Installation structure of release pipe in fuel cell vehicle and fuel gas vehicle

An installation structure of a release pipe in a fuel cell vehicle having a hydrogen tank which stores hydrogen as fuel gas and a fuel cell stack which generates electric power using the hydrogen supplied from the hydrogen tank, the fuel cell stack and the hydrogen tank being arranged in order from front to back of the vehicle in such a manner that the fuel cell stack lies ahead of the hydrogen tank between left and right mainframes which extend in a longitudinal direction of the vehicle under a floor of the vehicle, wherein

• the release pipe is provided to release the fuel gas in abnormal conditions,
• at least a release outlet of the release pipe is placed between the left and right mainframes and between the fuel cell stack and the hydrogen tank under the floor,
• the release pipe includes a portion which is supported on a sub-frame which supports the hydrogen tank, the sub-frame being supported on the left and right mainframes, and
• the supported portion of the release pipe is in a vicinity of the release outlet at which the release outlet is heated by radiant heat from the fuel cell stack and also at which the release pipe is heated by exhaust air from an exhaust outlet of the fuel cell stack.