Abstract: A front lighting device for a vehicle includes a speed detection unit for detecting a vehicle speed, a steering angle detection unit for detecting a steering angle, and a swivel angle determination unit. The swivel angle determination unit determines a swivel angle based only on the detected steering angle when the detected speed is within a first speed range, and based on both the detected steering angle and the detected speed when the detected speed is within a second speed range which is higher than the first speed range. An actuator controls a direction of light from a head light of the vehicle, so that the direction of the light changes in accordance with the determined swivel angle.

Abstract: A front lighting device for a vehicle includes a speed detection unit for detecting a vehicle speed, a steering angle detection unit for detecting a steering angle, and a swivel angle determination unit. The swivel angle determination unit determines a swivel angle based only on the detected steering angle when the detected speed is within a first speed range, and based on both the detected steering angle and the detected speed when the detected speed is within a second speed range which is higher than the first speed range. An actuator controls a direction of light from a head light of the vehicle, so that the direction of the light changes in accordance with the determined swivel angle.

Abstract: In an automatic optical axis direction adjusting device for a vehicle headlight, a control characteristic is switched according to a road condition, a designation by a user or the like. Therefore, the optical axis direction of the vehicle headlight can be adjusted to suit a vehicle driving condition, a driver's preference or the like without causing a driver to feel uncomfortableness. Furthermore, the adjustment of the optical axis direction can be stopped or restricted according to the switched control characteristic. Therefore, unnecessary operation of a driving system such as an actuator can be avoided to increase durability.