Provided is a light guide device that can provide transmission illumination with uniform brightness irrespective of distance from an entry portion. Light emitted from a light source (24, 25) enters via an entry portion (22, 23) of a light guide portion (light guide material)(20) formed of a light transmitting material along an outer edge portion (30r) of a decorative portion (30), and advances while being repeatedly totally reflected by inner surfaces of the light guide portion (20). In a light guiding portion (26), the light is guided from the inside of the light guide portion (20) into the decorative portion (30), which is made of a light transmitting material. The light is further scattered inside the decorative portion (30) and discharged outside, while in a non-light guiding portion (28), the light advancing inside the light guide portion (20) is not permitted to advance into the decorative portion (30).
Light guide device
17.06.2015
Patent
Elektronische Ressource
Englisch
IPC: | B60K Anordnung oder Einbau von Antriebseinheiten oder von Kraft- bzw. Drehmomentübertragungen in Fahrzeugen , ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES / F21S Ortsfeste Leuchten , NON-PORTABLE LIGHTING DEVICES / G01D MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE , Anzeigen oder Aufzeichnen in Verbindung mit Messen allgemein / G09F DISPLAYING , Anzeigewesen |
Europäisches Patentamt | 2016
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