, to right Received signal carries out full-wave rectification.Anode the second rectification output end 512 of coupling of 5th rectifier diode 641, cathode coupling Connect the 4th pin 504.Anode the second rectification output end 512 of coupling of 6th rectifier diode 642, cathode couple third pin 503.Anode the second pin 502 of coupling of third rectifier diode 613, cathode couple the first rectification output end 511.Rectify two poles The anode coupling third pin 503 of pipe 614, cathode couple the first rectification output end 511.

In the present embodiment, rectification circuit 640 and 610 is corresponding configuration, and the two difference is only that rectification circuit 610 The input terminal of (can compare the first rectification circuit 510 for Fig. 8 E herein) is coupled to the first pin 501 and the second pin 502, and The input terminal of rectification circuit 640 (can compare the second rectification circuit 540 for Fig. 8 E herein) is coupled to third pin 503 and the 4th Pin 504.In other words, the present embodiment is the circuit knot that the double pins of both-end are realized using the framework of two full-wave rectifying circuits Structure.

Further, in the rectification circuit of Fig. 9 C embodiment, although being realized with the configurations of the double pins of both-end, But it is either single-ended to be ok into electric or both-end list pin into electric mode other than the double pins of both-end are into the power supply mode of electricity LED straight lamp is powered through the circuit structure of the present embodiment.Specific running is described as follows:

It is single-ended into electricity in the case where, external drive signal can be applied on the first pin 501 and the second pin 502, or It is applied on third pin 503 and the 4th pin 504.The first pin 501 and the second pin are applied in external driving signal When on 502, rectification circuit 610 can carry out full-wave rectification to external driving signal according to function mode described in Fig. 9 A embodiment, And rectification circuit 640 will not then operate.On the contrary, being applied on third pin 503 and the 4th pin 504 in external driving signal When, rectification circuit 640 can carry out full-wave rectification to external driving signal according to function mode described in Fig. 9 A embodiment, and rectify Circuit 610 will not then operate.

In the case where both-end list pin is into electricity, external drive signal can be applied to the first pin 501 and the 4th pin 504, or it is applied to the second pin 502 and third pin 503.The first pin 501 and the 4th is applied in external driving signal Pin 504, and external drive signal be AC signal when, during AC signal is in positive half-wave, AC signal is sequentially passed through It is flowed into after first pin 501, the 4th rectifier diode 614 and the first rectification output end 511, and sequentially through the second rectification output end 512, it is flowed out after the 5th rectifier diode 641 and the 4th pin 504.During AC signal is in negative half-wave, AC signal It is sequentially flowed into after the 4th pin 504, the 7th rectifier diode 643 and the first rectification output end 511, and sequentially through the second rectification It is flowed out after output end 512, the second rectifier diode 612 and the first pin 501.Therefore, though AC signal be in positive half-wave or Negative half-wave, the anode of rectified signal are respectively positioned on the first rectification output end 511, and cathode is respectively positioned on the second rectification output end 512.According to Illustrate according to aforesaid operations, the second rectifier diode 612 and the 4th rectifier diode 614 collocation rectified current in rectification circuit 610 The 5th rectifier diode 641 and the 7th rectifier diode 643 in road 640 carry out full-wave rectification to AC signal, and export Rectified signal be full wave rectified signal.

On the other hand, the second pin 502 and third pin 503, and external drive signal are applied in external driving signal When for AC signal, during AC signal is in positive half-wave, AC signal is sequentially through the rectification of third pin the 503, the 8th two It is flowed into after pole pipe 644 and the first rectification output end 511, and sequentially through the second rectification output end 512, the first rectifier diode 611 It is flowed out with after the second pin 502.During AC signal is in negative half-wave, AC signal is sequentially through the second pin 502, third It is flowed into after rectifier diode 613 and the first rectification output end 511, and sequentially rectifies two poles through the second rectification output end the 512, the 6th It is flowed out after pipe 642 and third pin 503.Therefore, no matter AC signal is in positive half-wave or negative half-wave, the anode of rectified signal It is respectively positioned on the first rectification output end 511, cathode is respectively positioned on the second rectification output end 512.Illustrate according to aforesaid operations, rectification circuit The first rectifier diode 611 in 610 and the 6th rectifier diode in the collocation rectification circuit 640 of third rectifier diode 613 642 and the 8th rectifier diode 644 to AC signal carry out full-wave rectification, and export rectified signal be full-wave rectification believe Number.

In the case where the double pins of both-end are into electricity, the other running of rectification circuit 610 and 640 can refer to above-mentioned Fig. 9 A implementation The explanation of example, repeats no more in this.Wherein, rectified signal caused by rectification circuit 610 and 640 can be in the first rectification output Circuit of the output to rear end after end 511 is superimposed with the second rectification output end 512.

In an exemplary embodiment, the configuration of rectification circuit 510 ' can be as shown in fig. 9d.Fig. 9 D is referred to, according to Fig. 9 D The circuit diagram of the rectification circuit of the 4th preferred embodiment of the utility model.Rectification circuit 910 includes first to fourth rectification Diode 911-914 is configured as described in earlier figures 9A embodiment.In the present embodiment, it is whole to further include the 5th for rectification circuit 910 Flow diode 915 and the 6th rectifier diode 916.Anode the second rectification output end 512 of coupling of 5th rectifier diode 915, Cathode couples third pin 503.The anode coupling third pin 503 of 6th rectifier diode 916, the first rectification of cathode coupling are defeated Outlet 511.4th pin 504 is floating in this.

More specifically, the rectification circuit 510 ' of the present embodiment, which can be considered, the whole of three groups of bridge arms (bridge arm) unit Current circuit, every group of bridge arm unit can provide an input signal receiving end.For example, the first rectifier diode 911 and third Rectifier diode 913 forms the first bridge arm unit, corresponds to the signal received on the second pin 502；Second rectifier diode 912 The second bridge arm unit is formed with the 4th rectifier diode 914, corresponds to the signal received on the first pin 501；And the 5th is whole It flows diode 915 and the 6th rectifier diode 916 forms third bridge arm unit, correspond to the signal received on third pin 503. Wherein, as long as three groups of bridge arm unit two of them, which receive opposite polarity AC signal, can be carried out full-wave rectification.Base this, It is same compatible single-ended to be connect into electricity, both-end list pin into electricity and both-end are double under the configuration of the rectification circuit of Fig. 9 E embodiment Power supply mode of the foot into electricity.Specific running is described as follows:

It is single-ended into electricity in the case where, external drive signal is applied on the first pin 501 and the second pin 502, at this time The running of first to fourth rectifier diode 911-914 is as described in earlier figures 9A embodiment, and the 5th rectifier diode 915 and Six rectifier diodes 916 are inoperative.

In the case where both-end list pin is into electricity, external drive signal can be applied to the first pin 501 and third pin 503, or it is applied to the second pin 502 and third pin 503.The first pin 501 and third are applied in external driving signal Pin 503, and external drive signal be AC signal when, during AC signal is in positive half-wave, AC signal is sequentially passed through It is flowed into after first pin 501, the 4th rectifier diode 914 and the first rectification output end 511, and sequentially through the second rectification output end 512, it is flowed out after the 5th rectifier diode 915 and third pin 503.During AC signal is in negative half-wave, AC signal It is sequentially flowed into after third pin 503, the 6th rectifier diode 916 and the first rectification output end 511, and sequentially through the second rectification It is flowed out after output end 512, the second rectifier diode 912 and the first pin 501.Therefore, though AC signal be in positive half-wave or Negative half-wave, the anode of rectified signal are respectively positioned on the first rectification output end 511, and cathode is respectively positioned on the second rectification output end 512.According to Illustrate according to aforesaid operations, the second rectifier diode 912, the 4th rectifier diode the 914, the 5th rectification two in rectification circuit 910 Pole pipe 915 and the 6th rectifier diode 916 carry out full-wave rectification to AC signal, and the rectified signal exported is all-wave Rectified signal.

On the other hand, the second pin 502 and third pin 503, and external drive signal are applied in external driving signal When for AC signal, during AC signal is in positive half-wave, AC signal is sequentially through the rectification of third pin the 503, the 6th two It is flowed into after pole pipe 916 and the first rectification output end 511, and sequentially through the second rectification output end 512, the first rectifier diode 911 It is flowed out with after the second pin 502.During AC signal is in negative half-wave, AC signal is sequentially through the second pin 502, third It is flowed into after rectifier diode 913 and the first rectification output end 511, and sequentially rectifies two poles through the second rectification output end the 512, the 5th It is flowed out after pipe 915 and third pin 503.Therefore, no matter AC signal is in positive half-wave or negative half-wave, the anode of rectified signal It is respectively positioned on the first rectification output end 511, cathode is respectively positioned on the second rectification output end 512.Illustrate according to aforesaid operations, rectification circuit The first rectifier diode 911, third rectifier diode 913, the 5th rectifier diode 915 and the 6th rectifier diode in 910 916 pairs of AC signals carry out full-wave rectification, and the rectified signal exported is full wave rectified signal.

In the case where the double pins of both-end are into electricity, the running of first to fourth rectifier diode 911~914 can refer to above-mentioned The explanation of Fig. 9 A embodiment, repeats no more in this.In addition, if the signal polarity of third pin 503 is identical as the first pin 501, Then the running of the 5th rectifier diode 915 and the 6th rectifier diode 916 is similar to the second rectifier diode 912 and the 4th rectification Diode 914 (that is, first bridge arm unit).On the other hand, if the signal polarity of third pin 503 is identical as the second pin 502, Then the running of the 5th rectifier diode 915 and the 6th rectifier diode 916 is similar to the first rectifier diode 911 and rectifies with third Diode 913 (that is, second bridge arm unit).

Fig. 9 E is referred to, Fig. 9 E is the circuit diagram according to the rectification circuit of the 5th preferred embodiment of the utility model. Fig. 9 E is roughly the same with Fig. 9 D, and the two difference is that the input terminal of the first rectification circuit 610 of Fig. 9 E more couples endpoint conversion electricity Road 941.Wherein, the endpoint conversion circuit 941 of the present embodiment includes fuse 947 and 948.947 one end of fuse coupling first Pin 501, the other end are coupled to the conode of the second rectifier diode 912 and the 4th rectifier diode 914 (that is, the first bridge arm The input terminal of unit).948 one end of fuse couples the second pin 502, and the other end is coupled to the first rectifier diode 911 and the The conode (that is, input terminal of the second bridge arm unit) of three rectifier diodes 913.Whereby, when the first pin 501 and the second pin When 502 any electric currents flowed through are higher than the rated current of fuse 947 and 948, fuse 947 and 948 will accordingly fuse And open a way, reach the function of overcurrent protection whereby.In addition to this, the case where only one of them fuses fuse 947 and 948 Under (such as overcurrent situation only occur that of short duration time eliminates), if driving lamp into the power supply mode of electricity using the double pins of both-end Pipe, then the rectification circuit of the present embodiment can also be after the elimination of overcurrent situation, powering mode and lasting fortune based on both-end list pin Make.

Fig. 9 F is referred to, Fig. 9 F is the circuit diagram according to the rectification circuit of the 6th preferred embodiment of the utility model. Fig. 9 F is roughly the same with Fig. 9 D, and the two difference is that two pins 503 and 504 of Fig. 9 F are connected to one by thin wire 917 It rises.For earlier figures 9D or 9E embodiment, when using both-end list pin into electricity, no matter external drive signal is to apply In third pin 503 or the 4th pin 504, the rectification circuit of the present embodiment all can normal operation.In addition, working as third pin 503 When the lamp holder into electricity single-ended with the mistake access of the 4th pin 504, the thin wire 917 of the present embodiment can reliably fuse, therefore When fluorescent tube turns back to correct lamp holder, remain to maintain using the straight lamp of this rectification circuit normally to rectify work.

It can be seen from the above, the rectification circuit of Fig. 9 C to Fig. 9 F embodiment can be compatible with it is single-ended into electricity, both-end list pin into electricity And the double pins of both-end are into the situation of electricity, and then improve the application environment compatibility of integral LED straight lamp.In addition to this, consider From the point of view of being laid out situation to actual circuit, circuit configuration of the embodiment of Fig. 9 D to 9F inside fluorescent tube only needs three pads of setting It is connected to corresponding lamp cap pin, has significant contribution for the promotion of overall process yield.

0A referring to Figure 1, for according to the circuit box schematic diagram of the filter circuit of the first preferred embodiment of the utility model. The first rectification circuit 510 is drawn in figure only to indicate connection relationship, not filter circuit 520 includes the first rectification circuit 510. Filter circuit 520 includes filter unit 523, couples the first rectification output end 511 and the second rectification output end 512, whole to receive The rectified signal that current circuit is exported, and filtered signal is exported after filtering out the ripple in rectified signal.Therefore, after filtering The waveform of signal is smoother compared with the waveform of rectified signal.Filter circuit 520 can also further include filter unit 524, be coupled to whole Between current circuit and corresponding pin, such as: the first rectification circuit 510 and the first pin 501, the first rectification circuit 510 and second Pin 502, the second rectification circuit 540 and third pin 503 and the second rectification circuit 540 and the 4th pin 504, to specific Frequency is filtered, to filter out the specific frequency of external drive signal.In the present embodiment, filter unit 524 is coupled to first and connects Between foot 501 and the first rectification circuit 510.Filter circuit 520 can also further include filter unit 525, be coupled to the first pin 501 With the second pin 502 one of them between the diode of one of the first rectification circuit 510 or third pin 503 and the The diode of four pins 504 one of them and one of the second rectification circuit 540, to reduce or filter out electromagnetic interference (EMI).In the present embodiment, filter unit 525 is coupled to two poles of one of the first pin 501 and the first rectification circuit 510 It manages between (not drawing).Since filter unit 524 and 525 visual practical situations add or omit, therefore with dotted line table in figure Show it.

0B referring to Figure 1, for according to the circuit diagram of the filter unit of the first preferred embodiment of the utility model.Filtering Unit 623 includes a capacitor 625.One end of capacitor 625 couples the first rectification output end 511 and the first filtering output end 521, separately One end couples the second rectification output end 512 and the second filtering output end 522, to whole by the first rectification output end 511 and second The rectified signal of 512 output of stream output carries out low-pass filtering, forms filtering to filter out the radio-frequency component in rectified signal Then signal afterwards is exported by the first filtering output end 521 and the second filtering output end 522.

0C referring to Figure 1, for according to the circuit diagram of the filter unit of the second preferred embodiment of the utility model.Filtering Unit 723 is π type filter circuit, includes capacitor 725, inductance 726 and capacitor 727.One end coupling first of capacitor 725 is whole It flows output end 511 and couples the first filtering output end 521 by inductance 726 simultaneously, the other end couples the second rectification output end 512 And second filtering output end 522.Inductance 726 is coupled between the first rectification output end 511 and the first filtering output end 521.Electricity The one end for holding 727 simultaneously couples the first filtering output end 521, the other end by first rectification output end of the coupling of inductance 726 511 simultaneously Couple the second rectification output end 512 and the second filtering output end 522.

From the point of view of on equivalent, filter unit 723 is compared with filter unit more than 623 shown in Figure 10 B inductance 726 and capacitor 727.And And inductance 726 and capacitor 727 have low-pass filtering effect also with as capacitor 725.Therefore 723 phase of filter unit of the present embodiment Compared with filter unit 623 shown in Figure 10 B, there is more preferably high frequency to filter out ability, the waveform of the filtered signal exported is more It is smooth.

The inductance value of inductance 726 in above-described embodiment is preferably the range for being selected from 10nH~10mH.Capacitor 625,725,727 Capacitance be preferably and be selected from the range of 100pF~1uF.

1A referring to Figure 1, for according to the circuit diagram of the LED module of the first preferred embodiment of the utility model.LED mould The anode of block 630 couples the first filtering output end 521, and negative terminal couples the second filtering output end 522.LED module 630 includes extremely A few LED unit 632, i.e. light source in previous embodiment.LED unit 632 is connected in parallel to each other when being more than two.Each The anode of the anode coupling LED module 630 of LED unit, to couple the first filtering output end 521；The negative terminal of each LED unit The negative terminal of LED module 630 is coupled, to couple the second filtering output end 522.LED unit 632 includes at least one LED component 631.When LED component 631 is plural number, LED component 631 is connected into a string, belonging to the anode coupling of first LED component 631 The negative terminal of the anode of LED unit 632, first LED component 631 couples next (second) LED component 631.And last The anode of a LED component 631 couples the negative terminal of previous LED component 631, and the negative terminal of the last one LED component 631 couples institute Belong to the negative terminal of LED unit 632.

It is worth noting that, LED module 630 can produce current sense signal S531, represent LED module 630 flows through electricity Size is flowed, to be used as detecting, control LED module 630.

1B referring to Figure 1, for according to the circuit diagram of the LED module of the second preferred embodiment of the utility model.LED mould The anode of block 630 couples the first filtering output end 521, and negative terminal couples the second filtering output end 522.LED module 630 includes extremely Few two LED units 732, and the anode of the anode coupling LED module 630 of each LED unit 732 and negative terminal coupling The negative terminal of LED module 630.LED unit 732 includes at least two LED components 731, the LED in affiliated LED unit 732 The connection type of component 731 is as described by Figure 11 A, the anode of the cathode of LED component 731 and next LED component 731 Coupling, and the anode of first LED component 731 couples the anode and the last one LED component 731 of affiliated LED unit 732 Cathode couple belonging to LED unit 732 cathode.Furthermore it is also connected to each other between the LED unit 732 in the present embodiment.It is each The anode of n-th of LED component 731 of a LED unit 732 is connected to each other, and cathode is also connected to each other.Therefore, the LED of the present embodiment Connection between the LED component of module 630 is netted connection.Compared to the embodiment of Figure 12 A to Figure 12 F, above-described embodiment LED illumination module 530 includes LED module 630 but does not include driving circuit.

Similarly, the LED module 630 of the present embodiment can produce current sense signal S531, represent the stream of LED module 630 Through size of current, to be used as detecting, control LED module 630.

In addition, the quantity for the LED component 731 that LED unit 732 is included is preferably 15-25, more preferably in practical application It is 18-22.

1C referring to Figure 1, for according to the cabling schematic diagram of the LED module of the first preferred embodiment of the utility model.This reality The connection relationship of the LED component 831 of example is applied with shown in Figure 11 B, is illustrated by taking three LED units as an example herein.Positive wire 834 receive driving signal with cathode conductor 835, to provide electrical power to each LED component 831, for example: 834 coupling of positive wire The first filtering output end 521 of aforementioned filter circuit 520 is connect, cathode conductor 835 couples the second filtering of aforementioned filter circuit 520 Output end 522, with signal after accepting filter.For convenience of description, n-th in each LED unit is divided into figure same LED group 833.

Positive wire 834 connects first LED component 831 in the LED unit of the leftmost side three, i.e., the leftmost side as shown in the figure (left side) anode of three LED components in LED group 833, and cathode conductor 835 connects the last one in three LED units LED component 831, i.e., (right side) cathode of three LED components in rightmost side LED group 833 as shown in the figure.Each LED unit First LED component 831 cathode, the anode of the anode of the last one LED component 831 and other LED components 831 and negative Pole then penetrates the connection of connecting wire 839.

In other words, the anode of three LED components 831 of leftmost side LED group 833 is connected to each other through positive wire 834, Its cathode is connected to each other through leftmost side connecting wire 839.The anode of three LED components 831 of the second from left LED group 833 is through most Left side connecting wire 839 is connected to each other, and cathode is connected to each other through the connecting wire 839 of the second from left.Due to leftmost side LED group The anode of three LED components 831 of the cathode and the second from left LED group 833 of 833 three LED components 831 is connected through the leftmost side Conducting wire 839 is connected to each other, therefore the cathode of the first of each LED unit LED component and the anode of second LED component are each other Connection.The rest may be inferred to form netted connection as shown in Figure 11 B.

It is worth noting that, in connecting wire 839 with the width 836 of the positive coupling part of LED component 831 be less than with The width 837 of the negative polarity connecting portion of LED component 831.The area of negative polarity connecting portion is set to be greater than the face of positive coupling part Product.In addition, width 837 be less than the anode for connecting one of them in neighbouring two LED components 831 in connecting wire 839 simultaneously and The width 838 of the part of another cathode, make simultaneously with the area of positive electrode and negative electrode part be greater than only with negative polarity connecting portion Area and the area of positive coupling part.Therefore, such cabling framework facilitates the heat dissipation of LED component.

In addition, positive wire 834 also may include having positive wire 834a, cathode conductor 835 also may include having negative wire 835a makes the both ends of LED module all have anode and cathode tie point.Such cabling framework can make the power module of LED light Other circuits, such as: filter circuit 520, the first rectification circuit 510 and the second rectification circuit 540 are two by either end or simultaneously The anode and cathode tie point at end are couple to LED module, increase the elasticity that the configuration of actual circuit arranges.

1D referring to Figure 1, for according to the cabling schematic diagram of the LED module of the second preferred embodiment of the utility model.This reality The connection relationship of the LED component 931 of example is applied with shown in Figure 11 A, includes herein 7 with three LED units and each LED unit It is illustrated for LED component.Positive wire 934 and cathode conductor 935 receive driving signal, to provide electrical power to each LED group Part 931, for example: positive wire 934 couples the first filtering output end 521 of aforementioned filter circuit 520, cathode conductor 935 The second filtering output end 522 of aforementioned filter circuit 520 is coupled, with signal after accepting filter.It for convenience of description, will be each in figure Seven LED components are divided into same LED group 932 in a LED unit.

Positive wire 934 connects (left side) anode of first (leftmost side) LED component 931 in every LED group 932.It is negative Polar conductor 935 connects (right side) cathode of the last one (rightmost side) LED component 931 in every LED group 932.In every LED In group 932, the cathode of the LED component 931 of left connects right LED through connecting wire 939 in neighbouring two LED components 931 The anode of component 931.Whereby, the LED component of LED group 932 is connected into a string.

It is worth noting that, connecting wire 939 to connect one of two adjacent LEDs component 931 cathode and Another anode.The cathode of the LED component 931 of the last one (rightmost side) of the cathode conductor 935 to connect each LED group.Just The anode of the LED component 931 of first (leftmost side) of the polar conductor 934 to connect each LED group.Therefore, width and for LED The heat dissipation area of component according to said sequence from large to small.That is, the width 938 of connecting wire 939 is maximum, cathode conductor The width 937 of 935 connection 931 cathode of LED component takes second place, and positive wire 934 connects the width 936 of 931 anode of LED component It is minimum.Therefore, such cabling framework facilitates the heat dissipation of LED component.

In addition, positive wire 934 also may include having positive wire 934a, cathode conductor 935 also may include having negative wire 935a makes the both ends of LED module all have anode and cathode tie point.Such cabling framework can make the power module of LED light Other circuits, such as: filter circuit 520, the first rectification circuit 510 and the second rectification circuit 540 are two by either end or simultaneously The anode and cathode tie point at end are couple to LED module, increase the elasticity that the configuration of actual circuit arranges.

Furthermore cabling shown in Figure 11 C and 11D can be realized with flexible circuit board.For example, bendable circuit Plate has single layer line layer, formed with etching mode positive wire 834 in Figure 11 C, positive wire 834a, cathode conductor 835, Negative wire 835a and connecting wire 839 and positive wire 934 in Figure 11 D, positive wire 934a, cathode conductor 935, Negative wire 935a and connecting wire 939.

1E referring to Figure 1, Figure 11 E are the cabling schematic diagram according to the LED module of the utility model third preferred embodiment. The connection relationship of the LED component 1031 of the present embodiment is the same as shown in Figure 11 B.Wherein, the present embodiment is about positive wire and cathode The configuration of conducting wire (not being painted) and and other circuits connection relationship it is roughly the same with earlier figures 11D, difference between the two is The present embodiment by shown in Figure 11 C with landscape configuration LED component 831 (that is, each LED component 831 be by its positive electrode and negative electrode along Conducting wire extending direction is arranged) it is changed to longitudinal LED component 1031 that configures (that is, the positive electrode and negative electrode of each LED component 1031 Line direction is vertical with conducting wire extending direction), and the configuration direction based on LED component 1031 and correspond to adjustment connecting wire 1039 configuration.

More specifically, illustrating by taking connecting wire 1039_2 as an example, connecting wire 1039_2 includes that width 1037 is relatively narrow First long leg, wider second long leg of width 1038 and the turning point for connecting two long legs.Connecting wire 1039_2 can To be set as the shape of right angle Z-shaped, that is, the junction of each long leg and turning point is rectangular.Wherein, connecting wire The first long leg of 1039_2 can configuration corresponding with adjacent the second long leg of connecting wire 1039_3；Similarly, connection is led The second long leg of line 1039_2 can configuration corresponding with adjacent the first long leg of connecting wire 1039_1.By above-mentioned configuration It is found that connecting wire 1039 can extend the extending direction arrangement of edge, and the first long leg meeting of each connecting wire 1039 Configuration corresponding with adjacent the second long leg of connecting wire 1039；Similarly, the second long leg of each connecting wire 1039 It corresponding with adjacent the first long leg of connecting wire 1039 can configure, so that each connecting wire 1039, which is integrally formed, to be had The configuration of consistent width.The configuration of other connecting wires 1039 can refer to the explanation of above-mentioned connecting wire 1039_2.

For the relative configuration of LED component 1031 and connecting wire 1039, equally illustrated with connecting wire 1039_2, In the present embodiment, the anode of the LED component 1031 (such as four LED components 1031 in right side) of part is to be connected to connecting wire The first long leg of 1039_2, and be interconnected with one another by the first long leg；And the cathode of this part LED component 1031 is then It is to be connected to the second long leg of adjacent connecting wire 1039_3, and connect each other by the second long leg.Another party The anode in face, the LED component 1031 (such as four LED components 1031 in left side) of another part is to be connected to connecting wire 1039_ 1 the first long leg, and cathode is the second long leg for being connected to connecting wire 1039_2.

In other words, the anode of four LED components 1031 in left side is connected to each other through connecting wire 1039_1, and cathode is saturating Connecting wire 1039_2 is crossed to be connected to each other.The anode of four LED components 831 in right side is connected to each other through connecting wire 1039_2, Its cathode is connected to each other through connecting wire 1039_3.Since the cathode of four LED components 1031 in left side penetrates connecting wire The anode of 1039_2 and four, right side LED component 1031 connect, four, left side, 1031 analog of LED component for LED module wherein First LED component of four LED units, and four, right side LED component, 1031 analog LED is LED module wherein four Second LED component of LED unit, and so on to form netted connection as shown in Figure 11 B.

It is worth noting that, LED component 1031 is changed to longitudinal configuration by the present embodiment from the point of view of compared to Figure 11 C, can increase Add the gap between LED component 1031, and the cabling of connecting wire is widened, and then the route when fluorescent tube is rebuild is avoided to hold The risk being easily punctured, and when can avoid 1031 number of LED component more simultaneously and need close-packed arrays, copper foil covers between lamp bead Area is insufficient and tin sweat(ing) is made to cause short-circuit problem.

On the other hand, it is less than and negative polarity connecting portion through the width 1036 for the first long leg for making positive coupling part The configuration of the width 1037 of second long leg can enable LED component 1031 be greater than anode connection in the area of negative polarity connecting portion Partial area.Therefore, such cabling framework facilitates the heat dissipation of LED component.

1F referring to Figure 1, Figure 11 F are the cabling schematic diagram according to the LED module of the 4th preferred embodiment of the utility model. The present embodiment is roughly the same with earlier figures 11E embodiment, and the two difference is only that the connecting wire 1139 of the present embodiment is with non- The Z-type cabling at right angle is implemented.In other words, in the present embodiment, turning point forms oblique cabling, so that connecting wire 1139 Each long leg and turning point junction be on-right angle.Under the configuration of the present embodiment, LED component is configured in addition to longitudinal 1131 can realize the gap increased between LED component 1031, and except the effect that the cabling of connecting wire is widened, this reality The mode of the oblique configuration connecting wire of example is applied when can mount to avoid LED component since pad injustice causes LED component to shift, partially The problems such as shifting.

Specifically, using flexible circuit board, as under the application of lamp plate, (such as Figure 11 C's to 11E matches vertical cabling Set) the white oil depressed area of regularity can be generated in conducting wire turning point, so that Xi Chu phase on the LED component pad in connecting wire To in raised position.Due to upper Xi Chu and non-planar surface, thus in LED component attachment may because of surface irregularity and Be pasted to LED component can not on scheduled position.Therefore, the present embodiment, which is penetrated, is adjusted to oblique cabling for vertical cabling Configuration, can enable the copper foil even intensity of cabling entirety, without there is protrusion or uneven situation in specific position, in turn It enables LED component 1131 that can be easier to be attached on conducting wire, improves reliability when fluorescent tube is equipped with.In addition to this, due to this reality Applying each LED unit in example only can walk an oblique line substrate on lamp plate, therefore can make the intensity of whole lamp plate substantially It improves, so that lamp plate be prevented to be bent, lamp plate length can also be shortened.

In addition, can also cover copper foil in an exemplary embodiment through the pad peripheral in LED component 1131, use Offset when LED component 1131 mounts is offset, avoids generating the situation that tin sweat(ing) causes short circuit.

1G referring to Figure 1, Figure 11 G are the cabling schematic diagram according to the LED module of the 5th preferred embodiment of the utility model. The present embodiment is roughly the same with Figure 11 C, essentially consisted in place of difference between the two the connecting wire 1239 of the present embodiment with connect Corresponding position (at the pad of non-LED component 1231) cabling between conducting wire 1239 is changed to oblique cabling.Wherein, embodiment, which penetrates, incites somebody to action Vertical cabling is adjusted to the configuration of oblique cabling, the copper foil even intensity of online entirety can be enabled away, without in specific position There is protrusion or uneven situation, and then enable LED component 1131 that can be easier to be attached on conducting wire, when raising fluorescent tube is equipped Reliability.

In addition to this, under the configuration of the present embodiment, can also unify for color temperature point CTP to be arranged between LED component 1231, As shown in figure 11H, Figure 11 H is the cabling schematic diagram according to the LED module of the 6th preferred embodiment of the utility model.Through unified Color temperature point CTP is arranged in the configuration of LED component, so that after conducting wire is spliced to form LED module, corresponding position on each conducting wire Color temperature point CTP can be online in same.In this way, in upper tin, entire LED module can only with several adhesive tapes (such as Shown in figure, if 3 color temperature points are arranged in every conducting wire, 3 adhesive tapes are only needed) all color temperature points on LED module can be sheltered from, The smooth degree for improving assemble flow is used, and saves assembly time.

1I referring to Figure 1, Figure 11 I are the cabling schematic diagram according to the LED module of the 7th preferred embodiment of the utility model, Wherein, Figure 11 I is the configuration for being painted lamp plate end pad.In the present embodiment, the pad b1 on lamp plate and b2 are suitable for and power supply The power pad of circuit board welds together.Wherein, the pad configuration of the present embodiment be applicable to both-end list pin into electricity side Formula, that is, the pad of the same side can receive the external drive signal of identical polar.

Specifically, the pad b1 and b2 of the present embodiment can link together through the fuse FS of S type, wherein fuse FS can be for example to be constituted with thin wire, and impedance is at a fairly low, therefore can be considered as pad b1 together with b2 short circuit.Correct Application situation under, pad b1 and b2 can the corresponding external drive signals for receiving identical polar.And by the configuration, even if weldering Disk b1 and b2 misconnection to opposite polarity external drive signal, fuse FS can also react on by high current fuse, from And fluorescent tube is avoided to damage.In addition, will form that pad b2 sky connects and pad b1 is still connected to lamp plate after fuse FS fusing Configuration, therefore lamp plate remains to receive external drive signal through pad b1 and continue to use.

On the other hand, in an exemplary embodiment, the thickness of the cabling and pad ontology of pad b1 and b2 is at least up to 0.4mm, actual (real) thickness can select thickness greater than 0.4mm's according to the understanding of those skilled in the art in the case of implementable Any thickness.After verified, under the configuration that the cabling of pad b1 and b2 and the thickness of pad ontology are at least up to 0.4mm, When lamp plate, which is docked through pad b1 with b2 and power supply circuit board, to be placed into fluorescent tube, even if the copper foil at pad b1 and b2 is rolled over Disconnected, the copper foil of the more affixs in periphery can also get up the circuit connection of lamp plate and power supply circuit board, so that fluorescent tube can be normal Work.

