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Headlamp for vehicle

一种前照灯、车辆的技术，应用在车辆照明系统、车头灯、道路车辆等方向，能够解决恶化、易变为高温等问题，达到缩短前后长度、实现结构紧凑化、增加利用光束的效果

Active Publication Date: 2007-02-28
KOITO MFG CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] However, when the surface shape of the reflection surface of the first additional reflection mirror is set to the shape of a spheroid as described above, the radiant heat from the light source is concentrated on the second focal point, and there is a second additional reflector near the second focal point. Reflectors are prone to high temperatures, and the undercoat layer of the vapor-deposited film that forms the reflective surface deteriorates early due to the influence of radiant heat from the light source

Method used

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Examples

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Embodiment Construction

[0078] Embodiments of the present invention will be described in detail below using the drawings.

[0079] FIG. 1 is a side sectional view showing a vehicle headlamp 10 according to an embodiment of the present invention.

[0080] As shown in FIG. 1 , the vehicle headlight 10 is a vehicle headlight installed on the right front end of the vehicle, and the lamp unit 20 having an optical axis Ax extending in the front-rear direction of the vehicle can be moved up and down by an alignment mechanism 50 . It is accommodated in a lamp chamber formed by a lamp body 12 and a transparent light-transmitting cover 14 mounted on the front end opening thereof so as to be tilted in the direction and left and right directions.

[0081] At a stage after the alignment adjustment by the alignment mechanism 50 is completed, the optical axis Ax of the lamp unit 20 extends in a downward direction of about 0.5-0.6° with respect to the vehicle front-rear direction.

[0082] 2 and 3 are side sectiona...

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Abstract

The headlamp has a projection lens (28) arranged on an optical axis extending in the longitudinal direction of a vehicle. A light source is arranged at a rear of a rear side focus of the projection lens, where the light source includes a linear light source extends in an axial direction of a light source bulb inserted and fixed to a main reflector from a side of the optical axis. A reflecting face of an addition reflector (36) is divided into multiple reflecting portions, where a surface shape of each reflecting portion is formed into an ellipsoid of revolution in a vertical direction.

Description

technical field [0001] The present invention relates to a so-called projection type vehicle headlamp, and more particularly to a vehicle headlamp configured to form a low beam light distribution pattern. Background technique [0002] In general, a projection type vehicle headlamp is configured by disposing a projection lens on an optical axis extending in the front-rear direction of the vehicle, and disposing a light source at a position rearward from its rear focal point, so that light from the The light from the light source is reflected by the reflector near the optical axis. At this time, in the vehicle headlamp for low beam, part of the reflected light from the reflector is shielded by the shade provided with the upper edge near the rear focal point of the projection lens. [0003] In Patent Document 1, a so-called side-inserted lamp structure is described in such a projection-type vehicle headlamp. A line-segment light source extending axially around the bulb. [00...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F21S8/10F21V13/12F21W101/02F21W107/10F21Y101/00
CPCF21S48/1364F21S48/1388F21S41/168F21S41/17F21S41/255F21S41/321F21S41/365F21S41/43F21S41/335
Inventor 木下雅夫
Owner KOITO MFG CO LTD
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