| 摘要 |
PROBLEM TO BE SOLVED: To fit and use a disaster alarm easily and safely by everyone and to prevent it from getting unusable by composing the alarm of a plug to be inserted into a socket wired to a commercial power source and the main body of disaster alarm, which is installed on a casing wired to the plug, for sensing and warning against fire or earthquake. SOLUTION: This alarm is composed of a casing 9, a plug 10 to be inserted into a socket 4 wired to the commercial power source fitted onto the casing 9, and the main body of disaster alarm which is installed on the casing 9 wired to the plug 10 for sensing and warning against the fire or earthquake. Then, this alarm can be installed only by interposing it between a socket 4 with lock groove installed on the ceiling 2 and a lock-shaped plug 7 at an illumination instrument through work such as fitting the plug. Since such an installation state provides a state letting commercial power flow to the main body of disaster alarm 1, when a fire sensor senses the fire, a lamp 16 is turned on and warning is enabled by a buzzer. |
