| 摘要 |
PURPOSE:To surely prevent the color difference between the right and left lamps by providing a dimming means changing the luminous color of a lamp and control means turning off a pair of lamps while the dimming means is operated if the dimming means is operated when a pair of lamps are turned on. CONSTITUTION:A dimming means 3 changing the luminous color of a lamp F and control means 7a, 7b and 8 turning off a pair of lamps F while the dimming means 3 is operated if the dimming means 3 is operated when a pair of lamps F are turned on are provided. Both lamps F are turned off until the switching action of the dimming means 3 is completed after it is started. A pair of lamps F can be surely lighted in the same luminous color, and the occurrence of the color difference between a pair of lamps F due to the malfunction or failure of the dimming means 3 can be surely prevented. |
