CN207124784U

CN207124784U - A kind of circuit and LED straight lamps for installing detecting module

Info

Publication number: CN207124784U
Application number: CN201720491686.8U
Authority: CN
Inventors: 熊爱明; 刘新通
Original assignee: Jiaxing Super Lighting Electric Appliance Co Ltd
Current assignee: Jiaxing Super Lighting Electric Appliance Co Ltd
Priority date: 2016-01-22
Filing date: 2016-12-07
Publication date: 2018-03-20
Anticipated expiration: 2026-12-07

Abstract

The utility model proposes a kind of circuit and LED straight lamps for installing detecting module.The circuit of the installation detecting module is configured in the LED straight lamps, for detecting the installment state of the LED straight lamps and lamp socket, the installation detecting module includes detecting pulse generating module, testing result latch cicuit, on-off circuit and detection decision circuit, wherein：The detecting pulse generating module is electrically connected with the testing result latch cicuit；And it is electrically connected with the output of the testing result latch cicuit；The testing result latch cicuit is electrically connected with the on-off circuit；One end of LED straight lamp electric power loops and the detection decision circuit is electrically connected in the on-off circuit；The on-off circuit, the other end of LED straight lamp electric power loops and the testing result latch cicuit is electrically connected in the detection decision circuit.

Description

A kind of circuit and LED straight lamps for installing detecting module

The application is the Application No. 201621344288.5 submitted on December 7th, 2016, a kind of entitled LED straight The divisional application of the utility application of spot.

Technical field

It the utility model is related to field of lighting appliances, and in particular to a kind of circuit and LED straight tubes for installing detecting module Lamp.

Background technology

LED illumination technology 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 lamps need not filling mercury.The advantages of LED straight lamps the durability comprising lifting and Life-span and compared with low power consuming.Accordingly, it is considered to after all factors, application that LED straight lamps will be more and more extensive.

Known LED straight lamps generally comprise fluorescent tube, in fluorescent tube and the circuit board with light source, and located at fluorescent tube two The lamp holder at end, lamp holder is interior to be provided with power supply, is electrically connected between light source and power supply by circuit board.

And when LED straight lamps use Double-End Source, if one of both-end of LED straight lamps lamp holder has inserted lamp socket And the other end is when not yet inserting lamp socket, if user touches the metal for being not inserted into lamp socket end or conductive part, it is possible to The risk of generation electric shock.To solve the problem, in scheme disclosed in patent CN106015996A, a kind of LED straight lamps are disclosed, LED drive module in its lamp includes a detecting module, flows through LED straight lamps to decide whether to end external drive signal, The detecting module has one first sense terminal and one second sense terminal, when flowing through the one of the first sense terminal and the second sense terminal When electric current is greater than or equal to a current value, detecting module conducting makes LED straight lamps operate in a conducting state；Detectd when flowing through first When one electric current of survey end and the second sense terminal is less than above-mentioned current value, detecting module cut-off makes LED straight lamps not led into one Logical state.For electronic circuit, it is preferably capable of that there is relatively simple control logic and control circuit, therefore above-mentioned side Case still leaves some room for improvement and necessity.

In view of above mentioned problem, the utility model set forth below and embodiment.

The content of the invention

Many embodiments of the summary description herein on " the utility model ".But the vocabulary " the utility model " is only For some embodiments (in spite of in claim) for describing to disclose in this description, rather than it is possible to Embodiment complete description.The some embodiments for being described below as each feature or aspect of " the utility model " can not With mode independence or merge to form a LED straight lamps or a portion.

To solve the above problems, the utility model provides following technical scheme：

A kind of circuit for installing detecting module, is configured in a LED straight lamps, for detecting the LED straight lamps and lamp socket Installment state, for detecting the installment state of the LED straight lamps and lamp socket, the installation detecting module includes：Detect pulse Generation module, testing result latch cicuit, on-off circuit and detection decision circuit, wherein：The detecting pulse generating module The testing result latch cicuit and the on-off circuit are electrically connected with, to produce an at least pulse signal；And it is electrically connected with The output of the testing result latch cicuit, to control the time of disabling pulse signal；The testing result latch cicuit is electrical The on-off circuit is connected, to receive and export the pulse signal that detecting pulse generating module is exported；The on-off circuit point Not electricity Xing Lianjie LED straight lamp electric power loops one end and the detection decision circuit, latched to receive the testing result Pulse signal that circuit is exported simultaneously turns on during the pulse signal, the conducting of LED straight lamps electric power loop；The detection is sentenced Determine circuit and the on-off circuit, the other end of LED straight lamp electric power loops and testing result latch is electrically connected Circuit, when on-off circuit turns on LED power loop, to detect the sampled signal on electric power loop to judge LED straight tubes The installment state of lamp and lamp socket.

Alternatively, the detecting pulse generating module includes：6th resistance, one end connect a driving voltage；4th electric capacity, One end connects the other end of the 6th resistance, and the other end ground connection of the 4th electric capacity；Schmitt trigger, there is an input and one Output end, the input connect the connection end of the 6th resistance and the 4th electric capacity, and the output end connects the testing result and latches electricity Road；7th resistance, one end connect the connection end of the 6th resistance and the 4th electric capacity；Second transistor, there is a base terminal, a collector End and an emitter-base bandgap grading end, the collector terminal connect the other end of the 7th resistance, emitter-base bandgap grading end ground connection；8th resistance, one end connection second The base terminal of transistor, the other end connect the testing result latch cicuit and on-off circuit.

Alternatively, the detecting pulse generating module also includes：Zener diode, there is an anode tap and a cathode terminal, The anode tap is grounded, and the cathode terminal connects one end that the 4th electric capacity is connected with the 6th resistance.

Alternatively, the resistance value of the 6th resistance and the capacitance of the 4th electric capacity, make the detecting pulse generation The time interval of pulse signal caused by module is 3ms to 500ms.

Alternatively, the resistance value of the 6th resistance and the capacitance of the 4th electric capacity, make the detecting pulse generation The time interval of pulse signal caused by module is 20ms to 50ms.

Alternatively, the capacitance of the 4th electric capacity and the resistance value of the 7th resistance, make the detecting pulse generation The width of pulse signal caused by module is 1us to 100us.

Alternatively, the capacitance of the 4th electric capacity and the resistance value of the 7th resistance, make the detecting pulse generation The width of pulse signal caused by module is 10us to 20us.

Alternatively, the testing result latch cicuit includes：Second D flip-flop, there is a data input pin, a frequency Input and an output end, the data input pin connect the driving voltage, and the frequency input connects the detection decision circuit； 3rd OR gate, has a first input end, one second input and an output end, and the first input end connects the Shi Mite and touched The output end of device is sent out, second input connects the output end of the second D flip-flop, and described in the output end connection of the 3rd OR gate The other end of resistance and the on-off circuit.

Alternatively, the on-off circuit includes：Third transistor, there is a base terminal, a collector terminal and an emitter-base bandgap grading end, should Base terminal connects the output end of the 3rd OR gate, and the one end in collector terminal connection LED power loop, the emitter-base bandgap grading end connects the detection Decision circuit.

Alternatively, the on-off circuit includes：FET, there is a base terminal, a collector terminal and an emitter-base bandgap grading end, the base The output end of the 3rd OR gate of extreme connection, the one end in collector terminal connection LED power loop, the emitter-base bandgap grading end connection detection are sentenced Determine circuit.

Alternatively, the detection decision circuit includes：9th resistance, first end connect the emitter-base bandgap grading end of third transistor, and The other end in the other end connection LED power loop of the 9th resistance；Second comparator, there is a first input end, one second defeated Enter end and an output end, the first input end connects a setting signal, and second input connects the first of the 9th resistance End, and the output end of the second comparator connects the frequency input of the second D flip-flop.

Alternatively, the detection decision circuit includes：9th resistance, first end connect the emitter-base bandgap grading end of third transistor, and The other end in the other end connection LED power loop of the 9th resistance；Second diode, there is an anode tap and a cathode terminal, should Anode tap connects one end of the 9th resistance；Second comparator, there is a first input end, one second input and an output end, The first input end connects a setting signal, the cathode terminal of second input the second diode of connection, and the second comparator Output end connects the frequency input of the second D flip-flop；3rd comparator, there is a first input end, one second input With an output end, the first input end connects the cathode terminal of the second diode, and second input connects another setting signal, and The output end of 3rd comparator connects the frequency input of the second D flip-flop；Tenth resistance, one end connection driving voltage；The 11 resistance, one end connect the other end of the tenth resistance and the second input of the second comparator, other end ground connection；5th electricity Hold, with the 11st resistor coupled in parallel.

Alternatively, the resistance value of the 9th resistance is between 0.1 ohm to 5 ohm.

Alternatively, the detecting pulse generating module includes：6th resistance, one end connect a driving voltage；4th electric capacity, One end connects the other end of the 6th resistance, and the other end ground connection of the 4th electric capacity；Schmitt trigger, there is an input and one Output end, the input connect the connection end of the 6th resistance and the 4th electric capacity, and the output end connects the testing result and latches electricity Road；7th resistance, one end connect the connection end of the 6th resistance and the 4th electric capacity；Second transistor, there is a base terminal, a collector End and an emitter-base bandgap grading end, the collector terminal connect the other end of the 7th resistance, emitter-base bandgap grading end ground connection；8th resistance, one end connection second The base terminal of transistor, the other end connect the testing result latch cicuit and on-off circuit；Zener diode, there is an anode End and a cathode terminal, anode tap ground connection, the cathode terminal connect one end that the 4th electric capacity is connected with the 6th resistance；It is also, described Schmitt trigger, the testing result latch cicuit and second comparator, the 3rd comparator are integrated positioned at one In circuit.

A kind of LED straight lamps, there is Double-End Source construction for electricity, have in the LED straight lamps in the utility model The circuit of detecting module is installed.

According to the technical solution of the utility model, by configuring installation detecting module in LED straight lamps, installation is reduced The volume of detecting module, or the precision, one or both that detection judges can be greatly enhanced and had concurrently, and then reduce and occur to touch The risk of electric (leakage current).The utility model more has above-mentioned non-usual optional mode to have further effect will be under It is illustrated in text with reference to embodiment.

Brief description of the drawings

Fig. 1 is a section plan, and the lamp plate for showing the LED straight lamps of the utility model embodiment is bendable circuit Soft board and its end gets over the transition part of fluorescent tube and is welded to connect with the output end of power supply；

Fig. 2 is a stereogram, show the utility model embodiment LED straight lamps lamp plate bendable circuit soft board with The printed circuit board (PCB) of power supply is combined into a circuit board assemblies；

Fig. 3 is a stereogram, shows another configuration of Fig. 2 circuit board assemblies；

Fig. 4 A are to be illustrated according to the application circuit square of the power supply module of the LED straight lamps of the utility model embodiment Figure；

Fig. 4 B are to be illustrated according to the application circuit square of the power supply module of the LED straight lamps of the utility model embodiment Figure；

Fig. 4 C are to be illustrated according to the application circuit square of the power supply module of the LED straight lamps of the utility model embodiment Figure；

Fig. 4 D are the circuit box schematic diagram according to the LED of the utility model embodiment；

Fig. 4 E are the circuit box schematic diagram according to the LED of the utility model embodiment；

Fig. 5 A are the circuit box schematic diagram according to the filter circuit of the utility model embodiment；

Fig. 5 B are the circuit diagram according to the filter unit of the utility model embodiment；

Fig. 5 C are the circuit diagram according to the filter unit of the utility model embodiment；

Fig. 6 A are the application circuit block schematic diagram according to the power supply module of the LED of the utility model embodiment；

Fig. 6 B are the circuit box schematic diagram according to the drive circuit of the utility model embodiment；

Fig. 6 C are the circuit diagram according to the drive circuit of the utility model embodiment；

Fig. 6 D are the circuit diagram according to the drive circuit of the utility model embodiment；

Fig. 6 E are the circuit diagram according to the drive circuit of the utility model embodiment；

Fig. 6 F are the circuit diagram according to the drive circuit of the utility model embodiment；

Fig. 7 A are to be illustrated according to the application circuit square of the power supply module of the LED straight lamps of the utility model embodiment Figure；

Fig. 7 B are the circuit diagram according to the overvoltage crowbar of the utility model embodiment；

Fig. 8 A are to be illustrated according to the application circuit square of the power supply module of the LED straight lamps of the utility model embodiment Figure；

Fig. 8 B are to be illustrated according to the application circuit square of the power supply module of the LED straight lamps of the utility model embodiment Figure；

Fig. 9 A are to be illustrated according to the application circuit square of the power supply module of the LED straight lamps of the utility model embodiment Figure；

Fig. 9 B are the circuit diagram according to the installation detecting module of the utility model embodiment；

Fig. 9 C are the circuit diagram according to the detection pulse generating module of the utility model embodiment；

Fig. 9 D are the circuit diagram according to the detection decision circuit of the utility model embodiment；

Fig. 9 E are the circuit diagram according to the testing result latch cicuit of the utility model embodiment；

Fig. 9 F are the circuit diagram according to the on-off circuit of the utility model embodiment；

Fig. 9 G are the circuit diagram according to the installation detecting module of the utility model embodiment；

Fig. 9 H are the circuit diagram according to the detection pulse generating module of the utility model embodiment；

Fig. 9 I are the circuit diagram according to the detection decision circuit of the utility model embodiment；

Fig. 9 J are the circuit diagram according to the testing result latch cicuit of the utility model embodiment；

Fig. 9 K are the circuit diagram according to the on-off circuit of the utility model embodiment.

