| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide an alarm that dissipates dew condensation water to a lower space without draining it to the outside. <P>SOLUTION: The alarm includes: a first recessed part 22 formed by recessing a part of a back part 21 on the side of a ceiling surface C which faces a connector 6 toward the interior; an opening part 22b which is opened in a bottom part 22a of the first recessed part 22, and exposes an insertion hole of the connector 6 to the side of the bottom part 22a; a second recessed part 23 formed by recessing a part of the back part 21 which adjoins the first recessed part 22 toward the interior; and a communication recessed part 24 formed by recessing the part of the back part 21 between the first recessed part 22 and the second recessed part 23 toward the interior and linking the first recessed part 22 and the second recessed part 23 to each other, a recess depth of the communication recessed part 24 being set to be less than at least a recess depth D2 of the second recessed part 23. A diffusion mechanism 23b which diffuses dew condensation water entering the second recessed part 23 to a circumference in the second recessed part 23 is provided at a bottom part 23a of the second recessed part 23. <P>COPYRIGHT: (C)2013,JPO&INPIT</p> |
