A railway vehicle comprising: an air-conditioner configured to generate conditioned air to be supplied to a passenger compartment of the railway vehicle ; and a heat generating device provided adjacent to the air-conditioner and including a heat generating section, the air-conditioner and the heat generating device being provided under a floor in a longitudinal direction (X) of the railway vehicle , wherein the air-conditioner changes a flow direction of outdoor air suctioned from any of a width direction (Y), an upper side, and a lower side of the railway vehicle to eject the outdoor air in the longitudinal direction (X) of the railway vehicle, and cools the heat generating device , characterised in that : the air-conditioner includes, in the longitudinal direction (X) of the railway vehicle , an outdoor blower chamber (A) in which an outdoor blower for ventilating an outdoor heat exchanger is installed and which is provided at a position adjacent to the heat generating device , and an outdoor unit chamber (B) that abuts on the outdoor blower chamber (A) and includes the outdoor heat exchanger , and in a process of guiding a flow direction of outdoor air , which is suctioned to the outdoor unit chamber (B) and flows in the width direction (Y) or a vertical direction (Z) of the railway vehicle , to the outdoor blower chamber (A), the flow direction is changed into a direction along the longitudinal direction (X) of the railway vehicle. an air-conditioner configured to generate conditioned air to be supplied to a passenger compartment of the railway vehicle ; and a heat generating device provided adjacent to the air-conditioner and including a heat generating section, the air-conditioner and the heat generating device being provided under a floor in a longitudinal direction (X) of the railway vehicle , wherein the air-conditioner changes a flow direction of outdoor air suctioned from any of a width direction (Y), an upper side, and a lower side of the railway vehicle to eject the outdoor air in the longitudinal direction (X) of the railway vehicle, and cools the heat generating device , characterised in that : the air-conditioner includes, in the longitudinal direction (X) of the railway vehicle , an outdoor blower chamber (A) in which an outdoor blower for ventilating an outdoor heat exchanger is installed and which is provided at a position adjacent to the heat generating device , and an outdoor unit chamber (B) that abuts on the outdoor blower chamber (A) and includes the outdoor heat exchanger , and in a process of guiding a flow direction of outdoor air , which is suctioned to the outdoor unit chamber (B) and flows in the width direction (Y) or a vertical direction (Z) of the railway vehicle , to the outdoor blower chamber (A), the flow direction is changed into a direction along the longitudinal direction (X) of the railway vehicle. the air-conditioner includes, in the longitudinal direction (X) of the railway vehicle , an outdoor blower chamber (A) in which an outdoor blower for ventilating an outdoor heat exchanger is installed and which is provided at a position adjacent to the heat generating device , and an outdoor unit chamber (B) that abuts on the outdoor blower chamber (A) and includes the outdoor heat exchanger , and an outdoor blower chamber (A) in which an outdoor blower for ventilating an outdoor heat exchanger is installed and which is provided at a position adjacent to the heat generating device , and an outdoor unit chamber (B) that abuts on the outdoor blower chamber (A) and includes the outdoor heat exchanger , and in a process of guiding a flow direction of outdoor air , which is suctioned to the outdoor unit chamber (B) and flows in the width direction (Y) or a vertical direction (Z) of the railway vehicle , to the outdoor blower chamber (A), the flow direction is changed into a direction along the longitudinal direction (X) of the railway vehicle. <EOS>