CN204168554U - A kind of LED circuit - Google Patents
A kind of LED circuit Download PDFInfo
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- CN204168554U CN204168554U CN201420632903.7U CN201420632903U CN204168554U CN 204168554 U CN204168554 U CN 204168554U CN 201420632903 U CN201420632903 U CN 201420632903U CN 204168554 U CN204168554 U CN 204168554U
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Abstract
The utility model relates to a kind of LED circuit.The utility model comprises surge protection circuit, LED drive power and LED light source circuit, the output of described surge circuit is connected with the input of LED drive power, the output of LED drive power is connected with the input of LED light source circuit, described LED light source circuit comprises several LED modules, each described LED modules in parallel has electric capacity module, described LED module comprises aluminium base and LED light source, wherein aluminium base comprises the conductive copper layers of foil on surface, insulating barrier and heat-dissipating aluminium plate, conductive copper layers of foil comprises multiple Copper Foil block, electric capacity is formed between each Copper Foil block and heat-dissipating aluminium plate, heat-dissipating aluminium plate ground connection.The utility model passes through to LED module shunt capacitance module, and LED light source can be protected to impact from surging signal, and surging signal, when surge occurs, can bypass by electric capacity module.
Description
Technical field
The utility model relates to the protective circuit technical field of LED, specifically, relates to a kind of LED circuit.
Background technology
LED has the feature of low-power consumption, long service life, is therefore widely used in various light fixture, as projecting lamp, street lamp etc.; When illumination needs relatively high power, need the light fixture designing multiple LED module composition, this light fixture in use, needs to design good heat dissipation channel and secondary lens installation position, to avoid the excessive LED lamp that causes of caloric value impaired and improve light projected position precision etc.
But these assemblies are when design and installation, need higher quality of fit, take larger area simultaneously, secondly, when using multiple LED module, generally LED module being fixed on aluminium base, to facilitate cabling and heat radiation; And the use of aluminium base adds the thermal resistance between LED and heat abstractor, therefore the lower aluminium base of thermal resistance is installed, adds cost.Simultaneously when giving each LED module mounted lens, needing to install one by one, also making operation complicated, reduce production efficiency, secondly, when using LED lamp, needs environmentally, need the adjustment again of the carrying out of LED lamp, as dispersed or optically focused; But still there is no this device at present.
Utility model content
thisthe object of utility model is to solve the deficiencies in the prior art, provides a kind of LED circuit.This LED circuit can avoid surge to the damage of LED light source.
The utility model is the technical scheme that the above-mentioned deficiency of solution adopts:
A kind of LED circuit, comprise surge protection circuit, LED drive power and LED light source circuit, the output of described surge circuit is connected with the input of LED drive power, the output of LED drive power is connected with the input of LED light source circuit, described LED light source circuit comprises several LED modules, each described LED modules in parallel has electric capacity module, described LED module comprises aluminium base and LED light source, wherein aluminium base comprises the conductive copper layers of foil on surface, insulating barrier and heat-dissipating aluminium plate, conductive copper layers of foil comprises multiple Copper Foil block, electric capacity is formed between each Copper Foil block and heat-dissipating aluminium plate, heat-dissipating aluminium plate ground connection.
Further, described LED drive power comprises power input, EMI circuit, rectification circuit, control circuit, transformer and power output end, power input is connected with EMI circuit, rectification circuit successively, the output of rectification circuit is connected with the primary coil of transformer and forms loop, be provided with switching tube between primary coil and rectification circuit, the control end of switching tube is connected with control circuit; The two ends of the secondary coil of transformer are connected with corresponding power output end respectively, are provided with electric capacity C1 between the positive terminal of power output end and negative pole end, and the negative pole end of power output end is connected with the cathode output end of rectification circuit by electric capacity C2.
Further, described LED light source circuit comprises the LED module of the LED module of series connection or the LED module of parallel connection or single LED module and series-parallel connection.
Further, described electric capacity module comprises at least one electric capacity.
Further, TVS pipe is provided with between two electrode tips of the input of LED light source circuit.
Further, the secondary coil of transformer is in series with diode D1.
The beneficial effects of the utility model are: by giving LED module shunt capacitance module; LED light source can be protected to impact from surging signal; when surge occurs; surge voltage and electric current bypass from LED module; the both end voltage of LED module, in safe range, also will flow through the Current Control of LED module in safe range simultaneously.
