CN209105475U

CN209105475U - LED light

Info

Publication number: CN209105475U
Application number: CN201820105672.2U
Authority: CN
Inventors: 张跃强; 熊爱明; 叶奇峰; 江涛
Original assignee: Jiaxing Super Lighting Electric Appliance Co Ltd
Current assignee: Jiaxing Super Lighting Electric Appliance Co Ltd
Priority date: 2015-03-10
Filing date: 2015-09-25
Publication date: 2019-07-12
Anticipated expiration: 2025-09-02

Abstract

The utility model discloses a kind of LED light, one end or both ends have pin, it and include the rectification circuit, filter circuit and LED drive module being mutually coupled, the LED light also has filament artificial circuit, and the filament artificial circuit couples an at least pin of described LED light one end.Technical solution according to the present utility model, filament artificial circuit is coupled between two pins of described LED light the same end, for lamp tube drive circuit for detecting with filament at the beginning of starting, whether the filament for detecting fluorescent tube is normal, i.e., short-circuit or open circuit abnormal conditions do not occur for detecting filament.In the case where filament artificial circuit works normally, the lamp tube drive circuit of filament detecting confirms that filament is normal, and so that lamp tube drive circuit is normally started driving LED light and shine, therefore filament artificial circuit can enable the LED light for not having filament be compatible with the lamp holder of the existing lamp tube drive circuit with filament detecting, bring convenience for the use of user.

Description

LED light

The application, which is application No. is the 201590001018.1, applying date, is September in 2015 25, invention and created name is The divisional application of the utility application of LED straight lamp

Technical field

The utility model relates to field of illuminating device, and in particular to a kind of LED (light-emitting diode) lamp and Its component includes light source, electronic component and lamp cap.

Background technique

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

Known LED straight lamp generally comprises fluorescent tube, in fluorescent tube and has the circuit board of light source, and is set to fluorescent tube two The lamp cap at end, lamp cap is interior to be equipped with power supply, is electrically transferred to light source by circuit board from power supply.

Commercially available common electric ballast mainly can be divided into instantaneous starting type (Instant Start) electric ballast, journey Two kinds of electric ballast of sequence actuated type (Program Start).Electric ballast has resonance circuit, driving design and fluorescence The load characteristic of lamp matches, i.e., electric ballast is capacitive components before lighting in fluorescent lamp, and after lighting is resistive structure Part provides corresponding startup program, and lights fluorescent lamp correctly.And LED is nonlinear member, the spy with fluorescent lamp Property is entirely different.Therefore, LED straight lamp will affect the resonance design of electric ballast, and cause compatibility issue.It is general and Speech, program actuated type electric ballast can detect the presence of filament in fluorescent lamp, and traditional LED drive circuit can not be supported and It causes detecting failure and can not start.In addition, electric ballast is equivalent upper for current source, the direct current as LED straight lamp turns straight It when the power supply of stream transformer, be easy to cause overcurrent-overvoltage or undercurrent under-voltage, thus leads to electronic component damage or LED straight lamp Offer illumination can not be provided.

Come again, LED driving driving signal used is DC signal, however the driving signal of fluorescent lamp is the low of alternating current Frequently, the high frequency of low-voltage alternating-current signal or electric ballast, high-voltage alternating signal, in addition be applied to Emergency Light when, Emergency Light Battery be DC signal.Since voltage, the frequency range drop between different driving signal are big, simply rectified to generate DC driven signal needed for LED straight lamp can not achieve the compatibility of the drive system of LED straight lamp and conventional fluorescent.

Come again, the headlamp for directly replacing conventional fluorescent may have to simulate the group of filament in fluorescent lamp Part, but these common emulation components but have the risk that copying is lost after no small break down or its use The disadvantages of service life is not long, its use is not safe enough to user during lighting.Further, since the type of conventional fluorescent ballast and There are many design method, therefore the property difference between various types is big, if therefore supplying electricity to LED lamp, LED using conventional fluorescent ballast The electric current of lamp is easy risk that is higher and increasing over-voltage/overcurrent or energy consumption.

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

Summary of the invention

In view of this, the present invention provides a kind of LED light can improve with filament artificial circuit with filament The compatibility of the lamp tube drive circuit of detecting such as program actuated type ballast.Other beneficial effects and advantage of the utility model And unconventional optional implementation will be illustrated in conjunction with specific embodiment.

To achieve the above object, one aspect according to the present utility model provides a kind of LED lamp.

This LED light of the utility model, one end or both ends have pin, and include the rectified current being mutually coupled Road, filter circuit and LED drive module, the LED light also have filament artificial circuit, the filament artificial circuit coupling An at least pin of described LED light one end；The LED light also has fluorescent tube and lamp plate, and the lamp plate is arranged at the fluorescent tube It is interior；The LED drive module includes for luminous LED unit, and the LED unit includes LED and is arranged at the lamp plate On.

Optionally, the filament artificial circuit includes capacitor (1663) and resistance (1665) in parallel；The capacitor (1663) and the both ends of resistance (1665) are respectively coupled to two pins of described LED light the same end.

Optionally, the filament artificial circuit is coupled to the LED drive module (530) and described LED light one end Between one pin (501/502/503/504), the filament artificial circuit includes the resistance (1665) and an electricity being connected in parallel Hold (1663), and the capacitor (1663) and a common end in parallel of resistance (1665) and the LED drive module (530) coupling It connects.

Optionally, the rectification circuit be coupled to the filament artificial circuit and the LED drive module (530) it Between.

Optionally, the filament artificial circuit includes capacitor (1663) and resistance (1665) in parallel；The capacitor (1663) and resistance (1665) be coupled to the LED drive module (530) and described LED light one end a pin (501) it Between；The LED light also includes another filament artificial circuit, and another filament artificial circuit includes another capacitor in parallel (1663) and another resistance (1665)；Another capacitor (1663) and another resistance (1665) are coupled to the LED driving mould Between block (530) and another pin (502) at the LED light end.

Optionally, the filament artificial circuit includes first capacitor (1763), the second capacitor (1764), first resistor (1765) and second resistance (1766), in which: first capacitor (1763) and the second capacitor (1764) are series at the LED light Between two pins of the same end；First resistor (1765) and second resistance (1766) are also series between described two pins； The tie point of the first capacitor (1763) and the second capacitor (1764), with first resistor (1765) and second resistance (1766) Tie point coupling.

Optionally, the filament artificial circuit includes negative temperature coefficient resister, is coupled to the two of LED lamp the same end Between a pin.

Optionally, the resistance value of the filament artificial circuit is 10 ohm or more at 25 DEG C；The LED light normally starts When, the resistance value of filament artificial circuit is down to 2~10 ohm.

Optionally, the LED light also has a capacitor (925)；The capacitor is coupled to the filament artificial circuit and institute It states between rectification circuit, and is connected in parallel with the rectification circuit.

Optionally, the rectification circuit includes first diode (611), the second diode (612), third diode (613) and the 4th diode (614), wherein the cathode of second diode (612) and the 4th diode (614) anode couples two pins of a described LED light the same end wherein pin (501), the first diode (611) The anode of cathode and the third diode (613) couples another pin (502) of described two pins, and the described 1st Pole pipe (611) is connected with the anode of the second diode (612), and the third diode (613) and the 4th diode (614) cathode is connected.

Optionally, the both ends of the capacitor are respectively coupled to two pins of described LED light the same end.

Optionally, the LED light also has a ballast circuit for detecting (1590,1690)；The ballast circuit for detecting coupling It is connected in parallel between the filament artificial circuit and the rectification circuit, and with the rectification circuit；And the ballast detecting Circuit is for detecting the signal inputted by a pin (501) or another pin (502) of described LED light the same end, with judgement Whether the ballast circuit for detecting is connected an electric current as caused by the signal.

Optionally, the ballast circuit for detecting includes an inductance (1694) or a switching switch (1799).

Optionally, the ballast circuit for detecting includes the inductance (1694) and a bidirectional triode thyristor being connected in series (1699)；And the ballast circuit for detecting decides whether to trigger the bidirectional triode thyristor according to the size of the input signal (1699) it is connected.

Optionally, the rectification circuit includes the first rectification circuit (510) and the second rectification circuit (540/810), described Ballast circuit for detecting is coupled between first rectification circuit (510) and the second rectification circuit (540/810), and the ballast One end of circuit for detecting is connect with first rectification circuit (510), the other end of the ballast circuit for detecting and described second Rectification circuit (540/810) connection.

It optionally, include driving circuit (1530) and LED module (630), the driving circuit in the LED drive module For carrying out electrical power conversion, to drive the LED module to shine.

Optionally, the driving circuit includes controller (1531) and conversion circuit (1532)；The conversion circuit coupling The output end of the filter circuit converts signal after filtering with signal after accepting filter, and according to the control of the controller It is exported at driving signal, to drive LED module.

Optionally, the rectification circuit is for receiving the signal inputted by the one or both ends of the LED light, and institute State driving circuit for receive it is rectified after the input signal and electric power carried out to the input signal after rectified turn It changes.

Optionally, the filter circuit is used to receive the output of the rectification circuit so that generate it is described it is rectified after Input signal.

Optionally, the driving circuit includes controller (2631) and conversion circuit (2632)；The conversion circuit It (2632) include switching circuit (2635) and accumulator (2638), the accumulator (2638) couples the LED module (630)；The controller (2631) couples the output end of the driving circuit, and for receiving current sense signal (S539), To determine conducting and deadline and then the driving signal for controlling driving circuit output of switching circuit (2635)；Its In, the current sense signal (S539) represents the size of current of the accumulator (2638), or represents and flow through the LED mould The size of the electric current of block.

Optionally, the accumulator (2638) includes inductance, and the driving circuit includes inductance, the driving circuit The inductance to the inductance mutual inductance in the accumulator (2638) with detecting current.

Optionally, the filament artificial circuit is coupled to the LED drive module (530) and described LED light one end Between an at least pin, and the filament artificial circuit includes a resistance (1665) or a capacitor (1663).

Optionally, the LED light also has endpoint conversion circuit (541), and the endpoint conversion circuit is coupled in the LED Between drive module (530) and two pins of described LED light the same end.

Optionally, the endpoint conversion circuit includes the capacitor and a resistance being connected in parallel.

Optionally, the rectification circuit include the endpoint conversion circuit, or be coupled to the endpoint conversion circuit and Between the LED drive module (530).

Optionally, the filament artificial circuit constitutes endpoint conversion circuit (541), and the filament artificial circuit includes two Resistance is series between two pins of described LED light the same end, and the tie point between described two resistance be coupled to it is described LED drive module (530).

Another aspect according to the present utility model provides another LED light.

This LED light of the utility model, one end or both ends have pin, and include the rectified current being mutually coupled Road, filter circuit and LED module (630), the LED light also have fluorescent tube and lamp plate, and the lamp plate is arranged at the lamp In pipe；The LED module includes for luminous LED unit, and the LED unit includes LED and is arranged on the lamp plate； The LED light also has capacitor and another capacitor, and the capacitor is coupled to an at least pin (501/ of LED lamp one end 502), another capacitor is coupled to an at least pin (503/504) for the LED light other end；The rectification circuit coupling Between the capacitor (1663/642/743/843/1763/825) and the LED module (630), it is also coupled in described another Between capacitor and the LED module (630), the rectification circuit is for inputting the one or both ends by the LED lamp Signal rectified；The filter circuit is coupled between the rectification circuit and the LED module (630), and is used for Signal from the rectification circuit is filtered.

Another aspect according to the present utility model, provides another LED light.

This LED light of the utility model, one end or both ends have pin, and include the rectified current being mutually coupled Road, filter circuit and LED module (630), the LED light also have fluorescent tube and lamp plate, and the lamp plate is arranged at the lamp In pipe；The LED module (630) includes for luminous LED unit, and the LED unit includes LED and is arranged at described On lamp plate；The LED light also has current-limiting circuit, and the current-limiting circuit is coupled to the pin (501/ of LED lamp one end 502) and for limiting the electric current for flowing through the LED light；The rectification circuit is coupled to the current-limiting circuit and for by institute The signal that the one or both ends of LED light are inputted is stated to be rectified；The filter circuit be coupled to the rectification circuit and Between the LED module (630), and for being filtered to the signal from the rectification circuit；The LED lamp also has First filament artificial circuit and the second filament artificial circuit, the first filament artificial circuit are coupled to described LED light one end Pin (501/502), the second filament artificial circuit are coupled to the pin (503/504) of the LED light other end.

This LED light of the utility model, one end or both ends have pin, and include be mutually coupled it is first whole Current circuit (510), the second rectification circuit (540), filter circuit and LED module (630), the LED light also have fluorescent tube And lamp plate, the lamp plate are arranged in the fluorescent tube；The LED module (630) includes for luminous LED unit (632/ 732), the LED unit (632/732) includes LED and is arranged on the lamp plate；First rectification circuit (510) coupling It is connected to the pin of described LED light one end and includes diode, it is another that second rectification circuit (540) is coupled to the LED light The pin (503) at end and include two diodes (711,712；811,812), two two of second rectification circuit (540) Tie point connection between pole pipe is belonging respectively to the positive electrode and negative electrode of described two diodes；First rectification circuit (510) And the signal that second rectification circuit (540) is used to input the one or both ends by the LED light rectifies；Institute It states filter circuit to be coupled between the rectification circuit and the LED module (630), and for from the rectified current The signal on road is filtered；The LED light also have drop EMI element, be coupled to the pin (503) of the LED light other end with And between the tie point between two diodes of second rectification circuit (540).

Optionally, the capacitor (1663/1763) and another capacitor (1663/1763) system are as filament artificial circuit, institute State the pin (501/502/503/ that filament artificial circuit is coupled to the LED module (630) and LED lamp one end 504) between.

Optionally, the filament artificial circuit includes the capacitor (1663/1763) and resistance (1665/ in parallel 1765)。

Optionally, the both ends of the capacitor (1663/1763) and the resistance (1665/1765) are respectively coupled to the LED Two pins of lamp the same end.

Optionally, the capacitor (642/743/843) and another capacitor (642/743/843) system are as endpoint conversion circuit (541) or with current-limiting function.

Optionally, the rectification circuit include the first rectification circuit (510) and the second rectification circuit (540), described first Rectification circuit (510) includes or is coupled to the current-limiting circuit, and second rectification circuit (540) is coupled to the LED module (630) and between the second filament artificial circuit.

Optionally, the first filament artificial circuit includes two pins that impedor is coupled to described LED light one end (501,502) between；The second filament artificial circuit includes two pins that impedor is coupled to the LED light other end (503,504) between.

Optionally, the drop EMI element includes capacitor (1663/1763/1764) and is as filament artificial circuit.

Optionally, the drop EMI element (642/743/744/843/844/842) belong to endpoint conversion circuit (541) and Have the function of limiting electric current.

Optionally, the filter circuit includes capacitor (625) and in parallel with the LED unit (632/732), and is coupled In two diode one of them (811) of second rectification circuit (540) anode and another one (812) cathode it Between.

Optionally, first rectification circuit (510) includes first diode (611), the second diode (612), third Diode (613) and the 4th diode (614), wherein the cathode of second diode (612) and the four or two pole The anode of pipe (614) couples two pins of a described LED light one end wherein pin (501), the first diode (611) The anode of cathode and the third diode (613) couples another pin (502) of described two pins in end, and the described 1st Pole pipe (611) is connected with the anode of the second diode (612), and the third diode (613) and the 4th diode (614) cathode is connected.

Optionally, the LED light also has impedor (828), the impedor (828) and the capacitor (825) Or another capacitor (825) is parallel to a pin (501/502/503/504) and the rectification circuit of described LED light one end (510/540) between.

Technical solution according to the present utility model, filament artificial circuit are coupled at least one positioned at LED lamp one end Pin, for the lamp tube drive circuit for detecting with filament at the beginning of starting, whether the filament for detecting fluorescent tube is normal, i.e. detecting lamp The abnormal conditions of short circuit or open circuit do not occur for silk.In the case where filament artificial circuit works normally, the fluorescent tube of filament detecting is driven Dynamic circuit confirms that filament is normal, and so that lamp tube drive circuit is normally started driving LED light and shine, therefore filament artificial circuit can So that the LED light for not having filament can be compatible with the lamp holder of the existing lamp tube drive circuit with filament detecting, it is user's Using bringing convenience.

Detailed description of the invention

Attached drawing for a better understanding of the present invention, does not constitute an undue limitation on the present invention.Wherein:

Fig. 1 is a perspective view, shows the LED straight lamp of an embodiment of the present invention；

Fig. 2 is a stereogram exploded view, shows the LED straight lamp of Fig. 1；Fig. 3 A is according to some embodiments of the utility model The block diagram of the exemplary power mould group 250 of LED straight lamp；

Fig. 3 B is the block diagram according to the exemplary power mould group 250 of the LED straight lamp of some embodiments of the utility model；

Fig. 3 C is the block diagram according to the exemplary L ED lamp of some embodiments of the utility model；

Fig. 3 D is the block diagram according to the exemplary power mould group 250 of the LED straight lamp of some embodiments of the utility model；

Fig. 3 E is the block diagram according to the LED light of some embodiments of the utility model；

Fig. 4 A is the schematic diagram according to the rectification circuit of some embodiments of the utility model；

Fig. 4 B is the schematic diagram according to the rectification circuit of some embodiments of the utility model；

Fig. 4 C is the schematic diagram according to the rectification circuit of some embodiments of the utility model；

Fig. 4 D is the schematic diagram according to the rectification circuit of some embodiments of the utility model；

Fig. 5 A is the schematic diagram according to the endpoint conversion circuit of some embodiments of the utility model；

Fig. 5 B is the schematic diagram according to the endpoint conversion circuit of some embodiments of the utility model；

Fig. 5 C is the schematic diagram according to the endpoint conversion circuit of some embodiments of the utility model；

Fig. 5 D is the schematic diagram according to the endpoint conversion circuit of some embodiments of the utility model；

Fig. 6 A is the block diagram according to the filter circuit of some embodiments of the utility model；

Fig. 6 B is the schematic diagram according to the filter unit of some embodiments of the utility model；

Fig. 6 C is the schematic diagram according to the filter unit of some embodiments of the utility model；

Fig. 6 D is the schematic diagram according to the filter unit of some embodiments of the utility model；

Fig. 6 E is the schematic diagram according to the filter unit of some embodiments of the utility model；

Fig. 7 A is the schematic diagram according to the LED module of some embodiments of the utility model；

Fig. 7 B is the schematic diagram according to the LED module of some embodiments of the utility model；

Fig. 7 C is the plan view according to the circuit layout of the LED module of some embodiments of the utility model；

Fig. 7 D is the plan view according to the circuit layout of the LED module of some embodiments of the utility model；

Fig. 7 E is the plan view according to the circuit layout of the LED module of some embodiments of the utility model；

Fig. 8 A is the block diagram according to the exemplary power mould group of the LED light of some embodiments of the utility model；

Fig. 8 B is the block diagram according to the driving circuit of some embodiments of the utility model；

Fig. 8 C is the schematic diagram according to the driving circuit of some embodiments of the utility model；

Fig. 8 D is the schematic diagram according to the driving circuit of some embodiments of the utility model；

Fig. 8 E is the schematic diagram according to the driving circuit of some embodiments of the utility model；

Fig. 8 F is the schematic diagram according to the driving circuit of some embodiments of the utility model；

Fig. 8 G is the block diagram according to the driving circuit of some embodiments of the utility model；

Fig. 8 H is according to the relation schematic diagram between the voltage Vin and electric current Iout of an embodiment of the present invention；

Fig. 9 A is the block diagram according to the exemplary power mould group of the LED light of some embodiments of the utility model；

Fig. 9 B is the schematic diagram according to the anti-flicker circuit of an embodiment of the present invention；

Figure 10 A is the block diagram according to the exemplary power mould group of the LED light of some embodiments of the utility model；

Figure 10 B is the schematic diagram according to the protection circuit of an embodiment of the present invention；

Figure 11 A is the block diagram according to the exemplary power mould group of the LED light of some embodiments of the utility model；

Figure 11 B is the schematic diagram according to the mode switching circuit of some embodiments of the utility model；

Figure 11 C is the schematic diagram according to the mode switching circuit of some embodiments of the utility model；

Figure 11 D is the schematic diagram according to the mode switching circuit of some embodiments of the utility model；

Figure 11 E is the schematic diagram according to the mode switching circuit of some embodiments of the utility model；

Figure 11 F is the schematic diagram according to the mode switching circuit of some embodiments of the utility model；

Figure 11 G is the schematic diagram according to the mode switching circuit of some embodiments of the utility model；

Figure 11 H is the schematic diagram according to the mode switching circuit of some embodiments of the utility model；

Figure 11 I is the schematic diagram according to the mode switching circuit of some embodiments of the utility model；

Figure 12 A is the block diagram according to the exemplary power mould group of the LED light of some embodiments of the utility model；

Figure 12 B is the block diagram according to the exemplary power mould group of the LED light of some embodiments of the utility model；

Figure 12 C is the configuration according to the ballast compatible circuit of the utility model embodiment；

Figure 12 D is the block diagram according to the exemplary power mould group of the LED light of some embodiments of the utility model；

Figure 12 E is the block diagram according to the exemplary power mould group of the LED light of some embodiments of the utility model；

Figure 12 F is the schematic diagram according to the ballast compatible circuit of some embodiments of the utility model；

Figure 12 G is the block diagram according to the exemplary power mould group of the LED straight lamp of some embodiments of the utility model；

Figure 12 H is the schematic diagram according to the ballast compatible circuit of some embodiments of the utility model；

Figure 12 I is the schematic diagram according to the ballast compatible circuit of some embodiments of the utility model；

Figure 13 A is the block diagram according to the exemplary power mould group of the LED straight lamp of some embodiments of the utility model；

Figure 13 B is the block diagram according to the exemplary power mould group of the LED straight lamp of some embodiments of the utility model；

Figure 13 C is the block diagram according to the exemplary power mould group of the LED straight lamp of some embodiments of the utility model；

Figure 13 D is according to the schematic diagram of the ballast compatible circuit of some embodiments of the utility model, the ballast compatible circuit It can be applied to embodiment shown in Figure 13 A and Figure 13 B and its modification；

Figure 14 A is the block diagram according to the exemplary power mould group of the LED straight lamp of some embodiments of the utility model；

Figure 14 B is the schematic diagram according to the filament artificial circuit of some embodiments of the utility model；

Figure 14 C is the block schematic diagram according to the filament artificial circuit of some embodiments of the utility model；

Figure 14 D is the block schematic diagram according to the filament artificial circuit of some embodiments of the utility model；

Figure 14 E is the schematic diagram according to the filament artificial circuit of some embodiments of the utility model；

Figure 14 F is the block schematic diagram according to the filament artificial circuit of some embodiments of the utility model；

Figure 15 A is the block diagram according to the exemplary power mould group of the LED straight lamp of some embodiments of the utility model；

Figure 15 B is the schematic diagram according to the overvoltage crowbar of the utility model embodiment；

Figure 16 A is the block diagram according to the exemplary power mould group of the LED straight lamp of some embodiments of the utility model；

Figure 16 B is the block diagram according to the exemplary power mould group of the LED straight lamp of some embodiments of the utility model；

Figure 16 C is the block diagram according to the ballast circuit for detecting of some embodiments of the utility model；

Figure 16 D is the schematic diagram according to the ballast circuit for detecting of some embodiments of the utility model；

Figure 16 E is the schematic diagram according to the ballast circuit for detecting of some embodiments of the utility model；

Figure 17 A is the block diagram according to the exemplary power mould group of the LED straight lamp of some embodiments of the utility model；

Figure 17 B is the block diagram according to the exemplary power mould group of the LED straight lamp of some embodiments of the utility model；

Figure 17 C is the schematic diagram according to the auxiliary power module of the utility model embodiment；

Figure 18 is the block diagram according to the exemplary power mould group of the LED straight lamp of some embodiments of the utility model.

Specific embodiment

It explains below in conjunction with attached drawing to exemplary embodiment of the invention, including embodiment of the present invention Various details should think them only exemplary to help understanding.Therefore, those of ordinary skill in the art should recognize Know, various changes and modifications can be made to embodiment described herein, without departing from scope and spirit of the present invention. Equally, for clarity and conciseness, descriptions of well-known functions and structures are omitted from the following description.

Present disclose provides a kind of new LED straight lamps.The disclosure is described in the following embodiments with reference to the accompanying drawings.This The following description of the various embodiments of the utility model presented in text is only used for diagram and exemplary purpose, without being intended to It is exclusive or be limited to exact form disclosed.These example embodiments are only example, and are not needed provided herein Many embodiments of details and variation are possible.It should again be emphasized that present disclose provides the details of alternative exemplary, still The display of these substitutions is not exclusive.Moreover, the consistent of any details between various examples should be understood to need this The details of sample, it is unpractiaca for displaying each possible variation for each feature described herein after all.Determining this It should refer to the record in claims when the requirement of utility model.

In the accompanying drawings, the size and relative size of component can amplify in order to clear.In entire attached drawing, identical attached drawing Label refers to identical element.

Technical term used herein is just for the sake of description specific embodiment, and without being intended to limitation, this is practical new Type.In term as used herein, singular " one (a) " or " one (an) " are intended to also include plural form, unless on Hereafter clearly dictate otherwise.In term as used herein, term "and/or" includes one or more associated listed Either term and all combinations in term, and "/" can be abbreviated as.

It should be understood that although may have been used term first, second, third, etc. herein describe various elements, component, Region, layer or step, but these elements, component, region, layer and/or step should not be limited by these terms.Unless context It is further noted that otherwise these terms are only used to by an element, component, area, floor or step and another element, component, region, floor Or step distinguishes, such as naming convention.Therefore, without departing from the introduction of the utility model, exist below First element, component, area, floor or the step discussed in a chapters and sections in specification in another chapters and sections of specification or can be weighed Benefit is named as second element, component, region, layer or step in requiring.In addition, in some cases, even if in the description Without using the Terminologies such as " first ", " second ", but the term may be still referred to as " first " or " in detail in the claims Two " to be distinguished from each other to the different elements of record.

