CN104302063A - LED circuit - Google Patents
LED circuit Download PDFInfo
- Publication number
- CN104302063A CN104302063A CN201410590480.1A CN201410590480A CN104302063A CN 104302063 A CN104302063 A CN 104302063A CN 201410590480 A CN201410590480 A CN 201410590480A CN 104302063 A CN104302063 A CN 104302063A
- Authority
- CN
- China
- Prior art keywords
- led
- circuit
- light source
- led light
- module
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B47/00—Circuit arrangements for operating light sources in general, i.e. where the type of light source is not relevant
- H05B47/10—Controlling the light source
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V23/00—Arrangement of electric circuit elements in or on lighting devices
- F21V23/02—Arrangement of electric circuit elements in or on lighting devices the elements being transformers, impedances or power supply units, e.g. a transformer with a rectifier
Abstract
The invention relates to an LED circuit. The LED circuit comprises a surge protection circuit, an LED driving power source and an LED light source circuit, the output end of the surge protection circuit is connected with the input end of the LED driving power source, and the output end of the LED driving power source is connected with the input end of the LED light source circuit. The LED light source circuit comprises a plurality of LED modules, each LED module is connected with a capacitor module in parallel and comprises an aluminum substrate and an LED light source, each aluminum substrate comprises an electric conduction copper foil layer on the surface, an insulating layer and a heat dissipation aluminum plate, each electric conduction copper foil layer comprises a plurality of copper foil blocks, one capacitor is formed between each copper foil block and the corresponding heat dissipation aluminum plate, and the heat dissipation aluminum plates are grounded. As the LED modules are connected with the capacitor modules in parallel, the LED light sources can be protected from impact of surge signals, and the capacitor modules can eliminate the surge signals in a bypass mode when a surge occurs.
Description
Technical field
The present invention relates to the protective circuit technical field of LED, specifically, relate to a kind of LED circuit.
Background technology
Because LED has the great advantage such as energy-saving and environmental protection and life-span length, under market and the dual interests of regulation stimulate, global LED industry is flourish, and scale is in the gesture of growth fast, and LED product replaces traditional lighting light fixture and points the day and await for it.But LED lamp also presents problems in actual applications, wherein the phenomenon of surge voltage and rush of current damage LED light source is of common occurrence.
In order to protect LED not by surge voltage and circuit damage, a lot of company have developed surge protection circuit, if publication No. is the patent of invention of CN103997027A, it devises a kind of Anti-surging power-supplying circuit, this control circuit comprises energy storage and drives module, power switch module, Anti-surging power module and electric energy release module, Anti-surging module of powering realizes external stable power-supplying by a switching circuit, but this design have ignored the reaction time of electronic devices and components, when circuit runs into this moment extra-high pressure of thunder and lightning, surge protection circuit make corresponding before, there is the high voltage of part, high electric current impacts LED lamp, when circuit needs a few the microsecond even time of hundreds of microsecond toward contact surge voltage and current-clamp in predetermined voltage range, the residual voltage that a few hectovolt even goes up kilovolt can be there is during this period of time impact the LED light source on LED drive power internal component and LED module, LED light source is caused to be subject to, in current practical application, a lot of LED light sources is all damaged by thunder and lightning.
Summary of the invention
The object of invention 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.
Inventing the technical scheme adopted for solving above-mentioned deficiency is:
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.
Beneficial effect of the present invention is: 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 invention.
Fig. 2 is the structural representation of the LED module of invention.
Fig. 3 is the schematic equivalent circuit of the LED module of invention.
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 invention 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 inside circuit of the present invention 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.
The present invention has done to explain, and those of ordinary skill in the art should be appreciated that and can modify to technical scheme of the present invention or equivalent replacement, and does not depart from essence and the scope of technical solution of the present invention.
