CN202425143U - LED driving circuit and LED lamp - Google Patents
LED driving circuit and LED lamp Download PDFInfo
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- CN202425143U CN202425143U CN2012200044909U CN201220004490U CN202425143U CN 202425143 U CN202425143 U CN 202425143U CN 2012200044909 U CN2012200044909 U CN 2012200044909U CN 201220004490 U CN201220004490 U CN 201220004490U CN 202425143 U CN202425143 U CN 202425143U
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Abstract
The utility model discloses an LED (light-emitting diode) driving circuit and an LED lamp. The LED driving circuit comprises a rectifying module, a light source module and a constant-current diode, wherein the constant-current diode is serially connected with the light source module; and the constant-current diode can output constant current within a very wide voltage range and has a very high dynamic impedance, so that when the power voltage in a circuit is unstable, the constant-current diode can ensure the current of the circuit constant and supply constant current to the light source module so as to keep the light source module in an optimal working state and provide illumination for a user. The LED lamp comprises the LED driving circuit, wherein the LED driving circuit replaces the conventional LED driving circuit. The LED lamp omits a driver structurally, so that the size of the LED lamp is reduced, the structure is simpler and the cost is reduced.
Description
Technical field
The utility model relates to the LED lamp, particularly a kind of led drive circuit and LED lamp.
Background technology
LED (Light Emitting Diode, light-emitting diode) is a kind of solid-state semiconductor device, and it can directly be converted into light to electricity.At present, characteristics such as led light source is long, pollution-free with the life-span, light efficiency height are replace incandescent and fluorescent light just progressively, but in the LED lighting circuit, which kind of power supply all can not directly be supplied power to LED.As want application of LEDs to make lighting source, will solve the problem of LED power drives.Therefore, existing LED light fixture all has a driver that is used for driving LED work, has increased the manufacturing cost of LED lamp, and has increased the volume of LED light fixture.
And the temperature coefficient of the P-N of LED knot is for bearing the potential barrier electromotive force of LED reduction when temperature raises.Therefore, LED can not directly use voltage fed, must adopt current limiting measures.Otherwise the rising of temperature when working along with LED, electric current can be increasing, so that damage LED.The ratio of luminous flux that flows through electric current and the LED of LED simultaneously also is non-linear.The luminous flux of LED increases and increases along with the electric current that flows through LED, but is not directly proportional, and luminous flux increases fewly more more finally.Therefore, LED is worked under than higher fixed current value a luminous efficiency., the minor fluctuations of voltage all will cause fluctuating widely of electric current.
Therefore, be necessary to design one and can steady flow cross the circuit of the electric current of LED, and make the simple in structure of LED light fixture.
Summary of the invention
The utility model technical problem to be solved is: propose a kind of led drive circuit and LED lamp, led drive circuit is replaced existing led drive circuit, the LED lamp structurally saves driver, and the volume of LED lamp is reduced, and structure is simpler, also reduces cost.
The utility model proposes a kind of led drive circuit; Comprise the alternating current to input carry out the rectification module of rectification, be connected at least one light source module at said rectification module two ends and be connected said rectification module and said light source module between be used for the current regulator diode of constant this circuit electric current, the positive pole of said rectification module is connected with the positive pole of said current regulator diode; Said current regulator diode of a said light source module series connection, parallel with one another between the said light source module.
Preferably, the alternating current of input said rectification module of input after the fuse that is used for protective circuit, piezo-resistance.
Preferably, comprise that also one is used for the filtration module of the flutter component of the unidirectional pulsating dc voltage of elimination with the output smoothing direct voltage.
Preferably, said filtration module comprises filter capacitor and bleeder resistance, said filter capacitor and the said bleeder resistance two ends at said light source module parallel with one another.
Preferably, said light source module comprises one or more LED luminous elements, and serial or parallel connection connects between the said LED luminous element, and said rectification module comprises rectifier bridge.