It will also be appreciated that these terms are enumerated recorded when using term " includes " or "comprising" in the description Feature, region, integer, step, operation, the presence of element and/or component, but be not excluded for one or more of the other feature, Region, integer, step, operation, the presence or addition of element and/or component.

It should be understood that when element is referred to as " connection " or when " coupled " to another element or another element "upper", which can To be directly connected or coupled on another element or another element, or may exist intermediary element.On the contrary, when element is referred to as When " being directly connected to " or " directly coupling " arrives another element, intermediary element is not present.For describe the relationship between element its Its word should in a similar way (for example, " between " with " directly between ", " adjacent " and " direct neighbor " etc.) explain.So And terms used herein " contact " refer to directly contact (that is, touching), unless context also points out.

Embodiment described herein will be described by ideal schematic diagram reference plane figure and/or cross-sectional view.Therefore, Example view may depend on manufacturing technology and/or tolerance is modified.Therefore, the disclosed embodiments are not limited in the view It is those of shown, and it is included in the modification of the configuration formed on the basis of manufacturing process.Therefore, exemplary region can in figure Shape with illustrative nature, and region shown in the figure exemplary can enumerate the shape in the region of element, but this is practical new The various aspects of type are not limited to this.

Herein can be used spatially relative term, such as " ... under ", " lower section ", "lower", " top ", "upper" in order to The relationship of an elements or features and another elements or features shown in the drawings is described.It will be appreciated that except being retouched in attached drawing Except the orientation drawn, spatially relative term is intended to cover the different orientation of device in use or operation.For example, if in attached drawing Device be reversed, then being described as be in the elements or features of other elements or features " below " or " under " will be oriented to In other elements or features " top ".Therefore, term " lower section " can cover above and below orientation.Described device can be with it Its mode is orientated and (is rotated by 90 ° or in other orientations), and the opposite description in space used herein all should be solved correspondingly It releases.

The term used when herein by reference to orientation, layout, position, shape, size, quantity or other measurements such as " identical ", " equal ", " plane " or " coplanar " is not necessarily mean that lucky same orientation, layout, position, shape, size, quantity or other Measurement, but it is intended to cover the almost the same orientation within the scope of the acceptable variation that for example may cause due to manufacturing process, cloth Office, position, shape, size, quantity or other measurements.Term " basic " can be used to reflect the meaning herein.

Term such as "about" or "approximately" can reflect only in relatively small mode and/or not significantly change the behaviour of certain elements Make, size, orientation or the layout of the form variation of function or structure.For example, can cover for example from the range of " about 0.1 to about 1 " Near 0.1 deviation 0%-5% and near 1 deviation 0% to 5% range, especially if this deviation maintain and institute The identical influence of column range.

Unless otherwise defined, all terms (including technical and scientific term) used herein have field described in the disclosure The normally understood identical meaning of those of ordinary skill.It should also be understood that term, such as those are answered defined in the common dictionary When being interpreted as having and their consistent meanings of meaning in the context of related fields and/or the application, and do not answer It is explained with meaning that is Utopian or excessively formalizing, unless being clearly so defined herein.

As used herein, the item for being described as " being electrically connected " is configured so that electric signal can be transmitted to from one Another.Therefore, passive isolation component is physically connected to (for example, the prepreg layer of printed circuit board, insulating binder connect Two devices, insulating bottom layer filler or mold layer etc.) passive conductive component (for example, conducting wire, pad, internal electric route etc.) It is not connected electrically to the component.In addition, the item " being directly electrically connected " each other passes through one or more passive elements, such as lead The electrical connection such as line, pad, internal electric route, resistance.In this way, directly electrical connection component is not comprising all by active component The component being electrically connected such as transistor or diode.

It is described as being thermally connected or the component of thermal communication is arranged into so that heat can follow the path between component, to permit Perhaps heat is transmitted to second component from first component.Simply because a part that two components are identity unit or plate can not make it Be thermally connected.Generally, thermally conductive or be directly connected to other thermally conductive or generating component component and (or connected by intermediate thermal conductivity component It is connected to these components or so close to a large amount of transmitting for alloing heat) it will be described as being thermally connected to these components, or and this A little component thermal communications.In contrast, two components of heat insulator are not described as being connected thermally to one another or thermal communication between, Wherein the material significantly prevents the heat transmitting between two components, or only allows subsidiary heat transmitting.Term " thermally conductive " is simultaneously uncomfortable For providing subsidiary thermally conductive any material, and it is intended to the good conductor or known with for passing that finger is typically considered heat Pass the material of the purposes of heat, or the component with the heating conduction similar with these materials.

Fig. 1 and Fig. 2 are please referred to, the utility model provides a kind of LED straight lamp in an embodiment comprising: a fluorescent tube 1, one it is set to the LED lamp panel 2 in fluorescent tube 1, and is respectively arranged on the lamp cap 3 at 1 both ends of fluorescent tube.Fluorescent tube 1 can use plastics fluorescent tube Or glass lamp, the size of both ends lamp cap 3 are identical or different.Please continue to refer to Fig. 2, in one embodiment, LED Lamp plate 2 is equipped with several LED light sources 202, is equipped with power supply 5 in lamp cap 3, passes through LED lamp panel 2 between LED light source 202 and power supply 5 Electrical communication.Power supply 5 can be individually integrated unit (i.e. all power source means are all integrated in a modular unit), and set In the lamp cap 3 of 1 one end of fluorescent tube；Or power supply 5 can also be divided into two individual units (i.e. all power source means are divided into two A part), and two individual units are respectively arranged in the lamp cap 3 of lamp tube ends.If fluorescent tube 1, which only has one end, passes through glass When the processing of glass tempering is strengthened, power supply 5 is preferentially selected as individually integrated unit, and is set to lamp corresponding to the reinforcing end of fluorescent tube 1 In first 3.Power supply mould group 250 is arranged on above-mentioned power supply 5.The circuit design and application of power supply mould group 250 will be illustrated next Example.

Fig. 3 A is the block schematic diagram according to the power supply mould group of the LED straight lamp of the utility model embodiment.Referring to Fig. 3 A, AC power source 508 is provided for AC power source signal, and AC power source 508 can be alternating current, voltage range such as 100- 277V, frequency are, for example, 50 or 60Hz.Lamp tube drive circuit 505 receives the AC power source signal of AC power source 508, and converts At alternating-current driving signal using as external drive signal.Lamp tube drive circuit 505 can be, for example, electric ballast, to by city The signal conversion of electricity forms the alternating-current driving signal of high frequency, high pressure.The type of common electronics ballast, such as: instantaneous starting type (Instant Start) electric ballast, program actuated type (Program Start) electric ballast, quick-starting direct (Rapid Start) electric ballast etc., the LED straight lamp of the utility model are applicable in.The voltage of alternating-current driving signal is greater than 300V, preferable voltage range are between about 400-700V.The frequency of alternating-current driving signal is greater than 10kHz, preferable frequency model It encloses between about 20k-50kHz.LED straight lamp 500 receives external drive signal, and is driven to emit light.In one embodiment, External drive signal includes the alternating-current driving signal from lamp tube drive circuit 505.In one embodiment, LED straight lamp 500 In following drive environment, i.e., LED straight lamp 500 is powered at one end lamp cap, and there are two conductive connecting pins for lamp cap tool 501,502, two conductive connecting pins 501,502 are couple to lamp tube drive circuit 505, to receive external drive signal.The present embodiment Two conductive connecting pins 501,502 be directly or indirectly electrically connected to lamp tube drive circuit 505.

It is worth noting that, lamp tube drive circuit 505 can be omitted, therefore indicated in the example shown with dotted line.In a reality It applies in example, when lamp tube drive circuit 505 omits, AC power source 508 is directly connected to pin 501,502, at this point, pin 501,502 AC power source signal is received, using as external drive signal.

Other than the application of above-mentioned single ended power supply, the LED straight lamp 500 of the utility model can also be applied to both-end electricity There is a pin in source with every one end in the both ends of LED lamp tube.Fig. 3 B is referred to, for according to some implementations of the utility model The block schematic diagram of the power supply mould group 250 of the LED straight lamp of example.Referring to Fig. 3 B, compared to shown in Fig. 3 A, 501,502 points of pin The opposite both-end lamp cap for not being placed in LED straight lamp 500 forms single pin with every one end of LED straight lamp 500, remaining electricity Road connection and function are then identical as circuit shown in Fig. 3 A.

Fig. 3 C is the circuit box schematic diagram according to the LED light of the utility model one embodiment.Referring to Fig. 3 C, LED light Power supply mould group mainly include rectification circuit 510, filter circuit 520 and LED drive module 530.Rectification circuit 510 couples Pin 501, pin 502 to receive external drive signal, and rectify external drive signal, then by output end 511, Signal after 512 output rectifications.External drive signal in this can be the alternating-current driving signal or alternating current in Fig. 3 A and Fig. 3 B The operation that source signal is possibly even DC signal without influencing the utility model LED light.Filter circuit 520 and described the One rectification circuit coupling, to be filtered to generate signal after filtering, as recorded in claims to signal after rectification 's.For example, filter circuit 520 couples output end 511,512 to receive signal after rectification, and signal after rectification is filtered, Then by signal after the output filtering of output end 521,522.LED drive module 530 and filter circuit 520 couple, to accept filter It signal and shines afterwards.For example, LED drive module 530 couples output end 521,522 with signal after accepting filter, then drive LED unit (not drawing) in LED drive module 530 shines.The explanation of embodiment after this part please be detailed in.

It is worth noting that, in the drawings, the quantity of output end 511,512 and output end 521,522 is two, And port or end when practical application between rectification circuit 510, filter circuit 520 and LED drive module 530 for coupling The demand that the number of son can be transmitted according to signal between each circuit or device is one or more.

Furthermore each embodiment of the power supply mould group of the power supply mould group and following LED light of LED light shown in Fig. 3 C, except suitable Outside for LED straight lamp shown in Fig. 3 A and Fig. 3 B, for the illuminating circuit framework comprising two pins to transmit electric power, example Such as: the lamp holder of a variety of different headlamps such as bulb lamp, PAL lamp, intubation energy-saving lamp (PLS lamp, PLD lamp, PLT lamp, PLL lamp) Specification is applicable in.

Fig. 3 D is the block diagram according to the power supply mould group 250 of the LED straight lamp of the utility model embodiment.Referring to Fig. 3 D, AC power source 508 is provided for AC power source signal.Lamp tube drive circuit 505 receives AC power source signal, and converts conclusion of the business Stream driving signal.LED straight lamp 500 receives the alternating-current driving signal of lamp tube drive circuit 505, and is driven to emit light.In this reality It applies in example, LED straight lamp 500 is both-end (each double pins) power supply, and one end lamp cap of fluorescent tube has pin 501, pin 502, separately One end lamp cap has pin 503, pin 504.Pin 501, pin 502, pin 503 and pin 504 are coupled to fluorescent tube driving electricity Road 505 to receive alternating-current driving signal jointly, to drive the LED unit (not drawing) in LED straight lamp 500 to shine.Alternating current Source 508 can be alternating current, and lamp tube drive circuit 505 can be stabilizer or electric ballast.

Fig. 3 E is the block diagram according to the LED light of the utility model embodiment.Referring to Fig. 3 E, the power supply mould group master of LED light It to include rectification circuit 510, filter circuit 520, LED drive module 530 and rectification circuit 540.Rectification circuit 510 connects Foot 501, pin 502, to the external drive signal for receiving and rectifying pin 501, pin 502 is transmitted；Rectification circuit 540 Pin 503, pin 504 are coupled, to the external drive signal for receiving and rectifying pin 503, pin 504 is transmitted.Namely It says, the power supply mould group of LED light may include rectification circuit 510 and rectification circuit 540 and export rectification in output end 511,512 jointly Signal afterwards.Filter circuit 520 couples output end 511,512 to receive signal after rectification, and is filtered to signal after rectification, so Afterwards by signal after the output filtering of output end 521,522.After LED drive module 530 couples output end 521,522 to accept filter Then signal drives the LED unit (not drawing) in LED drive module 530 to shine.

The LED that the power supply mould group of the LED light of the embodiment of Fig. 3 E can be applied to the Double-End Source framework with Fig. 3 D is straight Spot 500.Significantly, since the power supply mould group of the LED lamp of the present embodiment has rectification circuit 510 and rectification simultaneously Circuit 540, so the power supply mould group of LED light can also be applied to the single ended power supply framework of Fig. 3 A, B, to receive external drive news Number (including AC power source signal, the alternating-current driving signal etc. in previous embodiment).Other embodiments in the present embodiment and text The power supply mould group of LED light can also be applied to DC signal.

Fig. 4 A is the schematic diagram according to the rectification circuit of the utility model embodiment.A referring to fig. 4, rectification circuit 610 include Rectifier diode 611,612,613 and 614, to carry out full-wave rectification to the received signal of institute.The anode of rectifier diode 611 Output end 512 is coupled, cathode couples pin 502.The anode coupling output end 512 of rectifier diode 612, cathode couple pin 501.The anode coupling pin 502 of rectifier diode 613, cathode couple output end 511.The anode coupling of rectifier diode 614 Pin 501, cathode couple output end 511.

When pin 501, the received signal of pin 502 are AC signal, the operation of rectification circuit 610 is described as follows.When When AC signal is in positive half-wave, AC signal sequentially flows after pin 501, rectifier diode 614 and rectification output end 511 Enter, and is sequentially flowed out after rectified output end 512, rectifier diode 611 and pin 502.When AC signal is in negative half-wave, AC signal sequentially flows into after pin 502, rectifier diode 613 and rectification output end 511, and sequentially rectified output end 512, it is flowed out after rectifier diode 612 and pin 501.Therefore, no matter AC signal is in positive half-wave or negative half-wave, rectification circuit The anode of signal is respectively positioned on rectification output end 511 after 610 rectification, and cathode is respectively positioned on rectification output end 512.According to aforesaid operations Illustrate, signal is signal after full-wave rectification after the output of rectification circuit 610 or the rectification generated.

When pin 501, pin 502 couple DC power supply and receive DC signal, the operation description of rectification circuit 610 is such as Under.When pin 501 couples the anode (anode) of DC power supply and pin 502 couples negative terminal (cathode) of DC power supply, DC signal sequentially flows into after pin 501, rectifier diode 614 and rectification output end 511, and sequentially rectified output end 512, it is flowed out after rectifier diode 611 and pin 502.When pin 501 couple DC power supply negative terminal and pin 502 couple direct current When the anode of power supply, AC signal is sequentially flowed into after pin 502, rectifier diode 613 and rectification output end 511, and sequentially It is flowed out after rectified output end 512, rectifier diode 612 and pin 501.Similarly, no matter how DC signal passes through pin 501, pin 502 inputs, and the anode of signal is respectively positioned on rectification output end 511 after the rectification of rectification circuit 610, and cathode is respectively positioned on Rectification output end 512.

Therefore, no matter the received signals of the institute of rectification circuit 610 in the present embodiment are AC signal or DC signal, Output generates signal after rectification.

Fig. 4 B is the schematic diagram according to the rectification circuit of the utility model embodiment.B referring to fig. 4, rectification circuit 710 include Rectifier diode 711 and rectifier diode 712, to carry out halfwave rectifier to the received signal of institute.Rectifier diode 711 is just End coupling pin 502, negative terminal couple rectification output end 511.The anode of rectifier diode 712 couples rectification output end 511, negative terminal Couple pin 501.Rectification output end 512 can be omitted or be grounded depending on practical application.

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

In one embodiment, when AC signal is in positive half-wave, AC signal is quasi- in the signal that pin 501 inputs Position is higher than the signal reference position inputted in pin 502.At this point, rectifier diode 711 and rectifier diode 712 be in it is inverse inclined Off state, rectification circuit 710 stop signal after output rectification.When AC signal is in negative half-wave, AC signal is in pin The signal reference position of 501 inputs is lower than the signal reference position inputted in pin 502.At this point, rectifier diode 711 and rectifier diode 712 are in along inclined on state, and AC signal is flowed into via rectifier diode 711, rectification output end 511, and by whole Flow the other end or the ground terminal outflow of output end 512 or LED straight lamp.According to aforesaid operations illustrate, rectification circuit 710 output or Signal is signal after halfwave rectifier after the rectification of generation.

Fig. 4 C is the schematic diagram according to the rectification circuit of the utility model embodiment.C referring to fig. 4, rectification circuit 810 include Rectification unit 815 and endpoint conversion circuit 541.In the present embodiment, rectification unit 815 is half-wave rectifying circuit, includes rectification Diode 811 and rectifier diode 812, to carry out halfwave rectifier.The anode of rectifier diode 811 couples rectification output end 512, negative terminal couples half-wave tie point 819.The anode of rectifier diode 812 couples half-wave tie point 819, and negative terminal coupling rectification is defeated Outlet 511.Endpoint conversion circuit 541 couples half-wave tie point 819 and pin 501 and pin 502, to by pin 501 and The 502 received signal of institute of pin is transferred to half-wave tie point 819.By the endpoint conversion function of endpoint conversion circuit 541, rectification Circuit 810 can provide two input terminals (coupling pin 501 and pin 502) and two output ends 511 and 512.

Then illustrate that the operation of rectification circuit 810 in certain embodiments is as follows.

When AC signal is in positive half-wave, AC signal sequentially converts electricity through pin 501 (or pin 502), endpoint It is flowed into after road 541, half-wave tie point 819, rectifier diode 812 and rectification output end 511, and by another circuit stream of LED light Out.When AC signal is in negative half-wave, AC signal is simultaneously flowed by another circuit of LED light, then rectified output end 512, rectifier diode 811, half-wave tie point 819, endpoint conversion circuit 541 and pin 501 (or pin 502) flow out afterwards.

It is worth noting that, endpoint conversion circuit 541 may include resistance, capacitor, inductance or combinations thereof, comes while having The functions such as current limliting/pressure limiting, protection, current/voltage adjusting.The explanation of these functions is referred in rear explanation.

In practical application, rectification unit 815 and endpoint conversion circuit 541 can be with reversing of position (as shown in Figure 4 D) without shadow Ring halfwave rectifier function.Fig. 4 D is the schematic diagram according to the rectification circuit of the utility model embodiment.D referring to fig. 4 rectifies two poles The anode of pipe 811 couples pin 502, and the negative terminal of rectifier diode 812 couples pin 501.The negative terminal of rectifier diode 811 and whole The anode for flowing diode 812 couples half-wave tie point 819 simultaneously.Endpoint conversion circuit 541 couples half-wave tie point 819, and Rectification output end 511 and rectification output end 512.When AC signal is in positive half-wave, AC signal and another electricity by LED light Road flow into, then rectified output end 512 (or rectification output end 511), 541 half-wave tie point 819 of endpoint conversion circuit, It is flowed out after rectifier diode 812 and pin 501.When AC signal is in negative half-wave, AC signal is sequentially through pin 502, whole After flowing diode 811, half-wave tie point 819, endpoint conversion circuit 541 and rectification output end 511 (or rectification output end 512) It flows into, and is flowed out by another circuit or the other end of LED light.

It is worth noting that the endpoint conversion circuit 541 in embodiment shown in Fig. 4 C and Fig. 4 D can be omitted, therefore It is indicated with dashed lines.After Fig. 4 C omits endpoint conversion circuit 541, pin 501 and pin 502 are coupled to half-wave tie point 819. After Fig. 4 D omits endpoint conversion circuit 541, rectification output end 511 and rectification output end 512 are coupled to half-wave tie point 819.

Rectification circuit 510 shown in Fig. 4 A to Fig. 4 D is changed to pin 503 in pin 501 and pin 502 and pin 504 is used When conduction, that is, it may make up or as rectification circuit 540 shown in Fig. 3 E.

Then Fig. 3 C, Fig. 3 E are arranged in pairs or groups to illustrate the selection and combination of rectification circuit 510 and rectification circuit 540.

Rectification circuit 610 shown in Fig. 4 A can be used in the rectification circuit 510 of Fig. 3 C illustrated embodiment.

Any in Fig. 4 A to Fig. 4 D then can be used in the rectification circuit 510 and rectification circuit 540 of Fig. 3 E illustrated embodiment Rectification circuit, and rectification circuit shown in Fig. 4 C and Fig. 4 D also can be omitted endpoint conversion circuit 541 without influencing LED straight lamp Rectification function needed for operation.When rectification circuit 510 and rectification circuit 540 select the rectified current of the halfwave rectifier of Fig. 4 B to Fig. 4 D Lu Shi, as AC signal is in positive half-wave or negative half-wave, AC signal from rectification circuit 510 and rectification circuit 540 wherein it One flows into, another outflow.Furthermore if rectification circuit 510 and rectification circuit 540 select the rectified current in Fig. 4 C or Fig. 4 D simultaneously Road, or select the rectification circuit in Fig. 4 C and Fig. 4 D respectively, the then only end of one of rectification circuit 510 and rectification circuit 540 Point conversion circuit 541 can have the function of current limliting/pressure limiting, protection, current/voltage adjusting etc., and another endpoint conversion circuit 541 can To omit.

Fig. 5 A is the schematic diagram according to the endpoint conversion circuit of the utility model embodiment.Referring to Fig. 5 A, endpoint conversion electricity Road 641 includes capacitor 642, and one end of capacitor 642 couples pin 501 and pin 502 simultaneously, and the other end couples half-wave tie point 819.Capacitor 642 has equivalent impedance to AC signal.The frequency of AC signal is lower, and the equivalent impedance of capacitor 642 is got over Greatly；The frequency of AC signal is higher, and the equivalent impedance of capacitor 642 is smaller.Therefore, the endpoint conversion circuit 641 of the present embodiment In capacitor 642 have high-pass filtering effect.Furthermore endpoint conversion circuit 641 is to connect, and have with the LED unit in LED light Have under equivalent impedance, has the function of current limliting/pressure limiting to LED unit, it can be excessively high to avoid the electric current and/or cross-pressure of LED unit And damage LED unit.In addition, electricity can be further enhanced by the capacitance of the frequency selection capacitor 642 of cooperation AC signal Stream/voltage is adjusted.

It is worth noting that, endpoint conversion circuit 641 can additionally include capacitor 645 and/or capacitor 646.Capacitor 645 1 End coupling half-wave tie point 819, the other end couple pin 503.646 one end of capacitor couples half-wave tie point 819, other end coupling Pin 504.For example, electricity of the capacitor 645 and 646 using half-wave tie point 819 as common connection end, as electric current adjustment capacitor Hold 642 coupling common connection ends and pin 501 and pin 502.Under such circuit framework, pin 501 and pin 502 its One of have between pin 503 concatenated capacitor 642 and 645 or pin 501 and pin 502 one of them with pin 504 Between have concatenated capacitor 642 and 646.By the equivalent impedance of concatenated capacitor, AC signal is divided.Please join simultaneously See Fig. 3 E and 5A, according to the ratio of the equivalent impedance of concatenated capacitor, can control the capacitor 642 in rectification circuit 510 Cross-pressure on cross-pressure and filter circuit 520 and LED drive module 530, flows through the electricity of the LED module of LED drive module 530 Ductility limit is formed within a load current value, and protects/avoid too high voltages to damage filter circuit 520 and LED drive module simultaneously 530。

Fig. 5 B is the schematic diagram according to the endpoint conversion circuit of the utility model embodiment.Refer to Fig. 5 B, endpoint conversion Circuit 741 includes capacitor 743 and 744.One end of capacitor 743 couples pin 501, and the other end couples half-wave tie point 819.Capacitor 744 one end couples pin 502, and the other end couples half-wave tie point 819.Compared to endpoint conversion circuit 641 shown in Fig. 5 A, Capacitor 642 is changed to two capacitors 743 and 744 by endpoint conversion circuit 741.The capacitance of capacitor 743 and 744 can be identical, The received signal sizes of pin 501 and the institute of pin 502 can be regarded and as difference.

Similarly, endpoint conversion circuit 741 can include additionally capacitor 745 and/or capacitor 746, be respectively coupled to pin 503 and pin 504.In this way, any in pin 501 and pin 502 have concatenated electricity with any in pin 503 and pin 504 Hold and reach the function of partial pressure effect and protection.

Fig. 5 C is the schematic diagram according to the endpoint conversion circuit of the utility model embodiment.Referring to Fig. 5 C, endpoint conversion electricity Road 841 includes capacitor 842,843 and 844.Capacitor 842 and 843 is series between pin 501 and half-wave tie point 819.Capacitor 842 and 844 are series between pin 502 and half-wave tie point 819.Under such circuit framework, capacitor 842,843 and 844 Between any short circuit, between pin 501 and half-wave tie point 819 and between pin 502 and half-wave tie point 819 there are still The effect of (in other two capacitors) at least one capacitor and still current limiting.Therefore, LED light accidentally is touched for user and occurs It, can be to avoid excessive current flows through human body and causes user to get an electric shock and injures when electric shock.

Similarly, endpoint conversion circuit 841 can include additionally capacitor 845 and/or capacitor 846, be respectively coupled to pin 503 and pin 504.In this way, any in pin 501 and pin 502 have concatenated electricity with any in pin 503 and pin 504 Hold and reach the function of partial pressure effect and protection.

Fig. 5 D is the schematic diagram according to the endpoint conversion circuit of the utility model embodiment.Referring to Fig. 5 D, endpoint conversion electricity Road 941 includes fuse 947,948.947 one end of fuse couples pin 501, and the other end couples half-wave tie point 819.Insurance 948 one end of silk couple pin 502, and the other end couples half-wave tie point 819.Whereby, when pin 501 and pin 502 is any flows through Electric current be higher than fuse 947 and 948 rated current when, fuse 947 and 948 will accordingly fuse and open a way, whereby Reach the function of overcurrent protection.

