| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To prevent electric waves from a plurality of luminaires from having radio interference when recording the operating condition of the luminaires by transmitting and receiving electric waves between the luminaires and a recording device. <P>SOLUTION: An illumination pole 1 is equipped with a light source 11 and is also equipped with a monitoring part 13 to memorize a monitored result by monitoring an operating condition. A recording part 2 is mounted in an automobile of which a relative moving direction with the illumination pole 1 is known to communicate with the illumination pole 1 through a radio transmitting path, and it obtains the monitored result memorized in the monitoring part 13 from the illumination pole 1 after giving a requirement to obtain the monitored result to the illumination pole 1. A luminaire antenna 16 provided in the illumination pole 1 controls its directivity, and controls the main lobe of the luminaire antenna 16 so that it is directed toward the approaching automobile in a stand-by state for receiving, and controls the main lobe 16 of the luminaires so that it is directed toward the receding automobile in a transmitting state. <P>COPYRIGHT: (C)2007,JPO&INPIT</p> |
