Abstract: A heat dissipation device is used for dissipating heat from a CPU and electronic components. The heat dissipation device includes a heat absorbing portion for absorbing heat from the CPU, and a heat sink located on the heat absorbing portion. The heat sink includes a plurality of curved fins defining a plurality of curved passages therebetween. An airflow source is located adjacent to the heat sink for providing forced airflow to the heat sink. A direction of the airflow from the airflow source is changed when it passes through the passages. A direction of the airflow out of the passages is perpendicular to a direction of the airflow into the passages. The airflow out of the heat sink further flows to the electronic components located adjacent to the CPU.

Abstract: A heat dissipation device includes a base (40) and fins (30) attached to the base (40) and two heat pipes (20). The fins (30) include a first portion (325) and a second portion (326) connecting with one side of the first portion (325), and the second portion (326) is higher than the first portion (325). Each of the heat pipes (20) includes an evaporating portion (22) sandwiched between the base (40) and the first portion (325) of the fins (30), a condensing portion (24) inserted into the second portion (326) of the fins (30).

Abstract: A heat dissipation system is used for dissipating heat generated by an electronic device mounted on a printed circuit board. The heat dissipation system includes an enclosure adapted to receive the electronic device therein, the enclosure having a base plate on which the printed circuit board is mounted. A spreader adapted for contacting the electronic device in the enclosure. A plurality of fins disposed between the printed circuit board and the base plate, the fins thermally engaging with the base plate. A heat pipe is used to thermally connect the spreader and the fins together, which are positioned at opposite sides of the printed circuit board, respectively. Accordingly, the enclosure can help to dissipate the heat generated by the electronic device.

Abstract: A heat dissipation device includes a base and a fin set arranged on the base. The fin set includes a plurality of fins each having an undulating body and two flanges extending from the body. The body includes a plurality of peak faces, a plurality of trough faces alternating with the peak faces and a plurality of slanted faces each connecting adjacent peak face and trough face. The peak faces of each fin conform to the peak faces of an adjacent fin, while the trough faces of each fin conform to the trough faces of the adjacent fin. Pluralities of undulating passages are defined between two adjacent fins. Each heat pipe has a first section contacting the base and a second section extending through the fin set. A fan is located corresponding to the passages of the fin set for providing forced airflow to the fin set.

Abstract: A heat dissipation device includes a heat sink (10) and a first heat pipe (20) enclosing a bottom edge of the heat sink. The heat sink includes a base (12) defining a first passage (120) extending therethrough. The first heat pipe includes a first transferring section (22) extending in the first passage and totally embedded in the base and a pair of first dissipating sections (24) extending from the first transferring section. The first dissipating sections of the first heat pipe are attached on an outer periphery of the base. The first transferring section of the first heat pipe absorbs heat in the middle of the base and transfers it to the first dissipating sections to evenly distribute the heat throughout the whole base.

Abstract: A heat dissipating device (8) includes a heat sink (40), a first and a second fixing members (2, 3) mounted on the heat sink, a lever (1) pivotably mounted to the second fixing member, a fan holder (5) and a fan (6) mounted on the fan holder. A pair of mounting holes (26) is defined in the first fixing member. A catch (38) is bent from the second fixing member for clasping the lever. The fan holder includes a pair of tongues engaged in the mounting holes of the first fixing member, and a U-shaped receiving portion (58) receiving and downwardly pressed by the lever.

Abstract: A heat sink assembly includes a primary heat sink and a subordinate heat sink. The primary heat sink comprises a base with a main surface; the subordinate heat sink is attached to the primary heat sink and movable relative to the primary heat sink in a direction perpendicular to the main surface of the primary heat sink; the subordinate heat sink comprises a base with a main surface parallel to the main surface of the primary heat sink. The main surfaces of the primary heat sink and the subordinate heat sink face in a similar direction.

Abstract: A heat sink fastener includes a main body, a piercing member and a wire clip. The main body includes a pressing part for holding a heat sink in contact with a heat-generating component, an engaging part and a latching leg; the engaging part and the latching leg are disposed at opposing ends of the pressing part. The piercing member includes a piercing body extending through the engaging part of the main body and a tubular part and a hook. The wire clip includes a pivot shaft pivotally connected with the tubular part of the piercing member, a locking leg for fastening to the main body and a lever interconnecting the pivot shaft and the locking leg together, wherein the lever is rotatable to change the positional relationship between the piercing member and the engaging part of the main body.

Abstract: A heat dissipation device (10) includes a first heat sink (20), a second heat sink (30) and a heat pipe (40) transferring heat from the first heat sink to the second heat sink. A bracket (50) includes a first end (51) attached to the first heat sink and a second end (52) attached to the second heat sink, thus enhancing the strength and stability of the heat dissipation device.

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 heat sink fastener includes a main body, a piercing member and a wire clip. The main body includes a pressing part for holding a heat sink in contact with a heat-generating component, an engaging part and a latching leg; the engaging part and the latching leg are disposed at opposing ends of the pressing part. The piercing member includes a piercing body extending through the engaging part of the main body and a tubular part and a hook. The wire clip includes a pivot shaft pivotally connected with the tubular part of the piercing member, a locking leg for fastening to the main body and a lever interconnecting the pivot shaft and the locking leg together, wherein the lever is rotatable to change the positional relationship between the piercing member and the engaging part of the main body.

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: A heat sink fastener includes a main body, a piercing body and an operating member. The main body includes a pressing part adapted for pressing a heat sink toward a heat-generating component, an engaging part and a latching leg, the engaging part and the latching leg being disposed at opposite ends of the pressing part. The piercing body includes a piercing part piercing through the engaging part and movable up and down in the engaging part, and a latching part below the piercing part and facing the latching leg. The operating member is connected to the piercing part and linearly movable along a direction perpendicular to the engaging part to put the pressing part in tension by exerting a force on the engaging part or to relax the tension by relieving the force exerted on the engaging part.

Abstract: A heat dissipating device (8) includes a heat sink (40), a first and a second fixing members (2, 3) mounted on the heat sink, a lever (1) pivotably mounted to the second fixing member, a fan holder (5) and a fan (6) mounted on the fan holder. A pair of mounting holes (26) is defined in the first fixing member. A catch (38) is bent from the second fixing member for clasping the lever. The fan holder includes a pair of tongues engaged in the mounting holes of the first fixing member, and a U-shaped receiving portion (58) receiving and downwardly pressed by the lever.

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: 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.