| 摘要 |
<p>PROBLEM TO BE SOLVED: To efficiently illuminate all of a room without restriction whether a wall switch exists or not or restriction of the types of the switch by connecting a remote control transmitter to an electric power source outlet and lighting a luminaire, which is a receiver, by transmitting radio waves at the time of service interruption. SOLUTION: When a remote control transmitter 1 is inserted into an electric power outlet 2, since a battery 8 is built in the remote control transmitter 1, turning on or off of a luminaire 7 can be carried out even under the condition where the remote control transmitter 1 is taken out of the outlet 2. In the case electric supply to the electric power outlet 2 is stopped due to commercial electric power supply failure, radio waves are oscillated from the remote control transmitter 1. The transmitted radio waves 3 are received by a light receiving apparatus 4 of the luminaire 7 and a light source 6 in the luminaire is turned on. At this point, since no commercial electric power is supplied to the luminaire 7, the battery 5 previously built in the luminaire is utilized and the light source 6 can be turned on by power-supplying from the battery. Consequently, without any restriction that whether a wall switch exists or not or restriction of the types of switches, the whole area of a room can be efficiently illuminated.</p> |