Embodiment

The utility model is on the basis of glass lamp, it is proposed that a kind of new LED straight lamps, to solve in background technology The problem of mentioning and above mentioned problem.It is understandable to enable above-mentioned purpose of the present utility model, feature and advantage to become apparent, under Face is described in detail with reference to accompanying drawing to specific embodiment of the utility model.The narration of following various embodiments of the utility model is only It is to be illustration to illustrate, is not meant as whole embodiments of the present utility model or the utility model is limited to specific reality Apply example.

Need to first illustrate in addition, 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 area Art personnel can design together according to demand from be about to feasible implementation example collocation, 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, also include in the case of feasible, the band between each embodiment/components/modules changes and permutation and combination, in this conjunction First chat bright.

Though applicant in previous case, such as:In CN105465640A, it is proposed that reached using flexible circuit board Into the improvement mode for reducing electric leakage accident, section Example can with present application be combined using circuit mode will have it is more significant Effect.

If both ends of the lamp plate 2 along the axial direction of fluorescent tube 1 are not fixed on the inner peripheral surface of fluorescent tube 1, if connected using wire, It is follow-up move during, because both ends are free, easily shaken during follow-up move, thus make it possible to wire It is broken.Therefore the connected mode prioritizing selection of lamp plate 2 and power supply 5 is welding.Specifically, reference picture 1, can be directly by lamp Plate 2 is welded in the output end of power supply 5 after getting over the transition region 103 of strengthening section structure, is removed the use of wire from, is improved product Stability.

In addition, in the pin design of LED straight lamps, it can be each single pin (totally two pins) of both-end, can also be The framework of each double pins (totally four pins) of both-end.So entering from the both-end of LED straight lamps in the situation of electricity, can use double Each at least pin in end is typically referred to as Line to receive the wire set between each pin of this both-end of external drive signal Or Neutral wires, and available for the input and transmission of signal.

Fig. 2 and Fig. 3 are refer to, in other embodiments, the above-mentioned lamp plate 2 and power supply 5 fixed through welding manner It can be substituted with the circuit board group component 25 for being equipped with power supply module 250.Circuit board group component 25 has a long He of circuit board 251 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 the long adjacent peripheral edges of circuit board 251.There is power supply module 25 on short circuit board 253, be monolithically fabricated power supply.The short material of circuit board 253 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 institutes The line layer 2a shown.The mode of line layer 2a and power supply module 250 electrical connection of lamp plate 2 can have different according to actual use situation Electric connection mode.As shown in Fig. 2 the circuit that will be electrically connected with power supply module 250 and long circuit board 251 with power supply module 250 Layer 2a is all located at the same side of short circuit board 253, and power supply module 250 is directly electrically connected with long circuit board 251.As shown in figure 3, The line layer 2a systems being electrically connected with power supply module 250 are located at short circuit board respectively on power supply module 250 and long circuit board 251 253 both sides, power supply module 250 penetrate the line layer 2a electrical connections of too short circuit board 253 and lamp plate 2.

Fig. 4 A are referred to, are the application circuit side according to the power supply module of the LED straight lamps of the utility model embodiment Block schematic diagram.The system of AC power 508 is providing ac supply signal.AC power 508 can be civil power, voltage range 100- 277V, frequency are 50 or 60Hz.Lamp tube drive circuit 505 receives the ac supply signal of AC power 508, and is converted into exchanging Drive signal is to be used as external drive signal.Lamp tube drive circuit 505 can be electric ballast, the signal of civil power to be turned Change into high frequency, the alternating current drive signal of high pressure.The species of common electronicses 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., LED straight lamps of the present utility model are applicable.The voltage of alternating current drive signal is more than 300V, preferable voltage Scope is 400-700V；Frequency is more than 10kHz, and preferable frequency range is 20k-50kHz.LED straight lamps 500 receive external drive Signal, in the present embodiment, external drive signal are the alternating current drive signal of lamp tube drive circuit 505, and are driven to emit light. In the present embodiment, LED straight lamps 500 are the driving framework of single ended power supply, same one end lamp holder of fluorescent tube have the first pin 501, Second pin 502, to receive external drive signal.First pin 501, the second pin 502 of the present embodiment couple (that is, electric Connection or direct or indirect connection) 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 508 couples with the first pin 501, the second pin 502.Now, the first pin 501st, the second pin 502 receives the ac supply signal that AC power 508 is provided, to be used as external drive signal.

In addition to the application of above-mentioned single ended power supply, LED straight lamps 500 of the present 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. 4 B, figure 4B is the application circuit block schematic diagram according to the power supply module of the LED straight lamps of the utility model embodiment.Compared to figure Shown in 4A, first pin 501, the second pin 502 of the present embodiment are respectively placed in the relative both-end of fluorescent tube of LED straight lamps 500 For lamp holder to form each single pin of both-end, the connection of remaining circuit and function are then identical with circuit shown in Fig. 4 A.The double pins of both-end Circuit structure refers to Fig. 4 C, and Fig. 4 C are the application electricity according to the power module of the LED straight lamps of the utility model embodiment Road block schematic diagram.Compared to shown in Fig. 4 A and 8B, the present embodiment also includes the 3rd pin 503 and the 4th pin 504.Fluorescent tube One end lamp holder has the first pin 501, the second pin 502, and other end lamp holder has the 3rd pin 503, the 4th pin 504.The One pin 501, the second pin 502, the 3rd pin 503 and the 4th pin 504 are coupled to lamp tube drive circuit 505 to receive jointly Alternating current drive signal, to drive the LED component (not shown) in LED straight lamps 500 to light.

Under the circuit structure of the double pins of both-end, both-end list pin enters electrically, or both-end double pins enter electricity side Formula, configuring to realize the power supply of fluorescent tube for adjustment power module can be passed through.Wherein, under the entering electrically of both-end list pin (that is, both ends lamp holder respectively give opposed polarity external drive signal), in an exemplary embodiment, both-end lamp holder can have respectively One pin is that sky connects/suspension joint, for example, the second pin 502 and the 3rd pin 503 can be it is empty connect the/state of suspension joint, make fluorescent tube saturating Cross the first pin 501 and the 4th pin 504 receives external drive signal, use and make the power module inside fluorescent tube carry out follow-up Rectification and filter action；In another exemplary embodiment, the pin of both-end lamp holder can distinguish short circuit together, such as first connects Pin 501 is together with the short circuit of the second pin 502 on the lamp holder of the same side, and the 3rd pin 503 and the on the lamp holder of the same side The short circuit of four pin 504 together, so can receive positive polarity or negative pole also with the first pin 501 and the second pin 502 Property external drive signal, and using the external drive signal of the 3rd pin 503 and the 4th pin 504 reception opposite polarity, Use and make the power module inside fluorescent tube carry out follow-up rectification and filter action.Under the entering electrically of the double pins of both-end (i.e., Two pins of the same side lamp holder give the external drive signal of opposed polarity respectively), in an exemplary embodiment, the first pin 501 and second pin 502 can receive the external drive signal of opposite polarity, and the 3rd pin 503 can connect with the 4th pin 504 The external drive signal of opposite polarity is received, uses and makes the power module inside fluorescent tube carry out follow-up rectification and filter action.

Then, Fig. 4 D are referred to, are the circuit box schematic diagram according to the LED of the utility model embodiment.LED Power module mainly include the first rectification circuit 510 and filter circuit 520, the portion of LED illumination module 530 can also be included Subassembly.First rectification circuit 510 couples the first pin 501, the second pin 502, to receive external drive signal, and to outside Drive signal carries out rectification, then exports rectified signal by the first rectification output end 511, the second rectification output end 512.Herein External drive signal can be Fig. 4 A and the alternating current drive signal or ac supply signal in Fig. 4 B, be possibly even direct current Operation of the signal without influenceing LED.Filter circuit 520 couples with first rectification circuit, to enter to rectified signal Row filtering；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 522 exports filtering after then being filtered by output end 521, second after the first filtering Signal afterwards.LED illumination module 530 couples with filter circuit 520, with signal after accepting filter and lights；That is LED illumination module After output end 521, second filters after 530 the first filtering of coupling then output end 522 drives LED to shine with signal after accepting filter LED component (not shown) in bright module 530 lights.The explanation of embodiment after this part please refer to.

Fig. 4 E are referred to, are the circuit box schematic diagram according to the LED of the utility model embodiment.The electricity of LED Source module mainly includes rectification circuit 510 ', filter circuit 520 and LED illumination module 530, and it is equally applicable to Fig. 4 C Double-End Source framework.The difference of the present embodiment and earlier figures 4E embodiments is that rectification circuit 510 ' can have three inputs End can be directed to and be connect from each pin 501~503 to be respectively coupled to the first pin 501, the second pin 502 and the 3rd pin 503 The signal that arrives carries out rectification, wherein the 4th pin 504 can be suspension joint or with the short circuit of the 3rd pin 503, therefore the present embodiment can be with Omit the configuration of the second rectification circuit 540.Remaining circuit running is roughly the same with Fig. 4 E, therefore does 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 ripple, and then according to the first rectification circuit during practical application 510th, between 530 each circuit of filter circuit 520 and LED illumination module signal transmission increase in demand or reduction, i.e., between each circuit It can be one or more to couple end points.

Each embodiment of the power module of LED shown in Fig. 4 D to Fig. 4 E and the power module of following LED, except suitable Outside for the LED straight lamps shown in Fig. 4 A to Fig. 4 C, the illuminating circuit framework for transmitting electric power comprising two pins, example Such as：The lamp socket of a variety of illuminating lamps such as bulb lamp, PAL lamps, intubation electricity-saving lamp (PLS lamps, PLD lamps, PLT lamps, PLL lamps etc.) Specification is applicable.For bulb lamp embodiment the present embodiment can with CN105465630A or CN105465663 structures Implementation is arranged in pairs or groups use together so that protection against electric shock it is better.

When the energized structural of LED straight lamps 500 of the present utility model application at least single pin of both-end, could be adapted so The lamp socket comprising lamp tube drive circuit or ballast 505 (such as electric ballast or Inductive ballast) is installed on afterwards, and is applicable Change in bypass ballast 505 by AC power 508 (such as civil power) to power.

Fig. 5 A are referred to, are the circuit box schematic diagram according to the filter circuit of the utility model embodiment.Painted in figure Go out the first rectification circuit 510 only to represent annexation, not filter circuit 520 includes the first rectification circuit 510.Filtered electrical Road 520 includes filter unit 523, the first rectification output end 511 and the second rectification output end 512 is coupled, to receive rectification circuit The rectified signal exported, and export filtered signal after filtering out the ripple in rectified signal.Therefore, filtered signal Waveform is smoother compared with the waveform of rectified signal.Filter circuit 520 also can also include filter unit 524, be coupled to rectification circuit And between corresponding pin, such as：First rectification circuit 510 and the first pin 501, the first rectification circuit 510 and the second pin 502nd, the second rectification circuit 540 and the 3rd pin 503 and the second rectification circuit 540 and the 4th pin 504, to specific frequency It is filtered, to filter out the specific frequency of external drive signal.In the present embodiment, filter unit 524 is coupled to the first pin 501 Between the first rectification circuit 510.Filter circuit 520 also can also include filter unit 525, be coupled to the first pin 501 and Two pins 502 one of them between the diode of one of the first rectification circuit 510 or the 3rd pin 503 and the 4th pin 504 one of them and the second rectification circuit 540 diodes of one of them, to reduce or filter out electromagnetic interference (EMI).At this Embodiment, filter unit 525 is coupled to the first pin 501 (schemes not with the diode of one of them with the first rectification circuit 510 Show) between.Because 524 and 525 visual practical situations of filter unit add or omit, Gu Tuzhong is represented by dotted lines it.

