| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a lens component which can reduce the number of components and can obtain high visibility when used for a signal display lamp, and to provide a display unit for the signal display lamp and the signal display lamp. <P>SOLUTION: In this lens component 7, a light source 6 is arranged at a light source position 15. Light from the light source 6 is passed from a light-incident part 16 through a plurality of plate-like optical guiding units 17, and led in a radiation direction F. The plurality of plate-like optical guiding units 17 are arranged with an axial line S0 passing through the light source position 15 as a center. Each plate-like optical guiding unit 17 performs the internal reflection of incident light in the radiation direction F by means of a radiation reflecting surface 29. A pair of principal planes 25 almost parallel to the axis S0 guides the incident light in the radiation direction, and perform the internal reflection of the incident light and are substantially parallel to the axis S0 guide in the radiation direction, perform the internal reflection of the incident light form the pair of light-guiding reflecting surfaces. Since the radiation-reflecting surface and the light-guiding reflecting surface required for signal indication lamp 1 are formed integrally with the plate-type optical guiding unit 17, the number of components can be reduced. <P>COPYRIGHT: (C)2006,JPO&NCIPI |
