PROBLEM TO BE SOLVED: To provide an illumination device and an illumination device for a vehicle cabin which can efficiently radiate more light quantity by reducing light intercepted by an illumination window as much as possible.SOLUTION: A light guiding body 23 that is a rod-like body comprises: a cylindrical part 26 which includes a pair of parabolic surfaces 26a along a partial ellipse of an ellipse 31 having a first focal point f1 and a second focal point f2 on a cross section orthogonal to a longer direction; a light incident surface 27 which is arranged in one end face of the cylindrical part 26 facing a luminous source 22; a light control surface 28 which is arranged at a portion approximately corresponding to the first focal point f1 of the cylindrical part 26; and a light emission surface 29 which faces the light control surface 28 and is arranged at a portion closer to the first focal point f1 of the cylindrical part 26 than the second focal point f2. The second focal point f2 is arranged approximately corresponding to an illumination window of an interior material body.SELECTED DRAWING: Figure 6

    【課題】照明用窓で遮られる光を極力少なくして、より多くの光量を効率良く照射することができ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】棒状をなし、長手方向と直交する断面に、第1と第2の2つの焦点f1、f2を有する楕円31の円弧に沿う一対の放物面26aを有したシリンドリカル部26と、光源22と対向配置されるリンドリカル部26の一端面に設けた光入射面27と、シリンドリカル部26の第1焦点f1と略対応している箇所に設けられた光制御面28と、光制御面28と対向し、かつ、シリンドリカル部26の第2焦点f2よりも第1焦点f1に近い箇所に、設けられた光出射面29と、を一体に有して、第2焦点f2を内装材本体の照明用窓に略対応配置してなる導光体23を備える。【選択図】図6


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    Title :

    ILLUMINATION DEVICE AND ILLUMINATION DEVICE FOR VEHICLE CABIN


    Additional title:

    照明装置及び車両室内用照明装置


    Contributors:

    Publication date :

    2016-04-04


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Japanese


    Classification :

    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



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