| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a linear emission device, especially a vehicle-mounted meter needle, capable of emitting uniform and highly-bright linear light from an emission face of a light emitting material. <P>SOLUTION: This device has a light source 2 for emitting point light, and the light emitting material 3 for allowing the point light from the light source 2 to enter, and emitting the light as the linear light. The light emitting material 3 has a light introduction part 12 having a light refracting interface 7 for entering the point light from the light source 2, and an emission part 13 connected integrally to the light introduction part 12 and having a reflecting face 4 for reflecting light entering the light introduction part 12 and an emission face 5 for emitting reflected light from the reflecting face 4 as the linear light. The reflecting face 4 of the emission part 13 is characterized by having a zigzag sectional contour shape by connection of protrusions 11 comprising two slopes 11a, 11b extending at different angles. <P>COPYRIGHT: (C)2003,JPO |
