Abstract: An impeller of a cooling fan includes a metal base, a shaft and a plurality of plastic blades. The metal base includes a shaft-coupling portion, a first assembling portion apart from the shaft-coupling portion, and a flat portion between the shaft-coupling portion and the first assembling portion, wherein the flat portion oppositely has a first flat surface and a second flat surface, and a permanent magnet is mounted on the first flat surface. The shaft has a fixing end coupled with the shaft-coupling portion of the metal base. Each of the plastic blades has a second assembling portion coupled with the first assembling portion of the metal base.

Abstract: A motor system comprises a motor and a driving module. The motor has a plurality coil units not electrically connected to each other. The driving module has a control unit, a driving unit and a circuit board. The control unit is coupled to the driving unit. The driving unit has a plurality of driving circuits. The number of the driving circuits is the same as the number of the coil units. Each of the driving circuits is coupled to a respective one of the coil units so as to form a plurality of independent coil loops. The control unit and the driving unit are mounted on the circuit board.

Abstract: A lamp includes a housing, a heat sink, a cooling fan and a light-emitting module. The housing has an assembling opening and an electrical connection member on two ends thereof, wherein the housing further comprises an inner wall and a portion of the inner wall adjacent to the assembling opening is an air-guiding wall. The heat sink has a base plate disposed at the assembling opening of the housing, wherein the base plate has at least one partitioning board defining an air channel of the heat sink. A first air-guiding opening is formed between the air-guiding wall and the at least one partitioning board, and a second air-guiding opening is formed between the air channel and the air-guiding wall. The cooling fan is coupled with the heat sink and has an impeller. The light-emitting module is coupled with the base plate of the heat sink.

Abstract: An insulation bobbin unit of a stator includes first and second insulation bobbins. The first insulation bobbin has a first body and a plurality of first extension members. The first body has a first assembly hole. Each extension member has a first wound portion having a first top plate and one first side wall. The first top plate has a smaller thickness than that of the first side wall. The second insulation bobbin has a second body and a plurality of second extension members. Each second extension member includes a second wound portion having a second top plate and one second side wall. The first side wall is aligned with one edge of the second top plate that is not mounted with the second side wall, and the second side wall is aligned with one edge of the first top plate that is not mounted with the first side wall.

Abstract: A fan housing includes a plastic casing having a skirt-board and a lateral wall. The skirt-board includes inner and outer peripheries spaced in a radial direction while the plastic casing further includes a first coupling portion formed along the inner periphery of the skirt-board. The lateral wall extends from a face of the skirt-board along the outer periphery of the skirt-board in an axial direction perpendicular to the radial direction. The fan housing includes a metal frame having a shaft coupling member and a second coupling portion. The second coupling portion of the metal frame is coupled to the first coupling portion of the plastic casing. A motor can be mounted to the metal frame of the fan housing, and an impeller can be rotatably coupled to the motor to form a heat dissipating fan.

Abstract: A lamp including the following elements is provided. A housing has an assembling opening and an electrical base on two ends thereof, wherein the housing has an inner wall and a portion of the inner wall adjacent to the assembling opening is an air-guiding wall. A cooling fan has a casing disposed at the assembling opening and forming an air channel, a fan wheel rotatably arranged in the air channel, and at least one partitioning board between the air-guiding wall and the air channel so as to define at least one first air-guiding opening and at least one second air-guiding opening. A light-emitting module is arranged in the housing and opposite to the fan wheel. Accordingly, the present lamp does not require forming any air inlet or air outlet on the housing, and thus provides a simplifier structure.

Abstract: A light device including a housing, a cooling unit and a light emitting unit is disclosed. The housing has an assembly opening and an electrical base. The cooling unit is in the housing and has a heat dissipating seat, a driving member electrically connecting with the electrical base, and a fan wheel rotatably coupled with the driving member. The heat dissipating seat has a lateral wall coupled with the housing, an inner air channel formed in the lateral wall, a base portion arranged in the inner air channel for the driving member to be mounted, and at least one through hole penetrating the base portion and communicating with the inner air channel. The light emitting unit is coupled with the heat dissipating seat and electrically connects with the electrical base. An outer air channel is formed between the lateral wall and the housing.

