| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a lighting unit capable of efficiently emitting incident light from an emission surface. <P>SOLUTION: Reflecting plates 11, 12, 10, 14, 15 are installed on a light guide plate 20 which has an incident part 20a from which visible light from a light source 13 enters and the emission surface 20b from which the visible light entered from the incident part is propagated inside and emitted. A large number of fine reflecting parts 20e of concave shape are arranged point-like on the opposite side face 20d to the emission surface 20b of the light guide plate. With this structure, light entered from the light source into the light guide plate is guided efficiently to the emission surface by being reflected, refracted, or scattered by the reflecting parts. <P>COPYRIGHT: (C)2010,JPO&INPIT |
