CN201373276Y

CN201373276Y - LED tube lamp

Info

Publication number: CN201373276Y
Application number: CN200920067883U
Authority: CN
Inventors: 黄梅坤; 丁祥珍
Original assignee: SHANGHAI LED SYSTEM TECHNOLOGY PTE LTD
Current assignee: Shanghai Led System Technology Pte.,Ltd.
Priority date: 2009-02-19
Filing date: 2009-02-19
Publication date: 2009-12-30
Anticipated expiration: 2019-02-19

Abstract

The utility model belongs to the field of light source technology, and more particularly relates to an LED tube lamp which comprises a lamp holder body, a lamp cover, a circuit board bracket and LED granules, wherein the lamp holder body takes on a cylinder barrel shape without a cover, and the bottom end of the barrel is provided with a ring-shaped step; the lamp cover takes on a circular ring shape, a transparent film, a light reflecting cover and an aluminium base plate are sequentially arranged between the lamp cover and the ring-shaped step, and the lamp cover is connected with the ring-shaped step by screws; the circuit board bracket is provided with a circuit board and a wire connecting terminal, and the circuit board is arranged inside the cylinder barrel and connected with a barrel hole of the lamp holder body by the circuit board bracket; the LED granules are positioned inside the light reflecting cover and fixedly connected with the aluminium base plate. As the LED tube lamp is added with the light reflecting cover and the aluminium base plate, the condensation effect and the heat dissipation condition of the LED lamp can be improved; furthermore, the LED tube lamp has simple structure and good using effect.

Description

The light emitting diode Down lamp

Technical field

The utility model belongs to light sources technical field, is specifically related to a kind of LED Down lamp.

Background technology

Down lamp with the visual performance mode of uniqueness and illuminating effect more and more widely in the application of decoration and exhibition industry, the lamp source that Down lamp adopted of prior art mostly is incandescent lamp, power saving fluorescent lamp.LED (light emitting diode) is as the solid state light emitter of novel concept, until scrapping almost completely without pollution, and can start moment from the production process to the use, and no stroboscopic belongs to cold light source, and fire safety does not have any noise, no ultraviolet radiation; Voltage is applied widely, and direct current exchanges all can; The colour rendering index height, the color that shows under the LED irradiation is true; Power consumption is extremely low, and power consumption only is 1/10 of conventional bulb, and but be tens of times and even hundreds of times of bulb service life, becomes in recent years one of new and high technology of the tool development prospect in the whole world.How good energy-conserving effect, LED lamp that illumination is high are used for Down lamp widely industry pay close attention to.But the problem that exists is a poor radiation, and cost is higher, and popularization is affected.

Summary of the invention

The purpose of this utility model is to provide a kind of spotlight effect and good, the simple in structure LED Down lamp of radiating condition.

The purpose of this utility model is achieved in that

A kind of LED Down lamp, it comprises lamp holder, light cover, circuit board support and LED particle, and described lamp holder is uncovered cylinder tubbiness, and the bucket bottom is provided with ring-shaped step; It is circular that light cover is, and is provided with light transmission piece, reflection shield, aluminium base between light cover and the ring-shaped step successively, and light cover is connected with ring-shaped step through screw; Circuit board support is provided with circuit board, binding post, and circuit board is located in the cylinder barrel and through circuit board support and is connected with the bung of lamp holder; The LED particle is positioned at reflection shield and fixedlys connected with aluminium base; Connect through lead between LED particle, circuit board, the binding post, and connect the LED particle by power supply driver, the light cover both sides are provided with jump ring.Concrete visible Fig. 1, Fig. 2 and Fig. 3.

The utility model has improved the spotlight effect and the radiating condition of LED lamp by setting up reflection shield, aluminium base etc.; It is simple in structure, and result of use is good.