1J referring to Figure 1, Figure 11 J are the power pad schematic diagram according to the utility model preferred embodiment.In this implementation In example, can have the configuration of for example, 3 pads a1, a2 and a3 on power supply circuit board, and the power supply circuit board can be such as For printed circuit board, but the utility model is not limited.A plurality of perforation hp are provided on each pad a1, a2 and a3.? In power supply circuit board and lamp plate welding process, welding substance (such as scolding tin) can fill up the perforation hp at least one so that Pad (such as b1, b2, the beneath title light source on pad a1, a2 and a3 (beneath title power pad) and lamp plate on power supply circuit board Pad) it is electrically connected with each other, wherein the lamp plate may be, for example, bendable circuit soft board.

Since perforation hp increases the contact area between scolding tin and power pad a1, a2 and a3, power pad Power of pasting between a1, a2 and a3 and light source pad further enhances.In addition to this, perforate hp setting can also improve it is scattered Heat area is elevated the thermal characteristics of fluorescent tube.In the present embodiment, the number of hp of perforating can be according to pad a1, a2 And a3 size and be selected as 7 or 9.If selection is implemented with the configuration of 7 hp that perforate, the arrangement for the hp that perforates be can be Wherein 6 perforation hp are arranged on a circumference, remain next then configuration on the center of circle.If selection is come with the configuration of 9 hp that perforate Implement, the array that the perforation hp can adopt 3x3 is arranged.Above-mentioned configuration selection can preferably increase contact area and Improve heat dissipation effect.

1K referring to Figure 1, for according to the cabling schematic diagram of the LED module of the 8th preferred embodiment of the utility model.This reality Apply example system and the cabling of the LED module of Figure 11 C be changed to the double-deck line layer by single layer line layer, mainly by positive wire 834a and Negative wire 835a is changed to second layer line layer.It is described as follows.

Please referring also to Fig. 7, flexible circuit board have the double-deck line layer include first line a layer 2a, dielectric layer 2b and Second line layer 2c.It is electrically isolated between first line layer 2a and the second line layer 2c with dielectric layer 2b.Flexible circuit board First line layer 2a positive wire 834, cathode conductor 835 and connecting wire 839 in Figure 11 K are formed with etching mode, with Be electrically connected the multiple LED component 831, such as: be electrically connected the multiple LED component and reticulate connection, the second line layer 2c with Etching mode positive wire 834a, negative wire 835a, to be electrically connected the filter circuit (filtering output end).And can Scratch the positive wire 834 of the first line layer 2a of formula circuit board, cathode conductor 835 has layer tie point 834b and 835b.Second Positive wire 834a, the negative wire 835a of line layer 2 have layer tie point 834c and 835c.Layer tie point 834b and 835b It is opposite with the layer position tie point 834c and 835c, it is for electrically connecting to positive wire 834 and positive wire 834a and cathode is led Line 835 and negative wire 835a.Preferably do the genealogy of law by the position of layer the tie point 834b and 835b of first layer line layer under Side forms opening to layer tie point a 834c and 835c is exposed by electric layer, is then welded with scolding tin, makes positive wire 834 and just Pole lead 834a and cathode conductor 835 and negative wire 835a are electrically connected to each other.

Similarly, positive wire 934a and negative wire 935a can also be changed to by the cabling of LED module shown in Figure 11 D Second layer line layer, and form the Wiring structure of the double-deck line layer.

It is worth noting that, the thickness of the second conductive layer of the flexible circuit board with bilayer conductive layer or line layer compared with It is good thick for the thickness compared to the first conductive layer, the line loss (pressure drop) on positive wire and negative wire can be reduced whereby. Furthermore the flexible circuit board with bilayer conductive layer is compared to the flexible circuit board of single conductive layer, due to by both ends Positive wire, negative wire move to the second layer, can reduce the width of flexible circuit board.It is relatively narrow on identical jig The discharge quantity of substrate is more than wider substrate, therefore the production efficiency of LED module can be improved.And there is bilayer conductive layer Flexible circuit board relatively on be relatively easy to maintain shape, with increase production reliability, such as: when the welding of LED component The accuracy of welding position.

As the deformation of above scheme, the utility model also provides a kind of LED straight lamp, the power supply mould of the LED straight lamp At least partly electronic building brick of block is arranged on lamp plate: utilizing PEC (printed electronic circuit, PEC:Printed Electronic Circuits), technology at least partly electronic building brick will be printed or be embedded on lamp plate.

In one embodiment of the utility model, the electronic building brick of power module is provided entirely on lamp plate.It makes Process is as follows: substrate preparation (flexible printed circuit preparation) → spray printing metal nano ink → spray printing passive block/active Device (power module) → drying/sintering → spray printing interlayer connection convex block → spray insulation ink → spray printing metal nano ink → Spray printing passive block and active device (and so on form included multi-layer board) → sprayed surface welded disc → spraying welding resistance LED component is welded in agent.

It, only need to be in lamp plate if the electronic building brick of power module is provided entirely on lamp plate in above-mentioned the present embodiment Both ends by welding lead connect LED straight lamp pin, realize pin and lamp plate electrical connection.Thus without being again Substrate is arranged in power module, and then can further optimize the design of lamp cap.Preferably, the two of lamp plate are arranged in power module End reduces influence of the heat of its work generation to LED component to the greatest extent in this way.The present embodiment is welded because reducing, and improves power module Whole reliability.

If part electronic building brick is printed on lamp plate (such as resistance, capacitor), and such as by big device: inductance, electrolysis The electronic building bricks such as capacitor are arranged in lamp cap.The manufacturing process of lamp plate is same as above.In this way by part electronic building brick being arranged in lamp On plate, it is reasonably laid out power module, the design of Lai Youhua lamp cap.

It is deformed as above-mentioned scheme, can also be realized by way of insertion and the electronic building brick setting of power module exists On lamp plate.That is: electronic building brick is embedded on flexible lamp plate in a manner of insertion.Preferably, can be used containing resistor-type/capacitive Copper coated foil plate (CCL) or the methods of the relevant ink of silk-screen printing realize；Or realize that insertion is passive using inkjet printing technology The method of component, i.e., using ink-jet printer directly as passive block electrically conductive ink and correlation function ink jet-printing to lamp plate On the position of interior setting.Then, by UV light processing or drying/sintering processes, the lamp plate of potting passive block is formed.It is embedded in Electronic building brick includes resistance, capacitor and inductance on lamp plate；In other embodiments, active block is also suitable.In this way Design come reasonably be laid out power module so that reach optimization lamp cap design (due to part use embedded resistance and capacitor, The present embodiment has saved valuable printed circuit board surface space, reduce the size of printed circuit board and reduce its weight and Thickness.Simultaneously because eliminating the pad of these resistance and capacitor, (pad is to be easiest to introduce failure on printed circuit board Part), the reliability of power module is also improved.The length of conducting wire and permission on printed circuit board will be shortened simultaneously More compact device layout, thus improve electric property).

Illustrate the manufacturing method of embedded capacitance, resistance below.

Usually using the method for embedded capacitance, using a kind of concept for being called distributed electrical perhaps plane capacitance.In copper Insulating layer very thin in pressure on the basis of layer.Generally occur in pairs in the form of bus plane/stratum.Very thin insulating layer makes The distance between bus plane and stratum are very small.Such capacitance can also be realized by traditional plated through-hole.Substantially For, such method establishes a big parallel plate capacitance on circuit boards.

The product of some high-capacitances, some are distributed capacitor types, and other is discrete Embedded.By Barium titanate (a kind of material with high dielectric constant) is filled in insulating layer to obtain higher capacitance.

The method for usually manufacturing embedded resistance is using resistance stick.It is the tree doped with conductibility carbon or graphite Rouge is screen printed onto specified place, is then laminated into inside circuit board after treatment as filler.Resistance is by metallizing Hole or micro- via hole are connected to other electronic building bricks on circuit board.Another method is Ohmega-Ply method: it is double-metal layer Structure --- layers of copper and a thin nickel alloy layer constitute resistor element, they form the resistance relative to bottom of stratiform Device.Then by the etching to layers of copper and nickel alloy layer, the various nickel resistance with copper tip are formed.These resistors are laminated Into the internal layer of circuit board.

In one embodiment of the utility model, conducting wire is directly printed on to the inner wall (being arranged to threadiness) of glass tube, LED component directly pastes the inner wall, to be electrically connected to each other by these conducting wires.Preferably, the chip form using LED component is straight It connects on the conducting wire for being attached to the inner wall and (tie point is set at the both ends of conducting wire, connect with power module by tie point LED component), After attaching, on the chip drop fluorescent powder (make LED straight lamp work when generate white light, can also be the light of other colors).

The luminous efficiency of the LED component of the utility model be 80lm/W or more, preferably 120lm/W or more, more preferably 160lm/W or more.LED component can be the light of monochromatic LED chip and blend together white light through fluorescent powder, the primary waves of spectrum A length of 430-460nm and 550-560nm or 430-460nm, 540-560nm and 620-640nm.

As described above, the electronic building brick of power module may be provided on the circuit board on lamp plate or in lamp cap.In order to increase The advantages of power module, some of them capacitor can use patch capacitor (such as ceramic paster capacitor) in embodiment, be set It sets on the circuit board on lamp plate or in lamp cap.But the patch capacitor being set as is in use since piezoelectric effect can issue Apparent noise influences comfort when client uses.In order to solve this problem, in the LED straight lamp of this exposure, can lead to It crosses immediately below patch capacitor and bores suitable hole or slot, this can change patch capacitor and press with the circuit board for carrying patch capacitor The vibrational system constituted under electrical effect is so that be substantially reduced issued noise.The shape at the edge or periphery of this hole or slot can For example round, ellipse or rectangle to be bordering on, and in the circuit board in the conductive layer or lamp cap being located in lamp plate, and in patch electricity The lower section of appearance.

2A referring to Figure 1, for according to the application circuit of the power module of the LED light of the utility model third preferred embodiment Block schematic diagram.Compared to shown in Fig. 8 C, the power module of the LED light of the present embodiment includes the first rectification circuit 510, filtered electrical Road 520, driving circuit 1530, wherein driving circuit 1530 and LED module 630 form LED illumination module 530.Driving circuit 1530 be DC-to-DC switching circuit, the first filtering output end 521 and the second filtering output end 522 is coupled, to accept filter Signal afterwards, and electrical power conversion is carried out filtered signal is converted into driving signal and in the first drive output 1521 and second Drive output 1522 exports.LED module 630 couples the first drive output 1521 and the second drive output 1522, to connect It receives driving signal and shines, the electric current of preferably LED module 630 is stable at a setting electric current value.LED module 630 can be found in figure The explanation of 11A to Figure 11 D.

More specifically, from the point of view of collocation Figure 11 A, under the configuration for having driving circuit 1530, the anode of LED module 630 It is to be changed to be coupled to the first drive output 1521, and the negative terminal of LED module 630 from being coupled to the first filtering output end 521 It is to be changed to be coupled to the second drive output 1522 from being coupled to the second filtering output end 522.

In an exemplary embodiment, the anode of LED module 630 is (that is, anode/the first LED component of LED unit 732 731 anode) the first drive output 1521 for being connected be driving circuit 1520 DC power output end, and LED mould The second driving that the negative terminal (that is, the cathode of LED unit 732/the last one LED component 731 cathode) of block 630 is connected is defeated Outlet 1522 is then ground terminal/reference end of driving circuit 1520.In other words, LED module 630 is coupled in driving circuit Between 1520 DC power output end and one ground terminal/reference end.

In another exemplary embodiment, 1522 one of them of first drive output 1521 and the second drive output For the DC power output end of driving circuit 1520；Wherein another one is then the power input of driving circuit 1520, that is, The first filtering output end 521 or the second filtering output end 522 can be connected directly to.In other words, LED module 630 is coupled to driving Between the DC power output end and input terminal of dynamic circuit 1520.

In addition it is attached to one and is mentioned that the connection type of the LED module 630 is not limited only to the state sample implementation of straight lamp, It is applicable in the LED lamp (that is, ballast-free LED lamp) of all types of AC power supplies power supplies, such as LED bulb, LED filament In lamp or integrated LED lamp, the utility model is not limited.

2B referring to Figure 1, for according to the circuit box schematic diagram of the driving circuit of the first preferred embodiment of the utility model. Driving circuit includes controller 1531 and conversion circuit 1532, electrical power conversion is carried out with the mode of current source, to drive LED module It shines.Conversion circuit 1532 includes switching circuit (alternatively referred to as power switch) 1535 and accumulator 1538.Conversion circuit 1532 the first filtering output ends 521 of coupling and the second filtering output end 522, signal after accepting filter, and according to controller 1531 Control, be converted into driving signal and exported by the first drive output 1521 and the second drive output 1522, to drive LED Module.Under the control of controller 1531, the driving signal that conversion circuit 1532 is exported is stabling current, and makes LED module Stabilized illumination.

The signal waveform of beneath collocation Figure 12 C to Figure 12 F further illustrates the running of driving circuit 1530.Wherein, scheme 12C to Figure 12 F is the signal waveform schematic diagram according to the driving circuit of the utility model difference embodiment.Figure 12 C and Figure 12 D It is to be painted the operation of driving circuit 1530 in the signal wave of continuous conduction mode (Continuous-Conduction Mode, CCM) Shape and control situation, and Figure 12 E and Figure 12 F are to be painted the operation of driving circuit 1530 in discontinuous conduction mode The signal waveform and control situation of (Discontinuous-Conduction Mode, DCM).In signal waveforms, horizontal axis T represents the time, and the longitudinal axis is then to represent voltage or current value (depending on signal type).

The controller 1531 of the present embodiment can current sense signal Sdet according to receiving adjust lighting of being exported Control signal Slc duty ratio (Duty Cycle) so that switching circuit 1535 react on light control signal Slc and be connected or Cut-off.Accumulator 1538 can according to the state of 1535 conduction and cut-off of switching circuit and repeatedly discharge/charge energy, and then enable LED module The 630 driving current ILED received can be stably maintained on a pre-set current value Ipred.Light control signal Slc Can have fixed signal period Tlc and signal amplitude, and during the pulse enable in each signal period Tlc (such as Ton1, Ton2, Ton3 or pulse width) length can then be adjusted according to demand for control.Wherein, accounting for for control signal Slc is lighted Sky is than the ratio during being pulse enable with signal period Tlc.For example, if Ton1 is the signal period during pulse enable The 40% of Tlc indicates that lighting duty ratio of the control signal at first signal period Tlc is 0.4.

In addition, the current sense signal Sdet can be for example the signal for representing the size of current for flowing through LED module 630, Or the signal for flowing through the size of current of switching circuit 1535 is represented, the utility model is not limited.

Please driving current ILED first is shown in less than pre-set current value Ipred's referring concurrently to Figure 12 B and Figure 12 C, Figure 12 C In the case of, signal waveform variation of the driving circuit 1530 at multiple signal period Tlc.Specifically, first signal week In phase Tlc, switching circuit 1535 can react on high voltage level lighting control signal Slc and during pulse enable Ton1 Interior conducting.At this point, conversion circuit 1532 according to from the first filtering output end 521 and the second filtering output end 522 in addition to that can receive To input power generate driving current ILED be supplied to except LED module 630, can also be via the switching circuit 1535 of conducting It charges to accumulator 1538, the electric current IL for passing through accumulator 1538 is gradually increasing.In other words, during pulse enable In Ton1, accumulator 1538 can react on the input received from the first filtering output end 521 and the second filtering output end 522 Power supply and energy storage.

Then, during pulse enable after Ton1, what switching circuit 1535 can react on low voltage level lights control Signal Slc cut-off processed.In a period of switching circuit 1535 ends, the first filtering output end 521 and the second filtering output end 522 On input power will not be provided to LED module 630, but discharged by accumulator 1538 to generate driving current ILED is supplied to LED module 630, and wherein accumulator 1538 can be such that electric current IL gradually decreases because of release electric energy.Therefore, i.e., Make when lighting control signal Slc and being located at low voltage level (that is, during forbidden energy), it is electric that driving circuit 1530 still can be based on energy storage Road 1538 release can and continued power to LED module 630.In other words, whether no matter switching circuit 1535 is connected, driving circuit 1530 can all constantly provide stable driving current ILED to LED module 630, and the driving current ILED is first The about I1 of current value in a signal period Tlc.

In first signal period Tlc, controller 1531 can determine driving current according to current sense signal Sdet The current value I1 of ILED is less than pre-set current value Ipred, therefore control letter will be lighted when entering second signal period Tlc It is adjusted to Ton2 during the pulse enable of number Slc, Ton1 adds unit during wherein Ton2 is pulse enable during pulse enable Period t1.

In second signal period Tlc, the running of switching circuit 1535 and accumulator 1538 and preceding signal period Tlc is similar.Main difference between the two is, since Ton2 is compared with Ton1 long during pulse enable during pulse enable, so storage Energy circuit 1538 has the longer charging time, and discharge time is also relatively short, so that driving circuit 1530 is at second The average value of provided driving current ILED can be improved to the electric current closer to pre-set current value Ipred in signal period Tlc Value I2.

Similarly, since the current value I2 of driving current ILED at this time is still less than pre-set current value Ipred, in third In a signal period Tlc, controller 1531 will further can be adjusted to during the pulse enable for lighting control signal Slc Ton3, Ton2 is plus t1 during unit during wherein Ton3 is pulse enable during pulse enable, during being equal to pulse enable Ton1 adds period t2 (being equivalent to t1 during two units).In third signal period Tlc, switching circuit 1535 and energy storage The running of circuit 1538 is similar with preceding two signal periods Tlc.Since Ton3 further extends during pulse enable, so that The current value of driving current ILED rises to I3, and generally reaches pre-set current value Ipred.Thereafter, due to driving current The current value I3 of ILED has reached pre-set current value Ipred, therefore controller 1531 can maintain identical duty ratio, so that driving Electric current ILED can persistently be maintained pre-set current value Ipred.

Please driving current ILED is shown in greater than pre-set current value Ipred's referring concurrently to Figure 12 B and Figure 12 D, Figure 12 D again In the case of, signal waveform variation of the driving circuit 1530 at multiple signal period Tlc.Specifically, first signal week In phase Tlc, switching circuit 1535 can react on high voltage level lighting control signal Slc and during pulse enable Ton1 Interior conducting.At this point, conversion circuit 1532 according to from the first filtering output end 521 and the second filtering output end 522 in addition to that can receive To input power generate driving current ILED be supplied to except LED module 630, can also be via the switching circuit 1535 of conducting It charges to accumulator 1538, the electric current IL for passing through accumulator 1538 is gradually increasing.In other words, during pulse enable In Ton1, accumulator 1538 can react on the input received from the first filtering output end 521 and the second filtering output end 522 Power supply and energy storage.

Then, during pulse enable after Ton1, what switching circuit 1535 can react on low voltage level lights control Signal Slc cut-off processed.In a period of switching circuit 1535 ends, the first filtering output end 521 and the second filtering output end 522 On input power will not be provided to LED module 630, but discharged by accumulator 1538 to generate driving current ILED is supplied to LED module 630, and wherein accumulator 1538 can be such that electric current IL gradually decreases because of release electric energy.Therefore, i.e., Make when lighting control signal Slc and being located at low voltage level (that is, during forbidden energy), it is electric that driving circuit 1530 still can be based on energy storage Road 1538 release can and continued power to LED module 630.In other words, whether no matter switching circuit 1535 is connected, driving circuit 1530 can all constantly provide stable driving current ILED to LED module 630, and the driving current ILED is first The about I4 of current value in a signal period Tlc.

In first signal period Tlc, controller 1531 can determine driving current according to current sense signal Sdet The current value I4 of ILED is greater than pre-set current value Ipred, therefore control letter will be lighted when entering second signal period Tlc It is adjusted to Ton2 during the pulse enable of number Slc, Ton1 subtracts unit during wherein Ton2 is pulse enable during pulse enable Period t1.

In second signal period Tlc, the running of switching circuit 1535 and accumulator 1538 and preceding signal period Tlc is similar.Main difference between the two is, since Ton2 is short compared with Ton1 during pulse enable during pulse enable, so storage Energy circuit 1538 has the shorter charging time, and discharge time is also relatively long, so that driving circuit 1530 is at second The average value of provided driving current ILED can be reduced to the electric current closer to pre-set current value Ipred in signal period Tlc Value I5.

Similarly, since the current value I5 of driving current ILED at this time is still greater than pre-set current value Ipred, in third In a signal period Tpwm, controller 1531 will further can be adjusted to during the pulse enable for lighting control signal Slc Ton3, Ton2 subtracts t1 during unit during wherein Ton3 is pulse enable during pulse enable, during being equal to pulse enable Ton1 subtracts period t2 (being equivalent to t1 during two units).In third signal period Tlc, switching circuit 1535 and energy storage The running of circuit 1538 is similar with preceding two signal periods Tlc.Since Ton3 further shortens during pulse enable, so that The current value of driving current ILED is down to I6, and generally reaches pre-set current value Ipred.Thereafter, due to driving current The current value I6 of ILED has reached pre-set current value Ipred, therefore controller 1531 can maintain identical duty ratio, so that driving Electric current ILED can persistently be maintained pre-set current value Ipred.

It can be seen from the above, the pulse width of control signal Slc is lighted in the adjustment of the meeting stepped of driving circuit 1530, so as to drive Streaming current ILED is adjusted when being below or above pre-set current value Ipred step by step to leveling off to pre-set current value Ipred, into And it realizes constant current and exports.

In addition, in the present embodiment, driving circuit 1530 is that is, the accumulator for operating in continuous conduction mode 1538 will not to be discharged to electric current IL be zero during switching circuit 1535 ends.By the drive operated in continuous conduction mode Dynamic circuit 1530 is the power supply of LED module 630, and the power supply for being supplied to LED module 630 can be made relatively stable, be not likely to produce ripples Wave.

Driving circuit 1530 will be illustrated next and operate the control situation under discontinuous conduction mode.Referring first to Figure 12 B With Figure 12 E, wherein signal waveform and driving circuit 1530 running of Figure 12 E is generally identical as Figure 12 C.Figure 12 E and Figure 12 C Main difference be the driving circuit 1530 of the present embodiment because operating under discontinuous conduction mode, therefore accumulator 1538 Electric current IL can be discharged to during lighting the pulse forbidden energy of control signal Slc equal to zero, and then at next signal period Tlc Beginning re-start charging again.In addition to this running narration all can refer to above-mentioned Figure 12 C embodiment, repeat no more in this.

Please referring next to Figure 12 B and Figure 12 F, wherein the signal waveform of Figure 12 F and driving circuit 1530 operate generally with Figure 12 D is identical.The main difference of Figure 12 F and Figure 12 D is the driving circuit 1530 of the present embodiment because operation is discontinuously being connected Under mode, therefore accumulator 1538 can be discharged to electric current IL during lighting the pulse forbidden energy of control signal Slc and be equal to zero, And the beginning then at next signal period Tlc re-starts charging again.In addition to this running narration all can refer to above-mentioned figure 12D embodiment, repeats no more in this.

It is the power supply of LED module 630 by the driving circuit 1530 operated in discontinuous conduction mode, driving circuit can be made 1530 loss of power is lower, thus transfer efficiency with higher.

In addition, the above-mentioned running explanation about power supply conversion is not limited only to apply the LED straight tube in driving exchange input In lamp, it is applicable in the LED lamp (that is, ballast-free LED lamp) of all types of AC power supplies power supplies, such as LED bulb, In LED filament lamp or integrated LED lamp, the utility model is not limited.

2G referring to Figure 1, for according to the circuit diagram of the driving circuit of the first preferred embodiment of the utility model.At this Embodiment, driving circuit 1630 are decompression DC to-DC switching circuit, include controller 1631 and conversion circuit, and convert electricity Road includes inductance 1632, freewheeling diode 1633, capacitor 1634 and switching switch 1635.First filter of the coupling of driving circuit 1630 Wave output terminal 521 and the second filtering output end 522, are converted into driving signal for received filtered signal, to drive coupling LED module between the first drive output 1521 and the second drive output 1522.

In the present embodiment, switching switch 1635 is metal-oxide half field effect transistor, has control terminal, first end and second End.Switching the anode of the first end coupling freewheeling diode 1633 of switch 1635, second end couples the second filtering output end 522, Control terminal coupling controller 1631 is made between first end and second end with receiving the control of controller 1631 on or off.The One drive output 1521 couples the first filtering output end 521, and the second drive output 1522 couples one end of inductance 1632, and The first end of the other end coupling switching switch 1635 of inductance 1632.Capacitor 1634 is coupled to the first drive output 1521 and Between two drive outputs 1522, to stablize the voltage between the first drive output 1521 and the second drive output 1522 Difference.The negative terminal of freewheeling diode 1633 couples the first drive output 1521.

The running of driving circuit 1630 will be illustrated next.

When controller 1631 determines the conducting and cut-off of switching switch 1635 according to current sense signal S535 and/or S531 Between, that is, the duty ratio (Duty Cycle) of switching switch 1635 is controlled to adjust the size of driving signal.Current sense letter Number S535 system represents the size of current for flowing through switching switch 1635.Current sense signal S531 system, which represents to flow through, is coupled to first The size of current of LED module between drive output 1521 and the second drive output 1522.According to current sense signal Any of S531 and S535, the information for the electric power size that the available conversion circuit of controller 1631 is converted.When switching switchs When 1635 conducting, the electric current of filtered signal is flowed by the first filtering output end 521, and defeated by capacitor 1634 and the first driving It is flowed out after outlet 1521 to LED module, inductance 1632, switching switch 1635 by the second filtering output end 522.At this point, capacitor 1634 and inductance 1632 carry out energy storage.When switching the cut-off of switch 1635, inductance 1632 and capacitor 1634 discharge stored energy Amount, electric current make LED module still continuous illumination to the first drive output 1521 through 1633 afterflow of freewheeling diode.

It is worth noting that, the inessential component of capacitor 1634 and can be omitted, therefore be represented by dotted lines in figure.It is answered some With environment, electricity can be omitted to achieve the effect that stable LED module electric current by the characteristic of the change of inductance meeting resistive Hold 1634.In addition it is attached to one to be mentioned that, since the present embodiment is can pass through using non-isolated power supply converting structure The size of current (that is, current sense signal S535) that detecting flows through switching switch 1635 is cut as 1631 feedback control of controller Change the basis of switch 1635.According to isolated power supply converting structure, then the detecting resistance for being serially connected with LED unit is needed (not draw Show) detect the size of current for flowing through LED module, then it feeds back to the controller of primary side through photo-coupler (not being painted) 1631 reference as control.

Again from the point of view of another angle, driving circuit 1630 passes through LED module electric current and remains unchanged, therefore for part For LED module (such as: the LED modules such as white, red, blue, green), the situation that colour temperature changes with size of current It can improve, that is, LED module can maintain colour temperature constant under different brightness.And the inductance 1632 for playing the part of accumulator exists Switch release stored energy when switch 1635 ends, on the one hand makes LED module keep continuous illumination, on the other hand also make Current Voltage in LED module will not rapid drawdown to minimum, and when switching switch 1635 and being connected again, Current Voltage is just It is not required to from minimum back and forth to maximum value, whereby, avoids LED module discontinuously luminous and improve the overall brightness and drop of LED module Low minimum turn-on cycle and raising driving frequency.

2H referring to Figure 1, for according to the circuit diagram of the driving circuit of the second preferred embodiment of the utility model.At this Embodiment, driving circuit 1730 are voltage boosting dc to-DC switching circuit, include controller 1731 and conversion circuit, and convert electricity Road includes inductance 1732, freewheeling diode 1733, capacitor 1734 and switching switch 1735.Driving circuit 1730 will be by the first filter The received filtered signals of wave output terminal 521 and the institute of the second filtering output end 522 are converted into driving signal, are coupled in the with driving LED module between one drive output 1521 and the second drive output 1522.

One end of inductance 1732 couples the first filtering output end 521, the anode of other end coupling filter stream diode 1733 and Switch the first end of switch 1735.Switch second end coupling the second filtering output end 522 and the second driving output of switch 1735 End 1522.The cathode of freewheeling diode 1733 couples the first drive output 1521.Capacitor 1734 is coupled to the first driving output Between end 1521 and the second drive output 1522.

The control terminal of the coupling switching switch 1735 of controller 1731, according to current sense signal S531 and/or current sense Signal S535 switches the conducting and cut-off of switch 1735 to control.When switching the conducting of switch 1735, electric current is defeated by the first filtering Outlet 521 flows into, and is flowed out after flowing through inductance 1732, switching switch 1735 by the second filtering output end 522.At this point, flowing through electricity Increase with time, inductance 1732 is in energy storage state to the electric current of sense 1732.Meanwhile capacitor 1734 is in de-energized state, to continue LED module is driven to shine.When switching the cut-off of switch 1735, inductance 1732 is in de-energized state, and the electric current of inductance 1732 is at any time Between reduce.The electric current of inductance 1732 flows to capacitor 1734 and LED module through 1733 afterflow of freewheeling diode.At this point, capacitor 1734 are in energy storage state.

It is worth noting that, capacitor 1734 is omissible component, it is represented by dotted lines.The case where capacitor 1734 omits, When switching the conducting of switch 1735, the electric current of inductance 1732 is not passed through LED module and LED module is made not shine；Switch switch 1735 When cut-off, the electric current of inductance 1732 flows through LED module through freewheeling diode 1733 and LED module is made to shine.By control LED The fluorescent lifetime of module and the size of current flowed through, the average brightness that can achieve LED module is stable in setting value, and is reached The effect of identical stabilized illumination.In addition it is attached to one to be mentioned that, since the present embodiment is using non-isolated power supply switch rack Structure, therefore can pass through detecting and flow through the size of current (that is, current sense signal S535) of switching switch 1735 as controller The basis of 1731 feedback controls switching switch 1735.It then can not be directly by detecing according to non-isolated power supply converting structure The size of current of switching switch 1735 is surveyed as the basis of 1731 feedback control of controller switching switch 1735.

Again from the point of view of another angle, driving circuit 1730 passes through LED module electric current and remains unchanged, therefore for part For LED module (such as: the LED modules such as white, red, blue, green), the situation that colour temperature changes with size of current It can improve, that is, LED module can maintain colour temperature constant under different brightness.And the inductance 1732 for playing the part of accumulator exists Switch release stored energy when switch 1735 ends, on the one hand make LED module continuous illumination, another aspect but also Current Voltage on LED module will not rapid drawdown to minimum, and when switching switch 1735 and being connected again, Current Voltage is just not required to From minimum back and forth to maximum value, whereby, avoids LED module from discontinuously shining and improve the overall brightness of LED module and reduce most Low turn-on cycle and raising driving frequency.

2I referring to Figure 1, for according to the circuit diagram of the driving circuit of the utility model third preferred embodiment.At this Embodiment, driving circuit 1830 are decompression DC to-DC switching circuit, include controller 1831 and conversion circuit, and convert electricity Road includes inductance 1832, freewheeling diode 1833, capacitor 1834 and switching switch 1835.First filter of the coupling of driving circuit 1830 Wave output terminal 521 and the second filtering output end 522, are converted into driving signal for received filtered signal, to drive coupling LED module between the first drive output 1521 and the second drive output 1522.

The first end for switching switch 1835 couples the first filtering output end 521, and second end couples freewheeling diode 1833 Cathode, and control terminal coupling controller 1831 is made between first end and second end with receiving the control signal of controller 1831 State is on or off.Anode the second filtering output end 522 of coupling of freewheeling diode 1833.One end of inductance 1832 with cut The second end coupling of switch 1835 is changed, the other end couples the first drive output 1521.The coupling of second drive output 1522 is continuous Flow the anode of diode 1833.Capacitor 1834 is coupled between the first drive output 1521 and the second drive output 1522, To stablize the voltage between the first drive output 1521 and the second drive output 1522.

Controller 1831 controls switching switch 1835 according to current sense signal S531 and/or current sense signal S535 Conducting and cut-off.When switch switch 1835 be connected when, electric current is flowed by the first filtering output end 521, through switched switch 1835, Inductance 1832 and after capacitor 1834 and the first drive output 1521, LED module and the second drive output 1522 by The outflow of two filtering output ends 522.At this point, flow through inductance 1832 electric current and capacitor 1834 voltage increase with time, inductance 1832 and capacitor 1834 be in energy storage state.When switching the cut-off of switch 1835, inductance 1832 is in de-energized state, inductance 1832 Electric current reduce at any time.At this point, the electric current of inductance 1832 is defeated through the first drive output 1521, LED module and the second driving Outlet 1522, freewheeling diode 1833 return inductance 1832 and form afterflow.

