JPH0424205U

JPH0424205U -

Info

Publication number: JPH0424205U
Application number: JP6442390U
Authority: JP
Priority date: 1990-06-20
Filing date: 1990-06-20
Publication date: 1992-02-27

Description

[Brief explanation of the drawing]

第１図および第２図は本考案に係る自動車用前
照灯の一実施例を示し、第１図Ａはリフレクタの
正面図、同図ＢはそのＢ−Ｂ断面図、第２図はリ
フレクタの斜視図である。第３図および第４図は
上記と異なる実施例を示し、第３図Ａはリフレク
タの正面図、同図ＢはそのＢ′−Ｂ′断面図、同
図Ｃは配光パターン図表、第４図はリフレクタの
斜視図である。第５図は従来例の自動車用前照灯
を示し、同図Ａは垂直縦断面図、同図Ｂは光源バ
ルブの斜視図である。第６図Ａないし第１０図は
本考案の作用の説明図であつて、第６図Ａは光源
バルブを従来技術に従つてソケツトに装着した状
態の背面図、同図Ｂは同じく側面図、同図Ｃは配
光パターン図表である。第７図Ａは光源バルブを
回動させてソケツトに装着した状態の背面図、同
図Ｂは同じく側面図、同図Ｃは配光パターン図表
である。第８図Ａは光源バルブを回動させ、さら
に上昇させてソケツトに装着した状態の背面図、
同図Ｂは同じく側面図、同図Ｃは配光パターン図
表である。第９図はメインリフレクタの作用を示
し、同図Ａは配光パターン図表、同図Ｂは光路図
である。第１０図はサブリフレクタの作用を示し
、同図Ａは配光パターン図表、同図Ｂは光路図で
ある。１……ランプハウジング、２……リフレクタ、
３……前面レンズ、４……光源バルブ、４ａ……
管球、４ｂ……メインフイラメント、４ｃ……サ
ブフイラメント、４ｄ……シエード、４ｃ〜４ｇ
……舌片状の突起、５……ソケツト、１１……メ
インリフレクタ、１３，１３′，１３ｄ，１３ｅ
，１３ｆ……サブリフレクタ、１４，１５……リ
フレクタ。 1 and 2 show an embodiment of an automobile headlamp according to the present invention, FIG. 1A is a front view of a reflector, FIG. 1B is a sectional view taken along line B-B, and FIG. FIG. 3 and 4 show an embodiment different from the above, FIG. 3A is a front view of the reflector, FIG. 3B is a sectional view taken along line B'-B', and FIG. The figure is a perspective view of the reflector. FIG. 5 shows a conventional automobile headlamp, in which FIG. 5A is a vertical cross-sectional view and FIG. 5B is a perspective view of the light source bulb. 6A to 10 are explanatory diagrams of the operation of the present invention, in which FIG. 6A is a rear view of the light source bulb installed in the socket according to the prior art, FIG. 6B is a side view, C in the figure is a light distribution pattern chart. FIG. 7A is a rear view of the light source bulb rotated and attached to the socket, FIG. 7B is a side view, and FIG. 7C is a light distribution pattern chart. Figure 8A is a rear view of the light source bulb rotated, raised further, and attached to the socket;
Figure B is a side view, and Figure C is a light distribution pattern chart. FIG. 9 shows the action of the main reflector, where A is a light distribution pattern diagram and FIG. 9B is an optical path diagram. FIG. 10 shows the action of the sub-reflector, with FIG. 10A being a light distribution pattern diagram and FIG. 10B being an optical path diagram. 1...Lamp housing, 2...Reflector,
3...Front lens, 4...Light source bulb, 4a...
Tube, 4b...main filament, 4c...subfilament, 4d...shade, 4c to 4g
... tongue-shaped projection, 5 ... socket, 11 ... main reflector, 13, 13', 13d, 13e
, 13f... sub-reflector, 14, 15... reflector.

Claims

[Claims for Utility Model Registration] A reflector having a paraboloid of revolution reflective surface;
An automobile headlamp comprising: a light source bulb having a main filament for a running beam and a subfilament for a passing beam arranged in a straight line; and a shade that covers a lower part of the subfilament, wherein the main filament It is equipped with a main reflector and a sub-reflector whose focal points are located close to each other, and the optical axis of the main reflector and the optical axis of the sub-reflector intersect at a common focal point, and the shade is located at the center of the sub-filament. The light source bulb is installed in a position such that it is located directly below and is symmetrical.
Car headlights.