The present invention improves heat dissipation by facilitating the flow of the surrounding air. Provided with a heat sink including: a tabular base part; a tabular protruding piece part that protrudes from the base part toward one side in a thickness direction of the base part; and a tubular protrusion which protrudes from the protruding piece part in a thickness direction of the protruding piece part, and the inside of which is bored in a protruding direction thereof, wherein a plurality of the protruding piece parts is provided along a surface of the base part, and a plurality of the tubular protrusions is provided along a surface of each of the protruding piece parts.

An aluminum alloy fin material for a heat exchanger is made of an aluminum alloy including 0.05 mass % to 0.5 mass % of Si, 0.05 mass % to 0.7 mass % of Fe, 10 mass % to 2.0 mass % of Mn, 0.5 mass % to 1.5 mass % of Cu, and 3.0 mass % to 7.0 mass % of Zn, with the balance being Al and unavoidable impurities. In an L-ST plane thereof, second-phase grains having an equivalent circle diameter equal to or more than 0.030 m and less than 0.50 m have a perimeter density of 0.30 m/m.sup.2 or more, second-phase grains having an equivalent circle diameter equal to or more than 0.50 m have a perimeter density of 0.030 m/m.sup.2 or more, and specific resistance thereof at 20 C. is 0.030 m or more.

A heat exchanger includes a conduit of a first aluminum alloy and a plurality of fins in thermally conductive contact with the exterior of the conduit. The fins include a second aluminum alloy comprising from 0.005 wt. % to 0.1 wt. % of at least one alloying element selected from tin, barium, indium, mercury, and gallium.

The present invention provides a heat dissipation system for use with a liquid crystal television and a liquid crystal television. The heat dissipation system for use with a liquid crystal television is structured such that a heat spreader (4) having high thermal conductivity is adhesively mounted to a shaped heat-dissipating member (1) and is operated in combination with heat-dissipating fins (5) and fans (6), wherein the heat spreader (4) functions as a core heat transfer medium in the entire heat dissipation system to help greatly reduce a temperature gradient and to remove heat from an LED light bar (2) in a quick, massive, and efficient manner so as to prevent the LED light bar (2) from burning down or shortening of service life due to excessive high temperature. Further, due to the arrangement of the heat spreader (4), the size of the shaped heat-dissipating member (1) can be reduced thereby helping thinning of the liquid crystal television.

A combined heat sink has multiple dissipation fins serially mounted together. Each one of the dissipation fins has a body and two flanges. The body has at least one through hole formed through the body. The two flanges are respectively formed on one of two surfaces of the body, and have at least one connecting arm. Multiple protrusions protrude on the at least one connecting arm, and a width of the at least one through hole is smaller than a total width of the at least one connecting arm and the multiple protrusions. When the multiple dissipation fins are mounted together, the protrusions of the at least one connecting arm of each dissipation fin pass through the at least one through hole of an adjacent one of the dissipation fins, and abut an area near the at least one through hole to avoid separations of the dissipation fins.

The present invention improves heat dissipation by facilitating the flow of the surrounding air. Provided with a heat sink including: a tabular base part; a tabular protruding piece part that protrudes from the base part toward one side in a thickness direction of the base part; and a tubular protrusion which protrudes from the protruding piece part in a thickness direction of the protruding piece part, and the inside of which is bored in a protruding direction thereof, wherein a plurality of the protruding piece parts is provided along a surface of the base part, and a plurality of the tubular protrusions is provided along a surface of each of the protruding piece parts.

A pin-shaped first heat radiating fin low in fluid resistance is disposed in a region required to be high in cooling performance, and a second heat radiating fin high in fluid resistance of a shape in which a plurality of columns of grooves which each meander in zigzag at a narrow pitch are arranged side by side is disposed in a region only necessary to be low in cooling performance. Furthermore, the first and second heat radiating fins are installed in parallel to a direction of flow of refrigerant.

A radiating fin and a connection structure composed of multiple radiating fins. Each radiating fin has a main body formed with a first plane face. A first bending edge and a second bending edge extend from two sides of the first plane face. The first plane face is formed with a first perforation and a second perforation and a third perforation and a fourth perforation. A first extension section and a second extension section respectively from the first and second bending edges. Two front ends of the first extension section are bent and formed with a first latch plate and a second latch plate.

Two front ends of the second extension section are bent and formed with a third latch plate and a fourth latch plate. The latch plates of a forward radiating fin are correspondingly passed through and latched in the perforations of an adjacent rearward radiating fin.

A heat exchanger includes a primary plate including a first surface, a second surface, a leading edge, a trailing edge and a plurality of internal passages extending between an inlet and an outlet. A secondary plate is attached to at least one of the first surface and second surface of the primary plate. The secondary plate includes heat transfer structures. A method is also disclosed.

A cast plate heat exchanger includes a first surface including a first surface inlet end and a first group of augmentation features defining a first average density of augmentation features across the first surface. A second surface is in heat transfer communication with the first surface. The second surface includes a second surfaces inlet end and a second group of augmentation features defining a second average density of augmentation features across the second surface. A total augmentation feature density ratio is defined from the first average density of augmentation features to the second average density of augmentation features. A first region is shared by both the first surface and the second surface and covers at least a portion of the first surface inlet end. The first region includes a first region augmentation feature density ratio that is less than the total augmentation feature density ratio.