KEY CONTROL UNIT, KEY CONTROL SYSTEM, AND KEY CONTROL METHOD

摘要

PROBLEM TO BE SOLVED: To provide a key control unit which can confirm quickly which keys have been used for a long time.;SOLUTION: A key control unit 10 comprises holder rumps 131 which display sampling information of holder storage parts 14 of which each holds a key at least, and controls so as to make the holder rump 131 light in a case used for a long time without querying whether the holder 14 is returned to the holder storage part 14.;SELECTED DRAWING: Figure 1;COPYRIGHT: (C)2018,JPO&INPIT