Abstract: A heat dissipation device includes a first heat sink (10), a second heat sink (20), a pair of heat pipes (30) connecting the first heat sink and the second heat sink and a fan assembly (40) located between the first heat sink and the second heat sink. The first heat sink comprises a base (12), a cover (14) and a plurality of heat dissipating fins (16) sandwiched between the base and the cover. The second heat sink comprises a plurality of cooling fins (22). Each heat pipe comprises three portions, respectively orderly sandwiched between the base and the heat dissipating fins, sandwiched between the cover and the heat dissipating fins and thermally extending in the cooling fins.

Abstract: A heat sink clip assembly is for attaching a heat sink (10) to a motherboard (60). The motherboard and the heat sink each respectively define through apertures (52) and through holes (16) therein. The heat sink clip assembly includes four sleeves (46), four posts (38), four fasteners (41), and four spring members (44). Each sleeve comprises a top section and a bottom section. The top sections of the sleeves engage in the through holes respectively to attach the sleeves to the heat sink. The posts extend through the through apertures and received in the bottom sections of the sleeves. Each fastener includes a top head and a bottom end, the bottom ends extend into the sleeves and coupled to the top portions of the posts. The spring members are compressed between the top heads of the fasteners and the heat sink urging the heat sink toward the motherboard.

Abstract: A mounting arrangement for mounting a cooling fan to a support member (30) includes a fan frame (10) having a mounting flange (14) for confronting with the support member, and a plurality of vibration isolation members (20) attached to the mounting flange. When the fan frame is secured to the support member, the vibration isolation members are pressingly sandwiched between the mounting flange and the support member.

Abstract: A heat dissipating device (8) for cooling a number of electronic devices. The heat dissipating device includes a heat sink (7), a fan (6) mounted to a side of the heat sink and a fan duct (5). The heat sink includes a heat spreader (70), a cover (74) and fins (72) disposed between the heat spreader and the cover. The fan duct includes a mounting plate (50), a faceplate (52) extending downwardly from and perpendicular to the mounting plate, and baffle walls (506, 508) extending downwardly from the mounting plate. The mounting plate defines locating holes (540) for permitting screws (82) to pass through the locating holes and to engage with threaded holes (740) defined in the cover. An airflow generated by the fan flows through the fins and an outlet (524) defined between the baffle walls and the heat sink.

Abstract: An electronic assembly includes a printed circuit aboard, a CPU, an electronic component and a thermal pad attached to the printed circuit board. The CPU and the electronic component are located on a first face of the printed circuit board. The electronic component is located near the CPU. The thermal pad is attached to a second face opposite to the first face of the printed circuit board and located just below the electronic component.

Abstract: An electronic assembly includes a PCB (20), a socket (22) mounted on the PCB, a CPU (24) connected with the socket, a heat sink (10) in thermal contact with the CPU, a foldable back plate (30) attached to an underside of the PCB and a base plane (40) forming four bridges (42). The back plate includes a first piece section (32) and a second piece section (34) pivotally joined together by a pivot (36). The first and the second piece sections each comprise two legs inserted into two corresponding bridges. Screws are used to extend through the heat sink, the PCB, the bridges to threadedly engage with the legs of the back plate, respectively. The pivot is located under a part of the PCB at which the CPU is mounted.

Abstract: A heat dissipation assembly includes a blower holder, a blower, a first heat sink and a second heat sink. The blower includes an inlet and an outlet and is attached to the blower holder. The blower holder is secured to the first heat sink with the inlet of the blower exposed to the first heat sink. The second heat sink is mounted to the blower holder and confronts the outlet of the blower. The second heat sink thermally connects with the first heat sink via heat pipes.

Abstract: A radiator includes a flat base (10), a pair of heat pipes (20) and a plurality of fins (30) on the base. The base defines a pair of grooves (12) through a top portion thereof. Each heat pipe includes parallel and symmetrical first and second sections (22, 24). The first sections are soldered to the base in the grooves. Each fin defines a notch (32) at a bottom portion thereof and a pair of holes (36) at opposite sides of the notch. Flanges (35) extend perpendicularly from the notches of the fins, cooperatively defining a streamline airflow guiding surface. Collars (37) extend perpendicularly from the holes of the fins, for receiving the second sections of the heat pipes.

