| 摘要 |
PROBLEM TO BE SOLVED: To provide a detector for ships of good appearance with a built-in buzzer in which water is less likely to penetrate.SOLUTION: Acoustic gaps 22a, 23a are provided between cylinder parts 11b, 11c of an inner panel 11 as outer peripheral members of switches 3, 4 inserted into through holes 22, 23 of a front panel 20 and the through holes 22, 23. To the inner panel 11 adhered to the back of the front panel 20, an acoustic hole 11a opening to a housing space of a buzzer 2 provided on the back side of the inner panel 11 is provided. To the front surface of the inner panel 11, an acoustic groove 11d interconnecting the acoustic gaps 22a, 23a and the acoustic hole 11a is provided, thus making water less likely to penetrate in a detector while improving the appearance. |
