| 摘要 |
PROBLEM TO BE SOLVED: To provide an elevator landing device for which a service staff does not have to carry a key so that people other than the service staff can not open a front cover without permission. SOLUTION: When a landing call button 4 is pressed within a predetermined time, it is detected by a landing call button signal processing circuit 61, and the signal is transmitted to a call registration circuit 62 and registered as a call. When the landing call button 4 is pressed for a predetermined time or longer, it is detected by the landing call button signal processing circuit 61, a function as a landing call button is stopped, and a secret code signal interpreting circuit is started. When the service staff presses the landing button as the secret code signal with a predetermined procedure for a predetermined time, the secret code signal interpreting circuit 63 compares the secret code signal obtained by this button operation with a reference signal for secret code set in advance and does nothing if they do not match and starts an electronic lock timer 64 if they match so as to unlock an electronic lock 7. COPYRIGHT: (C)2003,JPO
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