| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a lock system capable of preventing a user from forgetting to turn off electricity, gas and the like when the user leaves a room. <P>SOLUTION: A checking signal transmitter 2 is arranged in each site where cutoff should be checked when a person leaves a room. When a leaving person unlocks a lock system from the inside of a room, a lamp indicating sites to be checked is lit. Then, the leaving person returns to each site, checks that turning-off is performed, and pushes a button of the checking signal transmitter 2 to transmit a signal. When the signal is received, a corresponding lamp is turned off. The lock system 1 is configured in such a manner that a person cannot lock and leave a room if checking signals from all checking signal transmitters 2 are not received. <P>COPYRIGHT: (C)2013,JPO&INPIT |
