CN201037608Y - LED energy-saving lamp device - Google Patents
LED energy-saving lamp device Download PDFInfo
- Publication number
- CN201037608Y CN201037608Y CNU2007200504314U CN200720050431U CN201037608Y CN 201037608 Y CN201037608 Y CN 201037608Y CN U2007200504314 U CNU2007200504314 U CN U2007200504314U CN 200720050431 U CN200720050431 U CN 200720050431U CN 201037608 Y CN201037608 Y CN 201037608Y
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- lamp device
- saving lamp
- led
- led lamp
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Abstract
The utility model discloses a LED energy-saving lamp device, comprising a rectifying circuit unit, a filter circuit unit , a LED lamp group, a first level protective circuit unit clamping the voltage to the prearranged voltage and a switch constant current circuit unit, wherein, the first level protective circuit unit is in parallel connection with the power terminal of an electric circuit; after the source current is rectified by the rectifying circuit unit and filtered by the filter circuit unit, the source current enters into the LED lamp group; the LED lamp group is in series connection with the switch constant current circuit unit to form a series connection loop; the series connection loop is in parallel connection with the rectifying circuit unit and the filter circuit unit. The utility model has the advantages that the utility model can prevent the LED lamp from being damaged due to the breakdown of the instant surge current and can effectively prolong the service life of the LED lamp along with simple circuit structure and low manufacturing cost.
Description
Technical field
The utility model relates to a kind of LED electricity-saving lamp device, particularly a kind of LED electricity-saving lamp device with pressure-stabilizing constant flow circuit.
Background technology
In energy starved today; the LED lamp is widely used owing to possessing good energy-saving effect; but the electric property of LED lamp decision LED lamp can't be applied to high-voltage power circuit; having now utilizes civil power that the LED illuminating lamp or the various LED lamp string of power supply are provided; its circuit arrangement for powering generally is directly to give the power supply of LED lamp after alternating current 220V power rectifier, the filtering, and circuit is not established other safeguard measures.Unstable or repeat in the multiple switching at line voltage, circuit arrangement just can produce powerful electric current and flow through load, and this electric current is called surge current, and the generation of surge current makes that the LED lamp is breakdown easily and damages.And existing circuit arrangement step-down, rectification circuit complexity; electric parts is many; cause the bulky of circuit arrangement; increase the use cost height of LED lamp; owing to do not establish other safeguard measures; the transient voltage punch through damage that produces when the easy sensed thunder of LED lamp or inductive load switch, thus service life of LED lamp shortened, cause the LED lamp can't extensive use.
Summary of the invention
The purpose of this utility model is to overcome the deficiencies in the prior art, provides a kind of circuit structure simple, can prevent that the moment surge current from puncturing LED lamp and the stable LED electricity-saving lamp device of circuit voltage.
A kind of LED electricity-saving lamp device of the present utility model comprises rectification circuit unit, filter circuit unit and LED lamp string, it is characterized in that: also comprise first class of protection circuit unit and the switch constant-current circuit unit of voltage clamp to predetermined voltage; Described first class of protection circuit unit is connected in parallel in the circuit power end; source current flows into LED lamp string behind the rectification of rectification circuit unit, filter circuit unit filtering; LED lamp string and switch constant-current circuit units in series connect to form series loop, and series loop and rectification circuit unit, filter circuit unit are connected in parallel.
The utility model comprises that also one is used to absorb the second class protection circuit of moment surge current, and this second class protection circuit and series loop are connected in parallel; But also comprising the reduction voltage circuit that is connected in series between power input and the rectification circuit unit, described reduction voltage circuit is composed in parallel by electric capacity and resistance.
The bridge rectifier that described rectification circuit unit is made up of four diodes.
Described filter circuit unit includes the electric capacity that is connected in parallel in rectification circuit unit output.
Described LED lamp string is connected in series in the concentric circles mode, and switch constant-current circuit unit is the CL2 family chip.
Described first class of protection circuit is two-way Transient Suppression Diode, and the second class protection circuit is unidirectional Transient Suppression Diode.
The beneficial effects of the utility model are: the first, and the moment surge current that is produced in the time of absorbing switch connection is avoided the breakdown damage of LED lamp; The second, have the switch constant-current characteristics, stable operating voltage, the circuit caloric value is little, effectively prolongs the service life of LED lamp; The 3rd, circuit structure is simple, low cost of manufacture.
Description of drawings
Fig. 1 is a circuit diagram of the present utility model.
