CN201204722Y - Automatic light-adjusting LED illumination driver - Google Patents

Automatic light-adjusting LED illumination driver Download PDF

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Publication number
CN201204722Y
CN201204722Y CNU2007201870981U CN200720187098U CN201204722Y CN 201204722 Y CN201204722 Y CN 201204722Y CN U2007201870981 U CNU2007201870981 U CN U2007201870981U CN 200720187098 U CN200720187098 U CN 200720187098U CN 201204722 Y CN201204722 Y CN 201204722Y
Authority
CN
China
Prior art keywords
circuit
automatic light
pwm control
led illumination
light meter
Prior art date
Application number
CNU2007201870981U
Other languages
Chinese (zh)
Inventor
王元成
王丽娜
Original Assignee
王元成
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by 王元成 filed Critical 王元成
Priority to CNU2007201870981U priority Critical patent/CN201204722Y/en
Application granted granted Critical
Publication of CN201204722Y publication Critical patent/CN201204722Y/en

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Classifications

    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02BCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B20/00Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
    • Y02B20/72Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps in street lighting

Abstract

The utility model relates to a automatic light modulation LED illumination driver, comprising an AC input and high voltage commutation filter circuit, a switch tube circuit, a PWM control circuit, a conversion transformer circuit, a constant-current feedback circuit, an over-voltage automatic light modulation feedback circuit and a commutation filtering output circuit. The output terminal of the AC input and high voltage commutation filter circuit is connected with the conversion transformer circuit, the switch tube circuit and the PWM control circuit; the output terminal of the switch tube circuit is connected with the conversion transformer circuit; the PWM control circuit controls the switch tube circuit; the output terminal of the conversion transformer circuit is connected with the commutation filtering output circuit; the commutation filtering output circuit drives the LED module group and feeds the feedback signal to the PWM control circuit via the constant-current feedback circuit and the over-voltage automatic light modulation feedback circuit. The automatic light modulation energy-saving LED illumination driver is suitable for road lamp, advertisement lamp and so on. The utility model can save energy and prolong service life of the LED illumination devices.