The utility model proposes a kind of LED lamp again; Comprise through lead and external power source connecting circuit plate and led drive circuit; Said led drive circuit is arranged on said circuit board; Said led drive circuit comprise the alternating current to input carry out the rectification module of rectification, be connected at least one light source module at said rectification module two ends and be connected said rectification module and said light source module between be used for the current regulator diode of constant this circuit electric current, the positive pole of said rectification module is connected with the positive pole of said current regulator diode; Said current regulator diode of a said light source module series connection, parallel with one another between the said light source module.
Preferably, the alternating current of input said rectification module of input after the fuse that is used for protective circuit, piezo-resistance.
Preferably, said led drive circuit comprises that also one is used for the filtration module of the flutter component of the unidirectional pulsating dc voltage of elimination with the output smoothing direct voltage.
Preferably, said filtration module comprises filter capacitor and bleeder resistance, said filter capacitor and the said bleeder resistance two ends at said light source module parallel with one another.
Preferably, said light source module comprises one or more LED luminous elements, and serial or parallel connection connects between the said LED luminous element, and said rectification module comprises rectifier bridge.
The led drive circuit of the utility model comprises rectification module, light source module and current regulator diode; Current regulator diode is connected with light source module, and current regulator diode can be exported constant electric current in very wide voltage range, and has very high motional impedance; Can guarantee all when supply voltage supply instability therefore in circuit, occurring that circuital current is stable; For light source module provides stable electric current, make light source module be in best operating state, for the user provides illumination.The LED lamp of the utility model comprises above-mentioned led drive circuit, and led drive circuit has replaced existing led drive circuit, and the LED lamp structurally saves driver, and the volume of LED lamp is reduced, and structure is simpler, has also reduced cost.
Description of drawings
Fig. 1 is a led drive circuit block diagram among the embodiment of first and second embodiment and LED lamp of led drive circuit of the utility model;
Fig. 2 is led drive circuit figure among the embodiment of first embodiment and LED lamp of led drive circuit of the utility model;
Fig. 3 is led drive circuit figure among second embodiment of led drive circuit of the utility model;
Fig. 4 is the structural representation of LED lamp among the embodiment of LED lamp of the utility model.
The realization of the utility model purpose, functional characteristics and advantage will combine embodiment, further specify with reference to accompanying drawing.
Embodiment
Should be appreciated that specific embodiment described herein only in order to explanation the utility model, and be not used in qualification the utility model.
See figures.1.and.2; First embodiment of the led drive circuit of the utility model is proposed; Comprise to the alternating current from external power source 10 input carry out rectification rectification module 30, be connected a light source module 50 at rectification module 30 two ends and be connected rectification module 30 and light source module 50 between be used for the current regulator diode D1 of constant this circuit electric current; The positive pole of rectification module 30 is connected with the positive pole of current regulator diode D1, and light source module 50 is connected with current regulator diode D1.Rectification module 30 comprises rectifier bridge D0.Light source module 50 comprises a plurality of LED luminous element L, is connected in series each other between the LED luminous element L.This led drive circuit also comprises a circuit protection module 20, and circuit protection module 20 comprises fuse F1 and the piezo-resistance Rv that is used for protective circuit, and the alternating current of input is input rectifying module 30 behind fuse F1 and piezo-resistance Rv.Fuse F1 will be blown when circuit is short-circuited, and circuit is played the short-circuit protection effect.But piezo-resistance Rv transient suppression overvoltage, when the voltage in the circuit during less than a certain threshold values, piezo-resistance Rv is equivalent to insulator, and the electric current that flows through it is minimum, and the circuit operate as normal is had no adverse effects; When the voltage in the circuit during greater than a certain threshold values, the electric current that flows through it is very big, and piezo-resistance Rv can drag down too high voltage, prevents that overtension from destroying circuit, lets late-class circuit be operated in the scope of a safety.