The specific embodiment
As shown in Figure 1, the utility model comprises rectification circuit unit 3, filter circuit unit 4, LED lamp string 7, first class of protection circuit unit 1, reduction voltage circuit 2 and switch constant-current circuit unit 6.First class of protection circuit unit 1 is the bidirectional transient voltage inhibition diode TVSl that is connected in the mains supply end by a parallel connection; it can absorb instantaneous big pulse power at positive and negative both direction; and voltage clamping at predeterminated level; have the response speed that is exceedingly fast, can holding circuit avoid static, the transient voltage that produces when inductive load switches and the induction superpotential damage that thunder produced.Reduction voltage circuit 2 is made of capacitor C 1 and resistance R 1 parallel connection; be connected in series between power input and the rectification circuit unit 3, give the control circuit of forming by rectification circuit unit 3, filter circuit unit 4, second class protection circuit 5 and switch constant-current circuit unit 6 power supply after the civil power alternating current 220V voltage step-down.The bridge rectifier that rectification circuit unit 3 is made up of four diodes.Filter circuit unit 4 is made of the output that electrochemical capacitor C2 is parallel to rectification circuit unit 3, and resistance R2 can improve filter effect in electrochemical capacitor C2 two ends parallel connection.Second class protection circuit 5 in the series loop two ends parallel connection of switch constant-current circuit unit 6 and LED lamp string 7 compositions, the moment surge current that circuit is produced when being used to absorb the switch joint makes LED lamp string 7 and switch constant-current circuit unit 6 avoid the interference of surge current; Second class protection circuit 5 is that a unidirectional transient state suppresses diode TVS2, and switch constant-current circuit unit adopts CL2 series IC chip, and for example model is the IC chip of CL2K4.Because the operating current of the LED lamp that different manufacturers is produced all has difference, LED lamp of the present utility model adopts three concentric circles modes to be connected in series, make that so not only LED lamp string is specious, and operating current is more stable, helps improving the service life of LED lamp.
Claims (9)
1. a LED electricity-saving lamp device comprises rectification circuit unit, filter circuit unit and LED lamp string, it is characterized in that: also comprise first class of protection circuit unit and the switch constant-current circuit unit of voltage clamp to predetermined voltage;
Described first class of protection circuit unit is connected in parallel in the circuit power end; source current flows into LED lamp string behind the rectification of rectification circuit unit, filter circuit unit filtering; LED lamp string and switch constant-current circuit units in series connect to form series loop, and series loop and rectification circuit unit, filter circuit unit are connected in parallel.
2. a kind of LED electricity-saving lamp device according to claim 1 is characterized in that: comprise that also one is used to absorb the second class protection circuit of moment surge current, this second class protection circuit and series loop are connected in parallel.
3. a kind of LED electricity-saving lamp device according to claim 1, it is characterized in that: also comprise the reduction voltage circuit that is connected in series between power input and the rectification circuit unit, described reduction voltage circuit is composed in parallel by electric capacity and resistance.
4. a kind of LED electricity-saving lamp device according to claim 1 is characterized in that: the bridge rectifier that described rectification circuit unit is made up of four diodes.
5. a kind of LED electricity-saving lamp device according to claim 1, it is characterized in that: described filter circuit unit includes the electric capacity that is connected in parallel in rectification circuit unit output.
6. a kind of LED electricity-saving lamp device according to claim 1 is characterized in that: described LED lamp string is connected in series in the concentric circles mode.
7. a kind of LED electricity-saving lamp device according to claim 1 is characterized in that: described switch constant-current circuit unit is the CL2 family chip.
8. a kind of LED electricity-saving lamp device according to claim 1, it is characterized in that: described first class of protection circuit is two-way Transient Suppression Diode.
9. a kind of LED electricity-saving lamp device according to claim 2, it is characterized in that: described second class protection circuit is unidirectional Transient Suppression Diode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200504314U CN201037608Y (en) | 2007-04-17 | 2007-04-17 | LED energy-saving lamp device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200504314U CN201037608Y (en) | 2007-04-17 | 2007-04-17 | LED energy-saving lamp device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201037608Y true CN201037608Y (en) | 2008-03-19 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007200504314U Expired - Fee Related CN201037608Y (en) | 2007-04-17 | 2007-04-17 | LED energy-saving lamp device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201037608Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101476693B (en) * | 2009-01-20 | 2010-06-02 | 汉得利（常州）电子有限公司 | Caution flasher |
| 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 |
| CN108075457A (en) * | 2017-12-27 | 2018-05-25 | 上海传英信息技术有限公司 | A kind of anti-surge circuit, surge pipe and the electrical equipment with the surge pipe |
| CN108696959A (en) * | 2017-04-10 | 2018-10-23 | 晶元光电股份有限公司 | The driver of light emitting diode |
-
2007
- 2007-04-17 CN CNU2007200504314U patent/CN201037608Y/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101476693B (en) * | 2009-01-20 | 2010-06-02 | 汉得利（常州）电子有限公司 | Caution flasher |
| CN108696959A (en) * | 2017-04-10 | 2018-10-23 | 晶元光电股份有限公司 | The driver of light emitting diode |
| 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 |
| CN108075457A (en) * | 2017-12-27 | 2018-05-25 | 上海传英信息技术有限公司 | A kind of anti-surge circuit, surge pipe and the electrical equipment with the surge pipe |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP02 | Change in the address of a patent holder |
Address after: No. 9, Sha Tau Village, Camp Town, Guangdong City, Lianjiang Province, China: 524446 Patentee after: Li Yanghua Address before: No. 10, Xie Cun, bamboo pier Town, Camp Town, Zhanjiang City, Guangdong Province, Lianjiang 524446, China Patentee before: Li Yanghua |
|
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080319 |