| 摘要 |
PROBLEM TO BE SOLVED: To ensure the recognition of an alarm by emitting light over a wider area than an alarm lamp disposed for each monitored object, when raising an alarm upon an anomaly in any monitored object in a system for centrally managing a plurality of monitored objects. SOLUTION: A speaker cover 300 of a speaker 24 provided in an alarm device 2 to generate an alarm sound is molded from a light-transparent synthetic resin, and the speaker cover 300 is mounted with main alarm lamps 3 on the edge of the rear surface. The front surface of the speaker cover 300 is provided with a light diffusion property by matting or the like. As the speaker 24 generates an alarm sound, the main alarm lamps 3 are lighted or blinked. The light from the main alarm lamps 3 can penetrate the speaker cover 300 and diffuse out into a wide area of light emission to ensure the recognition of the alarm. COPYRIGHT: (C)2006,JPO&NCIPI
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