| 摘要 |
PURPOSE:To make an apparatus main body thin by providing a cover covering a ballast stored in a recess on a reflecting plate, and making the surface of this cover a reflecting face nearly on the same plane as the reflecting face of the reflecting plate. CONSTITUTION:A rectangular flat fitting casing 5 formed with a recess 6 at the opening section 4 of a reflecting plate 1 is formed into nearly the same size as the opening section 4 and has a peripheral face 7 with nearly the same height as the peripheral section of the reflecting plate 1, and fixed piece sections 8 fitted to the back periphery of the opening section 4 of the reflecting plate 1 by welding are formed on both side edge sections of the peripheral face 7, and a recess 6 is formed on the surface of the reflecting plate 1 when the fixed piece sections 8 are fixed. The surface of a cover 10 is formed into a reflecting face 11, and the reflecting face 11 on the surface is made nearly the same plane as the reflecting face 2 of the reflecting plate 1 when the cover 10 is coupled with the opening section 4 of the reflecting plate 1. An apparatus main body can be made thin. |
