FIRE ALARM

PROBLEM TO BE SOLVED: To provide a compact fire alarm capable of driving or stopping an alarm easily according to a situation. SOLUTION: The fire alarm comprises: an enclosure that has a fitting part at one edge and is configured in such a manner that an external gas can flow into the inside; an alarming device that is attached to a lid member which is disposed at an opening formed at the other edge of the enclosure in a manner to be able to move along the center line of the enclosure; a smoke sensor and/or a heat sensor disposed in the enclosure that sense smoke and/or heat by the gas that flows into the enclosure; a detecting part that senses the movement of the alarming device and outputs a signal; and a control part that outputs a driving signal and a stop signal to the alarming device depending on whether there is a signal outputted from the smoke sensor and/or the heat sensor, and whether there is a signal outputted from the sensing part. COPYRIGHT: (C)2008,JPO&INPIT