Patent ID: 8737071

Claim:
A heat dissipation device, comprising: a hollow heat-sink base and a fluid tube; wherein: the fluid tube is inserted in the heat-sink base, and a cooling medium circulates in the fluid tube; and the heat-sink base comprises at least one heat absorption area configured to absorb heat, and a cooling fluid is received in the heat-sink base, wherein the cooling fluid is vaporized at the heat absorption area to absorb the heat taken by the heat absorption area, and condensed at a position that is inside the heat-sink base and away from the heat absorption area and on the fluid tube to release the absorbed heat; wherein the heat-sink base is configured to form at least one sealed chamber, the cooling fluid is received in the chamber, and at least a portion of the fluid tube is disposed within the sealed chamber; and wherein a fluid tube capillary structure is set on an outer wall of at least the portion of the fluid tube disposed within the chamber.