Vehicle headlamp

A technology for headlights and vehicles, which is applied in the direction of vehicle lighting systems, headlights, vehicle components, etc., and can solve the problem of not being able to fully increase the luminosity of the driving beam, and not being able to realize small, lightweight and low-cost actuators, and actuator drive Increased power and other problems, to achieve the effect of small size and light weight, low cost, and increased power consumption
CN1928422AInactive Publication Date: 2007-03-14KOITO MFG CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
KOITO MFG CO LTD
Publication Date
2007-03-14
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention provides a vehicle headlight with an actuator miniaturized and weight-saved and with luminance at irradiation effectively enhanced without adversely affecting on formation of a low-beam light distribution pattern, in a projector type one equipped with a movable shade. The vehicle headlight (10) is provided with a projection lens (11), a light source bulb (23), a reflector (25) reflecting direct light from the light source bulb (23) toward front, a movable shade (30), an actuator (20) moving the movable shade (30) between a shielding position and a shielding relaxation position. The movable shade (30) is installed in free rotation around a rotational axis line extended in a car width direction in the vicinity of a lens center axis (Ax), and the actuator (20) gives driving force to an end of a rod member (40) with the other end coupled with the movable shade (30) in a length direction through an operation direction changing mechanism (50) to rotate the movable shade.
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Description

technical field

[0001] The present invention relates to a vehicle headlamp, and more particularly, to a projection type vehicle headlamp having a variable light distribution function capable of changing the light distribution of the headlamp according to the running conditions of the vehicle. Background technique

[0002] Conventionally, there is known a projection-type vehicle headlamp having a lamp unit configured to transmit light (light source light) from a light source bulb arranged on an optical axis extending in the front-rear direction of the vehicle through a reflector. The reflection is converged towards the front and deflected to the optical axis, and the reflected light is irradiated to the front of the lamp through the projection lens arranged in front of the reflector.

[0003] In the case of such a projection lamp unit, a shading plate capable of shielding part of the reflected light from the reflector is usually provided between the projection lens and the re...

Claims

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