JPH01179305U

JPH01179305U -

Info

Publication number: JPH01179305U
Application number: JP7569788U
Authority: JP
Priority date: 1988-06-07
Filing date: 1988-06-07
Publication date: 1989-12-22

Description

[Brief explanation of the drawing]

第１図乃至第３図は本考案車輌用前照灯の第１
の実施例を示すもので、第１図は概略斜視図、第
２図は双曲線―楕円複合反射面をｘ，ｙ，ｚ座標
で示すもので、Ａは斜視図、Ｂはｘ―ｙ平面図、
Ｃはｘ―ｚ平面図、第３図は配光パターン図、第
４図乃至第６図は本考案車輌用前照灯の第２の実
施例を示すもので、第４図は概略斜視図、第５図
は概略垂直断面図、第６図は配光パターン図、第
７図乃至第１０図は本考案車輌用前照灯の第３の
実施例を示すもので、第７図は概略斜視図、第８
図は概略水平断面図、第９図は概略垂直断面図、
第１０図は配光パターン図、第１１図乃至第１６
図は従来の車輌用前照灯の一例を示すもので、第
１１図は概略斜視図、第１２図は放物線―楕円複
合反射面をｘ，ｙ，ｚ座標で示すもので、Ａは斜
視図、Ｂはｘ―ｙ平面図、Ｃはｘ―ｚ平面図、第
１３図は配光パターン図、第１４図はレンズを示
す斜視図、第１５図は別のレンズを示す斜視図、
第１６図は配光パターン図である。符号の説明、１…車輌用前照灯、２…反射鏡、
３…双曲線―楕円複合反射面、４…光源、５…制
御用レンズ、７…車輌用前照灯、１０…車輌用前
照灯、１１…反射鏡、１２…光源、１４…制御用
レンズ、１５…反射鏡の中央部、１６…反射鏡の
左側部、１６′…反射鏡の右側部、１７，１７′
…放物線―楕円複合反射面、１８，１８′…双曲
線―楕円複合反射面、Ｆ_１…一方の焦点、Ｆ_２…
他方の焦点が位置する直線、Ｆ′_１…一方の焦点
、Ｆ′_２…他方の焦点が位置する直線。 Figures 1 to 3 show the first part of the vehicle headlight of the present invention.
Fig. 1 is a schematic perspective view, and Fig. 2 shows a hyperbolic-elliptic composite reflective surface in x, y, z coordinates, A is a perspective view, and B is an x-y plan view. ,
C is an xz plan view, FIG. 3 is a light distribution pattern diagram, FIGS. 4 to 6 show a second embodiment of the vehicle headlamp of the present invention, and FIG. 4 is a schematic perspective view. , FIG. 5 is a schematic vertical sectional view, FIG. 6 is a light distribution pattern diagram, and FIGS. 7 to 10 show a third embodiment of the vehicle headlamp of the present invention, and FIG. 7 is a schematic diagram. Perspective view, No. 8
The figure is a schematic horizontal sectional view, Figure 9 is a schematic vertical sectional view,
Figure 10 is a light distribution pattern diagram, Figures 11 to 16
The figures show an example of a conventional vehicle headlamp, where Fig. 11 is a schematic perspective view, Fig. 12 shows a parabolic-elliptical compound reflective surface in x, y, and z coordinates, and A is a perspective view. , B is an xy plan view, C is an xz plan view, FIG. 13 is a light distribution pattern diagram, FIG. 14 is a perspective view showing a lens, FIG. 15 is a perspective view showing another lens,
FIG. 16 is a light distribution pattern diagram. Explanation of symbols, 1...Vehicle headlight, 2...Reflector,
3...Hyperbolic-elliptical composite reflective surface, 4...Light source, 5...Control lens, 7...Vehicle headlight, 10...Vehicle headlight, 11...Reflector, 12...Light source, 14...Control lens, 15...Central part of the reflector, 16...Left side of the reflector, 16'...Right side of the reflector, 17, 17'
...Parabolic-elliptic composite reflective surface, 18,18'...Hyperbolic-elliptical composite reflective surface, F ₁ ...One focal point, F ₂ ...
A straight line where the other focal point is located, _F'1 ...one focal point, _F'2 ...a straight line where the other focal point is located.

Claims

[Claims for Utility Model Registration] (1) The shape of the ellipse is approximately hyperbola in the horizontal cross section and approximately elliptical in the vertical cross section, and one focal point of the ellipse is located on a straight line extending in the horizontal direction, and the other focal point is located on a straight line extending in the horizontal direction. A reflecting mirror having a hyperbolic-elliptic compound reflective surface, a light source located at one focal point of the ellipse, and a control lens located near the straight line where the other focal point of the ellipse is located. Vehicle headlights. (2) A straight line whose central part forms a parabola in the horizontal section and an ellipse in the vertical section, one focus of the ellipse and the focus of the parabola are located at a common point, and the other focus of the ellipse extends in the horizontal direction. It consists of a parabola-elliptic compound reflective surface located above, and the left and right sides consist of hyperbolic-elliptic compound reflective surfaces, and one focal point of the hyperbolic-elliptic compound reflective surface and one focal point of the parabolic-elliptic compound reflective surface are common. a reflector in which the other focal point of the hyperbolic-elliptical composite reflective surface and the other focal point of the parabolic-elliptic composite reflective surface are located on the same straight line; and a light source located at one focal point of the reflective mirror. A vehicle headlamp comprising: a control lens located near the straight line where the other focal point of the reflecting mirror is located.