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US 6,608,751 B2Granted
Electronic device
AssigneeFujitsu Limited
InventorsJunichi Ishimine, Masahiro Suzuki
Life of this patent
Estimating the term…
Abstract
In an electronic device that contains a cooling system in which the refrigerant circulates through both the base and the heat-radiator and the heat-radiator is installed away from and to the side of the heat-generator, the heat-generator is positioned on top of the base. This means that the height of the base in the electronic device becomes relatively low, and so the height of the heat-radiator—which must be installed above the height of the base—can be increased, meaning that the required heat-radiating region can be secured and high-performance cooling becomes possible.
Claims4
An electronic device comprising:
- an electronic component, the electronic component being a heat-generator;
- an electrical board on which the electronic component is mounted;
- a cooling unit comprising
- a base having a first face that is thermally connected to the electronic component and having an internal hollow part filled with a refrigerant, and
- a heat-radiator that is thermally connected to the base and that has a space part that is linked to the hollow part,
- wherein the heat-radiator is positioned above the base on a side of the base near the electronic component, and the refrigerant, which vaporizes in the hollow part, circulates through the heat-radiator and condenses to form a liquid;
- and
- a casing having a bottom face and a top face and accommodating the electronic component, the electrical board, and the cooling unit,
- wherein the base is positioned in the bottom of the casing, the heat-generator is positioned on the base, and the electrical board is positioned on the heat-generator, in order, and
- wherein a height of the heat-radiator is greater than a distance from the bottom face of the casing to a top of the electronic component.
7 more elements
Dependencies are inferred from the claim text.