Fig. 5 B are referred to, are the circuit diagram according to the filter unit of the utility model embodiment.Filter unit 623 Include an electric capacity 625.One end of electric capacity 625 couples the first rectification output end 511 and the first filtering output end 521, other end coupling The second rectification output end 512 and the second filtering output end 522 are connect, with to by the first rectification output end 511 and the second rectification output The rectified signal of 512 outputs carries out LPF, and filtered signal is formed to filter out the radio-frequency component in rectified signal, Then exported by the first filtering output end 521 and the second filtering output end 522.

Fig. 5 C are referred to, are the circuit diagram according to the filter unit of the utility model embodiment.Filter unit 723 For π type filter circuits, electric capacity 725, inductance 726 and electric capacity 727 are included.One end of electric capacity 725 couples the first rectification output end 511 simultaneously couple the first filtering output end 521 by inductance 726 simultaneously, and the second rectification output end of other end coupling 512 and second is filtered Wave output terminal 522.Inductance 726 is coupled between the first rectification output end 511 and the first filtering output end 521.The one of electric capacity 727 End is by first rectification output end of the coupling of inductance 726 511 and couples the first filtering output end 521 simultaneously, other end coupling second The filtering output end 522 of rectification output end 512 and second.

From the point of view of on equivalent, filter unit 723 inductance 726 and electric capacity 727 compared with the filter unit more than 623 shown in Fig. 5 B.And And inductance 726 and electric capacity 727 have LPF effect also with as electric capacity 725.Therefore the filter unit 723 of the present embodiment is compared In the filter unit 623 shown in Fig. 5 B, there is more preferably high frequency to filter out ability, the waveform of the filtered signal exported is more flat It is sliding.

The inductance value of inductance 726 in above-described embodiment is preferably the scope selected from 10nH~10mH.Electric capacity 625,725,727 Capacitance be preferably selected from 100pF~1uF scope.

Fig. 6 A are referred to, are to be shown according to the application circuit square of the power supply module of the LED of the utility model embodiment It is intended to.Compared to shown in Fig. 4 C, the power supply module of the LED of the present embodiment include the first rectification circuit 510, filter circuit 520, Drive circuit 1530, wherein drive circuit 1530 and LED module 630 composition LED illumination module 530.Drive circuit 1530 is straight Circulate DC converting circuit, couples the first filtering output end 521 and the second filtering output end 522, with signal after accepting filter, and Electrical power conversion is carried out to export in the first drive output 1521 and the second driving so that filtered signal is converted into drive signal The output of end 1522.LED module 630 couples the first drive output 1521 and the second drive output 1522, to receive driving letter Number and light, the electric current of preferably LED module 630 is stable at a setting electric current value.Fig. 6 B are referred to, are according to the utility model The circuit box schematic diagram of the drive circuit of embodiment.Drive circuit includes controller 1531 and change-over circuit 1532, with electricity The pattern in stream source carries out electrical power conversion, to drive LED module to light.Change-over circuit 1532 includes on-off circuit 1535 and energy storage Circuit 1538.The first filtering output end 521 of coupling of change-over circuit 1532 and the second filtering output end 522, signal after accepting filter, And according to the control of controller 1531, it is converted into drive signal and by the first drive output 1521 and the second drive output 1522 outputs, to drive LED module.Under the control of controller 1531, the drive signal that change-over circuit 1532 is exported is steady Determine electric current, and make LED module stabilized illumination.

Fig. 6 C are referred to, are the circuit diagram according to the drive circuit of the utility model embodiment.In the present embodiment, Drive circuit 1630 is decompression DC to-DC switching circuit, and comprising controller 1631 and change-over circuit, and change-over circuit includes Inductance 1632, fly-wheel diode 1633, electric capacity 1634 and switching switch 1635.The coupling of drive circuit 1,630 first filtering output The filtering output end 522 of end 521 and second, drive signal is converted into by the filtered signal of reception, and first is coupled in driving LED module between the drive output 1522 of drive output 1521 and second.

In the present embodiment, switching switch 1635 is metal-oxide half field effect transistor, has control terminal, first end and second End.The positive pole of the first end coupling fly-wheel diode 1633 of switching switch 1635, the second end couple the second filtering output end 522, Control terminal coupling controller 1631 is made between first end and the second end on or off with receiving the control of controller 1631.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.Electric capacity 1634 be coupled to the first drive output 1521 and Between second drive output 1522, to stablize the voltage between the first drive output 1521 and the second drive output 1522 Difference.The negative terminal of fly-wheel diode 1633 couples the first drive output 1521.

Next the running of explanation drive circuit 1630.

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, control and switch the dutycycle (Duty Cycle) for switching 1635 to adjust the size of drive signal.Current sense is believed Number S535 systems represent the size of current for flowing through switching switch 1635.The representative of current sense signal S531 systems, which flows through, is coupled to the first drive The size of current of LED module between the dynamic drive output 1522 of output end 1521 and second.According to current sense signal S531 And S535 any, controller 1631 can obtain the information for the electric power size that change-over circuit is changed.When switching switch 1635 During conducting, the electric current of filtered signal is flowed into by the first filtering output end 521, and passes through the drive output of electric capacity 1634 and first 1521 to being flowed out by the second filtering output end 522 after LED module, inductance 1632, switching switch 1635.Now, electric capacity 1634 and Inductance 1632 carries out energy storage.When switching 1635 cut-off of switch, inductance 1632 and electric capacity 1634 discharge stored energy, electric current Make LED module still continuous illumination to the first drive output 1521 through the afterflow of fly-wheel diode 1633.

It is worth noting that, 1634 inessential component of electric capacity and can omit, therefore be represented by dotted lines in figure.Should at some With environment, electricity can be omitted to reach the effect of stable LED module electric current by the characteristic of the change of inductance meeting resistive Hold 1634.

Again from the point of view of another angle, drive circuit 1630 passes through LED module electric current and remained unchanged, therefore for part For LED module (such as:The LED module such as white, red, blueness, green), the situation that colour temperature changes with size of current is i.e. 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 is being cut Release stored energy when changing the cut-off of switch 1635, on the one hand causes LED module to keep continuous illumination, on the other hand also causes Current Voltage on LED module will not rapid drawdown to minimum, and when switching switch 1635 turns on again, Current Voltage is just not required to Come and gone from minimum to maximum, thereby, avoid LED module from discontinuously lighting and improve the overall brightness of LED module and reduce most Low turn-on cycle and raising driving frequency.

Fig. 6 D are referred to, are the circuit diagram according to the drive circuit of the utility model embodiment.In the present embodiment, Drive circuit 1730 is voltage boosting dc to-DC switching circuit, and comprising controller 1731 and change-over circuit, and change-over circuit includes Inductance 1732, fly-wheel diode 1733, electric capacity 1734 and switching switch 1735.Drive circuit 1730 will be exported by the first filtering The filtered signal that the filtering output end 522 of end 521 and second is received is converted into drive signal, and the first driving is coupled in driving LED module between the drive output 1522 of output end 1521 and second.

One end of inductance 1732 couples the first filtering output end 521, the positive pole of other end coupling filter stream diode 1733 and The first end of switching switch 1735.The second end coupling the second filtering output end 522 of switching switch 1735 and the second driving output End 1522.The negative pole of fly-wheel diode 1733 couples the first drive output 1521.Electric capacity 1734 is coupled to the first driving output Between the drive output 1522 of end 1521 and second.

The control terminal of the coupling switching of controller 1731 switch 1735, 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 1735 conducting of switch, electric current is defeated by the first filtering Go out end 521 to flow into, and flowed out after flowing through inductance 1732, switching switch 1735 by the second filtering output end 522.Now, electricity is flowed through The electric current of sense 1732 increases with the time, and inductance 1732 is in energy storage state.Meanwhile electric capacity 1734 is in de-energized state, to continue Driving LED module lights.When switching 1735 cut-off of switch, 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 electric capacity 1734 and LED module through the afterflow of fly-wheel diode 1733.Now, electric capacity 1734 are in energy storage state.

It is worth noting that, electric capacity 1734 is omissible component, it is represented by dotted lines.Electric capacity 1734 omit situation, During switching 1735 conducting of switch, the electric current of inductance 1732 is not passed through LED module and LED module is not lighted；Switching switch 1735 During cut-off, the electric current of inductance 1732 flows through LED module through fly-wheel diode 1733 and LED module is lighted.By control LED moulds The fluorescent lifetime of block and the size of current flowed through, the mean flow rate that can reach LED module is stable in setting value, and reaches phase The effect of same stabilized illumination.

Again from the point of view of another angle, drive circuit 1730 passes through LED module electric current and remained unchanged, therefore for part For LED module (such as:The LED module such as white, red, blueness, green), the situation that colour temperature changes with size of current is i.e. 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 is being cut Release stored energy when changing the cut-off of switch 1735, on the one hand causes LED module continuous illumination, on the other hand also causes LED Current Voltage in module will not rapid drawdown to minimum, and when switching switch 1735 turns on again, Current Voltage be just not required to from Minimum comes and goes maximum, thereby, avoids LED module from discontinuously lighting and improve the overall brightness of LED module and reduce minimum Turn-on cycle and raising driving frequency.

Fig. 6 E are referred to, are the circuit diagram according to the drive circuit of the utility model embodiment.In the present embodiment, Drive circuit 1830 is decompression DC to-DC switching circuit, and comprising controller 1831 and change-over circuit, and change-over circuit includes Inductance 1832, fly-wheel diode 1833, electric capacity 1834 and switching switch 1835.The coupling of drive circuit 1,830 first filtering output The filtering output end 522 of end 521 and second, drive signal is converted into by the filtered signal of reception, and first is coupled in driving LED module between the drive output 1522 of drive output 1521 and second.

The first end of switching switch 1835 couples the first filtering output end 521, the second end coupling fly-wheel diode 1833 Negative pole, and control terminal coupling controller 1831 is made between first end and the second end with receiving the control signal of controller 1831 State is on or off.The positive pole of fly-wheel diode 1833 couples the second filtering output end 522.One end of inductance 1832 is with cutting 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 positive pole of diode 1833.Electric capacity 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 switching switch 1835 conducting when, electric current is flowed into by the first filtering output end 521, through switching switch 1835, Inductance 1832 and after the drive output 1521 of electric capacity 1834 and first, LED module and the second drive output 1522 by Two filtering output ends 522 flow out.Now, the voltage of the electric current and electric capacity 1834 that flow through inductance 1832 increases with the time, inductance 1832 and electric capacity 1834 be in energy storage state.When switching 1835 cut-off of switch, inductance 1832 is in de-energized state, inductance 1832 Electric current reduced with the time.Now, the electric current of inductance 1832 is defeated through the first drive output 1521, LED module and the second driving Go out end 1522, fly-wheel diode 1833 returns inductance 1832 and forms afterflow.

It is worth noting that, electric capacity 1834 is represented by dotted lines for that can omit component in schema.When electric capacity 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.

Again from the point of view of another angle, drive circuit 1830 passes through LED module electric current and remained unchanged, therefore for part For LED module (such as:The LED module such as white, red, blueness, green), the situation that colour temperature changes with size of current is i.e. 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 is being cut Release stored energy when changing the cut-off of switch 1835, on the one hand causes LED module to keep continuous illumination, on the other hand also causes Current Voltage on LED module will not rapid drawdown to minimum, and when switching switch 1835 turns on again, Current Voltage is just not required to Come and gone from minimum to maximum, thereby, avoid LED module from discontinuously lighting and improve the overall brightness of LED module and reduce most Low turn-on cycle and raising driving frequency.

Fig. 6 F are referred to, are the circuit diagram according to the drive circuit of the utility model embodiment.In the present embodiment, Drive circuit 1930 is decompression DC to-DC switching circuit, and comprising controller 1931 and change-over circuit, and change-over circuit includes Inductance 1932, fly-wheel diode 1933, electric capacity 1934 and switching switch 1935.The coupling of drive circuit 1,930 first filtering output The filtering output end 522 of end 521 and second, drive signal is converted into by the filtered signal of reception, and first is coupled in driving LED module between the drive output 1522 of drive output 1521 and second.