The alternating current of input is used for the filtration module 40 of the flutter component of the unidirectional pulsating dc voltage of elimination with the output smoothing direct voltage through one again after rectifier bridge D0 rectification.This filtration module 40 is connected in parallel on the two ends of light source module 50.Filtration module 40 comprises filter capacitor C1 and bleeder resistance R2, filter capacitor C1 and the bleeder resistance R2 two ends at light source module 50 parallel with one another.The direct current of the alternating current of input output smoothing behind rectification module 30 and filtration module 40; Direct current is through current regulator diode D1, and current regulator diode D1 can export constant electric current in very wide voltage range, and has very high motional impedance; Can guarantee all when supply voltage supply instability therefore in circuit, occurring that circuital current is stable; For light source module 50 provides stable electric current, make the LED luminous element L of light source module 50 be in best operating state, for the user provides illumination.
With reference to figure Fig. 1 and Fig. 3; Second embodiment of the led drive circuit of the utility model is proposed; First embodiment of present embodiment and led drive circuit is basic identical; It mainly need not be put and be: led drive circuit comprises several light source modules 50 and several current regulator diode D1 that connect with light source module 50, and current regulator diode D1 of light source module 50 series connection is parallel with one another between the light source module 50.Can realize that a plurality of 50 whiles of light source module are luminous, even wherein a certain light source module 50 damages, other light sources module 50 also can continue luminous.The effect of first embodiment of the effect of present embodiment and led drive circuit is basic identical.
With reference to Fig. 1, Fig. 2 and Fig. 4, an embodiment of the LED lamp of the utility model is proposed, comprise a cylindrical diffuser 60, be arranged on circuit board 80 on the upper surface of this radiator 60 and the lampshade 70 that covers on light-emitting window.This circuit board 80 is connected with external power source 10 through lead, on circuit board 80, is provided with led drive circuit.This led drive circuit comprise the alternating current to input carry out the rectification module 30 of rectification, be connected a light source module 50 at rectification module 30 two ends and be connected rectification module 30 and light source module 50 between be used for the current regulator diode D1 of constant this circuit electric current; The positive pole of rectification module 30 is connected with the positive pole of current regulator diode D1, and light source module 50 is connected with current regulator diode D1.Rectification module 30 comprises rectifier bridge D0.Light source module 50 comprises a plurality of LED luminous element L, is connected in series each other between the LED luminous element L.This led drive circuit also comprises fuse F1 and the piezo-resistance Rv that is used for protective circuit, and the alternating current of input is input rectifying module 30 behind fuse F1 and piezo-resistance Rv.Fuse F1 will be blown when circuit is short-circuited, and circuit is played the short-circuit protection effect.But piezo-resistance Rv transient suppression overvoltage, when the voltage in the circuit during less than a certain threshold values, piezo-resistance Rv is equivalent to insulator, and the electric current that flows through it is minimum, and the circuit operate as normal is had no adverse effects; When the voltage in the circuit during greater than a certain threshold values, the electric current that flows through it is very big, and piezo-resistance Rv can drag down too high voltage, prevents that overtension from destroying circuit, lets late-class circuit be operated in the scope of a safety.
The alternating current of input is used for the filtration module 40 of the flutter component of the unidirectional pulsating dc voltage of elimination with the output smoothing direct voltage through one again after rectifier bridge D0 rectification.This filtration module 40 is connected in parallel on the two ends of light source module 50.Filtration module 40 comprises filter capacitor C1 and bleeder resistance R2, filter capacitor C1 and the bleeder resistance R2 two ends at light source module 50 parallel with one another.The direct current of the alternating current of input output smoothing behind rectification module 30 and filtration module 40; Direct current is through current regulator diode D1, and current regulator diode D1 can export constant electric current in very wide voltage range, and has very high motional impedance; Can guarantee all when supply voltage supply instability therefore in circuit, occurring that circuital current is stable; For light source module 50 provides stable electric current, make the LED luminous element L of light source module 50 be in best operating state, for the user provides illumination.
Thereby led drive circuit has replaced existing led drive circuit, and the LED lamp structurally saves driver, and the volume of LED lamp is reduced, and structure is simpler, has also reduced cost.