Abstract: A fastener for a heat sink of the present invention includes a length-variable operating member (10), a piston member (20), an embracing member (30), a resilient member (40) and a post (58) extending from a printed circuit board (50). The piston member is movable in the operating member when the operating member varies between a shortest length and a longest length. The resilient member covers around the piston member. The embracing member is controllable cooperatively by the piston member and the resilient member to grasp the post or release the post.

Abstract: A retaining device (20) for mounting a heat sink (30) to an electronic device (40) includes an unitary metal wire clip (22), a locking device (26) and a camming member (24). The clip includes a pair of spaced apart pressing beams (221), at least one latching beam (223) and a crossbeam (225). The latching beam is set at one side of the pressing beams. The crossbeam extends between the pressing beams at an opposite side thereof. The camming member is pivotably attached to the locking device and includes a cam (242) being engageable with the crossbeam. The camming member is pivotable relative to the locking device from an unlocked position to a locked position and the pressing beams force the heat sink into close contact with the electronic device when the camming member is located at the locked position.

Abstract: A mounting device for a heat sink (200) includes a pair of pivot members (10), two joining members (30), and two pairs of spring members (20). Each pivot member includes a clipping portion (11) for clasping the electric unit (300). The joining members pivotably connect with the pivot members. Each joining member includes a pressing portion (310) for resiliently abutting against the heat sink toward the electric unit. The spring members each includes two end catches (21), (22) secured with the joining member and a corresponding member and capable of providing resilient torsions to drive the clipping portions to engage with the electric unit when the clipping portions rotate to one position away from the electric unit.

Abstract: A heat dissipating device for a CPU includes a chassis (10), a heat sink (20), a fan cover (50) and a fan (60). The heat sink includes a coin-shaped connecting piece (22) and a plurality of cooling fins (30) arranged radially and defining an inter space for receiving the connecting piece. A plurality of airflow passages is formed between adjacent cooling fins. A plurality of heat pipes (40) is attached to a periphery of the cooling fins and the chassis. The fan cover partially surrounds the heat sink. The fan is secured to the fan cover to provide forced airflow through the airflow passages of the cooling fins radially.

Abstract: A cooling fin assembly (10) includes a plurality of cooling fins (10a) joined together. Each of the cooling fins includes a main body (11a) forming four engaging members (14a) at four corners thereof respectively. Each of the engaging members includes a roll piece (15a) with an elongated hole (16a) defined therein and a connecting piece (17a) with an engaging piece (18a) extending therefrom. In assembly of the cooling fins, the engaging pieces of each of the cooling fins engage in the corresponding holes of the roll pieces of an adjacent cooling fin to thereby fasten and join the cooling fins with one another.

Abstract: A heat dissipation device includes a mounting plate (21) for mounting the heat dissipation device to a circuit board (3) on which a CPU (4) and a plurality of capacitors (31) are mounted, a heat sink (20), a core (25), and a fan (1) mounted on the heat sink. The heat sink locates above the mounting plate and includes a hollow cylinder (202) and a plurality of curved fins (204) extending outwardly from the cylinder. The core includes a base (26) for contacting the CPU and a post (27) extending from the base through the mounting plate to be received in the cylinder. The mounting plate is spaced from the circuit board to allow the capacitors to locate between the mounting plate and the circuit board. The mounting plate defines a plurality of openings (23) for providing access for cooled air from the fan to the CPU and the capacitors.

Abstract: A heat dissipating device is adapted to remove heat from an electronic package. The heat dissipating device includes a heat sink (10) and a fan (30) generating airflow. The heat sink has a base (11) and a plurality of first fins (13) extending therefrom. First airflow channels (132) are defined between the first fins. A plurality of second fins (15) are transversely attached to the first fins. The second fins have second airflow channels (152) defined therebetween. The second airflow channels communicate with the first airflow channels.