| 摘要 |
<P>PROBLEM TO BE SOLVED: To irradiate light emitted from a solid light-emitting element efficiently to a lighting space. <P>SOLUTION: As for a light source unit 1, a part of light which is emitted from a light source part 10 and enters a main part 140 of a cover 14 is guided inside the cover 14 and is emitted to the outside of the cover 14 from a side part 141. The light emitted from the side part 141 of the cover 14 is reflected downward on the surface of an installation plate 20 of an installation table 2 and is irradiated to the lighting space. That means, a small space S exists between a reflecting plate 21 and the light source unit 1, and that, a white paint with high reflectance is coated on the surface (bottom face) of the installation plate 20 same as on the reflection face (bottom face) of the reflecting plate 21. Thereby, out of the installation plate 20, a portion located in the space S becomes a reflecting part 23, and the light emitted from the side part 141 of the cover 14 is reflected toward the lighting space, and the light emitted from the light source part 10 (LED chip 11) can be irradiated efficiently to the lighting space. <P>COPYRIGHT: (C)2013,JPO&INPIT |
