CN101614353B

CN101614353B - LED light emitting device and vehicle lamp

Info

Publication number: CN101614353B
Application number: CN2008101302925A
Authority: CN
Inventors: 许日滔; 赖俊清; 庄裕仁
Original assignee: Automotive Research and Testing Center
Current assignee: Automotive Research and Testing Center
Priority date: 2008-06-23
Filing date: 2008-06-23
Publication date: 2011-09-28
Anticipated expiration: 2028-06-23
Also published as: CN101614353A

Abstract

The invention relates to an LED light emitting device and a vehicle lamp, wherein the LED light emitting device comprises an LED light source, a reflection cover, a masking film and a projection lens, the LED light source comprises at least one LED element, the light emitting surface of the at least one LED element faces to the reflection cover, the reflection cover is covered outside the at least one LED element and contains a plurality of reflecting surfaces with different curvatures, the masking film is used for adjusting the rays converged from the reflecting surfaces into a preset light form, and the projection lens is used for outwards projecting the preset light form. The vehicle lamp comprises a plurality of LED light emitting devices. Through the LED light emitting device and the vehicle lamp, the leakage loss of light energy can be avoided, and the purposes of energy saving and environmental protection are achieved.

Description

LED light-emitting device and car light

Technical field

The invention relates to a kind of LED light-emitting device, refer to a kind of LED light-emitting device and LED car light especially, it can make more efficient use to luminous energy.

Background technology

Light emitting diode (LED) is owing to have characteristics such as power saving, volume is little, the life-span is long, so the application on lighting source more and more widely, the car light, indicator that for example are applied to automobile are Ji Brake car light etc.

Existing projection-type LED light-emitting device such as the I281971 number exposure of the Taiwan patent No. a kind of " projection-type LED car light " that is applied to car light, it mainly comprises a led light source, a reflector, a matte and a lampshade, the light-emitting area of this led light source up, and it is vertical with light direction, this reflector covers at the top of this led light source, so that the light of led light source is concentrated matte position ejaculation forwards, adjusting the light shape that meets rules whereby, and outwards throw away by the lampshade that is arranged at this matte the place ahead.

Yet, the reflector of above-mentioned existing LED light-emitting device only has the reflecting surface of single curvature, therefore only can collect led light source upwards and light forward, then often be difficult to collect and produce the phenomenon of leakage for backward light of part, and the reflecting surface of single curvature is difficult to make all light all can effectively converge on this matte, so will produce the loss of luminous energy and wasting phenomenon.

Summary of the invention

Because the design of existing its reflector of LED light-emitting device still have can improvement place, the object of the present invention is to provide a kind of LED light-emitting device and LED car light, it can be promoted the utilization of luminous energy and avoid waste.

For reaching the above object, LED light-emitting device of the present invention comprises:

One led light source includes two trapezoidal LED elements, and these two trapezoidal LED elements are arranged in opposite directions and are combined as a rectangle, the high-brightness LED element that each trapezoidal LED element is one 500 lumens, and the light-emitting area of this two LED element is towards a reflector;

This reflector, cover at this two LED element-external, and most reflectings surface that comprise each tool different curvature, the curvature of those most reflectings surface is discontinuous, at least respectively have top and the rear that a reflecting surface is positioned at this led light source in those most reflectings surface, the distance of those most reflectings surface and this two LED element is greater than 20 millimeters, and the reflecting surface that wherein is positioned at this led light source rear is a photoreactivation reflecting surface surplus in the of;

One matte is for being adjusted into a default light shape from the light that this majority reflecting surface converges; And

One projection lens outwards throwed for presetting light shape.

The attainable concrete effect of the present invention comprises:

1. the present invention makes the reflector of LED light-emitting device have the reflecting surface of at least two different curvature, photoreactivation reflecting surface surplus wherein a reflecting surface can be used as one, therefore the light backwards that this led light source sent can be subjected to the reflection of this surplus photoreactivation reflecting surface and be concentrated on the projection lens of the place ahead, avoid the leakage of luminous energy, and then reach the purpose of saving luminous energy, reduce cost and meet environmental protection.

2. the present invention further makes the LED light-emitting device utilize two trapezoidal high-brightness LED elements to be the combination of arranging in opposite directions, with the purpose of reaching heat radiation and the light shape and the Luminance Distribution that also can meet the auto bulb rules.

3. the present invention makes the reflector of LED light-emitting device have the reflecting surface of most different curvature, is concentrated on the matte of the place ahead in order to light is converged, and sees through projection lens and throw away, makes the light shape of its generation more meet the standard of rules.