When pin 501 and pin 502 and 504 location swap of pin 503 and pin, it is coupled to pin 501 and pin 502 Rectification circuit 510 and rectification circuit 810 in and each embodiment of above-mentioned endpoint conversion circuit can convert to Fig. 3 E Shown in rectification circuit 540.

The capacitance of capacitor in above-mentioned endpoint conversion circuit embodiment is preferably fallen between about 100pF~100nF. In addition, capacitor can two or more capacitors in parallel or series carry out equivalent substitution.Such as: capacitor 642,842 can use two A capacitor series connection is to replace.The capacitance of one of 2 capacitors can be chosen from the range of about 1.0nF~about 2.5nF, preferably Choose 1.5nF；Another is selected from about 1.5nF~about 3.0nF range, preferably chooses about 2.2nF.

Fig. 6 A is the block diagram according to the filter circuit of the utility model embodiment.Referring to Fig. 6 A, rectified current is drawn in figure Road 510 is only to indicate connection relationship, and not filter circuit 520 includes rectification circuit 510.Referring to Fig. 6 A, filter circuit 520 is wrapped Containing filter unit 523, rectification output end 511 and rectification output end 512 are coupled, to interrogate after receiving the rectification that rectification circuit is exported Number, and filter out after the ripple after rectification in signal signal after output filtering.Therefore, signal after the waveform of signal relatively rectifies after filtering Waveform it is smoother.Filter circuit 520 can also include also filter unit 524, be coupled between rectification circuit and corresponding pin, Such as: rectification circuit 510 and pin 501, rectification circuit 510 and pin 502, rectification circuit 540 and pin 503 and rectification circuit 540 with pin 504, to be filtered to specific frequency, to filter out the specific frequency of external drive signal.Shown in Fig. 6 A In embodiment, filter unit 524 is coupled between pin 501 and rectification circuit 510.Filter circuit 520 can also be also comprising filtering Unit 525, be coupled to pin 501 and pin 502 one of them between the diode of rectification circuit 510 or pin 503 with connect One of foot 504 is between the diode of rectification circuit 540, to reduce or filter out electromagnetic interference (EMI).In this implementation Example, filter unit 525 are coupled between pin 501 and the diode (Fig. 6 A is not drawn) of rectification circuit 510.Due to filter unit 524 and 525 visual practical situations add or omit, therefore are represented by dotted lines it in Fig. 6 A.

Fig. 6 B is the schematic diagram according to the filter unit of some embodiments of the utility model.Refer to Fig. 6 B, filter unit 623 include a capacitor 625.One end coupling rectification output end 511 and filtering output end 521 of capacitor 625, other end coupling rectification Output end 512 and filtering output end 522, to signal after the rectification exported by rectification output end 511 and rectification output end 512 Low-pass filtering is carried out, signal after filtering is formed to filter out the radio-frequency component after rectification in signal, then by filtering output end 521 And 522 output.

Fig. 6 C is the schematic diagram according to the filter unit of the utility model embodiment.Referring to Fig. 6 C, filter unit 723 is π Type filter circuit includes capacitor 725, inductance 726 and capacitor 727.It is well known that π type filter circuit is in shape or structure It is similar with symbol π.One end coupling rectification output end 511 of capacitor 725 simultaneously couples filtering output end 521 by inductance 726 simultaneously, The other end couples rectification output end 512 and filtering output end 522.Inductance 726 is coupled to rectification output end 511 and filtering output Between end 521.One end of capacitor 727 couples rectification output end 511 by inductance 726 and couples filtering output end 521 simultaneously, separately One end couples rectification output end 512 and filtering output end 522.

As shown in Figure 6 C, in rectification output end 511 and rectification output end 512 and filtering output end 521 and filtering output Between end 522, filter unit 723 is compared with filter unit more than 623 shown in Fig. 6 B inductance 726 and capacitor 727.And inductance 726 With capacitor 727 also with as capacitor 725, there is low-pass filtering effect.Therefore the filter unit 723 of the present embodiment is compared to Fig. 6 B institute There is the filter unit 623 shown more preferably high frequency to filter out ability, and the waveform of signal is more smooth after the filtering exported.

The inductance value of inductance 726 in above-described embodiment is preferably selected from about 10nH~about 10mH range.Capacitor 625, 725,727 capacitance is preferably selected from about 100pF~about 1uF range.

Fig. 6 D is the schematic diagram according to the filter unit of the utility model embodiment.Referring to Fig. 6 D, filter unit 824 includes Capacitor 825 and inductance 828 in parallel.One end of capacitor 825 couples pin 501, and the other end couples rectification output end 511, with right High-pass filtering is carried out by the external drive signal that pin 501 inputs, to filter out the low-frequency component in external drive signal.Inductance 828 one end couples pin 501, and the other end couples rectification output end 511, to the external drive signal inputted by pin 501 Low-pass filtering is carried out, to filter out the radio-frequency component in external drive signal.Therefore, the combination of capacitor 825 and inductance 828 can be external Portion drives specific frequency in signal that high impedance is presented.It is, capacitor and inductance in parallel are to external drive signal in specific frequency Peak value equivalent impedance is presented in rate.

Via the capacitance of capacitor 825 and the inductance value of inductance 828 is suitably chosen, the centre frequency of high impedance frequency range can be made F is located in specific frequency, and centre frequency isWherein L is the inductance value of inductance 828, and C is the capacitance of capacitor 825. Such as: preferable centre frequency is within the scope of about 20-30kHz, more preferably about 25kHz.Moreover, for specific centre frequency, LED light with filter unit 824 may conform to the safety requirement of UL certification.

It is worth noting that, filter unit 824 may include resistance 829.Resistance 829 is coupled to pin 501 and rectification output Between end 511.In figure 6d, resistance 829 is connected with capacitor 825 in parallel, inductance 828.For example, resistance 829 is coupled to Between pin 501 and the capacitor 825 and inductance 828 of parallel connection or resistance 829 is coupled to the electricity of rectification output end 511 and parallel connection Hold between 825 and inductance 828.In the present embodiment, resistance 829 be coupled to pin 501 and parallel connection capacitor 825 and inductance 828 it Between.Quality factor (Q value) of the resistance 829 to adjust the lc circuit that capacitor 825 and inductance 828 are constituted, to be more suitable for not The application environment required with Q value.Since resistance 829 is inessential component, therefore it is represented by dotted lines in the embodiment shown in Fig. 6 D.

The capacitance of capacitor 825 is preferably in the range of about 10nF~2uF.The inductance value of inductance 828 is preferably less than 2mH, More preferably it is less than 1mH.The resistance value of resistance 829 is preferably greater than 50 ohm, is more preferably greater than 500 ohm.

Other than the filter circuit shown in the above embodiments, traditional low pass or bandpass filter can be used as this reality It is used in filter circuit with novel filter unit.

Fig. 6 E is the schematic diagram according to the filter unit of the utility model embodiment.Referring to Fig. 6 E, in the present embodiment, filter Wave unit 925 is set within rectification circuit 610 shown in Fig. 4 A, to reduce caused by rectification circuit 610 and/or other circuits Electromagnetic interference (EMI).In the present embodiment, filter unit 925 includes to inhibit EMI capacitor, is coupled to two poles of pin 501 and rectification It is simultaneously also coupled between pin 502 and the anode of rectifier diode 613 simultaneously between the anode of pipe 614, to reduce pin 501 And the received alternating-current driving signal of pin 502 positive half-wave transmitting when adjoint electromagnetic interference.The inhibition EMI of filter unit 925 Capacitor is also coupled to be also coupled to the negative terminal of rectifier diode 611 between the negative terminal and pin 501 of rectifier diode 612 and simultaneously Between pin 502, to reduce electricity adjoint when the negative half-wave of pin 501 and the received alternating-current driving signal of pin 502 transmits Magnetic disturbance.In some embodiments, rectification circuit 610 be full-wave bridge rectifier circuit and include rectifier diode 611,612, 613 and 614.The full-wave bridge rectifier circuit have first filtering tie point and second filtering tie point, rectifier diode 611, 612, two rectifier diode-rectifier diodes 611 and rectifier diode 613 in 613 and 614, wherein rectifier diode 613 Anode and rectifier diode 611 negative terminal connect to be formed one first filtering tie point, rectifier diode 611,612,613 and Another two rectifier diode-rectifier diode 612 and 614 in 614, the wherein anode and rectifier diode of rectifier diode 614 612 negative terminal connects to form one second filtering tie point.The inhibition EMI capacitor of filter unit 925 is coupled to the first filtering connection Between point and the second filtering tie point.

It is similar in addition, refer to Fig. 4 C and Fig. 5 A, Fig. 5 B and Fig. 5 C, the electricity of one of Fig. 5 A, Fig. 5 B and Fig. 5 C Any capacitor in road is coupled to and any diode and pin 501 and (or the pin of pin 502 in the circuit of Fig. 4 C 503 and pin 504) between, therefore any or whole capacitor in Fig. 5 A, Fig. 5 B and Fig. 5 C can be used as the inhibition of filter unit EMI capacitor uses, and reaches the function of reducing the electromagnetic interference of circuit.For example, the rectification circuit 510 in Fig. 3 C and Fig. 3 E can To be half-wave rectifying circuit and include two rectifier diodes, the anode of one of two rectifier diodes connects another bear End forms half-wave tie point, and any or whole capacitor in Fig. 5 A, Fig. 5 B and Fig. 5 C is coupled to the half-wave of two rectifier diodes Tie point and first pin and second pin at least one.Moreover, the rectification circuit 540 in Fig. 3 E can be Half-wave rectifying circuit and include two rectifier diodes, the anode of one of two rectifier diodes connects another negative terminal shape At half-wave tie point, any or whole capacitor in Fig. 5 A, Fig. 5 B and Fig. 5 C is coupled to the half-wave connection of two rectifier diodes Point and the third pin and the 4th pin at least one.

It is worth noting that, the inhibition EMI capacitor in Fig. 6 E illustrated embodiment can be used as the capacitor of filter unit 824 and It arranges in pairs or groups with the inductance 828 of filter unit 824, and high impedance and reduction is presented in the external drive signal reached simultaneously to specific frequency The function of electromagnetic interference.For example, the capacitor 825 of filter unit 824 is coupled to when rectification circuit is full-wave bridge rectifier circuit Between first filtering tie point of full-wave bridge rectifier circuit and the second filtering tie point.When rectification circuit is half-wave rectifying circuit When, the capacitor 825 of filter unit 824 is coupled to the half-wave tie point and first pin and described second of half-wave rectifying circuit Pin at least one.

Fig. 7 A is the schematic diagram according to the LED module of the utility model embodiment.Referring to Fig. 7 A, LED module 630 is just End coupling filtering output end 521, negative terminal couple filtering output end 522.LED module 630 includes at least one LED unit 632. LED unit 632 is connected in parallel to each other when being more than two.The anode of the anode coupling LED module 630 of each LED unit 623, with Couple filtering output end 521；The negative terminal of the negative terminal coupling LED module 630 of each LED unit, to couple filtering output end 522.LED unit 632 includes at least one LED 631.When LED 631 is a plurality of, LED 631 is connected in series, and first The anode of LED 631 couples the anode of the LED unit 632, and the negative terminal coupling of first LED 631 is next or second LED 631.And the anode of the last one LED 631 couples the negative terminal of previous LED 631, the negative terminal of the last one LED 631 Couple the negative terminal of the LED unit 632.

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

Fig. 7 B is the schematic diagram according to the LED module of the utility model embodiment.Referring to Fig. 7 B, LED module 630 is just End coupling filtering output end 521, negative terminal couple filtering output end 522.LED module 630 includes at least two LED units 732, And the anode and negative terminal of the anode coupling LED module 630 of each LED unit 732 couple the negative terminal of LED module 630. Each LED unit 732 includes at least two LED 731, the connection type of the LED 731 in the LED unit 732 as As Fig. 7 A is described.For example, the anode of the cathode of LED 731 and next LED 731 couple, and first LED 731 is just The cathode of anode and the last one LED 731 that pole couples the LED unit 732 couples the negative of the LED unit 732 Pole.Furthermore it is also connected to each other between the LED unit 732 in the present embodiment.N-th of LED 731 of each LED unit 732 Anode be connected to each other, cathode is also connected to each other.Therefore, connected between the LED of the LED module 630 of the present embodiment with web form It connects.

Compared to the embodiment of Fig. 8 A to Fig. 8 G, the LED drive module 530 of above-described embodiment include LED module 630 but It does not include the driving circuit of LED module 630.

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

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

Fig. 7 C is the plan view according to the circuit layout of the LED module of some embodiments of the utility model.Referring to Fig. 7 C, originally The connection relationship of the LED 831 of embodiment is said by taking three LED units in LED module 630 as an example with shown in Fig. 7 B at this It is bright.Positive wire 834 and cathode conductor 835 receive driving signal, and to provide electrical power to each LED 831, for example: anode is led Line 834 couples the filtering output end 521 of aforementioned filter circuit 520, and cathode conductor 835 couples the filtering of aforementioned filter circuit 520 Output end 522, with signal after accepting filter.For convenience of description, by n-th of LED respective in all three LED units in Fig. 7 C 831 are divided into same LED group 833.

Positive wire 834 connects first LED 831 in the LED unit of the leftmost side three, the i.e. leftmost side as seen in figure 7 c (left side) anode of three first LED 831 in LED group 833, and cathode conductor 835 connects three in three LED units The last one a LED 831, i.e. (right side) of three the last one LED 831 in rightmost side LED group 833 as seen in figure 7 c Cathode.The cathode of three first LED 831 of three LED units, the anode of three the last one LED 831 and other The anode and cathode of LED 831 then passes through connecting wire or component 839 connects.

In other words, the anode of three LED 831 of leftmost side LED group 833 is connected to each other by positive wire 834, Cathode is connected to each other by leftmost side connecting wire 839.The anode of three LED 831 of the second from left LED group 833 passes through the leftmost side Connecting wire 839 is connected to each other, and cathode is connected to each other by the connecting wire 839 of the second from left.Due to leftmost side LED group 833 The anode of three LED 831 of the cathode and the second from left LED group 833 of three LED 831 by leftmost side connecting wire 839 each other Connection, thus the cathode of first LED 831 of each LED unit of three LED units and second LED 831 it is positive that This connection.The rest may be inferred to form as shown in Figure 7 B netted.

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

In some embodiments, positive wire 834 also may include having positive wire 834a, and cathode conductor 835 also may include There is negative wire 835a, so that the both ends of LED module is all had positive "+" and cathode "-" tie point, as seen in figure 7 c.It is such Cabling framework can make other circuits of the power supply mould group of LED light, such as: filter circuit 520, rectification circuit 510 and rectification circuit 540 by LED light either end or simultaneously the anode at both ends and/or cathode tie point are couple to LED module, to increase LED light The elasticity that the configuration of middle actual circuit arranges.

Fig. 7 D is the plan view according to the circuit layout of the LED module of another embodiment of the utility model.Referring to Fig. 7 D, originally The connection relationship of the LED 931 of embodiment includes 7 LED herein with shown in Fig. 7 A with three LED units and each LED unit It is illustrated for 931.Positive wire 934 and cathode conductor 935 receive driving signal, to provide electrical power to each LED 931, lift For example: positive wire 934 couples the filtering output end 521 of aforementioned filter circuit 520, and cathode conductor 935 couples aforementioned filtering The filtering output end 522 of circuit 520, with signal after accepting filter.It for convenience of description, will be each in three LED units in Fig. 7 D Seven a LED 931 are divided into same LED group 932.Therefore there are three LED groups 932 corresponding with three LED units.

Positive wire 934 connect three LED groups 932 in each first (leftmost side) LED 931 (left side) it is positive. Cathode conductor 935 connects (right side) cathode of three LED groups 932 the last one (rightmost side) LED 931 in each.Each In LED group 932, the cathode of the LED 931 of left connects right LED by connecting wire 939 in neighbouring two LED 931 931 anode.Whereby, the LED 931 of each LED group 932 is connected in series.

It is worth noting that, connecting wire 939 is to connect the cathode of one of two adjacent LEDs 931 and another Anode.The cathode of the LED 931 of the last one (rightmost side) of the cathode conductor 935 to connect each LED group 932.Anode is led The anode of the LED 931 of first (leftmost side) of the line 934 to connect each LED group 932.Therefore, as illustrated in fig. 7d, connect The width (area) of conducting wire 939 is greater than the part that cathode conductor 935 is connect with cathode, the portion that cathode conductor 935 is connect with cathode The width (area) divided is greater than the part that positive wire 934 and anode are connect.For example, the width 938 of connecting wire 939 can be big Width 937 in the part that cathode conductor 935 is connect with the cathode of LED 931, width 937 are greater than positive wire 934 and LED The width 936 of the part of 931 anode connection.Therefore, such cabling framework facilitates dissipating for the LED 931 of LED module 630 Heat.

In addition, positive wire 934 also may include having positive wire 934a, cathode conductor 935 also may include having negative wire 935a makes the both ends of LED module all have positive "+" and cathode "-" tie point, as illustrated in fig. 7d.Such cabling framework can Make other circuits of the power supply mould group of LED light, such as: filter circuit 520, rectification circuit 510 and rectification circuit 540 are by LED lamp Either end or the positive tie point 934a and/or cathode tie point 935a at both ends are couple to LED module simultaneously.Therefore, the cloth Office's structure increases the elasticity that the configuration of actual circuit in LED light arranges.

Furthermore cabling shown in Fig. 7 C and 7D can be realized using flexible circuit board or substrate, depending on being used Be specifically defined, be even referred to alternatively as flexible circuit board.For example, flexible circuit board has single conductive layer, with erosion Quarter, mode formed positive wire 834, positive wire 834a, cathode conductor 835, negative wire 835a and connecting wire in Fig. 7 C Positive wire 934, positive wire 934a, cathode conductor 935, negative wire 935a and connecting wire in 839 and Fig. 7 D 939。

Fig. 7 E is the plan view according to the circuit layout of the LED module of some embodiments of the utility model.Fig. 7 E and Fig. 7 C In LED module layout structure each correspond to the identical mode of connection LED 831 as shown in Fig. 7 B, but in Fig. 7 E Layout structure includes bilayer conductive layer, rather than only one conductive layer is used to form circuit layout shown in Fig. 7 C.Referring to Fig. 7 E, Main difference is that, positive wire 834 and cathode conductor 835 are respectively provided with positive wire 834a with the layout in Fig. 7 C It is formed in the second conductive layer with negative wire 835a, positive wire 834a and negative wire 835a.The Discrepancy Description is such as Under.

Referring to Fig. 7 E, the flexible circuit board of LED module has bilayer conductive layer, including one first conductive layer 2a, dielectric Layer 2b and the second conductive layer 2c.Electrical isolation is carried out with dielectric layer 2b between first conductive layer 2a and the second conductive layer 2c.Flexible Positive wire 834, cathode conductor 835 and the connection in Fig. 7 E are formed in first conductive layer 2a of formula circuit board with etching mode Conducting wire 839, for being for example electrically connected the multiple LED component 831 with web form, and with erosion in the second conductive layer 2c Quarter, mode formed positive wire 834a, negative wire 835a, for being electrically connected the filter circuit (filtering output end).And And the positive wire 834 of the first conductive layer 2a of flexible circuit board, cathode conductor 835 have layer tie point 834b and 835b, for being connected to the second conductive layer 2c.Positive wire 834a, the negative wire 835a of second conductive layer 2c connects with layer Contact 834c and 835c.Layer tie point 834b is opposite with the layer position tie point 834c, draws for connecting positive wire 834 and anode Line 834a.Layer tie point 835b is opposite with the layer position tie point 835c, with connection cathode conductor 835 and negative wire 835a.Even The preferable way for connecing two conductive layers is to form hole, which connects each layer of tie point 834b and corresponding layer tie point 834c It connects, and forms hole, which connects each layer of tie point 835b with corresponding layer tie point 835c, this some holes extends through Two conductive layers and between dielectric layer.Furthermore, it is possible to make positive wire 834 by the welding metal component for passing through connecting hole And positive wire 834a is typically electrically connected, and can make cathode conductor 835 by passing through the welding metal component of connecting hole And negative wire 835a is typically electrically connected.

Similarly, positive wire 934a and negative wire 935a can also be changed to by the cabling of LED module shown in Fig. 7 D Second conductive layer, and form double-deck Wiring structure.

It is worth noting that, the thickness of the second conductive layer of the double-deck flexible circuit board is preferably compared to the first conductive layer Thickness it is thick, the line loss (pressure drop) on the positive wire and negative wire being arranged in the second conductive layer can be reduced whereby. Furthermore the double-deck flexible circuit board is compared to single layer flexible circuit board, due to moving to the positive wire at both ends, negative wire The second conductive layer in the double-deck flexible circuit board can reduce the width of the double-deck flexible circuit board (between two longitudinal direction sides Width).In process of production on identical fixture or plate, most discharge quantity of relatively narrow flexible circuit board are more than wider Flexible circuit board most discharge quantity.Therefore, the production of LED module can be improved using relatively narrow flexible circuit board Efficiency.And with bilayer conductive layer flexible circuit board relatively on be relatively easy to maintain shape, with increase production it is reliable Property, such as: the accuracy of welding position when the welding of LED component.

As the deformation of above scheme, the utility model also provides a kind of LED straight lamp, the power supply mould of the LED straight lamp At least partly electronic component of group is arranged in LED lamp panel.For example, utilizing PEC (printed electronic circuit, PEC:Printed Electronic Circuits) technology will at least partly electronic component printing, be inserted into or be embedded on lamp plate.

In one embodiment of the utility model, the electronic component of power supply mould group is provided entirely in LED lamp panel.Its Manufacturing process is as follows: substrate preparation (bendable printed circuit board preparation) → spray printing metal nano ink → spray printing passive components/ Active device (power supply mould group) → drying/sintering → spray printing interlayer connection convex block → spray insulation ink → spray printing metal nano oil Ink → spray printing passive components and active device (and so on form included multi-layer board) → sprayed surface welded disc → spraying Solder resist welds LED component.

It in certain embodiments, only need to be in lamp plate if the electronic component of power supply mould group is provided entirely in LED lamp panel Both ends by welding lead connect LED straight lamp pin, realize LED straight lamp pin and lamp plate electrical connection.This Sample does not just have to that substrate is arranged for power supply mould group again, and then can further optimize the design or arrangement of the lamp cap of LED straight lamp.? In some embodiments, the both ends of lamp plate are arranged in power supply mould group, reduce shadow of the heat to LED component of its work generation to the greatest extent in this way It rings.In the present embodiment, due to there is no substrate to be used to support power supply mould group in addition to lamp plate, so it is total to substantially reduce welding Amount improves the global reliability of power supply mould group.

Another situation is that the part electronic component (such as resistance and/or small size capacitor) of power supply mould group is printed on LED When on lamp plate, and such as by big device: inductance and/or electrolytic capacitor electronic component are arranged in lamp cap.The production of LED lamp panel Process is same as above.And in this case, by being arranged part electronic component on lamp plate, in reasonable layout L ED straight lamp Power supply mould group, the design of Lai Youhua lamp cap.

It deforms, can also be realized the electronic component of power supply mould group by way of being embedded in or being inserted into as above-mentioned scheme It is arranged on lamp plate.That is: electronic component is embedded on bendable or flexible lamp plate in a manner of insertion.In some embodiments, It can be used and realized containing resistor-type/capacitive the methods of copper coated foil plate (CCL) or the relevant ink of silk-screen printing；Or use ink-jet The method that printing technique realizes insertion passive components, i.e., using ink-jet printer directly the electrically conductive ink and phase as passive components It closes on the position set in function ink jet-printing to lamp plate.Then, by UV light processing or drying/sintering processes, potting is formed The lamp plate of passive components.Being embedded in electronic component on lamp plate includes such as resistance, capacitor and inductance；In other embodiments, Live components are also suitable.By the way that the rational deployment of power supply mould group on some Component Embeddings to lamp plate, will be can be realized and then reached The design for optimizing lamp cap, since the surface area of the component of the printed circuit board for carrying power supply mould group is reduced or is reduced, As a result it is also reduced or reduces for carrying size, weight and the thickness of the printed circuit board of the component of power supply mould group.And In this case, since (pad is to be easiest to introduce on printed circuit board or lead for the pad that eliminates these resistance and capacitor Cause the part of failure, failure or defect), the reliability of power supply mould group is also improved.It will shorten on printed circuit board simultaneously The length of conducting wire for connecting elements and allow on a printed circuit more compact component be laid out, thus improve these structures The performance of part.

In one embodiment of the utility model, conducting wire is directly printed in LED tube light with linear layout Wall, LED component directly paste the inner wall, with electrically connected to each other by these conducting wires.In some embodiments, using chip form LED component be placed directly against on the conducting wire of the inner wall, conducting wire both ends be arranged tie point, pass through tie point LED component and electricity The connection of source mould group.After attaching, coating or drop fluorescent powder, make LED straight lamp generate white light when working, can also be on the chip The light of other colors.

In some embodiments, the luminous efficiency of LED or LED component is 80lm/W or more, in some embodiments, is shone Efficiency is it may be preferred that 120lm/W or more.Certain more preferably embodiments may include the LED or LED of luminous efficiency 160lm/W or more Component.The white light for generating LED component and issuing can be mixed through fluorescent powder by the monochromatic light for issuing monochromatic LED chip.White light Spectrum a length of 430-460nm of primary waves and 550-560nm or 430-460nm, 540-560nm and 620- 640nm。

Fig. 8 A is the block diagram according to the power supply mould group of the LED light of the utility model embodiment.Referring to Fig. 8 A, the present embodiment LED light power supply mould group include rectification circuit 510 and rectification circuit 540, filter circuit 520, LED drive module 530, and this LED drive module 530 in embodiment also includes driving circuit 1530 and LED module 630.According to Fig. 3 E, in Fig. 8 A Driving circuit 1530 is DC-to-DC switching circuit, couples filtering output end 521 and 522, with signal after accepting filter, and It carries out electrical power conversion and is converted into driving signal with signal after filter passing through the output of drive output 1521 and 1522.LED module 630 coupling drive outputs 1521 and 1522, are shone with receiving driving signal.In some embodiments, LED module 630 Electric current is stable at a setting electric current value.The description of LED module 630 is identical as the explanation provided referring to Fig. 7 A to Fig. 7 D.

