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    • 4. 发明专利
    • ILLUMINATION FIXTURE
    • JPH03280396A
    • 1991-12-11
    • JP7916690
    • 1990-03-28
    • TOSHIBA LIGHTING & TECHNOLOGY
    • SHIMIZU KEIICHINAKAJIMA TATSURO
    • F21V19/00F21S4/00F21S8/04F21S13/04F21V25/02G08B5/36H01H13/18H05B37/00
    • PURPOSE:To have easy check of the lamp retainer mounted state and enhance the safety by furnishing the body of an illuminating fixture with a retainer mount sensing switch which is actuated when mechanical detention of the retainer with the fixture body is disengaged, and thereby putting off an indicator lamp. CONSTITUTION:When a lamp retainer 21 at which lamps 22, 23 are mounted is fitted in a recess 5 in the body 1 of illuminating fixture, resilient detent pieces 32 on both sides are detained with a detaining hole 6 in the body, and also a connector piece 39 is inserted in connector 18 for generating connection. At the same time, detent piece 32 pushes a sensing switch 38 and the coil of a relay 40 is energized, so that an indicator lamp 14 is lighted through an opening/closing contact 43, which allows checking whether the retainer 21 is fitted to the body 1 certainly. In case detent piece 32 of the retainer 21 is set off from the detaining hole 6, by contrast, pressure on the sensing switch is disengaged to cause the indicator lamp to be put off, which permits knowing easily that the mounting is incorrect, and thus accident such as drop of the retainer can be precluded.