Accompanying drawing explanation
Fig. 1 is the circuit diagram of utility model.
Fig. 2 is the structural representation of the LED module of utility model.
Fig. 3 is the schematic equivalent circuit of the LED module of utility model.
Description of reference numerals:
1---surge protection circuit 2---EMI circuit 3---rectification circuit
4---LED drive power 5---LED module 6---electric capacity modules
7---LED light source circuit 8---control circuit 511---heat-dissipating aluminium plates
512---insulating barrier 513---Copper Foil block 51---aluminium bases
52---LED light source.
Embodiment:
Below in conjunction with the drawings and specific embodiments to utility model further instruction.
Embodiment: see Fig. 1 to Fig. 3.
A kind of LED circuit, comprise surge protection circuit 1, LED drive power 4 and LED light source circuit 7, the output of described surge circuit is connected with the input of LED drive power 4, the output of LED drive power 4 is connected with the input of LED light source circuit 7, described LED light source circuit 7 comprises several LED modules 5, each described LED module 5 is parallel with electric capacity module 6, described LED module 5 comprises aluminium base 51 and LED light source 52, wherein aluminium base 51 comprises the conductive copper layers of foil on surface, insulating barrier 512 and heat-dissipating aluminium plate 511, conductive copper layers of foil comprises multiple Copper Foil block 513, electric capacity is formed between each Copper Foil block 513 and heat-dissipating aluminium plate 511, heat-dissipating aluminium plate 511 ground connection.
Here surge protection circuit, EMI circuit, rectification circuit, control circuit are all available circuits.
When surge impact occurs, because surge protection circuit 1 has surge voltage and electric current to impact the LED light source 52 on LED drive power 4 internal component and LED module 5 before responding with after response.If this surge impact is difference mode signal; the electric capacity module 6 of the utility model inside circuit can provide the release way of surge voltage and electric current; rapidly the surge voltage of the overwhelming majority and electric current are bypassed from LED module 5; then LED drive power 4 is flowed back to; form release path; make the voltage control at LED light source 52 two ends in the voltage range of safety, also will flow through the Current Control of LED light source 52 within the scope of safety simultaneously, to reach the object of protection LED light source 52.Fig. 3 is the equivalent electric circuit of LED module 5, and in Fig. 3, each block Copper Foil block 513 forms electric capacity with heat-dissipating aluminium plate 511, uses C respectively
s1, C
s2c
snrepresent, n is natural number; If this surge impact is common-mode signal, electric capacity module 6 bypass absorption that it is connected in parallel on LED light source 52 equally falls the overwhelming majority, little part common mode surge current is only had to flow through LED light source 52, and then by the Copper Foil block 513 on aluminium base 51 and the distributed capacitance C between heat-dissipating aluminium plate 511
s1, C
s2c
snflow to ground wire PE, form the release channel of common mode surge voltage and electric current, n>1, n are natural number.Therefore, the same bypass absorption common mode surge impact of electric capacity module 6, plays the object of protection LED light source 52 equally.
Further, described LED drive power 4 comprises power input, EMI circuit 2, rectification circuit 3, control circuit 8, transformer and power output end, power input is connected with EMI circuit 2, rectification circuit 3 successively, the output of rectification circuit 3 is connected with the primary coil of transformer T and forms loop, be provided with switching tube Q1 between primary coil T and rectification circuit 3, the control end of switching tube Q1 is connected with control circuit 8; The two ends of the secondary coil of transformer T are connected with corresponding power output end respectively, are provided with electric capacity C1 between the positive terminal of power output end and negative pole end, and the negative pole end of power output end is connected with the cathode output end of rectification circuit 3 by electric capacity C2.
When surge impact is difference mode signal, is bypassed although electric capacity module 6 can absorb rapidly, need to be flow back into LED drive power 4, be therefore provided with electric capacity C1, surge voltage, electric current can be discharged by LED drive power 4.What switching tube Q1 adopted here is field-effect transistor, can certainly adopt triode etc.
Further, described LED light source circuit 7 comprises the LED module 5 of the LED module 5 of series connection or the LED module 5 of parallel connection or single LED module 5 and series-parallel connection.
LED light source circuit 7 can be arranged according to actual needs, as the LED module 5 of the LED module 5 of the LED module 5 of cascaded structure, parallel-connection structure, single led module 5 or series-parallel connection.LED module 5 can be arranged to the LED light source 52 of the LED light source 52 or parallel connection of connecting and single LEDs light source 52.
