| 摘要 |
<p>PROBLEM TO BE SOLVED: To obtain an ordinary color at the time of turning off, to obtain a pure functional color at the time of turning on, and to make the functional color to be seen from any direction. SOLUTION: At the time of turning off, an ordinary color of a chromatic color opaque part 8 inside of an inner lens 6 diffused by a diffusion action of a diffusion optical element group 7 outside of the inner lens 6 can be obtained. At the time of turning on, a colored light from a light source bulb 4, which reflects on a reflection surface 5 and passes through a color cap 11, diffuses and transmits the inner lens 6, thereby obtaining a red functional color of the color cap 11. Of all colored lights, the lights which have reached the chromatic color opaque part 8 are not emitted from the inner lens 6, and the lights which have reached a part having no chromatic color opaque part 8 are emitted from the inner lens 6, so that only colored lights which have diffuse and transmitted the inner lens 6 are obtained as the functional color, and a pure functional color can be obtained. By changing the size of the plural chromatic color opaque parts 8 and the focal length of the diffusion optical element group 7, the functional color is allowed to be seen from any direction.</p> |
