CN201651825U - Photosensitive automatic dimming LED lamp - Google Patents

Photosensitive automatic dimming LED lamp Download PDF

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Publication number
CN201651825U
CN201651825U CN2009202129613U CN200920212961U CN201651825U CN 201651825 U CN201651825 U CN 201651825U CN 2009202129613 U CN2009202129613 U CN 2009202129613U CN 200920212961 U CN200920212961 U CN 200920212961U CN 201651825 U CN201651825 U CN 201651825U
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CN
China
Prior art keywords
power supply
led light
constant
signal generator
light fixture
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Expired - Fee Related
Application number
CN2009202129613U
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Chinese (zh)
Inventor
茅于海
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茅于海
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Priority to CN2009202129613U priority Critical patent/CN201651825U/en
Application granted granted Critical
Publication of CN201651825U publication Critical patent/CN201651825U/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Abstract

The utility model provides a photosensitive automatic dimming LED lamp comprising an AC/DC switching power supply, an LED lamp as well as a DC/DC constant-current driving power supply, a pulse width modulating signal generator and a photosensitive element, wherein the DC/DC constant-current driving power supply is connected with the AC/DC switching power supply and the LED lamp; the pulse width modulating signal generator is connected with the DC/DC constant-current driving power supply and is used for generating pulse width modulating signals and inputting the pulse width modulating signals to the DC/DC constant-current driving power supply; and the photosensitive element is connected with the pulse width modulating signal generator. When used for fluorescent lamps, compared with the common fluorescent lamps saving electricity of 50%, the photosensitive automatic dimming LED lamp can also save the electricity above 10% on the basis.

