| 摘要 |
PROBLEM TO BE SOLVED: To plan and manage the timing for replacement of a display part by easily specifying the display part whose life is expiring by having a function of automatically computing the expected life of the display part of a hallway lamp and/or a nurse call master unit and displaying the computed life together with the lighting time. SOLUTION: The expected life and the lighting time of the hallway lamp display part computed from the integrated lighting time of the hallway lamp display parts 200 of hallway lamps 20a, 20b, etc. referring to the rated lighting time, and the expected life and the lighting time computed from the integrated lighting time of a master unit display part 300 of the nurse call master unit 30 referring to the rated lighting time are displayed by using at least one display part of the hallway lamp display parts and the master unit display part. If the remaining life is less than one year, for example, the display is intensified. COPYRIGHT: (C)2008,JPO&INPIT
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