| 摘要 |
PROBLEM TO BE SOLVED: To improve visibility and appearance. SOLUTION: On a surface and/or a back surface of a front lens 2, a prism structure 20 is disposed in which a light from an illuminant bulb 4 is emitted while diffused and an incident external light in a lighting chamber 3 is spectrally distributed and emitted. As a result, the light from the illuminant bulb 4 is diffused and radiated by the prism structure 20, and a beam radiation zone B is expanded so as to improve the visibility in lighting. As the incident external light in the lighting chamber 3 spectrally distributed and emitted by the prism structure 20, it is difficult to see the interior vehicular luninare due to an iridescent color decorative-effect so as to improve appearance. Especially, in the case where a metallic high-brightness feeling is given by an alluminum vapor deposition and a silver coating in the lighting chamber 3, appearance is furthermore improved depending on the metallic high-brightness feeling and the iridescent color decorative-effect. |