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.Second end of 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 positive pole coupling inductance of fly-wheel diode 1933 1932 switch 1935 tie point with switching, and negative pole couples the first drive output 1521.The driving of the coupling of electric capacity 1,934 first is defeated Go out the drive output 1522 of end 1521 and second, the first drive output 1521 and the second drive output are coupled to stable 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 switching switch 1935 conducting when, electric current is flowed into by the first filtering output end 521, and flow through inductance 1932, Flowed out after switching switch 1935 by the second filtering output end 522.Now, flow through the electric current of inductance 1932 increases with the time, inductance 1932 are in energy storage state；The voltage of electric capacity 1934 is reduced with the time, and electric capacity 1934 is in de-energized state, to maintain LED module It is luminous.When switching 1935 cut-off of switch, inductance 1932 is in de-energized state, and the electric current of inductance 1932 is reduced with the time.Now, The electric current of inductance 1932 is through fly-wheel diode 1933, the first drive output 1521, LED module and the second drive output 1522 Return inductance 1932 and form afterflow.Now, electric capacity 1934 is in energy storage state, and the voltage of electric capacity 1934 increases with the time.

It is worth noting that, electric capacity 1934 is represented by dotted lines for that can omit component in schema.When electric capacity 1934 omits, During switching 1935 conducting of switch, the electric current of inductance 1932 is not flow through the first drive output 1521 and the second drive output 1522 and LED module is not lighted.During switching 1935 cut-off of switch, the electric current of inductance 1932 flows through through fly-wheel diode 1933 LED module and LED module is lighted.By the size of current for controlling the fluorescent lifetime of LED module and flowing through, LED can be reached The mean flow rate of module is stable in setting value, and has the function that identical stabilized illumination.

Again from the point of view of another angle, drive circuit 1930 passes through LED module electric current and remained unchanged, therefore for part For LED module (such as:The LED module such as white, red, blueness, green), the situation that colour temperature changes with size of current is i.e. 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 is being cut Release stored energy when changing the cut-off of switch 1935, on the one hand causes LED module continuous illumination, on the other hand also causes LED Current Voltage in module will not rapid drawdown to minimum, and when switching switch 1935 turns on again, Current Voltage be just not required to from Minimum comes and goes maximum, thereby, avoids LED module from discontinuously lighting and improve the overall brightness of LED module and reduce minimum Turn-on cycle and raising driving frequency.

Coordinate Fig. 2 and Fig. 3, short circuit board 253 be distinguished into the first short circuit board for being connected with the long both ends of circuit board 251 and Second short circuit board, and the first short circuit board of short circuit board 253 that the electronic building brick in power supply 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 be able to can also be differed with rough consistent Cause.Typically, the first short circuit board (left side circuit of the right-hand circuit board of Fig. 2 short circuit board 253 and Fig. 3 short circuit board 253 Plate) length dimension for the second short circuit board length dimension 30%~80%.The length ruler of more preferably first short circuit board The 1/3~2/3 of the very little length dimension for being 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 (specifically regard application scenario and It is fixed).In the lamp holder of one end that the first short circuit board is arranged at LED straight lamps, and to be arranged at LED straight for the second short circuit board In the lamp holder of the relative other end of spot.

For example, drive circuit electric capacity (such as：Electric capacity 1634 in Fig. 6 C to Fig. 6 F, 1734,1834, it is 1934) real Border application can be above that two or more electric capacity is formed in parallel.The electric capacity of drive circuit is at least partially or fully in power supply module It is arranged on the first short circuit board of short circuit board 253.That is, rectification circuit, filter circuit, the inductance of drive circuit, controller, Switching switch, diode etc. may be contained within the second short circuit board of short circuit board 253.And inductance, controller, switching switch etc. For the higher component of temperature in electronic building brick, it is arranged at from part or all of electric capacity on different circuit boards, electric capacity can be made (especially It is electrochemical capacitor) avoid because the higher component of temperature impacts to the life-span of electric capacity, improve electric capacity reliability.Further, also It can be spatially separated from because of electric capacity and rectification circuit and filter circuit, solve the problems, such as EMI.

As described above, the electronic building brick of power supply module may be provided on the circuit board on lamp plate or in lamp holder.In order to increase The advantages of power supply module, some of which electric capacity can use patch capacitor (such as ceramic paster electric capacity) in embodiment, and it is set Put on the circuit board on lamp plate or in lamp holder.But the patch capacitor being set as is in use because piezo-electric effect can be sent Obvious noise, influence comfortableness when client uses.In order to solve this problem, in the LED straight lamps of this exposure, can lead to Cross immediately below patch capacitor and suitable hole or groove are set, this can change patch capacitor and exist with carrying the circuit board of patch capacitor The vibrational system formed under piezo-electric effect is so that substantially reduce sent noise.The shape at the edge or periphery of this hole or groove Can be approximate for example circular, ellipse or rectangle, and in the circuit board in the conductive layer or lamp holder in lamp plate, and in paster The lower section of electric capacity.

Fig. 7 A are referred to, are the application circuit side according to the power supply module of the LED straight lamps of the utility model embodiment Block schematic diagram.Compared to Fig. 4 C illustrated embodiments, the LED straight lamps of the present embodiment include the first rectification circuit 510, filter circuit 520 and LED illumination module 530, and also increase overvoltage crowbar 1570.The coupling of overvoltage crowbar 1,570 first filtering output The filtering output end 522 of end 521 and second, to detect filtered signal, and it is higher than setting overpressure value in the level of filtered signal When, the level of strangulation filtered signal.Therefore, overvoltage crowbar 1570 can protect the component of LED illumination module 530 not because Cross high pressure and damage.

Fig. 7 B are referred to, are the circuit diagram according to the overvoltage crowbar of the utility model embodiment.Overvoltage is protected Protection circuit 1670 includes voltage-regulator diode 1671, such as：Zener diode (Zener Diode), couple the first filtering output end 521 and second filtering output end 522.Voltage-regulator diode 1671 is in the first filtering output end 521 and the second filtering output end 522 Voltage difference (that is, the level of filtered signal) turns on when reaching breakdown voltage, makes voltage difference strangulation on breakdown voltage.Collapse electricity Pressure is preferably in the range of 40-100V, more preferably 55-75V scope.

Fig. 8 A are referred to, are the application circuit side according to the power module of the LED straight lamps of the utility model embodiment Block schematic diagram.Compared to Fig. 4 C illustrated embodiments, the LED straight lamps of the present embodiment include the first rectification circuit 510 and filtered electrical Road 520, and also increase auxiliary power module 2510, the wherein power module of LED straight lamps can also include LED illumination module 530 members.Auxiliary power module 2510 is coupled between the first filtering output end 521 and the second filtering output end 522. Filtered signal on the first filtering output end 521 of detecting of auxiliary power module 2510 and the second filtering output end 522, and according to Detecting result decides whether to provide auxiliary power to the first filtering output end 521 and the second filtering output end 522.Believe after filtering Number stop provide or exchange level deficiency when, i.e., when the driving voltage of LED module is less than a boost voltage, auxiliary power module 2510 provide auxiliary power, make LED illumination module 530 can be with continuous illumination.Boost voltage is auxiliary according to the one of auxiliary power module Help supply voltage and determine.

Fig. 8 B are referred to, are the application circuit side according to the power supply module of the LED straight lamps of the utility model embodiment Block schematic diagram.Compared to Fig. 8 A illustrated embodiments, the LED straight lamps of the present embodiment include the first rectification circuit 510, filter circuit 520 and auxiliary power module 2510, and LED illumination module 530 also includes drive circuit 1530 and LED module 630.Accessory power supply Module 2510 is coupled between the first drive output 1521 and the second drive output 1522.The detecting of auxiliary power module 2,510 the The drive signal of one drive output 1521 and the second drive output 1522, and offer auxiliary is decided whether according to detecting result Electric power is to the first drive output 1521 and the second drive output 1522.When drive signal stops providing or exchanges level deficiency When, 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 2510 accessory power supplys provided are as working power, and external drive signal is then used as auxiliary power module 2510 and filled Electricity is used.LED illumination module is lighted by the present embodiment is the auxiliary power that is provided only with auxiliary power module 2810 530, no matter that is, external drive signal provided by civil power or provided by ballast, be all first to auxiliary power module 2810 energy-storage units are charged, then unify to power to rear end by energy-storage units.Thereby, using the power module of the present embodiment The LED straight lamps of framework can the external drive signal that is provided of compatible civil power or ballast.

From the perspective of structure, because above-mentioned auxiliary power module 2510 is the output that is 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 drive circuit 1530 1521 and second drive output 1522) between, therefore in an exemplary embodiment, its circuit can be placed in fluorescent tube (example The position of LED illumination module 530 or LED module 630 is adjacent in this way), use and avoid long cabling from causing power delivery to damage Consumption.In another exemplary embodiment, the circuit of auxiliary power module 2510 can also be located in lamp holder so that accessory power supply The caused heat energy in discharge and recharge of module 2510 is less susceptible to influence running and the luminous efficacy of LED module.

Fig. 8 A to Fig. 8 B embodiments configuration except can be applicable to single fluorescent tube emergency power supply supply in addition to, it can be answered Under the light fixture framework of more fluorescent tubes.By taking the light fixture of the LED straight lamp arranged in parallel with 4 as an example, implement in an example In example, 4 LED straight lamps can be that one of them includes auxiliary power module.When external drive abnormal signal, bag LED straight lamps containing auxiliary power module can be persistently lit, and other LED straight lamps can extinguish.In view of the equal of illumination Even property, the centre position of light fixture can be disposed on by being provided with the LED straight lamps of auxiliary power module.

In another exemplary embodiment, 4 LED straight lamps can plurality of include auxiliary power module. When external drive abnormal signal, include the LED straight lamps of auxiliary power module all can be lighted by auxiliary power simultaneously. Consequently, it is possible in the case of emergent, light fixture integrally stills provide certain brightness.In view of the uniformity of illumination, if Be to set exemplified by 2 LED straight lamps include auxiliary power module, this two LED straight lamps can be be not provided with it is auxiliary The LED straight lamps of power module are helped to be staggered configuration.

In another exemplary embodiment, 4 LED straight lamps can plurality of include auxiliary power module. When external drive abnormal signal, which part LED straight lamps can be lighted first by auxiliary power, and through after a period of time (being, for example), another part LED straight lamps are lighted by auxiliary power again.Consequently, it is possible to the present embodiment can pass through and other fluorescent tubes Coordinate the mode of offer auxiliary power order so that lighting hours of the LED straight lamps under emergency rating is extended.

Wherein, the embodiment for coordinating to provide auxiliary power order from other fluorescent tubes can be passed through in the different fluorescent tubes of setting Auxiliary power module the startup time, or set the mode of controller to link up auxiliary power module through in each fluorescent tube Between operating state, the utility model is any limitation as not to this.

Under the light fixture framework of more fluorescent tubes, similar to described in Fig. 8 A to Fig. 8 B embodiments, the present embodiment can be in light fixture A wherein fluorescent tube in auxiliary power module is set, or auxiliary power module is set in more fluorescent tubes of light fixture, wherein The fluorescent tube configuration mode considered for optical uniformity is equally applicable in the present embodiment.The present embodiment is real with earlier figures 8A to Fig. 8 B The Main Differences under the light fixture framework of more fluorescent tubes are applied to be that the present embodiment only has single fluorescent tube to be provided with auxiliary even if applying example Power module, it 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 Art personnel are after above-mentioned explanation is considered in light of actual conditions, it should be appreciated that how LED straight lamps at 2,3 or more than 4 are in parallel Under framework, implemented from suitable energy-storage units, as long as therefore auxiliary power module 2710 can supply electricity to branched parallel connection simultaneously One of LED straight lamps or multiple, auxiliary power can be reacted on LED straight lamps corresponding to order and there is certain luminance Embodiment aspect, come under the scope described by the present embodiment.

Fig. 9 A are referred to, are the application circuit side according to the power supply module of the LED straight lamps of the utility model embodiment Block schematic diagram.Compared to Fig. 4 C illustrated embodiments, the LED straight lamps of the present embodiment include the first rectification circuit 510, filter circuit 520 and also increase installation detecting module 2520, wherein power module can also include the members of LED illumination module 530.Peace Fill detecting module 2520 and couple the first rectification circuit 510 through the first installation sense terminal 2521, and through the second installation sense terminal 2522 coupling filter circuits 520.The installation detecting of detecting module 2520 flows through the first installation sense terminal 2521 and the second installation detecting The signal at end 2522, and decide whether that ending external drive signal flows through LED straight lamps according to detecting result.When LED straight lamps When being not yet formally installed on lamp socket, installation detecting module 2520 can detect less current signal and to judge that signal flows through too high Impedance, now installing the cut-off of detecting module 2520 stops operation LED straight lamps.If it is not, installation detecting module 2520 judges LED Straight lamp is correctly installed on lamp socket, and installation detecting module 2520 maintains conducting to make LED straight lamp normal operatings.That is, when flowing through One electric current of the first installation sense terminal and the second installation sense terminal is greater than or equal to a set-mounted electric current (or one Current value) when, installation detecting module judges that LED straight lamps are correctly installed on lamp socket and turned on, and LED straight lamps is operated in one Conducting state；When the electric current for flowing through the first installation sense terminal and the second installation sense terminal is set less than the installation When determining electric current (or current value), installation detecting module judges that LED straight lamps are not installed on lamp socket correctly and ended, and makes LED straight Spot enters a not on-state.In other words, installation impedance of the detecting module 2520 based on detecting judges on or off, makes LED straight lamps operate in conducting or into not on-states.Thereby, user can be avoided not yet correctly to pacify in LED straight lamps The problem of being got an electric shock during loaded on lamp socket because of false touch LED straight lamp current-carrying parts.

