| 摘要 |
PURPOSE:To exactly eliminate possibility of simultaneous lighting of incandescent and fluorescent lamps by providing supporting means of the fluorescent lamp to partially superimpose the incandescent lamp attach the fluorescent lamp when detaching the incandescent lamp. CONSTITUTION:An incandescent lamp 6 is detachably attached to a socket 9, and an annular fluorescent lamp 7 is supported by the supporting means of lamp support 10 and supporting spring 11. When the lamp 6 is attached to the socket 9, a lamp supporting spring 11 makes contact with the lamp 6 to displace it sidewise to eliminate the lamp 7 attaching to the lamp supporting spring 11. When the lamp 7 is, on the other hand, attached to the lamp supporting spring 11 and lamp support 10 in supporting means, the lamp 7 supported by the spring 11 is superimposed with the mounting position of the lamp 6 to eliminate the lamp 6 at the socket 9. |