Description

A kind of LED illumination driver with an automatic light meter
Technical field
The utility model relates to a kind of led drive circuit, relate in particular to be suitable for the public place can LED illumination driver with an automatic light meter.
Background technology
The LED illumination generally is to emit white light and super white light LEDs.Along with the maturation of white light LEDs technology and constantly development, the main flow of LED illumination becoming gradually illuminating industry.Particularly the America and Europe waits some developed countries to take the lead in promoting the universalness of LED illumination.LED illumination has not only that power consumption is little, at the bottom of the long service life, thermal radiation, luminous advantage such as stable, but also pollute modern development theory such as little, environmental protection.Because being its light output and drive currents, the electrical characteristics of LED are directly proportional, so be higher to the qualitative requirement of driving power.If LED works under non-constant electric current, can cause luminous instability, illuminating effect is not good, damages easily and reduces its useful life.Therefore surely keeping reliable drive circuit is one of core in the LED lighting apparatus.Nowadays it is also varied to say so surely to keep reliable led drive circuit, according to factor difference such as input voltage, input electrical network, output voltage, output current and the different drive circuit that is complementary of needs.Booster type, voltage-dropping type are arranged; Isolate and non-isolated etc.But they all have common characteristics, are exactly to want constant current drives LED.The time of darkness, daybreak all is irregular throughout the year as you know, if street lamp with regularly mode, that lamp that may be darkness does not also have bright, it is light already lamp has so just caused inconvenience and waste resource also bright.
Summary of the invention
The utility model provides a kind of energy-saving LED constant-current drive circuit that can regularly regulate brightness of illumination at deficiency of the prior art.
In order to solve the problems of the technologies described above, the utility model is solved by following technical proposals:
A kind of LED illumination driver with an automatic light meter, comprise AC input and high-voltage rectifying filter circuit, the switching tube circuit, pwm control circuit, the conversion transformer circuit, the constant current feedback circuit, overvoltage feedback circuit with an automatic light meter, the rectifying and wave-filtering output circuit, described AC input is connected the conversion transformer circuit with high-voltage rectifying filter circuit output, the switching tube circuit, pwm control circuit, described switching tube circuit output end connects the conversion transformer circuit, described pwm control circuit control switch pipe circuit, described conversion transformer circuit output end link, the rectifying and wave-filtering output circuit, described rectifying and wave-filtering output circuit driving LED module group, it is respectively by the constant current feedback circuit simultaneously, overvoltage feedback circuit with an automatic light meter feeds back to pwm control circuit with feedback signal.
As preferably, described pwm control circuit is a core with chip UC3842 PWM controller.
As preferably, described constant current feedback circuit mainly is made up of the output constant-current error comparison circuit that with comparator LM358 is core.
As preferably, described overvoltage feedback circuit with an automatic light meter is mainly formed by transferring the error comparison circuit to combine photosensitive probe automatically with comparator and the voltage stabilizing that is combined into core.
By technical solutions of the utility model, realize energy-conservation led driver with an automatic light meter, it is more suitable for being used in street lamp, advertising lamp, places such as exterior feature are walked in the park.Deepening gradually with ambient brightness generally can be set, utilize the photosensitive probe signal feedback, the brightness of LED illumination light-emitting is strengthened gradually.It not only can save a large amount of energy, also prolongs the useful life of LED lighting apparatus because reduced power during work.
Figure of description
Fig. 1 is a schematic block circuit diagram of the present utility model.
Fig. 2 is total work circuit theory diagrams of present embodiment.
Embodiment
Below in conjunction with accompanying drawing and embodiment the utility model is described in further detail:
A kind of LED illumination driver with an automatic light meter, comprise AC input and high-voltage rectifying filter circuit 1, the switching tube circuit, pwm control circuit 3, conversion transformer circuit 4, constant current feedback circuit 5, overvoltage feedback circuit 6 with an automatic light meter, rectifying and wave-filtering output circuit 7, described AC input is connected conversion transformer circuit 4 with high-voltage rectifying filter circuit 1 output, switching tube circuit 2, pwm control circuit 3, described switching tube circuit 2 outputs connect conversion transformer circuit 4, described pwm control circuit 3 control switch pipe circuit 2, described conversion transformer circuit 4 outputs link rectifying and wave-filtering output circuit 7, described rectifying and wave-filtering output circuit driving LED module group 8, it is respectively by constant current feedback circuit 5 simultaneously, overvoltage feedback circuit 6 with an automatic light meter feeds back to pwm control circuit 3 with feedback signal.In the present embodiment, described pwm control circuit 3 is a core with chip UC3842 PWM controller, and described constant current feedback circuit 5 mainly is made up of the output constant-current error comparison circuit that with comparator LM358 is core.Described overvoltage feedback circuit 6 with an automatic light meter is mainly formed by transferring the error comparison circuit to combine photosensitive probe automatically with comparator and the voltage stabilizing that is combined into core.Be that technical solutions of the utility model are mainly formed single-ended flyback isolating switch stabilized voltage power supply by circuit such as switching tube circuit, pwm control circuits, add feedback circuit that error comparator forms, and luminosity probe form led driver with an automatic light meter, it is simple in structure, and adopts PWM UC3842 and two chips of error comparator LM358.It can not only reach constant current driven LED, makes LED illumination high stability, high reliability, the purpose in high useful life, but also can utilize LM358 comparator and photosensitive probe to combine, and accomplishes function with an automatic light meter.This product has advantages such as high efficiency, low-loss, small size and low cost.
This circuit product can dispel the heat by lamp outer casing, and effect is better.Be that radiator portion is close to external shell,, constitute the LED lighting with supporting bracket and electrical cnnector.
In a word, the above only is preferred embodiment of the present utility model, and all equalizations of being done according to the utility model claim change and modify, and all should belong to the covering scope of the utility model patent.

Claims (4)

