| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a hydrogen gas detector accurately and stably detecting the concentration of hydrogen gas exiting in a cabin of a fuel cell vehicle, and surely notifying it if the concentration of the detected hydrogen gas is higher than the specified value to a driver. <P>SOLUTION: A head rest 32 supporting the head of the driver is installed in the upper part of a driver seat 30. The hydrogen gas detector 40 is arranged on the side part faced to a driver seat door of the head rest 32. The hydrogen gas detector 40 has a housing 42, and a hydrogen gas sensor 44, an alarm part 46, a control part 48, and a battery 50 are housed in the housing 42. The hydrogen gas sensor 44 and the alarm part 46 are exposed to the outside on a surface pointed to the driver seat door of the housing 42. <P>COPYRIGHT: (C)2004,JPO&NCIPI |