Description

Photosensitive LED light fixture with an automatic light meter
Technical field
The utility model relates to a kind of LED fluorescent lamp, particularly relates to a kind of photosensitive LED light fixture with an automatic light meter.
Background technology
Existing common fluorescent lamp and LED fluorescent lamp mostly be greatly fixing can not light modulation, but in family, office, shop, market, often have window, sunlight also can enter into indoor.Outside sunlight enters indoorly when fine day, and indoor fluorescent lamp just there is no need too bright, and just requiring can light modulation, and preferably automatic photosensitive light modulation.But existing common fluorescent lamp and LED fluorescent lamp can not carry out any light modulation.
The utility model content
The purpose of this utility model is exactly for common fluorescent lamp that originally can't light modulation and energy-saving LED fluorescent lamp being transform as novel LED fluorescent lamp that can photosensitive light modulation, thereby reaches purpose of energy saving.
The purpose of this utility model is achieved through the following technical solutions:
A kind of photosensitive LED light fixture with an automatic light meter comprises AC/DC Switching Power Supply and LED light fixture, also comprises in addition: the DC/DC constant-current driving power supply, connect described AC/DC Switching Power Supply and LED light fixture, and be used for the driving LED light fixture; Pulse-duration modulation signal generator connects described DC/DC constant-current driving power supply, is used to produce pulse-width signal and it is inputed to the DC/DC constant-current driving power supply; And light-sensitive element, connect described pulse-duration modulation signal generator, be used for sensitive context brightness.
Described pwm signal generator can be a single-chip microcomputer, also can be general pwm generator.
A described light-sensitive element can be controlled the LED light fixture of a plurality of band tunable optical constant current drive sources.
Perhaps pwm generator of being controlled by light-sensitive element can be controlled the LED light fixture of a plurality of band tunable optical constant current drive sources.
Described photosensitive LED light fixture with an automatic light meter also comprises power driving circuit, and this power driving circuit one end is connected in the pulse-duration modulation signal generator output, and the other end is connected in described DC/DC constant-current driving power supply.A described pulse-duration modulation signal generator not only can be controlled a LED light fixture, also can control a plurality of LED light fixtures simultaneously.
The utility model can dim the LED fluorescent lamp when fine day by adopting light-sensitive element sensitization, so just can be further energy-conservation.
The utility model can be realized the tunable optical of LED fluorescent lamp by adding the DC/DC constant-current driving power supply at the regular tap constant voltage source.
The utility model is regulated brightness by adopting the pwm signal generator, and circuit is simple.
The utility model delivers to single-chip microcomputer by the signal that light-sensitive element is obtained or pulse-duration modulation signal generator produces corresponding impulse width modulation and light adjusting signal, can increase the flexibility of control, for example in the future can increase time control, become the time switch lamp, and can avoid the skew of LED colour temperature.
The utility model is by strengthening the driving force of pulse-width signal, can accomplish that a light-sensitive element controls a plurality of LED light fixtures, a plurality of LED are carried out light modulation, thereby improve control ability.
Below in conjunction with accompanying drawing enforcement of the present utility model and advantage are further explained.
Description of drawings
Fig. 1 is the structural representation of LED fluorescent lamp of the prior art;
Fig. 2 is the structural representation according to a kind of LED fluorescent lamp of the present utility model
Fig. 3 is the structural representation according to a kind of manual dimming LED (Light Emitting Diode) light fixture of the present utility model.
The Reference numeral that relates among the figure is as follows:
100,200,300 LED lamps, 11,21,31 LED light fixtures
12,22,32 AC/DC Switching Power Supplies, 23,33 DC/DC constant-current driving power supplies
24,34 pwm signal generators, 25,35 light-sensitive elements
The specific embodiment
With reference to figure 1, the LED light fixture 11 in the LED fluorescent lamp 100 of the prior art adopts non-isolation or separate AC/DC Switching Power Supply 12 to drive, and is difficult to the light modulation of realization to LED like this.
With reference to figure 2, still adopt AC/DC Switching Power Supply 22 to drive according to the LED light fixture 21 in a kind of photosensitive LED light fixture 200 with an automatic light meter of the present utility model, but between AC/DC Switching Power Supply 22 and LED light fixture 21, insert a tunable optical DC/DC constant-current driving power supply 23, light-sensitive element 25 sensitive context brightness and by pulsewidth modulation (PWM, Pulse Width Modulation) signal generator 24 is handled the back and is produced pulsewidth modulation (PWM, Pulse Width Modulation) signal, this pwm signal are controlled 23 pairs of LED light fixtures of described DC/DC constant-current driving power supply 21 and are carried out the PWM light modulation.After adopting common AC/DC switch constant voltage source to add DC/DC tunable optical constant-current supply in this scheme, just can be easy to realize pulsewidth modulation (PWM, Pulse Width Modulation) light modulation.
With reference to figure 3, also comprise LED light fixture 31 and AC/DC Switching Power Supply 32 according to the manual dimming LED (Light Emitting Diode) light fixture 300 of another kind of the present utility model, also comprise in addition: tunable optical DC/DC constant-current driving power supply 33, connect described AC/DC Switching Power Supply 32 and LED light fixture 31, be used for driving LED light fixture 31; Pwm signal generator 34 connects described DC/DC constant-current driving power supply 33, to produce pwm signal and it is inputed to DC/DC constant-current driving power supply 33; Power driving circuit circuit 36, one ends are connected in pulse-duration modulation signal generator 34 outputs, and the other end is connected in described DC/DC constant-current driving power supply 33; And light-sensitive element 25, connecting described pwm signal generator, sensitive context brightness is also handled the back by pwm signal generator 34 and is produced pulse-width signals.Present embodiment can make at least two LED light fixtures 30 of a potentiometer 34 controls, comprises first lamp unit k 1With the light fixture among the individual lamp unit kn of n (n 〉=2).
In an embodiment of the present utility model, described pwm signal generator can adopt general pwm signal generator, also can adopt single-chip microcomputer, adopts the monolithic function to increase flexibility, for example in the future also can increase time control, as regularly lighten, time switch lamp etc.
In another embodiment of the present utility model, a described light-sensitive element can be controlled the LED light fixture of a plurality of band tunable optical constant current drive sources, improve the driving force of control signal like this, can accomplish that a light-sensitive element controls a plurality of LED light fixtures, thereby improved the ability of control.In another embodiment of the present utility model, a pwm signal generator of being controlled by light-sensitive element can be controlled the LED light fixture of a plurality of band tunable optical constant current drive sources.
The utility model has adopted photosensitive technology with an automatic light meter, adopts this technology just can dim the LED fluorescent lamp when fine day later, so just can be further energy-conservation.And in LED light modulation of the present utility model, adopted the light-dimming method light modulation of PWM, and adopt after the PWM light modulation, can also avoid the skew of LED colour temperature.
Warm at current atmosphere, under the energy shortage situation, further energy-conservation is the task of top priority.China's electric consumption on lighting amount accounts for 20% of total electricity consumption, and wherein indoor electric weight accounts for 10%, and fluorescent lamp account for wherein 70% to 80%, the fluorescent lamp of South China is nearly 5,000,000,000 according to statistics, hundred million of the nearly 50-100 in East China.If all adopt the LED fluorescent lamp, can economize on electricity 50%, in Beijing, these big cities, Shanghai 2,000,000,000 degree electricity that are equivalent to economize on electricity,, then can economize on electricity again more than 10% again if adopt photosensitive light modulation, be equivalent to 200,000,000 degree electricity, its economic effect is very surprising.
Should be noted that in addition; the above only is a preferred implementation of the present utility model; and go for various LED light fixtures and be not limited to the LED fluorescent lamp; for those skilled in the art; under the prerequisite that does not break away from the utility model design; can also make some improvements and modifications, these improvements and modifications also should be considered as protection domain of the present utility model.

