CN103687212A - High-brightness LED lamp and control circuit - Google Patents
High-brightness LED lamp and control circuit Download PDFInfo
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- CN103687212A CN103687212A CN201310624775.1A CN201310624775A CN103687212A CN 103687212 A CN103687212 A CN 103687212A CN 201310624775 A CN201310624775 A CN 201310624775A CN 103687212 A CN103687212 A CN 103687212A
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- brightness led
- brightness
- led lamp
- control circuit
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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
Abstract
The invention relates to the field of lighting control circuits, in particular to a high-brightness LED lamp and a control circuit. The high-brightness LED lamp is formed by sequentially connecting a high-brightness LED optical module, a high-brightness LED drive circuit, and a power source. The high-brightness LED lamp is provided with the high-brightness LED drive control circuit. The high-brightness LED lamp and the control circuit thereof have the advantages that brightness of the LED lamp is convenient to control; light distribution uniformity is unaffected; the high-brightness LED lamp is widely applicable as streetlamps, projection lamps and the like; through the application of the technical scheme, the LED lamp can automatically dim with changes in ambient brightness, centralized, reliable and intelligent brightness regulation can be achieved, production and installation costs can be greatly reduced, and maintenance is easy.
Description
Technical field
The present invention relates to illumination control circuit field, specifically a kind of high-brightness LED lamp and control circuit.
Technical background
Street lamp in the market, the ligthing paraphernalias such as flood light all adopt a point-source of light to add upper reflector, utilize reflector to reach the effect of luminous intensity distribution, principle of luminosity due to high pressure sodium lamp, can not step-down use, for hope, from the peak period, reducing brightness, necessary with two bulbs or two-part ballast, can affect the uniformity of luminous intensity distribution like this, development along with LED green light source, each manufacturer all releases take the ligthing paraphernalia that LED is illuminating source, comprise LED street lamp, LED flood light etc., equally in order to meet the requirement that reduces brightness from the peak period, just need a kind of circuit of controlling LED light source.
Summary of the invention
For the problem of above-mentioned appearance, the present invention proposes a kind of control circuit of high-brightness LED lamp, has controlled easily the brightness of high-brightness LED lamp.
The present invention is achieved through the following technical solutions:
A control circuit for high-brightness LED lamp, comprises by high-brightness LED optics module, organizes the high-brightness LED lamp that high-brightness LED drive circuit, Switching Power Supply connect to form successively more, and described high-brightness LED lamp is provided with high-brightness LED Drive and Control Circuit.
The described LED Drive and Control Circuit being connected with high-brightness LED drive circuit is exported respectively driving switch control signal and drive current control signal, after the driving switch control signal input high-brightness LED drive circuit of output, trigger high-brightness LED drive circuit and open and turn-off, after output driving current control signal input high-brightness LED drive circuit, trigger increase and the minimizing of the drive current of high-brightness LED drive circuit.
The driving signal of described high-brightness LED drive circuit drives respectively each high-brightness LED module of high-brightness LED optics module.
The driving switch control signal of described high-brightness LED Drive and Control Circuit output, trigger the opening and turn-offing of high-brightness LED drive circuit of half, the forward drive current control signal of described high-brightness LED Drive and Control Circuit output triggers the increase of the drive current of high-brightness LED drive circuit.
Each high-brightness LED in each high-brightness LED module of described high-brightness LED optics module is spaced respectively, and each high-brightness LED around arranges and is the high-brightness LED in disparate modules.
Effect of the present invention is:
The control circuit of a kind of high-brightness LED lamp of the present invention, controlled easily the brightness of LED ligthing paraphernalia, met from the peak period brightness energy-conservation requirement that reduces by half, also can not affect the uniformity of luminous intensity distribution, can extensive use in the LED ligthing paraphernalias such as high-brightness LED street lamp, high light LED projector.
Accompanying drawing explanation
Fig. 1 theory structure schematic diagram of the present invention.
Fig. 2 high-brightness LED optics of the present invention module structural representation.
Fig. 3 high-brightness LED optical module structure of the present invention schematic diagram.
Fig. 4 lumen fraction VS of the present invention current diagram.
Fig. 5 the present invention controls multipath LED drive circuit Enable Pin (chip has band Enable/Disable function) circuit principle structure schematic diagram.
Fig. 6 the present invention controls multipath LED drive circuit Enable Pin (chip does not have band Enable/Disable function) circuit principle structure schematic diagram.Fig. 7 the present invention controls multipath LED drive circuit Enable Pin (chip has band Enable/Disable function) electrical block diagram.
