| 摘要 |
PROBLEM TO BE SOLVED: To provide an installation structure of a fire sensor capable of maintaining a laminar flow without letting an air flow flowing into a room turbulent in a clean room or the like, and blocking collection of minute dust on the upper face of the fire sensor. SOLUTION: In this installation structure of the fire sensor 1 installed to a frame material 22 constituting a grating pad or a ceiling chamber of the clean room or the like, a seat plate 10 formed with a flat installation part 12 of the same width as the frame material 22 on the upper face and inclination parts 14a, 14b inclined downward from both sides of the installation part 12 is interposed between the fire sensor 1 and the frame material 22 constituting the grating pad or the ceiling chamber.
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