JPH0414301U

JPH0414301U -

Info

Publication number: JPH0414301U
Application number: JP5461090U
Authority: JP
Priority date: 1990-05-28
Filing date: 1990-05-28
Publication date: 1992-02-05

Description

[Brief explanation of the drawing]

第１図は本考案に係る車両用前照灯の１実施例
を示し、第１図Ａは導光板付近を描いた正面図、
第１図Ｂは模式的な水平断面図である。第２図は
従来例の車両用前照灯の水平断面図である。１……ランプハウジング、２……前面レンズ、
２ａ……レンズ有効部、２ｂ……レンズダミー部
、３……リフレクタ、３ａ……反射部、３ｂ……
リフレクタダミー部、４……光源バルブ、７……
導光板、７ａ……エツジ（光取入口）、７ｂ……
拡散用凹凸面、７ｃ……シボ加工面、７ｄ……反
射被膜。 FIG. 1 shows one embodiment of a vehicle headlamp according to the present invention, and FIG. 1A is a front view depicting the vicinity of the light guide plate;
FIG. 1B is a schematic horizontal sectional view. FIG. 2 is a horizontal sectional view of a conventional vehicle headlamp. 1...Lamp housing, 2...Front lens,
2a...Lens effective part, 2b...Lens dummy part, 3...Reflector, 3a...Reflection part, 3b...
Reflector dummy part, 4... Light source bulb, 7...
Light guide plate, 7a...edge (light intake), 7b...
Diffusion uneven surface, 7c... Textured surface, 7d... Reflective coating.

Claims

[Claims for Utility Model Registration] A front lens is attached to cover the front opening of the lamp housing, and a reflector is disposed in a space surrounded by the lamp housing and the front lens, and the reflector A light source bulb is disposed near the focal point, and the front lens has an effective portion through which the light beam emitted from the light source bulb and reflected by the reflector passes, and an effective portion through which the reflected light beam does not reach. A light guide plate having a dummy part and an edge part that receives a part of the light beam emitted from the light source bulb is disposed behind the front lens and in front of the reflector, and the light incident on the light guide plate is arranged in front of the reflector. A vehicle headlamp having a structure in which the light is totally reflected on the front side of the light guide plate, is reflected diagonally backward, and after the total reflection is repeated on the front and back sides of the light guide plate, the light is emitted toward the dummy part of the front lens. The light guide plate is provided with unevenness for diffusing the reflected light at a location where the incident light is first totally reflected, and minute unevenness is provided on the back side of the light guide plate, and
A vehicle headlamp characterized in that a reflective film is provided to cover the minute uneven surface.