| 摘要 |
<p>PURPOSE:To improve visibility regardless of an external environment by providing a road surface reflectance sensor for detecting reflective ability of a road surface running a vehicle provided with a headlamp, and changing color of light, irradiating direction, irradiating range, etc., based on the detected reflective ability. CONSTITUTION:A reflectance sensor 78, constituted of a sensor of CCD camera or the like, for detecting reflective ability from a road surface in the front of a vehicle is arranged in the vicinity of a visual position of a driver in the vicinity of a room mirror 15, and also a reference lamp 17 is provided by setting an optical axis and an irradiating range so as to irradiate a road surface of region As ian the front of the vehicle. When this reference lamp 17 is turned on, a control device reads reflective ability to correct luminous energy decreased when lamp color is yellow, and in the case that the reflective ability is a prescribed value or more, the lamp color is set to yellow. Tan the case that the reflective ability is less than the prescribed value further with a fog switch off and a wiper wiping speed at a low speed, since the road surface has low reflectance, the lamp color is set to white.</p> |