It is worth noting that, capacitor 1834 is that can omit component, it is represented by dotted lines in schema.When capacitor 1834 omits, No matter switching switch 1835 is on or off, the electric current of inductance 1832 can flow through the first drive output 1521 and second Drive output 1522 is to drive LED module continuous illumination.In addition it is attached to one to be mentioned that, since the present embodiment is using non-isolated The power supply converting structure of formula, therefore can pass through detecting and flow through the size of current of switching switch 1835 (that is, current sense signal S535) as the basis of 1831 feedback control of controller switching switch 1835.According to non-isolated power supply converting structure Then directly it can not switch switch 1835 by the size of current of detecting switching switch 1835 as 1831 feedback control of controller Basis.

Again from the point of view of another angle, driving circuit 1830 passes through LED module electric current and remains unchanged, therefore for part For LED module (such as: the LED modules such as white, red, blue, green), the situation that colour temperature changes with size of current It can improve, that is, LED module can maintain colour temperature constant under different brightness.And the inductance 1832 for playing the part of accumulator exists Switch release stored energy when switch 1835 ends, on the one hand makes LED module keep continuous illumination, on the other hand also make Current Voltage in LED module will not rapid drawdown to minimum, and when switching switch 1835 and being connected again, Current Voltage is just It is not required to from minimum back and forth to maximum value, whereby, avoids LED module discontinuously luminous and improve the overall brightness and drop of LED module Low minimum turn-on cycle and raising driving frequency.

2J referring to Figure 1, for according to the circuit diagram of the driving circuit of the 4th preferred embodiment of the utility model.At this Embodiment, driving circuit 1930 are decompression DC to-DC switching circuit, include controller 1931 and conversion circuit, and convert electricity Road includes inductance 1932, freewheeling diode 1933, capacitor 1934 and switching switch 1935.First filter of the coupling of driving circuit 1930 Wave output terminal 521 and the second filtering output end 522, are converted into driving signal for received filtered signal, to drive coupling LED module between the first drive output 1521 and the second drive output 1522.

One end of inductance 1932 couples the first filtering output end 521 and the second drive output 1522, and other end coupling is cut Change the first end of switch 1935.The second end for switching switch 1935 couples the second filtering output end 522, and control terminal coupling controls Device 1931 is on or off with the control signal according to controller 1931.The anode coupling inductance of freewheeling diode 1933 1932 with switching switch 1935 tie point, cathode coupling the first drive output 1521.First driving of the coupling of capacitor 1934 is defeated Outlet 1521 and the second drive output 1522 are coupled to the first drive output 1521 and the second drive output with stabilization The driving of LED module between 1522.

Controller 1931 controls switching switch 1935 according to current sense signal S531 and/or current sense signal S535 Conducting and cut-off.When switch switch 1935 conducting when, electric current is flowed by the first filtering output end 521, and flow through inductance 1932, It is flowed out after switching switch 1935 by the second filtering output end 522.At this point, flow through the electric current of inductance 1932 increase with time, inductance 1932 are in energy storage state；The voltage of capacitor 1934 is reduced at any time, and capacitor 1934 is in de-energized state, to maintain LED module It shines.When switching the cut-off of switch 1935, inductance 1932 is in de-energized state, and the electric current of inductance 1932 is reduced at any time.At this point, The electric current of inductance 1932 is through freewheeling diode 1933, the first drive output 1521, LED module and the second drive output 1522 It returns inductance 1932 and forms afterflow.At this point, capacitor 1934 is in energy storage state, the voltage of capacitor 1934 is increase with time.

It is worth noting that, capacitor 1934 is that can omit component, it is represented by dotted lines in schema.When capacitor 1934 omits, When switching the conducting of switch 1935, the electric current of inductance 1932 is not flow through the first drive output 1521 and the second drive output 1522 and so that LED module is not shone.When switching the cut-off of switch 1935, the electric current of inductance 1932 is flowed through freewheeling diode 1933 LED module is set to shine through LED module.By the size of current for controlling the fluorescent lifetime of LED module and flowing through, can achieve The average brightness of LED module is stable in setting value, and has the function that identical stabilized illumination.In addition one is attached to be mentioned that, Since the present embodiment is to can pass through the electric current that detecting flows through switching switch 1935 using non-isolated power supply converting structure Size (that is, current sense signal S535) switches the basis of switch 1935 as 1931 feedback control of controller.According to non- Isolated power supply converting structure then can not be directly by the size of current of detecting switching switch 1935 as controller 1931 The basis of feedback control switching switch 1735.

Again from the point of view of another angle, driving circuit 1930 passes through LED module electric current and remains unchanged, therefore for part For LED module (such as: the LED modules such as white, red, blue, green), the situation that colour temperature changes with size of current It can improve, that is, LED module can maintain colour temperature constant under different brightness.And the inductance 1932 for playing the part of accumulator exists Switch release stored energy when switch 1935 ends, on the one hand make LED module continuous illumination, another aspect but also Current Voltage on LED module will not rapid drawdown to minimum, and when switching switch 1935 and being connected again, Current Voltage is just not required to From minimum back and forth to maximum value, whereby, avoids LED module from discontinuously shining and improve the overall brightness of LED module and reduce most Low turn-on cycle and raising driving frequency.

Cooperate Fig. 5 and Fig. 6, short circuit board 253 be distinguished into the first short circuit board being connect with long 251 both ends of circuit board and Second short circuit board, and the first short circuit board of short circuit board 253 that the electronic building brick in power module is respectively set at And second on short circuit board.The length dimension of first short circuit board and the second short circuit board can be with rough consistent, can also be different It causes.Generally, the first short circuit board (left side circuit of the short circuit board 253 of the right-hand circuit board and Fig. 6 of the short circuit board 253 of Fig. 5 Plate) length dimension be the second short circuit board length dimension 30%~80%.The length ruler of more preferably first short circuit board Very little is the 1/3~2/3 of the length dimension of the second short circuit board.In this embodiment, the length dimension of the first short circuit board is substantially The half of the size of second short circuit board.The size of second short circuit board between 15mm~65mm (specific view application and It is fixed).In the lamp cap of one end that the first short circuit board is set to LED straight lamp and the second short circuit board to be set to LED straight In the lamp cap of the opposite other end of spot.

For example, the capacitor (such as: the capacitor 1634,1734,1834,1934 in Figure 12 C to Figure 12 F) of driving circuit It can be two or more capacitors in practical application to be formed in parallel.The capacitor of driving circuit is at least partly or entirely in power module Portion is set on the first short circuit board of short circuit board 253.That is, the inductance of rectification circuit, filter circuit, driving circuit, control Device, switching switch, diode etc. are all set on the second short circuit board of short circuit board 253.And inductance, controller, switching are opened Pass etc. is the higher component of temperature in electronic building brick, is set on different circuit boards from part or all of capacitor, can make capacitor (especially electrolytic capacitor) avoids impacting the service life of capacitor because of the higher component of temperature, improves capacitor reliability.Into one Step, can also be spatially separated because of capacitor and rectification circuit and filter circuit, solve the problems, such as EMI.

The transfer efficiency of the driving circuit of the utility model be 80% or more, preferably 90% or more, more preferably 92% with On.Therefore, when not including driving circuit, the luminous efficiency of the LED light of the utility model is preferably 120lm/W or more, more preferably For 160lm/W or more；And the luminous efficiency after comprising driving circuit in conjunction with LED component is preferably 120lm/W*90%= 108lm/W or more, more preferably 160lm/W*92%=147.2lm/W or more.

Additionally, it is contemplated that the light transmittance of the diffusion layer of LED straight lamp is 85% or more, therefore, the LED straight tube of the utility model The luminous efficiency of lamp is preferably 108lm/W*85%=91.8lm/W or more, more preferably 147.2lm/W*85%=125.12lm/ W。

3A referring to Figure 1, for according to the application of the power module of the LED straight lamp of the 4th preferred embodiment of the utility model Circuit box schematic diagram.Compared to Fig. 8 C illustrated embodiment, the LED straight lamp of the present embodiment includes the first rectification circuit 510, filter Wave circuit 520 and LED illumination module 530, and more increase overvoltage crowbar 1570.First filter of the coupling of overvoltage crowbar 1570 Wave output terminal 521 and the second filtering output end 522 to detect filtered signal, and are higher than setting in the level of filtered signal When overpressure value, the level of strangulation filtered signal.Therefore, overvoltage crowbar 1570 can protect LED illumination module 530 Component is not damaged because crossing high pressure.

3B referring to Figure 1, for according to the circuit diagram of the overvoltage crowbar of the utility model preferred embodiment.Over-voltage Protecting circuit 1670 includes zener diode 1671, such as: Zener diode (Zener Diode), coupling the first filtering output End 521 and the second filtering output end 522.Zener diode 1671 is in the first filtering output end 521 and the second filtering output end Conducting when 522 voltage difference (that is, level of filtered signal) reaches breakdown voltage, makes voltage difference strangulation on breakdown voltage. Breakdown voltage is preferably in the range of 40-100V, more preferably the range of 55-75V.

4A referring to Figure 1, Figure 14 A are that a kind of structure for LED straight lamp that one preferred embodiment of the utility model provides is shown It is intended to.The LED straight lamp provided in the present embodiment includes: fluorescent tube 1 and two lamp caps 3, and two lamp caps 3 are set to 1 both ends of fluorescent tube, and Two lamp caps 3 on one of them at least provided with the first pin 501, at least provided with the second pin 502 on two lamp caps are wherein another, LED straight lamp receives external drive signal, LED straight lamp provided in this embodiment by the first pin 501 and the second pin 502 It further include the power module 50 that the utility model any embodiment provides.

4B referring to Figure 1, Figure 14 B are a kind of structure for LED straight lamp that the utility model another preferred embodiment provides Schematic diagram.The LED straight lamp provided in the present embodiment includes: that 3 liang of lamp caps 3 of fluorescent tube 1 and two lamp caps are set to 1 both ends of fluorescent tube, and And two lamp cap 3 one of them equipped with the first pin 501 and third pin 503, at least provided with the on two lamp caps are wherein another Two pins 502 and the 4th pin 504, LED straight lamp receive external drive signal by the first pin 501 and the second pin 502, LED straight lamp provided in this embodiment further includes the power module 50 that the utility model any embodiment provides.

It should be noted that it will be appreciated by persons skilled in the art that the first pin 501 and in other embodiments Two pins 502 may also set up on the same lamp cap of LED straight lamp.4C referring to Figure 1, Figure 14 C be the utility model it is another compared with A kind of circuit diagram for LED straight lamp that good embodiment provides.The LED straight lamp provided in the present embodiment include: fluorescent tube 1 and Two 3 liang of lamp cap lamp caps 3 are set to 1 both ends of fluorescent tube, and one of two lamp caps 3 are equipped with the first pin 501 and the second pin 502, LED straight lamps receive external drive signal, LED provided in this embodiment by the first pin 501 and the second pin 502 Straight lamp further includes the power module 50 that the utility model any embodiment provides.

In above scheme, optionally, third pin 503 and the 4th can be also equipped on two lamp caps 3 are wherein another and is connect Foot 504.

In above scheme, optionally, LED straight lamp further include: auxiliary power module, auxiliary power module receive external Driving signal, and by least one connection power module of the first pin 501 and the second pin 502, wherein auxiliary electricity Source module carries out electric discharge in external driving signal abnormal electrical power supply and thinks that power module is powered.

It is a kind of including auxiliary power module that 4D referring to Figure 1, Figure 14 D are that the utility model one preferred embodiment provides The structural schematic diagram of LED straight lamp.LED straight lamp provided in this embodiment is on the basis of LED straight lamp shown in figure 14 A Increase auxiliary power module 2410, wherein auxiliary power module 2410 receives external drive signal, and passes through the first pin 501 Power module 50 is connected with the second pin 502, wherein auxiliary power module 2410 is carried out in external driving signal abnormal electrical power supply Electric discharge thinks that power module 50 is powered.

4E referring to Figure 1, Figure 14 E are that one kind that the utility model another preferred embodiment provides includes auxiliary power module LED straight lamp structural schematic diagram.The basis of LED straight lamp LED straight lamp shown in Figure 14 B provided in this embodiment Upper increase auxiliary power module 2410, wherein auxiliary power module 2410 receives external drive signal, and passes through the second pin 502 connection power modules 50, auxiliary power module 2410 carry out electric discharge in external driving signal abnormal electrical power supply and think power supply mould Block 50 is powered.

4F referring to Figure 1, for according to the application of the power module of the LED straight lamp of the 5th preferred embodiment of the utility model Circuit box schematic diagram.Compared to Fig. 8 C illustrated embodiment, the LED straight lamp of the present embodiment include the first rectification circuit 510 and Filter circuit 520, and more increase auxiliary power module 2510, wherein the power module of LED straight lamp also may include LED illumination The part component of module 530.Auxiliary power module 2510 is coupled to the first filtering output end 521 and the second filtering output end 522 Between.Auxiliary power module 2510 detects the filtered signal on the first filtering output end 521 and the second filtering output end 522, And decide whether to provide auxiliary power to the first filtering output end 521 and the second filtering output end 522 according to detecting result.Work as filter When signal stops providing or exchanging level deficiency after wave, i.e., when the driving voltage of LED module is lower than a boost voltage, auxiliary electricity Source module 2510 provides auxiliary power, makes LED illumination module 530 can be with continuous illumination.Boost voltage is according to auxiliary power module An accessory power supply voltage and determine.

4G referring to Figure 1, for according to the application of the power module of the LED straight lamp of the 6th preferred embodiment of the utility model Circuit box schematic diagram.Compared to Figure 14 F illustrated embodiment, the LED straight lamp of the present embodiment include the first rectification circuit 510, Filter circuit 520 and auxiliary power module 2510, and LED illumination module 530 further includes driving circuit 1530 and LED module 630. Auxiliary power module 2510 couples between the first drive output 1521 and the second drive output 1522.Auxiliary power module The driving signal of 2510 the first drive outputs 1521 of detecting and the second drive output 1522, and be according to detecting result decision No offer auxiliary power is to the first drive output 1521 and the second drive output 1522.When driving signal stops providing or hands over When flowing level deficiency, auxiliary power module 2510 provides auxiliary power, makes LED module 630 can be with continuous illumination.

In another exemplary embodiment, LED illumination module 530 or LED module 630 can only receive auxiliary power module Accessory power supply provided by 2510 is as working power, and external drive signal is then used as auxiliary power module 2510 Charging is used.Since the present embodiment is to light LED illumination mould only with auxiliary power provided by auxiliary power module 2810 Block 530, no matter that is, external drive signal provided by alternating current or provided by ballast, be all first to auxiliary power module 2810 energy-storage units charge, then unify to power to rear end by energy-storage units.Whereby, using the power module of the present embodiment The LED straight lamp of framework can be compatible with external drive signal provided by alternating current or ballast.

From the perspective of structure, since above-mentioned auxiliary power module 2510 is the output for being connected to filter circuit 520 Hold output end (the first drive output of (the first filtering output end 521 and the second filtering output end 522) or driving circuit 1530 1521 and second drive output 1522) between, therefore in an exemplary embodiment, circuit can be placed in fluorescent tube (example In this way adjacent to LED illumination module 530 or the position of LED module 630), it uses and avoids too long cabling that power delivery is caused to damage Consumption.In another exemplary embodiment, the circuit of auxiliary power module 2510 is also possible to be placed in lamp cap, so that accessory power supply The generated thermal energy in charge and discharge of module 2510 is less susceptible to influence running and the luminous efficacy of LED module.4H referring to Figure 1, For according to the circuit diagram of the auxiliary power module of the utility model preferred embodiment.The auxiliary power module of the present embodiment 2610 can be applied in the configuration of above-mentioned auxiliary power module 2510.Auxiliary power module 2610 include energy-storage units 2613 with And voltage detection circuit 2614.Auxiliary power module 2610 and have accessory power supply anode 2611 and accessory power supply negative terminal 2612 with It is respectively coupled to the first filtering output end 521 and the second filtering output end 522 or the first drive output 1521 and the second driving is defeated Outlet 1522.Voltage detection circuit 2614 detects the level of signal on accessory power supply anode 2611 and accessory power supply negative terminal 2612, To decide whether through accessory power supply anode 2611 and accessory power supply negative terminal 2612 to discharge the electric power of energy-storage units 2613 outward.

In the present embodiment, energy-storage units 2613 are battery or super capacitor.Voltage detection circuit 2614 is more in auxiliary electricity When the level of the signal of source anode 2611 and accessory power supply negative terminal 2612 is higher than the voltage of energy-storage units 2613, just with accessory power supply Signal on end 2611 and accessory power supply negative terminal 2612 charges to energy-storage units 2613.When accessory power supply anode 2611 and auxiliary When the signal level of power supply negative terminal 2612 is lower than the voltage of energy-storage units 2613, energy-storage units 2613 are through accessory power supply anode 2611 And accessory power supply negative terminal 2612 is to external discharge.

Voltage detection circuit 2614 includes diode 2615, bipolar junction transistors 2616 and resistance 2617.Diode The anode of 2615 anode coupling energy-storage units 2613, cathode couple accessory power supply anode 2611.The cathode of energy-storage units 2613 Couple accessory power supply negative terminal 2612.The collector of bipolar junction transistors 2616 couples accessory power supply anode 2611, emitter-base bandgap grading coupling The anode of energy-storage units 2613.2617 one end of resistance couples accessory power supply anode 2611, and the other end couples bipolar junction crystal The base stage of pipe 2616.Resistance 2617 makes double when the collector of bipolar junction transistors 2616 is higher than one conducting voltage of emitter-base bandgap grading Carrier junction transistor 2616 is connected.When the power supply of driving LED straight lamp is normal, filtered signal is through the first filtering output end 521 and second filtering output end 522 and conducting bipolar junction transistors 2616 to energy-storage units 2613 charge, or driving letter Number through the first drive output 1521 and the second drive output 1522 and conducting bipolar junction transistors 2616 to energy storage Unit 2613 charges, until collector-shooting difference of bipolar junction transistors 2616 is equal to or less than conducting voltage.When When filtered signal or driving signal stop providing or level declines suddenly, energy-storage units 2613 provide electricity by diode 2615 Power is to LED illumination module 530 or LED module 630 to maintain to shine.

It is worth noting that, ceiling voltage stored when the charging of energy-storage units 2613 will be electric at least below auxiliary is applied to The conducting voltage of one bipolar junction transistors 2616 of voltage of source anode 2611 and accessory power supply negative terminal 2612.Energy-storage units It is lower than the electricity of energy-storage units 2613 when 2613 electric discharge by the voltage that accessory power supply anode 2611 and accessory power supply negative terminal 2612 export Press the threshold voltage of a diode 2615.Therefore, when auxiliary power module starts power supply, provided voltage will be lower (summation for being approximately equal to the threshold voltage of diode 2615 and the conducting voltage of bipolar junction transistors 2616).In Figure 14 G institute In the embodiment shown, voltage reduction can be such that the brightness of LED module 630 is decreased obviously when auxiliary power module is powered.In this way, when auxiliary When power module being helped to be applied to emergency lighting system or be always on lighting system, user is known that key lighting power supply, such as: city Electricity, it is abnormal, and the necessary precautionary measures can be carried out.

The configuration of Figure 14 F to Figure 14 H embodiment, can be with other than the emergency power supply that can be applicable to single fluorescent tube is supplied It applies under the lamps and lanterns framework of more fluorescent tubes.By taking the lamps and lanterns with 4 LED straight lamps arranged in parallel as an example, in example reality It applies in example, it includes auxiliary power module that 4 LED straight lamps, which can be one of them,.When external drive abnormal signal, It include that the LED straight lamp of auxiliary power module can be persistently lit, and other LED straight lamps can extinguish.In view of illumination Uniformity, the LED straight lamp for being provided with auxiliary power module can be disposed on the middle position of lamps and lanterns.

In another exemplary embodiment, it includes auxiliary power module that 4 LED straight lamps, which can be plurality of,. It include that the LED straight lamp of auxiliary power module can be lighted all by auxiliary power simultaneously when external drive abnormal signal. In this way, which even if lamps and lanterns integrally still provide certain brightness in the case where emergency.In view of the uniformity of illumination, if It is for 2 LED straight lamps are set and include auxiliary power module, this two LED straight lamps can be and be not provided with auxiliary The LED straight lamp of power module is helped to be staggered configuration.

In another exemplary embodiment, it includes auxiliary power module that 4 LED straight lamps, which can be plurality of,. When external drive abnormal signal, part of LED straight lamp can be lighted first by auxiliary power, and after a period of time (e.g.), another part LED straight lamp is lighted by auxiliary power again.In this way, which the present embodiment can pass through and other fluorescent tubes Coordinate to provide the mode of auxiliary power sequence, so that lighting hours of the LED straight lamp under emergency rating is extended.

Wherein, the embodiment for coordinating to provide auxiliary power sequence from other fluorescent tubes can be through in the different fluorescent tubes of setting Auxiliary power module the starting time, or link up auxiliary power module through the mode that controller is arranged in each fluorescent tube Between operating state, the utility model limits not to this.

4I referring to Figure 1, Figure 14 I are the power module according to the LED straight lamp of the 7th preferred embodiment of the utility model Application circuit block schematic diagram.The LED straight lamp of the present embodiment includes rectification circuit 510, filter circuit 520, LED illumination mould Block 530 and auxiliary power module 2710.The LED illumination module 530 of the present embodiment can be only including LED module or including driving Circuit and LED module, the utility model are not limited.Compared to Figure 14 G illustrated embodiment, the accessory power supply mould of the present embodiment Block 2710 is connected between the first pin 501 and the second pin 502, is used and is received external drive signal, and based on outside Driving signal carries out the movements of charge and discharge.

Specifically, in one embodiment, the running of auxiliary power module 2710 can be similar to off-line type uninterrupted power system (Off-line UPS).Power it is normal when, external electrical network/external drive signal can directly supply power to rectification circuit 510 and It charges simultaneously for auxiliary power module 2710；Once mains-supplied quality is unstable or power-off, auxiliary power module 2710 can be cut off Circuit between external electrical network and rectification circuit 510, and be changed to supply power to rectification circuit 510 by auxiliary power module 2710, Until power grid service restoration is normal.In other words, the auxiliary power module 2710 of the present embodiment can be for example in a manner of redundant formula Running, only can just intervene power supply in grid cut-off.In this, the power supply that auxiliary power module 2710 is supplied can for alternating current or Direct current.

In an exemplary embodiment, auxiliary power module 2710 is for example comprising energy-storage units and voltage detection circuit, electricity Pressure circuit for detecting can detect external drive signal, and decide whether to enable energy-storage units to provide auxiliary power to whole according to detecting result The input terminal of current circuit 510.When external drive signal stops providing or exchanging level deficiency, auxiliary power module 2710 Energy-storage units provide auxiliary power, and LED illumination module 530 is allow to be based on auxiliary power provided by auxiliary energy storage unit and hold Supervention light.In practical applications, the energy-storage units to provide auxiliary power can use the storage such as battery or super capacitor Can component implement, but the utility model is not limited.

In another exemplary embodiment, as shown in Figure 14 J, auxiliary power module 2710 for example comprising charhing unit 2712 with Auxiliary power unit 2714, the input terminal of charhing unit 2712 are connected to external electrical network EP, and the output of charhing unit 2712 End is connected to the input terminal of auxiliary power unit 2714.The output end of auxiliary power unit 2714 be connected to external electrical network EP with it is whole Current supply circuit between current circuit 510.Switch unit 2730 is further included in system, is respectively connected to external electrical network EP, auxiliary supplies The output end of electric unit 2714 ' and the input terminal of rectification circuit 510, wherein switch unit 2730 can be according to external electrical network EP's Power supply state and selectivity conducting external electrical network EP and rectification circuit 510 between circuit or auxiliary power module 2710 With the circuit between rectification circuit 510.Specifically, when external electrical network EP power supply is normal, electricity that external electrical network EP is supplied Power can be provided to the input terminal of rectification circuit 510 as external drive signal Sed by switch unit 2720.At this point, charging is single Member 2712 can charge to auxiliary power unit 2714 based on the electric power that external electrical network EP is supplied, and auxiliary power unit 2714 It can discharge in response to the external drive signal Sed of the normal transmission on current supply circuit without the rectification circuit 510 to rear end.When outer When power grid EP power supply in portion is abnormal or powers off, auxiliary power unit 2714 begins through the electric discharge of switch unit 2720 to provide Auxiliary power is as external drive signal Sed to rectification circuit 510.

Figure 14 K is please referred to, Figure 14 K is the power module according to the LED straight lamp of the 8th preferred embodiment of the utility model Application circuit block schematic diagram.The LED straight lamp of the present embodiment includes rectification circuit 510, filter circuit 520, LED illumination mould Block 530 and auxiliary power module 2710 '.Compared to Figure 14 I illustrated embodiment, the auxiliary power module 2710 ' of the present embodiment Input terminal Pi1 and Pi2 can receive external drive signal, and the movement of charge and discharge is carried out based on external drive signal, then will Generated accessory power supply is supplied to the rectification circuit 510 of rear end from output end Po1 and Po2.From the angle of LED straight lamp structure From the point of view of, the first pin (such as 501) and the second pin (such as 502) of LED straight lamp can be the input of auxiliary power module 2710 ' Hold Pi1 and Pi2 or output end Po1 and Po2.If the first pin 501 and the second pin 502 are auxiliary power module 2710 ' The inside that LED straight lamp is arranged in input terminal Pi1 and Pi2, i.e. expression auxiliary power module 2710 '；If the first pin 501 and Two pins 502 are the output end Po1 and Po2 of auxiliary power module 2710 ', i.e. expression auxiliary power module 2710 ' setting exists The outside of LED straight lamp.Subsequent implementation regular meeting is described further the specific structure configuration of auxiliary power module.

In one embodiment, the running of auxiliary power module 2710 ' is similar to online uninterrupted power system (On-line UPS), external electrical network/external drive signal will not directly supply electricity to rectification circuit 510, but can penetrate auxiliary power module 2710 ' are powered.In other words, in the present embodiment, external electrical network can be mutually isolated with LED straight lamp, and assist electricity Source module 2710 ' is whole intervention during LED straight lamp starting/electricity consumption, so that being supplied to rectification circuit 510 power supply is not influenced by external electrical network power supply instability.

Preferably, when external drive is signal-powered normal, external drive signal is provided by auxiliary power module 2710 ' To the input terminal of rectification circuit 510, and external drive signal charges to auxiliary power module 2710 '；And work as external drive When signal-powered abnormal, auxiliary power module 2710 ' provides the accessory power supply of itself to the input terminal of rectification circuit 510.

Figure 14 L is painted the example configuration of the auxiliary power module 2710 ' of online operation.As shown in Figure 14 L, Figure 14 L institute The auxiliary power module 2710 ' of offer includes: auxiliary power unit 2714 ', has first input end, the second input terminal and output End, the second input terminal receive external drive signal, and output end connects the input terminal of rectification circuit 510, wherein auxiliary power supply Unit 2714 ' is used to provide accessory power supply from its output end；And

Charhing unit 2712 ', input terminal receive external drive signal, and output end connects auxiliary power unit 2714 ' First input end, wherein charhing unit 2712 ' be used for by external drive signal be auxiliary power unit 2714 ' filled Electricity,

Wherein, when external drive is signal-powered normal, external drive signal that auxiliary power unit 2714 ' will receive It is provided to the input terminal of rectification circuit 510；And when external drive is signal-powered abnormal, auxiliary power unit 2714 ' is generated Accessory power supply is provided to the input terminal of rectification circuit 510.

Specifically, auxiliary power module 2710 ' includes charhing unit 2712 ' and auxiliary power unit 2714 '.Charging is single The input terminal of member 2712 ' is connected to external electrical network EP, and the output end of charhing unit 2712 ' is connected to auxiliary power unit 2714 ' first input end.Second input terminal of auxiliary power unit 2714 ' is connected to external electrical network EP (external drive letter Number), and its output end is connected to rectification circuit 510.Specifically, when external electrical network EP power supply is normal, auxiliary power supply list Member 2714 ' can carry out power supply conversion based on electric power provided by external electrical network EP, and generate external drive signal Sed accordingly To the rectification circuit 510 of rear end；During this period, charhing unit 2712 ' simultaneously can be to the energy storage in auxiliary power unit 2714 ' Unit charges.When external electrical network EP power supply is abnormal or powers off, storage of the meeting of auxiliary power unit 2714 ' based on itself Electric power provided by energy unit carries out power supply conversion, and generates external drive signal Sed accordingly to the rectification circuit of rear end 510.It is attached to one herein to be mentioned that, power supply switching motion as described herein can be the circuits such as rectification, filtering, boosting and decompression fortune One of work or its reasonable combination, the utility model are not limited.

In another embodiment, the running of auxiliary power module 2710 ' is similar to Line interaction uninterrupted power system (Line-Interactive UPS), running is similar to off-line type uninterrupted power system substantially, but difference is in online interaction Under the running of formula, auxiliary power module 2710 ' can monitor at any time the electric power thus supplied of external electrical network, and itself have boosting With decompression compensation circuit, corrected immediately when external electrical network electric power thus supplied is undesirable, and then reduces switching and carried out using battery The frequency of power supply.

In the present embodiment, when external drive is signal-powered normal, external drive signal is connect by the first pin and second Foot is provided to the input terminal of rectification circuit 510, and external drive signal auxiliary power module 2714 ' charges；And when outside When driving signal abnormal electrical power supply, auxiliary power module 2714 ' cuts off the circuit between external drive signal and rectification circuit 510, Auxiliary power module 2710 ' provides the input terminal of accessory power supply to rectification circuit 510.

Figure 14 M is painted the example configuration of the auxiliary power module 2710 ' of online interactive operation.As shown in Figure 14 M, figure The auxiliary power module 2710 ' that 14M is provided includes: switch unit 2716 ', has first end, second end and third end, the One end receive external drive signal, its second end connection rectification circuit 510 input terminal, wherein switch unit 2716 ' first End constitutes the first current supply circuit with second end, and the second end of switch unit 2716 ' and third end constitute the second current supply circuit, switch One of first current supply circuit of conducting and the second current supply circuit of 2716 ' selectivity of unit；

Auxiliary power unit 2714 ', the third end of output end connection switch unit 2716 ', for being mentioned from its output end For accessory power supply；And

Charhing unit 2712 ', input terminal receive external drive signal, and output end connects auxiliary power unit 2714 ' Input terminal, wherein charhing unit 2712 ' be used for by external drive signal be auxiliary power unit 2714 ' charge,

Wherein, when external drive is signal-powered normal, switch unit 2716 ' is connected the first current supply circuit and ends second Current supply circuit；And when external drive is signal-powered abnormal, switch unit 2716 ' ends the first current supply circuit and is connected second Current supply circuit.

Specifically, auxiliary power module 2710 ' includes that charhing unit 2712 ', auxiliary power unit 2714 ' and switch are single Member 2716 '.The input terminal of charhing unit 2712 ' is connected to external electrical network EP (external drive signal), and charhing unit 2712 ' output end is connected to the input terminal of auxiliary power unit 2714 '.Switch unit 2716 ' is respectively connected to external electrical network The input terminal of EP, the output end of auxiliary power unit 2714 ' and rectification circuit 510, wherein switch unit 2716 ' can be according to outer The power supply state of portion power grid EP and the circuit between the conducting external electrical network EP and rectification circuit 510 of selectivity, or auxiliary confession Circuit between electric unit 2714 ' and rectification circuit 510.Specifically, when external electrical network EP power supply is normal, switch unit 2716 ' can be connected the circuit between external electrical network EP and rectification circuit 510, and disconnect auxiliary power unit 2714 ' and rectification Circuit between circuit 510, so that the electric power that external electrical network EP is supplied passes through switch unit as external drive signal Sed 2716 ' are provided to the input terminal of rectification circuit 510.At this point, the electric power that charhing unit 2712 ' can be supplied based on external electrical network EP It charges to auxiliary power unit 2714 '.When external electrical network EP power supply is abnormal or powers off, switch unit 2716 ' can switch For the circuit between auxiliary power unit 2714 ' and rectification circuit 510 is connected, so that auxiliary power unit 2714 ' starts to discharge To provide auxiliary power as external drive signal Sed to rectification circuit 510.