Abstract: A cooling system for use in a portable communication device includes a detection module, a cooling module and a central control module. The detection module detects whether the portable communication device is in a communication state and generates an acknowledgement signal. The cooling module includes a fan and a driving unit. The central control module is electrically coupled to the detection module and the driving unit, detects an operational temperature of said device, and generates a detected temperature value corresponding to the detected operational temperature. The central control module controls the fan to operate in a silent mode or a cooling mode. The central control module controls the fan to operate in the silent mode if the central control module receives the acknowledgement signal when the detected temperature value is smaller than a temperature threshold value, else the central control module controls the fan to operate in the cooling mode.

Abstract: A motor includes a base, a stator, and a rotor. The base includes a shaft tube having an open end and receiving an inner assembly. The stator is mounted to an outer periphery of the shaft tube. The rotor is rotatably coupled to the inner assembly. The stator includes an insulating bobbin unit having an extension extending in a radial direction to the open end of the shaft tube. The extension includes an engagement hole. The shaft tube includes a positioning member having an engaging section engaged in the engagement hole. The insulating bobbin unit is fixed by an end of the engaging section. The engagement stability of the stator is enhanced by engagement of the positioning member of the base and the insulating bobbin unit.

Abstract: A fan comprises a housing, a fan, a heat sink, and a light emitting element. The housing has a compartment and forms an opening. The fan is mounted inside the compartment of the housing and has a frame and an impeller mounted inside the frame. A first air-guiding channel is formed between a peripheral surface of the frame and an inner peripheral surface of the housing. The heat sink is coupled to the fan and has a first surface and a second surface, with the first surface facing the impeller. Also, a second air-guiding channel is formed between an outer periphery of the heat sink and an inner surface of the frame. The light-emitting element is disposed on the second surface of the heat sink. In such arrangement, used components and structural complexity of the lamp can be significantly reduced so as to be convenient in assemblage.

Abstract: The invention discloses a lamp including a lampshade, a cooling module, a light-emitting element and a circuit board. The lampshade includes an opening and a base. The lampshade forms a chamber. The lampshade is completely closed between the opening and the base. The cooling module includes a cooling fan fixed in the chamber while at least one air-guiding gap is formed between the cooling module and the lampshade. The light-emitting element is coupled with the cooling module. The circuit board has a layout surface mounted with a plurality of electronic components. The inner surface of the lampshade forms an air-guiding face. The layout surface, the air-guiding face and the cooling fan jointly constructs an air channel. The layout surface and the electronic components of the circuit board face the opening of the lampshade. At least one of the electronic components is located in the air channel.

Abstract: A series-connected motor unit includes a first motor, a second motor and a separation member. The first motor has a first circuit board, and the second motor has a second circuit board. The separation member has a first face and a second face opposite to the first face. The first face abuts against the first circuit board, and the second face abuts against the second circuit board.

Abstract: A lamp includes a heat dissipater having a base and an engaging member. The base includes a first air guiding portion and a fixing portion. The engaging member is mounted to an outer periphery of the base. A second air guiding portion is formed between the engaging member and the base. A lighting element is mounted to the base of the heat dissipater. A housing is engaged with the engaging member of the heat dissipater. The housing and the heat dissipater together define a compartment in communication with the first and second air guiding portions. A cooling fan is mounted to the fixing portion of the base. A circuit board is mounted in the compartment and electrically connected to the lighting element and the cooling fan. The circuit board is electrically connected to an electrically conductive member having an end extending out from the housing.

