| 摘要 |
PROBLEM TO BE SOLVED: To provide a fire sensor capable of preventing water from accumulating within a main body.SOLUTION: The fire sensor includes: a detection section 3 that detects a fire; a body 5 that stores the detection section 3; and a main body 2 having a plate cover 8 attached to the body 5. The body 5 has a drain groove 22 formed enclosing the cover 8 for draining water accumulated on an upper face of the cover 8. The drain groove 22 has a drain hole 22a formed at the bottom thereof for draining water flowing into the drain groove 22. The drain groove 22 has a lead-in section 26 formed in the entire periphery thereof for leading water flowing in the drain groove 22 into the drain hole 22a by means of capillary phenomenon. |
