Abstract: A heat dissipation device includes a first heat sink and a second heat sink juxtaposed with the first heat sink. The first heat sink includes a first base and a plurality of first fin extending from the first base with a plurality of first channels defined therebetween. The second heat sink includes a second base and a plurality of second fins extending from the second base with a plurality of second channels defined therebetween. The second fins extend beyond a common edge of the first base and the second base to extend into first channels of the first heat sink.

Abstract: A heat sink includes first and second fin sets. The first fin set includes a plurality of fins each having a flange extending perpendicularly from an edge thereof and oriented in a same first direction. The flanges engage with each other in succession through locking parts formed thereon. The second fin set includes a plurality of fins each having a flange extending perpendicularly from an edge thereof and oriented in a same second direction toward the first direction. The flanges engage of the second fins with each other in succession through locking parts formed thereon. One of the flanges of an outmost one of the fins of the first fin set and one of the flanges of an outmost one of the fins of the second fin set are extended toward to and engaged with each other.

Abstract: A heat dissipation device includes a plurality of first fins and second fins, a flattened heat pipe and a base plate. The first fins include a first face at a bottom thereof. The second fins are sandwiched between the first fins and have a second face at a bottom thereof. The heat pipe includes a first section, a second section and a connecting section connecting the first section with the second section. The first section and the second section thermally contact the second face of the second fins. The connecting section thermally contacts the first face of the first fins. The base plate has a bottom surface adapted for contacting a heat-generating electronic component, and a top surface contacting the second face of the second fins and the first section and the second section of the heat pipe.

Abstract: A retention module (10) for securing a heat sink (20) to a printed circuit board (30) includes a pair of carriage arms (12) separated by a space and a connecting wall (14) interconnecting opposite rear free ends of the carriage arms. Each of the carriage arms integrally forms a lock catch (122) thereon to clasp the heat sink. A pair of opposite positioning ears (15) extend upwardly from corners where the carriage arms are connected with the connecting wall. The retention module and the heat sink are preassembled together via the lock catches clasping the heat sink before the retention module is mounted on the printed circuit board.

Abstract: A heat sink fastener includes a main body, a piercing body and an operating member. The main body has a pressing part for pressing a heat sink toward a heat-generating component. An engaging part and a latching leg are disposed at opposite ends of the main body. The piercing body includes a piercing part piercing through the engaging part, and a latching part below the piercing part. The operating member includes a cam pivotally connected to the piercing part and rotatable between locked and unlocked positions. At the locked position, a protrusion formed on the cam abuts a lateral edge of the piercing part to prevent the operating member from spontaneously rotating back to the unlocked position. A bent flange is formed at a periphery of the cam and engages with the engaging part.

Abstract: A retention module (10) for securing a heat sink (20) to a printed circuit board (30) includes a pair of carriage arms (12) separated by a space and a connecting wall (14) interconnecting opposite rear free ends of the carriage arms. Each of the carriage arms integrally forms a lock catch (122) thereon to clasp the heat sink. A pair of opposite positioning ears (15) extend upwardly from corners where the carriage arms are connected with the connecting wall. The retention module and the heat sink are preassembled together via the lock catches clasping the heat sink before the retention module is mounted on the printed circuit board.

Abstract: A heat dissipation device includes a heat sink (10), a fan holder (20) located on the heat sink and a fan (30) mounted on the fan holder. The heat sink includes a plurality of fins (14) extending therefrom and defines two slots (16) in two opposite outmost fins thereof. The fan holder includes two brackets (200) each having a positioning rib (212) engaged in a corresponding slot of the heat sink and resisting the outmost fin to thereby mount the fan holder to the heat sink.

Abstract: A heat sink assembly comprises a heat sink (10) having a plurality of outwardly extending fins (13), a plurality of fasteners (20) and a fan (30) mounted on the heat sink (10) via the fasteners (20). Each of the fasteners (20) comprises a self-tapping screw (25) and a fan holder (22). The fan holder (22) is buckled on the fins (13) and comprises a retaining body (220). The retaining body (220) of each fan holder (22) spans cross each corner of the heat sink (10). A connecting portion (225) extends downwardly from the retaining body (220). The connecting portion (225) abuts against the fins (13) of the heat sink (10). Each self-tapping screw (25) is inserted into a hole (228) defined in the connecting portion (225) and a space between two adjacent fins (13a) of the heat sink (10) to attach the fan holder (22) to the heat sink (10).

Abstract: A heat dissipating device (1) includes a heat spreader (10), a radiator (2), at least one U-shaped heat pipe (12), a fan (3) mounted on the radiator and a pair of clips (4). The radiator includes a first heat sink (20) and a second heat sink (22). The first heat sink (20) includes a first base (200) and a plurality of fins (202) extending from a side of the first base. The second heat sink (22) includes a second base (220) and a plurality of fins (222) extending from a side of the second base. The heat pipe (12) includes an evaporating portion (120) attached to the heat spreader and a pair of condensing portions (122) extending upwardly from opposite ends of the evaporating portion. The two condensing portions are sandwiched between the first base and the second base. The heat pipe transfers heat from the heat spreader to both of the first base and second base.

