| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a light guide member, as well as a fire detector using the same, capable of shining a whole emission face by forming a light guide part thin to widen the light emission surface, and further, capable of making light efficiently emitted in any direction. <P>SOLUTION: At one end of the light guide part 2 guiding light from a light-emitting element 5, an incident part 1 is provided for the light from the light-emitting element 5, while, at the other end, a reflecting part 3 for reflecting light passing the light guide part 2, and a light-emitting part 4 for emitting reflection light of the reflecting part 3 outside are provided. The reflecting part 3 is formed in a staircase pattern with first reflecting faces 30 slanted against an optical axis of light passing the light guide part 2 and second reflecting faces 31 parallel with the optical axis alternately arranged. <P>COPYRIGHT: (C)2012,JPO&INPIT |
