Abstract: A cooling device of the kind used in transportation vehicles, designed to maintain the transportation space of such vehicles cool over prolonged periods, includes an elongate housing of generally rectangular cross-section, having side walls and first and second end walls. The cooling device further includes a cooling pipe of elongate "U"-shape, having a curved portion and parallel arms. The ends of the cooling pipe are secured within one end wall, and the central portion of the pipe is supported in relation to the opposed wall by a supporting means.