CN201177243Y - Adjustable light LED lighting lamp - Google Patents

Adjustable light LED lighting lamp Download PDF

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Publication number
CN201177243Y
CN201177243Y CNU2008200856233U CN200820085623U CN201177243Y CN 201177243 Y CN201177243 Y CN 201177243Y CN U2008200856233 U CNU2008200856233 U CN U2008200856233U CN 200820085623 U CN200820085623 U CN 200820085623U CN 201177243 Y CN201177243 Y CN 201177243Y
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CN
China
Prior art keywords
circuit
led
light
pwm control
control circuit
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Expired - Fee Related
Application number
CNU2008200856233U
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Chinese (zh)
Inventor
周安平
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Individual
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Individual
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Priority to CNU2008200856233U priority Critical patent/CN201177243Y/en
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    • 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
    • Y02B20/40—Control techniques providing energy savings, e.g. smart controller or presence detection

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  • Led Devices (AREA)
  • Circuit Arrangement For Electric Light Sources In General (AREA)

Abstract

The utility model provided an LED illuminating lamp with adjustable light, which is formed by a light emitting diode (LED), a power circuit and a drive circuit of the LED, the drive circuit is provided with a light adjustment PWM control circuit [I] which takes a timer integrated circuit [NE] as a core, the light adjustment PWM control circuit [I] is provided with a PWM output end [3] and current constant source chip circuit [II] which is provided with a voltage input end and drives the LED to emit light, and the voltage input end is connected with the PWM output end in the light adjustment PWM control circuit by a resistor [R3]. The PMW can be input from the voltage input end in the current constant chip circuit to adjust the brightness of the LED, and output current output by a current constant chip is constant current rather than pulse. Therefore, compared with the prior art, the LED of the utility model emits light without pulse, which ensures that the working stability and the service life are more excellent.

Description

The Dimmable LED illuminating lamp
Technical field
The utility model relates to a kind of high-power LED illuminating lamp of Dimmable LED illuminating lamp, especially tunable optical, belong to lighting technical field.
Background technology
The LED illuminating lamp is made of LED (light emitting diode), power circuit and LED driving circuit.When the LED illumination light needed light modulation, it was exactly by the electric current that the pulsewidth of modulation operating current is regulated by LED brightness to be changed that a kind of scheme is arranged.As introducing among the Chinese utility model patent ZL200620047055.9 " pulse width type energy-saving LED lamp dimmer ", adopt as the timer integrated circuit of NE555 one class produces turnable pulse width with after the driving lumination of light emitting diode that boosts, adjusting pulsewidth size obtains the brightness size.But thisly make light emitting diode work with pulse current, though very high people's the eyesight that do not cause of pulse frequency discover, harmful in the service life and the job stability of light emitting diode.
Summary of the invention
At above-mentioned deficiency, the utility model be exactly to provide a kind of not only can light modulation but also be not direct Dimmable LED illuminating lamp to regulating by the electric current pulsewidth of light emitting diode.
The Dimmable LED illuminating lamp that the utility model provides, constitute with light emitting diode, power circuit and LED driving circuit, having in drive circuit with the timer integrated circuit is the light modulation pwm control circuit of core, the light modulation pwm control circuit has the PWM output, other has the luminous constant-current source chip circuit that has voltage input end of driving LED, and this voltage input end is connected through a resistance with PWM output in the light modulation pwm control circuit.
As everyone knows, the constant-current source chip circuit that has voltage input end (ADJ) is subjected to the electric current of the big small intensity of the exportable difference of influence of its input voltage pulse width, and promptly the PWM (pulse width modulation) that imports at the voltage input end of constant-current source chip circuit can regulate the bright dark of LED.And constant-current source LED's that chip outputs to is constant current rather than pulse, and therefore compared with prior art, the luminous no pulse of LED of the present utility model makes performances such as its job stability and life-span better.
Description of drawings
Accompanying drawing is the electrical schematic diagram of the utility model one embodiment, among the figure: I-light modulation pwm control circuit, II-constant-current source chip circuit, C1, C2, C3-capacitor, D1-diode, LED-light emitting diode, the NE-timer integrated circuit (trade mark NE555, wherein: the 1-earth terminal, 2-triggers input, the 3-PWM output, the 4-reset terminal, 5-controls voltage end, 6-threshold value input, 7-discharge end, 8-power end), R1, R2, R3-resistor, TR-potentiometer, U-power input.
The specific embodiment
This example is that core design becomes the adjustable circuit of pulse width, i.e. light modulation pwm control circuit with timer integrated circuit NE555 chip.In this circuit, 1 pin ground connection of NE555 chip, 2 pin are connected with 6 pin after resistance R 2, potentiometer TR and another resistor R 1 are connected power supply, 3 pin are through the pwm pulse of a loading resistor R3 output pulse width continuous variable, 4 pin and 8 pin connect power supply, 5 pin are through concussion capacitor C3 ground connection, 7 pin connect the change resistance utmost point of potentiometer, one clamp diode D1 is arranged between 7 pin and 6 pin, the positive pole of clamp diode points to 7 pin, 6 pin are also through a capacitor C2 ground connection, and power input U presses ground through a capacitor C1, with the elimination disturbing pulse.Wherein resistor R 1, potentiometer TR, resistor R 2 and capacitor C2 constitute required time integral circuit, adjust potentiometer TR and change the ratio of the resistance value between 7 pin and power end and 6 pin, can change 3 pin output duty of ratio.
Having with constant-current source chip ZXLD1360 is the constant-current source chip circuit II of core, and its voltage input end is connected with the PWM output of light modulation pwm control circuit through loading resistor R3.Obtain the pulse of different dutycycles when the constant-current source chip circuit after, can be to the different drive current of LED output intensity, thus reach effect to the LED light modulation.Dutycycle is big more, and the drive current of constant-current source chip circuit output is big more, and LED brightness is big more.

