CN105578641B - A kind of LED lamp - Google Patents
A kind of LED lamp Download PDFInfo
- Publication number
- CN105578641B CN105578641B CN201510946915.6A CN201510946915A CN105578641B CN 105578641 B CN105578641 B CN 105578641B CN 201510946915 A CN201510946915 A CN 201510946915A CN 105578641 B CN105578641 B CN 105578641B
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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
- H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
- H05B45/30—Driver circuits
- H05B45/37—Converter circuits
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
- Y02B20/30—Semiconductor lamps, e.g. solid state lamps [SSL] light emitting diodes [LED] or organic LED [OLED]
Abstract
The invention discloses a kind of light fixture, it includes pedestal, strut, lampshade, LED drive circuit and LED load, wherein strut has retractility, LED load is arranged on the top of strut, LED drive circuit includes civil power, current rectifying and wave filtering circuit, drive circuit, output circuit and feedback circuit, characterized by further comprising regulation circuit, it is connected between current rectifying and wave filtering circuit and drive circuit, by adjusting the problem of circuit can eliminate the LED stroboscopics caused when current rectifying and wave filtering circuit is directly connected to drive circuit.
Description
Technical field
The present invention relates to lighting field, more particularly to a kind of LED lamp.
Background technology
With the development of science and technology, LED is as new type light source, and with small volume, power consumption is low, light efficiency is high, the life-span
Long, environmentally friendly the advantages of, it is widely used in lighting field, miscellaneous LED drive circuit is consequently also occurred in that, in practical application
In, influence all will be produced to luminous efficiency and life-span using different LED drive circuits.
At present in numerous driving LED mode, it is some use current rectifying and wave filtering circuit and LED drive circuit be directly connected to
Realize LED high efficiency drive, but its exist LED load flicker, it is fragile, have the defects such as stronger High-frequency Interference, to user
Bring inconvenience.In the application, LED drive circuit needs to eliminate as much as the stroboscopic problem caused during LED drivings.
The content of the invention
In order to solve the above problems, present invention aims at provide it is a kind of can eliminate LED drivings when the stroboscopic that causes ask
The LED lamp of topic.
The invention provides a kind of LED lamp, including lamp socket, strut, lampshade, LED drive circuit and LED load, its
Middle strut has retractility, and LED load is arranged on the top of strut, and LED drive circuit includes civil power, current rectifying and wave filtering circuit, drive
Dynamic circuit, output circuit and feedback circuit, it is characterised in that also including regulation circuit, it is connected to current rectifying and wave filtering circuit and driving
Between circuit, wherein current rectifying and wave filtering circuit include piezo-resistance R1, it is inductance L1, inductance L2, resistance R2, resistance R3, electric capacity C1, whole
Current circuit, inductance L1 one end, inductance L2 one end connect the live wire L and zero line N of civil power, inductance the L1 other end, electricity respectively
Feel the input of L2 another termination rectification circuit, resistance R2 and resistance R3 is connected to inductance L1 and inductance L2 two ends respectively.
Further, above-mentioned rectification circuit is full bridge rectifier.
Further, drive circuit includes inductance L3, diode D2, voltage-regulator diode D3, diode D4, voltage-regulator diode
D5, diode D6, diode D7, transformer T, triode Q3, metal-oxide-semiconductor Q4, driving chip U1, wherein inductance L3 a termination are whole
The positive output end of current circuit, the other end is followed by driving chip U1 voltage input end VCC, inductance L3 through diode D4, resistance R14
Armature winding of the other end through transformer T, diode D7 be followed by driving chip U1 output end DRV, resistance R8 and resistance R9
Series connection is followed by between the inductance L3 other end and triode Q3 colelctor electrode, and the triode Q3 adjusted circuit of colelctor electrode is followed by
The negative output terminal of current rectifying and wave filtering circuit, resistance R8 and resistance R9 tie point connects diode D2 positive pole and triode Q3 base
Pole, the diode D2 other end connects triode Q3 emitter stage, electric capacity C2 one end, resistance R10 one end respectively, electric capacity C2's
Another termination triode Q3 colelctor electrode, resistance R10 another termination metal-oxide-semiconductor Q4 grid, metal-oxide-semiconductor Q4 source electrode connects triode
Q3 colelctor electrode, metal-oxide-semiconductor Q4 drain electrode is followed by triode Q3 colelctor electrode through resistance R11, and voltage-regulator diode D5 anode connects electricity
Feel the L3 other end, voltage-regulator diode D5 negative electrode connects diode D6 negative electrode, and diode D6 anode is followed by through diode D7
Driving chip U1 output end DRV, the driving chip U1 includes FET, and the drain electrode of wherein FET is used as driving
Chip U1 output, the source electrode of FET connects metal-oxide-semiconductor Q4 drain electrode.
