Lighting systems for road vehicles专利检索-掩蔽信号信号信号处理专利检索查询-专利查询网

Lighting systems for road vehicles

阅读：499发布：2022-08-11

专利汇可以提供Lighting systems for road vehicles专利检索，专利查询，专利分析的服务。并且A lighting system for a road vehicle includes a member which is movable longitudinally to adjust the inclination of the beams of the headlamps relative to the vehicle. Sensing means is provided on the vehicle for sensing the attitude of the body of the vehicle relative to the ground, and a light source is movable in response to the signal received from the sensing means. A pair of light-sensitive devices are positioned side-by-side, and control operation of an actuating device for moving the headlampadjusting member. The headlamp-adjusting member carries a mask which is movable between the light-sensitive devices and the light source, and which, when the headlamps are correctly inclined for a given attitude of the body of the vehicle relative to the ground, masks both of the light-sensitive devices from the light source. When both of the light-sensitive devices are masked then the actuating device is inoperative. However, if the attitude of the body of the vehicle relative to the ground changes the light source is moved accordingly, and light falls on one or other of the light-sensitive devices. When light falls on one of the light-sensitive devices the actuating device is operated to move the headlamp-adjusting member to adjust the inclination of the headlamp beams in the correct direction so that the stable position is reestablished where the mask blocks light from falling on both of the light-sensitive devices.，下面是Lighting systems for road vehicles专利的具体信息内容。

权利要求

1. A lighting system for a road vehicle including headlamps, mounted for pivotal movement about generally horizontal axes on the body of the vehicle, sensing means for sensing the attitude of the body of the road vehicle relative to the ground, a light source, means coupling said light source to said sensing means whereby said light source is movable by said sensing means in response to changes in the attitude of the body of the vehicle relative to the ground, first and second light-sensitive devices positioned adjacent one another and aligned in a direction parallel to the direction in which said light source is moved by said sensing means, a member coupled to said headlamps, movable in a direction parallel to the direction of movement of said light source whereby movement of said member causes adjustment of the inclination of the beams of the headlamps by pIvoting the headlamps about said horizontal axes, a mask carried by said member and positioned between said light source and said first and second light-sensitive devices, actuating means, said actuating means being operable under the control of said first and second light-sensitive devices, and, means coupling said actuating means to said member so that operation of said actuating means causes movement of said member to adjust the inclination of the beams of said headlamps, the arrangement being such that when said headlamps beams are correctly inclined for a given attitude of the vehicle body, said mask is in a position masking both of said first and second light-sensitive devices from said light source so that said actuating means is inoperative, whereas if the inclination of said headlamp beams is too high or too low for a given attitude of the vehicle body, then one or other of said first and second light-sensitive devices will be exposed to said light source causing said actuating means to be operated to move said member to reestablish the correct inclination of the headlamp beams.

2. A system as claimed in claim 1 wherein said movable light source is constituted by an aperture in a plate movable relative to a fixed light-emitting device, light from said device passing through said aperture in use.

3. A system as claimed in claim 1 wherein said sensing means includes a first rheostat operable in response to variation in the position of the front of the vehicle relative to the ground and a second rheostat operable in response to variations in the position of the rear of the vehicle relative to the ground, the rheostats controlling movement of said light source.

4. A system as claimed in claim 3 wherein said first and second rheostats control the heating current supplied to heater windings associated with first and second bimetallic elements respectively, said bimetallic elements controlling movement of said light source.

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Lighting systems for road vehicles

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