Abstract: A heat dissipation device for dissipating heat generated by an electronic component includes a base, a pair of fin groups and heat pipes connecting the base with the fin groups. The base is used for thermally contacting with the electronic component. The fin groups includes a plurality of fins located over the base. Each of the heat pipes includes an evaporating portion received in the base, a condensing portion extending spirally and upwardly from an end of the evaporating portion through a corresponding fin group. The fins of each fin group is so arranged that each fin group has an arch-shaped profile. The condensing portions in each fin group are parallel to each other. A fan is mounted over the fin groups.

Abstract: A heat dissipation device includes a heat sink assembly, a fan holder and two fans mounted on the two sides of the fan holder. The heat sink assembly includes a heat spreader for contacting with a heat-generating electronic component, and a fin assembly thermally connecting with the heat spreader. The fin assembly has a plurality of channels therein. The fan holder includes a top plate mounted on a top of the fin assembly and a pair of vertical baffle walls extending from two opposite ends of the top plate. The baffle walls of the fan holder are located at two lateral ends of the fin assembly and sandwich the fin assembly therebetween. The two fans respectively abut against inlets and outlets of the channels of the fin assembly. An airflow generated by one fan flows through the fin assembly and is sucked by the other fan.

Abstract: A cooling fan (100) includes a frame (10), a circuit board (20) and a rotor (30). The frame includes a housing (12) and a plate (14) connecting with the housing. The circuit board is mounted on the plate. The rotor is received in the housing and includes a hollow hub (32) and a plurality of blades (38) extending from the hub. A plurality of light emitting diodes (40) is mounted on the circuit board. When the rotor rotates, each LED projects light towards the rotor and to the frame so that the light will be reflected and deflected by the fan whereby the whole fan glows and produces a fantastic visual effect.

Abstract: A heat dissipation device includes a base, a fin group located at a top of the base, a heat pipe connecting with the base and the fin group, a fan located at a top of the fin group, and a fan holder. The fan holder includes a securing portion mounted between the base and the fin group, a mounting portion extending from the securing portion. The mounting portion of the fan holder is located at a top of and spaced from the fin group and the fan is mounted on the mounting portion.

Abstract: A heat dissipation device includes a heat sink, a plurality of mounting brackets and a fan. The heat sink comprises a central core, a plurality of branches at a circumference of the core and a plurality of fins extending outwardly from the core and branches. Each of the branches has a locking part at a distal end thereof. Each of the mounting brackets comprises a mounting plate engaging with the locking part, a supporting part extending outwardly from a top end of the mounting part and a fixing part extending outwardly from a bottom end of the mounting plate. The fan is supported and secured on the supporting part.

Abstract: A heat dissipation device includes a heat sink assembly, a fan holder and two fans mounted on the two sides of the fan holder. The heat sink assembly includes a heat spreader for contacting with a heat-generating electronic component, and a fin assembly thermally connecting with the heat spreader. The fin assembly has a plurality of channels therein. The fan holder includes a top plate mounted on a top of the fin assembly and a pair of vertical baffle walls extending from two opposite ends of the top plate. The baffle walls of the fan holder are located at two lateral ends of the fin assembly and sandwich the fin assembly therebetween. The two fans respectively abut against inlets and outlets of the channels of the fin assembly. An airflow generated by one fan flows through the fin assembly and is sucked by the other fan.

Abstract: A heat dissipation device includes a base, a fin group located at a top of the base, a fan mounted on a top of the fin group, a first heat pipe and a second heat pipe. The first and second heat pipes connect with the base and the fin group and each includes a condensing portion and an evaporating portion. The evaporating portions of the first and second heat pipes are received in the base. The condensing portions of the first and the second heat pipes are located at opposite sides of the fin group respectively and extend through and support the fin group along opposite directions.

Abstract: A heat dissipation device includes a heat sink assembly, a fan holder and a fan mounted in the fan holder. The heat sink assembly includes a heat spreader for contacting with a heat-generating electronic component, and two fin assemblies thermally connecting with the heat spreader and sandwiching the fan therebetween. Each fin assembly defines cutouts at opposite ends thereof. The fan holder includes a top plate and a pair of vertical, downward-extending baffle walls. A pair of clamping arms extends from each baffle wall and inserted into the cutouts of the fin assemblies. Screws extend through the top plate to engage in holes defined in the fin assemblies and communicating with the cutouts. A vaulted operating plate is formed by the top plate for a user to grip to conveniently transport the heat dissipation device.

Abstract: A cooling fan, includes a hub (40) and a plurality of blades (50) extending radially from the hub. Each of the blades is divided into a plurality of zonal zones (505, 51, 52, 53, 54, 55, 56), projections of a plurality of homocentric rounds concentric with the hub on the blades are defined as boundaries of the zones. The zones are coated with a painted layer with different colors to present a rainbow-liked image when the fan is in operation.