Further, output circuit includes voltage-regulator diode D8, electric capacity C6 and resistance R15, voltage-regulator diode D8 sun
Pole connects the anode of transformer T secondary windings, and voltage-regulator diode D8 negative electrode is followed by the negative terminal of transformer T secondary windings through LED strip.
Further, feedback circuit includes diode D9, inductance L4, three terminal regulator TL431, photoelectrical coupler OC, two
Pole pipe D9 anode connects transformer T assists winding anode, and diode D9 negative electrode is after inductance L4, resistance R18, resistance R19
Three terminal regulator TL431 anode is connect, three terminal regulator TL431 reference pole connecting resistance R18 and R19 tie point, three ends are steady
Depressor TL431 negative electrode is connected through resistance R17 with diode D9 negative electrode, and the anode of transmitting tube is through resistance in photoelectrical coupler OC
R16 connects diode D9 negative electrode, and the negative electrode of transmitting tube is connect photosensitive three in three terminal regulator TL431 negative electrode, photoelectrical coupler OC
The emitter stage that the colelctor electrode of pole pipe connects phototriode in driving chip U1 feedback end FB, photoelectrical coupler OC connects driving chip
FET source electrode in U1.
Further, regulation circuit includes metal-oxide-semiconductor Q1, resistance R4, resistance R5, resistance R6, wherein triode Q2, metal-oxide-semiconductor
Q1 drain electrode connects the positive output end of rectification circuit, and metal-oxide-semiconductor Q1 source electrode is born defeated through the resistance R4 positive output ends for being followed by rectification circuit
Go out end, the positive output end of a resistance R5 termination rectification circuit, resistance R5 another termination metal-oxide-semiconductor Q1 grid and triode
Q2 colelctor electrode, triode Q2 emitter stage connects the negative output terminal of rectification circuit, and triode Q2 base stage is through resistance R6, resistance R7
The negative output terminal of rectification circuit is followed by, voltage-stabiliser tube D1 is connected between metal-oxide-semiconductor Q1 grid and the negative output terminal of rectification circuit, resistance
R6, resistance R7 tie point are connected with triode Q3 colelctor electrodes in drive circuit.
The present invention between current rectifying and wave filtering circuit and drive circuit by increasing regulation circuit so that output voltage and electric current
It is stable, so as to eliminate the stroboscopic caused during LED drivings.
Brief description of the drawings
Fig. 1 is structural representation of the invention；
Fig. 2 is a kind of circuit structure diagram of present invention driver circuit.
Embodiment
Accompanying drawing below will be referred and synthesized and the present invention is described in detail in conjunction with the embodiments.
The present embodiment provides a kind of LED lamp, including lamp socket, strut, lampshade, LED drive circuit and LED load, its
Middle strut has retractility, and LED load is arranged on the top of strut,
As shown in figure 1, LED drive circuit include civil power 1, current rectifying and wave filtering circuit 2, drive circuit 3, output circuit 4 and
Feedback circuit 5, it is characterised in that also including regulation circuit 6, it is connected between current rectifying and wave filtering circuit 2 and drive circuit 3.
Fig. 2 shows the detailed circuit structure of LED drive circuit of the present invention, is specially：
Current rectifying and wave filtering circuit 2 includes piezo-resistance R1, inductance L1, inductance L2, resistance R2, resistance R3, electric capacity C1, rectified current
Road, inductance L1 one end, inductance L2 one end connect the live wire L and zero line N of civil power 1, inductance the L1 other end, inductance L2 respectively
Another termination rectification circuit input, resistance R2 and resistance R3 are connected to inductance L1 and inductance L2 two ends, rectification respectively
Circuit is full bridge rectifier.
Adjusting circuit 6 includes metal-oxide-semiconductor Q1, resistance R4, resistance R5, resistance R6, triode Q2, wherein metal-oxide-semiconductor Q1 drain electrode
The positive output end of rectification circuit is connect, metal-oxide-semiconductor Q1 source electrode is followed by the positive output end negative output terminal of rectification circuit, resistance through resistance R4
The positive output end of a R5 termination rectification circuit, resistance R5 another termination metal-oxide-semiconductor Q1 grid and triode Q2 current collection
Pole, triode Q2 emitter stage connects the negative output terminal of rectification circuit, and triode Q2 base stage is followed by rectification through resistance R6, resistance R7
The negative output terminal of circuit, voltage-stabiliser tube D1 is connected between metal-oxide-semiconductor Q1 grid and the negative output terminal of rectification circuit, resistance R6, resistance
R7 tie point is connected with triode Q3 colelctor electrodes in drive circuit 3.
