Abstract: A pressure-resistant-container gas leakage detecting device for a vehicle, to which a discharge tube casing is attached, includes: a casing having a first casing member and a second casing member coupled to the first casing member to form an internal space; a pressure-resistant container having a body coupled to the interior of the casing and a discharge tube exposed to the outside of the casing, the discharge tube adapted to introduce gas thereinto and to discharge gas therefrom; the discharge tube casing adapted to cover the discharge tube; a first gas leakage detecting sensor attached to the discharge tube casing; corrosion-preventing gas injected between the pressure-resistant container and the casing to be filled thereinto higher or lower than atmospheric pressure; and a gas pressure detecting sensor coupled to the casing to detect the occurrence of the change in the pressure of the corrosion-preventing gas.

Abstract: A vehicle seat is installed inside a vehicle such that an occupant can sit thereon. The vehicle seat includes a backrest which forms a part of the vehicle seat, the backrest being brought into contact with a back of the occupant when the occupant sits, and an armrest which is provided on a central portion of a region of the backrest that is adjacent to a door of the vehicle and extends inwards a predetermined length from the region of the backrest that is adjacent to the door of the vehicle along a surface of the backrest. The occupant is allowed to lean an arm on the armrest when erecting his/her body from the vehicle seat in order to get out. The armrest is provided in the backrest, so that the occupant can easily erect his/her body by leaning an arm on the armrest in order to get out.