LIGHTING DEVICE

• Main Authors: KUSAKA YUSUKE, FUJITA MASARU, KIKUCHI HARUSHIGE
• Format: Patent
• Language: English; Japanese
• Published: 16.11.2015
• 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 solve a problem that since the terminal end in a direction opposite to the light source is plane in its shape in a flat plate-like light guide plate, light leakage from the terminal end or strong light from an edge part is generated to cause a bright line to become irregular in shape and since the side surface is covered by an impermeable frame, the side surface does not show any light emission.SOLUTION: In order to solve the problem described in the theme, this invention is constituted to comprise a light entering part for taking light from a light source into a light guide plate; a light flexure for changing an advancing direction of light taken from the light entering part into a main direction of light guide; a first light emitting part for emitting light fed into a main light guiding direction through the light flexure part and emitting light in plane form; and a reflection member shape in which an end part, which is a terminal end as viewed from the light source of the light guide plate, is bent and the bent shape has a plane with convexoconcave bent reversely to a bending direction of the arcuate shape. 【課題】平板状の導光板では、光源と反対方向の終端が平面であることから、その終端部からの光り漏れや、エッジ部から強い光が発生し、輝線ムラとなる。また、側面は不透過のフレームに覆われているため、側面は発光しない。【解決手段】上記課題を解決するために、光源からの光を導光板内部に取り込む入光部と、前記入光部から取り込まれた光の進行方向を主となる導光方向へ変化させる光曲げ部と、前記光曲げ部を介して主となる導光方向へ導入した光を出射し、面状に発光する第一発光部と、導光板の光源からみて終了端となる端部が曲がり、前記曲がり形状の円弧形状の曲がり方向と凹凸が逆側に曲がった面をもつ反射部材形状で構成する。【選択図】図１