In another exemplary embodiment, because when human contact's fluorescent tube, the impedance of human body can cause on electric power loop Equiva lent impedance changes, and installation detecting module 2520 can judge whether user contacts by the voltage change on detecting electric power loop Fluorescent tube, it can equally realize above-mentioned electroshock-proof function.In other words, in the utility model embodiment, detecting module is installed 2520 can pass through detecting electric signal (including voltage or electric current) to judge whether fluorescent tube is properly installed and whether is user The current-carrying part of false touch fluorescent tube in the case where fluorescent tube is not installed correctly.

Fig. 9 B are referred to, are the circuit diagram according to the installation detecting module of the utility model embodiment.Installation is detectd Survey module and include on-off circuit 2580, detection pulse (pulse) generation module 2540, testing result latch cicuit 2560 and inspection Survey decision circuit 2570.Detect decision circuit 2570 (through switch coupling end 2581 and on-off circuit 2580) installation of coupling first Sense terminal 2521 and the installation sense terminal 2522 of coupling second, with the installation installation detecting of sense terminal 2521 and second of detecting first Signal between end 2522.Detecting decision circuit 2570, result end 2571 couples testing result latch cicuit after testing simultaneously 2560, by testing result signal, result end 2571 is sent to testing result latch cicuit 2560 after testing.Detect pulse generation Module 2540 couples testing result latch cicuit 2560 by pulse signal output end 2541.Testing result latch cicuit 2560 Testing result is latched according to testing result signal (or testing result signal and pulse signal), result latches end 2561 and coupled after testing On-off circuit 2580, testing result is transmitted or is reflected into on-off circuit 2580.On-off circuit 2580 is determined according to testing result Surely on or off between the first installation sense terminal 2521 and the second installation sense terminal 2522 is made.

Fig. 9 C are referred to, are the circuit diagram according to the detection pulse generating module of the utility model embodiment.Inspection Survey pulse generating module 2640 include electric capacity 2642 (or first capacitor), 2645 (or second capacitors) and 2646 (or Claim the 3rd capacitor), resistance 2643 (or first resistor device), 2647 (or second resistance devices) and 2648 (or the 3rd electricity Hinder device), buffer (buffer) 2644 (or first buffer) and 2651 (or second buffers), reverser 2650, two Pole pipe 2649 (or being the first diode) and OR gate (OR gate) 2652 (or being the first OR gate).Using or operating In, electric capacity 2642 and resistance 2643 are series at a driving voltage (such as referred to as VCC, and often being ordered as a high levle) and reference Between current potential (herein using the current potential on ground as embodiment), its tie point couples the input of buffer 2644.The coupling of resistance 2647 It is connected to the input of a driving voltage (can be described as VCC) and reverser 2650.Resistance 2648 is coupled to the input of buffer 2651 Between end and a reference potential (herein using the current potential on ground as embodiment).The positive ending grounding of diode, negative terminal are also coupled to buffer The input of device 2651.One end of electric capacity 2645 and 2646 one end couple the output end of buffer 2644, electric capacity 2645 jointly The other end connect the input of reverser 2650, and the other end of electric capacity 2646 then couples the input of buffer 2651.Instead The input of the output end coupling OR gate 2652 of output end and buffer 2651 to device 2650.It is noted that this case this In specification, current potential its " high levle " is relative to for another current potential in circuit or certain reference potential with " low level " (can be described as " high level " and " low level " sometimes), and again can be respectively as " logic high levle " and " logic low level ".

When LED straight lamps one end lamp holder insertion lamp socket and other end lamp holder human body in electrical contact or LED straight lamps it is double When end lamp holder inserts lamp socket, LED straight lamps are powered.Now, installation detecting module enters detection-phase.Electric capacity 2642 and resistance 2643 tie point level is at the beginning high (being equal to driving voltage VCC), is gradually reduced after with the time, is finally down to zero.It is slow The input coupling capacitance 2642 of device 2644 and the tie point of resistance 2643 are rushed, therefore exports high levle signal at the beginning, and When the tie point level of electric capacity 2642 and resistance 2643 is down to low logic and judges level, low level signal is changed into.It is it is, slow Rush device 2644 and produce an input pulse signal, persistently maintain low level (stopping exporting the input pulse signal) afterwards.It is described The pulse width of input pulse signal is equal to (initial setting) time cycle, and the time cycle is by the appearance of electric capacity 2642 Value and the resistance of resistance 2643 determine.

Then illustrate that buffer 2644 produces the operation in the setting time cycle of pulse signal.Due to electric capacity 2645 and resistance 2647 one end is equal to driving voltage VCC, therefore the connection end of electric capacity 2645 and resistance 2647 is also high levle.It is in addition, electric One end ground connection of resistance 2648, one end of electric capacity 2646 receive the pulse signal of buffer 2644.So electric capacity 2646 and resistance 2648 connection end in high levle at the beginning, then with the time it is gradual on be down to zero and (store and be equal or close to time electric capacity Driving voltage VCC voltage).Therefore, reverser 2650 exports low level signal, and buffer 2651 then exports high levle letter Number, and OR gate 2652 is exported high levle signal (the first pulse signal) in pulse signal output end 2541.Now, testing result Latch cicuit 2560 latches testing result for the first time according to testing result signal and pulse signal.When electric capacity 2646 and resistance 2648 The level of connection end when being down to low logic and judging level, buffer 2651 switchs to export low level signal, and makes OR gate 2652 Low level signal (stopping the first pulse signal of output) is exported in pulse signal output end 2541.The pulse that OR gate 2652 is exported The pulsewidth of signal is determined by the capacitance of electric capacity 2646 and the resistance of resistance 2648.

Then the operation being illustrated in after the stopping output pulse signal of buffer 2644, the i.e. operation into the operational phase. Because electric capacity 2646 stores the voltage close to driving voltage VCC, thus in buffer 2644 output switched to by high levle it is low The moment of level, electric capacity 2646 and the level of the connection end of resistance 2648 can be less than zero, and fast to electric capacity via diode 2649 Speed charges and the level of connection end is retracted zero.Therefore, buffer 2651 still maintains to export low level signal.

On the other hand, moment of low level is switched to by high levle in the output of buffer 2644, one end of electric capacity 2645 Level reduces by zero by driving voltage VCC moments, and the connection end for making electric capacity 2645 and resistance 2647 is low level.Reverser 2650 Output signal switchs to high levle, and OR gate is exported high levle (the second pulse signal).Now, testing result latch cicuit 2560 Testing result is latched according to testing result signal and pulse signal for the second time.Then, resistance 2647 charges to electric capacity 2645, makes electricity The level for holding the connection end of 2645 and resistance 2647 is gradually increasing with the time and arrives and be equal to driving voltage VCC.When appearance 2645 and electricity When the level of the connection end of resistance 2647 rises paramount logic judgment level, reverser 2650 exports low level once again, and makes OR gate 2652 stop the second pulse signal of output.The pulsewidth of second pulse signal is by the capacitance of electric capacity 2645 and the resistance institute of resistance 2647 Determine.

As described above, detection pulse generating module 2640 can produce the pulse signal-the of two high levles in detection-phase One pulse signal and the second pulse signal, are exported by pulse signal output end 2541, and the first pulse signal and the second pulse A setting time interval is spaced between signal, setting time interval is mainly by the capacitance of electric capacity 2642 and the resistance of resistance 2643 To determine.

And entering the operational phase after detection-phase, detection pulse generating module 2640 no longer produces pulse signal, and ties up It is low level to hold pulse signal output end 2541.

Fig. 9 D are referred to, are the circuit diagram according to the detection decision circuit of the utility model embodiment.Detection is sentenced Determine circuit 2670 and include comparator 2671 (or first comparator) and resistance 2672 (or the 5th resistor).Comparator 2671 end of oppisite phase, which receives, refers to level signal Vref, and non-oppisite phase end is through the ground connection of resistance 2672 and couples switch coupling end simultaneously 2581.Please referring also to Fig. 9 A, the signal that on-off circuit 2580 is flowed into by the first installation sense terminal 2521 can couple via switch End 2581 exports and flows through resistance 2672.When the electric current for flowing through resistance 2672 it is excessive (that is, greater than or equal to set-mounted electric current, Such as：Current value 2A) and the level on resistance 2672 (is may correspond to described two when being higher than the level for referring to level signal Vref Lamp holder is correctly inserted into the lamp socket), the testing result signal of the generation high levle of comparator 2671 is simultaneously defeated by testing result end 2571 Go out.For example, when LED straight lamps are correctly installed on lamp socket, comparator 2671 can export high levle in testing result end 2571 Testing result signal.Level signal Vref is referred to when the electric current deficiency for flowing through resistance 2672 is higher than the level on resistance 2672 Level when (may correspond to only one of which lamp holder and be correctly inserted into the lamp socket), comparator 2671 produce low level detection Consequential signal is simultaneously exported by testing result end 2571.For example, when LED straight lamps are not correctly installed on lamp socket, or one end peace When loaded on lamp socket, the other end is through human body grounding, electric current makes comparator 2671 export low standard in testing result end 2571 by too small The testing result signal of position.

Fig. 9 E are referred to, are the circuit diagram according to the testing result latch cicuit of the utility model embodiment.Inspection Survey result latch cicuit 2660 and include D flip-flop (D Flip-flop) 2661 (or first D flip-flop), resistance 2662 (or the 4th resistor) and OR gate 2663 (or second OR gate).Clock input (CLK) coupling of D flip-flop 2661 Testing result end 2571, input D coupling driving voltages VCC.When testing result end 2571 exports the testing result letter of low level Number when, D flip-flop 2661 in output end Q export low level signal；When testing result end 2571 exports the detection knot of high levle During fruit signal, D flip-flop 2661 exports high levle signal in output end Q.Resistance 2662 is coupled to the defeated of D flip-flop 2661 Go out to hold between Q and reference potential (such as the current potential on ground).When the first of the output of the return pulse signal output end 2541 of OR gate 2663 Pulse signal or the second pulse signal, or D flip-flop 2661 is when the high levle signal that output end Q is exported, in testing result Latch the testing result latch signal that end 2561 exports high levle.Because detection pulse generating module 2640 is defeated only in detection-phase When going out the first pulse signal or the second pulse signal, the leading output of OR gate 2663 high levle testing result latch signal, and remaining Time (include detection-phase after operational phase) by D flip-flop 2661 dominate testing result latch signal for high levle or Low level.Therefore, when testing result end 2571 did not occurred the testing result signal of high levle, D flip-flop 2661 is in defeated Go out to hold Q to maintain low level signal, and testing result is latched end 2561 and also maintain the testing result of low level to lock in the operational phase Deposit signal.Conversely, when testing result end 2571 was when there is the testing result signal of high levle, the meeting of D flip-flop 2661 Latch and maintain high levle signal in output end Q.In this way, testing result, which is latched when end 2561 enters the operational phase, also maintains Gao Zhun The testing result latch signal of position.

Fig. 9 F are referred to, are the circuit diagram according to the on-off circuit of the utility model embodiment.On-off circuit 2680 can include a transistor (transistor), such as bipolar junction transistors 2681 (or the first transistor) conduct One power transistor (power transistor).Power transistor can handle high current and power, be particularly used to switch electricity Lu Zhong.Collector coupling the first installation sense terminal 2521 of bipolar junction transistors 2681, base stage coupling testing result latch end 2561, and emitter-base bandgap grading switch coupling end 2581.When detection pulse generating module 2640 produces the first pulse signal or the second pulse letter Number when, of short duration conducting is detected detection decision circuit 2670, to determine testing result by bipolar junction transistors 2681 Latch signal is high levle or low level.High levle is exported when testing result latch cicuit 2660 latches end 2561 in testing result Testing result latch signal when, bipolar junction transistors 2681 make conducting the first installation sense terminal 2521 and second Turned between installation sense terminal 2522.Low level is exported when testing result latch cicuit 2660 latches end 2561 in testing result During testing result latch signal, bipolar junction transistors 2681 make cut-off the first installation sense terminal 2521 and the second peace End between dress sense terminal 2522.

