| 摘要 |
A ceiling-mounted device is configured so that: a connection section 50 has a first flange 51 protruding from the outer peripheral surface thereof and having engaged therewith the upper wall 41 of a body section 10, and also has a second flange 52 protruding from the outer peripheral surface and fitting into an annular fitting groove 24 formed in the inner peripheral surface of a mounting section 20; an elastic body 53 is disposed between the upper wall 41 of the body section 20 and the first flange 51; and a gap is formed between the mounting section 20 and the body section 10 by the weight of the body section 10 itself. |