Drive circuit 3 includes inductance L3, diode D2, voltage-regulator diode D3, diode D4, voltage-regulator diode D5, two poles
Pipe D6, diode D7, transformer T, triode Q3, metal-oxide-semiconductor Q4, driving chip U1, wherein inductance L3 a termination rectification circuit
Positive output end, the other end is followed by driving chip U1 voltage input end VCC through diode D4, resistance R14, and inductance L3's is another
Armature winding of the end through transformer T, diode D7 are followed by driving chip U1 output end DRV, after resistance R8 connects with resistance R9
Between the colelctor electrode for being connected to the inductance L3 other end and triode Q3, the triode Q3 adjusted circuit 6 of colelctor electrode is followed by rectification
The negative output terminal of filter circuit 2, resistance R8 and resistance R9 tie point connects diode D2 positive pole and triode Q3 base stage,
The diode D2 other end connects triode Q3 emitter stage, electric capacity C2 one end, resistance R10 one end respectively, and electric capacity C2's is another
One termination triode Q3 colelctor electrode, resistance R10 another termination metal-oxide-semiconductor Q4 grid, metal-oxide-semiconductor Q4 source electrode meets triode Q3
Colelctor electrode, metal-oxide-semiconductor Q4 drain electrode is followed by triode Q3 colelctor electrode through resistance R11, and voltage-regulator diode D5 anode connects inductance
The L3 other end, voltage-regulator diode D5 negative electrode connects diode D6 negative electrode, and diode D6 anode is followed by driving through diode D7
Dynamic chip U1 output end DRV, the driving chip U1 includes FET, and the wherein drain electrode of FET is used as driving core
Piece U1 output, the source electrode of FET connects metal-oxide-semiconductor Q4 drain electrode.
Output circuit 4 includes voltage-regulator diode D8, electric capacity C6 and resistance R15, and voltage-regulator diode D8 anode connects transformation
The anode of device T secondary windings, voltage-regulator diode D8 negative electrode is followed by the negative terminal of transformer T secondary windings through LED strip.
Feedback circuit 5 include diode D9, inductance L4, three terminal regulator TL431, photoelectrical coupler OC, diode D9's
Anode connects transformer T assists winding anode, and diode D9 negative electrode is through inductance L4, resistance R18, that resistance R19 is followed by three ends is steady
Depressor TL431 anode, three terminal regulator TL431 reference pole connecting resistance R18 and R19 tie point, three terminal regulator TL431
Negative electrode be connected through resistance R17 with diode D9 negative electrode, the anode of transmitting tube connects two poles through resistance R16 in photoelectrical coupler OC
Pipe D9 negative electrode, the negative electrode of transmitting tube connects the current collection of phototriode in three terminal regulator TL431 negative electrode, photoelectrical coupler OC
The emitter stage that pole connects phototriode in driving chip U1 feedback end FB, photoelectrical coupler OC connects field-effect in driving chip U1
Pipe source electrode.
Due to the increase regulation circuit 6 between current rectifying and wave filtering circuit 2 and drive circuit 3, regulation circuit 6 is felt by resistance R6
Output voltage is surveyed, so as to control triode Q2 conducting and shut-off, triode Q2 conducting is with turning off and then controlling metal-oxide-semiconductor Q1's
Conducting and shut-off, the conducting by metal-oxide-semiconductor is with shut-off to adjust the output of circuit, and voltage-regulator diode R4 plays protection to metal-oxide-semiconductor Q1
Effect.The increase of regulation circuit 6 can eliminate the LED load frequency caused when current rectifying and wave filtering circuit 2 is directly connected to drive circuit 3
Sudden strain of a muscle problem.
The preferred embodiments of the present invention are the foregoing is only, are not intended to limit the invention, for art technology
For personnel, the present invention can have various modifications and variations, within the spirit and principles of the invention, and the modification made all should
Within protection scope of the present invention.