In the above-described embodiments, auxiliary power provided by the auxiliary power unit 2714/2714 ' can for alternating current or Direct current.When the electric power of offer is alternating current, auxiliary power unit 2714/2714 ' is for example including an energy-storage units and always It circulates a-c transducer (DC-AC converter)；When the electric power of offer is direct current, auxiliary power unit 2714/2714 ' It for example including an energy-storage units and circulation direct current transducer (DC-DC converter) always, or only include energy-storage units, this reality It is not limited with novel.The energy-storage units may be, for example, the battery module of several energy-storage battery combinations.The direct current turns straight Stream transformer may be, for example, booster type, voltage-dropping type or falling-rising die mould DC-to-DC switching circuit.Wherein, auxiliary power module 2710/2710 ' further includes voltage detecting circuit (not being painted).Voltage detecting circuit can be used to detect the work shape of external electrical network EP State, and control switch unit 2730/2716 ' or auxiliary power unit 2714 ' are sent signals to according to detecting result, it uses certainly The work of LED straight lamp is determined in general lighting mode (that is, powering by external electrical network EP) or contingency mode (that is, by auxiliary electricity Source module 2710/2710 ' is powered).Wherein, the switch unit 2730/2716 ' can use three-terminal switch or complementary switching Two switches realize.Implement according to two switches of complementation switching, then two switch can be serially connected in external electrical network EP respectively Current supply circuit on and the current supply circuit of auxiliary power module 2710/2710 ' on；And control mode is one of them switch When conducting, wherein another switch ends.

In an exemplary embodiment, relay is can be used to implement in the switch unit 2730/2716 '.The relay class It is similar to the selection switch of 2 kinds of modes, it, should after energization if working in general lighting mode (i.e. alternating current is as external drive signal) Relay power is attracted, and at this moment the power module of LED straight lamp is not electrically connected with auxiliary power module 2710/2710 '；If city Electrical anomaly, the electromagnetic attraction of the relay disappear, and restore to the power module of initial position at this moment LED straight lamp to pass through relay Device and auxiliary power module are electrically connected 2710/2710 ', and auxiliary power module is made to work.

From the perspective of integral illumination system, apply in general lighting occasion, auxiliary power module 2710/2710 ' It does not work, LED illumination module 530 is supplied electricity to by city, electric power is provided；And the charging of the battery module in auxiliary power module is supplied electricity to by city. Apply when meeting an urgent need occasion, battery module by Boost DC to-DC switching circuit by the boost in voltage of battery module extremely Required voltage when working of LED illumination module 530, LED illumination module 530 shine.Voltage is battery mould before boosting usually after boosting 4~10 times (preferably selecting 4~6 times) of block voltage；When LED illumination module 530 works required voltage between 40~80V (compared with Good selects 60V in 55~75V, this case).

In the present embodiment, single battery cylindrical is selected；The battery is encapsulated using metal-back, can be reduced in battery The risk of electrolyte leakage.

In the present embodiment, battery uses modular design, and using 2 battery strings connections, then encapsulation constitutes an electricity Chi Mo group, the electric connection of mould group sequentially, forms the two poles of the earth of battery module；It is easily installed in this way.Battery module is set when installing It sets in lamps and lanterns, in this way it is safeguarded convenient for the later period；If there is part of battery module damage, the battery mould of damage can be replaced in time Block, without replacing entire battery module.Battery modules can be set to cylindrical shape, and internal diameter is slightly larger than the outer diameter of battery, this Sample battery is sequentially put into battery modules, forms positive terminal and negative pole end at the both ends of battery modules.What multiple mould groups were electrically connected The voltage of battery module is lower than 36V, reduces the cost of later maintenance.In other examples, battery modules are arranged to rectangular Body shape, the width of cuboid are slightly larger than the outer diameter of battery, and such battery is firmly clipped in battery modules, which is equipped with and adopts With the pluggable structure of buckle-type or other structures that can be easy plug assembly.

In the present embodiment, the charhing unit 2712/2712 ' may be, for example, the BMS module (battery for managing battery module Management system), intelligent management and each battery module of maintenance are mainly aimed at, prevents battery from overcharge and over-discharge occur Electricity extends the service life of battery, monitors the state of battery.

The BMS module default interface that can be external reads electricity in battery module by connecting the interface when periodic detection The information in pond.If it is detected that battery modules replace corresponding battery modules when having exception.

In other examples, the number of batteries in battery modules can be more, and such as 3,4,30 etc., at this moment battery Series connection can be sampled between battery in mould group, series-parallel mixed connection connects, the occasion of specific view application；It is single when according to lithium battery The voltage 3.7V or so of lithium battery, number of batteries can suitably be reduced so that the voltage of battery system lower than 36V.

Relay in the present embodiment selects electromagnetic type relay, mainly by iron core, coil, armature, contact reed etc. Composition.Its working principle: as long as adding certain voltage at coil both ends, will pass through certain electric current in coil, thus Galvanomagnetic-effect is generated, armature will overcome the pulling force of return spring to be drawn to iron core under the action of electromagnetic attracting force, to drive The movable contact and stationary contact (normally opened contact) of armature are attracted.After coil blackout, the suction of electromagnetism also disappears therewith, and armature will Restore to be attracted movable contact and original stationary contact (normally-closed contact) to initial position in the reaction force of spring.It inhales in this way It closes, release, to achieve the purpose that conducting in circuit, cutting.It, can be with for " normally opened, normally closed " contact of relay It distinguishes in this way: the stationary contact being in an off state when relay coil is not powered on, referred to as " normally opened contact "；In an ON state Stationary contact be known as " normally-closed contact ".

In an exemplary embodiment, LED module be driven externally brightness that signal is lighted with lighted by auxiliary power it is bright Degree is different.Whereby, user can when observing that lighting tube brightness changes, the problem of having had found that it is likely that external power supply abnormal electrical power supply hair It is raw, thus queueing problem as quickly as possible.In other words, the auxiliary power module 2710 of the present embodiment can occur by external driving signal When abnormal, the power auxiliary power different from external drive signal is provided and is used to LED module, so that LED module be enabled to have not With brightness, using as external drive signal whether the instruction of normal supply.For example, in the present embodiment, work as LED module It is when being lighted according to external drive signal, brightness may be, for example, 1600-2000 lumen；When LED module is according to accessory power supply When auxiliary power provided by module 2710 is lighted, brightness may be, for example, 200-250 lumen.From auxiliary power module 2710 From the perspective of, in order to allow brightness of the LED module when lighting with 200-250 lumen, the output of auxiliary power module 2710 Power can be, for example, 1 watt to 5 watts, but the utility model is not limited.In addition, the energy storage group in auxiliary power module 2710 The capacitance of part may be, for example, 1.5 watts of hours to 7.5 watts more than hour, and using makes LED module can be based on auxiliary power and bright It persistently lights under degree 200-250 lumen more than 90 minutes, but the utility model is equally not limited.

From the perspective of structure, as shown in Figure 14 N, Figure 14 N is the auxiliary electricity according to the utility model preferred embodiment Configuration schematic diagram of the source module in fluorescent tube.In the present embodiment, the auxiliary power module 2710/2710 ' is (to make to illustrate Briefly, 2710 are only indicated in schema, beneath also to be described with auxiliary power module 2710) in addition to that can be configured such as previous embodiment Except in the lamp vessel 1, it can also configure in lamp cap 3.Under this configuration, auxiliary power module 2710 can be from lamp cap 3 It is connected internally to corresponding first foot position 501 and crus secunda position 502, reception is used and is provided to the first foot position 501 and crus secunda position External drive signal on 502.For auxiliary power module 2710 is placed in the configuration in fluorescent tube 1, due to this implementation Example auxiliary power module 2710 be disposed in the lamp cap 3 of 1 two sides of fluorescent tube, therefore can apart from the LED module in fluorescent tube 1 compared with Far, so that the generated thermal energy in charge and discharge of auxiliary power module 2710, which is less susceptible to, influences the running of LED module and the effect that shines Energy.In addition to this, the power module of auxiliary power module 2710 and LED straight lamp can be only fitted in the lamp cap of the same side, or point It is not placed in the lamp cap of two sides.Wherein, if auxiliary power module 2710 is placed in different lamp caps from power module can make entirety Circuit layout has bigger space.

In another embodiment, the auxiliary power module 2710 also may be provided at lamp holder corresponding with LED straight lamp In, as shown in Figure 14 O, Figure 14 O is to be shown according to configuration of the auxiliary power module of the utility model preferred embodiment in lamp holder It is intended to.Lamp holder 1_LH includes pedestal 101_LH and connection socket 102_LH, is wherein equipped with power circuit in pedestal 101_LH, And be suitable for it is sealed/conform on the fixed object such as metope or ceiling.Connect socket 102_LH on have on LED straight lamp The corresponding slot of pin (such as the first pin 501 with the second pin 502), wherein slot can be mutual with corresponding power circuit It is electrically connected.In the present embodiment, connection socket 102_LH can be integrally formed with pedestal 101_LH, or removably fill If the utility model is not limited to pedestal 101_LH.

When LED straight lamp loads onto lamp holder 1_LH, the pin on both ends lamp cap 3 can be plugged respectively to corresponding connection socket In the slot of 102_LH, uses and be electrically connected with corresponding power circuit, it is corresponding to enable external drive signal may be provided to On pin.In the present embodiment, auxiliary power module 2710 is setting in connection socket 102_LH, and connects power circuit To receive external drive signal.By taking the configuration of left side lamp cap 3 as an example, when the first pin 501 and the second pin 502 are plugged to left side When connecting the slot of socket 102_LH, auxiliary power module 2710 can be electrically connected the first pin 501 by slot and connect with second Foot 502, and then realize that the connection such as Figure 14 I configures.

For auxiliary power module 2710 is placed in the embodiment in lamp cap 3, since connection socket 102_LH can It is designed as removably configuring, therefore in an exemplary embodiment, connection socket 102_LH and auxiliary power module 2710 can be with It is integrated into a modular configuration, so as to when auxiliary power module 2710 breaks down or the service life uses up, through replacement Modular connection socket 102_LH takes on new auxiliary power module 2710 to continue to use, without replacing entirely LED straight lamp.In other words, the configuration of the present embodiment can reduce thermal energy caused by auxiliary power module 2710 in addition to having Except the advantages of influencing on LED module, more it can make the replacement of auxiliary power module 2710 more through modular design Simplicity makes the durability of LED straight lamp without replacing whole branch LED straight lamp because of 2710 generation problem of auxiliary power module It improves.In addition to this, in an exemplary embodiment, the pedestal 101_ in lamp holder 1_LH is also can be set in auxiliary power module 2710 In LH or the outside of lamp holder 1_LH is set, the utility model is not limited.

Generally speaking, auxiliary power module 2710 can be divided into (1) and be incorporated into inside LED straight lamp, and (2) independently of Two kinds of configuration modes such as LED straight lamp outside.In auxiliary power module 2710 independently of the example arrangement outside LED straight lamp In, if the accessory power supply power supply mode of off-line type, then auxiliary power module 2710 and the power supply of external electrical network can be via not Same pin is given to LED straight lamp, or is given to LED straight lamp in a manner of at least sharing a piece-root grafting foot.On the other hand, if Online or Line interaction accessory power supply power supply mode, then the electric power signal of external electrical network will not directly be given to LED straight tube On the pin of lamp, but it can be first given to auxiliary power module 2710, then LED straight lamp can be passed through by auxiliary power module 2710 Signal is given to the power module inside LED straight lamp by pin.It is beneath just independently of the auxiliary power module outside LED straight lamp (abbreviation independent power supply module) and the configured in one piece of LED straight lamp are described further.

4P referring to Figure 1, Figure 14 P are the LED straight tube lamp illuminating system according to the first preferred embodiment of the utility model Application circuit block schematic diagram.LED straight tube lamp illuminating system includes LED straight lamp 500 and auxiliary power module 2810.This reality The LED straight lamp 500 for applying example includes rectification circuit 510 and 540, filter circuit 520 and LED illumination module 530.The present embodiment LED illumination module 530 can be only including LED module or including driving circuit and LED module, and the utility model is not limited. Rectification circuit 510 and 540 can be halfwave rectifier depicted in full-wave rectifying circuit 610 or Fig. 9 B depicted in Fig. 9 A respectively Circuit 710, wherein two input terminals of rectification circuit 510 are separately connected the first pin 501 and the second pin 502, and rectified current Two input terminals on road 540 are separately connected third pin 503 and the 4th pin 504.

In the present embodiment, LED straight lamp 500 is using both-end into electric configuration as example, and external electrical network EP is connection Pin 501 and 502 to 500 two sides lamp cap of LED straight lamp, and auxiliary power module 2810 is to be connected to LED straight lamp Pin 503 and 504 on 500 two sides lamp caps.Also that is, external electrical network EP from auxiliary power module 2810 is by different pins Supply electricity to the use of LED straight lamp 500.It subsidiary one is mentioned that in this, though the present embodiment is schematically shown as both-end into for the configuration of electricity, The utility model is not limited.In another embodiment, external electrical network EP can also be connect by first on the lamp cap of the same side Foot 501 and the second pin 502 power supply (that is, single-ended configuration into electricity).At this point, auxiliary power module 2810 can pass through another side lamp Third pin 503 and the 4th pin 504 on head are powered.In other words, no matter under the single-ended configuration into electricity or both-end into electricity, Through the configuration of corresponding rectification circuit is selected, i.e., using be originally not used by LED straight lamp 500 pin (such as 503 with 504) as receive accessory power supply interface, and then in LED straight lamp 500 realize function of emergency illumination integration.

4Q referring to Figure 1, Figure 14 Q are the LED straight tube lamp illuminating system according to the second preferred embodiment of the utility model Application circuit block schematic diagram.LED straight tube lamp illuminating system includes LED straight lamp 500 ' and auxiliary power module 2910.This The LED straight lamp 500 ' of embodiment includes rectification circuit 510 ', filter circuit 520 and LED illumination module 530.The present embodiment LED illumination module 530 equally can only include LED module or including driving circuit and LED module, the utility model not as Limit.Rectification circuit 510 ' can be for example the rectification circuit 910 having as shown in one of Fig. 9 D to Fig. 9 F there are three bridge arm, Wherein there are three input signal receiving end P1, P2 and P3 for the tool of rectification circuit 510 '.Input signal receiving end P1 is connected to first and connects Foot 501, input signal receiving end P2 are connected to the second pin 502 and auxiliary power module 2910, and input signal receiving end P3 is connected to auxiliary power module 2910.

In the present embodiment, LED straight lamp 500 ' is equally using both-end into electric configuration as example, and external electrical network EP is The pin 501 and 502 being connected on 500 ' two sides lamp cap of LED straight lamp.Unlike previous embodiment, the present embodiment it is auxiliary It helps power module 2910 other than it can be connected to third pin 503, can also share the second pin 502 with external electrical network EP.Herein Under configuration, power supply provided by external electrical network EP is to be given to rectification circuit 510 ' by the first pin 501 and the second pin 502 Signal receiving end P1 and P2, and power supply provided by auxiliary power module 2910 is to be connect by third pin 503 with second Foot 502 is given to the signal receiving end P3 and P2 of rectification circuit 510 '.More specifically, if external electrical network EP is couple to the first pin 501 and second the route of pin 502 be respectively firewire (L) and when the neutral conductor (N), then auxiliary power module 2910 is and outside Power grid EP shares the neutral conductor (N), and firewire is then respective independence.In other words, signal receiving end P2 be external electrical network EP with it is auxiliary Help the shared end of power module 2910.

With regard to operate it is upper for, when external electrical network EP can normal power supply when, rectification circuit 510 ' can pass through signal receiving end P1 Full-wave rectification is carried out with bridge arm corresponding to P2, uses and supplies electricity to the use of LED illumination module 530.It powers in external electrical network EP different Chang Shi, rectification circuit 510 ' can pass through signal receiving end P3 and P2 and receive accessory power supply provided by auxiliary power module 2910, It uses and supplies electricity to the use of LED illumination module 530.Wherein, the diode unilateral conduction characteristic of rectification circuit 510 ' can drive outside Dynamic signal is isolated with the input of accessory power supply, so that the two will not interact, and equally be can reach and is occurred in external electrical network EP The effect of accessory power supply is provided when abnormal.In practical applications, rectification circuit 510 ' can select fast recovery diode real It applies, uses the high frequency characteristics in response to emergency power supply output electric current.

In addition to this, since the present embodiment receives auxiliary power module 2910 through the mode for sharing the second pin 502 Provided accessory power supply, therefore LED straight lamp 500 ' also has the 4th pin 504 that one is not used by can be used as other The signal input interface of control function.Other described control functions may, for example, be dimming function, communication function, sensing function Deng the utility model is not limited.The beneath implementation example enumerated LED straight lamp 500 ' and further integrate dimming control function To be illustrated.

4R referring to Figure 1, Figure 14 R are the LED straight tube lamp illuminating system according to the utility model third preferred embodiment Application circuit block schematic diagram.The LED straight lamp 500 ' of the present embodiment includes rectification circuit 510 ', filter circuit 520, driving electricity Road 1530 and LED module 630.The present embodiment LED straight tube lamp illuminating system configuration generally with earlier figures 14Q embodiment phase Together, the two difference is that the LED straight tube lamp illuminating system of the present embodiment further includes the 4th pin of coupling LED straight lamp 500 ' 504 adjusting control circuit 550, wherein adjusting control circuit 550 can couple driving circuit 1530 by the 4th pin 504, by To regulate and control the driving current that driving circuit 1530 is supplied to LED module 630, so that the brightness of LED module 630 and/or colour temperature can Change therewith.

For example, adjusting control circuit 550 may, for example, be is made of variable impedance element and signal conversion circuit Circuit module, user can by regulate and control variable impedance element impedance so that adjusting control circuit 550 generate have phase The dim signal of level is answered, the dim signal meets the signal of 1530 format of driving circuit being converted to through signal conversion circuit After kenel, it is delivered to driving circuit 1530, so that driving circuit 1530 can be adjusted output based on this dim signal and give LED mould The driving current size of block 630.It wherein, can be by adjusting the frequency of driving signal if the brightness of LED module to be adjusted 630 Or it realizes with reference to level；It, can be by adjusting the red LED list in LED module 630 if the colour temperature of LED module 630 to be adjusted The brightness of member is realized, but the utility model is not limited.

It should further be appreciated that the auxiliary power module 2810,2910 is also referred to Figure 14 N in hardware configuration With the configuration of 14O, and identical beneficial effect can get.

The configuration of Figure 14 I to Figure 14 R embodiment is same other than the emergency power supply that can be applicable to single fluorescent tube is supplied It can apply under the framework of more fluorescent tube parallel connections and the auxiliary power of emergency is provided.Specifically, multiple LED straight lamps simultaneously Under the framework of connection, the corresponding pin of each LED straight lamp can be connected with each other, uses and receives identical external drive signal.Citing comes It says, the first pin 501 of each LED straight lamp can be connected with each other, and the second pin of each LED straight lamp can be connected with each other, with This analogizes.Herein under configuration, auxiliary power module 2710 can be equivalent to the pin for being connected to every LED straight lamp in parallel On.It therefore, can be in outside as long as the output power of auxiliary power module 2710 lights the LED straight lamp of all parallel connections enough When power supply is abnormal (that is, external drive signal can not regular supply), auxiliary power be provided to light the LED of all parallel connections Straight lamp is as emergency lighting.In practical applications, if by taking the framework of 4 LED straight lamp parallel connections as an example, auxiliary power module 2710 may be designed as having capacitance be 1.5 watts of hours be 1 watt to 5 watts to 7.5 watts of hours and output power energy-storage units.? Under this specification, when auxiliary power module 2710 provides auxiliary power to light LED module, lamps and lanterns integrally can at least have The brightness of 200-250 lumen, and sustainable light 90 minutes.

Under the lamps and lanterns framework of more fluorescent tubes, it is similar to described in Figure 14 F to Figure 14 H embodiment, the present embodiment can be in lamp Auxiliary power module is set in a wherein fluorescent tube for tool, or auxiliary power module is set in more fluorescent tubes of lamps and lanterns, In for optical uniformity consider fluorescent tube configuration mode it is equally applicable in this present embodiment.The present embodiment and earlier figures 14F extremely scheme 14H embodiment applies the main difference under the lamps and lanterns framework of more fluorescent tubes to be only have single fluorescent tube to be provided with even if the present embodiment Auxiliary power module still can pass through auxiliary power module to other lamp tube power supplies.

It should be noted herein that although explanation herein is illustrated by taking 4 LED straight lamp parallel configurations as an example, this Field technical staff is after considering above-mentioned explanation in light of actual conditions, it should be appreciated that how LED straight lamp at 2,3 or greater than 4 is in parallel Under framework, suitable energy-storage units is selected to implement, as long as therefore auxiliary power module 2710 can supply electricity to more Zhi Binglian simultaneously One of LED straight lamp or multiple, there is certain luminance to enable corresponding LED straight lamp that can react on auxiliary power State sample implementation, come under range described in the present embodiment.

In another exemplary embodiment, the auxiliary power module 2510,2610,2710,2810,2910 of Figure 14 I to 14R It can decide whether that provide auxiliary power uses to LED straight lamp according further to some modulating signals.Specifically, the lighting Signal can be an indication signal of reaction lamp switching state.For example, the level of described modulating signal can be according to lamp The switching of switch and be adjusted to the first level (for example, high logic level) or second level different from the first level (such as For low logic level).When lamp switch is switched to the position lighted by user, described modulating signal can be adjusted to the first standard Position；When lamp switch is switched to the position of closing by user, described modulating signal can be adjusted to the second level.In other words, when When point modulating signal is the first level, i.e., indicator light switch is switched to the position lighted；When modulating signal is the second level, i.e., Indicator light switch is switched to the position of closing.Wherein, the generation for putting modulating signal can be by a detecting lamp switch switching state Circuit realize.

In another exemplary embodiment, auxiliary power module 2510,2610,2710,2810,2910 can further include a lighting Decision circuitry, to receiving point modulating signal, and according to the level of modulating signal and the detecting result of voltage detection circuit come Decide whether that energy-storage units is enabled to supply electricity to rear end use.Specifically, level and voltage detection circuit based on modulating signal Detecting result may have following three state: (1) putting modulating signal as the first level and external drive signal normally provides；(2) point Modulating signal is the first level and the stopping of external drive signal provides or exchange level deficiency；And (3) point modulating signal is second quasi- Position and external drive signal stop providing.Wherein, state (1) is that user opens lamp switch and the normal feelings of external power supply power supply Condition, state (2) are that user opens lamp switch but external power supply is abnormal, state (3) is that user's closing lamp switch makes External power supply is stopped offer.

In this exemplary embodiment, state (1) and state (3) come under normal state, i.e., when user turns on light outside External power supply stops providing when power supply normally provides and user turns off the light.Therefore, under state (1) and state (3), auxiliary Power module will not provide auxiliary power to rear end.More specifically, lighting decision circuitry can be according to state (1) and state (3) Judging result, enable energy-storage units not to rear end power.It wherein, under state (1) is directly inputted by external drive signal Rectification circuit 510, and external drive signal charges to energy-storage units；It is that the stopping of external drive signal mentions under state (3) For, therefore do not charge to energy-storage units.

Under state (2), indicate user when turning on light external power supply not normal power supply to LED straight lamp, so when Lighting decision circuitry can enable energy-storage units to power rear end, so that 530 base of LED illumination module according to the judging result of state (2) The auxiliary power provided by energy-storage units shines.

Base this, the lighting decision circuitry application under, LED illumination module 530 can have three sections of different brightness Variation.When first segment is external power supply normal power supply, LED illumination module 530 have the first brightness (such as 1600-2200 stream It is bright), when second segment is that the non-normal power supply of external power supply and changing is powered with auxiliary power, LED illumination module 530 has the second brightness (such as 200-250 lumen), third section is that user voluntarily closes power supply, so that external power supply is not provided with to LED straight tube Lamp, LED illumination module 530 has third brightness (not lighting LED module) at this time.

More specifically, the lighting decision circuitry may be, for example, to be serially connected in accessory power supply from the point of view of collocation Figure 14 H embodiment Switching circuit (not being painted) between anode 2611 and accessory power supply negative terminal 2612, the control terminal receiving point of the switching circuit Modulating signal.Wherein, when modulating signal is the first level, the switching circuit can react on a modulating signal and be connected, Jin Er When external drive signal regular supply, charge through accessory power supply anode 2611 and accessory power supply negative terminal 2612 to energy-storage units 2613 (state 1)；Or external driving signal stop provide or exchange level deficiency when, enable energy-storage units 2613 through accessory power supply just End 2611 provides auxiliary power with accessory power supply negative terminal 2612 and uses (shape to the LED illumination module 530 or LED module 630 of rear end State 2).On the other hand, when modulating signal is the second level, the switching circuit can react on a modulating signal and end, at this time Even if external drive signal stops providing or exchange level is insufficient, energy-storage units 2613 will not provide auxiliary power to rear end.

In the application of above-mentioned auxiliary power module, if by the circuit design of auxiliary power unit (such as 2714 and 2714 ') At opened loop control, i.e. the output voltage of auxiliary power unit is without feedback signal, if when load open circuit, will lead to the accessory power supply mould The output voltage of block rises always, and then burns.In order to solve described problem, this exposure proposes multiple auxiliary with open-circuit-protection The circuit embodiments for helping power module, as shown in Figure 14 S.

Referring to Figure 14 S, Figure 14 S is the structural representation for the auxiliary power module that one preferred embodiment of the utility model provides Figure.Auxiliary power module provided in this embodiment includes: energy-storage units 4511, transformer, switching switch 4512, first diode 4514, first capacitor 4513, sampling module 4518 and chip control module 5511, wherein

Energy-storage units 4511 include cathode output end and cathode output end；

The source electrode of switching switch 4512 is connected and is grounded with cathode output end, switches the grid and chip controls of switch 4512 The output end of module 5511 is connected；

The Same Name of Ends of transformer, the primary side winding component L1 of transformer is connected with electrode input end, primary side winding component L1 Different name end be connected with the drain electrode of switching switch 4512, the Same Name of Ends of the vice-side winding component L2 of transformer and power module it is whole The input terminal for flowing input circuit (being not shown in Figure 14 E) is connected；

The anode of first diode 4514, first diode 4514 is connected with the different name end of vice-side winding component L2, and first The cathode of diode 4514 is connected with the input terminal of the rectification input circuit (being not shown in Figure 14 E) of power module；

The first end of first capacitor 4513, first capacitor 4513 is connected with the Same Name of Ends of vice-side winding component L2, the first electricity The second end of appearance 4513 is connected with the input terminal of the cathode of first diode 4514 and sampling module 4518；

The output end of sampling module 4518 is connected with the input terminal of chip control module 5511.

Illustratively, sampling module 4518 can acquire the voltage of transformer secondary winding assembly L2, the point sample feedback of sampling Pass through chip if the voltage for feeding back to chip control module 5511 is more than the threshold value of setting to chip control module 5511 Control module 5511 adjusts the switching frequency for the switching switch 4512 being electrically connected with primary side winding component L1.And then control secondary side The voltage of output, to realize the purpose of open-circuit-protection.Figure 14 T is the electricity of the auxiliary power module of an embodiment of the present invention Road schematic diagram.On the basis of the present embodiment auxiliary power module shown in Figure 14 S, chip control module 5511 is optimized for wrapping It includes: power Vcc, chip 5512, the second capacitor 5517, first resistor 5516, second resistance 5518,5513 and of the second diode 3rd resistor 5519, chip 5512 include discharge end (DIS), triggering end (TRIG), power end (VCC) and output end (OUT), Wherein,

Discharge end (DIS) is connected with the first end of first resistor 5516, and the of triggering end (TRIG) and first resistor 5516 Two ends, the first end of second resistance 5518, the first end of the first end of 3rd resistor 5519 and the second capacitor 5517 are connected, Power end (VCC) is connected with the second end of second resistance 5518 and power Vcc, the second end of 3rd resistor 5519 and the two or two The cathode of pole pipe 5513 is connected, and the anode of the second diode 5513 is connected with the output end of sampling module 4518, the second capacitor 5517 second end ground connection；

Sampling module 4518 includes: tertiary winding component L3, third diode 4515, third capacitor 4516 and the 4th electricity Resistance 4517, wherein the anode of third diode 4515 is connected with the different name end of tertiary winding component L3；Third capacitor 4516 First end is connected with the first end of the Same Name of Ends of tertiary winding component L3 and resistance, the second end of third capacitor 4516 and the The input terminal of the cathode of three diodes 4515, the second end of the 4th resistance and chip control module 5511 is connected.

In above scheme, optionally, chip control module 5511, further includes: third capacitor 5514 and the 4th capacitor 5515, chip 5512 further includes reset terminal (14RT) and control terminal (CV), wherein

Reset terminal (14RT) is grounded by third capacitor 5514, and control terminal (CV) is grounded by the 4th capacitor 5515.

Figure 14 T is please referred to, in the present embodiment, auxiliary power module 4510 includes transformer, sampling module 4518, chip The energy-storage units 4511 of control module 5511 and offer voltage vcc.In auxiliary power module 4510, from the point of view of Figure 14 J that arranges in pairs or groups, Transformer includes primary side winding component L1, vice-side winding component L2.Vice-side winding one end component L2 is electrically connected switch unit 2730 are electrically connected one end (input terminal of rectification circuit 510) of LED straight lamp 500 in turn, and vice-side winding component L2's is another End is electrically connected the other end of LED straight lamp 500.Sampling module 4518 includes winding L3, winding L3 and vice-side winding component L2 is wrapped in secondary side；The voltage of vice-side winding component L2 is sampled by winding L3, if the voltage of sampling is more than the threshold value of setting When, chip control module 5511 is fed back to, is adjusted by chip control module 5511 and is cut with what primary side winding component L1 was electrically connected Change the switching frequency of switch 4512.And then the voltage of secondary side output is controlled, to realize the purpose of open-circuit-protection.

Specifically, the transformer has primary side side unit, secondary side unit, which includes energy storage list Member 4511, primary side winding component L1 and switching switch 4512.The anode of energy-storage units 4511 is electrically connected primary side winding component L1 Same Name of Ends (that is, dotted end), and the cathode of energy-storage units 4511 is electrically connected to ground terminal.Primary side winding component L1's is different Name end is electrically connected to the drain electrode of switching switch 4512 (by taking MOS as an example).The grid of switching switch 4512 is electrically connected to chip Control module 5511, and the source electrode for switching switch 4512 is connected to ground terminal.Secondary side unit includes vice-side winding component L2, diode 4515 and first capacitor 4513.The different name end of vice-side winding component L2 is electrically connected first diode 4514 Anode, the Same Name of Ends of vice-side winding component L2 are electrically connected one end of first capacitor 4513.The cathode electricity of first diode 4514 Property connection first capacitor 4513 the other end.The both ends of first capacitor 4513 constitute auxiliary power output end V1, and V2 (is equivalent to figure The both ends of auxiliary power module 2810 in 14P or the both ends of the auxiliary power module 2910 in Figure 14 Q, 14R).

Sampling module 4518 includes tertiary winding component L3, diode 4515, capacitor 4516 and resistance 4517.Third around The different name end of group component L3 is electrically connected the anode of diode 4515, and the Same Name of Ends of tertiary winding component L3 is electrically connected capacitor 4516 with one end of resistance 4517.The cathode of diode 4515 is electrically connected the other end (the i.e. A of capacitor 4516 and resistance 4517 End).Capacitor 4516 and resistance 4517 pass through the end A electric connection chip control module 5511.

Chip control module 5511 includes chip 5512, the second diode 5513, third capacitor 5514, the 4th capacitor 5515, first resistor 5516, the second capacitor 5517, second resistance 5518 and 3rd resistor 5519.The ground terminal of chip 5512 (GND) it is grounded；The output end (OUT) of chip 5512 is electrically connected the grid of switching switch 4512；The triggering end of chip 5512 (TRIG) it is electrically connected one end (end B) of first resistor 5516, the discharge end (DIS) of chip 5512 is electrically connected first resistor 5516 other end；Third capacitor 5514 and the is electrically connected in the reset terminal (RST) of chip 5512 and the end control terminal (CV) It is grounded after four capacitors 5515；After the discharge end (DIS) of chip 5512 is electrically connected the second capacitor 5517 via first resistor 5516 Ground connection.The feeder ear (end VCC) of chip 5512 receives voltage vcc and is electrically connected one end of second resistance 5518；Second resistance 5518 other end is electrically connected the end B.The anode of second diode 5513 is electrically connected the end A, the cathode of the second diode 5513 It is electrically connected one end of 3rd resistor 5519, the other end of 3rd resistor 5519 is electrically connected the end B.