Abstract: A heat sink includes a base plate and a plurality of thin-sheet fins. The base plate has a plurality of recesses and protruding ribs formed between every two recesses. The protruding ribs are spaced by the respective recesses with an equal space. Each thin-sheet fin comprises a folded engaging portion and a dissipating portion connecting with the engaging portion. The engaging portion has a first extending portion and a second extending portion parallel to the first extending portion and connecting with the first extending portion. The engaging portions are inserted into the recesses of the base plate and abut against a bottom of the recesses.

Abstract: A heat dissipation device for dissipating heat from a heat-generating electronic element includes a heat sink for contacting with the heat-generating electronic element, a fan placed on the heat sink for providing an airflow through the heat sink and two wire clips. The fan comprises a frame. Each wire clip comprises a V-shaped main body and two locking parts at two opposite ends of the main body. Middles of the main bodies of the two wire clips are securely attached to two lateral sides of the heat sink by two screws. The locking parts of the wire clips are fastened to the frame of the fan, with the main bodies being deformed and pushing the fan toward the heat sink.

Abstract: A heat dissipation device (100) comprises a heat sink (10) and a fan (40) mounted on the heat sink (10). The heat sink (10) comprises a central core (12), a plurality of branches (122) radially extending outwardly from a periphery of the core (12) and a plurality of fins (14) extending from of the core (12) and the branches (122). The fan (40) comprises a plurality of blades (404). The branches (122) and the fins (14) extend and are oriented in a direction opposite to a rotation direction of the blades (404) of the fan (40).

Abstract: A heat sink includes a first array of fins defining a plurality of first channels therebetween, a second array of fins disposed at opposite sides of the first array of fins, and a plurality of grooves extending through the first array of fins and the second array of fins. The second array of fins defines a plurality of second channels therebetween. The grooves are intersected with the first channels and the second channels. A bottom extremity of each groove has a curved shape facing upwardly and laterally. A portion of an airflow generated by a fan mounted on a top of the heat sink flows laterally and downwardly through the grooves to leave the heat sink.

Abstract: A liquid cooling device (1) includes a base (2) enclosing working fluid therein and absorbing heat from a heat-generating electronic component, a heat sink (10) fluidically connecting with the base, and a pump (3) driving the working fluid to circulate between the base and the heat sink. The heat sink has closed top and bottom ends, and includes an outer tube (100) and an inner tube (30) disposed in the outer tube. First and second receiving chambers (34, 14) are respectively formed in the inner tube and between an inner surface of the outer tube and an outer surface of the inner tube for receiving the working fluid therein. The first receiving chamber communicates with the second receiving chamber at an end thereof so that the working fluid flows from the first receiving chamber to the second receiving chamber.

Abstract: A heat sink includes a first array of fins defining a plurality of first channels therebetween, a second array of fins disposed at opposite sides of the first array of fins, and a plurality of grooves extending through the first array of fins and the second array of fins. The second array of fins defines a plurality of second channels therebetween. The grooves are intersected with the first channels and the second channels. A bottom extremity of each groove has a curved shape facing upwardly and laterally. A portion of an airflow generated by a fan mounted on a top of the heat sink flows laterally and downwardly through the grooves to leave the heat sink.

Abstract: A heat dissipation device (100) comprises a heat sink (10) and a fan (40) mounted on the heat sink (10). The heat sink (10) comprises a central core (12), a plurality of branches (122) radially extending outwardly from a periphery of the core (12) and a plurality of fins (14) extending from of the core (12) and the branches (122). The fan (40) comprises a plurality of blades (404). The branches (122) and the fins (14) extend and are oriented in a direction opposite to a rotation direction of the blades (404) of the fan (40).

Abstract: A liquid cooling device (1) includes a base (2) enclosing working fluid therein and absorbing heat from a heat-generating electronic component, a heat sink (10) fluidically connecting with the base, and a pump (3) driving the working fluid to circulate between the base and the heat sink. The heat sink has closed top and bottom ends, and includes an outer tube (100) and an inner tube (30) disposed in the outer tube. First and second receiving chambers (34, 14) are respectively formed in the inner tube and between an inner surface of the outer tube and an outer surface of the inner tube for receiving the working fluid therein. The first receiving chamber communicates with the second receiving chamber at an end thereof so that the working fluid flows from the first receiving chamber to the second receiving chamber.

Abstract: A cooling fan (100) includes a frame (10), a circuit board (20) and a rotor (30). The frame includes a housing (12) and a plate (14) connecting with the housing. The circuit board is mounted on the plate. The rotor is received in the housing and includes a hollow hub (32) and a plurality of blades (38) extending from the hub. A plurality of light emitting diodes (40) is mounted on the circuit board. When the rotor rotates, each LED projects light towards the rotor and to the frame so that the light will be reflected and deflected by the fan whereby the whole fan glows and produces a fantastic visual effect.