HEADLIGHT DEVICE

• Main Authors: OSHIMA RITSUYA, MICHIMORI ATSUSHI, NISHITANI REINA
• Format: Patent
• Language: English
• Published: 13.03.2014
• Subjects: ACCESSORIES PECULIAR TO CYCLES AND NOT OTHERWISE PROVIDED FOR,e.g. ARTICLE CARRIERS, CYCLE PROTECTORS; ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING ORSUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES INGENERAL; BLASTING; CYCLE SADDLES OR SEATS; HEATING; INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21Sand F21V, RELATING TO THEFORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THELIGHT EMITTED; LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS; LIGHTING; MECHANICAL ENGINEERING; NON-PORTABLE LIGHTING DEVICES; PERFORMING OPERATIONS; SYSTEMS THEREOF; TRANSPORTING; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLEEXTERIORS; VEHICLES IN GENERAL; WEAPONS

PROBLEM TO BE SOLVED: To solve the problem of a motorcycle that in turning with a gradient, it is difficult to irradiate to the front at the turing side with enough brightness.SOLUTION: A headlight device 100 includes a light source 101, a lens 108 and a driving unit 106. The light source 101 emits a light ray for illuminating the front. The lens 108 has lens surface parts 109, 110 on which the light ray is incident to form an irradiation area. The driving unit 106 drives the lens 108 in rotation. The lens surface part 110 is disposed on both of the upper side and the lower side of the lens surface part 109 in the vertical direction. In a light flux of light rays, the optical axis coincides with the optical axis of the lens 108, and the length in the horizontal direction is larger than the length in the vertical direction to the road surface. When a vehicle travels straight, the light flux transmits through the inside of the range of the lens surface part 109. When the vehicle turns, the driving unit 106 drives the lens 108 in rotation to the light flux so that the end of the light flux in the horizontal direction transmits through parts located symmetrical about the optical axis of the lens 108 in the lens surface part 110.