Vehicle headlight device
View Patent ↗A vehicle headlight device includes optical systems that are respectively provided to light sources, and illuminate ahead of a vehicle by light emitted from the light sources, with light distribution patterns of which illuminating areas are offset to each other at least in vertical directions, a stoppable distance calculator that calculates a stoppable distance of the vehicle, and a light source controller that controls the light sources to be turned on and off so that an area ahead of the vehicle and away from the vehicle by the stoppable distance is illuminated by at least one of the optical systems.
1. A vehicle headlight device, comprising:
a plurality of optical systems that are respectively provided to a plurality of light sources to illuminate ahead of a vehicle by light emitted from the plurality of light sources, where light distribution patterns of the plurality of optical systems have illuminating areas which have a fixed offset to each other at least in vertical directions;
a stoppable distance calculator that calculates a stoppable distance of the vehicle; and
a light source controller that controls the light sources to be turned on and off so that an area ahead of the vehicle and away from the vehicle by the stoppable distance is illuminated based on at least one of the optical systems.
2. The vehicle headlight device of claim 1 , wherein the light source controller turns off or reduces intensities of the light sources other than the light source corresponding to the at least one of the optical systems illuminating the area ahead of the vehicle and away from the vehicle by the stoppable distance.
3. The vehicle headlight device of claim 1 , further comprising a risk object detector that detects the existence of a risk object ahead of the vehicle, and a relative position of the risk object with respect to the vehicle,
wherein the light source controller controls the light sources to be turned on and off so that the risk object is illuminated by the at least one of the optical systems when the risk object detector detects the risk object.
4. The vehicle headlight device of claim 2 , further comprising a risk object detector that detects the existence of a risk object ahead of the vehicle, and a relative position of the risk object with respect to the vehicle,
wherein the light source controller controls the light sources to be turned on and off so that the risk object is illuminated by the at least one of the optical systems when the risk object detector detects the risk object.