Next description, the movement of above-described embodiment；If auxiliary power module 4510 works in normal condition, at this moment assist Output voltage between the output end V1m3V2 of power module 4510 is lower, usually less than certain value (if being lower than 100V, in this implementation, Voltage 60V~80V between V1, V2).At this moment the sampling voltage-to-ground of the A point in sampling module 4518 is low, in 3rd resistor 5519 Flow through small electric current (negligible).If auxiliary power module 4510 is abnormal, the at this moment node V1 of auxiliary power module 4510 Voltage between V2 is higher (as more than 300V), and at this moment the sampled voltage of the A point in sampling module 4518 is high, 3rd resistor Biggish electric current is flowed through on 5519；Make the discharge time of the second capacitor 5517 elongated due to flowing through the biggish electric current, but the The charging time of two capacitors 5517 is unchanged；It is equivalent to the duty ratio of adjustment switch；And then make the deadline for switching switch 4512 Extend.For the outlet side of transformer, output energy becomes smaller, and output voltage no longer increases, to reach open-circuit-protection Purpose.

In above scheme, the triggering end (TRIG) of chip 5512 is electrically connected 5516 branch of first resistor and then is electrically connected The end DIS is triggered at the end discharge end DIS when the voltage at the end B is between 1/3Vcc~2/3Vcc.If auxiliary power module 4510 works 1/3Vcc can be less than in the voltage of normal condition (threshold value that the voltage exported is less than setting), the end A；If auxiliary power module When 4510 exception, the voltage of A point can meet or exceed 1/2Vcc.

In above scheme, when auxiliary power module 4510 is in normal condition, when the end DIS of 5512 chip of chip is triggered (according to its scheduled logic) regular picture；(such as Figure 14 V is that auxiliary power module 4510 is in just to its waveform as shown in Figure 14 V The timing diagram of the charge and discharge of the end DIS and output end OUT when normal state in chip), the triggering end DIS (and being in discharge regime), OUT terminal exports low level, does not trigger DIS (i.e. charging stage), and OUT terminal exports high level, the high/low electricity exported by OUT terminal The conduction and cut-off of flat control switching switch 4512.Its waveform such as Figure 14 W when auxiliary power module 4510 is at exception It is shown that (such as Figure 14 W is the timing of the charge and discharge of the end DIS and output end in the chip when in an abnormal state of auxiliary power module 4510 Figure)；Can be seen that no matter whether auxiliary power module 4510 is in normal condition, 5512 end non-flip chip DIS of chip from timing Touching (i.e. the second capacitor 5517 charge required time consistency), when in abnormal, due to have electric current through the end B flow into the end DIS this Sample is equivalent to the discharge time for extending the second capacitor 5517), output energy in this way becomes smaller, and output voltage no longer increases, thus Open-circuit-protection is achieved the purpose that.

In above scheme, chip control module selects the chip (such as 555 timing chips) of adjusting function when having；In turn Control the deadline of MOS4512.Above scheme only needs simple resistance, capacitor, time-lag action can be realized.Without complexity Control algolithm.The voltage range of VCC is between 4.5V~16V in above scheme.

The open-circuit voltage of auxiliary power module 4510 is made to be limited to certain value or less (such as 300V by above-mentioned scheme Hereinafter, specific value, which can pass through, chooses suitable parameter decision).

It should be noted that in above scheme, the electronic component shown in circuit topology, as resistance, capacitor, diode, MOS switch etc. is the isoboles of the component, can be formed by connecting according to certain rules by multiple in actual use.

Figure 14 U is the circuit diagram of the auxiliary power module of another embodiment of the utility model.The present embodiment is in Figure 14 E Shown on the basis of auxiliary power module, chip control module 5511 is optimized for include: power Vcc, chip 5512, second Capacitor 5517, first resistor 5516 and second resistance 5518, chip 5512 include discharge end (DIS), triggering end (TRIG) power supply Hold (VCC) and output end (OUT), wherein

Discharge end (DIS) is connected with the first end of first resistor 5516, and the of triggering end (TRIG) and first resistor 5516 The first end at two ends, the first end of second resistance 5518 and the second capacitor 5517 is connected, power end (VCC) second resistance 5518 second end and power Vcc is connected, the second end ground connection of the second capacitor 5517；

Sampling module 4518 includes: photoelectrical coupler 6513, the 5th resistance 6511 and pincers pressure component 6512, wherein

Photoelectrical coupler 6513 includes photodiode and triode, anode and the first capacitor 4513 of photodiode Second end is connected, and the cathode of photodiode is connected with the first end of the 5th resistance 6511, the triode of photoelectrical coupler 6513 Collector be electrically connected with the second end of second resistance 5518, the emitter and second resistance of the triode of photoelectrical coupler 6513 5518 first end electrical connection；The second end of 5th resistance 6511 is electrically connected with the first end of pincers pressure component 6512, pincers pressure component 6512 second end is electrically connected with the first end of first capacitor 4513.

Figure 14 U is please referred to, Figure 14 U embodiment is with the difference of embodiment shown in Figure 14 T, the sampling module of the present embodiment It is to be implemented using optocoupler sensor.Auxiliary power module 6510 include transformer, sampling module, chip control module 5511 with And provide the energy-storage units 4511 of voltage vcc.

Transformer includes primary side winding component L1 and vice-side winding component L2.Primary side winding component L1 and switching switch 4512 configuration is identical as previous embodiment.The Same Name of Ends of vice-side winding component L2 is electrically connected the sun of first diode 4514 Pole, and the different name end of vice-side winding component L2 is electrically connected one end of first capacitor 4513.The cathode of first diode 4514 It is electrically connected the other end of first capacitor 4513.The both ends of first capacitor 4513 are auxiliary power output end V1 and V2.

Sampling module includes photoelectrical coupler 6513, and the anode-side of the photodiode in photoelectrical coupler 6513 is electrical The cathode of first diode 4514 and one end of first capacitor 4513 are connected, the cathode side of photodiode is electrically connected resistance 6511 side, the other side of resistance 6511 are electrically connected one end of pincers pressure component 6512, the other end electricity of pincers pressure component 6512 Property connection first capacitor 4513 the other end.The collector of triode in photoelectrical coupler 6513, emitter-base bandgap grading are electrically connected The both ends of two resistance 5518.

Chip control module 5511 includes chip 5512, third capacitor 5514, the 4th capacitor 5515, first resistor 5516, the second capacitor 5517 and second resistance 5518.Feeder ear (end VCC) the electrical property VCC and photoelectrical coupler of chip 5512 The collector of triode in 6513；One end of discharge end (end DIS) the electric connection first resistor 5516 of chip 5512, first The other end of resistance 5516 is electrically connected the collector of the triode in photoelectrical coupler 6513；Discharge end (the THRS of chip 5512 End) be electrically connected 9 branches other end electrical property photoelectrical coupler 6513 in triode emitter terminal and through the second capacitor 5517 electrical grounds；Ground terminal (end GND) electrical ground of chip 5512；The reset terminal (RST) of chip 5512 is through third capacitor 5514 electrical grounds；The control terminal (CV) of chip 5512 is through 5515 electrical ground of the 4th capacitor；The triggering end of chip 5512 (TRIG) it is electrically connected discharge end (end THRS)；The output end (OUT) of chip 5512 is electrically connected the grid of switching switch 4512.

Next description, the movement of above-described embodiment, in normal work, auxiliary power output end (V1, V2) output Voltage flows through the electric current I1 very little of resistance 6511 lower than the clamp voltage of pincers pressure component 6512, can be ignored；Flow through photoelectrical coupler The electric current I2 very little of transistor collector and emitter in 6513.

If load open circuit, the voltage of auxiliary power output end (V1, V2) output rises, more than the threshold value of pincers pressure component 6512 When, pincers pressure component 6512 is connected, and the electric current for flowing through current-limiting resistance 6511 in this way increases I1, so that 6513 diode of photoelectrical coupler It shines, flows through the electric current I2 proportional increase of the transistor collector and emitter in photoelectrical coupler 6513, electric current I2 is mended The discharge current that the second capacitor 5517 passes through first resistor 5516 has been repaid, so that the discharge time of the second capacitor 5517 lengthens, this Sample increases switch-off time (i.e. duty cycle of switching becomes smaller) accordingly, and output energy becomes smaller, and secondary side exports energy phase That answers becomes smaller, and output voltage no longer increases, to realize open-circuit-protection.

In above scheme, pincers pressure component 6512 is varistor, TVS (Transient Voltage Suppressor bis- Pole pipe, also known as Transient Suppression Diode), zener diode.The activation threshold value of pincers pressure component 6512 chooses 100V~400V, compared with Good selection 150V~350V.300V is chosen in the present embodiment.

In above scheme, its main metering function of resistance 6511, resistance value chooses 20K ohm~1M ohm, preferably selects 20K ohm~500KM ohm are taken, 50K ohm are chosen in the present embodiment.In above scheme, its main current limliting of second resistance 5518 Effect, resistance value choose 1K ohm~100K ohm, preferably choose 5K ohm~50KM ohm, 6K is chosen in the present embodiment Ohm.In above scheme, the second capacitor 5517, capacitance chooses 1nF~1000nF, preferably selection 1nF~100nF, this reality It applies and chooses 2.2nF in example.In above scheme, the 4th capacitor 5515, capacitance chooses 1nF~1pF, and preferably selection 5nF~ 50nF chooses 10nF in the present embodiment.In above scheme, first capacitor 4513, capacitance chooses 1uF~100uF, preferably selects 1uF~10uF is taken, chooses 4.7uF in the present embodiment.

In Figure 14 T and Figure 14 U scheme, the energy-storage units 4511 for including in auxiliary power module 4510/6510 can be battery Or super capacitor.In the above scheme, the DC power supply of auxiliary power module 4510/6510 can pass through BMS (battery management system System) it is managed, it charges under general lighting mode.Or BMS is directly omitted, in general lighting mode to DC power supply It charges.It is charged with lesser electric current (electric current no more than 300mA) by choosing suitable component parameter.

Using the auxiliary power module 4510/6510 of Figure 14 T or 14U embodiment, circuit topology is simple, and without dedicated Integrated chip.Open-circuit-protection is realized using less component.Improve the reliability of ballast.In addition the emergency ballast of the program Device, circuit topology are output isolated form.Reduce the hidden danger of leakage current.

Generally speaking, the principle of above-mentioned Figure 14 T and Figure 14 U scheme is, utilizes detection module, the voltage of sampled output (electric current) information, by extending the discharge time at control chip discharge end, extends if the information of detection is more than the threshold value of setting The switch-off time, come adjust switch duty ratio (for controlling chip, the operating voltage of discharge end (DIS, THRS) Charging time between 1/3VCC~2/3VCC, second capacitor 5517 that works is unchanged, and discharge time is elongated), to the defeated of transformer Out for side, output energy becomes smaller, and output voltage is not increasing, to achieve the purpose that open-circuit-protection.

As shown in Figure 14 V and Figure 14 W, high level is initially exported to control the OUT of chip, the timing with discharge end triggering Figure.It is the timing diagram that auxiliary power module works in normal condition such as Figure 14 O；Such as Figure 14 P, work for auxiliary power module Timing in abnormal (such as: load open circuit) state.The OUT terminal of control chip initially exports high level, does not at this moment trigger electric discharge It holds (charging of the second capacitor 5517)；When triggering discharge end (electric discharge of the second capacitor 5517), OUT terminal initially exports low level.Pass through The signal of OUT terminal controls 4512 conduction and cut-off of MOS switch.

Module referring to Figure 15, for according to the power module of the LED straight lamp of the 9th preferred embodiment of the utility model Application circuit block schematic diagram.Compared to Fig. 8 C illustrated embodiment, the LED straight lamp of the present embodiment includes the first rectification circuit 510, filter circuit 520 and more increase installation detecting module 2520, wherein power module also may include LED illumination module 530 Part component.Detecting module 2520 is installed and couples the first rectification circuit 510 through the first installation sense terminal 2521, and through second Sense terminal 2522 is installed and couples filter circuit 520.The installation detecting of detecting module 2520 flows through the first installation sense terminal 2521 and the The signal of two installation sense terminals 2522, and decide whether that ending external drive signal flows through LED straight lamp according to detecting result.When When LED straight lamp is not yet formally installed on lamp holder, installation detecting module 2520 can detect lesser current signal and judge signal Excessively high impedance is flowed through, installing the cut-off of detecting module 2520 at this time stops operation LED straight lamp.If it is not, installation detecting module 2520 judge that LED straight lamp is correctly installed on lamp holder, and installation detecting module 2520 maintains conducting to grasp LED straight lamp normally Make.That is, when the electric current for flowing through the first installation sense terminal and the second installation sense terminal is greater than or equal to an installation When setting electric current (or a current value), installation detecting module judges that LED straight lamp is correctly installed on lamp holder and is connected, and makes LED Straight lamp operates in an on state；When the electric current for flowing through the first installation sense terminal and the second installation sense terminal When lower than described set-mounted electric current (or current value), installation detecting module judges that LED straight lamp is not installed on lamp holder correctly And end, make LED straight lamp enter a not on-state or enable the electric current on the electric power loop of LED straight lamp limited to Less than 5mA (being then 5MIU based on validation criteria).In other words, installation detecting module 2520 judges conducting based on the impedance of detecting Or cut-off, make LED straight lamp operate in conducting or enter be not turned on/limit current status.Whereby, can exist to avoid user The problem of getting an electric shock when LED straight lamp is not yet correctly installed on lamp holder because accidentally touching LED straight lamp current-carrying part.

In another exemplary embodiment, because the impedance of human body will lead on electric power loop when human contact's fluorescent tube Equivalent impedance changes, and installation detecting module 2520 can judge whether user contacts by the voltage change on detecting electric power loop Above-mentioned electroshock-proof function equally may be implemented in fluorescent tube.In other words, in the utility model embodiment, detecting module is installed 2520 can judge whether fluorescent tube is properly installed and whether is user through detecting electric signal (including voltage or electric current) The current-carrying part of fluorescent tube is accidentally touched in the case where fluorescent tube is not installed correctly.Further, compared to general LED power mould Block, the power module configured with installation detecting module 2520 inherently have the effect for preventing electric shock, therefore need not be electric as As source circuit design, safety capacitor is set (that is, X is electric in the input terminal (that is, between firewire and neutral conductor) of rectification circuit 510 Hold).From the perspective of equivalent circuit, that is, indicate in the power module configured with installation detecting module 2520, rectified current Equivalent capacitance value between the input terminal on road 510 can be, for example, less than 47nF.In this embodiment, the electric power loop refers to straight Current path in spot, that is, pass through power circuit and circuit from the pin for receiving the first polarity/phase power supply (such as L line) Element reaches LED module, then is formed by road via LED module to the pin for receiving the second polarity/phase power supply (such as N line) Diameter.Arrange in pairs or groups both-end into electricity lamp tube structure from the point of view of, the electric power loop is formed in the pin on the lamp cap of fluorescent tube opposite sides Between, rather than between two pins of ipsilateral lamp cap.

6A referring to Figure 1, for according to the circuit diagram of the installation detecting module of the first preferred embodiment of the utility model. Installing detecting module includes switching circuit 2580, detection pulse (pulse) generation module 2540, testing result latch cicuit 2560 And detection decision circuit 2570.Detect decision circuit 2570 (through switch coupling end 2581 and switching circuit 2580) coupling the One installation sense terminal 2521 and coupling the second installation sense terminal 2522, with 1 detecting the first installation sense terminal 2521 and second Signal between sense terminal 2522 is installed.It detects decision circuit 2570 and couples testing result latch through testing result end 2571 simultaneously Circuit 2560 is sent to testing result latch cicuit 2560 will test consequential signal through testing result end 2571.Detect pulse Module 2540 occurs, testing result latch cicuit 2560 is coupled by pulse signal output end 2541, and generates pulse signal with logical Know that testing result latch cicuit 2560 latches the opportunity point of testing result.Testing result latch cicuit 2560 is believed according to testing result Number (or testing result signal and pulse signal) latches testing result, latches end 2561 through testing result and couples switching circuit 2580, will test result transmission or be reflected into switching circuit 2580.According to testing result, decision makes first to switching circuit 2580 On or off between sense terminal 2521 and the second installation sense terminal 2522 is installed.

6B referring to Figure 1, the circuit for the detection pulse generating module according to the first preferred embodiment of the utility model show It is intended to.Detect pulse generating module 2640 include capacitor 2642 (or first capacitor device), 2645 (or second capacitors) and 2646 (or third capacitors), resistance 2643 (or first resistor device), 2647 (or second resistors) and 2648 (or 3rd resistor device), buffer (buffer) 2644 (or first buffer) and 2651 (or second buffers), reverser 2650, diode 2649 (or being first diode) and or door (OR gate) 2652 (or being first or door).It is using Or in operation, capacitor 2642 and resistance 2643 are series at a driving voltage (such as being known as VCC, and often ordered as a high levle) And between reference potential (herein using the current potential on ground as embodiment), tie point couples the input terminal of buffer 2644.Resistance 2647 are coupled to the input terminal of a driving voltage (can be described as VCC) and reverser 2650.Resistance 2648 is coupled to buffer 2651 Input terminal and a reference potential (herein using the current potential on ground as embodiment) between.The positive ending grounding of diode, negative terminal also coupling Connect the input terminal of buffer 2651.One end of capacitor 2645 and 2646 one end couple the output end of buffer 2644 jointly, electricity The other end of appearance 2645 connects the input terminal of reverser 2650, and the other end of capacitor 2646 then couples the input of buffer 2651 End.The output end coupling of the output end and buffer 2651 of reverser 2650 or the input terminal of door 2652.It is noted that at this In this specification of case, current potential its " high levle " and " low level " be relative to another current potential in circuit or certain reference potential and Speech, and again can be respectively as " logic high levle " and " logic low level ".

Signal sequence depicted in beneath collocation Figure 23 A illustrates that wherein Figure 23 A is according to the utility model first together The signal sequence schematic diagram of the power module of preferred embodiment.When one end lamp cap of LED straight lamp is inserted into lamp holder and other end lamp When the both-end lamp cap of human body or LED straight lamp in electrical contact is inserted into lamp holder (time point ts), LED straight lamp is powered.At this point, Installation detecting module enters detection-phase DTS.The tie point level of capacitor 2642 and resistance 2643 is high (equal to driving at the beginning Voltage VCC), it is gradually reduced at any time after, is finally down to zero.The input terminal coupling capacitance 2642 and resistance of buffer 2644 2643 tie point, therefore high levle signal is exported at the beginning, and is dropped in the tie point level of capacitor 2642 and resistance 2643 When judging level to low logic, low level signal is changed into.It is, buffer 2644 generates an input pulse signal, Zhi Houchi It is continuous to maintain low level (stopping exporting the input pulse signal).The pulse width of the input pulse signal is equal to one (initially Setting) time cycle, and the time cycle is determined by the capacitance of capacitor 2642 and the resistance value of resistance 2643.

Then illustrate that buffer 2644 generates the operation of the set time period of pulse signal.Due to capacitor 2645 and resistance 2647 one end is equal to driving voltage VCC, therefore the connecting pin of capacitor 2645 and resistance 2647 is also high levle.In addition, electric One end ground connection of resistance 2648, one end of capacitor 2646 receive the pulse signal of buffer 2644.So capacitor 2646 and resistance 2648 connecting pin in high levle at the beginning, then at any time gradually on be down to zero and (store and be equal or close to time capacitor The voltage of driving voltage VCC).Therefore, reverser 2650 exports low level signal, and buffer 2651 then exports high levle letter Number, and make or door 2652 in pulse signal output end 2541 export high levle signal (the first pulse signal DP1).At this point, detection As a result signal and pulse signal latch testing result to latch cicuit 2560 for the first time according to testing result.When capacitor 2646 and resistance When the level of 2648 connecting pin is down to low logic and judges level, buffer 2651 switchs to export low level signal, and makes or door 2652 export low level signal (stopping the first pulse signal DP1 of output) in pulse signal output end 2541.Or 2652 institute of door is defeated The pulsewidth of pulse signal out is determined by the capacitance of capacitor 2646 and the resistance value of resistance 2648.

Then, since capacitor 2646 stores the voltage close to driving voltage VCC, in buffer 2644 output by High levle switchs to the moment of low level, and capacitor 2646 and the level of the connecting pin of resistance 2648 can be lower than zero, and via diode 2649 pairs of capacitor fast chargings and so that the level of connecting pin is retracted zero.Therefore, buffer 2651 still maintains output low level letter Number.

On the other hand, switch to the moment of low level by high levle in the output of buffer 2644, one end of capacitor 2645 Level reduces by zero by driving voltage VCC moment, makes the connecting pin low level of capacitor 2645 Yu resistance 2647.Reverser 2650 Output signal switchs to high levle, and make or door output high levle (the second pulse signal DP2).At this point, testing result latch cicuit 2560 signal and pulse signal latch testing result for the second time according to testing result.Then, resistance 2647 charges to capacitor 2645, Be gradually increasing the level of the connecting pin of capacitor 2645 and resistance 2647 at any time and to equal than driving voltage VCC.When appearance 2645 When rising supreme logic judgment level with the level of the connecting pin of resistance 2647, reverser 2650 exports low level once again, and makes Or door 2652 stops the second pulse signal DP2 of output.The pulsewidth of second pulse signal by capacitor 2645 capacitance and resistance 2647 Resistance value determined.

As described above, detection pulse generating module 2640 can generate the pulse signal-the of two high levles in detection-phase One pulse signal DP1 and the second pulse signal DP2, is exported by pulse signal output end 2541, and the first pulse signal and A setting time interval TIV is spaced between two pulse signals, setting time interval TIV is mainly by the capacitance and electricity of capacitor 2642 2643 resistance value is hindered to determine.

And entering operational phase DRS after detection-phase DTS, detection pulse generating module 2640 no longer generates pulse signal DP1/DP2, and maintaining pulse signal output end 2541 is low level.6C referring to Figure 1 is preferable according to the utility model first The circuit diagram of the detection decision circuit of embodiment.Detection decision circuit 2670 includes that (or first compare comparator 2671 Device) and resistance 2672 (or the 5th resistor).The reverse side of comparator 2671, which receives, refers to level signal Vref, noninverting End is through the ground connection of resistance 2672 and while coupling switch coupling end 2581.Please referring also to Figure 15, by the first installation sense terminal 2521 The signal for flowing into switching circuit 2580 can flow through resistance 2672 via the switch coupling output of end 2581.When flowing through resistance 2672 Electric current it is excessive (that is, be greater than or equal to set-mounted electric current, such as: so that level on resistance 2672 is higher than ginseng (it can correspond to two lamp cap when examining the level of level signal Vref and be correctly inserted into the lamp holder), comparator 2671 generates Gao Zhun The testing result signal of position is simultaneously exported by testing result end 2571.For example, comparing when LED straight lamp is correctly installed on lamp holder Device 2671 can export the testing result signal Sdr of high levle in testing result end 2571.When the electric current for flowing through resistance 2672 is insufficient The level on resistance 2672 is set (it is correct to can correspond to only one of which lamp cap when being higher than the level with reference to level signal Vref It is inserted into the lamp holder), comparator 2671 generates the testing result signal Sdr of low level and is exported by testing result end 2571.Example Such as, when LED straight lamp is not correctly installed on lamp holder or when one end is installed on lamp holder and the other end through human body grounding, electric current Comparator 2671 is set to export the testing result signal Sdr of low level in testing result end 2571 for too small.

6D referring to Figure 1, the circuit for the testing result latch cicuit according to the first preferred embodiment of the utility model show It is intended to.Testing result latch cicuit 2660 includes D flip-flop (D Flip-flop) 2661 (or first D flip-flop), electricity Hinder 2662 (or the 4th resistors) and or door 2663 (or second or door).The clock input of D flip-flop 2661 (CLK) testing result end 2571 is coupled, input terminal D couples driving voltage VCC.When testing result end 2571 exports low level When testing result signal Sdr, D flip-flop 2661 exports low level signal in output end Q；When testing result end 2571 exports height When the testing result signal of level, D flip-flop 2661 exports high levle signal in output end Q.Resistance 2662 is coupled to D type Between the output end Q and reference potential (such as the current potential on ground) of trigger 2661.When or 2663 return pulse signal output end of door The Gao Zhun that the first pulse signal DP1 or the second pulse signal DP2 or D flip-flop 2661 of 2541 outputs are exported in output end Q When the signal of position, the testing result latch signal that end 2561 exports high levle is latched in testing result.Due to detecting pulse generation mould Block 2640 only when detection-phase DTS exports the first pulse signal DP1 or the second pulse signal DP2, is dominated or door 2663 exports High levle testing result latch signal, and remaining time (including the operational phase DRS after detection-phase DTS) is triggered by D type It is high levle or low level that device 2661, which dominates testing result latch signal,.Therefore, when testing result end 2571 does not occur excessively high standard When the testing result signal Sdr of position, D flip-flop 2661 maintains low level signal in output end Q, and testing result is made to latch end 2561 also maintain the testing result latch signal of low level in operational phase DRS.Conversely, when testing result end 2571 once goes out When now crossing the testing result signal Sdr of high levle, D flip-flop 2661 can latch and maintain high levle signal in output end Q.Such as This, testing result latches the testing result latch signal that high levle is also maintained when end 2561 enters operational phase DRS.

6E referring to Figure 1, for according to the circuit diagram of the switching circuit of the first preferred embodiment of the utility model.Switch Circuit 2680 may include a transistor (transistor), such as bipolar junction transistors 2681 (or first crystal Pipe) it is used as a power transistor (power transistor).Power transistor can handle high current and power, particularly by with In switching circuit.Collector coupling the first installation sense terminal 2521 of bipolar junction transistors 2681, base stage coupling detection knot Fruit latches end 2561, and emitter-base bandgap grading switch couples end 2581.When detection pulse generating module 2640 generates the first pulse signal DP1 Or when the second pulse signal DP2, of short duration conducting examines detection decision circuit 2670 by bipolar junction transistors 2681 It surveys, to determine testing result latch signal as high levle or low level.When testing result latch cicuit 2660 is locked in testing result When depositing the testing result latch signal of 2561 output high levle of end, indicate that LED straight lamp has been properly installed on lamp holder, because This bipolar junction transistors 2681 makes conducting between the first installation sense terminal 2521 and the second installation sense terminal 2522 It is connected in (that is, turn-on power circuit).The driving circuit in power module (not being painted) can be based on the voltage on electric power loop at this time And be activated and start operation, and then generation lights control signal Slc and carrys out power switched switch (not being painted), so that driving current It can be generated and light LED module.On the contrary, when testing result latch cicuit 2660 in testing result latch end 2561 export it is low When the testing result latch signal of level, bipolar junction transistors 2681 cut-off is made the first installation sense terminal 2521 and End between second installation sense terminal 2522.The driving circuit in power module will not be activated at this time, therefore light control letter Number Slc will not be generated.

Since external drive signal Sed is AC signal, when being detected in order to avoid detection decision circuit 2670, external drive The level of signal just causes detecting mistake in zero crossings.Therefore, detection pulse generating module 2640 generates the first pulse Signals DP 1 and the second pulse signal DP2 are so that detection decision circuit 2670 detects twice, to avoid external drive when single detection The level of signal is just the zero crossings the problem of.Preferably, the generation of the first pulse signal DP1 and the second pulse signal DP2 Time difference is not the integer multiple for the cycle T half for being the external drive signal Sed, i.e., and external drive described in non-corresponding is believed The integer multiple of the 180 degree phase difference of number Sed.In this way, one of the first pulse signal DP1 and the second pulse signal DP2 are produced When raw, if misfortune external drive signal Sed can avoid external drive signal Sed in zero crossings, another generation also zero Near point.

The generation time of above-mentioned first pulse signal and the second pulse signal is poor, i.e., setting time interval TIV can be with public affairs Formula is expressed as follows:

TIV=(X+Y) (T/2)

Wherein, T is the period of external drive signal, and X is the integer more than or equal to zero, 0 < Y < 1.

The preferable range of Y is between 0.05-0.95, between more preferably 0.15-0.85.

Furthermore when entering detection-phase DTS in order to avoid installation detecting module, the level of driving voltage VCC is too low to be made It is begun to ramp up at the circuit logic misjudgment of installation detecting module.It may be set in drive in the generation of the first pulse signal DP1 Dynamic voltage VCC is reached or higher than predetermined level when generates, and detection determines electricity after so that driving voltage VCC is reached enough levels Road 2670 just carries out, to avoid the circuit logic misjudgment of level installation detecting module caused by insufficient.

According to the above description, when LED straight lamp one end lamp cap insertion lamp holder and other end lamp cap be suspension joint or electricity Property contact human body when, make the testing result signal Sdr for detecting decision circuit output low level because impedance is big.Testing result latches Circuit latches into the testing result signal Sdr of low level according to the pulse signal DP1/DP2 of detection pulse generating module The testing result latch signal of low level, and testing result is also maintained when operational phase DRS.In this way, switching circuit can be made to tie up It holds cut-off and avoids continuing energization.It is possible so also to can avoid human electric shock, so as to meet the requirement of safety.And work as When the both ends lamp cap of LED straight lamp is correctly inserted into lamp holder (time point td), make to examine because the impedance of LED straight lamp circuit itself is small Survey the testing result signal Sdr of decision circuit output high levle.Testing result latch cicuit is according to detection pulse generating module Pulse signal DP1/DP2 is latched into the testing result latch signal of high levle to the testing result signal Sdr of high levle, And testing result is also maintained when operational phase DRS.In this way, switching circuit can be made to maintain conducting and persistently be powered, make LED straight tube Lamp normal operating when operational phase DRS.

In other words, in some embodiments, the lamp cap described in one end of the LED straight lamp is inserted into the lamp holder and another When lamp cap described in one end is suspension joint or human body in electrical contact, the testing result letter of the detection decision circuit input low level Number Sdr is to the testing result latch cicuit, and then the detection pulse generating module exports a low level signal to the inspection Result latch cicuit is surveyed, makes a testing result latch signal of the testing result latch cicuit output low level so that described open Powered-down road cut-off, wherein the cut-off of the switching circuit makes to cut between the first installation sense terminal and the second installation sense terminal Only, even if also the LED straight lamp enters a not on-state.

And in some embodiments, when two lamp cap of the LED straight lamp is correctly inserted into the lamp holder, the inspection The testing result signal of decision circuit input high levle is surveyed to the testing result latch cicuit, locks the testing result A testing result latch signal of circuit output high levle is deposited so that the switching circuit is connected, wherein the switching circuit is led It is logical to make to be connected between the first installation sense terminal and the second installation sense terminal, even if also the LED straight lamp operates in one On state.

According to above-mentioned, for the process of user's installation, the LED straight lamp described in the present embodiment is mounted be powered after (energization either correctly installed or the energization installed incorrectly), all due to the installation detecting module inside LED straight lamp It can carry out pulse generation movement first to detect the installation condition of LED straight lamp, and be properly installed in confirmation LED straight lamp Afterwards just can turn-on power circuit to provide be enough to light the driving current of LED module, therefore be at least generated in the first subpulse Before, LED straight lamp not can be lit (that is, electric power loop will not be switched on or electric power loop on electric current limited It is being less than 5mA/MIU).In practical applications, LED straight lamp generates the required time to the first subpulse after being mounted energization 100 milliseconds (ms) can be generally greater than or equal to.In other words, the LED straight lamp of the present embodiment at least can be after installation is powered It not can be lit in 100ms.In addition, in one embodiment, since installation detecting module can be properly installed it in LED straight lamp Before continuously send out pulse to detect installation condition, if therefore LED straight lamp it is non-lit up after a pulse generates (that is, not by Determine correct installation), then LED straight lamp can at least be spaced setting time interval TIV above-mentioned just and can be possible to and be lit (that is, After next pulse generates).In other words, if 100ms of the LED straight lamp of the present embodiment after installation is powered is non-lit up, It will not be lit in a period of 100ms+TIV.