Claims (5)

1. a photosensitive LED light fixture with an automatic light meter comprises AC/DC Switching Power Supply and LED light fixture, it is characterized in that, described photosensitive LED light fixture with an automatic light meter also comprises:
The DC/DC constant-current driving power supply connects described AC/DC Switching Power Supply and LED light fixture;
Pulse-duration modulation signal generator connects described DC/DC constant-current driving power supply, and it produces pulse-width signal and it is inputed to the DC/DC constant-current driving power supply; And
Light-sensitive element connects described pulse-duration modulation signal generator.
2. photosensitive LED light fixture with an automatic light meter according to claim 1 is characterized in that described pulse-duration modulation signal generator is a single-chip microcomputer.
3. photosensitive LED light fixture with an automatic light meter according to claim 1 is characterized in that a described light-sensitive element can be controlled a plurality of LED light fixtures.
4. photosensitive LED light fixture with an automatic light meter according to claim 1 is characterized in that, a pulse-duration modulation signal generator of being controlled by light-sensitive element can be controlled a plurality of tunable optical constant current drive sources.
5. photosensitive LED light fixture with an automatic light meter according to claim 1, it is characterized in that, described photosensitive LED light fixture with an automatic light meter also comprises power driving circuit, and this power driving circuit one end is connected in the pulse-duration modulation signal generator output, and the other end is connected in described DC/DC constant-current driving power supply.
CN2009202129613U 2009-12-11 2009-12-11 Photosensitive automatic dimming LED lamp Expired - Fee Related CN201651825U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2009202129613U CN201651825U (en) 2009-12-11 2009-12-11 Photosensitive automatic dimming LED lamp

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2009202129613U CN201651825U (en) 2009-12-11 2009-12-11 Photosensitive automatic dimming LED lamp

Publications (1)

Publication Number Publication Date
CN201651825U true CN201651825U (en) 2010-11-24

Family

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CN2009202129613U Expired - Fee Related CN201651825U (en) 2009-12-11 2009-12-11 Photosensitive automatic dimming LED lamp

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CN (1) CN201651825U (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107872907A (en) * 2017-09-21 2018-04-03 国网上海市电力公司 A kind of intelligent transformer station illumination system
CN108012368A (en) * 2017-07-18 2018-05-08 宁波方太厨具有限公司 A kind of PWM light-dimming methods of LED
CN108156690A (en) * 2016-12-06 2018-06-12 赤多尼科两合股份有限公司 A kind of LED light-dimming methods and system based on ambient brightness

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108156690A (en) * 2016-12-06 2018-06-12 赤多尼科两合股份有限公司 A kind of LED light-dimming methods and system based on ambient brightness
WO2018103591A1 (en) * 2016-12-06 2018-06-14 赤多尼科两合股份有限公司 Ambient brightness-based led adjustment method and system
CN108156690B (en) * 2016-12-06 2020-06-19 赤多尼科两合股份有限公司 LED dimming method and system based on ambient brightness
CN108012368A (en) * 2017-07-18 2018-05-08 宁波方太厨具有限公司 A kind of PWM light-dimming methods of LED
CN108012368B (en) * 2017-07-18 2019-09-20 宁波方太厨具有限公司 A kind of PWM light-dimming method of LED
CN107872907A (en) * 2017-09-21 2018-04-03 国网上海市电力公司 A kind of intelligent transformer station illumination system

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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: 20101124

Termination date: 20111211