Description of drawings

Fig. 1 is the stereogram of the preferred embodiment of LED light-emitting device of the present invention.

Fig. 2 is the three-dimensional exploded view of the preferred embodiment of LED light-emitting device of the present invention.

Fig. 3 is the side cutaway view of the preferred embodiment of LED light-emitting device of the present invention.

Fig. 4 is the preferred embodiment of LED light-emitting device of the present invention side cutaway view when luminous.

Fig. 5 is the stereogram of the preferred embodiment of LED car light of the present invention.

The main element label declaration

10, LED light-emitting device 11, pedestal 12, led light source

121, holder 122, LED element 13, reflector

131, first reflecting surface 132, second reflecting surface 14, projection lens

15, base 16, matte

The specific embodiment

Please refer to Fig. 1, Fig. 2 and shown in Figure 3, the LED light-emitting device 10 of preferred embodiment of the present invention comprises that a pedestal 11, is arranged at the matte 16 that base 15 and that projection lens 14, that reflector 13 and that led light source 12, on this pedestal 11 is arranged at the top of this led light source 12 and rear is arranged at these led light source 12 the place aheads is arranged at these pedestal 11 belows is arranged at 14 of this led light source 12 and this projection lens, wherein;

This pedestal 11 is square and its end face forms a recess;

This led light source 12 is fixedly arranged in the recess of this pedestal 11, this led light source 12 includes a holder 121 and at least one LED element 122, this holder 121 is fixedly arranged in the recess of this pedestal 11, this at least one LED element 122 be fixedly arranged on this holder 121 and its light-emitting area towards the top, this at least one LED element 122 can be two trapezoidal LED elements 122, these two trapezoidal LED elements 122 are the combination of arranging in opposite directions, this trapezoidal LED element 122 can be the high-brightness LED element 122 of one 500 lumens (1m), meets the light shape and the Luminance Distribution of auto bulb rules with formation;

This reflector 13 is arranged at the top of this at least one LED element 122 and rear and forms an opening in the place ahead of this at least one LED element 122, this reflector 13 comprises one first reflecting surface 131 and one second reflecting surface 132, this first reflecting surface 131 is positioned at the top of this at least one LED element 122, reflexed to matte 16 upper limbs in the place ahead with what will this at least one LED element 122 launch towards glazed thread, this second reflecting surface 132 is different with the curvature of these first reflecting surface, 131 connections and its curvature and first reflecting surface 131, this second reflecting surface 132 is positioned at the rear of this at least one LED element 122, with the light backwards will this at least one LED element 122 launched to front-reflection through matte 16 upper limbs to the place ahead projection lens 14, therefore this second reflecting surface 132 can collect leakage originally luminous energy and as photoreactivation reflecting surface surplus, also can make light can easilier converge at matte 16 upper limbs by the reflecting surface of different curvature, and can obtain preferable light shape; The distance of above-mentioned each reflecting surface and this at least one LED element 122 is greater than 20 millimeters.

This projection lens 14 is arranged at the place ahead of this reflector 13 and corresponding to the opening of this reflector 13, and with this reflector 13 suitable distance at interval, this projection lens 14 can be a non-spherical lens;

This base 15 is incorporated into the bottom surface of this pedestal 11, and the front side of this base 15 protrudes from the front side of this pedestal 11 and combines with this projection lens 14;

This matte 16 combines with the front side of this pedestal 11 and its apical margin is higher than this pedestal 11, and can bring into play the effect that changes bright dipping light shape.

Please refer to shown in Figure 4, since the LED light-emitting device 10 of preferred embodiment of the present invention make this reflector 13 form one surplus photoreactivation reflecting surface 132, therefore the light backwards that this led light source 12 sent can be subjected to the reflection of this surplus photoreactivation reflecting surface 132 and be concentrated to the place ahead, and then can avoid the waste of luminous energy and effective utilization of promotion luminous energy.

Please refer to shown in Figure 5ly, the preferred embodiment of a LED car light of the present invention can include most aforesaid LED light-emitting devices 10, whereby being combined as a large-sized car light, and can be applicable to the illumination and the indicator lamp purposes of automobile.

Claims

1. a LED light-emitting device is characterized in that, this LED light-emitting device comprises:

One matte is for being adjusted into a default light shape from the light that those most reflectings surface converge; And

One projection lens outwards throwed for presetting light shape.