It is worth noting that, rectification circuit 540 can omit for inessential component, therefore it is represented by dotted lines in figure.Also It is to say, the LED drive module 530 in the embodiment of Fig. 8 A, Fig. 8 C and Fig. 8 E may include driving circuit 1530 and LED module 630. Therefore, the power supply mould group of the LED light of the present embodiment, which can be also applied to, is connected to the single ended power supply of one end of LED light, can be applied to It is couple to the Double-End Source at the both ends of LED light.In the case where single ended power supply, LED light is, for example: LEDbulb lamp, PAL lamp etc..

Fig. 8 B is the block diagram according to the driving circuit of the utility model embodiment.Referring to Fig. 8 B, driving circuit includes control Device 1531 and conversion circuit 1532 processed carry out electrical power conversion with the mode of current source, to drive LED module to shine.Conversion circuit 1532 include switching circuit 1535 and accumulator 1538.Conversion circuit 1532 couples filtering output end 521 and 522, receives Signal after filtering, and according to the control of controller 1531, signal after filtering is converted into driving signal and passes through drive output 1521 and 1522 outputs, to drive LED module.Under the control of controller 1531, the driving that conversion circuit 1532 is exported is interrogated Number be stabling current, and make LED module stability shine.

Fig. 8 C is the schematic diagram according to the driving circuit of the utility model embodiment.Referring to Fig. 8 C, in the present embodiment, driving Circuit 1630 is decompression DC to-DC switching circuit, includes controller 1631 and conversion circuit, and conversion circuit includes inductance 1632, freewheeling diode 1633, capacitor 1634 and switching switch 1635.Driving circuit 1630 couple filtering output end 521 and 522, signal after received filtering is converted into driving signal, is coupled between drive output 1521 and 1522 with driving LED module.

In the present embodiment, switching switch 1635 is metal-oxide half field effect transistor (MOSFET), has control terminal, first end And second end.Switch the anode of the first end coupling freewheeling diode 1633 of switch 1635, second end couples filtering output end 522, control terminal couples controller 1631 so as to switch on or off between the first end and second end of switch 1635.Driving Output end 1521 couples filtering output end 521, and drive output 1522 couples one end of inductance 1632, and inductance 1632 is another The first end of one end coupling switching switch 1635.Capacitor 1634 is coupled between drive output 1521 and 1522, with stabilization Voltage difference between drive output 1521 and 1522.The negative terminal of freewheeling diode 1633 couples drive output 1521.

The running of driving circuit 1630 will be illustrated next.

Controller 1631 determines switching switch 1635 according to current sense signal S535 and/or current sense signal S531 Conducting and deadline.For example, in some embodiments, controller 1631 be configured to control switching switch 1635 conducting with Switch the duty ratio (Duty Cycle) that switch 1635 ends, to adjust the size or amplitude of driving signal.Current sense signal S535 represents the size of current for flowing through switching switch 1635.Current sense signal S531 representative, which flows through, is coupled to drive output The size of current of LED module between 1521 and 1522.According to any of current sense signal S531 and S535, controller 1631 The information for the electric power size that available conversion circuit is converted.When switching the conducting of switch 1635, the electric current of signal after filtering It is flowed by filtering output end 521, and is switched by capacitor 1634 and drive output 1521 to LED module, inductance 1632, switching It is flowed out after 1635 by filtering output end 522.At this point, capacitor 1634 and inductance 1632 carry out energy storage.On the other hand, when switching is opened When closing 1635 cut-off, inductance 1632 and capacitor 1634 discharge stored energy, and electric current is through 1633 afterflow of freewheeling diode to drive Dynamic output end 1521 makes LED module still continuous illumination.

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

Fig. 8 D is the schematic diagram according to the driving circuit of the utility model embodiment.Referring to Fig. 8 D, in the present embodiment, driving Circuit 1730 is voltage boosting dc to-DC switching circuit, includes controller 1731 and conversion circuit, and conversion circuit includes inductance 1732, freewheeling diode 1733, capacitor 1734 and switching switch 1735.Driving circuit 1730 will from filtering output end 521 and Signal is converted into driving signal after the received filtering of 522 institutes, is coupled between drive output 1521 and 1522 with driving LED module.

One end of inductance 1732 couples filtering output end 521, and the other end couples anode and the switching of freewheeling diode 1733 The first end of switch 1735.Switch the second end coupling filtering output end 522 and drive output 1522 of switch 1735.Afterflow two The cathode of pole pipe 1733 couples drive output 1521.Capacitor 1734 is coupled between drive output 1521 and 1522.

The control terminal of the coupling switching switch 1735 of controller 1731, according to current sense signal S531 and/or current sense Signal S535 switches the conducting and cut-off of switch 1735 to control.When switching the conducting of switch 1735, the electric current of signal after filtering It is flowed by filtering output end 521, and is flowed out after flowing through inductance 1732, switching switch 1735 by filtering output end 522.At this point, stream Increase with time, inductance 1732 is in energy storage state to electric current through inductance 1732.Meanwhile capacitor 1734 is in de-energized state, It is shone with lasting driving LED module.On the other hand, when switching the cut-off of switch 1735, inductance 1732 is in de-energized state, electricity The electric current of sense 1732 is reduced at any time.In this case, the electric current of inductance 1732 flows to capacitor through 1733 afterflow of freewheeling diode 1734 and LED module.At this point, capacitor 1734 is in energy storage state.

It is worth noting that, capacitor 1734 is optional component, so it can be omitted and therefore in Fig. 8 D with dotted line It indicates.The case where capacitor 1734 omits, when switching switch 1735 is connected, the electric current of inductance 1732 is not passed through LED module and makes LED module does not shine；When switching the cut-off of switch 1735, the electric current of inductance 1732 flow through LED module through freewheeling diode 1733 and LED module is set to shine.By controlling the fluorescent lifetime of LED module and flowing through the size of current of LED module, LED mould can achieve The average brightness of block is stable in setting value, and has the function that identical stabilized illumination.

Fig. 8 E is the schematic diagram according to the driving circuit of the utility model embodiment.Referring to Fig. 8 E, in the present embodiment, driving Circuit 1830 is decompression DC to-DC switching circuit, includes controller 1831 and conversion circuit, and conversion circuit includes inductance 1832, freewheeling diode 1833, capacitor 1834 and switching switch 1835.Driving circuit 1830 couple filtering output end 521 and 522, signal after received filtering is converted into driving signal, is coupled between drive output 1521 and 1522 with driving LED module.

The first end for switching switch 1835 couples filtering output end 521, and second end couples the cathode of freewheeling diode 1833, And control terminal coupling controller 1831 makes the first end and for switching switch 1835 to receive the control signal of controller 1831 State between two ends is on or off.The anode coupling filtering output end 522 of freewheeling diode 1833, and drive filtering Output end 522.One end of inductance 1832 and the second end of switching switch 1835 couple, and the other end couples drive output 1521. Capacitor 1834 is coupled between drive output 1521 and 1522, with the voltage between stabilized driving output end 1521 and 1522.

Controller 1831 controls switching switch 1835 according to current sense signal S531 and/or current sense signal S535 Conducting and cut-off.When switch switch 1835 be connected when, electric current is flowed by filtering output end 521, and flow through switch switch 1835, It is flowed out after inductance 1832, drive output 1521 and 1522 by filtering output end 522.At this point, flow through the electric current of inductance 1832 with And the voltage of capacitor 1834 is increase with time, inductance 1832 and capacitor 1834 are in energy storage state.On the other hand, when switching switchs When 1835 cut-off, inductance 1832 is in de-energized state, and the electric current of inductance 1832 is reduced at any time.At this point, the electric current of inductance 1832 Inductance 1832 is returned through drive output 1521 and 1522, freewheeling diode 1833 and forms afterflow.

It is worth noting that, capacitor 1834 is optional component, so it can be omitted and in Fig. 8 E with dotted line table Show.When capacitor 1834 omits, no matter switching switch 1835 is on or off, the electric current of inductance 1832 can flow through driving Output end 1521 and 1522 is to drive LED module continuous illumination.

Fig. 8 F is the schematic diagram according to the driving circuit of the utility model embodiment.Referring to Fig. 8 F, in the present embodiment, driving Circuit 1930 is decompression DC to-DC switching circuit, includes controller 1931 and conversion circuit, and conversion circuit includes inductance 1932, freewheeling diode 1933, capacitor 1934 and switching switch 1935.Driving circuit 1930 couple filtering output end 521 and 522, signal after received filtering is converted into driving signal, is coupled between drive output 1521 and 1522 with driving LED module.

One end coupling filtering output end 521 and drive output 1522 of inductance 1932, other end coupling switching switch 1935 first end.Switch switch 1935 second end couple filtering output end 522, and control terminal couple controller 1931 with from Controller 1931 receives the on or off that control signal is used to control switching switch 1935.The positive coupling of freewheeling diode 1933 It connects inductance 1932 and switches the tie point of switch 1935, cathode couples drive output 1521.The coupling driving output of capacitor 1934 End 1521 and 1522, to stablize the driving for the LED module being coupled between drive output 1521 and 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 the conducting of switch 1935, electric current is flowed by filtering output end 521, and flows through inductance 1932, switching It is flowed out after switch 1935 by filtering output end 522.At this point, flowing through the electric current of inductance 1932 increase with time, inductance 1932 is in Energy storage state；But the voltage of capacitor 1934 is reduced at any time, so capacitor 1934 is in de-energized state, to maintain LED module to send out Light.On the other hand, when switching the cut-off of switch 1935, inductance 1932 is in de-energized state, and the electric current of inductance 1932 subtracts at any time It is few.At this point, the electric current of inductance 1932 through freewheeling diode 1933, drive output 1521 and 1522 return inductance 1932 and Form afterflow.At this point, capacitor 1934 is in energy storage state, the voltage of capacitor 1934 is increase with time.

It is worth noting that, capacitor 1934 is optional component, so it can be omitted and therefore in Fig. 8 F with void Line indicates.When capacitor 1934 omits, when switching switch 1935 is connected, the electric current of inductance 1932 is not flow through drive output 1521 and 1522 and so that LED module is not shone.On the other hand, when switching switch 1935 ends, the electric current of inductance 1932 is through afterflow Diode 1933 and flow through LED module and make LED module shine.By the fluorescent lifetime for controlling LED module and flow through LED module Size of current, the average brightness that can achieve LED module is stable in setting value, and reaches the work of identical stabilized illumination With.

Fig. 8 G is the block diagram according to the driving circuit of the utility model embodiment.Referring to Fig. 8 G, driving circuit includes control Device 2631 and conversion circuit 2632 processed, to carry out electrical power conversion based on adjustable current source, to drive LED module to shine.Conversion electricity Road 2632 includes switching circuit 2635 and accumulator 2638.Conversion circuit 2632 couples filtering output end 521 and 522, connects Receive signal after filtering, and according to the control of controller 2631, by signal after filtering be converted into driving signal and by drive output 1521 and 1522 outputs, to drive LED module.Controller 2631 receives current sense signal S535 and/or current sense signal S539, the driving signal that control conversion circuit 2632 exports are stable in setting electric current value.Wherein, current sense signal S535 The size of current of representation switch circuit 2635；Current sense signal S539 represents the size of current of accumulator 2638, such as: storage Inductive current in energy circuit 2638, the electric current etc. that drive output 1521 is exported.Current sense signal S535's and S539 Any size that can represent driving circuit and be supplied to the electric current Iout of LED module by drive output 1521 and 1522.Control Device 2631 processed more couples filtering output end 521, to determine the big of setting electric current value according to the voltage Vin of filtering output end 521 It is small.Therefore, the electric current Iout of driving circuit, i.e. setting electric current value, can be according to the electricity of signal after the filtering that filter circuit is exported Press the size adjustment of Vin.

It is worth noting that, the generation of above-mentioned current sense signal S535 and S539 can be the side using resistance or inductance Formula weight is surveyed.For example, according to electric current flow through the resistance in conversion circuit 2632 and in the voltage difference that resistance both ends generate, or It can be detectd using the voltage difference that the mutual inductance between the inductance in the inductance and its accumulator 2638 in conversion circuit 2632 generates Survey electric current.

Above-mentioned drive circuit structure, the external drive circuit for being particularly suitable for the straight fluorescent tube of LED is answering for electric ballast Use environment.Equivalent electric ballast is above current source, and output power is not definite value.And it is interior as shown in Fig. 8 C to Fig. 8 F Portion's driving circuit, consumption power is related with the LED quantity of LED module, can be considered definite value.When the output work of electric ballast When rate is higher than the consumption power for the LED module that driving circuit is driven, the output voltage of electric ballast can be continuously improved, so that The power supply mould group of LED light received alternating-current driving signal level can constantly rise and cause to have more than electric ballast and/ Or the power supply mould group of LED light component pressure resistance and damage risk.On the other hand, when the output power of electric ballast is lower than drive When the consumption power for the LED module that dynamic circuit is driven, the output voltage of electric ballast can be reduced constantly, that is, exchange is driven The level of dynamic signal can constantly decline and cause LED straight lamp can not normal operating.

It is worth noting that, power needed for LED light illumination is already less than power needed for the fluorescent lightings such as fluorescent lamp. If such as controlling the controlling mechanism of LED luminance, the driving system traditional applied to electric ballast etc. using previous backlight module etc. System is mismatched or incompatible is asked caused by the power that will necessarily suffer from external drive system is different from the required power of LED light Topic.The problem of even resulting in drive system and/or LED light damage.Problem in order to prevent, using above-mentioned in such as Fig. 8 G Power/current method of adjustment, so that LED (straight tube) lamp is more compatible with traditional fluorescent lamp lighting system.

Fig. 8 H is according to the relation schematic diagram between the voltage Vin and setting electric current value Iout of the utility model embodiment. In Fig. 8 H, wherein horizontal axis is voltage Vin, and the longitudinal axis is electric current Iout.In some cases, after filtering signal voltage Vin When (i.e. level) is between upper voltage limit VH and voltage lower limit value VL, setting electric current value Iout maintains initial setting electric current Value.Upper voltage limit VH is higher than voltage lower limit value VL.When the voltage Vin of signal is higher than upper voltage limit VH after filtering, setting Current value Iout is improved with the increase of voltage Vin.In this stage, preferably slope of a curve rises with voltage Vin and is become Greatly.When the voltage Vin of signal is lower than voltage lower limit value VL after filtering, setting electric current value is reduced with the reduction of voltage Vin.? In this stage, preferably slope of a curve reduces with voltage Vin and is become smaller.It is, when voltage Vin is higher than upper voltage limit VH Or be lower than voltage lower limit value VL when, setting electric current value Iout be preferably voltage Vin quadratic power or more than functional relation, and So that the increment rate (slip) of consumption power is higher than the increment rate (slip) of the output power of external drive system.That is, In some embodiments, quadratic power that the Tuning function of the setting electric current value is filtered voltage Vin or more than function.

In another embodiment, after filtering the voltage Vin of signal between upper voltage limit VH and voltage lower limit value VL When, the setting electric current value Iout of LED light can be increased or decreased and linearly increasing or reduction with voltage Vin.In this stage, work as voltage For Vin in upper voltage limit VH, setting electric current value Iout is in upper current value IH；As voltage Vin limit value VL under voltage, if Constant current value Iout is in lower current value IL.Wherein, upper current value IH is higher than lower current value IL.It is, when voltage Vin is in voltage Between upper limit value VH and voltage lower limit value VL, setting electric current value Iout is the functional relation of the first power of voltage Vin.

By the above-mentioned design in Fig. 8 H, when the output power of electric ballast is higher than the LED that driving circuit is driven When the consumption power of module, voltage Vin can be improved at any time and is more than upper voltage limit VH.When voltage Vin is higher than upper voltage limit When value VH, the increment rate of the consumption power of LED module is higher than the increment rate of the output power of electric ballast, and in voltage Vin When for high balanced voltage VH+ and electric current Iout being high balanced balanced current IH+, output power and consumption power will be balanced or equal. At this point, high balanced voltage VH+ is higher than upper voltage limit VH, and high balanced balanced current IH+ is higher than upper current value VH.On the other hand, when When the output power of electric ballast is lower than the consumption power for the LED module that driving circuit is driven, voltage Vin can subtract at any time It is small and be lower than voltage lower limit value VL.When voltage Vin is lower than voltage lower limit value VL, the slip of the consumption power of LED module is high It in the slip of the output power of electric ballast, and is low balanced voltage VL- in voltage Vin and electric current Iout is low flat When weighing apparatus electric current IL-, output power and consumption power will balances or equal.At this point, low balanced voltage VL- is lower than voltage lower limit value VL, and low balanced balanced current IL- is lower than lower current value IL.

In one embodiment, voltage lower limit value VL is defined as about the 90% of the minimum output voltage of electric ballast, voltage Upper limit value VH is defined as the 110% of maximum output voltage.By taking full voltage 100-277V AC/60HZ as an example, voltage lower limit value VL It is set as 90V (=100V*90%), upper voltage limit VH is set as 305V (=277V*110%).

For example, the capacitor 1634,1734,1834,1934 in the capacitor of driving circuit, such as Fig. 8 C to Fig. 8 F is real Border application above can be two or more capacitors and be formed in parallel.Since inductance, controller, switching switch etc. is in electronic components The higher component of temperature, part or all of capacitor is set to separated with the circuit board of high-temperature component or separate circuit board on, Help that capacitor (especially electrolytic capacitor) is made to avoid impacting the service life of capacitor because of the higher component of temperature, improves capacitor Reliability.Further, it can be also spatially separated because of capacitor and rectification circuit and filter circuit, help to reduce EMI problem.

In some embodiments, the transfer efficiency of driving circuit is 80% or more, preferably 90% or more, more preferably 92% More than.Therefore, when not including driving circuit, the luminous efficiency of the LED light of the utility model is preferably 120lm/W or more, more Good is 160lm/W or more.On the other hand, after driving circuit is in conjunction with LED component, the luminous efficiency of LED light is preferably 120 Lm/W*90%=108lm/W or more, more preferably 160lm/W*92%=147.2lm/W or more.

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

Fig. 9 A is the block diagram according to the power supply mould group of the LED light of the utility model embodiment.Compared with Fig. 8 A, Fig. 9 A's Embodiment includes rectification circuit 510 and rectification circuit 540, filter circuit 520, LED drive module 530, and more increases anti-flashing Circuit 550.Anti-flicker circuit 550 is coupled between filter circuit 520 and LED drive module 530.It should be noted that rectification circuit 540 For omissible circuit, it is represented by dotted lines in figure 9 a.

Anti-flicker circuit 550 couples filtering output end 521 and 522, with signal after accepting filter, and when specific condition, The portion of energy of signal after consumption filtering, to inhibit the phenomenon that the ripple of signal after filtering causes the luminous of LED drive module 530 Occur.In general, there is filter circuit 520 capacitor and/or inductance etc., which to filter, has parasitic electricity on component or circuit Appearance and inductance, and form resonance circuit.Resonance circuit is when AC power source signal stops or stops providing, example: user closes After the power supply of LED light, the amplitude of resonance signal can successively decrease at any time.However, the LED module of LED light is one-way conduction structure Part and require minimum conducting voltage.When the valley value of resonance signal is lower than the minimum conducting voltage of LED module, and crest value is still higher than When the minimum conducting voltage of LED module, the luminous of LED module will appear scintillation.Anti-flicker circuit 550 can flow through at this moment With the electric current of the anti-flashing currents match of setting of LED component, the portion of energy of signal, this portion of energy are higher than humorous after consumption filtering Shake energy difference of the signal between crest value and valley value, and inhibits scintillation.In certain embodiments, preferable opportunity be When signal is close to (and be still higher than) minimum conducting voltage after filtering, anti-flicker circuit 550 works.

It is worth noting that, it does not include driving circuit 1530 that anti-flicker circuit 550, which is more suitable for LED drive module 530, Performance, for example, when LED drive module 530 LED module 630 by filter circuit filtering after (direct) driving of signal send out The applicable cases of light time.At this point, LED module 630 it is luminous will directly reflect filtering after signal change due to its ripple.Herein In the case of, the setting of anti-flicker circuit 550 will inhibit the scintillation that LED light occurs after the power supply for closing LED light.

Fig. 9 B is the schematic diagram according to the anti-flicker circuit of the utility model embodiment.Referring to Fig. 9 B, anti-flicker circuit 650 include an at least resistance, such as: concatenated two resistance is series between filtering output end 521 and 522.In the present embodiment In, anti-flicker circuit 650 persistently consumes the portion of energy of signal after filtering.In LED light normal operating, this portion of energy is far small The energy consumed by LED drive module 530.However, the level of signal drops to LED module after filtering after power supply is closed When near 630 minimum conducting voltage, anti-flicker circuit 650 still consumes the portion of energy of signal after filtering, may be made with offsetting The influence of the resonance signal of 630 light-emitting flash of LED module.In some embodiments, anti-flicker circuit 650 may be set in LED When the minimum conducting voltage of module 630, the electric current more than or equal to anti-flashing current level is flowed through, and based on set electric current It can determine the equivalent anti-flashing resistance value of anti-flicker circuit 650.

Figure 10 A is the block diagram according to the power supply mould group of the LED light of the utility model embodiment.Compared with Fig. 9 A, Figure 10 A Embodiment include rectification circuit 510 and rectification circuit 540, filter circuit 520, LED drive module 530 and anti-flicker circuit 550, and more increase protection circuit 560.Circuit 560 is protected to couple filtering output end 521 and 522, detecting comes from filter circuit Signal is after 520 filtering to decide whether to enter guard mode.When entering guard mode, the limitation of protection circuit 560 inhibits Or after clamp-on filtering signal level size, be damaged to avoid the component in LED drive module 530.Wherein, rectification circuit 540 and anti-flicker circuit 550 be omissible circuit, be represented by dotted lines in Figure 10 A.

Figure 10 B is the schematic diagram according to the protection circuit of the utility model embodiment.Referring to Figure 10 B, circuit 660 is protected Comprising capacitor 663 and 670, resistance 669, diode 672, voltage clamping circuit and bleeder circuit, for working as the electric current of LED module And/or enter guard mode when overtension, and avoid the damage of LED module.Voltage clamping circuit includes bidirectional triode thyristor (TRIAC) 661 and DIAC or bidirectional trigger diode 662.Bleeder circuit includes bipolar junction transistors (BJT) 667 and 668, resistance 665,666,664 and 671.

The first end of bidirectional triode thyristor 661 couples filtering output end 521, and second end couples filtering output end 522, and controls The first end of end coupling bidirectional trigger diode 662.One end of the second end coupling capacitance 663 of bidirectional trigger diode 662, electricity The other end for holding 663 couples filtering output end 522.The second end of one end coupling bidirectional trigger diode 662 of resistance 664, separately One end couples filtering output end 522, and in parallel with capacitor 663.The of one end coupling bidirectional trigger diode 662 of resistance 665 Two ends, the other end couple the collector of bipolar junction transistors 667.The emitter-base bandgap grading coupling filtering of bipolar junction transistors 667 is defeated Outlet 522.The second end of one end coupling bidirectional trigger diode 662 of resistance 666, the other end couple bipolar junction transistors 668 collector and the base stage of bipolar junction transistors 667.The emitter-base bandgap grading coupling filtering output of bipolar junction transistors 668 End 522.The base stage of one end coupling bipolar junction transistors 668 of resistance 669, one end of other end coupling capacitance 670.Electricity The other end for holding 670 couples filtering output end 522.The second end of one end coupling bidirectional trigger diode 662 of resistance 671, separately The cathode of one end coupling diode 672.The anode coupling filtering output end 521 of diode 672.

It is worth noting that, the resistance value of resistance 665 is less than the resistance value of resistance 666.

First illustrate the operation for protecting the overcurrent protection of circuit 660 below.

The tie point of resistance 669 and capacitor 670 receives current sense signal S531, and wherein current sense signal S531 is represented The size of current that LED module flows through.The other end of resistance 671 couples voltage end 521 '.In this embodiment, voltage end 521 ' can With couple a bias generator or as shown as, filtering output end 521 is couple to using signal after filter as inclined by diode 672 Potential source.When voltage end 521 ' couples additional bias generator, diode 672 be can be omitted, and in fig. 1 ob, diode 672 is with void Line indicates.The combination of resistance 669 and capacitor 670 can filter out the radio-frequency component of current sense signal S531, and will filter out rear electricity The base stage of stream detection signal S531 input bipolar junction transistors 668 with control the conductings of bipolar junction transistors 668 with Cut-off.It, can be to avoid because of the bipolar junction transistors 668 caused by noise by the filter action of resistance 669 and capacitor 670 Malfunction.In practical application, resistance 669 and capacitor 670 can be omitted (therefore resistance 669 and capacitor 670 in Figure 10 B with Dotted line indicates).When they are omitted, current sense signal S531 is directly inputted to the base of bipolar junction transistors 668 Pole.