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 (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410590480.1A CN104302063B (en) | 2014-10-29 | 2014-10-29 | A kind of LED circuit |
| PCT/CN2015/070712 WO2016065744A1 (en) | 2014-10-29 | 2015-01-14 | Led circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410590480.1A CN104302063B (en) | 2014-10-29 | 2014-10-29 | A kind of LED circuit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104302063A true CN104302063A (en) | 2015-01-21 |
| CN104302063B CN104302063B (en) | 2017-08-25 |
Family
ID=52321564
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410590480.1A Active CN104302063B (en) | 2014-10-29 | 2014-10-29 | A kind of LED circuit |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN104302063B (en) |
| WO (1) | WO2016065744A1 (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105898913A (en) * | 2015-02-12 | 2016-08-24 | 松下知识产权经营株式会社 | Light source unit and illuminating device |
| CN107248815A (en) * | 2017-06-07 | 2017-10-13 | 浙江大学 | Low EMI center of asymmetries tap rectification circuit |
| CN107454707A (en) * | 2017-05-15 | 2017-12-08 | 上海路傲电子科技有限公司 | A kind of LED illumination linear constant current drive circuit of absorbable metal substrate leakage stream |
| CN111758301A (en) * | 2018-02-23 | 2020-10-09 | 昕诺飞控股有限公司 | Lighting unit, lighting system and method of connecting lighting units |
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| JPH05308158A (en) * | 1992-04-30 | 1993-11-19 | Mitsubishi Electric Corp | Transmitting circuit |
| CN202165873U (en) * | 2011-07-08 | 2012-03-14 | 深圳市盛世创业电子有限公司 | No-drive LED lamp |
| CN102595718A (en) * | 2012-01-31 | 2012-07-18 | 江苏好的节能光电科技有限公司 | Circuit for enhancing use reliability of discrete LED light source |
| CN102966871A (en) * | 2012-08-02 | 2013-03-13 | 福建新文行灯饰有限公司 | Heat dissipation-type LED lamp |
| CN103542386A (en) * | 2013-11-01 | 2014-01-29 | 深圳市九洲光电科技有限公司 | Light-emitting diode (LED) substrate and high voltage resistant LED lamp |
| CN204168554U (en) * | 2014-10-29 | 2015-02-18 | 东莞勤上光电股份有限公司 | A kind of LED circuit |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| JP2009195033A (en) * | 2008-02-14 | 2009-08-27 | Toshiba Lighting & Technology Corp | Power supply device and lighting fitting |
| CN201221745Y (en) * | 2008-06-12 | 2009-04-15 | 茅建生 | Constant current type soft driven LED luminous module group |
| CN201967222U (en) * | 2011-04-28 | 2011-09-07 | 李旭亮 | LED (light-emitting diode) lamp and LED switching control device |
| CN102762007A (en) * | 2011-04-28 | 2012-10-31 | 东莞勤上光电股份有限公司 | LED lamp and LED switch control device |
| CN203586129U (en) * | 2013-11-01 | 2014-05-07 | 深圳市九洲光电科技有限公司 | LED substrate and high-voltage-resistant LED lamp |
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2014
- 2014-10-29 CN CN201410590480.1A patent/CN104302063B/en active Active
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2015
- 2015-01-14 WO PCT/CN2015/070712 patent/WO2016065744A1/en active Application Filing
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05308158A (en) * | 1992-04-30 | 1993-11-19 | Mitsubishi Electric Corp | Transmitting circuit |
| CN202165873U (en) * | 2011-07-08 | 2012-03-14 | 深圳市盛世创业电子有限公司 | No-drive LED lamp |
| CN102595718A (en) * | 2012-01-31 | 2012-07-18 | 江苏好的节能光电科技有限公司 | Circuit for enhancing use reliability of discrete LED light source |
| CN102966871A (en) * | 2012-08-02 | 2013-03-13 | 福建新文行灯饰有限公司 | Heat dissipation-type LED lamp |
| CN103542386A (en) * | 2013-11-01 | 2014-01-29 | 深圳市九洲光电科技有限公司 | Light-emitting diode (LED) substrate and high voltage resistant LED lamp |
| CN204168554U (en) * | 2014-10-29 | 2015-02-18 | 东莞勤上光电股份有限公司 | A kind of LED circuit |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105898913A (en) * | 2015-02-12 | 2016-08-24 | 松下知识产权经营株式会社 | Light source unit and illuminating device |
| CN105898913B (en) * | 2015-02-12 | 2019-08-09 | 松下知识产权经营株式会社 | Light source unit and luminaire |
| CN107454707A (en) * | 2017-05-15 | 2017-12-08 | 上海路傲电子科技有限公司 | A kind of LED illumination linear constant current drive circuit of absorbable metal substrate leakage stream |
| WO2018210161A1 (en) * | 2017-05-15 | 2018-11-22 | 上海路傲电子科技有限公司 | Led-illumination linear and constant current driving circuit capable of absorbing metal substrate leakage current |
| CN107454707B (en) * | 2017-05-15 | 2024-01-30 | 上海路傲电子科技有限公司 | LED illumination linear constant current driving circuit capable of absorbing leakage current of metal substrate |
| CN107248815A (en) * | 2017-06-07 | 2017-10-13 | 浙江大学 | Low EMI center of asymmetries tap rectification circuit |
| CN107248815B (en) * | 2017-06-07 | 2020-04-28 | 浙江大学 | Low EMI asymmetric center tap rectifier circuit |
| CN111758301A (en) * | 2018-02-23 | 2020-10-09 | 昕诺飞控股有限公司 | Lighting unit, lighting system and method of connecting lighting units |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104302063B (en) | 2017-08-25 |
| WO2016065744A1 (en) | 2016-05-06 |
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Effective date of registration: 20170922 Address after: 523000 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. |
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Effective date of registration: 20191204 Address after: Room 208, Qinshang photoelectric office building, hengjiangxia industrial first road, hengjiangxia village, Changping Town, Dongguan City, Guangdong Province Patentee after: Guangdong Qinshang semiconductor lighting technology Engineering Co., Ltd Address before: 523000 Guangdong city of Dongguan province Changping Zhen Heng Jiang Jiang Xia Heng Industrial Road, set up a file Patentee before: KINGSUN OPTOELECTRONIC CO., LTD. |
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Address after: Room 408, No.3, Gongye 4th Road, hengjiangxia, Changping Town, Dongguan City, Guangdong Province 523000 Patentee after: Guangdong QINSHANG Smart City Technology Engineering Co., Ltd Address before: Room 208, Qinshang photoelectric office building, hengjiangxia industrial first road, hengjiangxia village, Changping Town, Dongguan City, Guangdong Province Patentee before: Guangdong Qinshang semiconductor lighting technology Engineering Co.,Ltd. |
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| CP03 | Change of name, title or address |