Vehicle transformer

The invention discloses a vehicle transformer which is arranged on a roof of a vehicle. This vehicle transformer is provided with: a tank (110) in which a transformer main body is housed and which is filled with a refrigerant; a plurality of cooling pipes (120) that are disposed above the tank (110) and that cool the refrigerant by means of heat exchange between the refrigerant and outside air; and a conservator (140) that is disposed on the side of the tank (110) so as to be aligned with the tank (110) in the traveling direction (1) of the vehicle, and that communicates with the tank (110). 一种车用变压器，装设于车辆的车顶上。车用变压器包括：罐(110)，上述罐(110)收纳有变压器主体，并填充有制冷剂；多个冷却管(120)，上述多个冷却管(120)配置于罐(110)的上方，并通过上述制冷剂与外部气体的热交换而对上述制冷剂进行冷却；以及油枕(140)，上述油枕(140)以沿车辆的行驶方向(1)与罐(110)并排的方式配置于罐(110)的侧方，并与罐(110)连通。