Claims (7)
1. a kind of LED lamp, it includes lamp socket, strut, lampshade, LED drive circuit and LED load, and wherein strut has and stretched
Contracting, LED load is arranged on the top of strut, and LED drive circuit includes civil power（1）, current rectifying and wave filtering circuit（2）, drive circuit
（3）, output circuit（4）And feedback circuit（5）, it is characterised in that also including regulation circuit（6）, it is connected to current rectifying and wave filtering circuit
（2）With drive circuit（3）Between, wherein current rectifying and wave filtering circuit（2）Including piezo-resistance R1, inductance L1, inductance L2, resistance R2,
Resistance R3, electric capacity C1, rectification circuit, inductance L1 one end, inductance L2 one end connect civil power respectively（1）Live wire L and zero line
The input of N, inductance the L1 other end, inductance L2 another termination rectification circuit, resistance R2 and resistance R3 is connected to electricity respectively
Feel L1 and inductance L2 two ends.
2. a kind of LED lamp according to claim 1, it is characterised in that the current rectifying and wave filtering circuit（2）In rectified current
Road is full bridge rectifier.
3. a kind of LED lamp according to claim 1, it is characterised in that the drive circuit（3）Including inductance L3, two
Pole pipe D2, voltage-regulator diode D3, diode D4, voltage-regulator diode D5, diode D6, diode D7, transformer T, triode Q3,
The positive output end of metal-oxide-semiconductor Q4, driving chip U1, wherein inductance L3 a termination rectification circuit, the other end is through diode D4, resistance
R14 is followed by driving chip U1 voltage input end VCC, inductance L3 armature winding of the other end through transformer T, after diode D7
Driving chip U1 output end DRV is met, resistance R8 connects with resistance R9 is followed by the collection of the other end in inductance L3 and triode Q3
Between electrode, the triode Q3 adjusted circuit of colelctor electrode（6）It is followed by current rectifying and wave filtering circuit（2）Negative output terminal, resistance R8 with
Resistance R9 tie point connects diode D2 positive pole and triode Q3 base stage, and the diode D2 other end connects triode respectively
Q3 emitter stage, electric capacity C2 one end, resistance R10 one end, electric capacity C2 another termination triode Q3 colelctor electrode, resistance
R10 another termination metal-oxide-semiconductor Q4 grid, metal-oxide-semiconductor Q4 source electrode connects triode Q3 colelctor electrode, and metal-oxide-semiconductor Q4 drain electrode is through electricity
Resistance R11 is followed by triode Q3 colelctor electrode, and voltage-regulator diode D5 anode connects the inductance L3 other end, voltage-regulator diode D5 the moon
Pole connects diode D6 negative electrode, and diode D6 anode is followed by driving chip U1 output end DRV through diode D7.
4. a kind of LED lamp according to claim 3, it is characterised in that：The driving chip U1 includes FET,
Wherein the drain electrode of FET is as driving chip U1 output, and the source electrode of FET connects metal-oxide-semiconductor Q4 drain electrode.
5. a kind of LED lamp according to one of Claims 1-4, it is characterised in that the output circuit（4）Including steady
Diode D8, electric capacity C6 and resistance R15 are pressed, voltage-regulator diode D8 anode connects the anode of transformer T secondary windings, voltage stabilizing two
Pole pipe D8 negative electrode is followed by the negative terminal of transformer T secondary windings through LED strip.
6. a kind of LED lamp according to claim 5, it is characterised in that the feedback circuit（5）Including diode D9,
Inductance L4, three terminal regulator TL431, photoelectrical coupler OC, diode D9 anode connect transformer T assists winding anode, two
Pole pipe D9 negative electrode is followed by three terminal regulator TL431 anode, three terminal regulator TL431 through inductance L4, resistance R18, resistance R19
Reference pole connecting resistance R18 and R19 tie point, three terminal regulator TL431 negative electrode of the negative electrode through resistance R17 Yu diode D9
Connection, the anode of transmitting tube connects diode D9 negative electrode through resistance R16 in photoelectrical coupler OC, and it is steady that the negative electrode of transmitting tube connects three ends
The colelctor electrode of phototriode meets driving chip U1 feedback end FB, photoelectricity coupling in depressor TL431 negative electrode, photoelectrical coupler OC
The emitter stage of phototriode connects FET source electrode in driving chip U1 in clutch OC.
