| 摘要 |
PROBLEM TO BE SOLVED: To provide an installation structure of an alarm device hardly allowing invasion of dust, an insect or the like into between a wall and the alarm device, and having an improved design. SOLUTION: In this installation structure of the alarm device K installed on the wall by use of a hook member 2, a recessed part installed with the hook member 2 is formed in the rear face of the alarm device K. The installation structure is configured such that an inner circumferential edge part of the recessed part and an outer circumferential edge part of the hook member 2 come into line, and that the rear face of the alarm device K and the rear face of the hook member 2 become flush, when installing the hook member 2 to the recessed part. COPYRIGHT: (C)2007,JPO&INPIT
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