Further, described electric capacity module 6 comprises at least one electric capacity.
Multiple electric capacity in electric capacity module 6 can be connected in series, be connected in parallel and series-parallel connection, form a large electric capacity module 6.
Further, TVS pipe is provided with between two electrode tips of the input of LED light source circuit 7.
TVS pipe is transient voltage suppressor, arranges TVS pipe and can play and necessarily prevent surge effect.When there being surging signal, TVS pipe short circuit, protection LED module.
Further, the secondary coil of transformer T is in series with diode D1.
Diode D1 prevents secondary coil reversal connection.
Below be only the preferred embodiment of the application, equivalent technical solutions on this basis still falls into application protection range.
Claims (9)
1. a LED circuit, comprise surge protection circuit, LED drive power and LED light source circuit, the output of described surge circuit is connected with the input of LED drive power, the output of LED drive power is connected with the input of LED light source circuit, described LED light source circuit comprises several LED modules, it is characterized in that: each described LED modules in parallel has electric capacity module, described LED module comprises aluminium base and LED light source, wherein aluminium base comprises the conductive copper layers of foil on surface, insulating barrier and heat-dissipating aluminium plate, conductive copper layers of foil comprises multiple Copper Foil block, electric capacity is formed between each Copper Foil block and heat-dissipating aluminium plate, heat-dissipating aluminium plate ground connection.
2. a kind of LED circuit according to claim 1, it is characterized in that: described LED drive power comprises power input, EMI circuit, rectification circuit, control circuit, transformer and power output end, power input is connected with EMI circuit, rectification circuit successively, the output of rectification circuit is connected with the primary coil of transformer and forms loop, be provided with switching tube between primary coil and rectification circuit, the control end of switching tube is connected with control circuit; The two ends of the secondary coil of transformer are connected with corresponding power output end respectively, are provided with electric capacity C1 between the positive terminal of power output end and negative pole end, and the negative pole end of power output end is connected with the cathode output end of rectification circuit by electric capacity C2.
3. a kind of LED circuit according to claim 1 and 2, is characterized in that: described LED light source circuit comprises the LED module of series connection.
4. a kind of LED circuit according to claim 1 and 2, is characterized in that: described LED light source circuit comprises LED module in parallel.
5. a kind of LED circuit according to claim 1 and 2, is characterized in that: described LED light source circuit comprises single LED module.
6. a kind of LED circuit according to claim 1 and 2, is characterized in that: described LED light source circuit comprises the LED module of series-parallel connection.
7. a kind of LED circuit according to claim 1, is characterized in that: described electric capacity module comprises at least one electric capacity.
8. a kind of LED circuit according to claim 1, is characterized in that: be provided with TVS pipe between two electrode tips of the input of LED light source circuit.
9. a kind of LED circuit according to claim 1, is characterized in that: the secondary coil of transformer is in series with diode D1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420632903.7U CN204168554U (en) | 2014-10-29 | 2014-10-29 | A kind of LED circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420632903.7U CN204168554U (en) | 2014-10-29 | 2014-10-29 | A kind of LED circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204168554U true CN204168554U (en) | 2015-02-18 |
Family
ID=52542198
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420632903.7U Active CN204168554U (en) | 2014-10-29 | 2014-10-29 | A kind of LED circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204168554U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104302063A (en) * | 2014-10-29 | 2015-01-21 | 东莞勤上光电股份有限公司 | LED circuit |
-
2014
- 2014-10-29 CN CN201420632903.7U patent/CN204168554U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104302063A (en) * | 2014-10-29 | 2015-01-21 | 东莞勤上光电股份有限公司 | LED circuit |
| WO2016065744A1 (en) * | 2014-10-29 | 2016-05-06 | 东莞勤上光电股份有限公司 | Led circuit |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20171109 Address after: 523565 Guangdong city of Dongguan province Changping Zhen Heng Jiang Jiang Xia Heng Industrial Road, set up a file Patentee after: KINGSUN OPTOELECTRONIC CO., LTD. Address before: 523565 Guangdong province Dongguan city Changping town Hengjiang Dongguan KingSun Au Optronics Co set up a file Patentee before: Dongguan Qinshang Photoelectric Co., Ltd. |
|
| TR01 | Transfer of patent right |