| 摘要 |
PROBLEM TO BE SOLVED: To provide a signal lamp having a transparent cover, capable of conducting light illumination in a wide angle in horizontal direction. SOLUTION: A reflection face 14a of a reflector 14 is formed so that the light from a filament 12a may be reflected and diffused forward. Furthermore, a plain-type transparent cover 16 is arranged on the front side of the reflector 14, and thus, a transparent look is given to the lighting apparatus and necessary light-distribution performance of the lighting apparatus is assured. In this case, in a central area 16A of the transparent cover 16 near a lighting-fixture optical axis Ax, horizontal deflection lenses 18, 20 are arranged to deflect and transmit the direct light from the filament 12a in the direction separating from the lighting fixture optical axis Ax in relation to horizontal direction. In this way, light illumination with a large, right-and-left diffusion angle which cannot be obtained only by conventional diffusionreflection light from the reflector and direct light transmitting the transparent cover from the filament is made available. |