Because external drive signal is AC signal, when being detected in order to avoid detection decision circuit 2670, external drive letter Number level just zero crossings cause detect mistake.Therefore, detect pulse generating module 2640 and produce the first pulse letter Number and the second pulse signal so that detection decision circuit 2670 detects twice, the standard of external drive signal during avoiding single from detecting Position is just the zero crossings the problem of.Preferably, the generation time of the first pulse signal and the second pulse signal difference is not institute And the 180 degree phase difference of external drive signal described in non-corresponding the integer multiple of the cycle half of external drive signal is stated, i.e., Integer multiple.In this way, when one of the first pulse signal and the second pulse signal produce, if unfortunate external drive signal is zero External drive signal can be avoided also in zero crossings near point, during another generation.

The generation time of above-mentioned first pulse signal and the second pulse signal is poor, i.e., setting time interval can be with formula table Show as follows：

Setting time interval=(X+Y) (T/2)

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

The preferable scopes of Y are between 0.05-0.95, between more preferably 0.15-0.85.

Furthermore when entering detection-phase in order to avoid installation detecting module, driving voltage VCC level is too low to be caused to pacify The circuit logic misjudgment of dress detecting module is begun to ramp up.Driving voltage is may be set in the generation of the first pulse signal VCC is reached or produced during higher than a predetermined level, driving voltage VCC is detected decision circuit 2670 just after reaching enough levels Carry out, to avoid the circuit logic misjudgment of the caused installation detecting module of level deficiency.

Understand according to the above description, when LED straight lamps one end lamp holder insertion lamp socket and other end lamp holder is suspension joint or electricity Property contact human body when, make the testing result signal of detection decision circuit output low level because impedance is big.Testing result latches electricity The detection of low level is latched into the testing result signal of low level according to the pulse signal of detection pulse generating module in road As a result latch signal, and also maintain testing result when the operational phase.In this way, on-off circuit can be made to maintain cut-off and avoid continuing It is powered.It so can also avoid human electric shock possible, so as to meet the requirement of safety.And when the both ends lamp of LED straight lamps Head is when being correctly inserted into lamp socket, makes the detection of detection decision circuit output high levle because the impedance of LED straight lamps circuits itself is small Consequential signal.Testing result latch cicuit is according to testing result signal of the pulse signal to high levle for detecting pulse generating module The testing result latch signal of high levle is latched into, and testing result is also maintained when the operational phase.In this way, switch can be made Circuit maintains conducting and is persistently powered, and makes the normal operating when operational phase of LED straight lamps.

In other words, in certain embodiments, when the lamp holder insertion lamp socket described in one end of the LED straight lamps is another When lamp holder 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 the testing result latch cicuit is arrived, then the detection pulse generating module exports a low level signal and tied to the detection Fruit latch cicuit, make a testing result latch signal of the testing result latch cicuit output low level so that the switch electricity Road is ended, wherein the cut-off of the on-off circuit makes to end between the first installation sense terminal and the second installation sense terminal, Even if also the LED straight lamps enter a not on-state.

And in certain embodiments, when two lamp holder of the LED straight lamps is correctly inserted into the lamp socket, 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 on-off circuit turns on, wherein the on-off circuit is led It is logical to make to turn between the first installation sense terminal and the second installation sense terminal, even if also the LED straight lamps operate in one Conducting state.

It is worth noting that, in 10us between 1ms, it makees the pulsewidth of pulse signal caused by detection pulse generating module With only when LED straight lamps are powered moment, making on-off circuit turn on of short duration time using this pulse signal.It can so produce A raw pulse current, flow through detection decision circuit and carry out detection judgement.It is the pulse of short time because caused and leads for a long time It is logical non-, Danger Electric shock risk can't be triggered.Furthermore testing result latch cicuit also maintains testing result when the operational phase, no longer The problem of changing the testing result previously latched because circuit state changes, and avoiding testing result from changing and cause.And install Detecting module (i.e. on-off circuit, detection pulse generating module, testing result latch cicuit and detection decision circuit) can collect It into chip, can so be embedded into circuit, the circuit cost and volume of installation detecting module can be saved.

Though applicant in previous case, such as:In CN106015996A, it is proposed that using detecting pulse generating module The first pulse signal and the second pulse signal are produced so that detection decision circuit carries out detection judgement, applicant is when implementing to this The embodiment of scheme has carried out further improvement, it is intended to reduces the volume of detecting module and further improves what detection judged Precision.Next the detailed improved embodiment of description.

Fig. 9 G are referred to, are the circuit diagram according to the installation detecting module of the utility model embodiment.Installation is detectd Survey module and include a detecting pulse generating module 2740, a testing result latch cicuit 2760, an on-off circuit 2780 and one Detect decision circuit 2770.Wherein, detect pulse generating module 2740 and be electrically connected with testing result latch cicuit 2760, to produce A raw at least pulse signal.Testing result latch cicuit 2760 is electrically connected with on-off circuit 2780, to receive and export detecting The pulse signal that pulse generating module 2740 is exported.LED straight lamp electric power loops are electrically connected in on-off circuit 2780 One end and detection decision circuit 2770, to receive pulse signal that testing result latch cicuit 2760 exported and in this pulse Turned on during signal so that LED straight lamps electric power loop turns on.On-off circuit is electrically connected in detection decision circuit 2770 2780th, the other end of LED straight lamps electric power loop and testing result latch cicuit 2760, to on-off circuit 2780 with When LED power loop turns on, the sampled signal on electric power loop is detected to judge the installment state of LED straight lamps and lamp socket.

In other words, the electric power loop of the present embodiment is used as to install the detection path of detecting module.Wherein, detection judges Testing result is more sent to testing result latch cicuit 2760 to carry out further control by circuit 2770；In addition, detecting pulse The output that module 2740 is also electrically connected with testing result latch cicuit 2760 occurs, uses the time of control disabling pulse signal. Its thin portion circuit framework and the explanation of integrated circuit running will be successively described in down.

In certain embodiments, detect pulse generating module 2740 and produce a pulse via testing result latch cicuit 2760 Signal (i.e. burst pulse), so that on-off circuit 2780 is operated in conducting state during pulse.Meanwhile LED straight lamps are positioned at peace Electric power loop between dress sense terminal 2521 and 2522 can also simultaneously turn on.Detection decision circuit 2770 is detected on electric power loop A sampled signal, and the signal detected based on sampled signal feeds back to testing result latch cicuit 2760.For example, Detection decision circuit 2770 can be for example the circuit of the output level that can produce to control latch circuit, wherein latch circuit Output level can be mutually corresponding with the conduction and cut-off state of LED straight lamps.Testing result latch cicuit 2760 is according to testing result Signal (or testing result signal and pulse signal) stores testing result, and transmits or provide testing result to on-off circuit 2780., i.e., can be according to detection after on-off circuit 2780 receives the testing result transmitted by testing result latch cicuit 2760 As a result come control installation sense terminal 2521 and 2522 between conducting state.It is, when reaching the threshold value of setting, testing result The lock-in detection result of latch cicuit 2760, and testing result is transmitted or provides on-off circuit 2780, installation sense terminal 2521 with Turned between 2522.Before not turned between installing sense terminal 2521 and 2522, detecting pulse generating module interval sends arteries and veins Rush signal.

Fig. 9 H are referred to, are the detecting pulse generating module schematic diagram according to the utility model embodiment.Detect pulse Generation module 2740 includes：One resistance 2742 (the 6th resistance), one end connect a driving voltage；(the 4th electricity of one electric capacity 2743 Hold), one end connects the other end of resistance 2742, and the other end ground connection of electric capacity 2743；One schmitt trigger 2744, have one Input and an output end, input connection resistance 2742 and the connection end of electric capacity 2743, the output end connecting detection result Latch cicuit 2760；One resistance 2745 (the 7th resistance), the connection end of one end connection resistance 2742 and electric capacity 2743；One transistor 2746 (second transistors), have a base terminal, a collector terminal and an emitter-base bandgap grading end, and the collector terminal connects the another of resistance 2745 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 resistance 2747 other end connecting detection result latch cicuit 2760 and on-off circuit 2780.Detecting pulse generating module 2740 also includes Zener diode 2748, there is an anode tap and a cathode terminal, the other end ground connection of anode tap connection electric capacity 2743, the moon One end that extreme connection electric capacity 2743 is connected with resistance 2742.

Fig. 9 I are referred to, are the testing result latch cicuit schematic diagram according to the utility model embodiment.Testing result Latch cicuit 2760 includes：One D flip-flop 2762 (the second D flip-flop), there is a data input pin, a frequency input With an output end, the data input pin connects the driving voltage, the frequency input connecting detection decision circuit 2770；And one OR gate 2763 (the 3rd OR gate), there is a first input end, one second input and an output end, first input end connection history The output end of schmitt trigger 2744, second input connect the output end of D flip-flop 2762, and the output of OR gate 2763 The other end and on-off circuit 2780 of end connection resistance 2747.

Fig. 9 J are referred to, are the on-off circuit schematic diagram according to the utility model embodiment.On-off circuit 2780 includes： One transistor 2782 (third transistor), there is a base terminal, a collector terminal and an emitter-base bandgap grading end, base terminal connection OR gate 2763 Output end, collector terminal connection LED power loop one end (such as：First installation sense terminal 2521), emitter-base bandgap grading end connection Detect decision circuit 2770.Wherein, the also replaceable equivalent elements into other electronic switch of transistor 2782, such as： MOSFET etc..

Fig. 9 K are referred to, are the detection decision circuit schematic diagram according to the utility model embodiment.Detect decision circuit 2770 include：One resistance 2774 (the 9th resistance), one end connects the emitter-base bandgap grading end of transistor 2782, and the other end of resistance 2774 connects Connect LED power loop the other end (such as：Second installation sense terminal 2522)；One diode 2775 (the second diode), has One anode tap and a cathode terminal, the anode tap connect one end of resistance 2744；One comparator 2772 (the second comparator), have one First input end, one second input and an output end, one setting signal of first input end connection (such as：Reference voltage Vref, it is 1.3V in the present embodiment, right not limited to this), second input connects the cathode terminal of diode 2775, and comparator The frequency input of 2772 output end connection D flip-flop 2762；One comparator 2773 (the 3rd comparator), have one first Input, one second input and an output end, the first input end connect the cathode terminal of diode 2775, second input Connect another setting signal (such as：Another reference voltage Vref, it is 0.3V in the present embodiment, right not limited to this), and comparator Output end connection D flip-flop 2762 frequency input；One resistance 2776 (the tenth resistance), one end connect driving electricity Pressure；One resistance 2777 (the 11st resistance), the second input of the other end and comparator 2772 of one end connection resistance 2776, and The other end ground connection of resistance 2777；And an electric capacity 2778 (the 5th electric capacity), it is in parallel with resistance 2777.In certain embodiments, Above-mentioned diode 2775, comparator 2773, resistance 2776, resistance 2777 and electric capacity 2778 can be omitted, and work as diode 2775 when being omitted, and the second input of comparator 2772 is just directly connected to one end of resistance 2774.In certain embodiments, base Consider that resistance 2774 can be two resistor coupled in parallel, and its equivalent resistance is between 0.1 ohm~5 ohm in power factor (PF).

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：Integrate the schmitt trigger of detecting pulse generating module 2740 2744th, testing result latch cicuit 2760 and two comparators 2772,2773 of decision circuit 2770 are detected in an integrated circuit, Right the utility model not limited to this.

