| 摘要 |
PROBLEM TO BE SOLVED: To prevent electrification on a reflector and to prevent the malfunction of a circuit, etc., caused by instantaneous electric noise by making a projection formed on a metallic cover abut on the reflector. SOLUTION: The projection 1a is formed on the side of the reflector 2 of the metallic cover 1 by caulking so that it may always come in contact with the reflector 2, and the cover 1 is fixed on a housing 8 at four corners by screws. In the case of exchanging a lamp, one screw is loosened and the cover 1 is somewhat lifted in a direction B, so that a lamp unit is pulled out to the outside while the projection 1a is prevented from abutting on the reflector 2. Before the reflector 2 is electrified by the lamp 4 lit by a high frequency power source, electrostatic charge is discharged from the reflector 2 through the projection 1a of the cover 1, the instantaneous noise produced by the electrification is eliminated, and the malfunction of the mounted circuit is prevented. |
