JPH0421006U

JPH0421006U -

Info

Publication number: JPH0421006U
Application number: JP6136090U
Authority: JP
Priority date: 1990-06-12
Filing date: 1990-06-12
Publication date: 1992-02-21

Description

[Brief explanation of drawings]

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、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、４ｅ〜４ｇ
……舌片状の突起、５……ソケツト、１１……メ
インリフレクタ、１３，１３′……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, in which FIG. 3A is a front view of the reflector, FIG. 3B is a sectional view taken along line B'-B', and FIG. 4 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. 7th
Figure A is a rear view of the light source bulb rotated and attached to the socket, Figure B is a side view, and Figure C is the same.
is a light distribution pattern diagram. 8A is a rear view of the light source bulb rotated and raised further and attached to the socket, FIG. 8B is a side view, and FIG. 8C 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, 4e-4g
... tongue-shaped projection, 5 ... socket, 11 ... main reflector, 13, 13' ... 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 The main reflector has a focal point located near the sub-filament, and the sub-reflector has a focal point near the sub-filament, and the main reflector and the sub-reflector share an optical axis, and the shade is , characterized in that the mounting orientation of the light source bulb is set so that it is located directly below the subfilament and is symmetrical,
Car headlights.