| 摘要 |
PROBLEM TO BE SOLVED: To provide a fire alarm which is simply installed and easily handled in such as inspection and can guarantee a battery life of at least five years or more by using a battery whose capacity is reasonable in size and cost. SOLUTION: In this fire alarm, a battery 13, a sensor part which detects fire, an alarm part which raises an alarm when the fire is detected by the sensor part and a test part which confirms an operation of the alarm part are provided inside a main body 1 in the shape of a flat box, equipped with a locking part 4 for wall hanging on its upper end. The capacity of the battery 13 is distributed to first battery capacity which is consumed for normal monitoring, second battery capacity which is consumed for fire alarm and third battery capacity which is consumed for the inspection and others and current consumption of a circuit which is operated at a normal state is set so that the battery life is set as five years or more based on allocated distribution of the first battery capacity. COPYRIGHT: (C)2005,JPO&NCIPI
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