Abstract: A lamp includes a housing, a cooling module and a light emitting diode. The housing has an assembling opening and an electrical connection member on two ends of the housing, wherein an inner surface of the housing defines a receiving room, and a part of the inner surface of the housing adjacent to the assembling opening is an air-guiding wall. The cooling module is disposed at the assembling opening of the housing to form at least one air channel between the cooling module and the air-guiding wall, wherein the cooling module has an air-guiding passage communicating with the receiving room of the housing. The light emitting diode is coupled with the cooling module. Therefore, there is no air inlet or outlet formed on the housing of the LED lamp, so as to provide a simplified structure and to maintain the exterior integrity of the LED lamp.

Abstract: A lamp includes a lighting module providing illumination, a control unit, and a detecting unit. The control unit is connected or not connected to the lighting module. The detecting unit is coupled to the control unit. The detecting unit detects operational statuses of the lighting module and sends a detection result to the control unit. The control unit controls the lighting module or an alarm unit to enter an alarm mode based on the detection result. A user can immediately know the operational statuses by the alarm unit and take necessary actions to assure normal operation of the lamp.

Abstract: A fan has a housing with a wire-guiding slot. One of plural connecting members is taken as a line fixed portion having a linking end facing the wire-guiding slot, with the linking end connecting to a section of a peripheral wall of the housing and the section axially aligned with the wire-guiding slot of the housing. A base is coupled to the housing. A power line has one end connected with the connection port and the other end extended beyond the housing via the wire-guiding slot. An impeller is rotatably mounted inside of the housing. Therefore, the line fixed portion can be close to the wire-guiding slot. Thus, the power line can be extended straight through the wire-guiding slot. A distance between the connection port and the wire-guiding slot is shortened to enhance assembling convenience of the power line.

Abstract: A stator for a brushless DC motor includes a cylindrical member and a positioning member. The cylindrical member is formed by a plurality of metal wires. Each metal wire includes two ends each forming a terminal. The cylindrical member includes first and second ends separated along a longitudinal axis. The positioning member includes an annular body received in the first end of the cylindrical member and separated from the second end of the cylindrical member along the longitudinal axis. The positioning member maintains a shape of the cylindrical member. The stator can be mounted in a space defined by a housing and a base engaged with the housing, forming a brushless DC motor. A bearing and a circuit board are mounted in the space. The bearing rotatably supports a shaft. A permanent magnet is mounted to the shaft and aligned with the stator.

Abstract: A fan system including a motor with a coil, a storage unit, a driver, and a buffer circuit is provided. The coil module has a first connection terminal and a second connection terminal. The storage unit electrically couples with a voltage source, stores electrical energy when the voltage source is available, and releases the stored electrical energy to carry out a brake operation when the voltage source is unavailable. The driver electrically couples with the first and second connection terminals of the coil module to control a direction of an inductor current passing through the coil module. The buffer circuit electrically couples with the coil module. In the brake operation, the buffer circuit operates to form a transient potential between the first and second connection terminals of the coil module and to consume electrical energy of the inductor current, for gradually stopping the motor in a buffering time period.

Abstract: A cooling module assembly method includes forming at least one through-hole on a circuit board; coupling the circuit board to a heat dissipating unit so that a face of the circuit board is coupled to a coupling face of the heat dissipating unit; filling the at least one through-hole with metal solders; fixing at least one heat-generating element to another face of the circuit board, with the at least one heat-generating element aligned with and covering the at least one through-hole; and soldering the at least one heat-generating element and the heat dissipating unit together by melting the metal solders in the at least one through-hole.

Abstract: A DC fan of an inner rotor type includes a housing having a frame defining a compartment. A rotor is rotatably received in the compartment. The rotor includes a shaft having an outer periphery and a permanent magnet fixed to and around the outer periphery of the shaft. A stator is fixed in the compartment of the frame and surrounds the rotor. The stator includes a plurality of magnetic pole faces facing an outer periphery of the permanent magnet. An air gap is formed between each magnetic pole face and the permanent magnet. The stator further includes at least one coil. An impeller is coupled to an end of the shaft. A drive control unit is mounted in the compartment and electrically connected to the at least one coil of the stator.

Abstract: A lamp includes a heat conducting member, a light-emitting module, a housing and a cooling fan. The heat conducting member has a first face and a second face opposite to the first face. The light-emitting module is coupled with the first face. The housing is coupled with the heat conducting member and has a terminal opening, wherein first and second air-guiding openings are formed between the terminal opening and the heat conducting member. The housing has an inner circumferential wall. An air-flowing room is formed between the inner circumferential wall and the second face. The air-flowing room communicates with the first air-guiding opening and the second air-guiding opening. The cooling fan is disposed at the first or second air-guiding opening and has first and second air-driving openings, wherein the first air-driving opening faces the air-flowing room and the second air-driving opening faces the first or second air-guiding opening.

Abstract: A fan device with improved speed control module includes a stator, a rotor, and a speed control module. The stator has a driving unit outputting currents for the stator to generate alternative magnetic fields and thus turn the rotor. The speed control module includes a control unit and a speed adjusting circuit, with the control unit generating a control command for the driving unit and further outputting a state signal for the speed adjusting circuit to control whether a PWM signal enters the control circuit or not.

