Patent ID: 7264359

Claim:
A cooling apparatus comprising: a heat receiving casing thermally joined to a heating object directly or indirectly; a circulating route communicating with inside of the heat receiving casing; a fluid medium inside the heat receiving casing and in the circulating route; a pump of circulating the fluid medium, and provided inside the heat receiving casing; and cooling means of cooling the circulated fluid medium, wherein a driving electrical substrate of driving the heating object is placed on a side of the heating object, where the heat receiving casing is thermally joined directly or indirectly, a pressure holder of pressing the driving electrical substrate to the heating object is placed on a side of the driving electrical substrate, where the heat receiving casing is thermally joined directly or indirectly, the driving electrical substrate has a driving electrical substrate window, the pressure holder has a pressure holder window at a position overlapping the driving electrical substrate window, and the heat receiving casing has a heat receiving portion penetrating the driving electrical substrate window and the pressure holder window and contacting the heating object.