It is worth noting that, detection pulse generating module generate pulse signal DP1/DP2 pulsewidth 10us to 1ms it Between, effect only when LED straight lamp is powered moment, makes switching circuit that the of short duration time be connected using this pulse signal.This Sample can produce a pulse current, flows through detection decision circuit and carries out detection judgement.Because generation be the pulse of short time due to It is connected non-for a long time, Danger Electric shock risk can't be caused.Furthermore testing result latch cicuit also maintains to examine when operational phase DRS Survey as a result, no longer because circuit state change due to changes the testing result previously latched, and avoid testing result variation and caused by Problem.And detecting module (i.e. switching circuit, detection pulse generating module, testing result latch cicuit and detection judgement are installed Circuit) it is desirably integrated into chip, it can be embedded into circuit in this way, the circuit cost and body of installation detecting module can be saved Product.In one embodiment, the pulsewidth of the pulse signal DP1/DP2 can be further in 15us between 30us；In another reality It applies in example, the pulsewidth of the pulse signal DP1/DP2 can be 20us.

In addition it is attached to one to be mentioned that, although above-mentioned detection pulse generating module 2640 is to generate two pulse signals DP1 and DP2 is illustrated as example, but the detection pulse generating module 2540 of the utility model is not limited only to this.It is described Detection pulse generating module 2540 can be the circuit to generate Sing plus or can independently generate the circuit of multiple pulses. For example, in an exemplary embodiment, detection pulse generating module 2640 can only include capacitor 2642, resistance 2643 and Buffer 2644.Herein under configuration, detection pulse generating module 2640 can only generate single pulse signal DP1.In another model In example embodiment, detection pulse generating module 2640 can be further included a reset circuit (not being painted), and the reset circuit can be with After the first pulse signal and/or the second pulse signal generate, the working condition of reset circuit, so that detection pulse generation mould Block 2640 can generate the first pulse signal and/or the second pulse signal again over time.Also that is, through electricity is resetted The effect on road can make to detect pulse generating module 2640 according to the fixed or random multiple arteries and veins of setting time interval TIV generation Rush signal.

7A referring to Figure 1, for according to the circuit diagram of the installation detecting module of the second preferred embodiment of the utility model. Installing detecting module includes detection a pulse generating module 2740, a testing result latch cicuit 2760, a switching circuit 2780 And one detection decision circuit 2770.Signal sequence depicted in beneath collocation Figure 23 B illustrates that wherein Figure 23 B is root together According to the signal sequence schematic diagram of the power module of the second preferred embodiment of the utility model.Wherein, pulse generating module is detected 2740 be electrically connected testing result latch cicuits 2760, to generate include an at least pulse signal DP control signal Sc. Testing result latch cicuit 2760 is electrically connected switching circuit 2780, to receive and export detection 2740 institute of pulse generating module The control signal Sc of output.One end of LED straight lamp electric power loop is electrically connected in switching circuit 2780 and detection determines electricity Road 2770, to receive control signal Sc that testing result latch cicuit 2760 is exported and be connected during pulse signal DP, So that LED straight lamp electric power loop is connected.Switching circuit 2780, LED straight lamp is electrically connected in detection decision circuit 2770 The other end and testing result latch cicuit 2760 of electric power loop, to be connected in switching circuit 2780 with LED power circuit When, the sampled signal Ssp on electric power loop is detected to judge the installation condition of LED straight lamp and lamp holder.In other words, the present embodiment Electric power loop be used as install detecting module detection path.Wherein, detection decision circuit 2770 more will test result biography It send to testing result latch cicuit 2760 to carry out further control；In addition, detection pulse generating module 2740 is more electrically connected The time of control disabling pulse signals DP is used in the output of testing result latch cicuit 2760.Its thin portion circuit framework and entirety The explanation of circuit running will be successively described in down.

In some embodiments, detection pulse generating module 2740 generates a control via testing result latch cicuit 2760 Signal Sc, so that switching circuit 2780 operates during pulse on state.Meanwhile LED straight lamp is located at installation sense terminal Electric power loop between 2521 and 2522 can also simultaneously turn on.Decision circuit 2770 detects on electric power loop one is detected to take Sample signal, and the time point for detecting signal is latched based on the signal notice testing result latch cicuit 2760 detected.Citing For, detection decision circuit 2770 can be for example the circuit that can produce the output level to control latch circuit, wherein latch The output level of circuit can be corresponded to each other with the conduction and cut-off state of LED straight lamp.Testing result latch cicuit 2760 is according to taking Sample signal Ssp (or sampled signal Ssp and pulse signal DP) storage testing result, and will test result transmission or provide and open Powered-down road 2780.It, i.e., can be according to after switching circuit 2780 receives the testing result transmitted by testing result latch cicuit 2760 The on state between installation sense terminal 2521 and 2522 is controlled according to testing result.

7B referring to Figure 1, for according to the detection pulse generating module schematic diagram of the second preferred embodiment of the utility model.Inspection Surveying pulse generating module 2740 includes: a resistance 2742 (the 6th resistance), one end connect a driving voltage；One capacitor 2743 ( Four capacitors), one end connects the other end of resistance 2742, and the other end ground connection of capacitor 2743；One schmitt trigger 2744, tool There are an input terminal and an output end, which connects the connecting pin of resistance 2742 and capacitor 2743, the output end connecting detection As a result latch cicuit 2760；One resistance 2745 (the 7th resistance), one end connect the connecting pin of resistance 2742 and capacitor 2743；One is brilliant Body pipe 2746 (second transistor), has a base terminal, a collector terminal and an emitter-base bandgap grading end, which connects resistance 2745 The other end, emitter-base bandgap grading end ground connection；And a resistance 2747 (the 8th resistance), one end connect the base terminal of transistor 2746, and electricity The other end connecting detection result latch cicuit 2760 and switching circuit 2780 of resistance 2747.Detect pulse generating module 2740 more Comprising Zener diode 2748, there is an anode tap and a cathode terminal, which connects the other end ground connection of capacitor 2743, One end that cathode terminal connection capacitor 2743 is connect with resistance 2742.

7D referring to Figure 1, for according to the testing result latch cicuit schematic diagram of the second preferred embodiment of the utility model.Inspection Surveying result latch cicuit 2760 includes: a D flip-flop 2762 (the second D flip-flop) has a data input pin, a frequency Input terminal and an output end, the data input pin connect the driving voltage, the frequency input connecting detection decision circuit 2770； And one or door 2763 (third or door), there is a first input end, one second input terminal and an output end, the first input end The output end of schmitt trigger 2744 is connected, which connects the output end of D flip-flop 2762, and or door The other end and switching circuit 2780 of 2763 output end connection resistance 2747.

7E referring to Figure 1, for according to the switching circuit schematic diagram of the second preferred embodiment of the utility model.Switching circuit 2780 include: a transistor 2782 (third transistor), has a base terminal, a collector terminal and an emitter-base bandgap grading end, which connects It connects or the output end of door 2763, which connects the one end (such as: the first installation sense terminal 2521) in LED power circuit, should Emitter-base bandgap grading end connecting detection decision circuit 2770.Wherein, the also replaceable equivalent elements at other electronic switch of transistor 2782, Such as: MOSFET etc..

7C referring to Figure 1, for according to the detection decision circuit schematic diagram of the second preferred embodiment of the utility model.Detection is sentenced Determining circuit 2770 includes: a resistance 2774 (the 9th resistance), and one end connects the emitter-base bandgap grading end of transistor 2782, and resistance 2774 is another One end connects the other end (such as: second installation sense terminal 2522) in LED power circuit；One diode, 2775 (the two or two pole Pipe), there is an anode tap and a cathode terminal, which connects one end of resistance 2744；(second compares one comparator 2772 Device), have a first input end, one second input terminal and an output end, the first input end connection one setting signal (such as: Reference voltage Vref is 1.3V in the present embodiment, so without being limited thereto), which connects the cathode terminal of diode 2775, And the frequency input of the output end connection D flip-flop 2762 of comparator 2772；One comparator 2773 (third comparator), tool There are a first input end, one second input terminal and an output end, which connects the cathode terminal of diode 2775, this Another setting signal of two input terminals connection (such as: another reference voltage Vref is 0.3V in the present embodiment, so without being limited thereto), And the frequency input of the output end connection D flip-flop 2762 of comparator；One resistance 2776 (the tenth resistance), one end connection should Driving voltage；It is second defeated to connect the other end and the comparator 2772 of resistance 2776 for one resistance 2777 (eleventh resistor), one end Enter end, and the other end ground connection of resistance 2777；And a capacitor 2778 (the 5th capacitor), it is in parallel with resistance 2777.In certain realities It applies in example, above-mentioned diode 2775, comparator 2773, resistance 2776, resistance 2777 and capacitor 2778 can be omitted, when When diode 2775 is omitted, the second input terminal of comparator 2772 is just directly connected to one end of resistance 2774.In certain implementations In example, considered based on power factor (PF), resistance 2774 can be two resistor coupled in parallel, and equivalent resistance includes that 0.1 nurse~5 difficult to understand are difficult to understand Nurse.

It is worth noting that, the partial circuit of above-mentioned installation detecting module, which can accumulate body, is melted into an integrated circuit, Jin Erjie Save the circuit cost and volume of installation detecting module.Such as: the schmitt trigger of integration detection pulse generating module 2740 2744, testing result latch cicuit 2760 and two comparators 2772,2773 of decision circuit 2770 are detected in an integrated circuit, Right the utility model is without being limited thereto.

The beneath integrated circuit running that will just install detecting module again is illustrated.First it is noted that this is practical new The principle that type utilizes capacitance voltage not mutate；Capacitor in LED straight lamp electric power loop before electric power loop conducting, Both end voltage is zero and short-circuit condition is presented in transient response；And when electric power loop is when LED straight lamp is correctly installed on lamp holder, Its transient response current-limiting resistance is smaller and peak value of response electric current is larger, when electric power loop is not installed on lamp correctly in LED straight lamp When seat, the principles such as transient response current-limiting resistance is larger and peak value of response electric current is smaller are implemented, and make LED straight lamp Leakage current is less than 5MIU.It below will (i.e. LED straight lamp both ends lamp cap be correctly installed in normal work with regard to LED straight lamp In lamp holder) it is real with (i.e. LED straight lamp one end lamp cap is installed in lamp holder and other end lamp cap contact human body) one when changing lamp test The magnitude of current for applying example compares:

Normal work changes lamp test

Maximum transient current

Minimum transient current

Wherein, in denominator part, Rfuse is the fuse resistance value (10 nurse difficult to understand) of LED straight lamp, and 500 nurses difficult to understand are simulation Resistance value of the conductive characteristic of human body in transient response；And in molecular moiety, take the maximum voltage of rms voltage 90V~305V It is worth (305*1.414) and minimum voltage difference 50V.If from above embodiments it is known that LED straight lamp both ends lamp cap just It is really installed in lamp holder, minimum transient current when working normally is 5A；But when LED straight lamp one end lamp cap is installed on lamp holder When interior and other end lamp cap contacts human body, maximum transient current but only has 845mA.Therefore, the utility model utilization can pass through Transient response flows through the electric current of the capacitor (such as: the filter capacitor of filter circuit) in LED power circuit to detect LED straight lamp With the installation condition of lamp holder, that is, detect LED straight lamp whether be correctly installed in lamp holder, and LED straight lamp not yet just When being really installed in lamp holder, more provide what a protection mechanism was got an electric shock to avoid user because accidentally touching LED straight lamp current-carrying part Problem.The above embodiments are only to illustrate the utility model and are not the implementation to limit the utility model.

Then, referring again to Figure 17 A, when LED straight lamp changes the outfit when lamp holder, detection pulse generating module 2740 is one After the section time (this time determines the pulse period), output rises to one first high levle electricity from one first low level voltage Pressure, and this first high levle voltage is exported to testing result latch cicuit 2760 via a path 2741.Testing result latches electricity After road 2760 receives this first high levle voltage, one second high levle voltage is exported simultaneously via a path 2761 to switching electricity Road 2780 and detection pulse generating module 2740.After switching circuit 2780 receives this second high levle voltage, switching circuit 2780 are connected so that an electric power loop of LED straight lamp (includes at least the first installation sense terminal 2521, switching circuit 2780, road Diameter 2781, detection decision circuit 2770 and the second installation sense terminal 2522) conducting；And at the same time, detect pulse generating module 2740 a period of time after receiving the second high levle voltage returned by testing result latch cicuit 2760, (this time determined Determine pulse width), export from the first high levle voltage drop back to the first low level voltage (the first low level voltage of first time, First high levle voltage and secondary first low level voltage constitute one first pulse signal DP1).And detect decision circuit 2770 LED straight lamp electric power loop conducting when, detect on its circuit one first sampled signal SP1 (such as: voltage letter Number), when this first sampled signal SP1 is greater than and/or is equal to a setting signal (such as: a reference voltage Vref), according to upper State the application principle of the utility model, indicate that LED straight lamp is correctly installed in lamp holder, thus detect decision circuit 2770 via One path 2771 exports a third high levle voltage (the first high levle signal) to testing result latch cicuit 2760.Detection knot Fruit latch cicuit 2760 receives this third high levle voltage and then exports and maintain one second high levle voltage (the second high levle Signal) to switching circuit 2780, switching circuit 2780 receives this second high levle voltage and then maintains conducting so that LED straight tube The electric power loop of lamp maintains conducting, detects pulse generating module 2740 therebetween and no longer generates pulse output.

When this first sampled signal SP1 is less than this setting signal, according to the application principle of above-mentioned the utility model, indicate LED straight lamp is not yet correctly installed in lamp holder, therefore is detected decision circuit 2770 and exported a third low level voltage (first Low level signal) to testing result latch cicuit 2760.Testing result latch cicuit 2760 receive this third low level voltage into And export and maintain the second low level voltage (the second low level signal) to switching circuit 2780, switching circuit 2780 receive this Two low level voltages and then maintenance end so that the electric power loop of LED straight lamp maintains open circuit.In the case, user is avoided The problem of lamp holder Nei Shiyin accidentally touches LED straight lamp current-carrying part and gets an electric shock not yet correctly is installed in LED straight lamp.

After the electric power loop of above-mentioned LED straight lamp maintains open circuit a period of time (i.e. pulse cycle time), pulse is detected The output that module 2740 occurs rises to the first high levle voltage from the first low level voltage again, and exports via path 2741 To testing result latch cicuit 2760.After testing result latch cicuit 2760 receives this first high levle voltage, via path 2761 export one second high levle voltage to switching circuit 2780 and detection pulse generating module 2740 simultaneously.Work as switching circuit After 2780 receive this second high levle voltage, switching circuit 2780 is connected again so that the electric power loop of LED straight lamp (at least wraps Include the first installation sense terminal 2521, switching circuit 2780, path 2781, detection decision circuit 2770 and the second installation sense terminal 2522) it is also connected again；At the same time, detection pulse generating module 2740 is returned in reception by testing result latch cicuit 2760 It a period of time (this time determines pulse width) after the second high levle voltage passed, exports from the first high levle voltage drop Return one first low level voltage (the first low level voltage of third time, secondary first high levle voltage and the 4th time the One low level voltage constitutes one second pulse signal DP2).And detect decision circuit 2770 LED straight lamp electric power loop again When secondary conducting, the one second sampled signal SP2 (such as: voltage signal) on its circuit is also detected again, when this second sampling letter It is former according to the application of above-mentioned the utility model when number SP2 is greater than and/or is equal to setting signal (such as: a reference voltage Vref) Reason indicates that LED straight lamp is correctly installed in lamp holder, therefore detects decision circuit 2770 and export third height via path 2771 Level voltage (the first high levle signal) is to testing result latch cicuit 2760.Testing result latch cicuit 2760 receives this third High levle voltage exports in turn and maintains one second high levle voltage (the second high levle signal) to switching circuit 2780, switch electricity Road 2780 receives this second high levle voltage and then maintains to be connected the electric power loop maintenance conducting so that LED straight lamp, examines therebetween It surveys pulse generating module 2740 and no longer generates pulse wave output.

When this second sampled signal SP2 is less than this setting signal, according to the application principle of above-mentioned the utility model, indicate LED straight lamp is not installed in lamp holder correctly yet, therefore is detected decision circuit 2770 and exported a third low level voltage (first Low level signal) to testing result latch cicuit 2760.Testing result latch cicuit 2760 receive this third low level voltage into And export and maintain one second low level voltage (the second low level signal) to switching circuit 2780, switching circuit 2780 receives this Second low level voltage and then maintenance end so that the electric power loop of LED straight lamp maintains open circuit.

In the example of Figure 23 B, because being based on the first sampled signal SP1 caused by the first pulse signal DP1 and being based on Second sampled signal SP2 caused by second pulse signal DP2 is smaller than reference voltage Vref, therefore switchs during this section Circuit 2780 can be maintained at off state, and be activated driving circuit (not being painted) will not.Until third pulse signal After DP3 is generated, since detection decision circuit 2770 can generate LED according to the third sampled signal SP3 for being higher than reference voltage Vref The testing result that straight lamp has been properly installed, so that switching circuit 2780 can be detected result latch cicuit 2760 and be exported High levle voltage maintains on state so that electric power loop maintains conducting.The driving circuit in power module can be based on electricity at this time Voltage on resource loop and be activated and start operation, and then generate to light control signal Slc and carry out power switched switch and (not draw Show) so that driving current can be generated and light LED module.

Then, please referring also to Figure 17 B to Figure 17 E, when LED straight lamp changes the outfit when lamp holder, a driving voltage is via electricity 2742 pairs of capacitors 2743 are hindered to charge, and when the voltage of capacitor 2743 rise to be enough to trigger schmitt trigger 2744 when, Schmitt trigger 2744 from initial one first low level voltage become one first high levle voltage output to or door 2763 One input terminal.Or door 2763 is receiving after the first high levle voltage that schmitt trigger 2744 is exported or door 2763 Export one second high levle voltage to transistor 2782 base terminal and resistance 2747.When the base terminal of transistor 2782 receives From or the second high levle voltage that is exported of door 2763 after, the collector terminal of transistor 2782 is connected with emitter-base bandgap grading end so that The electric power loop of LED straight lamp (includes at least the first installation sense terminal 2521, transistor 2782, resistance 2774 and the second installation Sense terminal 2522) conducting；And at the same time, what the base terminal of transistor 2746 was exported via the reception of resistance 2747 or door 2763 After second high levle voltage, ground connection is connected with emitter-base bandgap grading end in the collector terminal of transistor 2746, so that the voltage of capacitor 2743 is via electricity Resistance 2745 is discharged over the ground, when the undertension of capacitor 2743 is to trigger schmitt trigger 2744, schmitt trigger 2744 Output drop back to the first low level voltage (the first low level voltage of first time, the first high levle electricity from the first high levle voltage Pressure constitutes one first pulse signal with secondary first low level voltage).And when the conducting of the electric power loop of LED straight lamp, The electric current that the capacitor (such as: the filter capacitor of filter circuit) in LED power circuit is flowed through by transient response flows through transistor 2782 with resistance 2774, and a voltage signal is formed on resistance 2774, this voltage signal is via comparator 2772 and a reference Voltage (being 1.3V in the present embodiment, so without being limited thereto) is compared, when this voltage signal is greater than and/or is equal to this reference voltage When, comparator 2772 exports a third high levle voltage to the frequency input CLK of D flip-flop 2762, simultaneously because D type The data input pin D connection driving voltage of trigger 2762, therefore the output end Q of D flip-flop 2762 exports high levle electricity Be pressed onto or another input terminal of door 2763 so that or door 2763 export and maintain the second high levle voltage to transistor 2782 Base terminal, so that the electric power loop of transistor 2782 and LED straight lamp maintains conducting.Due to or door 2763 output simultaneously Maintain the second high levle voltage, therefore transistor 2746 also maintains conducting to be grounded so that the voltage of capacitor 2743 can not on It is raised to and is enough to trigger schmitt trigger 2744.

And when the voltage signal on resistance 2774 is less than reference voltage, comparator 2772 exports a third low level voltage To the frequency input CLK of D D-flip flop 2762, simultaneously because the initial output value of D flip-flop 2762 is zero, therefore D type The output end Q of trigger 2762 exports a low level voltage and arrives or another input terminal of door 2763, and due to or door 2763 The schmitt trigger 2744 that one end is connected also restores to export the first low level voltage, therefore or door 2763 export and maintain the Two low level voltages to transistor 2782 base terminal so that transistor 2782 maintain cut-off and LED straight lamp electricity Resource loop maintains open circuit.However, due to or door 2763 export and maintain the second low level voltage, transistor 2746 also maintains In off state, voltage to be driven again charges to capacitor 2743 via resistance 2742 to repeat to detect next time (pulse) It surveys.

It is worth noting that, the pulse period is determined by the resistance value of resistance 2742 and the capacitance of capacitor 2743, In some embodiments, the time interval of pulse signal is 3ms~500ms, and further, the time interval of pulse signal is 20ms ~50ms；Pulse width is determined by the resistance value of resistance 2745 and the capacitance of capacitor 2743, in certain embodiments, The width of pulse signal includes 1us~100us, and further, the width of pulse signal includes 10us~20us；Zener diode 2748 provide protection against, but it can be omitted；Resistance 2774 is considered based on power factor (PF), can be two resistor coupled in parallel, equivalent Resistance value includes 0.1 nurse difficult to understand of nurse~5 difficult to understand；Resistance 2776 and 2777, which provides partial pressure, ensures that input voltage is higher than comparator 2773 Reference voltage (being 0.3V in the present embodiment, so without being limited thereto)；Capacitor 2778 provides pressure stabilizing and filter function；Diode 2775 is true The one-way of information-preserving number transmission.In addition, at this point it is to be emphasized that, installation detecting module disclosed by the utility model is applicable to Other both-ends into electricity LED illumination device, such as: with Double-End Source construction for electricity LED light and comprising directly utilize city As LED light of external drive voltage etc., the utility model is not intended to limit installation and detects for electricity or the signal exported using ballast Survey the application range of module.

8A referring to Figure 1, Figure 18 A are to be shown according to the circuit of the installation detecting module of the utility model third preferred embodiment It is intended to.Installation detecting module 2520 may include a pulse generation auxiliary circuit 2840, an integrated control module 2860, one switch electricity Road 2880 and a detection determine auxiliary circuit 2870.The overall operation and second of the installation detecting module of the present embodiment is preferably Embodiment installs the similar of detecting module, therefore can refer to signal sequence depicted in Figure 23 B.Wherein, integrated control module 2860 include at least three foot positions such as two input terminal IN1, IN2 and output end OT.Pulse generation auxiliary circuit 2840 electrically connects The input terminal IN1 and output end OT for connecing integrated control module 2860, to assist integrated control module 2860 to generate a control letter Number.Detection determines that auxiliary circuit 2870 is electrically connected the input terminal IN2 and switching circuit 2880 of integrated control module 2860, can When switching circuit 2880 is connected with LED power circuit, to return the sampled signal being associated on electric power loop to integrated control The input terminal IN2 of molding block 2860, so that integrated control module 2860 can judge LED straight lamp and lamp based on this sampled signal The installation condition of seat.One end of LED straight lamp electric power loop is electrically connected in switching circuit 2880 and detection determines auxiliary electricity Road 2870, the control signal exported to receive integrated control module 2860, and (that is, arteries and veins during the enable of control signal During punching) in conducting so that LED straight lamp electric power loop be connected.

More specifically, integrated control module 2860 can be used to according to signal received on input terminal IN1, at one section By output end OT output there is the control signal of an at least pulse switching circuit 2880 is briefly connected in detection-phase.Herein In section detection-phase, whether integrated control module 2860 can correctly be pacified according to the signal detection LED straight lamp on input terminal IN2 It is filled in lamp holder and will test result latch, using as the foundation that switching circuit 2880 whether is connected after detection-phase (that is, deciding whether normal power supply to LED module).Thin portion circuit framework and the integrated circuit running of third preferred embodiment are said It is bright to be successively described in down.

8B referring to Figure 1, for according to the internal circuit mould of the integrated control module of the utility model third preferred embodiment Block schematic diagram.Integrated control module 2860 includes that impulse generating unit 2862, testing result latch units 2863 and detection are single Member 2864.Impulse generating unit 2862 can receive signal provided by pulse generation auxiliary circuit 2840 from input terminal IN1, and An at least pulse signal is generated accordingly, and the pulse signal generated can be provided to testing result latch units 2863.In this reality It applies in example, impulse generating unit 2862 for example (can be painted with schmitt trigger, can refer to the schmitt trigger of Figure 17 B 2744) implement, input terminal couples the input terminal IN1 of integrated control module 2860, and its output end couples integrated control mould The output end OT of block 2860.But the impulse generating unit 2862 of the utility model is not limited only to the electricity using schmitt trigger Road framework is implemented.Any analog/digital circuit framework that may be implemented to generate an at least pulse signal function all can be applied to This.

Testing result latch units 2863 couple impulse generating unit 2862 and detection unit 2864.In detection-phase, Testing result latch units 2863 can be provided to defeated using pulse signal caused by impulse generating unit 2862 as control signal Outlet OT.On the other hand, testing result latch units 2863 can also will test testing result signal lock provided by unit 2864 It deposits, and is provided to output end OT after detection-phase, use according to whether the installation condition of LED straight lamp correctly determines to be No conducting switching circuit 2880.In the present embodiment, testing result latch units 2863 can be for example with D flip-flop collocation or door Circuit framework (be not painted, can refer to the D flip-flop 2762 of Figure 17 D with or door 2763) implement.Wherein, D flip-flop With a data input pin, a frequency input and an output end.The data input pin connects driving voltage VCC, and the frequency is defeated Enter to hold connecting detection unit 2864.Or door has a first input end, one second input terminal and an output end, the first input end Connect impulse generating unit 2862, second input terminal connect D flip-flop output end, and or door output end connect output Hold OT.But the testing result latch units 2863 of the utility model be not limited only to using D flip-flop with or door circuit framework To implement.Any analog/digital that may be implemented to latch and export the function that control signal is switched with control switch circuit 2880 Circuit framework all can be applied to this.

Detection unit 2864 couples testing result latch units 2863.Detection unit 2864 can be received from input terminal IN2 and be examined The signal for determining that the lock of auxiliary circuit 2870 provides is surveyed, and generates the detection whether indication LED straight lamp is properly installed accordingly Consequential signal, and the testing result signal generated can be provided to testing result latch units 2863.In the present embodiment, it detects Unit 2864 can for example be implemented with comparator (not being painted, can refer to the comparator 2772 of Figure 17 C).Wherein, comparator has One first input end, one second input terminal and an output end, the first input end connect a setting signal, which connects Connect input terminal IN2, and the output end connecting detection result latch units 2863 of comparator 2772.But the detection list of the utility model Member 2864 is not limited only to implement using the circuit framework of comparator.It is any to may be implemented to be sentenced according to the signal on input terminal IN2 The analog/digital circuit framework whether disconnected LED straight lamp is properly installed all can be applied to this.

8C referring to Figure 1, Figure 18 C are the electricity according to the pulse generation auxiliary circuit of the utility model third preferred embodiment Road schematic diagram.Pulse generation auxiliary circuit 2840 includes resistance 2842,2844 and 2846, capacitor 2843 and transistor 2845. One end of resistance 2842 connects a driving voltage (such as VCC).The other end of one end resistance 2842 of capacitor 2843, and capacitor 2843 other end ground connection.The connecting pin of one end connection resistance 2842 and capacitor 2843 of resistance 2844.Transistor 2845 has One base terminal, a collector terminal and an emitter-base bandgap grading end.The collector terminal connects the other end of resistance 2844, and the emitter-base bandgap grading end is grounded.Electricity The base terminal of one end connection transistor 2845 of resistance 2846, and the other end of resistance 2846 is connected to integrated control via path 2841 The output end OT of molding block 2840 and the control terminal of switching circuit 2880.Pulse generation auxiliary circuit 2840 further includes Zener two Pole pipe 2847, has an anode tap and a cathode terminal, which connects the other end of capacitor 2843 and ground connection, the cathode One end that end connection capacitor 2863 is connect with resistance 2842.

8D referring to Figure 1, Figure 18 D are the electricity that auxiliary circuit is determined according to the detection of the utility model third preferred embodiment Road schematic diagram.Detection determines that auxiliary circuit 2870 includes resistance 2872,2873 and 2875, capacitor 2874 and diode 2876. One end of one end connection switch circuit 2880 of resistance 2872, and the other end connection LED power circuit of resistance 2872 is another End (such as: the second installation sense terminal 2522).One end of resistance 2873 connects the driving voltage (such as VCC).The one of resistance 2874 End connects the other end of resistance 2873, and the input terminal IN2 of integrated control module 2860 is connected to via path 2871, and resistance 2874 other end ground connection.Capacitor 2875 is in parallel with resistance 2874.Diode 2876 has an anode tap and a cathode terminal, the sun One end of extreme connection resistance 2872, and the connecting pin of cathode terminal connection resistance 2873 and 2874.In certain embodiments, on Stating resistance 2873, resistance 2874, capacitor 2875 and diode 2876 can be omitted, when diode 2876 is omitted, electricity One end of resistance 2872 is directly connected to the input terminal IN2 of integrated control module 2860 via path 2871.In some embodiments In, considered based on power factor (PF), resistance 2872 can be two resistor coupled in parallel, and equivalent resistance includes 0.1 nurse difficult to understand of nurse~5 difficult to understand.

8E referring to Figure 1, Figure 18 E are to be illustrated according to the circuit of the switching circuit of the utility model third preferred embodiment Figure.Switching circuit 2880 includes transistor 2882, has a base terminal, a collector terminal and an emitter-base bandgap grading end.Transistor 2882 Base terminal is connected to the output end OT of integrated control module 2860 via path 2861, and the collector terminal of transistor 2882 connects LED One end (such as: first installation sense terminal 2521) of electric power loop, and the emitter-base bandgap grading end connecting detection of transistor 2882 determine it is auxiliary Help circuit 2870.Wherein, the also replaceable equivalent elements at other electronic switch of transistor 2882, such as: MOSFET etc..

It is intended to first illustrate herein, installation that the installation detecting module of the present embodiment is utilized detecting principle is and aforementioned the Two preferred embodiments are identical, are all based on the principle that capacitance voltage will not mutate, the capacitor in LED straight lamp electric power loop Before electric power loop conducting, both end voltage is zero and short-circuit condition is presented in transient response；And when electric power loop is in LED straight tube When lamp is correctly installed on lamp holder, transient response current-limiting resistance is smaller and peak value of response electric current is larger, when electric power loop is straight in LED When spot is not installed on lamp holder correctly, the principles such as transient response current-limiting resistance is larger and peak value of response electric current is smaller are subject to reality It applies, and the leakage current of LED straight lamp is made to be less than 5MIU.In other words, exactly sentence through the mode of detecting peak value of response electric current Whether disconnected LED straight lamp is correctly installed in lamp holder.Therefore about the transient current portion in the case where working normally and changing lamp test Divide the explanation that can refer to previous embodiment, it is no longer repeated in this.It is beneath to transport the integrated circuit for only just installing detecting module It is illustrated.

Referring again to Figure 18 A, when LED straight lamp changes the outfit when lamp holder, LED straight lamp is in the case where there is one end into electricity Meeting is so that driving voltage VCC is provided to the modules/circuits in installation detecting module 2520.2840 meeting of pulse generation auxiliary circuit It reacts on driving voltage VCC and carries out charging action.(this time determines the pulse period) over time, output voltage (claiming the first output voltage in this) from one first low level voltage is increased over one, and forward (voltage value can be according to electricity for threshold voltage Design and define in road), and via the input terminal IN1 of a path 2841 output to integrated control module 2860.Integrated control module 2860 after input terminal IN1 the first output voltage of reception, the control signal (for example, one of an enable is exported via a path 2861 High levle voltage) to switching circuit 2880 and pulse generation auxiliary circuit 2840.When switching circuit 2880 receives the control of this enable After signal processed, switching circuit 2880 is connected so that an electric power loop of LED straight lamp (includes at least the first installation sense terminal 2521, switching circuit 2880, path 2881, detection determine auxiliary circuit 2870 and the second installation sense terminal 2522) conducting；And This simultaneously, pulse generation auxiliary circuit 2840 can react on the control signal of enable and that discharge path is connected is dynamic to carry out electric discharge Make, and a period of time after the control signal for receiving the enable returned by integrated control module 2860, (this time determined Determine pulse width), the first output voltage gradually drops back to the first low level voltage from the voltage quasi position for being more than forward threshold voltage.Its In, when the first output voltage is decreased below reverse threshold voltage (voltage value can be defined according to circuit design), integrate Control module 2860 can react on the first output voltage and the control signal of enable is pulled down to forbidden energy level (that is, output forbidden energy Control signal, wherein the control signal of forbidden energy is, for example, a low level voltage) so that control signal have impulse form Signal waveform (that is, by the low level voltage of the first time in control signal, high levle voltage and secondary low level voltage Constitute one first pulse signal).And it detects and determines that auxiliary circuit 2870 in the electric power loop conducting of LED straight lamp, detects it One first sampled signal (such as: voltage signal) on circuit, and the first sampled signal is supplied to collection via input terminal IN2 At control module 2960.When integrated control module 2960 determine this first sampled signal be greater than or equal to a setting signal (such as: One reference voltage) when, according to the application principle of above-mentioned the utility model, indicate that LED straight lamp is correctly installed in lamp holder, therefore Integrated control module 2860 can export and maintain the control signal of enable to switching circuit 2880, and switching circuit 2880 receives this The control signal of enable maintains to be connected in turn the electric power loop maintenance conducting so that LED straight lamp, therebetween integrated control module 2860 no longer generate pulse output.