Fig. 8 the present invention controls multipath LED drive circuit Enable Pin (chip does not have band Enable/Disable function) electrical block diagram.
In figure: 1, high-brightness LED optics module, 2, high-brightness LED Drive and Control Circuit, 3, Switching Power Supply, 4, high-brightness LED drive circuit, 5,6,7,8,9, high-brightness LED.
Embodiment
Referring to Fig. 1-8.A control circuit for high-brightness LED lamp, comprises the high-brightness LED lamp being connected to form successively by high-brightness LED optics module 1, high-brightness LED drive circuit 4, Switching Power Supply 3, and described high-brightness LED lamp is provided with high-brightness LED Drive and Control Circuit 2.The described LED Drive and Control Circuit 2 being connected with high-brightness LED drive circuit 4 is exported respectively driving switch control signal and drive current control signal, the driving switch control signal input high-brightness LED drive circuit 4 rear triggering high-brightness LED drive circuits of output are opened and are turn-offed, and output driving current control signal input high-brightness LED drive circuit 4 rear triggering high-brightness LED drive circuits increase and reduce.The driving signal of described high-brightness LED drive circuit 4 drives respectively 16 spoonfuls of each high-brightness LED modules of high-brightness LED optics module.Each high-brightness LED drive circuit 4 in described 16 spoonfuls of each high-brightness LED modules of high-brightness LED optics module is spaced respectively, and high-brightness LED 5 around arranges and is high-brightness LED 6, high-brightness LED 7, high-brightness LED 8, the high-brightness LED 9 in disparate modules.
The optical module of LED ligthing paraphernalia is comprised of a few row LED the different opticators rearranging a plurality of point-source of lights (LED), has between row and row certain angle, and every row LED is at same straight line, and granule number is different.By angle and granule number, regulate the illuminance that shines ground, make it to reach the uniform effect of light.In the situation that not changing angle, each row reduces the LED of similar number, and its optical uniformity can not change.In order to reach the effect reducing by half, we can turn off every half of arranging LED: best scheme is to turn off one every a LEDs.The drive circuit of LED ligthing paraphernalia is constant-current drive circuit.LED is because manufacturer is different, and its performance is different, and " lumen fraction VS electric current " difference especially can be reached brightness and reduced by half by the flow through electric current of LED of reduction.When electric current is 350mA, its lumen fraction is 1; If brightness reduces by half, lumen fraction is 0.5, and now corresponding electric current is 110mA, that is to say and will reach the effect that brightness reduces by half, and electric current need be dropped to 110mA from 350mA.
Concrete enforcement in high-brightness LED street lamp:
Embodiment 1:
Reduce the particle of lighting, control multipath LED drive circuit Enable Pin (chip has band Enable/Disable function).By the Enable/Disable function of chip, can directly control each road output circuit is ON, or OFF; By time timing control circuit, carry out setting-up time.Set certain time period for " contract fully " state, by chip, set each road output circuit for " OFF ", street lamp does not work; Set certain time period for " bright " state, by chip, set each road output circuit for " ON ", street lamp is lighted; Set certain time period for " part is closed " state, by chip, set a few roads output circuit for " OFF ", street lamp has part LED to cut out, and part is lighted.
Embodiment 2:
Reduce the particle of lighting, control LED drive circuit Enable Pin (chip does not have band Enable/Disable function).Each drive circuit Yu Yi road, road Relay is connected, and by Relay, controls LED drive circuit; By time timing control circuit, carry out setting-up time.Set certain time period for " contract fully " state, each road Relay is set as " OFF ", and each paths of LEDs drive circuit cuts out, and street lamp does not work; Set certain time period for " bright " state, each road Relay is set as " ON ", and each paths of LEDs drive circuit is open-minded, and street lamp is lighted; Set certain time period for " part is closed " state, a few road Re19y are set as " OFF ", and a few paths of LEDs drive circuits that are attached thereto are closed, and street lamp has part LED to cut out, and part is lighted.
Embodiment 3:
Reduce drive current, the resistance value of controlling LED drive circuit changes its drive current.Each road drive circuit has two groups of different resistance, by convert resistance value, controls the LED electric current of flowing through; The time timing control circuit of mistake carrys out setting-up time and controls and select electric group.Set certain time period for " completely bright " state, time timing control circuit selects to make the normal resistance of working of LED by controlling each road drive circuit, and LED normally works; Set certain time period for " half is bright " state, time timing control circuit will be controlled each road drive circuit and select another group resistance, and the electric current of the LED that flows through is lower than the electric current of normally working (this electric current will according to corresponding with the luminous flux of needs).