Abstract: An impeller includes a metal base plate, a shaft and a plurality of plastic blades. The metal base plate includes a shaft-coupling portion, a peripheral portion, and first and second surfaces. The first surface faces away from the second surface in a first direction, the second surface faces away from the first surface in a second direction. The metal base plate is flat between the shaft-coupling portion and the peripheral portion. The first surface has a permanent magnet. The shaft has a fixing end coupled with the shaft-coupling portion, as well as a free end extending axially in the first direction. Each plastic blade has a coupling portion coupled with the peripheral portion, as well as an air-driving portion axially extending in the second direction. The impeller may be rotatably coupled with a driving module. The driving module is installed in a fan frame to form an advection fan.

Abstract: A lamp comprises a housing, an inner shell, a fan, a heat sink and a lighting module. The housing has a first compartment and a first opening on an end thereof. The inner shell is adapted to be received in the first compartment and has a second compartment and a second opening on an end thereof, wherein the second opening is aligned with the first opening. An air channel is formed between the housing and the inner shell in the first compartment. The inner shell further comprises a through-hole allowing the first compartment to communicate with the second compartment. The fan is located adjacent to the through-hole and has two air-flowing sides for drawing air in and out of the lamp. The heat sink has a bottom plate with one face facing the fan. The lighting module is adapted to be coupled to another face of the bottom plate.

Abstract: A packaging structure for plural bare chips includes a substrate, a plurality of bare light-emitting chips, and a transparent light guide. The substrate has a supporting surface. The bare light-emitting chips are disposed on the supporting surface of the substrate. The transparent light guide covers and seals up the bare light-emitting chips, with a side of the transparent light guide facing away from the supporting surface forming a light-outputting layer with a light gathering member. Alternatively, a reflective layer can be arranged on the supporting surface and covered by the transparent light guide. Accordingly, a packaging structure for plural bare chips with high illuminous efficiency, high heat-dissipating efficiency, and low cost of manufacture is provided.

Abstract: A lamp comprises a housing, an inner shell, a fan, a heat sink and a lighting module. The housing has a first compartment and a first opening on an end thereof. The inner shell is adapted to be received in the first compartment and has a second compartment and a second opening on an end thereof, wherein the second opening is aligned with the first opening. An air channel is formed between the housing and the inner shell in the first compartment. The inner shell further comprises a through-hole allowing the first compartment to communicate with the second compartment. The fan is located adjacent to the through-hole and has two air-flowing sides for drawing air in and out of the lamp. The heat sink has a bottom plate with one face facing the fan. The lighting module is adapted to be coupled to another face of the bottom plate.

Abstract: A motor structure includes a housing having a shaft tube receiving a shaft retaining assembly. The shaft tube includes a positioning member on an outer periphery thereof. A rotor includes a shaft rotatably extending through the bearing. A stator is mounted around the shaft tube, couples with the positioning member, and includes a bobbin having an abutting portion pressing a top face of the shaft retaining assembly by a free end thereof. Specifically, the positioning member is distant from the top face by a first distance in an axial direction of the shaft tube, the abutting portion is made of elastic material, the positioning member is distant from the free end by a second distance in an axial direction of the assembling hole is defined, and the second distance is smaller than the first distance when the stator is separate from the shaft tube.

Abstract: A motor includes a base, a stator, a rotor, a circuit board and a heat-conducting insulator. The base includes a cooling plate. The stator is coupled to the base. The rotor is rotatably coupled to the base and aligned with the stator. The circuit board is received in the base and electrically connected to the stator. The heat-conducting insulator is disposed between the cooling plate and the circuit board, and abuts with the cooling plate and one face of the circuit board.

Abstract: A rotation direction control method of a cooling fan is disclosed. The rotation direction control method includes a detection step, a determination step and a driving step. The detection step receives a temperature control signal from a temperature detection unit by a rotation direction control unit when a predetermined dust-expelling time period begins. The determination step determines whether a detected temperature is higher than a predetermined value based on the temperature control signal by the rotation direction control unit. The driving step controls the rotation direction control unit to keep outputting a cooling signal so as to drive a motor of the cooling fan for a cooling operation when the determination of the determination step is positive.