| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an illumination system for tunnel capable of illuminating the inside of a tunnel efficiently in the event of power failure. <P>SOLUTION: In an illumination system 1 for tunnel including a plurality of lighting apparatus 10 disposed in a tunnel, through which vehicles pass, at intervals in the direction of travel of vehicle, each lighting apparatus 10 includes a first lighting body 12a and a second lighting body 12b, and a first power supply 14a and a second power supply 14b which light the first lighting body 12a and the second lighting body 12b. The first power supply 14a is fed with power from a commercial power supply 32, and the second power supply 14b is fed with power from power supplies 34, 36 different from the commercial power supply 32 in the event of power failure. <P>COPYRIGHT: (C)2013,JPO&INPIT |