When LED light normal operating the electric current of LED module in the normal range when, bipolar junction transistors 668 are to cut Only, and the base voltage of bipolar junction transistors 667 is drawn high and bipolar junction transistors 667 is led by resistance 666 It is logical.At this point, voltage and resistance of the current potential of the second end of bidirectional trigger diode 662 according to the bias generator of power end 521 ' 671 and resistance 664 in parallel and resistance 665 dividing ratios and determine.Since the resistance value of resistance 665 is smaller, resistance 665 Dividing ratios are lower thus the current potential of the second end of bidirectional trigger diode 662 is lower.At this point, the control of bidirectional triode thyristor 661 Terminal potential is also dragged down by bidirectional trigger diode 662, and bidirectional triode thyristor 661 is to end and make that circuit 660 is protected to be in unprotected State.

When the electric current of LED module is more than an overcurrent value, at this time the level of current sense signal S531 can be excessively high and make pair Carrier junction transistor 668 is connected, and then bipolar junction transistors 668 can drag down bipolar junction transistors 667 The voltage of base stage and make bipolar junction transistors 667 for cut-off.At this point, the electricity of the second end of bidirectional trigger diode 662 Position is according to the voltage and resistance 671 of the bias generator of power end 521 ' and the dividing ratios of the resistance 664 of parallel connection and resistance 666 And it determines.Since the resistance value of resistance 666 is larger, the dividing ratios of resistance 666 are higher thus bidirectional trigger diode 662 second The current potential at end is higher.At this point, the control terminal potential of bidirectional triode thyristor 661 is also drawn high by bidirectional trigger diode 662, it is two-way controllable Silicon 661 is conducting, makes that circuit 660 is protected to be in protection with inhibition or the voltage difference between clamp-on filtering output end 521 and 522 State.

In the present embodiment, trigger voltage of the voltage of the bias generator of power end 521 ' according to bidirectional triode thyristor 661, electricity Resistance 671 and resistance 664 in parallel and the dividing ratios of resistance 665 and resistance 671 and resistance 664 in parallel and resistance 666 Dividing ratios determine.By the partial pressure of the resistance 664 and resistance 665 of resistance 671 and parallel connection, in bidirectional trigger diode 662 The voltage of power end 521 ' will be less than the trigger voltage of bidirectional triode thyristor 661.In addition, passing through resistance 671 and the resistance of parallel connection 664 with the partial pressure of resistance 666, will be above bidirectional triode thyristor 661 in the voltage of the power end 521 ' of bidirectional trigger diode 662 Trigger voltage.For example, in some embodiments, when the electric current of the LED module is greater than overcurrent value, bleeder circuit adjusts resistance 671 and resistance 664 in parallel and resistance 665 dividing ratios so that in the power end 521 ' of bidirectional trigger diode 662 Voltage ratio is higher, and has the function that sluggish compare.Specific implementation aspect, the bipolar junction transistors as switching switch 667 and 668 connect respectively determines the resistance 665 and resistance 666 of dividing ratios.Bleeder circuit according to the electric current of LED module whether Greater than overcurrent value, to determine bipolar junction transistors 667 and the cut-off whichever conducting of 668 whichever, to determine dividing ratios.Pincers pressure Circuit decides whether to inhibit or clamp down on the voltage of LED module according to the partial pressure of bleeder circuit.

Then illustrate the operation for protecting the overvoltage protection of circuit 660.

The tie point of resistance 669 and capacitor 670 receives current sense signal S531, and wherein current sense signal S531 is represented The size of current that LED module flows through.Therefore, protection circuit 660 still has the function of current protection at this time.Resistance 671 it is another End coupling voltage end 521 ', in this embodiment, voltage end 521 ' couples the anode of LED module to detect the voltage of LED module. By taking the above embodiments as an example, in LED drive modules 530 such as the embodiments of Fig. 7 A and Fig. 7 B not comprising driving circuit 1530 In embodiment, voltage end 521 ' couples filtering output end 521；It include driving circuit in LED drive modules 530 such as Fig. 8 A to Fig. 8 G In 1530 embodiment, voltage end 521 ' couples drive output 1521.In the present embodiment, resistance 671 and the resistance of parallel connection 664 will regard voltage end with the dividing ratios of the dividing ratios of resistance 665 and resistance 671 and resistance 664 in parallel and resistance 666 521 ' voltage, the i.e. voltage of drive output 1521 or filtering output end 521 adjust.Therefore, the overcurrent of circuit 660 is protected Protection still can normal operating.

In some embodiments, when LED module normal operating, it is assumed that over-current state, bidirectional trigger diode do not occur Current potential (dividing ratios and voltage end 521 ' based on resistance 671 with resistance 665 in parallel and resistance 664 of 662 second end Voltage determine) be not enough to trigger bidirectional triode thyristor 661.At this point, triggering bidirectional triode thyristor 661 is cut-off, protect at circuit 660 In unprotected state.It on the other hand, is more than an overpressure value when LED module operation exception causes the voltage of the anode of LED module. At this point, the current potential of the second end of bidirectional trigger diode 662 is sufficiently high to be more than double when the first end of bidirectional trigger diode 662 To silicon-controlled 661 trigger voltage when trigger bidirectional triode thyristor 661.At this point, triggering bidirectional triode thyristor 661 is conducting, protection electricity Road 660 is in the level of signal after guard mode and inhibition or clamp-on filtering.

As described above, protection control circuit 660 can have overcurrent or over-voltage protecting function, or can have simultaneously The function of stream and overvoltage protection.

In addition, in some embodiments, protection circuit 660 may include the Zener diode for being connected in parallel to resistance 664, Zener two Pole pipe is used to limit or clamp down on the voltage at 664 both ends of resistance.The breakdown voltage of Zener diode is preferably about 25-50V, more preferably About 36V.

Furthermore bidirectional triode thyristor 661 can be come with thyristor (Silicon Controlled Rectifier, SCR) Instead of without the defencive function of influence protection circuit.It is whole using silicon control when conducting compared with the pressure drop across bidirectional triode thyristor 661 Flowing device pipe replaces bidirectional triode thyristor 661 can be in conducting with the lower pressure drop across thyristor pipe.

In one embodiment, protect the component parameter of circuit 660 that can set as follows.The resistance value of resistance 669 is preferably about 10 Ohm.The capacitance of capacitor 670 is preferably about 1nf.The capacitance of capacitor 633 is preferably about 10nf.Bidirectional trigger diode 662 (conducting) voltage range can be about 26-36V.The resistance value of resistance 671 is preferably about 300K-600K ohm, more preferably about 540K Ohm.The resistance value of resistance 666 is preferably about 100K-300K ohm, more preferably about 220K ohm.The resistance value of resistance 665 is preferably About 30K-100K ohm, more preferably about 40K ohm.The resistance value of resistance 664 is preferably about 100K-300K ohm, more preferably about 220K ohm.

Figure 11 A is the block diagram according to the power supply mould group of the LED light of the utility model embodiment.Compared with Fig. 8 A, Figure 11 A Embodiment include rectification circuit 510 and rectification circuit 540, filter circuit 520, include driving circuit 1530 and LED module 630 LED drive module 530, and also increase mode switching circuit 580.Mode switching circuit 580 couple filtering output end 521 and 522 at least one and drive outputs 1521 and 1522 at least one, carry out the first drive mode to determine Or second drive mode.Wherein, the first drive mode is signal input driving circuit 1530 after filtering, and the second drive mode is The partial component at least bypassing driving circuit 1530, (direct) input of signal after making driving circuit 1530 stop operation and will filter And drive LED module 630.The partial component of bypassed driving circuit 1530 includes inductance or switching switch, makes driving circuit 1530 can not carry out power converter and/or conversion, then stop the operation of signal after conducting filtering.If driving circuit 1530 wraps Containing capacitor, capacitor still can have the function that the voltage at stable LED module both ends to filter out the ripple of signal after filtering. After being filtered when mode switching circuit 580 determines the first drive mode when signal input driving circuit 1530, driving circuit Signal after filtering is converted into driving signal to drive LED module 630 to shine by 1530.On the other hand, work as mode switching circuit When 580 decisions carry out the second drive mode and signal after filtering are directly transported to LED module 630 and bypasses driving circuit 1530, Equivalent upper filter circuit 520 is the driving circuit of LED module 630.Then, signal is LED mould after filter circuit 520 provides filtering The driving signal of block, to drive LED module to shine.

It is worth noting that, the warp that mode switching circuit 580 can be received according to the order or detecting LED light of user Judged by pin 501, pin 502, pin 503 and the 504 received signal of institute of pin, and determines the first drive mode or second Drive mode.By mode switching circuit, the power supply mould group of LED light can correspond to different application environment or drive system, and The mode for being adjusted to or carrying out in drive mode appropriate, thus improve the compatibility of LED light.In some embodiments In, rectification circuit 540 is that can omit circuit, and be therefore represented by dotted lines in Figure 11 A.

Figure 11 B is the schematic diagram according to mode switching circuit in the LED light of the utility model embodiment.Referring to Figure 11 B, mould Formula switching circuit 680 includes mode selector switch 681, is suitable for driving circuit 1630 shown in Fig. 8 C.Referring also to Figure 11 B And Fig. 8 C, there are three endpoint 683,684,685, endpoints 683 to couple drive output 1522, endpoint for the tool of mode selector switch 681 684 coupling filtering output ends 522 and endpoint 685 couple the inductance 1632 of driving circuit 1630.

When mode switching circuit 680 determines first mode, the first of endpoint 683 and 685 is connected in mode selector switch 681 Current path and the second current path for ending endpoint 683 and 684.At this point, drive output 1522 and inductance 1632 couple.Cause This, 1630 normal operation of driving circuit, after accepting filter from filtering output end 521 and 522 signal and be converted into driving signal, It is exported by drive output 1521 and 1522 to drive LED module.

When mode switching circuit 680 determines second mode, the second of endpoint 683 and 684 is connected in mode selector switch 681 Current path and the first current path for ending endpoint 683 and 685.At this point, filtering output end 522 and 1522 coupling of drive output It connects.Therefore, driving circuit 1630 stops operating.Signal inputs drive output by filtering output end 521 and 522 after filtering 1521 and 1522 for driving LED module, and bypasses the inductance 1632 and switching switch 1635 of driving circuit 1630.

Figure 11 C is the schematic diagram according to the mode switching circuit of the LED light of the utility model embodiment.Referring to Figure 11 C, mould Formula switching circuit 780 includes mode selector switch 781, is suitable for driving circuit 1630 shown in Fig. 8 C.Referring also to Figure 11 C And Fig. 8 C, there are three end 783,784,785, endpoints 783 to couple filtering output end 522, endpoint 784 for the tool of mode selector switch 781 It couples drive output 1522 and endpoint 785 couples the switching switch 1635 of driving circuit 1630.

When mode switching circuit 780 determines first mode, the first of endpoint 783 and 785 is connected in mode selector switch 781 Current path and the second current path for ending endpoint 783 and 784.At this point, filtering output end 522 and switching 1635 coupling of switch It connects.Therefore, 1630 normal operation of driving circuit signal and will be converted into driving after accepting filter from filtering output end 521 and 522 Dynamic signal, is exported by drive output 1521 and 1522 for driving LED module.

When mode switching circuit 780 determines second mode, the second of endpoint 783 and 784 is connected in mode selector switch 781 Current path and the first current path for ending endpoint 783 and 785.At this point, filtering output end 522 and 1522 coupling of drive output It connects.Therefore, driving circuit 1630 stops operating.Signal inputs drive output by filtering output end 521 and 522 after filtering 1521 and 1522 for driving LED module, and bypasses the inductance 1632 and switching switch 1635 of driving circuit 1630.

Figure 11 D is the schematic diagram according to the mode switching circuit of the LED light of the utility model embodiment.Referring to Figure 11 D, mould Formula switching circuit 880 includes mode selector switch 881, is suitable for driving circuit 1730 shown in Fig. 8 D.Referring also to Figure 11 D And Fig. 8 D, there are three endpoint 883,884,885, endpoints 883 to couple filtering output end 521, endpoint for the tool of mode selector switch 881 884 coupling drive outputs 1521 and endpoint 885 couple the inductance 1732 of driving circuit 1730.

When mode switching circuit 880 determines first mode, the first of endpoint 883 and 885 is connected in mode selector switch 881 Current path and the second current path for ending endpoint 883 and 884.At this point, filtering output end 521 and inductance 1732 couple.Cause This, 1730 normal operation of driving circuit, after accepting filter from filtering output end 521 and 522 signal and be converted into driving signal, It is exported by drive output 1521 and 1522 for driving LED module.

When mode switching circuit 880 determines second mode, the second of endpoint 883 and 884 is connected in mode selector switch 881 Current path and the first current path for ending endpoint 883 and 885.At this point, filtering output end 521 and 1521 coupling of drive output It connects.Therefore, driving circuit 1730 stops operating.Signal inputs drive output by filtering output end 521 and 522 after filtering 1521 and 1522 for driving LED module, and bypasses the inductance 1732 and freewheeling diode 1733 of driving circuit 1730.

Figure 11 E is the schematic diagram according to the mode switching circuit of the LED light of the utility model embodiment.Referring to Figure 11 E, mould Formula switching circuit 980 includes mode selector switch 981, is suitable for driving circuit 1730 shown in Fig. 8 D.Referring also to Figure 11 E And Fig. 8 D, there are three endpoint 983,984,985, endpoints 983 to couple drive output 1521, endpoint for the tool of mode selector switch 981 984 coupling filtering output ends 521 and endpoint 985 couple the cathode of the freewheeling diode 1733 of driving circuit 1730.

When mode switching circuit 980 determines first mode, the first of endpoint 983 and 985 is connected in mode selector switch 981 Current path and the second current path for ending endpoint 983 and 984.At this point, the cathode of freewheeling diode 1733 and filtering export 521 coupling of end.Therefore, 1730 normal operation of driving circuit, after accepting filter from filtering output end 521 and 522 signal and turn It changes driving signal into, is exported by drive output 1521 and 1522 for driving LED module.

When mode switching circuit 980 determines second mode, the second of endpoint 983 and 984 is connected in mode selector switch 981 Current path and the first current path for ending endpoint 983 and 985.At this point, filtering output end 521 and 1521 coupling of drive output It connects.Therefore, driving circuit 1730 stops operating.Signal inputs drive output by filtering output end 521 and 522 after filtering 1521 and 1522 for driving LED module, and bypasses the inductance 1732 and freewheeling diode 1733 of driving circuit 1730.

Figure 11 F is the schematic diagram according to the mode switching circuit of the LED light of the utility model embodiment.Referring to Figure 11 F, mould Formula switching circuit 1680 includes mode selector switch 1681, is suitable for driving circuit 1830 shown in Fig. 8 E.Referring also to Figure 11 F And Fig. 8 E, there are three endpoint 1683,1684,1685, endpoints 1683 to couple filtering output end 521 for the tool of mode selector switch 1681, Endpoint 1684 couples drive output 1521 and endpoint 1685 couples the switching switch 1835 of driving circuit 1830.

When mode switching circuit 1680 determines first mode, endpoint 1683 and 1685 is connected in mode selector switch 1681 First current path and the second current path for ending endpoint 1683 and 1684.At this point, filtering output end 521 and switching switch 1835 couplings.Therefore, 1830 normal operation of driving circuit signal and will be converted after accepting filter from filtering output end 521 and 522 At driving signal, exported by drive output 1521 and 1522 for driving LED module.

When mode switching circuit 1680 determines second mode, endpoint 1683 and 1684 is connected in mode selector switch 1681 Second current path and the first current path for ending endpoint 1683 and 1685.At this point, filtering output end 521 and drive output 1521 couplings.Therefore, driving circuit 1830 stops operating.Signal inputs driving output by filtering output end 521 and 522 after filtering End 1521 and 1522 bypasses the inductance 1832 and switching switch 1835 of driving circuit 1830 for driving LED module.

Figure 11 G is the schematic diagram according to the mode switching circuit of the LED light of the utility model embodiment.Referring to Figure 11 G, mould Formula switching circuit 1780 includes mode selector switch 1781, is suitable for driving circuit 1830 shown in Fig. 8 E.Referring also to Figure 11 G And Fig. 8 E, there are three endpoint 1783,1784,1785, endpoints 1783 to couple filtering output end 521 for the tool of mode selector switch 1781, Endpoint 1784 couples drive output 1521 and endpoint 1785 couples the inductance 1832 of driving circuit 1830.

When mode switching circuit 1780 determines first mode, endpoint 1783 and 1785 is connected in mode selector switch 1781 First current path and the second current path for ending endpoint 1783 and 1784.At this point, filtering output end 521 and 1832 coupling of inductance It connects.Therefore, 1830 normal operation of driving circuit signal and will be converted into driving after accepting filter from filtering output end 521 and 522 Dynamic signal, is exported by drive output 1521 and 1522 for driving LED module.

When mode switching circuit 1780 determines second mode, endpoint 1783 and 1784 is connected in mode selector switch 1781 Second current path and the first current path for ending endpoint 1783 and 1785.At this point, filtering output end 521 and drive output 1521 couplings.Therefore, driving circuit 1830 stops operating.Signal inputs driving output by filtering output end 521 and 522 after filtering End 1521 and 1522 bypasses the inductance 1832 and switching switch 1835 of driving circuit 1830 for driving LED module.

Figure 11 H is the schematic diagram according to the mode switching circuit of the LED light of the utility model embodiment.Referring to Figure 11 H, mould Formula switching circuit 1880 includes mode selector switch 1881 and 1882, is suitable for driving circuit 1930 shown in Fig. 8 F.Join simultaneously See Figure 11 H and Fig. 8 F, there are three endpoint 1883,1884,1885, the coupling driving outputs of endpoint 1883 for the tool of mode selector switch 1881 End 1521, endpoint 1884 couples filtering output end 521 and endpoint 1885 couples the freewheeling diode 1933 of driving circuit 1930. There are three endpoint 1886,1887,1888, endpoints 1886 to couple drive output 1522, endpoint for the tool of mode selector switch 1882 1887 coupling filtering output ends 522 and endpoint 1888 couple filtering output end 521.

When mode switching circuit 1880 determines first mode, endpoint 1883 and 1885 is connected in mode selector switch 1881 First current path and end endpoint 1883 and 1884 the second current path and mode selector switch 1882 be connected endpoint 1886 and 1888 third current path and the 4th current path for ending endpoint 1886 and 1887.At this point, drive output 1521 couple with freewheeling diode 1933, and filtering output end 521 and drive output 1522 couple.Therefore, driving circuit 1930 normal operations, after accepting filter from filtering output end 521 and 522 signal and be converted into driving signal, by driving export 1521 and 1522 output of end is for driving LED module.

When mode switching circuit 1880 determines second mode, endpoint 1883 and 1884 is connected in mode selector switch 1881 Second current path and end endpoint 1883 and 1885 the first current path and mode selector switch 1882 be connected endpoint 1886 and 1887 the 4th current path and the third current path for ending endpoint 1886 and 1888.At this point, filtering output end 521 It is coupled with drive output 1521, and filtering output end 522 and drive output 1522 couple.Therefore, driving circuit 1930 It stops operating.Signal inputs drive output 1521 and 1522 for driving LED mould by filtering output end 521 and 522 after filtering Block, and bypass the freewheeling diode 1933 and switching switch 1935 of driving circuit 1930.

Figure 11 I is the schematic diagram according to the mode switching circuit of the LED light of the utility model embodiment.Referring to Figure 11 I, mould Formula switching circuit 1980 includes mode selector switch 1981 and 1982, is suitable for driving circuit 1930 shown in Fig. 8 F.Join simultaneously See Figure 11 I and Fig. 8 F, there are three endpoint 1983,1984,1985, the coupling filtering outputs of endpoint 1983 for the tool of mode selector switch 1981 End 522, endpoint 1984 couples drive output 1522 and endpoint 1985 couples the switching switch 1935 of driving circuit 1930.Mould Formula switches the tool of switch 1982 there are three endpoint 1986,1987,1988, and endpoint 1986 couples filtering output end 521,1987 coupling of endpoint It connects drive output 1521 and endpoint 1988 couples drive output 1522.

When mode switching circuit 1980 determines first mode, endpoint 1983 and 1985 is connected in mode selector switch 1981 First current path and end endpoint 1983 and 1984 the second current path and mode selector switch 1982 be connected endpoint 1986 and 1988 third current path and the 4th current path for ending endpoint 1986 and 1987.At this point, filtering output end 522 It is coupled with switching switch 1935, and filtering output end 521 and drive output 1522 couple.Therefore, driving circuit 1930 is normal Running signal and will be converted into driving signal after accepting filter from filtering output end 521 and 522, by drive output 1521 and 1522 outputs are for driving LED module.

When mode switching circuit 1980 determines second mode, endpoint 1983 and 1984 is connected in mode selector switch 1981 Second current path and end endpoint 1983 and 1985 the first current path and mode selector switch 1982 be connected endpoint 1986 and 1987 the 4th current path and the third current path for ending endpoint 1986 and 1988.At this point, filtering output end 521 It is coupled with drive output 1521, and filtering output end 522 and drive output 1522 couple.Therefore, driving circuit 1930 It stops operating.Signal inputs drive output 1521 and 1522 for driving LED mould by filtering output end 521 and 522 after filtering Block, and bypass the freewheeling diode 1933 and switching switch 1935 of driving circuit 1930.

It is worth noting that, the mode selector switch in above-described embodiment may, for example, be single-pole double-throw switch (SPDT) or two Semiconductor switch (such as: metal-oxide half field effect transistor), for switching one of two current paths as conducting, another is to cut Only.Each current path be provided for filtering after signal guiding path, make filtering after signal electric current flow through wherein it One reaches the function of model selection.For example, please referring also to Fig. 3 A, Fig. 3 B and Fig. 3 D, when lamp tube drive circuit 505 not When directly supplying electricity to LED straight lamp 500 in the presence of and by AC power source 508, mode switching circuit can determine first mode, by driving Signal after filtering is converted into driving signal by dynamic circuit (such as driving circuit 1530,1630,1730,1830 or 1930), makes to drive The level of dynamic signal can match LED module and shine required level, and be able to correctly drive LED module luminous.On the other hand, In the presence of lamp tube drive circuit 505, mode switching circuit can determine second mode, directly be driven by signal after filtering (almost) Dynamic LED module shines；Or alternatively mode switching circuit can determine first mode to drive LED module to shine.

Figure 12 A is the block schematic diagram according to the power supply mould group of the LED light of the utility model embodiment.Compared to Fig. 3 E institute Show embodiment, the fluorescent lamp of the embodiment of Figure 12 A includes rectification circuit 510 and rectification circuit 540, filter circuit 520 and LED Drive module 530, and more increase ballast compatible circuit 1510.Ballast compatible circuit 1510 can be coupled to pin 501 and/or pin Between 502 and rectification circuit 510.In the present embodiment, pin 501 and rectification circuit are coupled to ballast compatible circuit 1510 Between for illustrate.In addition to Figure 12 A, please referring also to Fig. 3 A, Fig. 3 B and Fig. 3 D, lamp tube drive circuit 505 are electronic ballast Device provides alternating-current driving signal to drive the LED light of the present embodiment.

At the beginning of the drive system starting of lamp tube drive circuit 505, lamp tube drive circuit 505 exports the ability of related signal It is not yet promoted to normal condition completely.However, the power supply mould group of LED lamp is connected or receives immediately or rapidly at the beginning of starting Alternating-current driving signal provided by lamp tube drive circuit 505.At the beginning of this will cause starting, in lamp tube drive circuit 505 by LED light LED light can not be started by lamp tube drive circuit 505 when initial loading.For example, the internal component of lamp tube drive circuit 505 The output converted from lamp tube drive circuit 505 takes electricity, to maintain the operation after starting.At this point, output voltage can not it is normal on Be raised to starting at the beginning of needed for level and cause lamp tube drive circuit 505 starting fail or lamp tube drive circuit 505 resonance The Q value of circuit change because of the addition of the load of LED light and can not be successfully starting etc..

The ballast compatible circuit 1510 of the present embodiment will be presented open-circuit condition, make alternating-current driving signal at the beginning of starting Energy can not be input to LED module.By setting after being input to LED straight lamp as the alternating-current driving signal of external drive signal After fixed delay time, ballast compatible circuit 1510 is switched on state from the dissengaged positions of timing period, drives exchange The energy of signal starts to be input to LED lamp module.By the delay feature of ballast compatible circuit 1510, the operation simulation of LED lamp The starting characteristic of fluorescent lamp, i.e. driving power start internal gas ability regular picture after latter section of delay time and shine.Cause This, ballast compatible circuit 1510 further improves LED light to the compatibility of the lamp tube drive circuits such as electric ballast 505.

In the present embodiment, rectification circuit 540 is omissible circuit, is represented by dotted lines in fig. 12.

Figure 12 B is the block diagram according to the power supply mould group of the LED light of the utility model embodiment.Compared to shown in Figure 12 A Embodiment, the ballast compatible circuit 1510 of the embodiment in Figure 12 B can be coupled to pin 503 and/or pin 504 and rectification Between circuit 540.Such as the explanation of ballast compatible circuit 1510 in Figure 12 A, the ballast compatible circuit 1510 in Figure 12 B has delay The effect for starting LED light, the time for setting the input delay of alternating-current driving signal avoid the fluorescent tubes such as electric ballast from driving The problem of starting failure of circuit 505.

Ballast compatible circuit 1510 such as above-described embodiment other than being placed between pin and rectification circuit, the compatible electricity of ballast Road 1510 can also correspond to the framework of different rectification circuits and rearrange within rectification circuit.Figure 12 C is practical new according to this The configuration of the ballast compatible circuit of the LED light of type preferred embodiment.Referring to Figure 12 C, in figure 4 c, rectification circuit uses Fig. 4 C institute The circuit framework of the rectification circuit 810 shown.Rectification circuit 810 includes rectification unit 815 and endpoint conversion circuit 541.Rectification is single Member 815 couples pin 501 and pin 502, and endpoint conversion circuit 541 couples rectification output end 511 and rectification output end 512, and Ballast compatible circuit 1510 is coupled between rectification unit 815 and endpoint conversion circuit 541.At the beginning of ballast starting, as The alternating-current driving signal of external drive signal starts to input LED straight lamp, and alternating-current driving signal is only capable of by rectification unit 815, And cannot pass through filter circuit and the LED drive module of endpoint conversion circuit 541 and inside etc., and in rectification unit 815 The parasitic capacitance of rectifier diode 811 and rectifier diode 812 is fairly small negligible.Therefore, the power supply mould group of LED light is equivalent Lamp tube drive circuit 505 is not inductively or capacitively loaded or is effectively connected at the beginning of starting, because without negatively affecting lamp The Q value of tube drive circuit 505 and can make LED light by lamp tube drive circuit 505 smoothly start.

