PROBLEM TO BE SOLVED: To provide an illumination device and an illumination device for a vehicle cabin which can obtain high luminance with reduced power consumption by eliminating loss of incident light from a luminous source.SOLUTION: A light guiding body 23 comprises: a light guiding body part 23a which is slender bar- shaped; a light incident surface 28 that is a convex curved shape, which is arranged in one end face side of the light guiding body part 23a facing a luminous source 22 to refract a direction of a light from the luminous source 22 to an optical axis center O side; a light acquiring flange-like part 27 having a light acquisition surface 27a which is in a back side of the light incident surface 28, and protrudes from lateral faces (light emission surfaces) 25b-25d of the light guiding body part 23a to outside direction from the optical axis center O so as to acquire the light leaked through the light incident surface 28 to the outside direction from the optical axis center O, and refract a direction of a light to the optical axis center O side.SELECTED DRAWING: Figure 5
【課題】光源からの入射光のロスを無くして、少ない消費電力で高輝度が得られる照明装置及び車両室内用照明装置を提供する。【解決手段】細長い棒状をした導光本体部23aと、光源22と対向する導光本体部23aの一端面側に光源22からの光を光軸中心O側に屈折させる凸状曲面形に設けられた光入射面28と、光入射面28の背面側で導光本体部23aの側面(光出射面)25a〜25dより光軸中心O外側方向に突出して設けられ、光入射面28を通って光軸中心O外側方向に漏れ出た光を捕捉し、かつ光軸中心O側に屈折させる光捕捉面27aを設けた光捕捉用鍔状部27とを有した導光体23を設けた。【選択図】図5
ILLUMINATION DEVICE AND ILLUMINATION DEVICE FOR VEHICLE CABIN
照明装置及び車両室内用照明装置
2016-04-04
Patent
Electronic Resource
Japanese
IPC: | B60Q ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL , Anordnung von Signal- oder Beleuchtungsvorrichtungen, deren Einbau oder Halterung oder deren Schaltkreise bei Fahrzeugen allgemein / F21V FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF , Funktionsmerkmale oder Einzelheiten von Leuchten oder Beleuchtungssystemen / G02B Optische Elemente, Systeme oder Geräte , OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS |
ILLUMINATION DEVICE AND ILLUMINATION DEVICE FOR VEHICLE CABIN
European Patent Office | 2016
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