Liquid-cooled-type cooling device

摘要

A liquid-cooled-type cooling device includes a casing (2) having a cooling-liquid inlet (26) and a cooling-liquid outlet (27), and an inflow pipe (6) connected to the cooling-liquid inlet of the casing. The cooling-liquid inlet is formed at an end portion of a top wall (15) of the casing. The inflow pipe has a lower wall which is placed on a portion of the top wall of the casing, the portion having the cooling-liquid inlet (26), and which has a through hole (44) for communication with the cooling-liquid inlet on the lower wall of the inflow pipe. A guide portion (40) is provided on a portion of an upper surface of a bottom wall of the casing, the portion corresponding to the cooling-liquid inlet, so as to cause cooling liquid flowing into the casing to flow toward an obliquely downward direction. Thus, a flow resistance which cooling liquid undergoes when flowing into the casing can be reduced.