VEHICLE HEADLAMP

• Main Authors: UEKI RYUJI, KOIKE TERUO, KIMURA YOSHIKO, UCHIDA MITSUHIRO, KAWANOBE SHOKO
• Format: Patent
• Language: English; Japanese
• Published: 23.02.2015
• Subjects: BLASTING; HEATING; LIGHTING; MECHANICAL ENGINEERING; NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLEEXTERIORS; WEAPONS

PROBLEM TO BE SOLVED: To provide a vehicle headlamp which provides a vehicle driver with good visibility of the front of a vehicle, and does not give glare to an oncoming vehicle and a pedestrian.SOLUTION: A vehicle headlamp 10 is provided in a front grill 5 of a vehicle. The vehicle headlamp 10 includes a light guide plate 16, a light source 14 for emitting light into the light guide plate 16, and a fluorescent substance 17 arranged in a rear face of the light guide plate 16. Light emitted by the light source 14 and taken into the light guide plate 16 is made incident on the fluorescent substance 17, so that fluorescent light is emitted from the fluorescent substance 17, light emitted by the light source 14 and taken into the light guide plate 16 is diffused and reflected by the fluorescent substance 17, the diffused and reflected light and the fluorescent light emitted from the fluorescent substance 17 are color-mixed, the color-mixed light is emitted frontward from a front face of the light guide plate 16, and the luminance of the color-mixed light is million-cd/mor less even in any places of the fluorescent substance 17. 【課題】車両のドライバーにとって前方の視認性が良く、更に対向車及び歩行者に眩しさを与えないようにする。【解決手段】車両用前照灯１０は、車両のフロントグリル５に設けられる。車両用前照灯１０は、導光板１６と、導光板１６の内部に光を発するための光源１４と、導光板１６の後面に設けられた蛍光体１７と、を備える。光源１４によって発せられて導光板１６の内部に取り込まれた光が蛍光体１７に入射することによって蛍光が蛍光体１７から発せられ、光源１４によって発せられて導光板１６の内部に取り込まれた光が蛍光体１７によって拡散反射され、その拡散反射された光と蛍光体１７から発せられた蛍光とが混色され、その混色光が導光板１６の前面から前方へ出射し、その混色光の輝度は蛍光体１７の何れの位置においても１００万ｃｄ／ｍ2以下である。【選択図】図２