CN201008221Y

CN201008221Y - High-brightness, high efficiency LED lamp

Info

Publication number: CN201008221Y
Application number: CNU2007200785163U
Authority: CN
Inventors: 王晶
Original assignee: Individual
Current assignee: Individual
Priority date: 2007-02-12
Filing date: 2007-02-12
Publication date: 2008-01-16
Anticipated expiration: 2017-02-12

Abstract

The utility model relates to an LED lamp with high brightness and high efficiency, which comprises a battery B, a thick film integrated circuit IC, an electrolytic condenser C1, C2, a power switch K1,a light dimming switch K2 and an LED lamp. The thick film integrated circuit IC is composed of a switch-typed DC-DC converting circuit and constant current circuit, the input end and the output end of the thick film integrated circuit IC are connected respectively with an electrolytic condenser. A battery is serially connected with a power switch, and then the battery is connected with the electrolytic condenser of the input end in parallel. The controlled LED lamp is connected with the output end in parallel. The threshold selection terminal of the thick film integrated circuit IC which controls the intensity of the controlled LED light is relative to the light dimming switch K2. In order to further solve the radiating problem of a high power luminous diode, a layer of heat conducting silicon gel is painted on the bottom surface of the heat radiating chip arranged on the luminous diode, the bottom surface of heat radiating chip of the luminous diode is closely connected with the cylindrical metal heating body. The self-made thick film integrated circuit IC of the utility model is employed, thereby greatly increasing the drive efficiency of the LED lamp, and simultaneously widening the input voltage range of the LED lamp.

Description

High brightness, high-efficiency LED lamp

Technical field

The utility model relates to a kind of LED lamp, particularly a kind of high brightness, high-efficiency LED lamp.

Background technology

Last century end, the appearance of white high brightness and superhigh brightness LED (LED) is the once breakthrough progress of photoelectric technology.Because little, the power consumptive province of its volume, long advantages such as (being tens of times that ordinary incandescent lamp runs) of life-span have begun to be widely used on the various alternating current-direct current light fixtures.But because the driving particularity of light-emitting diode, in the field of battery-powered various light fixtures, as flashlight, mine lamp, wear-type LED lamp ... or the like the aspect also generally do not promoted.

As everyone knows, the driving of LED is different fully with the driving of incandescent lamp bulb, in case after the conducting of LED pipe, its electric current rises with voltage and increases suddenly, such as, LED pipe electric current just about 20mA when 3.0V, and voltage when increasing to 3.7V electric current sharply increase to 800mA.The voltage 0.7V that risen causes electric current to rise 40 times! Therefore, drive at the LED lamp, particularly the great power LED pipe drives and must add current-limiting circuit, is to guarantee that the brightness of LED lamp is constant to guarantee voltage fluctuation.Prior art is to adopt analog constant-current circuit, though sort circuit can be exported in constant current, itself also will consume about 50% energy, and this makes the energy-efficient advantage of light-emitting diode have a greatly reduced quality.

Summary of the invention

The purpose of this utility model is fundamentally to solve the driving problems that above-mentioned light-emitting diode exists, and a kind of light fixture various occasions, that can substitute the light-emitting diode of common bulb fully that is particularly suitable for being long-term used in is provided.

The utility model is a kind of high brightness, the high-efficiency LED lamp, it is characterized in that by battery, special-purpose thick film integrated circuit, electrolytic capacitor, mains switch, dimmer switch and light-emitting diode constitute, described special-purpose thick film circuit is an integrated circuit of being made up of switching mode DC-DC translation circuit and constant-current circuit, the input of this integrated package and out-put supply end are connected with electrolytic capacitor respectively, battery and mains switch series connection back are in parallel with the input electrolytic capacitor, output be subjected to controlled LED lamp in parallel, the gear of thick film circuit IC control LED intensity of light is selected terminal and dimmer switch K ₂Corresponding.

Because homemade thick film integrated circuit has adopted in the utility model switching regulator constant-current circuit, making the LED lamp drive efficient improves greatly, bring up to about 80% by common less than 50%, thoroughly solved a great problem that the LED lamp is applied in enormous quantities, meanwhile, input of supply voltage wide region and constant current control have also been solved, the feasible non-constant width of input voltage of using LED lamp of the present utility model is brought up to 15V (10 joint common batteries) from 1.2V (a joint nickel-hydrogen chargeable cell).

