| 摘要 |
<P>PROBLEM TO BE SOLVED: To solve a problem that, when an indoor light such as a room lamp is provided with a function of being turned off automatically after the lapse of a predetermined time and when the light is made to turn off automatically without detecting a condition of a switch etc., wasteful electric power is consumed because a timer circuit is actuated until the predetermined time elapses irrespective of the lighting condition of the indoor light. <P>SOLUTION: An indoor-light control device controls an indoor light, modulates the indoor light by a predetermined signal, determines the lighting of the room light by detecting the predetermine signal, and turns off the room light after a lapse of fixed time from the time point of that determination after a predetermined equipment associated with the indoor light control device is stopped. <P>COPYRIGHT: (C)2012,JPO&INPIT |