1. LED illumination driver with an automatic light meter, it is characterized in that, comprise AC input and high-voltage rectifying filter circuit, the switching tube circuit, pwm control circuit, the conversion transformer circuit, the constant current feedback circuit, overvoltage feedback circuit with an automatic light meter, the rectifying and wave-filtering output circuit, described AC input is connected the conversion transformer circuit with high-voltage rectifying filter circuit output, the switching tube circuit, pwm control circuit, described switching tube circuit output end connects the conversion transformer circuit, described pwm control circuit control switch pipe circuit, described conversion transformer circuit output end connects the rectifying and wave-filtering output circuit, described rectifying and wave-filtering output circuit driving LED module group, it is respectively by the constant current feedback circuit simultaneously, overvoltage feedback circuit with an automatic light meter feeds back to pwm control circuit with feedback signal.
2. according to the described a kind of LED illumination driver with an automatic light meter of claim 1, it is characterized in that described pwm control circuit is a core with chip UC3842 PWM controller.
3. according to claim 1 or 2 described a kind of LED illumination drivers with an automatic light meter, it is characterized in that described constant current feedback circuit mainly is made up of the output constant-current error comparison circuit that with comparator LM358 is core.
4. according to the described a kind of LED illumination driver with an automatic light meter of claim 3, it is characterized in that described overvoltage feedback circuit with an automatic light meter is mainly formed by transferring the error comparison circuit to combine photosensitive probe automatically with comparator and the voltage stabilizing that is combined into core.
CNU2007201870981U 2007-12-28 2007-12-28 Automatic light-adjusting LED illumination driver CN201204722Y (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CNU2007201870981U CN201204722Y (en) 2007-12-28 2007-12-28 Automatic light-adjusting LED illumination driver

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CNU2007201870981U CN201204722Y (en) 2007-12-28 2007-12-28 Automatic light-adjusting LED illumination driver

Publications (1)

Publication Number Publication Date
CN201204722Y true CN201204722Y (en) 2009-03-04

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Family Applications (1)

Application Number Title Priority Date Filing Date
CNU2007201870981U CN201204722Y (en) 2007-12-28 2007-12-28 Automatic light-adjusting LED illumination driver

Country Status (1)

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CN (1) CN201204722Y (en)

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101801145A (en) * 2010-04-23 2010-08-11 海洋王照明科技股份有限公司 Led lamp control circuit and led lamp
CN101799130A (en) * 2010-04-07 2010-08-11 苏州东大光普科技有限公司 Illumination device with automatic dimming function
CN101835308A (en) * 2010-04-27 2010-09-15 海洋王照明科技股份有限公司 Led lamp control circuit and led lamp
CN101841962A (en) * 2010-06-07 2010-09-22 上海合亚经贸有限公司 LED lamp control method and device without light decay
CN101932156A (en) * 2009-06-19 2010-12-29 泰金宝电通股份有限公司 Drive circuit of light-emitting diode and illumination device
CN101977466A (en) * 2010-11-02 2011-02-16 深圳市富满电子有限公司南山分公司 White light-emitting diode drive circuit
CN102143625A (en) * 2010-01-29 2011-08-03 深圳市长运通集成电路设计有限公司 Device for controlling light emission of LED (Light Emitting Diode) and LED lamp
CN102300359A (en) * 2010-06-25 2011-12-28 首利实业股份有限公司 Power supply device of light emitting diode (LED) lamp
CN102789048A (en) * 2012-05-21 2012-11-21 上海显恒光电科技股份有限公司 Cold light source illumination system for microscope
CN102802325A (en) * 2012-09-10 2012-11-28 浙江大学 Circuit for realizing PWM (pulse width modulation) dimming of LED (light emitting diode) current by multi-phase high-frequency carrier PWM
CN101562929B (en) * 2009-05-15 2012-12-12 广州金升阳科技有限公司 Isolated driving power for high-power light emitting diode
CN103002641A (en) * 2012-11-23 2013-03-27 天津天地伟业数码科技有限公司 Infrared lamp driving circuit, method and circuit board
CN103068125A (en) * 2012-12-28 2013-04-24 辽宁师范大学 Solar energy supply light-emitting diode (LED) constant current driving power with controllable voltage
CN103200735A (en) * 2013-03-06 2013-07-10 广州凯盛电子科技有限公司 Light-emitting diode (LED) actuator preventing LED from flickering
CN103369769A (en) * 2012-03-31 2013-10-23 海洋王照明科技股份有限公司 LED fly-back constant current driving circuit
CN106604472A (en) * 2016-12-30 2017-04-26 深圳Tcl数字技术有限公司 Led drive circuit