Abstract: A motor includes a base, a stator and a rotor. The base is equipped with a non-metal shaft tube having an outer circumferential wall and an inner circumferential wall opposite to the outer circumferential wall. An opening is formed on an end of the non-metal shaft tube. At least one bearing is fitted inside the non-metal shaft tube and has an axial hole. A plurality of close-fitting portions is formed between an outer circumferential surface of the bearing and the inner circumferential wall of the non-metal shaft tube. An adjustment gap is formed between each two adjacent close-fitting portions within a circumference of the non-metal shaft tube. The stator is equipped on the base. The rotor has a shaft coupled with the axial hole of the at least one bearing.

Abstract: A fan frame structure includes a plastic frame and a metal fixing frame, in which at least two support arms are disposed on the rim of the fixing frame and extended outwardly therefrom, the outwardly extended distance of each support arm shall be beyond the range of an accommodation space of the frame, the portion of the support arm beyond the accommodation space in integrally enclosed by the plastic material of the frame.

Abstract: A motor includes a balancing member having a surface, a shaft coupling portion and a magnetically conductive portion. A stator is coupled to the balancing member. A rotor includes a hub, a shaft, and a permanent magnet. The shaft and the permanent magnet are mounted inside the hub. The shaft is rotatably coupled to the shaft coupling portion. The permanent magnet includes a magnetically attracting face aligned with the magnetically conductive portion of the balancing member. The magnetically attracting face and the magnetically conductive portion attract each other to maintain stable rotation of the rotor while providing a simplified structure. The balancing member can be interconnected to a housing, and the hub can include a plurality of blades to form a heat dissipating fan. When the rotor rotates, air currents are drawn by the blades to a heat source for heat dissipating purposes.

Abstract: A rotation assembly for a motor comprises a hub, a shaft, a buckling member and a fixing plate. The hub has a through-hole and an assembling portion. The through-hole has a first opening and a second opening opposing to the first opening. The assembling portion is located surrounding the first opening. The shaft is inserted into the through-hole of the hub and has a first end and a second end, wherein a fixing slot and a restrain portion are located between the first end and the second end. The buckling member is coupled to the fixing slot of the shaft so as to prevent the shaft from disengaging from the hub. The fixing plate is coupled to the assembling portion of the hub and has an abutting portion abutting with the restrain portion of the shaft for preventing the shaft from rotating about the hub.

Abstract: A coil unit for a motor stator includes a plurality of layout layers. At least one coil and a conductive portion electrically connected to the at least one coil are formed on a surface of each layout layer. The conductive portions of two adjacent layout layers are electrically connected to each other. An insulting layer is provided between two adjacent layout layers. The coil unit can be coupled to a face of a substrate to form a motor stator with reduced axial height and reduced volume.

Abstract: A fan frame structure includes a plastic casing and a metal fixing frame. The plastic casing and the metal fixing frame are provided for an axial flow fan or a blower fan. The plastic casing includes a bottom having a plurality of first fixing portions. The metal fixing frame includes a base with a shaft tube seat in a center thereof. The base includes a plurality of second portions each engaged with one of the first fixing portions. Since the plastic casing is made of inexpensive plastic material, the manufacturing costs are cut. The metal fixing frame provides sufficient structural strength and desired heat dissipating effect.

Abstract: A heat dissipating fan includes a housing having an air inlet and an air outlet between which an air passageway is formed. A fixed seat is provided in the air passageway and includes first positioning holes. A magnetically conductive first casing includes a first outer wall, a first annular lip extending radially outward from an end of the first outer wall and having second positioning holes aligned with the first positioning holes, and a first support on the other end of the first outer wall. A second casing includes a second outer wall, a second annular lip extending radially outward from an end of the second outer wall and having third positioning holes aligned with the first positioning holes, and a second support on the other end of the second outer wall. Fasteners extend through the first, second and third positioning holes. A motor is mounted in the first and second casings.

Abstract: A miniature heat-dissipating fan includes a stator and a rotor. The stator has a first leakage flux absorber, a coil layer arranged on the first leakage flux absorber, and a hole. The coil layer has a plurality of coils, and the hole passes through the first leakage flux absorber and the coil layer. The rotor has an impeller, a second leakage flux absorber and a permanent magnet. The second leakage flux absorber and the permanent magnet are attached to a bottom of the impeller, such that the rotor is rotatably coupled to the stator. Consequently, magnetic flux leakage under the stator is prevented to assure that electromagnetic interference will never be caused, and an overall axial thickness of the miniature heat-dissipating fan is reduced by the configuration of the stator.

Abstract: A motor includes a base, a stator and a rotor. The base is equipped with a shaft tube having an outer circumferential wall. The stator is coupled with the shaft tube of the base and has an assembly hole. A plurality of close-fitting portions is formed between an inner circumferential wall of the assembly hole and the outer circumferential wall of the shaft tube, and an adjustment gap is formed between each two adjacent close-fitting portions. The rotor has a shaft rotatably coupled within the shaft tube of the base.

Abstract: A small sized heat dissipating fan includes a housing, a stator and a rotor. The housing includes a carrying base to hold the stator and rotor. The stator includes a magnetizing member having a plurality of coils and a circuit board electrically connecting to the coils and having a driving circuit and a speed adjuster. The driving circuit, the speed adjuster and the coils electrically connect to each other. The rotor includes a shaft, an impeller fixed to one end of the shaft, and an annular magnet. The other end of the shaft extends through the magnetizing member. The shaft is rotatably coupled to the stator. The annular magnet is mounted to an inner periphery of the impeller and faces the magnetizing member of the stator. Consequently, by adjustment of resistance of the speed adjuster, the rated rotational speed of the heat dissipating fan can be changed.