On the contrary, when integral control circuit 2860 determines that this first sampled signal is less than this setting signal, according to above-mentioned The application principle of the utility model indicates that LED straight lamp is not yet correctly installed in lamp holder, therefore integral control circuit can export And maintaining the control signal of forbidden energy to switching circuit 2880, switching circuit 2880 receives the control signal of this forbidden energy and then maintains to cut Only so that the electric power loop of LED straight lamp maintains open circuit.

Discharge path due to pulse generation auxiliary circuit 2840 is ended, so that pulse generation auxiliary circuit 2840 is again Carry out charging action.Therefore, after the electric power loop of above-mentioned LED straight lamp maintains open circuit a period of time (i.e. when the pulse period Between), the first output voltage of pulse generation auxiliary circuit 2840 is increased over forward threshold value from the first low level voltage again Voltage, and via the input terminal IN1 of the output of path 2841 to integrated control module 2860.Integrated control module 2860 is from input terminal After IN1 receives the first output voltage, signal will can be controlled again from forbidden energy level and is pulled to enable level (that is, exporting enable Control signal), and the control signal of enable is provided to switching circuit 2880 and pulse generation auxiliary circuit 2840.Work as switch Circuit 2880 receive this enable control signal after, switching circuit 2880 be connected so that the electric power loop of LED straight lamp (at least Determine that auxiliary circuit 2870 is detectd with the second installation including the first installation sense terminal 2521, switching circuit 2880, path 2881, detection Survey end 2522) be also connected again.At the same time, pulse generation auxiliary circuit 2840 can react on the control signal of enable again And discharge path is connected and carries out discharging action, and believes in the control for receiving the enable returned by integrated control module 2860 A period of time (this section time determine pulse width) after number, the first output voltage is from the voltage quasi position for being more than forward threshold voltage The first low level voltage is gradually dropped back to again.Wherein, when the first output voltage is decreased below reverse threshold voltage, control is integrated Molding block 2860 can react on the first output voltage and the control signal of enable is pulled down to forbidden energy level, so that control Signal has the signal waveform of impulse form (that is, by the low level voltage of the third time in control signal, secondary high levle Voltage and the 4th low level voltage constitute one second pulse signal).And it detects and determines auxiliary circuit 2870 in LED straight lamp Electric power loop when being connected again, also detect one second sampled signal (such as: voltage signal) on its circuit again, and will Second sampled signal is supplied to integrated control module 2860 via input terminal IN2.When this second sampled signal is greater than and/or is equal to Setting signal (such as: a reference voltage) when, according to the application principle of above-mentioned the utility model, indicate that LED straight lamp is correctly pacified Loaded in lamp holder, therefore integrated control module 2860 can export and maintain the control signal of enable to switching circuit 2880, switch Circuit 2880 receives the control signal of this enable and then maintains to be connected so that the electric power loop of LED straight lamp maintains conducting, therebetween Integrated control module 2860 no longer generates pulse wave output.

It is practical new according to above-mentioned when integral control circuit 2860 determines that this second sampled signal is less than this setting signal The application principle of type indicates that LED straight lamp is not installed in lamp holder correctly yet, therefore integral control circuit can export and maintain to prohibit Can control signal to switching circuit 2880, switching circuit 2880 receive the control signal of this forbidden energy so that maintain to end so that The electric power loop of LED straight lamp maintains open circuit.In the case, user is avoided not yet correctly to be installed on lamp in LED straight lamp The problem of seat Nei Shiyin accidentally touches LED straight lamp current-carrying part and gets an electric shock.

Internal circuit/module running of the beneath installation detecting module for being more particularly described the present embodiment.Please referring also to scheme 18B to Figure 18 E, when LED straight lamp changes the outfit when lamp holder, a driving voltage VCC fills capacitor 2743 via resistance 2742 Electricity, and it is enough (that is, be more than forward threshold voltage) when trigger pulse generates unit 2862 when the voltage of capacitor 2843 rises to, arteries and veins The output that punching generates unit 2862 can become one first high levle voltage output to detection from one first initial low level voltage As a result latch units 2863.Testing result latch units 2863 receive exported from impulse generating unit 2862 it is first high After level voltage, testing result latch units 2863 can export one second high levle voltage to transistor 2882 via output end OT Base terminal and resistance 2846.It is exported when the base terminal reception of transistor 2882 from testing result latch units 2863 After second high levle voltage, the collector terminal of transistor 2882 is connected with emitter-base bandgap grading end, so that the electric power loop of LED straight lamp (including at least the first installation sense terminal 2521, transistor 2882, resistance 2872 and the second installation sense terminal 2522) conducting.

And at the same time, the base terminal of transistor 2845 receives the second high levle electricity on output end OT via resistance 2846 After pressure, ground connection is connected with emitter-base bandgap grading end in the collector terminal of transistor 2845, so that the voltage of capacitor 2843 is put over the ground via resistance 2844 Electricity, when the undertension of capacitor 2843 generates unit 2862 with trigger pulse, the output of impulse generating unit 2862 is from first High levle voltage drop back to the first low level voltage (the first low level voltage of first time, the first high levle voltage with it is secondary First low level voltage constitutes one first pulse signal).And when the conducting of the electric power loop of LED straight lamp, pass through transient response The electric current for flowing through the capacitor (such as: the filter capacitor of filter circuit) in LED power circuit flows through transistor 2882 and resistance 2872, and a voltage signal is formed on resistance 2872, this voltage signal is provided to input terminal IN2, so that detection unit 2864 can be compared this voltage signal with a reference voltage.

When detection unit 2864 determines that this voltage signal is greater than or equal to this reference voltage, the output of detection unit 2,864 one Third high levle voltage is to testing result latch units 2863.And when detection unit 2864 determines the voltage signal on resistance 2872 When less than reference voltage, detection unit 2864 exports a third low level voltage to testing result latch units 2863.

Wherein, testing result latch units 2863 can latch third high levle voltage/the provided by detection unit 2864 Three low level voltages, then by the progress of signal provided by the signal of latch and impulse generating unit 2862 or logical operation, and According to or logical operation result determine output control signal be the second high levle voltage or the second low level voltage.

More specifically, when detection unit 2864 judges that the voltage signal on resistance 2872 is greater than or equal to reference voltage When, testing result latch units 2863 can latch the third high levle voltage that detection unit 2864 is exported, and use maintenance output Second high levle voltage to transistor 2882 base terminal so that the electric power loop of transistor 2882 and LED straight lamp Maintain conducting.Since testing result latch units 2863 can export and maintain the second high levle voltage, transistor 2845 is also Conducting ground connection is maintained, so that the voltage of capacitor 2843, which can not rise to, is enough trigger pulse generation unit 2862.Work as detection When unit 2864 judges that the voltage signal on resistance 2872 is less than reference voltage, detection unit 2864 and impulse generating unit All be low level voltage provided by 2862, thus by or logical operation after, testing result latch units 2863 can export simultaneously Maintain the second low level voltage to the base terminal of transistor 2882, so that transistor 2882 maintains cut-off and LED straight tube The electric power loop of lamp maintains open circuit.However, since the control signal on output end OT is maintained at the second low level voltage at this time, Therefore transistor 2845 also maintains off state, and voltage VCC to be driven again charges to capacitor 2843 via resistance 2842 To repeat (pulse) next time detecting.

One, which is attached to, in this is mentioned that the detection-phase described in the present embodiment can be defined as driving voltage VCC and be mentioned It is supplied to installation detection module 2520, but detection unit 2864 not yet determines that the voltage signal on resistance 2872 is greater than or equal to reference During voltage.In in detection-phase, since the control signal that testing result latch units 2863 are exported can repeatedly make crystalline substance The conducting of body pipe 2845 and cut-off, so that discharge path is periodically switched on and cut-off.Capacitor 2843 can react on transistor 2845 conduction and cut-off, and periodic charge and discharge.Therefore, testing result latch units 2863 can be in detection-phase Export the control signal with recurrent pulses waveform.And when detection unit 2864 determines that the voltage signal on resistance 2872 is greater than Or when being equal to reference voltage or driving voltage VCC offer being provided, can be considered detection-phase terminate (have determined that correct installation, Or LED fluorescent tube is pulled out).Testing result latch units 2863, which can export, at this time maintains the second high levle voltage or The control signal of two low level voltages.

On the other hand, from the point of view of comparison chart 17A, for the second preferred embodiment, the integrated control mould of the present embodiment Block 2860, which can be, will test pulse generating module 2740, testing result latch cicuit 2760 and detection decision circuit 2770 Partial circuit component it is integrated constituted, and the circuit unit for not being integrated does not respectively constitute the pulse generation of the present embodiment then Auxiliary circuit 2840 and detection determine auxiliary circuit 2870.In other words, the impulse generating unit in integrated control module 2860 Function/circuit framework of 2862 collocation pulse generation auxiliary circuits 2840 can be equal to the detection pulse hair of the second preferred embodiment Raw module 2740, function/circuit framework of the testing result latch units 2863 in integrated control module 2860 can be equal to the The testing result latch module 2760 of two preferred embodiments and the detection unit 2864 in integrated control module 2860 are arranged in pairs or groups and are examined It surveys and determines that function/circuit framework of auxiliary circuit 2870 can be equal to detection decision circuit 2770.

9A referring to Figure 1, Figure 19 A are the circuit mould according to the installation detecting module of the 4th preferred embodiment of the utility model Block schematic diagram.The installation detecting module of the present embodiment may be, for example, include power end VP1, the first switch terminal SP1 and second A trigistor 2920 of switch terminal SP2.Wherein, the power end VP1 of trigistor 2920 is suitable for receiving driving electricity Press VCC, the first switch terminal SP1 be adapted to one of the first installation sense terminal 2521 and second installation sense terminal 2522 (in Schema is depicted as connection the first installation sense terminal 2521, but is not limited only to this), and the second switch terminal SP2 is adapted to the One installation sense terminal 2521 with the second installation sense terminal 2522 is wherein another (is depicted as connect second in schema and installs detecting End 2522, but it is not limited only to this).

Trigistor 2920 includes signal processing unit 2930, signal generation unit 2940, signal acquisition unit 2950 and switch unit 2960.In addition, trigistor 2920 can further include internal electric source detecting unit 2970.Signal Processing unit 2930 can be according to signal provided by signal generation unit 2940 and signal acquisition unit 2950, and in detection-phase The control signal with impulse waveform is exported, and output maintains high voltage level or low voltage level after detection-phase Signal is controlled, with the on state of control switch unit 2960, uses the electric power loop for deciding whether that LED straight lamp is connected.Letter Number generate unit 2940 can when receiving driving voltage VCC, generate pulse signal to signal processing unit 2930.Wherein, believe Number generating pulse signal caused by unit 2940 can be produced by from the received reference signal in outside, or by it Independent generation itself, the utility model limit not to this.The outside ＂＂ described in this is relative to signal generation unit For 2940, as long as that is, right and wrong reference signal as caused by signal generation unit 2940, either trigistor Produced by external circuit in 2920 produced by other circuits, or as trigistor 2920, come under described herein From external received reference signal.Signal acquisition unit 2950 can be used to sample the electric signal on the electric power loop of LED straight lamp, And the installation condition of LED straight lamp is detected according to the signal being sampled to, then the testing result signal that will indicate testing result Signal processing unit 2930 is transmitted to be handled.

In an exemplary embodiment, the trigistor 2920 can be realized using integrated circuit, that is, described three End switch device can be the switch control chip at three ends, can be applicable to any kind of both-end into electric LED straight tube In lamp, uses and the function of electrocution-proof protection is provided.It should further be appreciated that the trigistor 2920 can not be limited and only be wrapped Containing there are three foot position/connecting pins, but there are three foot position it is wherein to be configured in the above manner in multiple foot positions, comes under this reality Apply the range to be protected of example.

In an exemplary embodiment, signal processing unit 2930, signal generation unit 2940, signal acquisition unit 2950, Switch unit 2960 and internal electric source detecting unit 2970 can be realized (but not with the circuit framework of Figure 19 B to Figure 19 F respectively It is only limitted to this).Beneath point is illustrated with regard to each unit.

9B referring to Figure 1, Figure 19 B are to be shown according to the circuit of the signal processing unit of the 4th preferred embodiment of the utility model It is intended to.Signal processing unit 2930 includes driver 2932 or door 2933 and D flip-flop 2934.Driver 2932 has The output end of input terminal and output end, driver 2932 believes control to use through 2931 connection switch unit 2960 of path Number it is supplied to switch unit 2960.Or door 2933 has first input end, the second input terminal and output end.Or the of door 2933 One input terminal through 2941 connection signal of path generate unit 2940, and or door 2933 output end coupling drivers 2932 it is defeated Enter end.D flip-flop 2934 has data input pin (D), frequency input (CK) and output end (Q).D flip-flop 2934 Data input pin receive driving voltage VCC, the frequency input of D flip-flop 2934 is connected to signal acquisition through path 2951 Unit 2950, and the output end coupling of D flip-flop or the second input terminal of door 2933.

9C referring to Figure 1, Figure 19 C are to be shown according to the circuit of the signal generation unit of the 4th preferred embodiment of the utility model It is intended to.Signal generation unit 2940 includes resistance 2942 and 2943, capacitor 2944, switch 2945 and comparator 2946.Resistance 2942 one end receives driving voltage VCC, and resistance 2942, resistance 2943 and capacitor 2944 are serially connected with driving voltage VCC Between ground terminal.Switch 2945 is in parallel with capacitor 2944.Comparator 2946 has first input end, the second input terminal and defeated Outlet.The connecting pin of the first input end coupling resistance 2942 and 2943 of comparator 2946, the second input terminal of comparator 2946 Receive a reference voltage Vref, and the control terminal of the output end coupling switch 2945 of comparator 2946.

19D is referred to, Figure 19 D is to illustrate according to the circuit of the signal acquisition unit of the 4th preferred embodiment of the utility model Figure.Signal acquisition unit 2950 includes or door 2952 and comparator 2953 and 2954.Or door 2952 has first input end, the The output end of two input terminals and output end or door 2952 is connected to signal processing unit 2930 via path 2951.Comparator 2953 first input end is connected to one end of switch unit 2960 via path 2962 (that is, the electric power loop of LED straight lamp On), the second input terminal of comparator 2953 receives one first reference voltage (such as 1.25V, but be not limited to this), and comparator 2953 output end coupling or the first input end of door 2952.The first input end of comparator 2954 receives one second reference voltage (such as 0.15V, but be not limited to this), the first input end of the second input terminal coupling comparator 2953 of comparator 2954, and The output end of comparator 2954 couples or the second input terminal of door 2952.

19E is referred to, Figure 19 E is the circuit diagram according to the switch unit of the 4th preferred embodiment of the utility model. Switch unit 2960 includes transistor 2963, with gate terminal, drain end and source terminal.The gate terminal of transistor 2963 via Path 2931 is connected to signal processing unit 2930, and the drain end of transistor 2963 is connected to the first switch terminal via path 2961 SP1, and the source terminal of transistor 2973 via path 2962 be connected to the second switch terminal SP2, comparator 2953 it is first defeated Enter the second input terminal of end and comparator 2954.

19F is referred to, Figure 19 F is the circuit according to the internal electric source detecting unit of the 4th preferred embodiment of the utility model Schematic diagram.Internal electric source detecting unit 2970 includes clamp circuit 2972, generating circuit from reference voltage 2973, voltage-regulating circuit 2974 and schmitt trigger 2975.Clamp circuit 2972 and voltage-regulating circuit 2974 are respectively coupled to power end VP1, with Driving voltage VCC is received, the movement for carrying out voltage clamp and voltage adjustment to driving voltage VCC respectively is used.Reference voltage produces Raw circuit 2973 couples voltage-regulating circuit, to generate a reference voltage to voltage-regulating circuit 2974.Schmitt trigger 2975 have input terminal and output end, and input terminal couples clamp circuit 2972 and voltage-regulating circuit 2974, and its output end Outputting drive voltage to indicate driving voltage VCC whether a power supply confirmation signal of regular supply.Wherein, if driving voltage VCC is in the state of regular supply, and schmitt trigger 2975 can export enable (such as high levle) power supply confirmation signal, make It obtains driving voltage VCC and is provided to each components/circuits in trigistor 2920.On the contrary, if driving voltage VCC is in Abnormal state, schmitt trigger 2975 can export forbidden energy (such as low level) power supply confirmation signal, use and avoid three ends Each component/circuit because work in switching device 2920 is damaged at abnormal driving voltage VCC.

Referring to Figure 19 A to Figure 19 F, in the running of the present embodiment physical circuit, when LED straight lamp changes the outfit in lamp holder When, driving voltage VCC can be provided to trigistor 2920 via power end VP1.At this point, driving voltage VCC can be via Resistance 2942 and 2943 pair capacitor 2944 charges.And when capacitance voltage is increased over reference voltage Vref, comparator 2946 Can be switched to export high levle voltage to or door 2933 first input end and switch 2945 control terminal.Wherein, switch 2945 This high levle voltage can be reacted on and be connected, so that the beginning of capacitor 2944 is discharged over the ground.Through the process of this charge and discharge, comparator 2946 can export the output signal with impulse form.

On the other hand, during comparator 2946 exports high levle voltage or door 2952 can corresponding output high levle Transistor 2962 is connected in voltage, so that electric current circulates on the electric power loop of LED straight lamp.Wherein, when having electric current in power supply When circuit is circulated, the voltage signal of corresponding current size can be established on path 2972.Comparator 2953 can sample this voltage letter Number and be compared with the first reference voltage (such as 1.25V).

When the voltage signal being sampled to is greater than the first reference voltage (such as 1.25V), comparator 2953 can export high levle Voltage.Or door 2952 can react on high levle voltage that comparator 2953 is exported and generate another high levle voltage to D type and touch Send out the frequency input of device 2934.D flip-flop 2934 can based on or door 2952 output and maintain output high levle voltage. High levle voltage that driver 2932 can react on input terminal and generate the control signal of enable transistor 2963 is connected.This When, even if capacitor 2944 has been discharged to capacitance voltage lower than reference voltage Vref, and it is pulled down to the output of comparator 2946 Low level voltage, since D flip-flop 2934 can maintain output high levle voltage, transistor 2963 can be maintained at conducting State.

When the voltage signal being sampled to is less than the first reference voltage (such as 1.25V), comparator 2953 can export low level Voltage.Or door 2952 can react on low level voltage that comparator 2953 is exported and generate another low level voltage to D type and touch Send out the frequency input of device 2934.D flip-flop 2934 can based on or door 2952 output and maintain output low level voltage. Once at this point, capacitor 2944 is discharged to capacitance voltage lower than reference voltage Vref, and it is low to be pulled down to the output of comparator 2946 Level voltage (that is, at the end of during pulse), due to or two input terminals of door 2952 be all maintained at low level voltage so that defeated Outlet also exports low level voltage, therefore driver 2932 can react on the control letter that the low level voltage received generates forbidden energy Number carry out "off" transistor 2963, so that the electric power loop of LED straight lamp is turned off.

As shown in the above description, the running of the signal processing unit 2930 of the present embodiment is similar to aforementioned second and preferably implements The testing result latch cicuit 2760 of example, the running of signal generation unit 2940 are similar to the detection of aforementioned second preferred embodiment Pulse generating module 2740, the running of signal acquisition unit 2950 are similar to the detection decision circuit of aforementioned second preferred embodiment 2770 and switch unit 2960 running be similar to aforementioned second preferred embodiment switching circuit 2780.

Figure 20 A is referred to, for according to the circuit diagram of the installation detecting module of the 5th preferred embodiment of the utility model. Installing detecting module includes switching circuit 3080, detection pulse generating module 3040, control circuit 3060, detection decision circuit 3070 and detection path circuit 3090.It detects decision circuit 3070 and couples detection path circuit 3090 through path 3081, to detect Survey the signal on detection path circuit 3090.It detects decision circuit 3070 and couples control circuit 3060 through path 3071 simultaneously, with It will test consequential signal and be sent to testing result latch cicuit 3060 through path 3071.Detection pulse generating module 3040 passes through road The coupling detection path circuit 3090 of diameter 3041, and pulse signal is generated to notify detection 3090 conduction detection path of path circuit Opportunity point.The signal latch testing result according to testing result of control circuit 3060 couples switching circuit 3080 through path 3061, with It will test result transmission or be reflected into switching circuit 3080.According to testing result, decision detects the first installation to switching circuit 3080 Survey on or off between end 2521 and the second installation sense terminal 2522.

In the present embodiment, the configuration for detecting pulse generating module 3040 can refer to the detection pulse generation mould of Figure 16 B The detection pulse generating module 2740 of block 2640 or Figure 17 B.Figure 16 B is please referred to, in application detection pulse generating module 2640 When framework is as detection pulse generating module 3040, the path 3041 of the present embodiment can be compared as path 2541, even also door 2652 permeable paths 3041 are connected to detection path circuit 3090.Figure 17 B is please referred to, detects pulse generating module in application When 2740 framework is as detection pulse generating module 3040, the path 3041 of the present embodiment can be compared as path 2741.This Outside, detection pulse generating module 3040 can also passage path 3061 be connected to the output end of control circuit 3060, therefore this implementation The path 3061 of example can compare as path 2761.

Control circuit 3060 can use control chip or any circuit with signal operation processing capacity to implement.When When control circuit 3060 judges user not in contact with fluorescent tube according to testing result signal, control circuit 3060 can control switch circuit 3080 switching state, to enable external power supply that can normally be provided to rear end when fluorescent tube is properly attached on lamp holder LED module.At this point, control circuit 3060 can end detection path.On the contrary, when control circuit 3060 is according to testing result signal When judging that user contacts fluorescent tube, because user has the risk of electric shock, control circuit 3060 can be by switching circuit 3080 Maintain the state of cut-off.

In an exemplary embodiment, control circuit 3060 and switching circuit 3080 can be the driving circuit in power module A part.For example, if driving circuit is switching dc to direct current transducer, switching circuit 3080 can be direct current To the power switch of direct current transducer, and control circuit 3080 can be the controller of the corresponding power switch (e.g. PWM controller).

The configuration of detection decision circuit 3070 can be sentenced with reference to the detection of the detection decision circuit 2670 or Figure 17 C of Figure 16 C Determine circuit 2770.Figure 16 C is please referred to, when the framework of application detection decision circuit 2670 is as detection decision circuit 3070, electricity Resistance 2672 can be omitted.The path 3081 of the present embodiment can compare as path 2581, that is, the positive input terminal of comparator 2671 Detection path circuit 3090 can be connected to.The path 3071 of the present embodiment can compare as path 2571, that is, comparator 2671 Output end can be connected to testing result latch cicuit 3060.Figure 17 C is please referred to, in the framework of application detection decision circuit 2770 When as detection decision circuit 3070, resistance 2774 be can be omitted.The path 3081 of the present embodiment can compare as path 2781, that is, the anode of diode 2775 can be connected to detection path circuit 3090.The path 3071 of the present embodiment can compare Testing result latch cicuit 3060 can be connected to for the output end in path 2771, that is, comparator 2772 and 2773.

The configuration of switching circuit 3080 can be with reference to the switching circuit 2680 of Figure 16 E or the switching circuit 2780 of Figure 17 E.By It is similar in the framework of two switching circuits, explanation is represented with the switching circuit 2680 of Figure 16 E.Figure 16 E is please referred to, in application switch electricity When the framework on road 2680 is as switching circuit 3080, the path 3061 of the present embodiment can be compared as path 2561, and path 2581 will not be connected to detection decision circuit 2570, and be connected directly to the second installation sense terminal 2522.

As shown in fig. 20b, Figure 20 B is the inspection according to the utility model preferred embodiment for the configuration of detection path circuit 3090 Survey the circuit diagram of path circuit.Detecting path circuit 3090 includes transistor 3092 and resistance 3093 and 3094.Crystal Pipe 3092 has base stage, collector and emitter-base bandgap grading, and emitter-base bandgap grading is via 3041 connecting detection pulse generating module 3040 of path.Resistance 3092 Between the emitter-base bandgap grading and ground terminal of cascode transistors 3092, resistance 3093 is serially connected in the collector of transistor 3092 and the first installation is detected Between end 2521.

In the present embodiment, when transistor 3092 receives pulse signal provided by detection pulse generating module 3040 When, it can be connected during pulse.In the case where fluorescent tube at least one end is installed to lamp holder, from the first installation sense terminal 2521 The transistor of conducting can be reacted on to a detection path (passing through resistance 3094, transistor 3092 and resistance 3093) of ground terminal 3092 and be connected therewith, and detection path nodes X on establish a voltage signal.When user does not contact fluorescent tube, The level of the voltage signal is determined according to the partial pressure of resistance 3093 and 3094.When user contacts fluorescent tube, human body Equivalent resistance can be equivalent to be serially connected between nodes X and ground terminal, that is, in parallel with resistance 3092.The voltage signal at this time Level is determined according to the equivalent resistance of resistance 3093,3094 and human body.Whereby, there is suitable resistance value through setting Resistance 3093 and 3094 may make the voltage signal in nodes X that can reflect the state whether user touches fluorescent tube, so that Corresponding testing result signal can be generated according to the voltage signal in nodes X by detecting decision circuit.

In conclusion the present embodiment can penetrate conduction detection path and detect the voltage signal on detection path to judge Whether user has electric shock risk.In addition, for compared to previous embodiment, the detection path of the present embodiment be additionally establish, and Non- is using electric power loop as detection path (also that is, electric power loop and detection path at least part be not be overlapped).Due to volume Electronic building brick on the detection path of outer foundation is less than the electronic building brick on electric power loop, therefore on the detection path additionally established Voltage signal more can accurately reflect the touching state of user.

Furthermore it is similar to described in previous embodiment, circuits/modules described in the present embodiment all or part of can also collect As the configuration of chip, as shown in earlier figures 18A to Figure 19 F, therefore repeated no more in this.

It should be noted that switching circuit 2580 mentioned by the above-mentioned second to the 5th preferred embodiment, 2680,2780, 2880,2960 and 3080 be all a kind of current limliting means embodiment, (such as switching circuit is cut when its role is to be enabled Only) by electric power loop current limit to less than particular value below (such as 5MIU).Those skilled in the art are referring to above-mentioned After embodiment content, it should be appreciated that the current limliting means can be implemented by being generally similar to the framework of switching circuit.Citing For, the switching circuit can use the controllable silicon of electronic switch, electromagnetic switch, relay, three terminal bidirectional (TRIAC), Thyratron transistor (Thyristor), adjustable impedance element (variable resistance, variable capacitance, variable inductance etc.) are implemented.Change speech It, those skilled in the art in this case it should be appreciated that be specifically disclosed about in the concept for implementing current limliting using switching circuit Beneath, the range that this case is included is same and in the equivalency range of all kinds of embodiments of said switching circuit.

In addition, those skilled in the art should can consider in light of actual conditions herein and recognize from the point of view of comprehensive first to the 5th preferred embodiment The revealed installation detecting module of the second preferred embodiment of this case is not only can be used as distributed circuit design in LED straight lamp In, it can also be by partial circuit component integration into an integrated circuit (such as third preferred embodiment), or by whole circuit groups Part is integrated into an integrated circuit (such as the 4th preferred embodiment), uses the circuit cost and volume for saving installation detecting module. In addition, installing detecting module through modularization/integrated setting, it may make installation detecting module that can be easier to collocation in difference In the LED straight lamp design of type, and then improve design compatibility.On the other hand, integrated installation detecting module is straight in LED Under the application of spot, because the circuit area inside fluorescent tube is reduced significantly therefore may make the lighting area of LED straight lamp bright It is promoted aobviously, and then improves the photocurrent versus light intensity performance of LED straight lamp.Furthermore it can make to be integrated due to integrated design The operating current of component reduces and (reduces about 50%), and improves circuit working efficiency, therefore the power saved can be used to It is supplied to LED module to shine to use, so that the luminous efficiency of LED straight lamp can be promoted further.

Figure 16 A, 17A, 18A, 19A and 20A embodiment installation detecting module teaching installation detecting module include for example examine Survey pulse generating module 2540,2740 and 3040, pulse generation auxiliary circuit 2840 and signal generation unit 2940 etc. to The pulse generation mechanism of pulse signal is generated, but the pulse of the utility model generates means and is not limited only to this.Implement in an example In example, installation detecting module can use the existing frequency signal of power module to replace the pulse generation mechanism of previous embodiment Function.For example, driving circuit (such as DC-DC converter) lights control with impulse waveform to generate Signal processed itself just has a reference frequency.And the function of the pulse generation mechanism can use to refer to and light control The reference frequency of signal is implemented, so that detection pulse generating module 2540,2740 and 3040, pulse generation auxiliary circuit 2840 And the equal hardware circuits of signal generation unit 2940 can be omitted.In other words, installation detecting module can in power module Other parts share circuit framework, thus realize generate pulse signal function.In addition to this, the utility model embodiment Pulse duty factor caused by pulse generation means may be greater than any value in 0 (normally closed) to less than section equal to 1, It is specific to be arranged depending on actual installation detecting mechanism.

Wherein, if pulse signal duty ratio caused by pulse generation means is set greater than 0 and when less than 1, installation is detectd Surveying module is the letter through temporary turn-on power circuit/detection path and during conducting on detecting electric power loop/detection path Number mode, to judge whether fluorescent tube is correctly installed under the premise of not causing shock hazard, and determine fluorescent tube it is correct When on installation to lamp holder (both ends pin is all correctly connect with lamp holder socket), current limliting means are switched to closing/forbidden energy state (for example, switching circuit is made to be switched to conducting), LED module is normally lit.Herein under setting, the current limliting hand Section can be preset as starting/enable state (for example, switching circuit is made to be preset as ending), and then before confirming oncontacting risk (that is, fluorescent tube is correctly installed) enables electric power loop maintain by cut-off/current limliting state (that is, LED module can not be by point at this time It is bright), and current limliting means can be just switched to closing/forbidden energy state after determining that fluorescent tube is correctly installed.Such configuration can Referred to as pulse detection setting (duty ratio is set greater than 0 and less than 1).Under pulse detection setting, installation detecting is dynamic Work is to carry out (that is, LED module is not yet lit at this time) during the enable of each pulse after external plant-grid connection, at this time Specific protection against electric shock means are through " when determining that fluorescent tube is correctly installed just without current limliting " Lai Shixian.

If pulse signal duty ratio caused by pulse generation means be 1, installation detecting module can in real time/constantly The signal on electric power loop/detection path is detected, to change as the basis for judging equivalent impedance, and in judgement equivalent impedance When instruction has personnel's electric shock risk, current limliting means are switched to unlatching/enable state and (are cut for example, being switched to switching circuit Only), and then fluorescent tube is enabled to power off.Herein under setting, the current limliting means can be preset as closing/forbidden energy state (for example, making to hold Powered-down road is preset as being connected), and then before confirmation has electric shock risk, enable electric power loop be maintained at current limliting switched on/non- State (that is, LED module can be lit at this time), and there may be Shi Caihui by current limliting means determining really to have electric shock risk It is switched to unlatching/enable state.Such configuration can be referred to as persistently detecting setting (duty ratio is set as 1).Described lasting Under detecting setting, installation detecting movement is after external plant-grid connection, and no matter whether fluorescent tube lights the progress that can all continue, at this time Specific protection against electric shock means are through " having electric shock risk to carry out current limliting immediately when occurring when determining " Lai Shixian.

