JP2005303063A5 - - Google Patents

Claims (10)

A first plate that forms a flow path through which air flows in a different direction on a base plate that can be thermally connected to a heating element on one surface and the other surface of the base plate to which the heating element is not connected. A heat sink comprising a passage portion and a second flow passage portion, wherein the first flow passage portion and the second flow passage portion have a communicating portion. The first channel portion and the second channel portion are formed in parallel to the base plate, respectively, and the first channel portion and the second channel portion are orthogonal to each other. The heat sink according to claim 1. A plurality of ribs that are thermally connected to the base plate on the other surface of the base plate, and fins that are arranged so as to straddle over any of the plurality of ribs and are thermally connected to the ribs. 3. A plurality of the plurality of ribs, wherein the first flow path portion is formed by the ribs and the base plate, and the second flow path portion is formed by the fins. Heat sink described in. The heat sink according to claim 3, wherein the rib and the fin on the rib are formed of an integral structure. A rib thermally connected to the base plate on the other surface of the base plate; and a plurality of fins disposed on the rib and thermally connected to the rib, the rib and the base The heat sink according to claim 1 or 2, wherein the first flow path portion is formed by a plate, and the second flow path portion is formed by the fins. 6. The heat sink according to claim 3, wherein the fin is disposed to be inclined with respect to the base plate. The heat sink according to any one of claims 3 to 6, wherein the fin has a substantially L-shaped cross section. A base plate that can be thermally connected to the heating element on one side and is installed in a vertical direction, and an oblique direction with respect to the vertical direction on the other side of the base plate to which the heating element is not connected A heat sink comprising a plurality of fins. A fin that transfers heat from the heating element to the air, a first flow path portion that forms a flow path through which air flows in a direction parallel to the fin, and a flow path through which air flows in a direction perpendicular to the fin A heat dissipation structure comprising: a second flow path portion, wherein the first flow path portion and the second flow path portion communicate with each other. The heat dissipation structure according to claim 9, wherein the second flow path portion penetrates the fin.