Cited By (25)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101562929B (en) * 2009-05-15 2012-12-12 广州金升阳科技有限公司 Isolated driving power for high-power light emitting diode
CN101932156A (en) * 2009-06-19 2010-12-29 泰金宝电通股份有限公司 Drive circuit of light-emitting diode and illumination device
CN102143625B (en) * 2010-01-29 2014-06-11 深圳市长运通集成电路设计有限公司 Device for controlling light emission of LED (Light Emitting Diode) and LED lamp
CN102143625A (en) * 2010-01-29 2011-08-03 深圳市长运通集成电路设计有限公司 Device for controlling light emission of LED (Light Emitting Diode) and LED lamp
CN101799130A (en) * 2010-04-07 2010-08-11 苏州东大光普科技有限公司 Illumination device with automatic dimming function
CN101801145B (en) * 2010-04-23 2013-08-14 海洋王照明科技股份有限公司 Led lamp control circuit and led lamp
CN101801145A (en) * 2010-04-23 2010-08-11 海洋王照明科技股份有限公司 Led lamp control circuit and led lamp
CN101835308B (en) * 2010-04-27 2013-08-14 海洋王照明科技股份有限公司 Led lamp control circuit and led lamp
CN101835308A (en) * 2010-04-27 2010-09-15 海洋王照明科技股份有限公司 Led lamp control circuit and led lamp
CN101841962B (en) * 2010-06-07 2013-06-19 上海合亚经贸有限公司 LED lamp control method and device without light decay
CN101841962A (en) * 2010-06-07 2010-09-22 上海合亚经贸有限公司 LED lamp control method and device without light decay
CN102300359A (en) * 2010-06-25 2011-12-28 首利实业股份有限公司 Power supply device of light emitting diode (LED) lamp
CN101977466A (en) * 2010-11-02 2011-02-16 深圳市富满电子有限公司南山分公司 White light-emitting diode drive circuit
CN101977466B (en) * 2010-11-02 2011-11-23 深圳市富满电子有限公司南山分公司 White light-emitting diode drive circuit
CN103369769A (en) * 2012-03-31 2013-10-23 海洋王照明科技股份有限公司 LED fly-back constant current driving circuit
CN103369769B (en) * 2012-03-31 2016-09-07 海洋王照明科技股份有限公司 LED fly-back constant-current drive circuit
CN102789048A (en) * 2012-05-21 2012-11-21 上海显恒光电科技股份有限公司 Cold light source illumination system for microscope
CN102802325A (en) * 2012-09-10 2012-11-28 浙江大学 Circuit for realizing PWM (pulse width modulation) dimming of LED (light emitting diode) current by multi-phase high-frequency carrier PWM
CN103002641B (en) * 2012-11-23 2014-12-03 天津天地伟业数码科技有限公司 Method for driving infrared lamp of infrared lamp driving circuit
CN103002641A (en) * 2012-11-23 2013-03-27 天津天地伟业数码科技有限公司 Infrared lamp driving circuit, method and circuit board
CN103068125A (en) * 2012-12-28 2013-04-24 辽宁师范大学 Solar energy supply light-emitting diode (LED) constant current driving power with controllable voltage
CN103200735A (en) * 2013-03-06 2013-07-10 广州凯盛电子科技有限公司 Light-emitting diode (LED) actuator preventing LED from flickering
CN103200735B (en) * 2013-03-06 2015-04-15 广州凯盛电子科技有限公司 Light-emitting diode (LED) actuator preventing LED from flickering
CN106604472A (en) * 2016-12-30 2017-04-26 深圳Tcl数字技术有限公司 Led drive circuit
CN106604472B (en) * 2016-12-30 2019-05-31 深圳Tcl数字技术有限公司 LED drive circuit

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TR01 Transfer of patent right

Effective date of registration: 20110722

Address after: 322200, Pujiang County Economic Development Zone, star Bi Avenue, No. 88

Patentee after: ZHEJIANG SINGBEE LIGHTING TECHNOLOGY CO., LTD.

Address before: 322200 No. 88, Bi Bi Avenue, Pujiang Economic Development Zone, Zhejiang Province

Patentee before: Wang Yuancheng

COR Change of bibliographic data

Free format text: CORRECT: ADDRESS; FROM: 322200 NO. 88, XINGBI AVENUE, ECONOMIC DEVELOPMENT ZONE, PUJIANG COUNTY, ZHEJIANG PROVINCE TO: 322200 NO. 88, XINGBI AVENUE, ECONOMIC DEVELOPMENT ZONE, PUJIANG COUNTY

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Owner name: ZHEJIANG SINGBEE LIGHTING TECHNOLOGY CO., LTD.

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Effective date: 20110722

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Granted publication date: 20090304

Termination date: 20121228

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