Further, as long as the risk of electric shock is to be possible to generate when fluorescent tube either end accesses external power supply, such as Shown in Figure 21, no matter installation personnel is the installation or removal for carrying out fluorescent tube, as long as hand touches the current-carrying part i.e. meeting of fluorescent tube Installation personnel is set to be exposed to the risk of electric shock.In order to avoid such risk, in the present embodiment, no matter whether fluorescent tube is in by point Bright state, the installation detecting module can all be set in the case of fluorescent tube has external power supply access according to the pulse detection Fixed or lasting detecting setting to carry out comprehensive detecting and protection to installation situation and electric shock situation so that fluorescent tube using safe Property can be promoted further.

It is attached to one in this to be mentioned that, under the application of lasting detecting setting, the pulse, which generates means, also can be considered all the way Diameter enable means are to come turn-on power circuit/detection path to the default open signal that provides.Herein under, In one exemplary embodiment, the detection pulse generating module 2540,2740 and 3040 of previous embodiment, pulse generate auxiliary circuit 2840 and signal generation unit 2940 circuit framework corresponding can be revised as provide fixed voltage circuit framework.In addition, Switching circuit 2580,2680,2780,2880,2960 and 3080 switch logics corresponding can be revised as being preset as being connected, and Cut-off (can by adjusting the logic gate of testing result latch cicuit to realize) when being determined with electric shock risk.Implement in another example In example, through the setting of adjustment detection decision circuit and detection path circuit, the circuit framework to generate pulse can be saved Slightly.For example, the installation detecting module of the first preferred embodiment can only include testing result latch cicuit 2560, detect and sentence Determine circuit 2570 and switching circuit 2580, the installation detecting module of the second preferred embodiment can be latched only comprising testing result Circuit 2760, detection decision circuit 2770 and switching circuit 2780, the configurations of other preferred embodiments can and so on.This Outside, it under the framework for being provided with additional detections path, is set according to lasting detecting, then detecting pulse generating module 3040 can To be omitted, and detects path circuit 3090 and can be set to maintain on state (such as omitting transistor 3092).

Figure 22 A is referred to, Figure 22 A is the power module according to the LED straight lamp of the tenth preferred embodiment of the utility model Apply block schematic diagram.Compared to Figure 12 A, the LED straight lamp of the present embodiment include rectification circuit 510, filter circuit 520, Driving circuit 2530, LED module 630, and more increase circuit for detecting 2620.Rectification circuit 510, filter circuit 520, driving circuit Connection relationship between 2530 and LED module 630 is repeated no more as described in earlier figures 12A embodiment in this.The present embodiment Circuit for detecting 2620 has input terminal and output end, and input terminal is coupled on the electric power loop of LED straight lamp, and its output end Couple driving circuit 2530.

Specifically, being driven after the LED straight lamp of the present embodiment is powered (either correctly installation or incorrect installation) Dynamic circuit 2530 can be preset into an installation sense mode.In the case where installing sense mode, driving circuit 2530 can be provided with narrow The control signal of lighting of pulse (such as pulse width is less than 1ms) carrys out driving power switch (not being painted), so that driving circuit 2530 in the case where installing sense mode generated driving current be less than 5MIU or 5mA.On the other hand, in the case where installing sense mode, Circuit for detecting 2620 can detect the electric signal on electric power loop, and generate an installation detection signal according to the result detected Sidm returns to driving circuit 2530.Wherein, driving circuit 2530 understands the installation detection signal Sidm according to receiving to determine Whether normal driving mode is entered.If the judgement of driving circuit 2530 maintains installation sense mode, driving circuit 2530 can be according to According to setpoint frequency output there is lighting for burst pulse to control the of short duration conducting power switch of signal, so that circuit for detecting 2620 can The electric signal on electric power loop is detected, and at the same time the electric current on electric power loop is enabled to be smaller than under entirely installation sense mode 5MIU.Conversely, driving circuit 2530 can be changed to according to input electricity if driving circuit 2530 determines to enter normal driving mode Pressure, output voltage and output electric current etc. information at least one or combination light control signal generate adjustable variable pulse width.

2B referring to figure 2., Figure 22 B are to be illustrated according to the circuit of the driving circuit of the 5th preferred embodiment of the utility model Figure.The driving circuit 2530 of the present embodiment includes controller 2531 and conversion circuit 2532, and wherein controller 2531 includes letter Number receiving unit 2533, sawtooth wave generate unit 2534 and comparing unit 2536, and conversion circuit 2532 includes switch electricity Road (alternatively referred to as power switch) 2535 and accumulator 2538.The input terminal of signal receiving unit 2533 receives feedback signal Vfb and installation detection signal Sidm, and the first input of the output end coupling comparing unit 2536 of signal receiving unit 2533 End.Sawtooth wave generates the second input terminal of the output end coupling comparing unit 2536 of unit 2534.The output of comparing unit 2536 End is coupled to the control terminal of switching circuit 2535.Relative configuration and practical electricity between switching circuit 2535 and accumulator 2538 Road example is as described in earlier figures 12A-12B and 12G-12J, and in this, it is no longer repeated.

In controller 2531, signal receiving unit 2533 can be for example the circuit as composed by error amplifier, can It is provided to receive the feedback signal Vfb of the voltage correlated in power module, electric current information, and by circuit for detecting 2620 Installation detection signal Sidm.In embodiment, signal receiving unit 2533 can select defeated according to installation detection signal Sidm Out a predeterminated voltage Vp or feedback signal Vfb to comparing unit 2536 first input end.It is to use that sawtooth wave, which generates unit 2534, To generate the second input terminal of a sawtooth signal Ssw to comparing unit 2536, wherein the sawtooth signal Ssw is each at its In the signal waveform in period, rising edge and at least one of slope of failing edge are non-for infinity.In addition, the sawtooth of the present embodiment No matter wave, which generates unit 2534, can be the working frequency that the operation of driving circuit 2530 is all fixed in what mode with one to produce Raw sawtooth signal Ssw, or sawtooth signal Ssw can be generated according to different working frequencies under different operation modes (also that is, sawtooth wave generate unit 2534 can according to installation detection signal Sidm change its working frequency), the utility model not with This is limited.Comparing unit 2536 can compare the signal level on first input end and the second input terminal, and in first input end On signal level when being greater than the signal level on the second input terminal, export high level lights control signal Slc, and the When signal level on one input terminal is not more than the signal level on the second input terminal, output is low level to light control signal Slc.In other words, comparing unit 2536 can be greater than predeterminated voltage Vp or feedback signal Vfb in the signal level of sawtooth signal Ssw Signal level during export high level, and then generate there is impulse form lighting control signal Slc.

It is the power module according to the utility model third preferred embodiment please with reference to Figure 22 B and Figure 23 C, Figure 23 C Signal sequence schematic diagram.It (installs to lamp holder or one end and installs to lamp holder other end quilt in both ends after LED straight lamp is powered User accidentally touch), driving circuit 2530 can be activated, and it is default ground entrance installation sense mode DTM.It is beneath with the period 1 Running in T1 is illustrated, and in the case where installing sense mode, signal receiving unit 2533 can export predeterminated voltage Vp to comparing The first input end of unit 2536, and sawtooth wave generates unit 2534 and also starts to generate sawtooth signal Ssw to comparing unit 2536 the second input terminal.From the point of view of the signal level variation of sawtooth wave SW, the signal level of sawtooth wave SW can driving circuit It is gradually increasing after the 2530 time point ts being activated from initial level, and has been gradually decreased down again after reaching peak level Beginning level.Before the signal level of sawtooth wave SW rises to predeterminated voltage Vp, comparing unit 2536 can export low level point Bright control signal Slc；It is increased over after predeterminated voltage Vp in the signal level of sawtooth wave SW to being dropped back to again lower than default In a period of before voltage Vp, comparing unit 2536 can will light control signal Slc and be pulled to high level；And in sawtooth wave After the signal level of SW once again falls below predeterminated voltage Vp, comparing unit 2536 will can be lighted again under control signal Slc It is pulled to low level.It is operated by the comparison, comparing unit 2536 can generate arteries and veins based on sawtooth wave SW1 and predeterminated voltage Vp DP is rushed, wherein DPW is the signal level of sawtooth wave SW higher than during predeterminated voltage Vp during the pulse of the pulse DP.

The control terminal lighted control signal Slc and can be transferred to switching circuit 2535 with pulse DP, so that switch electricity Road 2535 can be connected in DPW during pulse, and then make 2538 energy storage of energy-storage units, and driving is generated on electric power loop Electric current.It changes since the generation of driving current will lead to the signal characteristics such as signal level/waveform/frequency of electric power loop, Therefore circuit for detecting 2620 can detect sampled signal Ssp generation level change SP at this time.Wherein, circuit for detecting 2620 can be into one Step judges whether this level change SP has more than a reference voltage Vref.In period 1 T1, not yet due to level change SP More than reference voltage Vref, therefore circuit for detecting 2620 can export corresponding installation detection signal Sidm to signal receiving unit 2533 so that signal receiving unit 2533 is continuously maintained at installation sense mode DTM, and continue export predeterminated voltage Vp to than Compared with unit 2536.It is whole since the level change of sampled signal Ssp is similar with period 1 T1 in second round T2 Circuit operation it is identical as the running in period 1 T1, therefore it is no longer repeated.

In other words, in period 1 T1 and second round T2, LED straight lamp can be judged as not yet correctly installing.Separately It is outer incidentally one to be mentioned that, in this case, although driving circuit 2530 can generate driving current on electric power loop, because The turn-on time relative brevity of switching circuit 2535, therefore the current value of driving current will not do harm to huamn body and (be less than 5mA/MIU, can be down to 0).

After entering period 3 T3, circuit for detecting 2620 judges that the level change of sampled signal Ssp has been more than with reference to electricity Vref is pressed, therefore has issued corresponding installation detection signal Sidm to signal receiving unit 2533, has used indication LED straight lamp It is properly installed to lamp holder.It is detectd when signal receiving unit 2533 receives the installation that indication LED straight lamp has been properly installed After surveying signal Sidm, driving circuit 2530 can enter normal driving mould from installation sense mode DTM after period 3 T3 Formula DRM.In the period 4 T4 under normal driving mode DRM, signal receiving unit 2533 can be changed to receive according to from outside Feedback signal Vfb generate corresponding signal to comparing unit 2536, allow comparing unit 2536 according to input voltage, Information such as output voltage, driving current and dynamically adjusting light the pulse width of control signal Slc, and then make LED module can To be lit and maintain the brightness of setting.At normal driving mode DRM, circuit for detecting 2620 can stop operating, or Continued operation but signal receiving unit 2533 ignore installation detection signal Sidm, and the utility model is not limited.

Generally speaking, with regard to the power module of the present embodiment (the 13rd preferred embodiment) and aforementioned 12nd preferred embodiment Power module for, difference is that the present embodiment is that installation detecting with the circuit of protection against electric shock and function is integrated into driving electricity Lu Zhong, so that driving circuit becomes with protection against electric shock and install the driving circuit of detecting function.More specifically, the present embodiment Power module only needs the circuit for detecting (2620) of electric signal of the setting one to detect electric power loop to can allow driving circuit 2530 effect acts come the installation detecting for realizing LED straight lamp and protection against electric shock, due to not needing to detect wherein just like aforementioned installation Survey the complexity electricity that module includes detection pulse generating module, testing result latch cicuit, detection decision circuit and switching circuit etc. Road design, therefore the design cost of whole power module can be effectively reduced.In addition to this, due to the reduction of circuit member, make The layout for obtaining power module is able to bigger space, and consumption power is also lower, this helps to be used for input power more Light in LED module, so improve light efficiency, while also allow reduce power module caused by heat.2C referring to figure 2., Figure 22 C is The application circuit block schematic diagram of the power module for the LED straight lamp that one preferred embodiment of the utility model provides.The present embodiment The power module of offer is suitable for the power supply of LED straight lamp, and LED straight lamp includes light-emitting diode (LED) module (i.e. LED module 630), The power module includes: rectification circuit 510, filter circuit 520, driving circuit 1530, detection decision circuit 3170, control circuit 3160 and current-limiting circuit 3180, wherein the input terminal of rectification circuit 510 inputs external drive signal, and rectification circuit 510 is for defeated The output end of the rectified signal obtained after external drive signal is rectified out and the input terminal of filter circuit 520, filtering Circuit 520 is used to export rectified signal is filtered after the obtained output end of filtered signal and driving circuit 1530 Input terminal be connected, driving circuit is used to export the output end and light emitting diode of the driving signal obtained according to filtered signal Module is connected, and wherein rectification circuit 510, filter circuit 520 and driving circuit 1530 are configured to make the signal of output in same electricity It circulates on resource loop；Detect decision circuit 3170 couple electric power loop, and detect the target sampled signal on electric power loop with Generate testing result signal；Control circuit 3160 coupling detection decision circuit 3170 output end to receive testing result signal, And corresponding control signal is generated according to the signal characteristic of testing result signal, wherein signal characteristic indicates whether electric shock risk In the presence of；Current-limiting circuit 3180 couples control circuit 3160 and electric power loop, to receive control signal, and believes in response to control Number and decide whether to electric power loop execute current-limiting operation,

Wherein, current-limiting circuit 3180 is preset as not executing the circuit mode of current-limiting operation；

Wherein, it is determined with when control circuit 3160 according to the signal characteristic of testing result signal in the presence of electric shock risk, limit Current circuit is switched to the circuit mode for executing current-limiting operation, uses the electricity enabled on electric power loop in response to the control of control signal Ductility limit is flow to lower than safe current value；And

In the presence of control circuit 3160 determines oncontacting risk according to the signal characteristic of testing result signal, current-limiting circuit 3180 do not execute the circuit mode of current-limiting operation in response to the control maintenance of control signal.

Specifically, in the present embodiment, installation detecting module 2720 is configured as continuing signal on detecting electric power loop Framework, wherein installation detecting module 2720 includes control circuit 3160, detection decision circuit 3170 and current-limiting circuit 3180. Control circuit 3160 is used to control current-limiting circuit 3180 according to testing result caused by detection decision circuit 3170 It enables current-limiting circuit 3180 react on the control of control circuit 3160 and decides whether to execute current-limiting operation.Wherein, control circuit 3160 meeting default control current-limiting circuits 3180 do not execute current-limiting operation, that is, the electric current on electric power loop is default not by current limliting The limitation of circuit 3180.Therefore, under preset state, as long as there is external power supply access, the power supply after rectifying and wave-filtering all may be used LED module 630 is provided to via electric power loop.

More specifically, detection decision circuit 3170 can be by external power supply starting/enable, and start constantly detecting electricity Signal (target sampled signal) in resource loop in specific node, and will test consequential signal and send control circuit 3160 to. Control circuit 3160 understands the one of them of the level of signal, waveform, frequency and other characteristics of signals or more persons according to testing result To determine whether there is personnel to touch situation.When control circuit 3160 has personnel to touch situation according to testing result signal determining When generation, i.e., it can control current-limiting circuit 3180 and execute current-limiting operation, so that the electric current on electric power loop is restricted to lower than specific Current value avoids situation of getting an electric shock hereinafter, using.In this it should be noted that the specific node can be situated in rectification circuit 510, the input side or outlet side of filter circuit 520, driving circuit 1530 or LED module 630, the utility model not as Limit.In addition, current-limiting circuit 3180 can also be placed in rectification circuit 510, filter circuit 520, driving circuit 1530 or LED module 630 input side or outlet side, the utility model is to this without limiting.

2D referring to figure 2., Figure 22 D are the power supply mould according to the LED straight lamp of the 11st preferred embodiment of the utility model Block applies block schematic diagram.The concretely voltage comparator of decision circuit 3170 is detected in the present embodiment.

2E referring to figure 2., Figure 22 E are the power supply mould according to the LED straight lamp of the 12nd preferred embodiment of the utility model Block applies block schematic diagram.Compared to power module provided by above-described embodiment, power module provided in this embodiment is also It include: detection path circuit 3290, detection decision circuit 3170 detects the mesh on electric power loop by detection path circuit 3290 Sampled signal is marked to generate testing result signal, wherein the input terminal of detection path circuit 3290 inputs target sampled signal, inspection The output end for surveying path circuit 3290 is connected with the input terminal of detection decision circuit 3170, and detection path circuit 3290 is used for mesh Output extremely detection decision circuit 3170 after mark sampled signal is converted.

Specifically, the substantially phase of installation detecting module 2720 of the installation detecting module 2820 and previous embodiment of the present embodiment Together, the two main difference is that installing detecting module 2820 is configured as continuing the framework of signal on detecting detection path.Peace Filling detecting module 2820 includes control circuit 3260, detection decision circuit 3270, current-limiting circuit 3280 and detection path circuit 3290, wherein can refer to about the running of control circuit 3260, detection decision circuit 3270 and current-limiting circuit 3280 above-mentioned The explanation of Figure 22 D embodiment, in this, it is no longer repeated.

In this it should be noted that the detection path circuit 3290 can be set rectification circuit 510, filter circuit 520, The input side or outlet side of driving circuit 1530 or LED module 630, the utility model are not limited.In addition to this, road is detected Diameter circuit 3290 can use passive device (such as resistance, capacitor, inductance) or active member (such as crystal in practical applications Pipe, silicon control rectifier) etc. it is any can touch in response to human body and reflect the circuit configuration of impedance variations implement.

Generally speaking, the power module of above-mentioned Figure 22 D and Figure 22 E belongs to the application and configuration under lasting detecting setting, Can be separately as the mechanism of installation detecting, or collocation can be set with pulse detection together as the mechanism of installation detecting.Citing For, in an exemplary embodiment, fluorescent tube can be set in the state of non-lit up using pulse detection, and in fluorescent tube quilt It is changed to after lighting using lasting detecting setting.From the perspective of circuit running, the pulse detection setting and lasting detecting The switching of setting, which can be based on the electric current on electric power loop, to be determined, such as the electric current on electric power loop is less than particular value When (such as 5MIU), installation detecting module is that selection enables pulse detection setting, and the electric current on electric power loop is greater than specific When value, installation detecting module is switched to the lasting detecting setting of enabling.It installs from fluorescent tube with from the perspective of running, mould is detected in installation Block is to be preset as enabling pulse detection setting, when so that fluorescent tube being powered each time or receives external power supply, installs detecting module All first detect that electrocution-proof protection is correctly installed and carried out to fluorescent tube whether with pulse detection setting, once determine that fluorescent tube is correctly installed On to lamp holder and after lighting, installation detecting module, which is switched to, to be set with lasting detecting to detect whether fluorescent tube is accidentally touched conductive part Divide and generates electric shock risk.In addition, pulse detection setting can be reset to again by installing detecting module if fluorescent tube power-off.

In addition one is attached to be mentioned that, in the description of this case, although the name of property functional for each modules/circuits, Those skilled in the art is it should be appreciated that according to different circuit designs, and same circuit unit, which can be considered, different functions, also I.e. different modules/circuits may can share same circuit unit to realize its other circuit function.Therefore the function of this case Energy life name is not limited to specific circuit unit and is only capable of including in specific modules/circuits, first chats in this conjunction bright.

In conclusion above-mentioned Figure 15 has been taught in the way of being controlled electronically with detecting to 20B embodiment realizes anti-touching The concept of electric protection.For using technology of the mechanical structure actuation to carry out protection against electric shock, due to electronic type control with The problem of method for detecting will not be with the presence of mechanical fatigue, therefore can have using the electrocution-proof protection that electronic signal carries out fluorescent tube Preferable reliability and service life.

In power module design, the external drive signal can be low-frequency ac signal (such as: alternating current is mentioned For), high frequency ac signal (such as: electric ballast is provided) or direct current signal (such as: battery provides or external driving Power supply), and LED straight lamp can be inputted with the driving framework of Double-End Source.In the driving framework of Double-End Source, can support only Use wherein one end to receive external drive signal in a manner of single ended power supply.

When direct current signal is as external drive signal, the power module of LED straight lamp can be omitted rectification circuit.

In the rectification circuit design of power module, the first rectification unit and the second rectification unit point in double rectification circuits Pin not with configuration in the both ends lamp cap of LED straight lamp couples.Double rectification units are suitable for the driving framework of Double-End Source.And And when being configured with an at least rectification unit, it can be adapted for the driving of low-frequency ac signal, high frequency ac signal or direct current signal Environment.

Double rectification units can be double half-wave rectification circuit, double full-wave rectifying circuits or half-wave rectifying circuit and full-wave rectification The combination of circuit each one.

In the pin design of LED straight lamp, each single pin (totally two pins) of both-end, each double pins of both-end can be The framework of (totally four pins).Under the framework of each single pin of both-end, it is applicable to the rectification circuit design of single rectification circuit. Under the framework of each double pins of both-end, it is applicable to the rectification circuit design of double rectification circuits, and uses each any pin of both-end Or any single-ended double pins receive external drive signal.

In the filter circuit design of power module, Single Capacitance or π type filter circuit can have, after filtering out rectification Radio-frequency component in signal, and the direct current signal for providing low ripple is filtered signal.Filter circuit also may include LC filtering Circuit, high impedance is presented to specific frequency, to meet the size of current specification to specific frequency.Furthermore filter circuit more may be used Comprising the filter unit being coupled between pin and rectification circuit, electromagnetic interference caused by the circuit to reduce LED light.Straight When flowing signal as external drive signal, the power module of LED straight lamp can be omitted filter circuit.

In the LED illumination module design of power module, only comprising LED module or LED module and driving can be included Circuit.It can also be by voltage regulator circuit and LED illumination wired in parallel, to ensure the unlikely generation over-voltage of the voltage in LED illumination module. Voltage regulator circuit can be voltage clamping circuit, such as: Zener diode, bi-directional voltage stabilizing pipe etc..When rectification circuit includes condenser network, A capacitor can be connected two-by-two between in a pin of the pin and the other end respectively held for both-end, to carry out with condenser network Partial pressure effect and as voltage regulator circuit.

In the design for only including LED module, when high frequency ac signal is as external drive signal, an at least rectified current Road include condenser network (that is, including more than one capacitor), in rectification circuit all-wave or half-wave rectifying circuit connect, make Condenser network is equivalent to impedance as current regulating circuit and to adjust the electric current of LED module under high frequency ac signal.Whereby, When the high frequency ac signal of the provided different voltages of different electric ballasts, the electric current of LED module be can be adjusted default It is unlikely in current range that there is a situation where overcurrents.Energy circuit is released furthermore it is possible to additionally increase, it is in parallel with LED module, in outside Driving signal stops after providing, and auxiliary carries out filter circuit to release energy, to reduce caused by filter circuit or other circuits Resonance causes the case where LED module flashing.In comprising LED module and driving circuit, driving circuit can be direct current and turn DC boosting conversion circuit, DC to DC decompression converting circuit or DC to DC go up and down voltage conversion circuit.Driving circuit system Stablizing the electric current of LED module in setting electric current value, can also be turned up according to the high or low of external drive signal to correspond to Or turn down setting electric current value.Furthermore it is possible to additionally increase mode selector switch between LED module and driving circuit, make electric current LED module is directly inputted by filter circuit or inputs LED module after overdrive circuit.

Furthermore it is possible to increase protection circuit additionally to protect LED module.Protection circuit can detect the electric current of LED module And/or voltage starts corresponding overcurrent or overvoltage protection to correspond to.

In the auxiliary power module design of power module, energy-storage units can be battery or super capacitor, with LED module It is in parallel.Auxiliary power module is suitable for inclusion in the LED illumination module design of driving circuit.

In the LED module design of power module, LED module may include the multi-string LED component being connected in parallel to each other (that is, single The LED group of one LED chip or multiple and different color LED chips composition) it goes here and there, the LED component in each LED component string can be each other It connects and forms netted connection.

That is, features described above can be made to arbitrary permutation and combination, and it is used for the improvement of LED straight lamp.

Note that above are only the preferred embodiment and institute's application technology principle of the utility model.Those skilled in the art's meeting Understand, the utility model is not limited to specific embodiment described here, is able to carry out for a person skilled in the art various bright Aobvious variation, readjustment and substitution is without departing from the protection scope of the utility model.Therefore, although passing through above embodiments The utility model is described in further detail, but the utility model is not limited only to above embodiments, is not departing from It can also include more other equivalent embodiments in the case that the utility model is conceived, and the scope of the utility model is by appended Scope of the claims determine.

Claims

1. a kind of power module is suitable for the power supply of LED straight lamp, the LED straight lamp includes light-emitting diode (LED) module, feature It is, the power module includes: rectification circuit, filter circuit, driving circuit, detection decision circuit, control circuit and current limliting Circuit, wherein the input terminal of the rectification circuit inputs external drive signal, and the rectification circuit is for exporting the outside The output end for the rectified signal that driving signal obtains after being rectified is connected with the input terminal of filter circuit, the filter circuit For export the rectified signal is filtered after the obtained output end of filtered signal and the driving circuit it is defeated Enter end to be connected, the driving circuit is used to export the output end and the hair of the driving signal obtained according to the filtered signal Optical diode module is connected, wherein the rectification circuit, the filter circuit and the drive circuitry arrangement are the letter for making output It number circulates on same electric power loop；

The detection decision circuit couples the electric power loop, and detects the target sampled signal on the electric power loop to produce Biopsy surveys consequential signal；

The control circuit couples the output end of the detection decision circuit to receive the testing result signal, and according to described The signal characteristic of testing result signal generates corresponding control signal, wherein the signal characteristic indicates whether that electric shock risk is deposited ?；

The current-limiting circuit couples the control circuit and the electric power loop, to receive the control signal, and responds Decide whether to execute current-limiting operation to the electric power loop in the control signal,

Wherein, it is determined with when the control circuit according to the signal characteristic of the testing result signal in the presence of electric shock risk, institute Current-limiting circuit is stated in response to the control of the control signal, the circuit mode for executing the current-limiting operation is switched to, uses and enable institute Current limitation on electric power loop is stated to being lower than safe current value；And

In the presence of the control circuit determines oncontacting risk according to the signal characteristic of the testing result signal, the current limliting Circuit maintains the circuit mode for not executing the current-limiting operation in response to the control of the control signal.

2. power module according to claim 1, which is characterized in that further include: detection path circuit, the detection determine Circuit detects the target sampled signal on the electric power loop by the detection path circuit to generate testing result signal, In, the input terminal of the detection path circuit inputs the target sampled signal, the output end of the detection path circuit and institute The input terminal for stating detection decision circuit is connected, and the detection path circuit is for defeated after being converted the target sampled signal Out to the detection decision circuit.

3. a kind of LED straight lamp, including fluorescent tube and two lamp caps, two lamp cap are set to the lamp tube ends, and described two At least provided with the first pin on one of lamp cap, at least provided with the second pin, the LED on two lamp cap is wherein another Straight lamp receives external drive signal by first pin and second pin characterized by comprising as right is wanted Seek 1 or 2 any power modules.

4. LED straight lamp according to claim 3, which is characterized in that further include: auxiliary power module, the auxiliary electricity Source module receives the external drive signal, and passes through first pin and second pin at least one connection The power module, wherein the auxiliary power module provides accessory power supply when the external drive is signal-powered abnormal to institute State power module.

5. LED straight lamp according to claim 4, which is characterized in that when the external drive is signal-powered normal, institute State the input terminal that external drive signal is provided to the rectification circuit by first pin and second pin, and institute External drive signal is stated to charge to the auxiliary power module；It is described auxiliary and when the external drive is signal-powered abnormal Power module is helped to cut off the circuit between the external drive signal and the rectification circuit, the auxiliary power module provides auxiliary Help power supply to the input terminal of the rectification circuit.

6. LED straight lamp according to claim 5, which is characterized in that the auxiliary power module, comprising:

Switch unit, has first end, second end and third end, and first end receives the external drive signal, its second end Connect the rectification circuit input terminal, wherein the switch unit first end and second end constitute the first current supply circuit, institute The second end and third end for stating switch unit constitute the second current supply circuit, and the conducting of the switch unit selectivity described first supplies One of electrical circuit and second current supply circuit；

Auxiliary power unit, output end connect the third end of the switch unit, for providing the auxiliary from its output end Power supply；And

Charhing unit, input terminal receive the external drive signal, and output end connects the input of the auxiliary power unit End, wherein the charhing unit is used to be that the auxiliary power unit charges by the external drive signal；

Wherein, when the external drive is signal-powered normal, the first current supply circuit described in the switching means conductive simultaneously ends Second current supply circuit；And when the external drive is signal-powered abnormal, the switch unit cut-off described first is supplied Simultaneously second current supply circuit is connected in electrical circuit.

7. LED straight lamp according to claim 4, which is characterized in that when the external drive is signal-powered normal, institute State the input terminal that external drive signal is provided to the rectification circuit by the auxiliary power module, and the external drive Signal charges to the auxiliary power module；And when the external drive is signal-powered abnormal, the auxiliary power module The accessory power supply of itself is provided to the input terminal of the rectification circuit.

8. LED straight lamp according to claim 7, which is characterized in that the auxiliary power module, comprising:

Auxiliary power unit, has first input end, the second input terminal and output end, and first input end receives the external drive Dynamic signal, output end connect the input terminal of the rectification circuit, wherein the auxiliary power unit from its output end for mentioning For the accessory power supply；And

Charhing unit, input terminal receive the external drive signal, and output end connects the second of the auxiliary power unit Input terminal, wherein the charhing unit is used to be that the auxiliary power unit charges by the external drive signal,

Wherein, when the external drive is signal-powered normal, the external drive that the auxiliary power unit will receive Signal is provided to the input terminal of the rectification circuit；And when the external drive is signal-powered abnormal, the auxiliary power supply Unit generates the input terminal that the accessory power supply is provided to the rectification circuit.

9. LED straight lamp according to claim 4, which is characterized in that the auxiliary power module, comprising: energy-storage units, Transformer, switching switch, first diode, first capacitor, sampling module and chip control module, wherein

The energy-storage units include cathode output end and cathode output end；

The source electrode of the switching switch is connected and is grounded with the cathode output end, the grid and the chip of the switching switch The output end of control module is connected；

The Same Name of Ends of transformer, the primary side winding component of the transformer is connected with the electrode input end, the primary side winding The different name end of component is connected with the drain electrode of the switching switch, the Same Name of Ends and the electricity of the vice-side winding component of the transformer The input terminal of the rectification input circuit of source module is connected；

The anode of first diode, the first diode is connected with the different name end of the vice-side winding component, and the described 1st The cathode of pole pipe is connected with the input terminal of the rectification input circuit of the power module；

First capacitor, the first end of the first capacitor are connected with the Same Name of Ends of the vice-side winding component, the first capacitor Second end be connected with the input terminal of the cathode of the first diode and the sampling module；

10. LED straight lamp according to claim 9, which is characterized in that the chip control module, comprising: power supply, core Piece, the second capacitor, first resistor, second resistance, the second diode and 3rd resistor, the chip include discharge end, triggering end, Power end and output end, wherein

The discharge end is connected with the first end of the first resistor, the second end of the triggering end and the first resistor, institute The first end for stating the first end of second resistance, the first end of the 3rd resistor and second capacitor is connected, the power supply End is connected with the second end of the second resistance and the power supply, the second end of the 3rd resistor and second diode Cathode be connected, second diode anode be connected with the output end of sampling module, second capacitor second terminate Ground；

The sampling module includes: tertiary winding component, third diode, third capacitor and the 4th resistance, wherein described The anode of three diodes is connected with the different name end of the tertiary winding component；The first end of the third capacitor and the third around The Same Name of Ends of group component and the first end of the 4th resistance are connected, the second end of the third capacitor and the three or two pole The input terminal of the cathode of pipe, the second end of the 4th resistance and the chip control module is connected.

11. LED straight lamp according to claim 9, which is characterized in that the chip control module, comprising: power supply, core Piece, the second capacitor, first resistor and second resistance, the chip include discharge end, triggering end, power end and output end, wherein

The discharge end is connected with the first end of the first resistor, the second end of the triggering end and the first resistor, institute The first end of the first end and second capacitor of stating second resistance is connected, and the of the power end and the second resistance Two ends and the power supply are connected, the second end ground connection of second capacitor；

The photoelectrical coupler includes photodiode and triode, the anode of the photodiode and the first capacitor Second end is connected, and the cathode of the photodiode is connected with the first end of the 5th resistance, and the three of the photoelectrical coupler The collector of pole pipe is electrically connected with the second end of the second resistance, the emitter of the triode of the photoelectrical coupler with it is described The first end of second resistance is electrically connected；The second end of 5th resistance is electrically connected with the first end of the pincers pressure component, described The second end of pincers pressure component is electrically connected with the first end of the first capacitor.

12. LED straight lamp described in 0 or 11 according to claim 1, which is characterized in that the chip control module, further includes: Third capacitor and the 4th capacitor, the chip further include reset terminal and control terminal, wherein