Next just the integrated circuit running of installation detecting module is illustrated.First it is noted that this programme utilizes The principle that capacitance voltage will not undergo mutation；Electric capacity in LED straight lamp electric power loops is before electric power loop conducting, its both ends electricity Pressure is zero and short-circuit condition is presented in transient response；And when electric power loop is correctly installed on lamp socket in LED straight lamps, its transient state Response current-limiting resistance is smaller and peak value of response electric current is larger, when electric power loop is not correctly installed on lamp socket in LED straight lamps, its The principles such as transient response current-limiting resistance is larger and peak value of response electric current is smaller are carried out, and make the leakage current of LED straight lamps Less than 5MIU.Below will be with regard to LED straight lamps in normal work (LED straight lamps both ends lamp holder is correctly installed in lamp socket) The electricity of (i.e. LED straight lamps one end lamp holder is installed in lamp socket and other end lamp holder contacts human body) embodiment during with changing lamp test Flow-rate ratio compared with：

Wherein, in denominator part, Rfuse is the fuse resistance (10 ohm) of LED straight lamps, and 500 ohm are simulation Resistance of the conductive characteristic of human body in transient response；And in molecular moiety, take rms voltage 90V~305V maximum voltage It is worth (305*1.414) and minimum voltage difference 50V.If from above example it is known that LED straight lamps both ends lamp holder just Really it is installed in lamp socket, minimum transient current during its normal work is 5A；But when LED straight lamps one end lamp holder is installed on lamp socket When interior and other end lamp holder contacts human body, its maximum transient current but only has 845mA.Therefore, the utility model utilization can pass through Transient response flow through in LED power loop electric capacity (such as：The filter capacitor of filter circuit) electric current to detect LED straight lamps With the installment state of lamp socket, that is, detect whether LED straight lamps are correctly installed in lamp socket, and in LED straight lamps not yet just Really when being installed in lamp socket, a protection mechanism is more provided got an electric shock with avoiding user because of false touch LED straight lamp current-carrying parts Problem.The above embodiments only and are not used to limit implementation of the present utility model to illustrate the utility model.

Then, referring again to Fig. 9 G, when LED straight lamps change the outfit in lamp socket, detecting pulse generating module 2740 is one The section time (this time determines the pulse period), it exports from one first low level voltage and rises to one first high levle voltage, And this first high levle voltage is exported to testing result latch cicuit 2760 via a path 2741.Testing result latch cicuit After 2760 receive this first high levle voltage, one second high levle voltage is exported simultaneously to on-off circuit via a path 2761 2780 with detecting pulse generating module 2740.After on-off circuit 2780 receives this second high levle voltage, on-off circuit 2780 Conducting causes an electric power loop of LED straight lamps (to comprise at least the first installation sense terminal 2521, on-off circuit 2780, path 2781st, detect decision circuit 2770 and second and sense terminal 2522 be installed) conducting；And at the same time, detect pulse generating module 2740 a period of time after the second high levle voltage returned by testing result latch cicuit 2760 is received, (this time determined Determine pulse width), its 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 forms one first pulse signal with secondary first low level voltage).And detect decision circuit 2770 LED straight lamps electric power loop conducting when, detect on its loop one first sampled signal (such as：Voltage signal), when this First sampled signal be more than and/or equal to a setting signal (such as：One reference voltage) when, it is former according to the application of above-mentioned this programme Reason, represent that LED straight lamps are correctly installed in lamp socket, therefore detect decision circuit 2770 and export one the 3rd via a path 2771 High levle voltage (the first high levle signal) is to testing result latch cicuit 2760.Testing result latch cicuit 2760 receive this Three high levle voltages and then export and maintain one second high levle voltage (the second high levle signal) to on-off circuit 2780, switch Circuit 2780 receives this second high levle voltage and then maintains to turn on so that the electric power loop of LED straight lamps maintains conducting, therebetween Detecting pulse generating module 2740 no longer produces pulse output.

When this first sampled signal is less than this setting signal, according to above-mentioned application principle of the present utility model, LED is represented Straight lamp is not yet correctly installed in lamp socket, therefore is detected decision circuit 2770 and exported one the 3rd low level voltage (the first low standard Position signal) to testing result latch cicuit 2760.Testing result latch cicuit 2760 receives this 3rd low level voltage and then defeated Go out and maintain the second low level voltage (the second low level signal) to on-off circuit 2780, it is second low that on-off circuit 2780 receives this Level voltage and then maintenance end so that the electric power loop of LED straight lamps maintains open circuit.In the case, user is avoided to exist The problem of LED straight lamps are not yet correctly installed on lamp socket Nei Shiyin false touches LED straight lamps current-carrying part and got an electric shock.

After the electric power loop of above-mentioned LED straight lamps maintains open circuit a period of time (i.e. PRT), pulse is detected The output that module 2740 occurs rises to the first high levle voltage from the first low level voltage again, and is exported 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 on-off circuit 2780 and detecting pulse generating module 2740 simultaneously.Work as on-off circuit After 2780 receive this second high levle voltage, on-off circuit 2780 turns on again causes the electric power loop of LED straight lamps (at least to wrap Include the first installation sense terminal 2521, on-off circuit 2780, path 2781, the detection installation sense terminal of decision circuit 2770 and second 2522) also turn on again；At the same time, pulse generating module 2740 is detected to be returned by testing result latch cicuit 2760 in reception A period of time (this time determines pulse width) after the second high levle voltage passed, it is exported from the first high levle voltage drop Return one first low level voltage (the first low level voltage of third time, the of secondary first high levle voltage and the 4th time One low level voltage forms one second pulse signal).And the electric power loop for detecting decision circuit 2770 in LED straight lamps is led again When logical, also detect again on its loop one second sampled signal (such as：Voltage signal), when this second sampled signal is more than And/or equal to setting signal (such as：One reference voltage) when, according to above-mentioned application principle of the present utility model, represent LED straight tubes Lamp is correctly installed in lamp socket, therefore is detected decision circuit 2770 and exported one the 3rd high levle voltage (first via path 2771 High levle signal) to testing result latch cicuit 2760.Testing result latch cicuit 2760 receives this 3rd high levle voltage and entered And export and maintain one second high levle voltage (the second high levle signal) to on-off circuit 2780, on-off circuit 2780 to receive this Second high levle voltage and then maintenance turn on the electric power loop maintenance conducting so that LED straight lamps, detect pulse generation mould therebetween Block 2740 no longer produces pulse wave output.

When this second sampled signal is less than this setting signal, according to above-mentioned application principle of the present utility model, LED is represented Straight lamp is not installed in lamp socket correctly yet, therefore is detected decision circuit 2770 and exported one the 3rd low level voltage (the first low standard Position signal) to testing result latch cicuit 2760.Testing result latch cicuit 2760 receives this 3rd low level voltage and then defeated Go out and maintain one second low level voltage (the second low level signal) to on-off circuit 2780, on-off circuit 2780 receive this second Low level voltage and then maintenance end so that the electric power loop of LED straight lamps maintains open circuit.

Then, please referring also to Fig. 9 H to Fig. 9 K, when LED straight lamps change the outfit in lamp socket, a driving voltage is via resistance 2742 pairs of electric capacity 2743 charge, and when the voltage of electric capacity 2743 rises to and is enough to trigger schmitt trigger 2744, history Schmitt trigger 2744 becomes one first high levle voltage output to the one of OR gate 2763 from one first initial low level voltage Input.For OR gate 2763 after the first high levle voltage exported from schmitt trigger 2744 is received, OR gate 2763 is defeated Go out one second high levle voltage to the base terminal and resistance 2747 of transistor 2782.When the base terminal of transistor 2782 receives After the second high levle voltage exported from OR gate 2763, the collector terminal of transistor 2782 turns on emitter-base bandgap grading end, and then causes LED The electric power loop of straight lamp (comprises at least the first installation sense terminal 2521, transistor 2782, the installation detecting of resistance 2774 and second 2522) end turns on；And at the same time, the base terminal of transistor 2746 receive that OR gate 2763 exported via resistance 2747 second After high levle voltage, the collector terminal of transistor 2746 turns on ground connection with emitter-base bandgap grading end so that the voltage of electric capacity 2743 is via resistance 2745 discharge over the ground, when the undertension of electric capacity 2743 is to trigger schmitt trigger 2744, schmitt trigger 2744 Output drops back to the first low level voltage (the first low level voltage, the first high levle voltage of first time from the first high levle voltage One first pulse signal is formed with secondary first low level voltage).And when the electric power loop conducting of LED straight lamps, lead to Cross transient response flow through in LED power loop electric capacity (such as：The filter capacitor of filter circuit) electric current flow through transistor 2782 with resistance 2774, and a voltage signal is formed on resistance 2774, this voltage signal is via the reference of comparator 2772 and one Voltage (being 1.3V in the present embodiment, right not limited to this) is compared, when this voltage signal is more than and/or equal to this reference voltage When, comparator 2772 exports one the 3rd high levle voltage to the frequency input CLK of D flip-flop 2762, simultaneously because D types touch The data input pin D connection driving voltages of device 2762 are sent out, therefore the output end Q of D flip-flop 2762 exports a high levle voltage To another input of OR gate 2763 so that OR gate 2763 exports and maintains the second high levle voltage to the base stage of transistor 2782 End, and then cause the electric power loop of transistor 2782 and LED straight lamps to maintain conducting.Because OR gate 2763 exports and maintains Two high levle voltages, therefore transistor 2746 also maintains conducting to be grounded, and then cause the voltage of electric capacity 2743 can not rise to foot To trigger schmitt trigger 2744.

And when the voltage signal on resistance 2774 is less than reference voltage, comparator 2772 exports one the 3rd low level voltage To the frequency input CLK of D flip-flop 2762, simultaneously because the initial output value of D flip-flop 2762 is zero, therefore D types The output end Q of trigger 2762 exports a low level voltage to another input of OR gate 2763, and due to OR gate 2763 The schmitt trigger 2744 that one end is connected also recovers to export the first low level voltage, therefore OR gate 2763 exports and maintains the Two low level voltages to transistor 2782 base terminal, and then cause transistor 2782 maintain cut-off and LED straight lamps electricity Resource loop maintains open circuit.However, because OR gate 2763 exports and maintains the second low level voltage, therefore transistor 2746 also maintains In cut-off state, voltage to be driven is charged via resistance 2742 to electric capacity 2743 to repeat to detect next time (pulse) again Survey.

It is worth noting that, the pulse period is determined by the resistance value and the capacitance of electric capacity 2743 of resistance 2742, 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 and the capacitance of electric capacity 2743 of resistance 2745, in certain embodiments, arteries and veins Rushing the width of signal includes 1us~100us, and further, the width of pulse signal includes 10us~20us；Zener diode 2748 are provided protection against, but it can be omitted；Resistance 2774 is considered based on power factor (PF), can be two resistor coupled in parallel, its is equivalent Resistance value includes 0.1 ohm~5 ohm；Resistance 2776 and 2777, which provides partial pressure, ensures that input voltage is higher than the ginseng of comparator 2773 Examine voltage (being 0.3V in the present embodiment, right not limited to this)；Electric capacity 2778 provides voltage stabilizing and filter function；Diode 2775 ensures The one-way of signal transmission.In addition, at this point it is to be emphasized that, the installation detecting module disclosed by the utility model is applicable to it His both-end enters the LED illumination device of electricity, such as：LED with Double-End Source construction for electricity and comprising directly utilizing civil power Or by the use of the signal that ballast is exported as LED of external drive voltage etc., the utility model is not intended to limit installation detecting The application of module.

Those skilled in the art should can consider in light of actual conditions herein and recognize the installation detecting module disclosed in this case embodiment not only Be can be used as distributed circuit design in LED straight lamps, can also by partial circuit component integration into an integrated circuit, Or whole circuit units are integrated into an integrated circuit, use the circuit cost and volume for saving installation detecting module.This Outside, detecting module is installed through modularization/integrated setting, may be such that installation detecting module can be easier to collocation in inhomogeneity In the LED straight lamps design of type, and then improve design compatibility.On the other hand, integrated installation detecting module is in LED straight tubes Under the application of lamp, because the circuit area inside fluorescent tube is reduced significantly therefore may be such that the lighting area of LED straight lamps is obvious Ground is lifted, and then improves the photocurrent versus light intensity performance of LED straight lamps.Furthermore because integrated design can make the group being integrated The operating current of part reduces and (reduces about 50%), and improves circuit operating efficiency, therefore the power saved can be used for It should give LED module luminous use so that the luminous efficiency of LED straight lamps can be lifted further.

Installation detecting module in such scheme can substitute foregoing implementation using the existing frequency signal of power module The function of the pulses generation mechanism of example.For example, drive circuit (such as DC-DC converter) is for pulsewidth to be produced Modulation (PWM) signal, itself just has a reference frequency.And the function of the pulses generation mechanism can utilize reference The reference frequency of pwm signal is implemented so that detecting pulse generating module 2540 and 2740, pulses generation auxiliary circuit 2840 with And the grade hardware circuit of signal generation unit 2940 can be omitted.In other words, install detecting module can with power module Other parts share circuit framework, so as to realize the function of producing pulse signal.

One is attached in addition to be mentioned that, in the description of this case, although the name for the functional property of 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 work(of this case Energy life name is not limited to specific circuit unit and is only capable of including in specific modules/circuits, is first chatted in this conjunction bright.