It is worth noting that, under the premise of endpoint conversion circuit 541 does not include and inductively or capacitively waits components, rectification unit 815 and endpoint conversion circuit 541 exchange, that is, rectification unit 815 couples rectification output end 511 and rectification output end 512, end Point conversion circuit 541 couples pin 501 and pin 502 has no effect on or change the function of ballast compatible circuit 1510.

Furthermore such as the explanation of Fig. 4 A to Fig. 4 D, the pin 501 and pin 502 of rectification circuit are changed to pin 503 and connect When foot 504, rectification circuit 540 can be used as.That is, the circuit configuration of the above-mentioned ballast compatible circuit 1510 in Figure 12 C can also be with It is changed in rectification circuit 540 rather than in rectification circuit 810, the function without influencing ballast compatible circuit 1510.

In addition, as before endpoint conversion circuit 541 do not include inductively or capacitively equal components or rectification circuit 510 or When rectification circuit 540 is using rectification circuit 610 as shown in Figure 4 A, the parasitic capacitance phase of rectification circuit 510 or rectification circuit 540 When small and therefore can be ignored, the Q value of lamp tube drive circuit 505 will not be influenced.

Figure 12 D is the block diagram according to the power supply mould group of the LED light of the utility model embodiment.Compared to shown in Figure 12 A The ballast compatible circuit 1510 of embodiment, the embodiment of Figure 12 D is coupled between rectification circuit 540 and filter circuit 520.As above Illustrate, the rectification circuit 540 in the present embodiment do not include inductively or capacitively equal components, therefore the not embodiment of influence diagram 12D The function of ballast compatible circuit 1510.

Figure 12 E is the block diagram according to the power supply mould group of the LED light of the utility model embodiment.Compared to shown in Figure 12 A The ballast compatible circuit 1510 of embodiment, the embodiment of Figure 12 E is coupled between rectification circuit 510 and filter circuit 520.Equally Ground, the rectification circuit 510 in the present embodiment do not include inductively or capacitively equal components, therefore the not town of the embodiment of influence diagram 12E Flow the function of compatible circuit 1510.

Figure 12 F is the schematic diagram according to the ballast compatible circuit of the utility model embodiment.Referring to Figure 12 F, ballast is compatible It is open circuit that original state in circuit 1610, which is on equivalent between the compatible input terminal 1611 of ballast and the compatible output end 1621 of ballast,. After the compatible input terminal 1611 of ballast receives signal, be set the time is just connected ballast and is compatible with input terminal ballast compatible circuit 1610 1611 and the compatible output end 1621 of ballast, so that the compatible 1611 received signals of institute of input terminal of ballast is transmitted to the compatible output of ballast End 1621.

Ballast compatible circuit 1610 include diode 1612, resistance 1613,1615,1618,1620 and 1622, it is two-way can Control silicon 1614, DIAC or bidirectional trigger diode 1617, capacitor 1619, the compatible input terminal 1611 of ballast and the compatible output of ballast End 1621.It should be noted that the resistance value of resistance 1613 should be quite big, therefore when bidirectional triode thyristor 1614 ends under open-circuit condition, It is equivalent upper for open circuit between the compatible input terminal 1611 of ballast and the compatible output end 1621 of ballast.

Bidirectional triode thyristor 1614 is coupled between the compatible input terminal 1611 of ballast and the compatible output end 1621 of ballast, resistance 1613 be also coupled to it is in parallel with bidirectional triode thyristor 1614 between the compatible input terminal 1611 of ballast and the compatible output end 1621 of ballast. Diode 1612, resistance 1620,1622 and capacitor 1619 are sequentially series at the compatible input terminal 1611 of ballast and the compatible output of ballast Between end 1621, and it is in parallel with bidirectional triode thyristor 1614.The anode of diode 1612 is connect with bidirectional triode thyristor 1614, and is born Pole is connected to one end of resistance 1620.The control terminal of bidirectional triode thyristor 1614 is connected with one end of bidirectional trigger diode 1617, The other end of bidirectional trigger diode 1617 is connected with one end of resistance 1618, the other end coupling capacitance 1619 of resistance 1618 And the connecting pin of resistance 1622.Resistance 1615 is coupled to the control terminal and resistance 1613 and capacitor 1619 of bidirectional triode thyristor 1614 Connecting pin between.

When alternating-current driving signal (such as: high frequency that electric ballast is exported, high-voltage alternating signal) starts to be input to town When flowing compatible input terminal 1611, bidirectional triode thyristor 1614 is first in open-circuit condition, makes alternating-current driving signal that can not input and make LED Lamp is also at open-circuit condition.Alternating-current driving signal starts to charge to capacitor 1619 by diode 1612, resistance 1620,1622, It is gradually increasing the voltage of capacitor 1619.After lasting charging a period of time, the voltage of capacitor 1619 is increased to more than two-way triggering The threshold values of diode 1617 and make trigger bidirectional trigger diode 1617 be connected.Then, the bidirectional trigger diode 1617 of conducting Bidirectional triode thyristor 1614 is triggered, bidirectional triode thyristor 1614 is also switched on.At this point, the bidirectional triode thyristor 1614 of conducting is electrically connected town Compatible input terminal 1611 and the compatible output end 1621 of ballast are flowed, makes alternating-current driving signal via the compatible input terminal 1611 of ballast and town It flows compatible output end 1621 to input, the power supply mould group of LED light is made to start to operate.In addition, the energy stored by capacitor 1619 maintains Bidirectional triode thyristor 1614 is connected, and causes bidirectional triode thyristor 1614 to avoid the exchange variation of alternating-current driving signal, i.e. ballast is compatible The cut-off once again of circuit 1610, or avoid the problem that bidirectional triode thyristor 1614 replaces or changes between conducting and cut-off.

Through several hundred milliseconds, the output voltage of electric ballast after the starting of lamp tube drive circuits 505 such as general electric ballast It can be improved on certain voltage value and be unlikely to be loaded the adverse effect being added by LED light.In addition, electric ballast Equal lamp tube drive circuits 505 can be equipped with detecting fluorescent lamp whether the detecting mechanism of lighting, if being more than the non-lighting of time fluorescent lamp Judge that fluorescent lamp is abnormal and enters guard mode.Therefore, in certain embodiments, ballast compatible circuit 1610 and then LED The delay time of ballast compatible circuit 1610 is preferably between about 0.1 second to 3 seconds before lamp conducting.

It is worth noting that, resistance 1622 can additional shunt capacitance 1623.The effect of capacitor 1623 is to reflect or prop up The instantaneous variation of voltage difference between the compatible input terminal 1611 of ballast and the compatible output end 1621 of ballast is held, and it is compatible not influence ballast The effect of the turn on delay of circuit 1610.

Figure 12 G is the block diagram according to the power supply mould group of the LED straight lamp of the utility model embodiment.Compared to Fig. 3 D institute Show embodiment, the lamp tube drive circuit 505 of the embodiment of Figure 12 G drives multiple concatenated LED straight lamps 500, and each LED Ballast compatible circuit 1610 is installed in straight lamp 500.For convenience of description, below with two concatenated LED straight lamps 500 For illustrate.

When because of delay of the ballast compatible circuit 1610 in two LED straight lamps 500 before the conducting of LED straight lamp 500 Between there is different delay times due to the influence of the factors such as error in component production process, therefore two ballast compatible circuits 1610 to be actually turned on the time not consistent.When lamp tube drive circuit 505 starts, lamp tube drive circuit 505 is provided to be exchanged The voltage of driving signal is substantially respectively born by two LED straight lamps 500.Then when ballast compatible circuit 1610 wherein it One when being first connected, and the voltage of the alternating-current driving signal of lamp tube drive circuit 505 almost or fully falls in the another be not yet connected On LED straight lamp 500.This increases the cross-pressure on the ballast compatible circuit 1610 of the LED straight lamp 500 be not yet connected suddenly Or double, i.e., voltage difference doubles suddenly between the compatible input terminal 1611 of ballast and the compatible output end 1621 of ballast.Due to electricity Hold 1623 presence, the partial pressure effect of capacitor 1619 and 1623 can draw high the voltage of capacitor 1619 moment, so that two-way triggering two Pole pipe 1617 triggers bidirectional triode thyristor 1614 and is connected, and keeps the ballast compatible circuit 1610 of two LED straight lamps 500 almost same When be connected.By the addition of capacitor 1623, prolonging because of ballast compatible circuit 1610 between concatenated LED straight lamp 500 can avoid The slow time is different, causes the bidirectional triode thyristor 1614 in the ballast compatible circuit 1610 be first connected because maintaining the electric current of conducting insufficient And the problem of ending once again.Therefore, the ballast compatible circuit 1610 for capacitor 1623 being added can further improve concatenated LED straight tube The compatibility of lamp.

In practical application, the suggestion capacitance of capacitor 1623 is the preferably about 10pF~about between about 10pF~about 1nF 100PF, more preferably about 47pF.

It is worth noting that, diode 1612 to or be configured to capacitor 1619 charge signal rectify.Therefore, 2C, Figure 12 D and Figure 12 E referring to Figure 1, the case where ballast compatible circuit 1610 is configured at after rectification unit or rectification circuit Under, diode 1612 can be omitted.Therefore, in Figure 12 F, diode 1612 is represented by dotted lines.

Figure 12 H is the schematic diagram according to the ballast compatible circuit of another embodiment of the utility model.Referring to Figure 12 H, ballast It is equivalent open that original state in compatible circuit 1710, which is between the compatible input terminal 1711 of ballast and the compatible output end 1721 of ballast, Road.After the compatible input terminal 1711 of ballast receives input signal, it is less than and ballast compatible circuit in the level of external drive signal When 1710 turn on delay time corresponding setting value ballast compatible circuit 1710 is cut-off, in the external drive signal of input Ballast compatible circuit 1710 is conducting when level is greater than the set value, and input signal is made to be transmitted to the compatible output end 1721 of ballast.

Ballast compatible circuit 1710 include bidirectional triode thyristor 1712, DIAC or bidirectional trigger diode 1713, resistance 1714, 1716 and 1717 and capacitor 1715.The compatible input terminal 1711 of first end coupling ballast of bidirectional triode thyristor 1712, control terminal coupling One end of bidirectional trigger diode 1713 and one end of resistance 1714, and the other end of second end coupling resistance 1714.Capacitor The other end of 1715 one end coupling bidirectional trigger diode 1713, the other end couple the second end of bidirectional triode thyristor 1712. Resistance 1717 is in parallel with capacitor 1715, therefore is also coupled to the other end and bidirectional triode thyristor 1712 of bidirectional trigger diode 1713 Second end.The tie point of one end coupling bidirectional trigger diode 1713 and capacitor 1715 of resistance 1716, the other end couple ballast Compatible output end 1721.

When alternating-current driving signal (such as: high frequency that electric ballast is exported, high-voltage alternating signal) starts to be input to town When flowing compatible input terminal 1711, bidirectional triode thyristor 1712 is first in off state, makes alternating-current driving signal that can not input and make LED Lamp is also at open-circuit condition.The input of alternating-current driving signal can in the compatible input terminal 1711 of the ballast of ballast compatible circuit 1710 and Voltage difference is caused between the compatible output end 1721 of ballast.When alternating-current driving signal becomes larger at any time and reaches after a period of time When enough amplitude (setting delay reference position values), the level of the compatible output end 1721 of ballast is by resistance 1716, capacitor in parallel 1715 and resistance 1717 and resistance 1714 reflection to bidirectional triode thyristor 1712 control terminal and trigger bidirectional triode thyristor 1712 and lead It is logical.At this point, ballast compatible circuit 1710 is connected and makes LED light normal operating.After the conducting of bidirectional triode thyristor 1712, resistance 1716 Electric current is flowed through, and charges capacitor 1715 to store certain voltage in capacitor 1715.Energy stored by capacitor 1715 maintains Bidirectional triode thyristor 1712 is connected, and causes bidirectional triode thyristor 1712 to avoid the exchange variation of alternating-current driving signal, i.e. ballast is compatible The cut-off once again of circuit 1710, or avoid the problem that bidirectional triode thyristor 1712 replaces or changes between conducting and cut-off.

Figure 12 I is the schematic diagram according to the ballast compatible circuit of the utility model embodiment.Referring to Figure 12 I, ballast is compatible Circuit 1810 includes shell 1812, metal electrode 1813, bimetal leaf 1814 and heater strip 1816.Metal electrode 1813 and Heater strip 1816 is pierced by by shell 1812, therefore partially in shell 1812, partially except shell 1812.Moreover, metal is electric Part of the pole 1813 outside shell has the compatible input terminal 1811 of ballast, and part of the heater strip 1816 outside shell has ballast simultaneous Hold output end 1821.Shell 1812 is sealing state, interior filled with inert gas 1815, such as: helium.Bimetal leaf 1814 is located at In shell 1812, and it is electrically connected with part physical of the heater strip 1816 inside shell 1812.Bimetal leaf 1814 with There are certain intervals, therefore the compatible input terminal 1811 of ballast and the compatible output end 1821 of ballast are initial between metal electrode 1813 State is not electrically connected.There are two the sheet metals of different temperature coefficients for the tool of bimetal leaf 1814, close to 1813 side of metal electrode Sheet metal temperature coefficient it is lower, and it is higher from the farther away sheet metal temperature coefficient of metal electrode 1813.

When alternating-current driving signal (such as: high frequency that electric ballast is exported, high-voltage alternating signal) starts to be input to town When flowing compatible input terminal 1811 and ballast compatibility output end 1821, current potential will form between metal electrode 1813 and heater strip 1816 Difference.Can puncture inert gas 1815 when potential difference arrives greatly and electric arc occurs or when arc discharge, that is, when alternating-current driving signal with When time becomes larger and reaches setting delay reference position value after a period of time, the fever of inert gas 1815 keeps bimetal leaf 1814 past Metal electrode 1813 expands and finally makes bimetal leaf close to (referring to the direction of dotted arrow in Figure 12 I), and by expansion 1814 contact with metal electrode 1813 and form physical electrical connection.At this point, the compatible input terminal 1811 of ballast and ballast are compatible Output end 1821 is connected each other.Then, alternating-current driving signal flows through heater strip 1816, and heater strip 1816 is made to generate heat.At this point, heating Silk 1816 flows through an electric current when metal electrode 1813 and the bimetal leaf 1814 are electric conducting state, makes bimetal leaf 1814 Temperature maintain be greater than one setting be connected temperature.The sheet metal of two different temperature coefficients of bimetal leaf 1814 is maintained because of temperature Temperature is connected greater than setting, and touches bimetal leaf 1814 to 1813 deviation of metal electrode, thus maintains or support double gold Belong to the physical bond or connection of piece 1814 and metal electrode 1813.

Therefore, ballast compatible circuit 1810 receives input in the compatible input terminal 1811 of ballast and the compatible output end 1821 of ballast After signal, being set the time is just connected the compatible input terminal 1811 of ballast and the compatible output end 1821 of ballast.

Therefore, exemplary ballast compatible circuit as described herein, can be coupled to any pin and any rectified current Between road, setting ballast compatible circuit is cut-off within delay time in external drive signal starts to input LED straight lamp, in Set delay time after for conducting or ballast compatible circuit in the external drive signal of input level be less than it is compatible with ballast It is cut-off when the corresponding setting value of the turn on delay time of circuit, the level of Yu Zhenliu compatible circuit external drive signal, which is greater than, to be set It is conducting when definite value.Therefore, LED straight lamp pair as described herein is further improved by using this ballast compatible circuit The compatibility of the lamp tube drive circuits such as electric ballast 505.

Figure 13 A is the block diagram according to the power supply mould group of the LED straight lamp of the utility model embodiment.Compared to Fig. 3 E institute Show embodiment, the fluorescent lamp of the present embodiment includes that rectification circuit 510 and rectification circuit 540, filter circuit 520 and LED drive mould Block 530, and more increase by two ballast compatible circuits 1540.Two ballast compatible circuits 1540 are respectively coupled to pin 503 and rectification is defeated Between outlet 511 and between pin 504 and rectification output end 511.Please referring also to Fig. 3 A, Fig. 3 B and Fig. 3 D, fluorescent tube drive Dynamic circuit 505 is electric ballast, provides alternating-current driving signal to drive the LED light of the present embodiment.

The original state of two ballast compatible circuits 1540 is conducting, and is ended after a period of time.Therefore, it is driven in fluorescent tube At the beginning of circuit 505 starts, alternating-current driving signal through pin 503, corresponding ballast compatible circuit 1540 and rectification output end 511 and Rectification circuit 510 or pin 504, corresponding ballast compatible circuit 1540 and rectification output end 511 and rectification circuit 510 flow through LED lamp, and bypassed the filter circuit 520 inside LED light and LED drive module 530.Whereby, in lamp tube drive circuit 505 At the beginning of starting, the equivalent zero load of LED light, LED light does not influence the Q of lamp tube drive circuit 505 at the beginning of lamp tube drive circuit 505 starts It is worth and starts lamp tube drive circuit 505 smoothly.Two ballast compatible circuits 1540 end after a period of time, at this time lamp Tube drive circuit 505 smoothly starts.Later, there is lamp tube drive circuit 505 enough driving capabilities LED light to be driven to send out Light.

Figure 13 B is the block diagram according to the power supply mould group of the LED straight lamp of the utility model embodiment.Compared to Figure 13 A Illustrated embodiment, the configuration of the two ballast compatible circuits 1540 of the present embodiment is changed to be respectively coupled to pin 503 and rectification exports Between end 512 and between pin 504 and rectification output end 512.Similarly, the original state of two ballast compatible circuits 1540 is Conducting, and end after being set delay time.505 ability of lamp tube drive circuit after lamp tube drive circuit 505 smoothly starting as a result, Start that LED light is driven to shine.

It is worth noting that, the configuration of two ballast compatible circuits 1540 be also readily modified as being respectively coupled to pin 501 with it is whole It flows between output end 511 and between pin 502 and rectification output end 511, or is changed to be respectively coupled to pin 501 and rectification Between output end 512 and between pin 502 and rectification output end 512, still lamp tube drive circuit 505 can be made smoothly to open Just start that LED light is driven to shine after dynamic.

Figure 13 C is the block diagram according to the power supply mould group of the LED straight lamp of the utility model embodiment.Compared to Figure 13 A And embodiment shown in Figure 13 B, the rectification circuit 540 of the present embodiment is changed to rectification circuit 810 shown in Fig. 4 C, wherein rectifying The rectification unit 815 of circuit 810 couples pin 503 and pin 504, and endpoint conversion circuit 541 couples rectification output end 511 and whole Flow output end 512.The configuration of two ballast compatible circuits 1540 be also changed to be respectively coupled to pin 501 and half-wave tie point 819 it Between and pin 502 and half-wave tie point 819 between.

At the beginning of lamp tube drive circuit 505 starts, the original state of two ballast compatible circuits 1540 is conducting.At this point, handing over Stream driving signal is through pin 501, corresponding ballast compatible circuit 1540, half-wave tie point 819 and rectification unit 815 or pin 502, corresponding ballast compatible circuit 1540 and half-wave tie point 819 and rectification unit 815 flow through LED light, and have bypassed LED Endpoint conversion circuit 541, filter circuit 520 and LED drive module 530 inside lamp.Whereby, it is opened in lamp tube drive circuit 505 At the beginning of dynamic, the equivalent zero load of LED light, LED light does not influence the Q of lamp tube drive circuit 505 at the beginning of lamp tube drive circuit 505 starts It is worth and starts lamp tube drive circuit 505 smoothly.Two ballast compatible circuits 1540 end after a period of time, at this time lamp Tube drive circuit 505 smoothly starts.Later, there is lamp tube drive circuit 505 enough driving capabilities LED light to be driven to send out Light.

It is worth noting that, the embodiment of Figure 13 C is also readily modified as rectification circuit 510 rather than rectification circuit 540 uses Rectification circuit 810 shown in Fig. 4 C, wherein rectification unit 815 couples pin 501 and pin 502, and endpoint conversion circuit 541 couples Rectification output end 511 and rectification output end 512；The configuration of two ballast compatible circuits 1540 is also changed to be respectively coupled to pin 503 Between half-wave tie point 819 and between pin 504 and half-wave tie point 819.

Figure 13 D is that can be applied to Figure 13 A to figure according to the schematic diagram of the ballast compatible circuit of the utility model embodiment Variation described in embodiment shown in 13C and corresponding explanation.

Ballast compatible circuit 1640 includes resistance 1643,1645,1648 and 1650, capacitor 1644 and 1649；Diode 1647 and the compatible input terminal 1641 of 1652, bipolar junction transistors 1646 and 1651, ballast and the compatible output end 1642 of ballast. 1645 one end of resistance connects the compatible input terminal 1641 of ballast, and the other end couples the emitter-base bandgap grading of bipolar junction transistors 1646.Double loads The anode of the collector coupling diode 1647 of sub- junction transistor 1646, and the compatible output of the cathode of diode 1647 coupling ballast End 1642.Resistance 1643 and capacitor 1644 are series between the emitter-base bandgap grading and collector of bipolar junction transistors 1646, and resistance 1643 and capacitor 1644 tie point coupling bipolar junction transistors 1646 base stage.It is compatible that 1650 one end of resistance connects ballast Output end 1642, the other end couple the emitter-base bandgap grading of bipolar junction transistors 1651.The collector coupling of bipolar junction transistors 1651 The anode of diode 1652 is connect, and the cathode of diode 1652 couples the compatible input terminal 1641 of ballast.Resistance 1648 and capacitor 1649 are series between the emitter-base bandgap grading and collector of bipolar junction transistors 1651, and the tie point of resistance 1648 and capacitor 1649 Couple the base stage of bipolar junction transistors 1651.

When the lamp tube drive circuit 505 of such as electric ballast just starts, the voltage across capacitor 1644 and 1649 is about 0.The base stage of bipolar junction transistors 1646 and 1651 flows through a constant current and in the conductive state at this time.Therefore, in fluorescent tube At the beginning of driving circuit 505 activates, ballast compatible circuit 1640 is in the conductive state.Alternating-current driving signal is through resistance 1643 and two poles Pipe 1647 charges to capacitor 1644, similarly charges through resistance 1648 and diode 1652 to capacitor 1649.After a certain period of time The voltage of capacitor 1644 and 1649 increases makes the voltage of resistance 1643 and 1648 reduce and end two-carrier and connect to a certain extent Junction transistor 1646 and 1651 (i.e. bipolar junction transistors 1646 and 1651 are in off state).At this point, the compatible electricity of ballast Road 1640 switchs to off state.Whereby, internal capacitance or inductance do not influence the Q value of lamp tube drive circuit 505 when starting, really Protect the smooth starting of lamp tube drive circuit 505.Therefore, ballast compatible circuit 1640 can improve LED light to electric ballast Compatibility.

In conclusion two ballast compatible circuits of the utility model, it is respectively coupled in rectification circuit and filter circuit Between one tie point (i.e. rectification output end 511 and rectification output end 512 one of them) and pin 501 and rectification circuit and filtering Between the tie point and pin 502 of circuit, or be respectively coupled to the tie point of rectification circuit and filter circuit and pin 503 it Between and the tie point and pin 504 of rectification circuit and filter circuit between.Two ballast compatible circuits are interrogated in the external drive Number start to input the LED straight lamp and rise in a setting delay time to change for conducting to end after the setting delay time Compatibility of the kind LED light to electric ballast.

Figure 14 A is the block diagram according to the power supply mould group of the LED straight lamp of the utility model embodiment.Compared to Fig. 3 E institute Show embodiment, the LED straight lamp of the present embodiment includes that rectification circuit 510 and rectification circuit 540, filter circuit 520 and LED drive Dynamic model block 530, and more increase by two filament artificial circuits 1560.Two filament artificial circuits 1560 are respectively coupled to pin 501 and connect It between foot 502 and is coupled between pin 503 and pin 504, to improve the lamp tube drive circuit example with filament detecting Such as the compatibility of program actuated type ballast.

At the beginning of starting, whether the filament that can detect fluorescent tube does not occur normally lamp tube drive circuit with filament detecting The abnormal conditions of short circuit or open circuit.When judging that filament is abnormal, lamp tube drive circuit can stop and enter guard mode.For It avoids making lamp tube drive circuit judge LED light exception without filament due to LED straight lamp, two filament artificial circuits 1560 can To emulate the operation of the actual lamp filaments of fluorescent tube, and so that lamp tube drive circuit is normally started driving LED light and shine.

Figure 14 B is the schematic diagram according to the filament artificial circuit of the utility model embodiment.Filament artificial circuit 1660 wraps Containing capacitor 1663 and resistance 1665 in parallel, and the respective both ends of capacitor 1663 and resistance 1665 are respectively coupled to filament analog end 1661 and 1662.The filament emulation end 1661 and 1662 of please referring also to Figure 14 A, two filament artificial circuits 1660 couple pin 501 and pin 502 and pin 503 and pin 504.During filament detecting process, lamp tube drive circuit exports detection signal It is whether normal to test filament.Detection signal can be such that lamp tube drive circuit judges by capacitor 1663 and resistance 1665 in parallel Whether the filament of LED light is normal.