Description of drawings

Fig. 1 is the utility model assembly drawing;

Fig. 2 is the utility model vertical view;

Fig. 3 is the utility model cutaway view;

Fig. 4 is the utility model power supply diagram;

Fig. 5 is an A district module circuit diagram among Fig. 4;

Fig. 6 is a B district module circuit diagram among Fig. 4;

Fig. 7 is a C district module circuit diagram among Fig. 4;

Fig. 8 is a D district module circuit diagram among Fig. 4;

Fig. 9 is an E district module circuit diagram among Fig. 4;

Figure 10 is a F district module circuit diagram among Fig. 4;

Figure 11 is the utility model drive principle figure.

Number in the figure 1 is a light cover, and 2 is bayonet socket, and 3 is diffuser, and 4 is reflector, and 5 is screw, 6 is the LED particle, and 7 is aluminium base, and 8 is lamp socket, and 9 is circuit board, and 10 is hex nut, 11 is circuit board support, 12 binding post supports, 13 binding posts, 14 ground strips, 15 threading sheaths.

The specific embodiment

Consult Fig. 1, Fig. 2 and Fig. 3, light cover 1 adopts the high-quality die casting aluminium, and bayonet socket 2 adopts the stainless steel shell fragment, and diffuser 3 adopts high-quality PC material, and aluminium base 7 adopts high thermal conductivity coefficient fine aluminium processing and fabricating.Connect power supply on binding post 14, when power connection, electric current makes LED particle 6 luminous through lead by binding post 14, circuit board 10; Because LED particle 6 is positioned at reflection shield 4, reflection shield 4 similar honeycombs, can form by 3-9 reflector, each reflector constitutes by the paraboloid of revolution, several (as 1-5) LED particles 6 are distributed in each reflector, and the light that LED particle 6 sent in each reflector is poly-for a branch of under paraboloidal effect, the light beam that several LED particles 6 sent are gathered be one, effectively prolong the irradiation distance of light beam, improved illumination; The LED particle 6 that is positioned at reflection shield 4 simultaneously is fixedly connected on the aluminium base 7, during work, the heat that LED particle 6 sends conducts to lamp socket 8 through aluminium base 7, and through the radiating ribs of the appearance of lamp socket 8 space towards periphery of loosing fast, the heat that LED particle 6 is produced is derived fast and effectively, has reduced light decay, has prolonged service life.

Power supply of the present utility model is seen shown in Figure 4, and it is made up of several modules such as A, B, C, D, E and F.Wherein, A district module is for forming the electromagnetic interface filter that Switching Power Supply exchanges input.The effect of B district module is that alternating current is transformed into direct current.C district module is that DC voltage is transformed into high-frequency pulse voltage, through transformer coupled transformation, transfers energy to outlet side again.D district module is to be transformed into the high-frequency pulse voltage after the transformer transformation required behind rectifying and wave-filtering.E district module is the voltage stabilizing part of VD, and the situation of change of output voltage is fed back to the PWM controller through photoelectrical coupler.F district module is PWM controller and peripheral auxiliary circuits thereof; it is the primary current signal of power supply feedback and the voltage signal of output dc voltage; after the reference signal inner with it compares; export a conducting situation that the variable signal of dutycycle removes the gauge tap pipe, with the protection of realization power supply and stablizing of output voltage.

Figure 11 is LED Down lamp drive principle figure.This circuit uses this chip as driving, makes the LED operate as normal, and efficient can reach 90%, and output current can reach 1A.

Claims

1, a kind of LED Down lamp is characterized in that it comprises lamp holder, light cover, circuit board support and LED particle, and described lamp holder is uncovered cylinder tubbiness, and the bucket bottom is provided with ring-shaped step; It is circular that light cover is, and is provided with light transmission piece, reflection shield, aluminium base between light cover and the ring-shaped step successively, and light cover is connected with ring-shaped step through screw; Circuit board support is provided with circuit board, binding post, and circuit board is located in the cylinder barrel and through circuit board support and is connected with the bung of lamp holder; The LED particle is positioned at reflection shield and fixedlys connected with aluminium base; Connect through lead between LED particle, circuit board, the binding post, and connect the LED particle by power supply driver, the light cover both sides are provided with jump ring.