The above is merely the preferred embodiment of the utility model; Be not thus the restriction the utility model claim; Every equivalent structure or equivalent flow process conversion that utilizes the utility model specification and accompanying drawing content to be done; Or directly or indirectly be used in other relevant technical fields, all in like manner be included in the scope of patent protection of the utility model.
Claims (10)
1. led drive circuit; It is characterized in that; Comprise the alternating current to input carry out the rectification module of rectification, be connected at least one light source module at said rectification module two ends and be connected said rectification module and said light source module between be used for the current regulator diode of constant this circuit electric current, the positive pole of said rectification module is connected with the positive pole of said current regulator diode; Said current regulator diode of a said light source module series connection, parallel with one another between the said light source module.
2. led drive circuit according to claim 1 is characterized in that, the alternating current of input is the said rectification module of input after the fuse that is used for protective circuit, piezo-resistance.
3. led drive circuit according to claim 2 is characterized in that, comprises that also one is used for the filtration module of the flutter component of the unidirectional pulsating dc voltage of elimination with the output smoothing direct voltage.
4. led drive circuit according to claim 3 is characterized in that said filtration module comprises filter capacitor and bleeder resistance, said filter capacitor and the said bleeder resistance two ends at said light source module parallel with one another.
5. according to each described led drive circuit in the claim 1 to 4, it is characterized in that said light source module comprises one or more LED luminous elements, serial or parallel connection connects between the said LED luminous element, and said rectification module comprises rectifier bridge.
6. LED lamp; Comprise the circuit board and the led drive circuit that are connected with external power source through lead; It is characterized in that; Said led drive circuit is arranged on said circuit board; Said led drive circuit comprise the alternating current to input carry out the rectification module of rectification, be connected at least one light source module at said rectification module two ends and be connected said rectification module and said light source module between be used for the current regulator diode of constant this circuit electric current, the positive pole of said rectification module is connected with the positive pole of said current regulator diode; Said current regulator diode of a said light source module series connection, parallel with one another between the said light source module.
7. LED lamp according to claim 6 is characterized in that, the alternating current of input is the said rectification module of input after the fuse that is used for protective circuit, piezo-resistance.
8. LED lamp according to claim 7 is characterized in that, said led drive circuit comprises that also one is used for the filtration module of the flutter component of the unidirectional pulsating dc voltage of elimination with the output smoothing direct voltage.
9. LED lamp according to claim 8 is characterized in that said filtration module comprises filter capacitor and bleeder resistance, said filter capacitor and the said bleeder resistance two ends at said light source module parallel with one another.
10. according to each described LED lamp in the claim 6 to 9, it is characterized in that said light source module comprises one or more LED luminous elements, serial or parallel connection connects between the said LED luminous element, and said rectification module comprises rectifier bridge.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200044909U CN202425143U (en) | 2012-01-07 | 2012-01-07 | LED driving circuit and LED lamp |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200044909U CN202425143U (en) | 2012-01-07 | 2012-01-07 | LED driving circuit and LED lamp |
