CN201555061U

CN201555061U - Manual dimming LED lamp

Info

Publication number: CN201555061U
Application number: CN2009202129628U
Authority: CN
Inventors: 茅于海
Original assignee: Individual
Current assignee: Individual
Priority date: 2009-12-11
Filing date: 2009-12-11
Publication date: 2010-08-18
Anticipated expiration: 2019-12-11

Abstract

The utility model provides a manual dimming LED lamp comprising an AC/DC switch power supply and an LED lamp, also comprising a DC/DC constant-current driving power supply, a pulse width modulation signal generator and a potentiometer, wherein the DC/DC constant-current driving power supply is connected with the AC/DC switch power supply and the LED lamp; the pulse width modulation signal generator is connected with the DC/DC constant-current driving power supply and generates the pulse width modulation signals and inputs the signals to the DC/DC constant-current driving power supply; and the potentiometer is connected with the pulse width modulation signal generator and controls the pulse width modulation signal generator through a control knob. By using the technical scheme in the fluorescent lamp, the electricity is further saved more than 10% based on electricity saving of 50% by adopting the common fluorescent lamp.

Description

Manual dimming LED (Light Emitting Diode) light fixture

Technical field

The utility model relates to a kind of LED light fixture, particularly relates to a kind of manual dimming LED fluorescent lamp.

Background technology

Existing LED fluorescent lamp mostly be greatly fixing can not light modulation, but in office or shop, market, often have window, sunlight also can enter into indoor.Outside sunlight enters indoorly when fine day, and indoor sight lamp just there is no need too bright, just requires the brightness of fluorescent lamp to regulate.

Existing common fluorescent lamp and LED fluorescent lamp all do not have light regulating technology, and existing incandescent lamp light modulation all is to adopt controllable silicon and load to connect to regulate, there is the high-tension electricity of 220VAC at the light-control knob place that this method causes can touching at staff, causes the danger of electric shock.And in circuit, produce easily and disturb.

The utility model content

The purpose of this utility model is exactly for the LED light fixture that can't regulate brightness originally being transform as the LED light fixture of manually light modulation.

The purpose of this utility model is achieved through the following technical solutions:

A kind of manual dimming LED fluorescent lamp 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 potentiometer, connect described pulse-duration modulation signal generator, be used for by control handle control pulse-duration modulation signal generator.

Described manual dimming LED fluorescent lamp 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 be realized the tunable optical of LED light fixture by adding the DC/DC constant-current driving power supply at common AC/DC switch constant voltage source.

But the utility model adopts the constant current drive source of impulse width modulation and light adjusting to power to LED, and circuit is simple.

The utility model adopts the low pressure PWM generator, can regulate pulsewidth with potentiometer, does not just have the 220V high pressure at the adjusting knob place like this, and has only the safe DC voltage below the 36V.

The utility model has been strengthened the driving force of pwm signal by connecting power driving circuit at the pwm signal generator output end, can accomplish that a manual control handle 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 another kind of LED fluorescent lamp of the present utility model.

The Reference numeral that relates among the figure is as follows:

100,200, the 300LED fluorescent lamp

10 incandescent lamps

12 controllable silicons

24,34 potentiometers

20,30 LED light fixtures

22,32 AC/DC Switching Power Supplies

25,35 control handles

26,36 DC/DC constant-current driving power supplies

28,38 pwm signal generators

29,39 power driving circuits

The specific embodiment

With reference to figure 1, incandescent lamp 10 in the LED fluorescent lamp 100 of the prior art is connected in series with controllable silicon dimmer 12, waveform by controllable silicon dimmer 12 control alternating currents, because must connect with load, so this method can only be controlled a load, and there is the high-tension electricity of 220VAC at the light-control knob place of the controllable silicon dimmer 12 that can touch at staff, causes the danger of electric shock.And in circuit, produce easily and disturb.

With reference to figure 2, adopted AC/DC Switching Power Supply 22 to drive according to the LED light fixture 20 in a kind of hand of the present utility model LED fluorescent lamp 200 with an automatic light meter, but between AC/DC Switching Power Supply 22 and LED light fixture 20, be coupled into a DC/DC tunable optical constant-current driving power supply 26, potentiometer 24 is by control handle 25 control pulsewidth modulation (PWM, Pulse Width Modulation) signal generator 28 produces pulsewidth modulation (PWM, Pulse Width Modulation) signal controlling DC/DC constant-current driving power supply 26 is with driving LED light fixture 20.

With reference to figure 3, also comprise LED light fixture 30 and AC/DC Switching Power Supply 32 according to the manual dimming LED fluorescent lamp 300 of another kind of the present utility model, also comprise in addition: DC/DC tunable optical constant-current driving power supply 36, connect described AC/DC Switching Power Supply 32 and LED light fixture 30, be used for driving LED light fixture 30; Pwm signal generator 38 connects described DC/DC tunable optical constant-current driving power supply 36, is used to produce pwm signal and it is inputed to DC/DC tunable optical constant-current driving power supply 36; And potentiometer 34, connect described pwm signal generator 38, be used for by a control handle 35 control pwm signal generators 38.Different is, the output of pwm signal generator 38 also can connect power driving circuit 39 in the present embodiment, the other end of this power driving circuit 39 connects described DC/DC constant-current driving power supply 36, can make at least two above LED light fixtures 30 of described pwm signal generator 38 controls like this, comprise the light fixture among the individual lamp unit kn of first lamp unit k1 and n (n 〉=2).

Prior art all adopted can not light modulation non-isolation and isolated constant-current driving power supply, thereby can't light modulation.The technical program has then adopted the tunable optical constant-current driving power supply of independent research, has solved the possibility problem of light modulation.Specifically, common LED sight lamp adopts non-isolation or separate AC/DC power supply, be difficult to the light modulation of realization, and the utility model has adopted the regular tap constant voltage source to add tunable optical DC/DC constant-current supply, just can be easy to realize impulse width modulation and light adjusting to LED.The utility model has adopted the pwm signal generator of low pressure to produce dim signal simultaneously, its power supply is from the AC/DC Switching Power Supply, just can change its pulsewidth with potentiometer, thereby reach the purpose that changes brightness, just do not have the 220V high pressure at the adjusting knob place like this, and have only the safe DC voltage below the 36V.The output of low pressure PWM generator adds power drive, thereby has improved its driving force, can control a lot of fluorescent lamps simultaneously by a control handle.

In current energy shortage, atmosphere warms under the situation, and 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, suitable economize on electricity 2,000,000,000 degree in these big cities, Shanghai, and common fluorescent lamp can't be realized any light modulation at all, if adopt manual light modulation, then can economize on electricity more than 10% again, 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

1. a manual dimming LED (Light Emitting Diode) light fixture comprises AC/DC Switching Power Supply and LED light fixture, it is characterized in that, described manual dimming LED (Light Emitting Diode) light fixture 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

Potentiometer connects described pulse-duration modulation signal generator, to control pulse-duration modulation signal generator by a control handle.

2. manual dimming LED (Light Emitting Diode) light fixture according to claim 1, it is characterized in that, described manual dimming LED fluorescent lamp 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.

3. manual dimming LED (Light Emitting Diode) light fixture according to claim 1 is characterized in that, LED light fixture of a described pulse-duration modulation signal generator control.

4. manual dimming LED fluorescent lamp according to claim 2 is characterized in that, a described pulse-duration modulation signal generator is controlled a plurality of LED light fixtures.