Abstract: A heat dissipation device includes a heat sink having a heat conducting core and a plurality of fins extending from the core. The core has a downward extension portion extending away the fins for contacting a heat generating device. A locking device includes a locking plate defining a central opening accommodating the extension portion of the core of the heat sink therein and has a plurality of locking arms extending from the locking plate. Pluralities of cutouts circumferentially surrounding and communicating with the opening are defined in the locking plate. The extension portion of the core of the heat sink is punched to press the locking plate of the locking device toward the heat sink and have portions thereof engaged in the cutouts of the locking plate of the locking device, whereby the locking device is stably fixed to the heat sink.

Abstract: A heat dissipation device includes a heat sink (10), a fan holder (20) located on the heat sink and a fan (30) mounted on the fan holder. The heat sink includes a plurality of fins (14) extending therefrom and defines two slots (16) in two opposite outmost fins thereof. The fan holder includes two brackets (200) each having a positioning rib (212) engaged in a corresponding slot of the heat sink and resisting the outmost fin to thereby mount the fan holder to the heat sink.

Abstract: A locking device is for locking a heat sink to an electronic device. The locking device includes a retaining frame and a guiding member positioned on the retaining frame. The guiding member includes a seat having a base sitting on the retaining frame, a sleeve extending upwardly from the seat, and two spaced legs descending from the base of the seat to retain the guiding member to the retaining frame. A fastener is accommodated in the sleeve of the guiding member and is kept vertical to the retaining frame by the guiding member.

Abstract: A heat dissipation device includes a heat conducting core having a heat receiver and a column extending from the heat receiver. A first fin unit includes a plurality of first fins radially extending from the core. The first fins curve along an anticlockwise direction. A plurality of first passages is defined between the first fins. A second fin unit includes a plurality of second fins radially extending from the core. The second fins curve along a clockwise direction. A plurality of second passages is defined between the second fins and communicating with the first passages of the first fin unit. A fan is positioned on the second fin unit for providing forced airflow to the second passages of the second fin unit and then the first passages of the first fin unit. The fan rotates anticlockwise.

Abstract: A locking device for securing a heat sink to a heat generating electronic device includes a retaining member attached to the heat sink and a plurality of fasteners positioned to the retaining member. The retaining member includes a frame and a plurality of fastening feet integrally formed with the frame by metal extrusion. The frame has an opening for receiving a bottom protrusion of the heat sink therein. Each fastening foot has a slot therein communicating with the opening of the frame and defines a fastening hole. The fasteners are respectively positioned in the fastening holes of the fastening feet of the retaining member.

Abstract: A heat dissipation device includes a first heat sink and a second heat sink juxtaposed with the first heat sink. The first heat sink includes a first base and a plurality of first fin extending from the first base with a plurality of first channels defined therebetween. The second heat sink includes a second base and a plurality of second fins extending from the second base with a plurality of second channels defined therebetween. The second fins extend beyond a common edge of the first base and the second base to extend into first channels of the first heat sink.

Abstract: A heat sink mounting assembly includes a retention module having a bottom and a pair of posts extending from the bottom. A heat sink is located on the bottom of the retention module. A clip spans across the heat sink and includes a clamping member having first and second legs releasably engaging with the posts of the retention module, and a pressing member having a first end thereof pivotably engaging with a first end of the clamping member. The pressing member has a pressing portion pressing the heat sink toward the retention module when a second end of the pressing member is depressed to engage with a pair of ears formed at a second end of the clamping member.

Abstract: A heat dissipation device includes a heat sink having a heat conducting core and a plurality of fins extending from the core. The core has a downward extension portion extending away the fins for contacting a heat generating device. A locking device includes a locking plate defining a central opening accommodating the extension portion of the core of the heat sink therein and has a plurality of locking arms extending from the locking plate. Pluralities of cutouts circumferentially surrounding and communicating with the opening are defined in the locking plate. The extension portion of the core of the heat sink is punched to press the locking plate of the locking device toward the heat sink and have portions thereof engaged in the cutouts of the locking plate of the locking device, whereby the locking device is stably fixed to the heat sink.

Abstract: A heat sink assembly (100) includes a heat sink (10) having a plurality of fins (14), a fan handle (24) buckled with the fins and a fan (30) mounted on the heat sink (10) via the fan handle. The fan handle includes a retaining body (26) clasping two adjacent fins having a space therebetween. A screw (22) is extended through the fan and into the space of the two adjacent fins. The retaining body includes a pair of opposite lateral walls (260) clamping opposite sides of the two adjacent fins, for preventing the two adjacent fins from being over expanded outwardly during the insertion of the screw into the space.

Abstract: A fluid guiding device (1) includes a ventilating pipe (10), a barrel (20) and a holding frame (30). The ventilating pipe includes two spring levers (154). A handling tab (156) and an engaging tab (158) extend from a free end of each spring lever, respectively outwardly and inwardly. The barrel forms two jagged members (262) thereon. Each jagged member forms a plurality of parallel teeth (264). The engaging tabs are selectively engaged with corresponding teeth respectively to position the barrel to the ventilating pipe when the barrel is moved to a desired location in the ventilating pipe. The engaging tabs escape from teeth by pulling the handling tabs outwardly to allow the barrel to be movable on the ventilating pipe. The holding frame is secured to the barrel for holding a fluid-driving device thereon.

Abstract: A locking device is for locking a heat sink to an electronic device. The locking device includes a retaining frame and a guiding member positioned on the retaining frame. The guiding member includes a seat having a base sitting on the retaining frame, a sleeve extending upwardly from the seat, and two spaced legs descending from the base of the seat to retain the guiding member to the retaining frame. A fastener is accommodated in the sleeve of the guiding member and is kept vertical to the retaining frame by the guiding member.