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| CN202425143U true CN202425143U (en) | 2012-09-05 |
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| CN2012200044909U Expired - Fee Related CN202425143U (en) | 2012-01-07 | 2012-01-07 | LED driving circuit and LED lamp |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103052222A (en) * | 2012-12-14 | 2013-04-17 | 无锡华润华晶微电子有限公司 | 220V light-dimmable constant-current drive high-voltage LED (Light Emitting Diode) circuit |
| CN103090237A (en) * | 2013-01-31 | 2013-05-08 | 东莞市贺喜光电有限公司 | Light-emitting diode (LED) lamp without power supply unit |
| CN103813592A (en) * | 2014-02-19 | 2014-05-21 | 上海亚明照明有限公司 | Linear power driving LED lamp and thunder-proof linear power driving LED lamp |
| CN103929851A (en) * | 2014-03-31 | 2014-07-16 | 深圳市九洲光电科技有限公司 | LED circuit with dimming function and color matching function |
| CN103945611A (en) * | 2014-04-22 | 2014-07-23 | 中国航天科技集团公司第九研究院第七七一研究所 | LED lamp constant current drive circuit based on conducting time control |
| CN105577169A (en) * | 2015-12-11 | 2016-05-11 | 中国北方发动机研究所(天津) | Vehicle-used wide-range voltage switching quantity input circuit |
| CN105706530A (en) * | 2013-09-11 | 2016-06-22 | 万斯创新公司 | DC LED driverless lighting assembly |
| CN107166209A (en) * | 2017-07-05 | 2017-09-15 | 中山市美耐特光电有限公司 | A kind of high-voltage LED light bar |
| CN110493927A (en) * | 2019-09-11 | 2019-11-22 | 厦门阳光恩耐照明有限公司 | A kind of light-operated circuit |
| CN112532085A (en) * | 2020-11-24 | 2021-03-19 | 中捷通信有限公司 | Power supply circuit and power adapter |
-
2012
- 2012-01-07 CN CN2012200044909U patent/CN202425143U/en not_active Expired - Fee Related
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103052222A (en) * | 2012-12-14 | 2013-04-17 | 无锡华润华晶微电子有限公司 | 220V light-dimmable constant-current drive high-voltage LED (Light Emitting Diode) circuit |
| CN103090237A (en) * | 2013-01-31 | 2013-05-08 | 东莞市贺喜光电有限公司 | Light-emitting diode (LED) lamp without power supply unit |
| CN105706530A (en) * | 2013-09-11 | 2016-06-22 | 万斯创新公司 | DC LED driverless lighting assembly |
| CN105706530B (en) * | 2013-09-11 | 2018-01-12 | 万斯创新公司 | DC LED are without driving light fixture |
| CN103813592A (en) * | 2014-02-19 | 2014-05-21 | 上海亚明照明有限公司 | Linear power driving LED lamp and thunder-proof linear power driving LED lamp |
| CN103929851A (en) * | 2014-03-31 | 2014-07-16 | 深圳市九洲光电科技有限公司 | LED circuit with dimming function and color matching function |
| CN103945611A (en) * | 2014-04-22 | 2014-07-23 | 中国航天科技集团公司第九研究院第七七一研究所 | LED lamp constant current drive circuit based on conducting time control |
| CN103945611B (en) * | 2014-04-22 | 2016-03-23 | 中国航天科技集团公司第九研究院第七七一研究所 | Based on the LED constant-current drive circuit that ON time controls |
| CN105577169A (en) * | 2015-12-11 | 2016-05-11 | 中国北方发动机研究所(天津) | Vehicle-used wide-range voltage switching quantity input circuit |
| CN107166209A (en) * | 2017-07-05 | 2017-09-15 | 中山市美耐特光电有限公司 | A kind of high-voltage LED light bar |
| CN110493927A (en) * | 2019-09-11 | 2019-11-22 | 厦门阳光恩耐照明有限公司 | A kind of light-operated circuit |
| CN112532085A (en) * | 2020-11-24 | 2021-03-19 | 中捷通信有限公司 | Power supply circuit and power adapter |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: HE HUAIYUAN Free format text: FORMER OWNER: ZHONGSHAN SHANWO LIGHTING CO., LTD. Effective date: 20140213 |
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| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 528400 ZHONGSHAN, GUANGDONG PROVINCE TO: 514400 MEIZHOU, GUANGDONG PROVINCE |
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| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20140213 Address after: 514400 Zhenlong village, Qi Ling, Wuhua County, Guangdong Province, two Patentee after: Chen Feng Address before: 528400, Zhongshan, Guangdong Province town of Cao an emerging Road East 62, first, third Patentee before: Zhongshan Shanwo Lighting Co.,Ltd. |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120905 Termination date: 20150107 |
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| EXPY | Termination of patent right or utility model |