Because large-power light-emitting diodes (more than the 1W) has many energy still to convert heat to, therefore, the heat radiation of large-power light-emitting diodes just becomes pays a difficult problem that overcomes.Heat dissipation problem for the large-power light-emitting diodes that solves high brightness, high-efficiency LED lamp, the utility model is by bottom surface and cylindrical metal radiator close proximity with the large-power light-emitting diodes fin, and the measure that applies one deck heat conductive silica gel in the bottom surface of LED heat radiating sheet reaches a solution of a problem.

The utility model has solved the heat dissipation problem of large-power light-emitting diodes preferably, and the operational environment of large-power light-emitting diodes is well improved, thereby can increase the continuous service time of light fixture greatly, has also prolonged the useful life of light-emitting diode greatly.

Description of drawings

Fig. 1 is the Drive and Control Circuit figure of the utility model high brightness, high-efficiency LED lamp

Fig. 2 is a self-control thick film circuit internal structure schematic diagram

Fig. 3 is large-power light-emitting diodes and the close-connected cross-sectional view of cylindrical metal radiator

Embodiment

Embodiment 1

As shown in Figure 1, this high brightness, high-efficiency LED lamp are by battery B, special-purpose thick film circuit IC, electrolytic capacitor C ₁, mains switch K ₁, dimmer switch K ₂Constitute with the LED pipe, the input of this ic chip is connected with electrolytic capacitor respectively with the out-put supply end, and wherein, input terminal 1 is connected with electrolytic capacitor C ₁, battery B and mains switch K ₁Series connection back and input electrolytic capacitor C ₁Parallel connection is subjected to controlled LED lamp to be attempted by output 7,8, out-put supply end 2 and electrolytic capacitor C ₂Connect; 3 pin are earth terminal, are connected with the negative pole of battery B and electrolytic capacitor; The gear of thick film circuit IC control LED intensity of light select terminal 4,5,6 respectively with dimmer switch K ₂Correspondence provides different output currents by IC, regulates the different luminous intensity of LED lamp emission.

Special-purpose thick film circuit IC is an integrated package of being made up of switching mode DC-DC translation circuit and constant-current circuit as shown in Figure 2.The left side is pump circuit PP, realizes the boost function of DC-DC, and the right side is constant-current circuit CC.This thick film circuit IC not only makes LED lamp driving efficient improve greatly, simultaneously, makes the input voltage range of LED lamp very wide.

Among Fig. 3, the fin 1 of high-powered LED lamp 4 is identical with cylindrical heat-conducting metal body 3 areas, coating one deck heat conductive silica gel 2 on the fin 1 of LED lamp 4, the heat that the excess energy gathered on the high-powered LED lamp 4 is changed into is directly delivered on the cylindrical heat-conducting metal body 3 by heat conductive silica gel 2, heat on the high-powered LED lamp is in time lowered the temperature, thereby increase the continuous service time of light fixture greatly, also prolonged the useful life of light-emitting diode greatly.

Claims

1. a high brightness, high-efficiency LED lamp is characterized in that by battery B, special-purpose thick film circuit IC, electrolytic capacitor C ₁, C ₂, mains switch K ₁, dimmer switch K ₂Constitute with the LED lamp, described special-purpose thick film circuit IC is an integrated package of being made up of switching mode DC-DC translation circuit and constant-current circuit, the input of this integrated package and out-put supply end are connected with electrolytic capacitor respectively, battery and mains switch series connection back are in parallel with the input electrolytic capacitor, output be subjected to controlled LED lamp in parallel, the gear of thick film circuit IC control LED intensity of light is selected terminal and dimmer switch K ₂Corresponding.

2. high brightness according to claim 1, high-efficiency LED lamp, it is characterized in that when the LED lamp is large-power light-emitting diodes, the bottom surface of its fin and cylindrical metal radiator close proximity, the coated on bottom side of LED heat radiating sheet is covered with one deck heat conductive silica gel.