Patent ID: 7188979
Filing Date: 2007-03-13
Classification: B60Q

Abstract:
1. An automatic vehicle headlight direction adjustment system comprising: steering angle detecting means for detecting a steering angle of a steering wheel of a vehicle, speed detecting means for detecting a speed of a vehicle, road information detecting means for detecting front road information from a navigation system mounted in a vehicle, estimated control quantity processing means for calculating an estimated control quantity for adjusting beam directions of headlights of a vehicle using as parameters the speed detected by the speed detecting means and the front road information detected by the road information detecting means, swivel advance control means for making the beam directions of the headlights swivel in left-right directions parallel to the horizontal direction for adjustment based on said estimated control quantity when said estimated control quantity processing means calculates said estimated control quantity before detection of said steering angle, running state determining means for determining if said vehicle is running straight or turning after adjustment of the beam directions of the headlights based on said estimated control quantity by said swivel advance control means has continued for a predetermined time, and swivel suspending means for suspending adjustment of the beam directions of the headlights based on said estimated control quantity when the beam directions of said headlights differ from the direction of advance of the vehicle if said running state determining means determines that said vehicle is running straight.