PROBLEM TO BE SOLVED: To eject uniform light from a light guide structure.SOLUTION: A first crimp area 50a having a crimp at an area adjacent to a bent part 32a is formed at a surface of a transparent material main body 34a, not adjacent to a liquid crystal panel 24, that is continuous to the bend part 32a formed in continuous with an incident part 30a and bent in a direction along the liquid crystal panel 24 and further a second crimp area 52a provided with a more fine crimp than that of the first crimp area 50a is formed at an area adjacent to the first crimp area 50a. Lighting light incident from the incident part 30a is dispersed into a wide range by the crimp formed at the first crimp area 50a and the lighting light is not attenuated with a finer crimp formed at the second crimp area 52a and the light is guided to a deeper side of the transparent material main body 34a.SELECTED DRAWING: Figure 3
【課題】導光体から均一な光を出射させる。【解決手段】入光部30aと連続して形成されて、液晶パネル24に沿う方向に屈曲した屈曲部32aと連続する導光体本体部34aの、液晶パネル24と近接しない側の表面に、屈曲部32aと隣接する領域にシボを備えた第1シボ領域50aを形成して、さらに、第1シボ領域50aと隣接する領域に、第1シボ領域50aよりも細かいシボを備えた第2シボ領域52aを形成し、入光部30aから入射した照明光を、第1シボ領域50aに形成されたシボによって広範囲に散乱させるとともに、第2シボ領域52aに形成されたより細かいシボによって、照明光を減衰させずに導光体本体部34aのより奥まで導光させる。【選択図】図3
LIGHT GUIDE STRUCTURE
導光体構造
2016-08-22
Patent
Elektronische Ressource
Japanisch
IPC: | F21S Ortsfeste Leuchten , NON-PORTABLE LIGHTING DEVICES / B60K Anordnung oder Einbau von Antriebseinheiten oder von Kraft- bzw. Drehmomentübertragungen in Fahrzeugen , ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES / G01D MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE , Anzeigen oder Aufzeichnen in Verbindung mit Messen allgemein / G02B Optische Elemente, Systeme oder Geräte , OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS |
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