Claims (1)

1, a kind of Dimmable LED illuminating lamp, constitute with light emitting diode, power circuit and LED driving circuit, having in drive circuit with the timer integrated circuit is the light modulation pwm control circuit of core, the light modulation pwm control circuit has the PWM output, it is characterized in that the constant-current source chip circuit that has voltage input end that has driving LED luminous in addition, this voltage input end is connected through a resistance with PWM output in the light modulation pwm control circuit.
CNU2008200856233U 2008-04-09 2008-04-09 Adjustable light LED lighting lamp Expired - Fee Related CN201177243Y (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CNU2008200856233U CN201177243Y (en) 2008-04-09 2008-04-09 Adjustable light LED lighting lamp

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CNU2008200856233U CN201177243Y (en) 2008-04-09 2008-04-09 Adjustable light LED lighting lamp

Publications (1)

Publication Number Publication Date
CN201177243Y true CN201177243Y (en) 2009-01-07

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Family Applications (1)

Application Number Title Priority Date Filing Date
CNU2008200856233U Expired - Fee Related CN201177243Y (en) 2008-04-09 2008-04-09 Adjustable light LED lighting lamp

Country Status (1)

Country Link
CN (1) CN201177243Y (en)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101754538A (en) * 2010-02-01 2010-06-23 佛山市伊戈尔电业制造股份有限公司 Adjustable photocontrol circuit of LED (light-emitting diode) 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
CN101877923A (en) * 2009-04-29 2010-11-03 鸿富锦精密工业（深圳）有限公司 Led drive circuit
CN102523653A (en) * 2011-12-20 2012-06-27 江苏飞格光电有限公司 Controllable LED current source circuit
CN101778512B (en) * 2010-01-27 2012-10-31 哈尔滨工程大学 Synchronous buck-boost type vehicular high-power LED driver
CN102811523A (en) * 2011-05-31 2012-12-05 海洋王照明科技股份有限公司 LED identification lamp
CN103619108A (en) * 2013-12-10 2014-03-05 上思县东岽电子科技有限责任公司 Solar LED floodlight drive power supply module capable of automatically adjusting light
CN104717789A (en) * 2013-12-16 2015-06-17 深圳市海洋王照明工程有限公司 LED boosting constant-current drive circuit and lighting device
CN104754793A (en) * 2013-12-25 2015-07-01 深圳市海洋王照明工程有限公司 Voltage-reduction constant-current LED (Light Emitting Diode) driving circuit, driving device and lighting system
CN107564432A (en) * 2017-08-16 2018-01-09 杭州鸟人光电科技有限公司 Programmable image demonstrating apparatus

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101877923A (en) * 2009-04-29 2010-11-03 鸿富锦精密工业（深圳）有限公司 Led drive circuit
CN101877923B (en) * 2009-04-29 2014-01-15 鸿富锦精密工业（深圳）有限公司 Led drive circuit
CN101778512B (en) * 2010-01-27 2012-10-31 哈尔滨工程大学 Synchronous buck-boost type vehicular high-power LED driver
CN101754538B (en) * 2010-02-01 2012-12-12 伊戈尔电气股份有限公司 Adjustable photocontrol circuit of LED (light-emitting diode) lamp
CN101754538A (en) * 2010-02-01 2010-06-23 佛山市伊戈尔电业制造股份有限公司 Adjustable photocontrol circuit of LED (light-emitting diode) 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
CN102811523B (en) * 2011-05-31 2014-07-23 海洋王照明科技股份有限公司 LED identification lamp
CN102811523A (en) * 2011-05-31 2012-12-05 海洋王照明科技股份有限公司 LED identification lamp
CN102523653A (en) * 2011-12-20 2012-06-27 江苏飞格光电有限公司 Controllable LED current source circuit
CN103619108A (en) * 2013-12-10 2014-03-05 上思县东岽电子科技有限责任公司 Solar LED floodlight drive power supply module capable of automatically adjusting light
CN104717789A (en) * 2013-12-16 2015-06-17 深圳市海洋王照明工程有限公司 LED boosting constant-current drive circuit and lighting device
CN104754793A (en) * 2013-12-25 2015-07-01 深圳市海洋王照明工程有限公司 Voltage-reduction constant-current LED (Light Emitting Diode) driving circuit, driving device and lighting system
CN104754793B (en) * 2013-12-25 2019-04-12 深圳市海洋王照明工程有限公司 A kind of decompression constant current LED drive circuit, driving device and lighting system
CN107564432A (en) * 2017-08-16 2018-01-09 杭州鸟人光电科技有限公司 Programmable image demonstrating apparatus

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C14 Grant of patent or utility model
GR01 Patent grant
C17 Cessation of patent right
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20090107

Termination date: 20100409