Claims (4)
1. a high-brightness LED lamp, by high-brightness LED optics module, organize high-brightness LED drive circuit more, power supply connects to form successively, it is characterized in that: described high-brightness LED lamp is provided with high-brightness LED Drive and Control Circuit.
2. the control circuit of a high-brightness LED lamp, it is characterized in that: the described LED Drive and Control Circuit being connected with high-brightness LED drive circuit is exported respectively driving switch control signal and drive current control signal, after the driving switch control signal triggering input high-brightness LED drive circuit of output, trigger the high-brightness LED drive circuit of half and open and turn-off, the forward drive current signal of high-brightness LED drive circuit drives respectively each high-brightness LED module of high-brightness LED optics module.
3. the control circuit of high-brightness LED lamp according to claim 2, it is characterized in that, described control circuit also comprises: sampling module, for the current supply circuit of described LED light source is carried out to current sample, and convert corresponding feedback voltage signal to, more described feedback voltage signal is transferred to the described control signal generation unit of described control module; Described control signal generation unit is according to described feedback voltage signal, and the PWM modulating wave of regulation output makes it in the PWM modulating wave duty ratio of selecting.
4. the control circuit of high-brightness LED lamp according to claim 2, in each high-brightness LED module of described high-brightness LED optics module, each high-brightness LED around arranges and is the high-brightness LED in disparate modules, it is characterized in that: the arrangement mode of each high-brightness LED is for being spaced.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310624775.1A CN103687212A (en) | 2013-11-29 | 2013-11-29 | High-brightness LED lamp and control circuit |
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| CN201310624775.1A CN103687212A (en) | 2013-11-29 | 2013-11-29 | High-brightness LED lamp and control circuit |
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| CN103687212A true CN103687212A (en) | 2014-03-26 |
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| CN202514139U (en) * | 2012-04-09 | 2012-10-31 | 青岛海信电器股份有限公司 | Backlight driving circuit and liquid crystal display |
| CN202634847U (en) * | 2012-07-02 | 2012-12-26 | 陕西科技大学 | LED (light emitting diode) microwave induction light modulator |
| CN103025009A (en) * | 2012-11-29 | 2013-04-03 | 余姚亿威电子科技有限公司 | Light-emitting diode (LED) driving control circuit |
| CN203082567U (en) * | 2013-01-16 | 2013-07-24 | 东莞金唐五金电器制造有限公司 | Charging type flashlight |
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2013
- 2013-11-29 CN CN201310624775.1A patent/CN103687212A/en active Pending
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201204724Y (en) * | 2008-04-15 | 2009-03-04 | 朱敬华 | Control circuit for high brightness LED lamp |
| CN101742766A (en) * | 2008-11-20 | 2010-06-16 | 深圳市桑达实业股份有限公司 | LED light dimming method and device |
| CN201830495U (en) * | 2010-06-02 | 2011-05-11 | 艾迪光电（杭州）有限公司 | Light dimming system with centralized control for light emitting diodes (LEDs) |
| CN202043335U (en) * | 2011-03-24 | 2011-11-16 | 深圳市三亮光电科技有限公司 | Energy-saving controller for LED lamp |
| CN202093785U (en) * | 2011-04-27 | 2011-12-28 | 海尔集团公司 | LCD display equipment using LED backlight |
| CN202172518U (en) * | 2011-08-04 | 2012-03-21 | 英飞特电子（杭州）有限公司 | Pulse width modulation burst dimming device |
| CN102438365A (en) * | 2011-10-20 | 2012-05-02 | 常州大学 | Program-controlled SCR (silicon controlled rectifier) high-power LED (light-emitting diode) high-efficiency power supply circuit |
| CN202514139U (en) * | 2012-04-09 | 2012-10-31 | 青岛海信电器股份有限公司 | Backlight driving circuit and liquid crystal display |
| CN202634847U (en) * | 2012-07-02 | 2012-12-26 | 陕西科技大学 | LED (light emitting diode) microwave induction light modulator |
| CN103025009A (en) * | 2012-11-29 | 2013-04-03 | 余姚亿威电子科技有限公司 | Light-emitting diode (LED) driving control circuit |
| CN203082567U (en) * | 2013-01-16 | 2013-07-24 | 东莞金唐五金电器制造有限公司 | Charging type flashlight |
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Application publication date: 20140326 |