| 摘要 |
PROBLEM TO BE SOLVED: To facilitate the installation work, inspection, fire testing work and exchange work of a fire sensor installed in the roof-space by fixing the lower edge of a fixture to a decoration frame and providing a mounting frame on whose upper edge the fire sensor is mounted. SOLUTION: A fixture consists of a decoration frame 10 and a mounting frame 11. The frame 10 is of an annular shape that is circular or rectangular, has an inner hole 12 and is mounted while inserted into the hole formed in a ceiling finishing material 2. The frame 11 has a length corresponding to the distance between the back surface 1 of a ceiling and the material 2 and is vertically expandable. The lower edge of the frame 11 is fixed to the frame 10, a fire sensor 9 is attached to the upper edge of the frame 11, and is made to come close to or brought into contact with the surface 1 of the ceiling to be supported at the position. When the lid 28 of the frame 10 is opened, a detection opening is formed by the hole 12 of the frame 10. A fire testing machine 27 is inserted from the opening 12 and performs fire testing of the sensor 9.
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