Patent ID: 7826217

Claim:
A cooling system for an electronic apparatus for cooling a semiconductor device on an electronic circuit substrate mounted on the electronic apparatus, wherein the electronic circuit substrate is detachably installed in a casing which forms the electronic apparatus, the cooling system is formed of a heat transfer member and a cooling member which are separately formed, each having a sealed structure which contains a refrigerant, the heat transfer member includes a first heat transfer portion thermally connected to the semiconductor device at one end, and a second heat transfer portion thermally connected to the cooling member at the other end, and is detachable with respect to the casing together with the electronic circuit substrate when the electronic circuit substrate is inserted into or detached from the casing of the electronic circuit substrate, the second heat transfer portion of the heat transfer member is disposed inside or outside the casing of the electronic apparatus by mounting the electronic circuit substrate on the electronic apparatus, the heat transfer member has a sealed tubular configuration containing a phase-change refrigerant, the refrigerant is vaporized by absorbing heat from the semiconductor device for heat reception at the first heat transfer portion, the refrigerant vaporized in the first heat transfer portion of the heat transfer member is liquefied to transfer the heat to the cooling member by absorbing the heat from the thermally connected cooling member at the second heat transfer portion, the cooling member is any one of an air cooling member using a cooling fan and a liquid cooling member for circulating the refrigerant, which is selected in accordance with a heat generation amount of the semiconductor device, and thermally connected at the second heat transfer portion of the heat transfer member to perform heat transfer with the heat transfer member, the liquid cooling member includes a sealed passage which connects between a thermal connector thermally connected to an outer peripheral wall of the second heat transfer portion of the heat transfer member and a radiator as a heat releasing portion with a pipe, the refrigerant being circulated in the sealed passage, the thermal connector has a substantially cylindrical hollow joint structure which encloses an outer peripheral wall of the second heat transfer portion of the heat transfer member, and an inside of the thermal connector is divided into a plurality of passages with a plurality of circular partitions.