Patent ID: 8899307

Claim:
A cooling device, comprising: a base; a first heat generator connected to the base; a second heat generator connected to the base; a first passage formed in the base to have a constant width, liquid refrigerant allowed to flow through the first passage for cooling the first heat generator; a second passage formed in the base, the liquid refrigerant allowed to flow through the second passage for cooling the second heat generator; a partition wall disposed in the base, the first passage and the second passage being stacked one above the other in the base via the partition wall, the partition wall including: a first region opened to allow the liquid refrigerant in the first passage to flow into the second passage; and a second region located on a side of the first region to allow the liquid refrigerant in the first passage to flow toward a downstream end of the first passage, wherein the first region is formed such that an opening area of the first region is greater than an opening area of the first passage having the constant width in a direction perpendicular to a flowing direction of the liquid refrigerant in the first passage.