It is worth noting that, the capacitance of capacitor 1663 is smaller, therefore since lamp tube drive circuit exports high-frequency ac signal To drive LED light, the capacitive reactance (equivalent resistance) of capacitor 1663 is much smaller than the resistance value of resistance 1665.Whereby, filament artificial circuit 1660 in LED light normal operating, and consumed power is fairly small and has little influence on the luminous efficiency of LED light.

Figure 14 C is the block schematic diagram according to the filament artificial circuit of the utility model embodiment.In the present embodiment, Rectification circuit 510 and/or rectification circuit 540 in LED light using rectification circuit 810 shown in Fig. 4 C but omit endpoint conversion Circuit 541, and replace the function of endpoint conversion circuit 541 by filament artificial circuit 1660.That is, the filament of the present embodiment emulates Circuit 1660 has filament emulation and endpoint conversion function simultaneously.Please referring also to Figure 14 A, the lamp of filament artificial circuit 1660 Silk emulation end 1661 and 1662 couples pin 501 and pin 502 and/or pin 503 and pin 504.In rectification circuit 810 The half-wave tie point 819 of rectification unit 815 couples filament analog end 1662.

Figure 14 D is the block schematic diagram according to the filament artificial circuit of some embodiments of the utility model.Compared to Figure 14 C Shown in embodiment, half-wave tie point 819 is changed to coupling filament analog end 1661, and the filament artificial circuit 1660 of the present embodiment Still there is filament emulation and endpoint conversion function simultaneously.

Figure 14 E is the schematic diagram according to the filament artificial circuit of another embodiment of the utility model.Filament artificial circuit 1760 include capacitor 1763 and 1764 and resistance 1765 and 1766.Capacitor 1763 and 1764 is series at filament analog end 1661 And between 1662.Resistance 1765 and 1766 is also series between filament analog end 1661 and 1662, and resistance 1765 and 1766 The tie point of tie point and capacitor 1763 and 1764 couples.The filament of please referring also to Figure 14 A, two filament artificial circuits 1760 are imitative True 1661 and 1662 coupling pin 501 of end and pin 502 and pin 503 and pin 504.When lamp tube drive circuit output is detectd Survey signal with test filament it is whether normal when, detection signal can by concatenated capacitor 1763 and 1764 and resistance 1765 and 1766 and so that lamp tube drive circuit is judged whether the filament of LED light normal.

It is worth noting that, in some embodiments, the capacitance of capacitor 1763 and 1764 is small, therefore since fluorescent tube drives electricity Road is to drive LED light and export high-frequency ac signal, the remote small concatenated resistance 1765 of the capacitive reactance of concatenated capacitor 1763 and 1764 And 1766 resistance value.Whereby, filament artificial circuit 1760 is in LED light normal operating, consumed power it is fairly small and almost The luminous efficiency of LED light is not influenced.Furthermore capacitor 1763 or any open circuit of resistance 1765 or short circuit or capacitor 1764 or electricity 1766 any open circuits or short circuit are hindered, detection signal can still flow through filament artificial circuit between filament analog end 1661 and 1662 1760.Therefore, capacitor 1763 or resistance 1765 it is any open circuit or short circuit and/or capacitor 1764 or resistance 1766 it is any open circuit or Short circuit, filament artificial circuit 1760 still can normal operation and have quite high serious forgiveness.

Figure 14 F is the block schematic diagram according to the filament artificial circuit of the utility model embodiment.In the present embodiment, whole Current circuit 510 and/or rectification circuit 540 using rectification circuit 810 shown in Fig. 4 C but omit endpoint conversion circuit 541, and by The function of the substitution endpoint conversion circuit 541 of filament artificial circuit 1860.For example, the filament artificial circuit 1860 of the present embodiment is also same When have filament emulation and endpoint conversion function.Filament artificial circuit 1860 has the resistance value of negative temperature coefficient, when temperature is high Resistance value lower than resistance value when the temperature is low.In the present embodiment, filament artificial circuit 1860 contains two negative temperature coefficients electricity Resistance 1863 and 1864, connects and is coupled between filament analog end 1661 and 1662.Please referring also to Figure 14 A, filament emulation electricity The filament emulation end 1661 and 1662 on road 1860 couples pin 501 and pin 502 and/or pin 503 and pin 504.Rectification The half-wave tie point 819 of rectification unit 815 in circuit 810 couples the tie point of negative temperature coefficient resister 1863 and 1864.

When lamp tube drive circuit export detection signal with test filament it is whether normal when, detection signal can pass through negative temperature system It counts resistance 1863 and 1864 and lamp tube drive circuit is made to judge whether the filament of LED light is normal.And negative temperature coefficient resister 1863 and 1864 are gradually increasing because of test signal or preheating program, temperature and reduce resistance value.When lamp tube drive circuit enters normally When state is normally to start LED light, the resistance value of concatenated negative temperature coefficient resister 1863 and 1864 is reduced to relative low value, thus Reduce the loss of the power consumption of filament artificial circuit 1860.

The resistance value of filament artificial circuit 1860 preferably drives for 10 ohm or more when room temperature (25 DEG C) and in fluorescent tube When circuit enters normal condition, the resistance value of filament artificial circuit 1860 is down to about 2~10 ohm；More preferably, it is driven in fluorescent tube The resistance value of filament artificial circuit 1860 is down between about 3~6 ohm when circuit enters normal condition.

Figure 15 A is the block diagram according to the power supply mould group of the LED straight lamp of the utility model embodiment.Compared to Fig. 3 E institute Show embodiment, the LED straight lamp of the present embodiment includes that rectification circuit 510 and rectification circuit 540, filter circuit 520 and LED drive Dynamic model block 530, and more increase overvoltage crowbar 1570.Overvoltage crowbar 1570 couples filtering output end 521 and 522, with Signal after detecting filtering.When the level of signal is higher than setting overpressure value after filtering, after 1570 clamp-on filtering of overvoltage crowbar The level of signal.Therefore, the component that overvoltage crowbar 1570 can protect LED drive module 530 is not damaged because crossing high pressure. Rectification circuit 540 is that can omit, therefore be represented by dotted lines in the example shown.

Figure 15 B is the schematic diagram according to the overvoltage crowbar of the utility model embodiment.Overvoltage crowbar 1670 wraps Containing zener diode 1671, such as: Zener diode (Zener Diode) couples filtering output end 521 and 522.Two pole of pressure stabilizing Pipe 1671 in filtering output end 521 and 522 voltage difference (that is, filtering after signal level) reach breakdown voltage when conducting, make Voltage difference is clamped down in breakdown voltage.Breakdown voltage is preferably in the range of about 40V~about 100V, and more preferably about 55V~about The range of 75V.

Figure 16 A is the block diagram according to the power supply mould group of the LED straight lamp of the utility model embodiment.Compared to Figure 14 A Embodiment, the LED light of the present embodiment includes rectification circuit 510 and rectification circuit 540, filter circuit 520, LED drive module 530 and two filament artificial circuits 1560, and more increase ballast circuit for detecting 1590.Ballast circuit for detecting 1590 can be coupled to Pin 501, pin 502, pin 503 and pin 504 any and rectification circuit 510 and rectification circuit 540 in corresponding rectification Circuit.In the present embodiment, ballast circuit for detecting 1590 is coupled between pin 501 and rectification circuit 510.

Ballast circuit for detecting 1590 detects alternating-current driving signal or by pin 501, pin 502, pin 503 and pin The signals of 504 inputs, and judge whether inputted signal is provided by electric ballast according to detecting result.

Figure 16 B is the block diagram according to the power supply mould group of the LED straight lamp of the utility model embodiment.Compared to Figure 16 A Embodiment, using rectification circuit 810 shown in Fig. 4 C replace rectification circuit 540.Ballast circuit for detecting 1590 is coupled to rectification Between unit 815 and endpoint conversion circuit 541.One of rectification unit 815 and endpoint conversion circuit 541 coupling pin 503 And pin 504, another coupling rectification output end 511 and rectification output end 512.In the present embodiment, rectification unit 815 couples pin 503 and pin 504, and endpoint conversion circuit 541 couples rectification output end 511 and rectification output end 512.Similarly, ballast is detectd Slowdown monitoring circuit 1590 detects the signal inputted by pin 503 or pin 504, according to the frequency of input signal to judge whether it is Electric ballast is provided.

Furthermore rectification circuit 810 also can replace rectification circuit 510, rather than replace rectification circuit 540, and ballast is detectd Slowdown monitoring circuit 1590 is coupled between the rectification unit 815 and endpoint conversion circuit 541 in rectification circuit 510.

Figure 16 C is the block diagram according to the ballast circuit for detecting of the utility model embodiment.Ballast circuit for detecting 1590 wraps 1590a containing circuit for detecting and switching circuit 1590b.Switching circuit 1590b couples switch terminal 1591 and 1592.Circuit for detecting 1590a couples sense terminal 1593 and 1594 to detect the signal for flowing through sense terminal 1593 and 1594.Alternatively, switch terminal 1591 and 1592 are used as sense terminal and omit sense terminal 1593 and 1594.For example, in certain embodiments, circuit for detecting 1590a and cut It changes circuit 1590b and is commonly coupled to switch terminal 1591 and 1592, and circuit for detecting 1590a detecting flows through switch terminal 1591 And 1592 signal.Therefore, sense terminal 1593 and 1594 is represented by dotted lines in diagram.

Figure 16 D is the schematic diagram according to the ballast circuit for detecting of the utility model embodiment.Ballast circuit for detecting 1690 wraps 1690a containing circuit for detecting and switching circuit 1690b, is coupled between switch terminal 1591 and 1592.Circuit for detecting 1690a includes Bidirectional trigger diode 1691, resistance 1692 and 1696 and capacitor 1693,1697 and 1698.Switching circuit 1690b includes double To silicon-controlled 1699 and inductance 1694.

Capacitor 1698 is coupled between switch terminal 1591 and 1592, to respond the news for flowing through switch terminal 1591 and 1592 Number and generate detecting voltage.When signal is high-frequency signals, the capacitive reactance of capacitor 1698 is at a fairly low, and the detecting voltage phase generated Work as height.Resistance 1692 and capacitor 1693 are series at the both ends of capacitor 1698.Concatenated resistance 1692 and capacitor 1693 are used for electricity Hold 1698 produced detecting voltages to be filtered and detect electricity after the tie point of resistance 1692 and capacitor 1693 generates filtering Pressure.The filter action of resistance 1692 and capacitor 1693 is the high-frequency noise to filter out detecting voltage, is made to avoid high-frequency noise At the malfunction of switching circuit 1690b.Resistance 1696 and capacitor 1697 are series at the both ends of capacitor 1693, it will filter after Detecting voltage is transferred to one end of bidirectional trigger diode 1691.Resistance 1696 and capacitor 1697 are simultaneously to detecting voltage after filtering It carries out second to filter, changes the filter effect of circuit for detecting 1690a more preferably.According to different applications and noise filtering demand, Capacitor 1697 can choose omission and one end of bidirectional trigger diode 1691 passes through resistance 1696 and is coupled to resistance 1692 and electricity Hold 1693 tie point；Alternatively, resistance 1696 and capacitor 1697 omit simultaneously and one end of bidirectional trigger diode 1691 is direct It is coupled to the tie point of resistance 1692 and capacitor 1693.Therefore resistance 1696 and capacitor 1697 are represented by dotted lines in the example shown.It is two-way The other end of diac 1691 is coupled to the control terminal of the bidirectional triode thyristor 1699 of switching circuit 1690b.Two-way triggering two Pole pipe 1691 is two-way controllable to trigger to decide whether to generate control signal 1695 according to the signal reference position size received Silicon 1699 is connected.The first end of bidirectional triode thyristor 1699 couples switch terminal 1591, and second end couples switch terminal by inductance 1694 1592.The effect of inductance 1694 is to protect bidirectional triode thyristor 1699 not because the signal for flowing through switch terminal 1591 and 1592 is more than most Under big switching voltage build-up rate, off state repeatedly voltage peak and maximum switching electric current change rate and damage.

When switch terminal 1591 and 1592 received signals are low-frequency ac signal or DC signal, what capacitor 1698 generated Detecting voltage makes bidirectional trigger diode 1691 generate control signal 1695 to trigger bidirectional triode thyristor 1699 for sufficiently high.This When, it is short circuit between switch terminal 1591 and 1592, and switching circuit 1690b circuit in parallel has been bypassed, such as: it is connected to and cuts Change circuit, circuit for detecting 1690a, the capacitor 1698 etc. between end 1591 and 1592.

In some embodiments, when switch terminal 1591 and 1592 received signals are high-frequency ac signal, capacitor 1698 The detecting voltage of generation is not sufficient to that bidirectional trigger diode 1691 is made to generate control signal 1695 to trigger bidirectional triode thyristor 1699.At this point, bidirectional triode thyristor 1699 is cut-off, high-frequency ac signal is mainly passed via external circuit or circuit for detecting 1690a It passs.

Therefore, ballast circuit for detecting 1690 may determine that whether the signal of input is that high frequency provided by electric ballast is handed over Signal is flowed, if high-frequency ac signal is then made to flow through external circuit or circuit for detecting 1690a；If otherwise bypassing external circuit or detecing Slowdown monitoring circuit 1690a makes input signal flow through switching circuit 1690b.

It is worth noting that, capacitor 1698 can be replaced with the capacitor in external circuit, and such as: it holds shown in Fig. 5 A to Fig. 5 C An at least capacitor for point conversion circuit embodiment.Therefore, capacitor 1698 can be omitted, therefore is represented by dotted lines in illustrating.

Figure 16 E is the schematic diagram according to the ballast circuit for detecting of the utility model embodiment.Ballast circuit for detecting 1790 wraps 1790a containing circuit for detecting and switching circuit 1790b.Switching circuit 1790b is coupled between switch terminal 1591 and 1592.It detects Slowdown monitoring circuit 1790a is coupled between sense terminal 1593 and 1594.Circuit for detecting 1790a include mutual inductance inductance 1791 and 1792, Capacitor 1793 and 1796, resistance 1794 and diode 1797.Switching circuit 1790b includes switching switch 1799.In this implementation Example, switching switch 1799 is the vague and general formula metal-oxide half field effect transistor of p-type (P-type Depletion Mode MOSFET), when it It is conducting when being lower than the critical voltage to end when gate voltage is higher than a critical voltage.

Inductance 1792 is coupled between sense terminal 1593 and 1594, according to the electric current for flowing through sense terminal 1593 and 1594 Signal mutual inductance makes inductance 1791 generate detecting voltage to inductance 1791.The level of voltage is detected as the frequency of current signal becomes Change, and can increase with the frequency and increase and reduce with the reduction of the frequency.

In some embodiments, when signal is high-frequency signals, the induction reactance of inductance 1792 is quite high, mutual inductance to inductance 1791 And generate quite high detecting voltage.When signal is low-frequency signal or DC signal, the induction reactance of inductance 1792 is at a fairly low, mutual inductance Rather low detecting voltage is generated to inductance 1791.One end of inductance 1791 is grounded.Concatenated capacitor 1793 and resistance 1794 It is in parallel with inductance 1791.Capacitor 1793 and resistance 1794, which receive, detects voltage produced by inductance 1791, and after carrying out High frequency filter Voltage is detected after generating filtering.Voltage is detected after filtering to charge to generate control signal to capacitor 1796 after diode 1797 1795.It unidirectionally charges since diode 1797 provides capacitor 1796, therefore the level of the control signal 1795 of the generation of capacitor 1796 is The maximum value of the detecting voltage of inductance 1791.The control terminal of the coupling switching switch 1799 of capacitor 1796.Switch the of switch 1799 One end and second end are respectively coupled to switch terminal 1591 and 1592.

When sense terminal 1593 and 1594 received signals are low-frequency ac signal or DC signal, produced by capacitor 1796 Control signal 1795 lower than switching switch 1799 critical voltage and make switch switch 1799 conducting.At this point, switch terminal 1591 And be short circuit between 1592, and switching circuit 1790b external circuit in parallel has been bypassed, and such as: it is held shown in Fig. 5 A to Fig. 5 C At least capacitor etc. in point conversion circuit embodiment.

When sense terminal 1593 and 1594 received signals are high-frequency ac signal, control news caused by capacitor 1796 Numbers 1795 are higher than the critical voltage of switching switch 1799 and make to switch the cut-off of switch 1799.At this point, high-frequency ac signal mainly passes through It is transmitted by external circuit.

Therefore, ballast circuit for detecting 1790 may determine that whether the signal of input is that high frequency provided by electric ballast is handed over Signal is flowed, if high-frequency ac signal is then made to flow through external circuit；If otherwise bypassing external circuit, input signal is made to flow through switching Circuit 1790b.

Addition ballast circuit for detecting in LED light will be illustrated next, the conducting (bypass) and cut-off of switching circuit be not (other It is logical) operation exemplary embodiment.For example, the coupling of switch terminal 1591 and 1592 and the concatenated capacitor of LED light, that is, drive The signal of dynamic LED straight lamp can also flow through this capacitor.This capacitor, which can be set, connects in the inside of LED straight lamp with internal circuit Or it connects outside LED straight lamp with LED straight lamp.Please referring also to Fig. 3 A, Fig. 3 B or Fig. 3 D, work as lamp tube drive circuit In the absence of 505, AC power source 508 provides low pressure, low-frequency ac driving signal drives LED straight tube as external drive signal Lamp 500.At this point, the switching circuit of ballast circuit for detecting is connected, the alternating-current driving signal of AC power source 508 is made to directly drive LED The internal circuit of straight lamp.In the presence of lamp tube drive circuit 505, lamp tube drive circuit 505 generates high pressure, high-frequency ac signal As external drive signal to drive LED straight lamp 500.At this point, the switching circuit of ballast circuit for detecting is ended, this capacitor with The equivalent capacity of LED straight lamp internal circuit is connected, thus forms capacitive divider network.Whereby, can make to be applied to LED straight The partial pressure of spot internal circuit lower than high pressure, high-frequency ac signal (such as: partial pressure fall in the range of 100-277V) to avoid Internal circuit is damaged because of high pressure.Implement alternatively, switch terminal 1591 and 1592 couples endpoint conversion circuit shown in Fig. 5 A to Fig. 5 C Capacitor in example, the signal for flowing through half-wave tie point 819 also simultaneously flow through this capacitor, for example, the capacitor 642 of Fig. 5 A, The capacitor 842 of Fig. 5 C.When lamp tube drive circuit 505 generates high pressure, the input of high-frequency ac signal, switching circuit cut-off makes electricity Appearance can achieve partial pressure effect；When the input of the DC signal of the low-frequency ac signal of alternating current or battery, switching circuit bypass electricity Hold.

It is worth noting that, switching circuit may include multiple switching members, come simultaneously with providing more than two switch terminals The multiple capacitors of connection connection (such as: the capacitor 743 of the capacitor 643,645 and 646 of the capacitor 645 of Fig. 5 A and 646, Fig. 5 A, Fig. 5 B With the capacitor 842,843 of the capacitor 845 and 846, Fig. 5 C of the capacitor 843 of 744 and/or 745 and 746, Fig. 5 C and 844, Fig. 5 C and 844, the capacitor 842,845 and 846 of Fig. 5 C, the capacitor 842,843,844,845 of Fig. 5 C and 846), multiple capacitors are bypassed.

In addition, the ballast circuit for detecting of the utility model can be in conjunction with mode switching circuit shown in Figure 11 A to Figure 11 I It uses.Switching circuit replaces in mode for switching circuit in ballast circuit for detecting.Circuit for detecting coupling in ballast circuit for detecting It is connected to one of input pin 501, pin 502, pin 503 and pin 504, to detect via pin 501, pin 502, connect Foot 503 and pin 504 are input to the signal of LED light.Whether circuit for detecting is high frequency, low frequency or DC signal according to signal, i.e., Control signal is generated according to the frequency of signal, switching circuit is first mode or second mode for controlling the mode.

For example, when signal is high-frequency signals and is higher than setting pattern switching frequency, such as: by lamp tube drive circuit High-frequency signals provided by 505, the control signal that circuit for detecting generates will make mode switching circuit second mode, will be described Signal directly inputs the LED module after filtering；It is lower than setting pattern switching frequency when signal is low frequency or DC signal When, such as: signal provided by alternating current or battery, the control signal that circuit for detecting generates will make the first mould of mode switching circuit Signal after the filtering is directly inputted the driving circuit by formula.

Figure 17 A is the block diagram according to the power supply mould group of the LED straight lamp of the utility model embodiment.Compared to Figure 14 A Illustrated embodiment, the LED straight lamp of the present embodiment include that rectification circuit 510 and rectification circuit 540, filter circuit 520, LED drive Dynamic model block 530 and two filament artificial circuits 1560, and more increase auxiliary power module 2510.Auxiliary power module 2510 is coupled to Between filtering output end 521 and filtering output end 522.Auxiliary power module 2510 detects filtering output end 521 and filtering exports Signal after filtering on end 522, and offer auxiliary power is decided whether to filtering output end 521 according to detecting result and is filtered defeated Outlet 522.When signal stops providing or exchanging level deficiency after filtering, i.e., when the driving voltage of LED module is lower than an auxiliary When voltage, auxiliary power module 2510 provides auxiliary power, makes LED drive module 530 can be with continuous illumination.Boost voltage according to One accessory power supply voltage of auxiliary power module 2510 and determine.Rectification circuit 540 and two filament artificial circuits 1560 are can be with It omits, is represented by dotted lines in the example shown.

Figure 17 B is the block diagram according to the power supply mould group of the LED straight lamp of the utility model embodiment.Compared to Figure 17 A Illustrated embodiment, the LED straight lamp of the present embodiment include that rectification circuit 510 and rectification circuit 540, filter circuit 520, LED drive Dynamic model block 530, two filament artificial circuits 1560, and LED drive module 530 also includes driving circuit 1530 and LED module 630. Auxiliary power module 2510 couples between drive output 1521 and 1522.

Auxiliary power module 2510 detects the driving signal of drive output 1521 and 1522, and is determined according to detecting result Whether auxiliary power is provided to drive output 1521 and 1522.It is auxiliary when driving signal to stop providing or exchanging level deficiency It helps power module 2510 to provide auxiliary power, makes LED module 630 can be with continuous illumination.Rectification circuit 540 and two filaments emulation electricity Road 1560 is that can be omitted, and is represented by dotted lines in the example shown.

Figure 17 C is the schematic diagram according to the auxiliary power module of the utility model embodiment.Auxiliary power module 2610 wraps Containing energy-storage units 2613 and voltage detection circuit 2614.Auxiliary power module 2610 further includes accessory power supply anode 2611 and auxiliary Power supply negative terminal 2612 is helped to be respectively coupled to filtering output end 521 and filtering output end 522 or drive output 1521 and 1522.Electricity Press circuit for detecting 2614 to detect the level of signal on accessory power supply anode 2611 and accessory power supply negative terminal 2612, with decide whether by The electric power of energy-storage units 2613 is discharged outward by accessory power supply anode 2611 and accessory power supply negative terminal 2612.

In the present embodiment, energy-storage units 2613 are battery or super capacitor.When accessory power supply anode 2611 and auxiliary electricity When the voltage difference (driving voltage of LED module) of source negative terminal 2612 is higher than the boost voltage of energy-storage units 2613, detecting voltage electricity It is charged with the signal on accessory power supply anode 2611 and accessory power supply negative terminal 2612 to energy-storage units 2613 on road 2614.Work as driving When voltage is lower than boost voltage, energy-storage units 2613 are released through 2612 pairs of outsides of accessory power supply anode 2611 and accessory power supply negative terminal Put the energy of storage.

Voltage detection circuit 2614 includes diode 2615, bipolar junction transistors 2616 and resistance 2617.Diode The anode of 2615 anode coupling energy-storage units 2613, the cathode of diode 2615 couple accessory power supply anode 2611.Energy storage list The cathode of member 2613 couples accessory power supply negative terminal 2612.The collector of bipolar junction transistors 2616 couples accessory power supply anode 2611, emitter-base bandgap grading couples the anode of energy-storage units 2613.2617 one end of resistance couples accessory power supply anode 2611, and other end coupling is double The base stage of carrier junction transistor 2616.Resistance 2617 is higher than emitter-base bandgap grading one conducting in the collector of bipolar junction transistors 2616 When voltage, bipolar junction transistors 2616 are connected.When the power supply of driving LED straight lamp is normal, signal is through filtering after filtering Wave output terminal 521 and filtering output end 522 and the bipolar junction transistors 2616 of conducting charge to energy-storage units 2613, or Drive signal through the bipolar junction transistors 2616 of drive output 1521 and drive output 1522 and conducting to energy storage list Member 2613 charges, until collector-emitter-base bandgap grading voltage difference of bipolar junction transistors 2616 is equal to or less than conducting voltage. Signal or driving signal stop providing or when level are insufficient suddenly after filtering, and energy-storage units 2613 are mentioned by diode 2615 For electric power to LED drive module 530 or LED module 630 to maintain to shine.

It is worth noting that, in some embodiments, the ceiling voltage after energy-storage units 2613 charge will be at least below applying It is added on the electric conduction of one bipolar junction transistors 2616 of voltage of accessory power supply anode 2611 and accessory power supply negative terminal 2612 Pressure.It is lower than the voltage of energy-storage units 2613 by the voltage difference exported between accessory power supply anode 2611 and accessory power supply negative terminal 2612 The threshold voltage of one diode 2615.Therefore, when auxiliary power module 2610 starts power supply, it is applied to LED module 630 Voltage is by lower (summation for being approximately equal to the threshold voltage of diode 2615 and the conducting voltage of bipolar junction transistors 2616). In the embodiment shown in Figure 17 B, auxiliary power module can be such that the brightness of LED module 630 is decreased obviously when powering.In this way, working as When auxiliary power module is applied to emergency lighting system or is always on lighting system, user is known that key lighting power supply, such as: city Electricity, it is abnormal, and the necessary precautionary measures can be carried out.

