초록 ▼

A radiating direction control unit 1 of a lighting device for a vehicle for controlling a radiating direction of the lighting device 6 in accordance with the pitch angle of the vehicle. The radiation direction control unit includes an axle level detector 2 which detects a change in the level of a fr

A radiating direction control unit 1 of a lighting device for a vehicle for controlling a radiating direction of the lighting device 6 in accordance with the pitch angle of the vehicle. The radiation direction control unit includes an axle level detector 2 which detects a change in the level of a front or a rear axle of the vehicle, and a vehicle inclination detector 3 for detecting an inclination of the vehicle in the transverse direction. A pitch angle of the vehicle is determined based on respective signals emitted by the axle level detector and the vehicle inclination detector. A radiation direction controller corrects a radiating direction of the lighting device only when a change in the inclination of the vehicle in the transverse direction is not detected by the inclined attitude detection means 3. Accordingly, the radiating direction of the lighting device 6 is not changed due to a change in the vehicle attitude which does not affect the pitch angle of the vehicle.

대표청구항 ▼

[ What is claimed is:] [1.]1. 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 l

[ What is claimed is:] [1.]1. 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.