| 摘要 |
<P>PROBLEM TO BE SOLVED: To eliminate a false report due to dew condensation in a detection part or a labyrinth part in a fire alarm, that is, to prevent the false report by spreading in all directions water droplets growing on the surface of the detection part due to dew concentration or the like to adhere the water droplets like a thin film, and preventing the lens-shaped growth of the water droplets to prevent the irregular reflection of light emission from a light emission part. <P>SOLUTION: Disclosed is a smoke detection type fire alarm having a light emission part and a light reception part in a detection part in which smoke to be detected is input, the fire alarm being configured to, when the rays of light emitted from the light emission part are irregularly reflected by smoke which has intruded into the detection part, detect the generation of the smoke by detecting the reflected rays of light by the light reception part, where at least the surface of the detection part is configured to be hydrophilic. <P>COPYRIGHT: (C)2012,JPO&INPIT |
