Apparatus for automatically adjusting direction of light axis of vehicle headlight

An apparatus for automatically adjusting a direction of a light axis of a vehicle headlight comprising:

• a steering angle sensor for detecting a steering angle of a steering wheel of a vehicle;
• a vehicle speed sensor for detecting a vehicle speed of said vehicle;
• a memory for storing a plurality of control maps each of which defining a relationship between said steering angle and a swiveling angle;
• a processing unit for performing a map switchover by which one of said plurality of said control maps is selected depending on said vehicle speed detected by said vehicle speed sensor and said steering angle detected by said steering angle sensor;
• and
• an actuator for swiveling, from an initial direction, said light axis of said vehicle headlight by said swiveling angle defined by one of said plurality of control maps selected by said processing unit;
• wherein said processing unit performs one of a smoothing process on said swiveling angle to be outputted to said actuator, a filtering process on said swiveling angle to be outputted to said actuator, and a delaying process on said steering angle detected by said steering angle sensor so that said swiveling angle outputted to said actuator changes gradually when said map switchover is performed by said processing unit.

An apparatus for automatically adjusting a direction of a light axis of a vehicle headlight comprising:

• a steering angle sensor for detecting a steering angle of a steering wheel of a vehicle;
• a vehicle speed sensor for detecting a vehicle speed of said vehicle;
• a memory for storing a plurality of control maps each of which defining a relationship between said steering angle and a swiveling angle;
• a processing unit for performing a map switchover by which one of said plurality of said control maps is selected depending on said vehicle speed detected by said vehicle speed sensor and said steering angle detected by said steering angle sensor;
• and
• an actuator for swiveling, from an initial direction, said light axis of said vehicle headlight by said swiveling angle defined by one of said plurality of control maps selected by said processing unit;
• wherein said processing unit, when performing said map switchover to shift said swiveling angle from a first value determined on the basis of one of said plurality of control maps having been used before said map switchover to a second value determined on the basis of one of said plurality of control maps to be used after said map switchover, temporarily sets said swiveling angle at a third value between said first value and said second value.