Figure 18 is the block diagram according to the power supply mould group of the LED straight lamp of the utility model embodiment.Compared to above-mentioned The driving circuit of the embodiment of LED straight lamp, the LED straight lamp of the present embodiment is mounted on outside LED straight lamp.That is, LED straight tube Lamp 3500 is driven by external drive end 3501 and 3502 by external driving power 3530 and is shone.In LED straight lamp 3500 only Comprising LED module 630 and current control circuit 3510, and rectification circuit, filter circuit and driving circuit are not included.Implement herein In example, external drive end 3501 and 3502 is acted on pin 501 shown in Fig. 3 A and Fig. 3 B and pin 502.

External driving power 3530 can be directly connected to alternating current or electric ballast, to receive electric power and be converted into external drive Signal simultaneously inputs LED straight lamp 3500 through external drive end 3501 and 3502.External drive signal can be DC signal, more Good is stable DC stream signal.In normal operation, current control circuit 3510 is in the conductive state, makes LED mould Block 630 flows through electric current and shines.Current control circuit 3510 can also detect the electric current of LED module 630 to carry out pressure stabilizing or steady Flow control, and have the function of ripple removal.In abnormal work situation, the cut-off of current control circuit 3510 is external to stop providing The electric power of driving power 3530 is to LED module 630, to enter guard mode.

When current control circuit 3510 judges the electric current of LED module 630 lower than setting electric current value or the lower limit of setting range When, current control circuit 3510 is in fully on state, i.e. the impedance of current control circuit 3510 is reduced to minimum value.

When current control circuit 3510 judges that the electric current of LED module 630 is higher than the upper limit of setting electric current value or setting range When, current control circuit 3510 is in off state, ends the electric power input LED straight lamp 3500 of external driving power 3530. In some embodiments, the upper limit of setting range is the value more than 630 rated current of LED module about 30%.Whereby, in external drive When the driving capability of dynamic power supply 3530 reduces, current control circuit 3510 can maintain the brightness of LED lamp as far as possible.Moreover, outside When setting the driving capability exception raising of driving power 3530, current control circuit 3510 can also avoid LED module 630 because of overcurrent And damage, thus current control circuit 3510 has the function of overcurrent protection.

It is worth noting that, external driving power 3530 is also possible to DC voltage signal.In normal operation, electricity Flow control circuit 3510 stablizes the electric current of LED module 630 or in linear working state (that is, the electric current of LED module 630 is with straight Flow the level linear change of voltage signal).In order to which the current control of LED module 630 in certain current value or is in linear work Make state, DC voltage signal provided by external driving power 3530 is higher, and the cross-pressure on current control circuit 3510 is higher And make the power consumption of current control circuit 3510 also can be higher.Current control circuit 3510 can be equipped with temperature sensor.When outer Set DC voltage signal provided by driving power 3530 it is excessively high when, current control circuit 3510 enters overheat protector, and cut-off is outer Set the electric power input LED straight lamp 3500 of driving power 3530.Such as: when temperature sensor detects current control circuit When 3510 temperature is more than 120 °, current control circuit 3510 enters overheat protector.According to such design, current control circuit 3510 can have the function of excess temperature or overvoltage protection simultaneously.

In some embodiments, because of the structure using external driving power, the length dimension of lamp cap is shortened.To guarantee The entire length of LED light meets the regulation of fluorescent lamp, and the length of lamp cap cripetura is supplied by the length of prolonging lamp tube.Because of fluorescent tube Length have extension, correspondingly extend LED lamp plate length.Under same lighting condition, between being attached between the LED in LED lamp panel Every that can increase accordingly, since interval increases, the radiating efficiency of LED can be improved in this way, reduce temperature when LED is operated, and can Extend the service life of LED straight lamp.

The utility model LED straight lamp in each embodiment realization with as previously described.It needs to point out, each In embodiment, for same root LED straight lamp, including " fluorescent tube has structure-reinforced end regions ", " LED lamp panel use Flexible circuit board ", " fluorescent tube inner peripheral surface is coated with adhesive film ", " fluorescent tube inner peripheral surface is coated with diffusion barrier ", " Covers have diffusion barrier Piece ", " tube inner wall is coated with reflectance coating ", " lamp cap includes heat-conducting part ", " lamp cap includes magnetic conductive metal piece ", " LED light source has Bracket ", " utilizing circuit board member connection LED lamp panel and power supply " feature, can be only single in practice or integrally apply, So that only implementing a feature or implementing several features simultaneously.

In addition, about " fluorescent tube have structure-reinforced end regions ", " LED lamp panel uses flexible circuit board ", " in fluorescent tube Circumferential surface is coated with adhesive film ", " fluorescent tube inner peripheral surface is coated with diffusion barrier ", " Covers have diffusion barrier sheet ", " tube inner wall is coated with reflection Film ", " lamp cap includes magnetic conductive metal piece ", " LED light source has bracket ", " utilizes circuit board member at " lamp cap includes heat-conducting part " (including long circuit board and short circuit board) connects LED lamp panel and power supply ", " rectification circuit ", " filter circuit ", " driving circuit ", " endpoint conversion circuit ", " anti-flicker circuit ", " protection circuit ", " mode switching circuit ", " overvoltage crowbar ", " ballast is detectd Any feature in the features such as slowdown monitoring circuit ", " ballast compatible circuit ", " filament artificial circuit ", " auxiliary power module ", including this Utility model any the relevant technologies point as described in the examples and its modification and any combination of them.

For example, feature " fluorescent tube has structure-reinforced end regions " may include that " fluorescent tube includes body region and multiple ends Petiolarea has a transition region between the end region and the body region, transition region connects the body region and the end region, The both ends of the transition region are all arc in the axial sectional view along fluorescent tube, and the end region is respectively sheathed on a lamp cap, until The outer diameter of a few end region is less than the outer diameter of the body region, and the outer diameter phase of the outer diameter of lamp cap and the body region Deng."

For example, feature " LED lamp panel uses flexible circuit board " may include " flexible circuit board and the power supply Between output end by conducting wire routing connect or the flexible circuit board and the output end of the power supply between weld.In addition, The flexible circuit board includes the storehouse of a dielectric layer and a line layer；Flexible circuit board can be in surface coating printing ink material The circuit protecting layer of material, and the function by increasing width circumferentially to realize reflectance coating."

For example, feature " fluorescent tube inner peripheral surface is coated with diffusion barrier " may include that " constituent of the diffusion coating includes carbonic acid In calcium, calcium halophosphate activated by antimony andmanganese and aluminium oxide or any combination thereof and thickener and ceramics activated carbon.In addition, the diffusion barrier is also It for diffusion barrier sheet and can cover on outside LED light source."

For example, feature " tube inner wall is coated with reflectance coating " may include that " light source may be disposed on reflectance coating, be set to institute It states in reflectance coating opening or in the side of the reflectance coating."

For example, feature " lamp cap includes heat-conducting part " may include " lamp cap may include insulation tube, heat-conducting part inner peripheral surface with Accommodating space is formed between the outer peripheral surface of fluorescent tube, wherein hot melt adhesive can fill a part or the full accommodating of filling of accommodating space Space." feature " lamp cap includes magnetic conductive metal part " may include that " magnetic conductive metal part can be round or non-circular, and can lead to Setting opening or impression/relief are crossed to reduce the contact area of the outer peripheral surface of magnetic conductive metal part and the inner peripheral surface of insulation tube.In addition, In insulation tube can also by setting support portion, protrusion come reinforce the support to magnetic conductive metal part and reduce magnetic conductive metal part with The contact area of insulation tube."

For example, feature " LED light source has bracket " may include that " light source includes having reeded bracket, and be set to LED chip in the groove；The bracket has the first side wall arranged along the fluorescent tube length direction, and along the lamp The second sidewall of pipe width direction arrangement, the first side wall are lower than the second sidewall."

For example, feature " utilizing circuit board member connection LED lamp panel and power supply " may include that " sub-assembly of length circuit board has There are a long circuit board and a short circuit board, long circuit board and short circuit board are bonded fix by bonding way each other, short circuit board Positioned at long circuit board adjacent peripheral edges.There is power supply mould group on short circuit board, be integrally formed power supply, short circuit board is than long circuit board Firmly."

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

When DC signal is as external drive signal, the power supply mould group of LED straight lamp can be omitted rectification circuit.

In the rectification circuit design of power supply mould group, it can be with single rectification circuit or double rectification circuits.Double rectifications The pin of the first rectification circuit and the second rectification circuit respectively with configuration in the both ends lamp cap of LED straight lamp in circuit couples. Single rectification circuit is applicable to the driving framework of single ended power supply, and double rectification circuits are suitable for single ended power supply and Double-End Source Drive framework.And when being configured with an at least rectification circuit, it can be adapted for low-frequency ac signal, high-frequency ac signal or straight Flow the drive environment of signal.

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

In the pin design of power supply mould group, single-ended double pins (totally two pins, other end non-connection pin), both-end can be The framework of each list pin (totally two pins), each double pins (totally four pins) of both-end.It singly connects single-ended double pins and both-end are each Under the framework of foot, it is applicable to the rectification circuit design of single rectification circuit.Under the framework of each double pins of both-end, it is applicable to The rectification circuit of double rectification circuits designs, and receives external drive using each any pin of both-end or any single-ended double pins Signal.

In the filter circuit design of power supply mould group, Single Capacitance or π type filter circuit can have, after filtering out rectification Radio-frequency component in signal, and the DC signal of low ripple is provided as signal after filtering.Filter circuit also may include LC filtering Circuit, high impedance is presented to specific frequency, to meet UL certification to the size of current specification of specific frequency.Furthermore according to one The filter circuit of a little embodiments more may include the filter unit being coupled between pin and rectification circuit, to reduce electromagnetic interference.

In the LED drive module design of power supply mould group, only comprising LED module or LED module and driving can be included Circuit.Can also be in parallel with LED drive module by voltage regulator circuit, to ensure the unlikely generation over-voltage of the voltage in LED drive module. Voltage regulator circuit can be voltage clamping circuit, such as: Zener diode, bi-directional voltage stabilizing pipe etc..When rectification circuit includes condenser network, A capacitor can be connected two-by-two between in a pin of each lamp cap of two lamp caps and a pin of another lamp cap, with electric with capacitor Road carries out partial pressure effect and as voltage regulator circuit.

In the design for only including LED drive module, when high-frequency ac signal is as external drive signal, at least one is whole Current circuit includes condenser network (that is, including more than one capacitor), and the full wave bridge type in condenser network and rectification circuit Or half-wave rectifying circuit series connection, so that condenser network is equivalent to impedance under high-frequency ac signal as current regulating circuit and to adjust Save the electric current of LED module.Whereby, when the high-frequency ac signal of the provided different voltages of different electric ballasts, LED module Electric current can be adjusted within the scope of predetermined current and unlikely there is a situation where overcurrents.Energy electricity is released furthermore it is possible to additionally increase Road, it is in parallel with LED module, after external drive signal stops providing, releases energy circuit auxiliary and carry out filter circuit to release energy, with Reducing resonance caused by filter circuit or other circuits influences to prevent LED module from flashing.

In some embodiments, if including LED module and driving circuit in LED drive module, driving circuit can To be voltage up converting circuit, decompression converting circuit or lifting voltage conversion circuit.Driving circuit is to stablize the electric current of LED module In setting electric current value, setting electric current value can also be modulated according to external drive signal.For example, setting electric current value can be with outside The level of driving signal increases and increases and reduce as the level of external drive signal reduces.Furthermore it is possible to additionally increase Add mode selector switch between LED module and driving circuit, so that electric current is directly inputted LED module by filter circuit or is passed through and drive LED module is inputted after dynamic circuit.

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

In the ballast circuit for detecting design of power supply mould group, ballast circuit for detecting is above connected with LED drive module with equivalent Capacitor it is in parallel, and determine that external drive signal flows through capacitor or flows through ballast detecting electricity according to the frequency of external drive signal Road (i.e. bypass capacitor).Above-mentioned capacitor can be the condenser network of rectification circuit.

Power supply mould group filament artificial circuit design in, can be single shunt capacitance and resistance group or two it is concatenated simultaneously Join capacitor and resistance group or negative temperature parameter circuit.Filament artificial circuit is suitable for program program actuated type electric ballast, can The problem of filament exception is judged to avoid program program actuated type electric ballast, is improved to program program actuated type electronic ballast The compatibility of device.And filament artificial circuit have little influence on instantaneous starting type (Instant Start) electric ballast, quickly The compatibility of other electric ballasts such as actuated type (Rapid Start) electric ballast.

Power supply mould group ballast compatible circuit design in, ballast compatible circuit can connect with rectification circuit or with filtering Circuit and LED drive module are in parallel.With the concatenated design of rectification circuit, the original state of ballast compatible circuit is cut-off, And it is connected after setting delay time.In the design in parallel with filter circuit and LED drive module, ballast compatible circuit Original state is conducting, and is ended after setting delay time.Ballast compatible circuit can make instantaneous starting in initial start stage Type electric ballast can smoothly start, and improve the compatibility to instantaneous starting type electric ballast.And ballast compatible circuit Have little influence on the compatibility of other electric ballasts such as program actuated type electric ballast, quick-starting direct electric ballast.

In the auxiliary power module design of power supply mould group, 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 drive module design of driving circuit.

In the LED module design of power supply mould group, LED module may include the multi-string LED being connected in parallel to each other (that is, single LED The LED group of chip or multiple and different color LED chips composition) it goes here and there, the LED in each LED string can be connected to each other and form net Shape connection.

That is, the features described above of the utility model can be made to arbitrary permutation and combination, and for LED straight lamp It improves, and only describes above-described embodiment in an illustrative manner.The utility model is without being limited thereto, and without departing from essence of the invention Many modifications are possible in the case where range refreshing and defined in the appended claims.

Claims

1. a kind of LED light, one end or both ends have pin, and include the rectification circuit being mutually coupled, filter circuit, with And LED drive module, which is characterized in that

The LED light also has a filament artificial circuit, and what the filament artificial circuit coupled described LED light one end at least one connects Foot；

The LED light also has fluorescent tube and lamp plate, and the lamp plate is arranged in the fluorescent tube；

The LED drive module includes for luminous LED unit, and the LED unit includes LED and is arranged at the lamp plate On.

2. LED light according to claim 1, which is characterized in that

The filament artificial circuit includes capacitor (1663) and resistance (1665) in parallel；

The both ends of the capacitor (1663) and resistance (1665) are respectively coupled to two pins of described LED light the same end.

3. LED light according to claim 1, which is characterized in that the filament artificial circuit is coupled to the LED driving mould Between block (530) and a pin (501/502/503/504) of described LED light one end, the filament artificial circuit includes simultaneously Join a resistance (1665) and a capacitor (1663) of connection, and one of the capacitor (1663) and resistance (1665) is in parallel public End is coupled with the LED drive module (530).

4. LED light according to claim 3, which is characterized in that the rectification circuit is coupled to the filament artificial circuit And between the LED drive module (530).

5. LED light according to claim 1, which is characterized in that

The capacitor (1663) and resistance (1665) are coupled to the one of the LED drive module (530) and described LED light one end Between pin (501)；

The LED light also includes another filament artificial circuit, and another filament artificial circuit includes another capacitor in parallel (1663) and another resistance (1665)；

Another capacitor (1663) and another resistance (1665) are coupled to the LED drive module (530) and the LED light Between another pin (502) at the end.

6. LED light according to claim 1, which is characterized in that

The filament artificial circuit includes first capacitor (1763), the second capacitor (1764), first resistor (1765) and second Resistance (1766), in which:

First capacitor (1763) and the second capacitor (1764) are series between two pins of described LED light the same end；

First resistor (1765) and second resistance (1766) are also series between described two pins；

The tie point of the first capacitor (1763) and the second capacitor (1764), with first resistor (1765) and second resistance (1766) tie point coupling.

7. LED light according to claim 1, which is characterized in that

The filament artificial circuit includes negative temperature coefficient resister, is coupled between two pins of described LED light the same end.

8. LED light according to claim 7, which is characterized in that the resistance value of the filament artificial circuit is 10 at 25 DEG C Ohm or more；When the LED light normally starts, the resistance value of filament artificial circuit is down to 2~10 ohm.

9. LED light according to claim 1, which is characterized in that the LED light also has a capacitor (925)；The capacitor It is coupled between the filament artificial circuit and the rectification circuit, and is connected in parallel with the rectification circuit.

10. LED light according to claim 9, which is characterized in that the rectification circuit includes first diode (611), the Two diodes (612), third diode (613) and the 4th diode (614), wherein second diode (612) is negative The anode of pole and the 4th diode (614) couples two pins of a described LED light the same end wherein pin (501), The cathode of the first diode (611) and the anode of the third diode (613) couple the another of described two pins Pin (502), the first diode (611) is connected with the anode of the second diode (612), and the third diode (613) it is connected with the cathode of the 4th diode (614).

11. LED light according to claim 9, which is characterized in that it is same that the both ends of the capacitor are respectively coupled to the LED light Two pins of one end.

12. LED light according to claim 1, which is characterized in that the LED light also has a ballast circuit for detecting (1590,1690)；The ballast circuit for detecting is coupled between the filament artificial circuit and the rectification circuit, and with it is described Rectification circuit is connected in parallel；And the ballast circuit for detecting be used for detect by described LED light the same end a pin (501) or separately The input signal that one pin (502) is inputted, to judge whether the ballast circuit for detecting is connected one as caused by the signal Electric current.

13. LED light according to claim 12, which is characterized in that the ballast circuit for detecting includes an inductance (1694) Or one switching switch (1799).

14. LED light according to claim 12, which is characterized in that the ballast circuit for detecting includes one be connected in series Inductance (1694) and a bidirectional triode thyristor (1699)；And the ballast circuit for detecting according to the size of the input signal with certainly It is fixed whether to trigger the bidirectional triode thyristor (1699) conducting.

15. LED light according to claim 12, which is characterized in that the rectification circuit includes the first rectification circuit (510) With the second rectification circuit (540/810), the ballast circuit for detecting is coupled to first rectification circuit (510) and the second rectification Between circuit (540/810), and one end of the ballast circuit for detecting is connect with first rectification circuit (510), the town The other end of stream circuit for detecting is connect with second rectification circuit (540/810).

16. LED light according to claim 1, which is characterized in that include driving circuit in the LED drive module (1530) and LED module (630), the driving circuit are used to carry out electrical power conversion, to drive the LED module to shine.

17. LED light according to claim 16, which is characterized in that the driving circuit includes controller (1531) and turns Change circuit (1532)；The conversion circuit couples the output end of the filter circuit with signal after accepting filter, and according to described Signal after filtering is converted into driving signal and exported, to drive LED module by the control of controller.

18. LED light according to claim 16, which is characterized in that the rectification circuit is for receiving by the LED light The input signal that one or both ends are inputted, and the driving circuit be used for receive it is rectified after the input signal and Electrical power conversion is carried out to the input signal after rectified.

19. LED light according to claim 18, which is characterized in that the filter circuit is for receiving the rectification circuit Output so that generate it is described it is rectified after input signal.

20. LED light according to claim 18, which is characterized in that the driving circuit includes controller (2631) and turns Change circuit (2632)；The conversion circuit (2632) includes switching circuit (2635) and accumulator (2638), the energy storage Circuit (2638) couples the LED module (630)；The controller (2631) couples the output end of the driving circuit, and uses In receiving current sense signal (S539), to determine the conducting of switching circuit (2635) and deadline and then control the drive The driving signal of dynamic circuit output；Wherein, the current sense signal (S539) represents the electric current of the accumulator (2638) Size, or represent the size for flowing through the electric current of the LED module.

21. LED light according to claim 20, which is characterized in that the accumulator (2638) includes inductance, and described Driving circuit includes inductance, and the inductance of the driving circuit is to mutual with the inductance in the accumulator (2638) Sense is with detecting current.

22. LED light according to claim 1, which is characterized in that the filament artificial circuit is coupled to the LED driving Between module (530) and an at least pin of described LED light one end, and the filament artificial circuit includes a resistance (1665) An or capacitor (1663).

23. LED light according to claim 1, which is characterized in that the LED light also has endpoint conversion circuit (541), The endpoint conversion circuit is coupled between the LED drive module (530) and two pins of described LED light the same end.

24. LED light according to claim 23, which is characterized in that the endpoint conversion circuit includes one be connected in parallel Capacitor and a resistance.

25. the LED light according to claim 23 or 24, which is characterized in that the rectification circuit is converted comprising the endpoint Circuit, or be coupled between the endpoint conversion circuit and the LED drive module (530).

26. LED light according to claim 1, which is characterized in that the filament artificial circuit constitutes endpoint conversion circuit (541), the filament artificial circuit includes two resistance, is series between two pins of described LED light the same end, and described Tie point between two resistance is coupled to the LED drive module (530).

27. a kind of LED light, one end or both ends have pin, and include the rectification circuit being mutually coupled, filter circuit, And LED module (630), which is characterized in that

The LED module includes for luminous LED unit, and the LED unit includes LED and is arranged on the lamp plate；

The LED light also has capacitor and another capacitor, and the capacitor is coupled to an at least pin of described LED light one end (501/502), another capacitor is coupled to an at least pin (503/504) for the LED light other end；

The rectification circuit be coupled to the capacitor (1663/642/743/843/1763/825) and the LED module (630) it Between, it is also coupled between another capacitor and the LED module (630), the rectification circuit is used for by the LED light The signal that one or both ends are inputted is rectified；

The filter circuit is coupled between the rectification circuit and the LED module (630), and for from described whole The signal of current circuit is filtered.

28. LED light according to claim 27, which is characterized in that the capacitor (1663/1763) and another capacitor (1663/1763) system is as filament artificial circuit, and the filament artificial circuit is coupled to the LED module (630) and described Between one pin (501/502/503/504) of LED light one end.

29. LED light according to claim 28, which is characterized in that the filament artificial circuit includes the electricity in parallel Hold (1663/1763) and resistance (1665/1765).

30. LED light according to claim 29, which is characterized in that the capacitor (1663/1763) and the resistance (1665/1765) both ends are respectively coupled to two pins of described LED light the same end.

31. LED light according to claim 27, which is characterized in that the capacitor (642/743/843) and another capacitor (642/743/843) system as endpoint conversion circuit (541) or has current-limiting function.

32. LED light according to claim 27, which is characterized in that the LED light also has impedor (828), described Impedor (828) and the capacitor (825) or another capacitor (825) are parallel to a pin (501/ of described LED light one end 502/503/504) and between the rectification circuit (510/540).

33. a kind of LED light, one end or both ends have pin, and include the rectification circuit being mutually coupled, filter circuit, And LED module (630), which is characterized in that

The LED module (630) includes for luminous LED unit, and the LED unit includes LED and is arranged at the lamp On plate；

The LED light also has a current-limiting circuit, the current-limiting circuit be coupled to the pin (501/502) of described LED light one end and For limiting the electric current for flowing through the LED light；

The rectification circuit is coupled to the current-limiting circuit and the news for being inputted to the one or both ends by the LED light It number is rectified；

The filter circuit is coupled between the rectification circuit and the LED module (630), and for from described whole The signal of current circuit is filtered；

The LED light also has the first filament artificial circuit and the second filament artificial circuit, the first filament artificial circuit coupling It is connected to the pin (501/502) of described LED light one end, the second filament artificial circuit is coupled to the LED light other end Pin (503/504).

34. LED light according to claim 33, which is characterized in that the rectification circuit includes the first rectification circuit (510) And second rectification circuit (540), first rectification circuit (510) include or are coupled to the current-limiting circuit, described second is whole Current circuit (540) is coupled between the LED module (630) and the second filament artificial circuit.

35. LED light according to claim 33, which is characterized in that the first filament artificial circuit includes impedor It is coupled between two pins (501,502) of described LED light one end；The second filament artificial circuit includes impedor coupling It is connected between two pins (503,504) of the LED light other end.

36. a kind of LED light, one end or both ends have pin, and include the first rectification circuit (510) being mutually coupled, Second rectification circuit (540), filter circuit and LED module (630), which is characterized in that

The LED module (630) includes for luminous LED unit (632/732), and the LED unit (632/732) includes It LED and is arranged on the lamp plate；

First rectification circuit (510) is coupled to the pin of described LED light one end and includes diode, second rectified current Road (540) is coupled to the pin (503) of the LED light other end and includes two diodes (711,712；811,812), described Between two diodes of the second rectification circuit (540) tie point connection be belonging respectively to described two diodes anode with it is negative Pole；

First rectification circuit (510) and second rectification circuit (540) are used for one end or two by the LED light Inputted signal is held to be rectified；

The LED light also has drop EMI element, and the pin (503) and described second for being coupled to the LED light other end rectify Between tie point between two diodes of circuit (540).

37. LED light according to claim 36, which is characterized in that the drop EMI element includes capacitor (1663/1763/ It 1764) and is as filament artificial circuit.

38. LED light according to claim 36, which is characterized in that the drop EMI element (642/743/744/843/ 844/842) belong to endpoint conversion circuit (541) and have the function of limiting electric current.

39. LED light according to claim 36, which is characterized in that the filter circuit include capacitor (625) and with it is described LED unit (632/732) is in parallel, and be coupled to two diode one of them (811) of second rectification circuit (540) Between anode and the cathode of another one (812).

40. LED light according to claim 36, which is characterized in that first rectification circuit (510) includes the one or two pole (611), the second diode (612), third diode (613) and the 4th diode (614) are managed, wherein the second two pole Two pins that the anode of the cathode and the 4th diode (614) of managing (612) couples described LED light one end wherein one connect Foot (501), the cathode of the first diode (611) and the anode of the third diode (613) couple two, the end Another pin (502) of pin, the first diode (611) are connected with the anode of the second diode (612), and described Three diodes (613) are connected with the cathode of the 4th diode (614).