7. a kind of LED lamp according to claim 3, it is characterised in that the regulation circuit（6）Including metal-oxide-semiconductor Q1, electricity
R4, resistance R5, resistance R6, triode Q2 are hindered, wherein metal-oxide-semiconductor Q1 drain electrode connects the positive output end of rectification circuit, metal-oxide-semiconductor Q1 source
Pole is followed by the positive output end negative output terminal of rectification circuit, the positive output end of a resistance R5 termination rectification circuit, electricity through resistance R4
R5 another termination metal-oxide-semiconductor Q1 grid and triode Q2 colelctor electrode is hindered, triode Q2 emitter stage connects rectification circuit
Negative output terminal, triode Q2 base stage is followed by the negative output terminal of rectification circuit through resistance R6, resistance R7, and voltage-stabiliser tube D1 is connected to MOS
Between pipe Q1 grid and the negative output terminal of rectification circuit, resistance R6, resistance R7 tie point and drive circuit（3）Middle triode
Q3 colelctor electrodes are connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510946915.6A CN105578641B (en) | 2015-12-17 | 2015-12-17 | A kind of LED lamp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510946915.6A CN105578641B (en) | 2015-12-17 | 2015-12-17 | A kind of LED lamp |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105578641A CN105578641A (en) | 2016-05-11 |
| CN105578641B true CN105578641B (en) | 2017-09-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510946915.6A Active CN105578641B (en) | 2015-12-17 | 2015-12-17 | A kind of LED lamp |
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| Country | Link |
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| CN (1) | CN105578641B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105828484A (en) * | 2016-05-18 | 2016-08-03 | 上海欧美拉光电股份有限公司 | Super energy-saving LED lamp system and rectifier circuit thereof |
| CN106211468B (en) * | 2016-08-19 | 2018-02-02 | 盐城工学院 | A kind of LED drive circuit |
| CN108521694B (en) * | 2018-03-29 | 2023-09-22 | 电子科技大学 | LED half-bridge circuit with feedback variable-frequency constant-current drive |
| CN112218407B (en) * | 2020-08-27 | 2023-04-18 | 盐城工学院 | LED drive circuit without drive chip |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2870373Y (en) * | 2006-01-04 | 2007-02-14 | 谢志强 | Adjustable energy-saving warning lamp |
| JP4864994B2 (en) * | 2009-03-06 | 2012-02-01 | シャープ株式会社 | LED drive circuit, LED illumination lamp, LED illumination device, and LED illumination system |
| US8299724B2 (en) * | 2010-03-19 | 2012-10-30 | Active-Semi, Inc. | AC LED lamp involving an LED string having separately shortable sections |
| US8803436B2 (en) * | 2011-05-10 | 2014-08-12 | Lutron Electronics Co., Inc. | Dimmable screw-in compact fluorescent lamp having integral electronic ballast circuit |
| TW201325302A (en) * | 2011-12-02 | 2013-06-16 | Unity Opto Technology Co Ltd | LED driving device and method thereof |
| TWM494455U (en) * | 2014-09-23 | 2015-01-21 | Unity Opto Technology Co Ltd | Drive circuit for reducing LED flicker |
| CN205356734U (en) * | 2015-12-17 | 2016-06-29 | 盐城工学院 | Light -emitting diode (LED) lighting equipment |
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2015
- 2015-12-17 CN CN201510946915.6A patent/CN105578641B/en active Active
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| CN105578641A (en) | 2016-05-11 |
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| CB03 | Change of inventor or designer information |
Inventor after: Zhou Feng Inventor after: Cang Jian Inventor after: Wang Rugang Inventor after: Zhou Liuying Inventor after: Sun Dongsheng Inventor before: Zhou Feng Inventor before: Wang Rugang Inventor before: Zhou Liuying Inventor before: Sun Dongsheng |
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Effective date of registration: 20180515 Address after: 213000 No. two private Road Industrial Park, Jiangsu, Changzhou Xinbei District, Luo Xi Town, Hong Kong Private Airport Industrial Park No. 20 Patentee after: JIANGSU YEDI AUTOMOTIVE LIGHTING SYSTEMS CO., LTD. Address before: 224051 middle road of hope Avenue, Yancheng City, Jiangsu Province, No. 1 Patentee before: Yangcheng Institute of Technology |
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| CP03 | Change of name, title or address |
Address after: 213001 Xiezhuang village, Luoxi Town, Xinbei District, Changzhou City, Jiangsu Province Patentee after: Jiangsu Yedi Light Co.,Ltd. Address before: No.20, Minmin 2nd Road, Tangzhuang airport Private Industrial Park, Luoxi Town, Xinbei District, Changzhou City, Jiangsu Province Patentee before: JIANGSU YEDI AUTOMOTIVE LIGHTING SYSTEMS Co.,Ltd. |