| 摘要 |
PROBLEM TO BE SOLVED: To relieve the cause of damage or contact failures by moderating a force acting between a base part and a lamp socket. SOLUTION: This double annulus type annular fluorescent lamp fixture is provided with a fixture body 11 for enclosing lighting circuit parts, and an annular fluorescent lamp 20 detachably disposed horizontally on the lower face side of the fixture body 10. The annular fluorescent lamp 20 is a double annulus type annular fluorescent lamp with a small annulus diameter type arc tube 21 and a large annulus diameter type arc tube 22 concentrically arranged and connected. The double annulus type annular fluorescent lamp 20 is provided with a single base part 29. The base part 29 includes a connection face 28 facing the directly upper side. A plurality of lamp holders 30 are provided to springily and detachably hold part of the annuli of the double annulus type annular fluorescent lamp 20. One of the lamp holders 30 is provided with a lamp socket 40 detachably connected to the connection face 28 of the double annulus type annular fluorescent lamp 20. At least one of the lamp holders 30 is made into a sliding type movable in the radial direction of the annuli of the double annulus type annular fluorescent lamp 20. A slide mechanism 50 is therefore interposed between the sliding type lamp holder 30 and the fixture body 10. |
