Abstract: An electronic device includes a first housing with a first air inlet and outlet, a heat dissipation assembly, and a filter structure between the first housing and the heat dissipation assembly. The heat dissipation assembly defines a second air inlet and outlet. The first air inlet, the second air inlet, the second air outlet and the first air outlet communicate with each other. The heat dissipation assembly draws air across itself from the two air inlets, and expels the air from the two air outlets. The filter structure covers the second air inlet and defines a plurality of very small holes which function to filter dust out from the incoming air.

Abstract: A heat dissipation device includes a conductive plate and a fastener. The fastener includes a fastening element and an elastic element coiled around the fastening element. The fastening element includes a pole portion and a head portion formed at one end of the pole portion. The conductive plate defines a supporting portion through the conductive plate. The supporting portion defines a hole, an upper groove and a lower groove communicating with one another. The upper groove and the lower groove are coaxial with each other. A flange protrudes from a circumference of the pole portion. The pole portion enters the upper groove. The flange abuts a bottom of the conductive plate and is received in the lower groove. The elastic element elastically abuts the top of the conductive plate.

Abstract: A heat dissipation device includes a heat pipe and a fin set. The fin set includes a plurality of fins. Each of the fins includes a body, a first flange vertically extending from a top side of the body, and a second flange vertically extending from a bottom side of the body. The first flange has a first edge abutting a front neighboring fin and a second edge spaced to the first edge to define a slit. The first flange forms an extending portion extending from the second edge to define a gap between the extending portion and the body of the front neighboring fin. Each of the extending portions is soldered to the body of the front neighboring fin by solder filled in the gap between the extending portion and the body of the front neighboring fin from the slit.

Abstract: A flexible circuit board is disclosed, including a first insulation layer, a second insulation layer and a circuit layer, wherein the first insulation layer is attached to one side of the circuit layer and the second insulation layer is attached to the other side of the circuit layer, each of the first insulation layer and the second insulation layer is provided with a foldable portion along their length, the foldable portion of the first insulation layer is corresponding in position with the foldable portion of the second insulation layer, and the circuit layer includes a set of power wires and at least one lighting wire. And a method for manufacturing the flexible circuit board, and a LED flexible strip light are also disclosed.

Abstract: A flexible circuit board is disclosed, including a first insulation layer, a second insulation layer and a circuit layer, wherein the first insulation layer is attached to one side of the circuit layer and the second insulation layer is attached to the other side of the circuit layer, each of the first insulation layer and the second insulation layer is provided with a foldable portion along their length, the foldable portion of the first insulation layer is corresponding in position with the foldable portion of the second insulation layer, and the circuit layer includes a set of power wires and at least one lighting wire. And a method for manufacturing the flexible circuit board, and a LED flexible strip light are also disclosed.

Abstract: An exemplary electronic device includes a container, a fan assembly and a duct received in the container. The fan assembly includes a centrifugal fan and a fin group thermally contacting an electronic component in the container. An air passage is defined between each adjacent fins of the fin group. An inner side of the fin group is mounted on an outlet of the centrifugal fan. A bottom surface of the fin group and an inner surface of the container cooperatively define a first channel therebetween. The duct includes an inlet and a first outlet. Airflow guided by the centrifugal fan flows through the duct and the first channel to cool a bottom end of the fin group, then is absorbed into the centrifugal fan from an inlet of the centrifugal fan, and then flow through the air passages of the fin group to cool a central portion the fin group.

Abstract: A heat sink for dissipating heat generated by an electronic element is provided. The heat sink includes a heat pipe and a conducting member for transferring heat generated by the electronic element to the heat pipe. The conducting member abuts the electronic element, and the conducting member is applied onto the heat pipe to reduce a thickness of the heat sink.

Abstract: A permanent magnet motor has a stator and a rotor rotatably mounted to the stator. The stator has a housing with n side portions and n connecting portions distributed alternately, wherein n is a integer equal to or greater than 3. Adjacent side portions are interconnected by one of the connecting portions. The radial cross section of each side portion is a convex curved line which is curved outwardly relative to a straight line passing through the two ends of the convex curve line. Permanent magnets are fixed to an inner surface of the housing. An end cap fixed to one end of the housing, has a bottom and n side walls extending from the bottom. A flat mounting surface is formed at the outer surface of a first one of the side walls.

Abstract: A power supply device includes a laptop battery and a voltage converter secured to the laptop battery. The laptop battery includes a first connecting portion and a first interface for outputting a first voltage. The voltage converter includes a housing, a second connecting portion formed in the housing and a circuit board secured to the housing. The circuit board includes a second interface, a first converting unit and a third interface. The first connecting portion is detachably coupled to the second portion to secure the voltage converter to the laptop battery. The second interface is electronically connected to the first interface so as to receive the first voltage when the first connecting portion is coupled to the second connecting portion. The first converting unit converts the first voltage to the second voltage and outputs the second voltage through the third interface.

Abstract: An electronic device includes a mainboard and a fan mounted on the mainboard. The fan includes a stator and a rotor. The rotor includes a hub covering around a periphery of the stator, and a plurality of blades disposed at a periphery of the hub. The stator is directly fixed to and directly electrically connected to the mainboard.

