| 摘要 |
PROBLEM TO BE SOLVED: To simultaneously achieve fixing and breakage prevention of a light-emitting tube or a protective tube by making a fixing tool for fixing the light-emitting tube or the protective tube to a support frame have a breakage-preventing function of the light-emitting tube or the protective tube.SOLUTION: A fixing tool 8 fixes a light-emitting tube 2 or a protective tube 7 to a support frame 5 incorporated in an outer bulb 3. This tool has a coating part 81 covering an outer peripheral surface or an outer periphery of the light-emitting tube 2 or the protective tube 7, and in the coating part 81, a light transmission window 8 W is formed through which light emitted from the light-emitting tube 2 is made to pass. |
