Patent ID: 6302553
Filing Date: 2001-10-16
Classification: B60Q

Abstract:
A radiating direction control unit of a lighting device for vehicle use comprising:level detection means for detecting a change in a level of a vehicle axle section of one of a front and a rear wheel of a vehicle and for emitting a signal corresponding to the detected level change of the vehicle axle,inclined attitude detection means for detecting an inclination of the vehicle in a direction transverse to a longitudinal direction of the vehicle and for emitting a signal corresponding to the detected inclination of the vehicle; andcontrol means for determining a pitch angle of the vehicle based on the signal corresponding to the detected level change of the vehicle axle section and for correcting a radiating direction of the lighting device in accordance with the determined pitch angle and the detected inclination of the vehicle;wherein the control means corrects the radiating direction of the lighting device in accordance with the determined pitch angle only when a change in the inclination of the vehicle in the transverse direction is not detected by the inclined attitude detection means.