| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a highly reliable traffic system by supplying power to each equipment for a longer time than an engine power generator, and supplying power to each equipment without any break even when a disaster such as a large earthquake occurs. <P>SOLUTION: When the supply of city gas from city gas piping 22 is normal, supplied city gas is reformed into hydrogen gas by a reforming unit 14, and the hydrogen gas is supplied to a fuel battery main body 11, and a DC power is outputted from the fuel battery main body 11, and supplied to a traffic signal 1. On the other hand, when the supply of the city gas from the city gas piping 22 is interrupted, the hydrogen gas from a hydrogen gas tank 30 is supplied to the fuel battery main body 11 according as a three-way switching valve 15 is switched, and power generation by the fuel battery main body 11 is continued. <P>COPYRIGHT: (C)2004,JPO |