Abstract: An electronic device includes a first housing with a first air inlet and outlet, a heat dissipation assembly, and a filter structure between the first housing and the heat dissipation assembly. The heat dissipation assembly defines a second air inlet and outlet. The first air inlet, the second air inlet, the second air outlet and the first air outlet communicate with each other. The heat dissipation assembly draws air across itself from the two air inlets, and expels the air from the two air outlets. The filter structure covers the second air inlet and defines a plurality of very small holes which function to filter dust out from the incoming air.

Abstract: A heat dissipation device includes a conductive plate and a fastener. The fastener includes a fastening element and an elastic element coiled around the fastening element. The fastening element includes a pole portion and a head portion formed at one end of the pole portion. The conductive plate defines a supporting portion through the conductive plate. The supporting portion defines a hole, an upper groove and a lower groove communicating with one another. The upper groove and the lower groove are coaxial with each other. A flange protrudes from a circumference of the pole portion. The pole portion enters the upper groove. The flange abuts a bottom of the conductive plate and is received in the lower groove. The elastic element elastically abuts the top of the conductive plate.

Abstract: A heat dissipation device includes a conductive plate and a fastener. The fastener includes a fastening element and an elastic element coiled around the fastening element. The fastening element includes a pole portion and a head portion formed at one end of the pole portion. The conductive plate defines a supporting portion through the conductive plate. The supporting portion includes a hole and a groove communicating with the hole. A flange protrudes from a circumference of the pole portion. The pole portion enters the groove. The flange abuts a bottom of the conductive plate. The elastic element elastically abuts the top of the conductive plate.

Abstract: An exemplary electronic device includes a container, a fan assembly and a duct received in the container. The fan assembly includes a centrifugal fan and a fin group thermally contacting an electronic component in the container. An air passage is defined between each adjacent fins of the fin group. An inner side of the fin group is mounted on an outlet of the centrifugal fan. A bottom surface of the fin group and an inner surface of the container cooperatively define a first channel therebetween. The duct includes an inlet and a first outlet. Airflow guided by the centrifugal fan flows through the duct and the first channel to cool a bottom end of the fin group, then is absorbed into the centrifugal fan from an inlet of the centrifugal fan, and then flow through the air passages of the fin group to cool a central portion the fin group.

Abstract: An electronic device includes a casing, a fan, and a heat sink. The casing defines a plurality of through holes therein. The fan defines air outlet at one side thereof facing the through holes of the casing. The air outlet includes a first portion and a second portion. Air pressure in the first portion is larger than air pressure of the second portion. The heat sink includes a first fin set arranged on the first portion and a second fin set arranged on the second portion. A first passage is defined between each two neighboring first fins. A second passage is defined between each two neighboring second fins. A width of the second passage is less than that of the first passage.

Abstract: A heat dissipation device includes a heat pipe and a fin set. The fin set includes a plurality of fins. Each of the fins includes a body, a first flange vertically extending from a top side of the body, and a second flange vertically extending from a bottom side of the body. The first flange has a first edge abutting a front neighboring fin and a second edge spaced to the first edge to define a slit. The first flange forms an extending portion extending from the second edge to define a gap between the extending portion and the body of the front neighboring fin. Each of the extending portions is soldered to the body of the front neighboring fin by solder filled in the gap between the extending portion and the body of the front neighboring fin from the slit.

Abstract: A heat dissipation device includes a fan and a heat sink located at the air outlet of the fan. The heat sink includes a first fin set arranged at a central portion of the air outlet, and two second fin sets respectively arranged at a side portion of the air outlet. The first fin set includes a plurality of first fins with a first passage defined between each two neighboring first fins. Each of the second fin sets includes a plurality of second fins with a second passage defined between each two neighboring second fins. Each of the second fin sets defines an undercut near the air outlet of the fan. The first passages communicate with the central portion of the air outlet of the fan. Each of the undercuts of the second fin sets communicates with corresponding side portion and corresponding second passage.

Abstract: An electronic device includes a casing, a fan, and a heat sink. The casing defines a plurality of through holes therein. The fan defines air outlet at one side thereof facing the through holes of the casing. The air outlet includes a first portion and a second portion. Air pressure in the first portion is larger than air pressure of the second portion. The heat sink includes a first fin set arranged on the first portion and a second fin set arranged on the second portion. A first passage is defined between each two neighboring first fins. A second passage is defined between each two neighboring second fins. A width of the second passage is less than that of the first passage.

Abstract: A heat dissipation device includes a fan and a heat sink located at the air outlet of the fan. The heat sink includes a first fin set arranged on a side portion of the air outlet, a second fin set arranged on a central portion of the air outlet and a third fin set. The first fin set includes a plurality of first fins with a first passage is defined between each two neighboring first fins. The second fin set includes a plurality of second fins with a second passage defined between each two neighboring second fins, a width of the second passage is less than that of the first passage. The third fin set includes a plurality of third fins. Each third fin is arranged between two neighboring first fins and divides an outer portion of the first passage away from the outlet of the fan into two third passages.

Abstract: A heat dissipation device includes a housing, a fan mounted within the housing, a fin assembly fixed to the housing and heat pipes attached on the fin assembly. The housing includes a panel and a sidewall extending upwardly from a periphery of the panel. The fin assembly includes first fins and second fins alternately arranged on the panel. The first fins and the second fins each include a plate, an upper flange and a lower flange extending from a top side and a bottom side of the plate, respectively. Each second fin defines a slot in a lateral side of the plate thereof adjacent to the fan. Every two adjacent first fin and second fin define a channel therebetween. Two adjacent channels communicate with each other at inlets thereof via the slot, and separated from each other at outlets thereof via a second fin.