In summary, above-mentioned Fig. 9 A- Fig. 9 K embodiments have taught anti-tactile to realize using Electronic Control and the mode of detecting Electric protection.For the technology of protection against electric shock is carried out using the action of mechanical structure, due to the control and detecting of electronic type The problem of method will not be with the presence of mechanical fatigue, also help modularization, the design of miniaturization.Therefore carried out using electronic signal The electrocution-proof protection of fluorescent tube can have preferable reliability and service life.

In such scheme, it is single-ended enter the pin that refers to from one end lamp holder of LED straight lamps of electricity be electrically connected to external drive Signal, both-end enter the pin that electricity refers to from the both ends lamp holder of LED straight lamps and are electrically connected to external drive signal.

In power supply module design, in some embodiments, it is contemplated that the power of power supply module and the size of lamp holder, by certain One power power-supply module is fabricated to 2 small power supply modules (it is cumulative and is predetermined power), is separately positioned on LED straight lamps two In the lamp holder of side.

In power supply module design, described external drive signal can be low-frequency ac signal (such as：Civil power is carried For), high frequency ac signal (such as：Electric ballast is provided) or direct current signal is (by auxiliary power module such as：Battery is carried For).

Described external drive signal be low-frequency ac signal (such as：Civil power is provided) or direct current signal (such as：Battery There is provided) LED straight lamps can be applied to both-end enter electricity (wiring) mode, can also support wherein one end using as it is single-ended enter electricity I.e. at this moment LED straight lamps support single-ended or both-end to enter electricity to (wiring) mode of (power supply), while LED straight lamps apply also for answering The occasion suddenly illuminated, at this moment LED straight lamps need connect auxiliary power module.

In the auxiliary power module design of power supply 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 drive circuit.

When LED straight lamps enter (wiring) mode of electricity applied to both-end, installation detecting module is configured with LED straight lamps, To reduce the risk of leakage current.

In addition, " above " that above-described embodiment refers to refers to the light direction of light source, namely the face on lamp plate where light source is Above, and back to light source lamp plate for " below "." above " and " following " are merely to clearly illustrate this with reference to accompanying drawing Utility model, it is not to being provided with pad above limitation of the present utility model, such as the lamp plate, being not to say that lamp plate can only Pad is provided with above, it is understood that the wherein at least one side of lamp plate is provided with pad.It is " soft board " described in the utility model and " hard Plate " is also that comparatively i.e. hardboard is not necessarily referring to the hard plate of material with respect to being hardboard for soft board.

When direct current signal is as external drive signal, the power supply module of LED straight lamps can omit rectification circuit.

In the rectification circuit design of power supply module, the first rectification unit and the second rectification unit point in double rectification circuits Pin not with configuring in the both ends lamp holder of LED straight lamps couples.Double rectification units are applied to the driving framework of Double-End Source.And And when being configured with an at least rectification unit, go 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-bridge rectifier circuit or half-wave rectifying circuit and full-bridge rectification The combination of circuit each one.

Can be each single pin (totally two pins) of both-end, each double pins of both-end in the pin design of LED straight lamps The framework of (totally four pins).Under the framework of each single pin of both-end, the rectification circuit design of single rectification circuit is applicable to. Under the framework of each double pins of both-end, the rectification circuit design of double rectification circuits is applicable to, 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 supply module, can have Single Capacitance or π type filter circuits, after filtering out rectification Radio-frequency component in signal, and the direct current signal for providing low ripple is filtered signal.Filter circuit can also include LC and filter Circuit, so that high impedance is presented to specific frequency.Furthermore filter circuit can also include the filter being coupled between pin and rectification circuit Ripple unit, to reduce the electromagnetic interference caused by the circuit of LED.When direct current signal is as external drive signal, LED straight tubes The power supply module of lamp can omit filter circuit.

In the LED illumination module design of power supply module, comprising LED module or LED module and driving only can be included Circuit.To ensure that the voltage in LED illumination module is unlikely overvoltage can also be occurred for mu balanced circuit and LED illumination wired in parallel. Mu balanced circuit can be voltage clamping circuit, such as：Zener diode, bi-directional voltage stabilizing pipe etc..When rectification circuit includes condenser network, An electric capacity can be connected two-by-two between in a pin at each end of both-end and a pin of the other end, to be carried out with condenser network Partial pressure acts on and is used as mu balanced circuit.

In only the design of LED module is included, when high frequency ac signal is as external drive signal, an at least rectified current Road includes condenser network (that is, comprising more than one electric capacity), connects, makes with the full-bridge in rectification circuit or half-wave rectifying circuit Condenser network is equivalent to impedance as current regulating circuit and to adjust the electric current of LED module under high frequency ac signal.Thereby, When different electric ballasts provides the high frequency ac signal of different voltages, the electric current of LED module can be adjusted in default The unlikely situation that excessively stream occurs in current range.Furthermore it is possible to additionally energy circuit is released in increase, and it is in parallel with LED module, in outside Drive signal stops after providing, aid in by filter circuit release can, caused by reducing filter circuit or other circuits Resonance causes the situation of LED module flashing.In comprising LED module and drive circuit, drive circuit can be that direct current turns DC boosting change-over circuit, DC-DC decompression converting circuit or DC-DC lifting voltage conversion circuit.Drive circuit system The electric current of LED module to be stablized in setting electric current value, can also be heightened according to the high or low of external drive signal come corresponding Or turn down setting electric current value.Furthermore it is possible to additionally increase mode selector switch between LED module and drive circuit, make electric current LED module is directly inputted by filter circuit or LED module is inputted after overdrive circuit.

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

In the LED module design of power supply module, it is (that is, single that LED module can include the multi-string LED component being connected in parallel to each other One LED chip, or the LED groups of multiple LED modules with different colors chips composition) to go here and there, the LED component in each LED component string can be each other Connect and form netted connection.

That is, features described above can be made to arbitrary permutation and combination, and for the improvement of LED straight lamps, to continue Improve applicant previously proposed CN 105465640, CN 205424492, CN 106015996, CN 105472836 it is single or Its deficiency combined, there is provided safer, it is easier to manufacture and/or characteristic more preferably LED straight lamps.

Claims

1. a kind of circuit for installing detecting module, is configured in a LED straight lamps, for detecting the LED straight lamps and lamp socket Installment state, for detecting the installment state of the LED straight lamps and lamp socket, the installation detecting module includes：Detect pulse hair Raw module, testing result latch cicuit, on-off circuit and detection decision circuit, wherein：

The detecting pulse generating module is electrically connected with the testing result latch cicuit and the on-off circuit, to produce to A few pulse signal；And the output of the testing result latch cicuit is electrically connected with, to control the time of disabling pulse signal；

The testing result latch cicuit is electrically connected with the on-off circuit, defeated to receive and export detecting pulse generating module institute The pulse signal gone out；

One end of LED straight lamp electric power loops and the detection decision circuit is electrically connected in the on-off circuit, to connect Receive the pulse signal that the testing result latch cicuit is exported and turned on during the pulse signal, LED straight lamp power supplys Loop turns on；

The on-off circuit, the other end of LED straight lamp electric power loops and institute is electrically connected in the detection decision circuit Testing result latch cicuit is stated, when on-off circuit turns on LED power loop, to detect the sampled signal on electric power loop To judge the installment state of LED straight lamps and lamp socket.

2. the circuit of installation detecting module according to claim 1, it is characterised in that the detecting pulse generating module bag Contain：

6th resistance, one end connect a driving voltage；

4th electric capacity, one end connect the other end of the 6th resistance, and the other end ground connection of the 4th electric capacity；

Schmitt trigger, has an input and an output end, and the input connects the connection of the 6th resistance and the 4th electric capacity End, the output end connect the testing result latch cicuit；

7th resistance, one end connect the connection end of the 6th resistance and the 4th electric capacity；

Second transistor, there is a base terminal, a collector terminal and an emitter-base bandgap grading end, the collector terminal connects the other end of the 7th resistance, The emitter-base bandgap grading end is grounded；

8th resistance, one end connect the base terminal of second transistor, and the other end connects the testing result latch cicuit and switch Circuit.

3. the circuit of installation detecting module according to claim 2, it is characterised in that the detecting pulse generating module is also Comprising：

Zener diode, there is an anode tap and a cathode terminal, anode tap ground connection, cathode terminal connection the 4th electric capacity and the 6th One end of resistance connection.

4. it is according to claim 2 installation detecting module circuit, it is characterised in that the resistance value of the 6th resistance with The capacitance of 4th electric capacity, make it is described detecting pulse generating module caused by pulse signal time interval for 3ms extremely 500ms。

5. it is according to claim 2 installation detecting module circuit, it is characterised in that the resistance value of the 6th resistance with The capacitance of 4th electric capacity, make it is described detecting pulse generating module caused by pulse signal time interval for 20ms extremely 50ms。

6. it is according to claim 2 installation detecting module circuit, it is characterised in that the capacitance of the 4th electric capacity with The resistance value of 7th resistance, make it is described detecting pulse generating module caused by pulse signal width for 1us extremely 100us。

7. it is according to claim 2 installation detecting module circuit, it is characterised in that the capacitance of the 4th electric capacity with The resistance value of 7th resistance, make it is described detecting pulse generating module caused by pulse signal width for 10us extremely 20us。

8. the circuit of installation detecting module according to claim 1, it is characterised in that the testing result latch cicuit bag Contain：

Second D flip-flop, there is a data input pin, a frequency input and an output end, data input pin connection should Driving voltage, the frequency input connect the detection decision circuit；

3rd OR gate, there is a first input end, one second input and an output end, it is close that the first input end connects the history The output end of special trigger, second input connect the output end of the second D flip-flop, and the output end connection of the 3rd OR gate The other end of the resistance and the on-off circuit.

9. the circuit of installation detecting module according to claim 1, it is characterised in that the on-off circuit includes：3rd Transistor, has a base terminal, a collector terminal and an emitter-base bandgap grading end, and the base terminal connects the output end of the 3rd OR gate, the collector terminal The one end in LED power loop is connected, the emitter-base bandgap grading end connects the detection decision circuit.

10. the circuit of installation detecting module according to claim 1, it is characterised in that the on-off circuit includes：Field effect Ying Guan, there is a base terminal, a collector terminal and an emitter-base bandgap grading end, the base terminal connects the output end of the 3rd OR gate, and the collector terminal connects The one end in LED power loop is connect, the emitter-base bandgap grading end connects the detection decision circuit.

11. the circuit of installation detecting module according to claim 1, it is characterised in that the detection decision circuit includes：

9th resistance, first end connects the emitter-base bandgap grading end of third transistor, and the other end of the 9th resistance connects LED power loop The other end；

Second comparator, there is a first input end, one second input and an output end, the setting of first input end connection one Signal, second input connects the first end of the 9th resistance, and the output end of the second comparator connects the triggering of the 2nd D types The frequency input of device.

12. the circuit of installation detecting module according to claim 11, it is characterised in that the detection decision circuit bag Include：

Second diode, has an anode tap and a cathode terminal, and the anode tap connects one end of the 9th resistance；

Second comparator, there is a first input end, one second input and an output end, the setting of first input end connection one Signal, second input connects the cathode terminal of the second diode, and the output end of the second comparator connects the second D flip-flop Frequency input；

3rd comparator, there is a first input end, one second input and an output end, first input end connection the two or two The cathode terminal of pole pipe, second input connects another setting signal, and the output end of the 3rd comparator connects the triggering of the 2nd D types The frequency input of device；

Tenth resistance, one end connection driving voltage；

11st resistance, one end connect the other end of the tenth resistance and the second input of the second comparator, other end ground connection；

5th electric capacity, with the 11st resistor coupled in parallel.

13. the circuit of the installation detecting module according to claim 11 or 12, it is characterised in that the electricity of the 9th resistance Resistance is between 0.1 ohm to 5 ohm.

14. the circuit of installation detecting module according to claim 6, it is characterised in that

The detecting pulse generating module includes：

6th resistance, one end connect a driving voltage；

8th resistance, one end connect the base terminal of second transistor, and the other end connects the testing result latch cicuit and switch Circuit；

Zener diode, there is an anode tap and a cathode terminal, anode tap ground connection, cathode terminal connection the 4th electric capacity and the 6th One end of resistance connection；

Also, the schmitt trigger, the testing result latch cicuit and second comparator, the 3rd ratio It is located at compared with device in an integrated circuit.

15. a kind of LED straight lamps, there is Double-End Source construction for electricity, it is characterised in that will with right in the LED straight lamps Seek the circuit of the installation detecting module any one of 1 to 14.