Abstract: A remote coding setting method is to be implemented by a receiver of a ceiling fan, and includes steps of: (A) when receiving a setting signal during a predetermined time period, obtaining a code length of the setting signal; (B) retrieving, from pre-stored coding data, a piece of coding format information that corresponds to the code length; (C) setting a fan coding format based on the piece of coding format information; and (D) when receiving a control signal after the predetermined time period, decoding the control signal based on the fan coding format, and controlling operation of the ceiling fan based on a result of the decoding.

Abstract: A control system for a lighting device includes a driving circuit, a current detection circuit and a control unit. The driving circuit is configured to output a driving signal for driving the lighting device to emit light. The current detection circuit is configured to detect a current of the lighting device. The control unit is configured to control the driving circuit to gradually reduce an average voltage across the successive wave periods of the driving signal for reducing brightness of the light emitted by the lighting device. In response to determining that the current of the lighting device corresponds to an unstable condition, the control unit obtains critical dimming information related to the driving signal that is outputted when the unstable condition of the lighting device occurs, and then obtains a limiting threshold for adjusting the brightness of the lighting device based on the critical dimming information.

Abstract: A method for manufacturing a plastic ceiling fan blade includes: winding a reinforcing member around at least one mounting member; placing the reinforcing member and the at least one mounting member together into an injection mold; and injecting a plastic material into the injection mold to form a blade body so as to allow the at least one mounting member to be embedded inside the blade body, and the reinforcing member to be fixedly mounted in an inner portion of the blade body.

Abstract: A plastic ceiling fan blade includes a blade unit and a reinforcing member. The blade unit has a mounting end, a blade tail end that is opposite to the mounting end in a longitudinal direction, and at least one mounting portion that is adjacent to the mounting end. The blade unit defines a blade total length in the longitudinal direction from the mounting end to the blade tail end. The reinforcing member is disposed on the blade unit, is adjacent to the mounting end, and extends toward the blade tail end. The reinforcing member has one end that faces the blade tail end and that is closer to the blade tail end than the at least one mounting portion is.

Abstract: A ceiling fan includes a carrier unit, a motor, a fan body, a light sensing unit, and a control unit. The light sensing unit emits a light signal, receives the light signal, and outputs a sensing signal related to a round trip time of the light signal. The control unit performs a safety procedure of: calculating a distance and a moving speed of an object relative to the ceiling fan based on the sensing signal; controlling the motor to rotate the fan body at a predetermined rotational speed when the moving speed is greater than a speed threshold or when the distance is between a first distance threshold and a second distance threshold; and controlling the motor to stop rotating the fan body when the distance is smaller than the second distance threshold.

Abstract: A remote control system for forward/reverse rotation of a fan includes a remote control and a forward-reverse rotation control unit. The remote control includes an operation module, and a first control module capable of outputting an operation signal which corresponds to an operation condition of the operation module. The operation signal can switch between a forward rotation mode and a reverse rotation mode to correspond to the operation condition of the operation module. The forward-reverse rotation control unit includes a double-pole relay that is controllable to switch between a first mode and a second mode and that is used to provide electric power to the fan, and a second control module that controls the double-pole relay to switch modes according to the operation signal, thereby making a rotational direction of the fan correspond to the operation of the operation module.

Abstract: A zero-crossing detector to be installed in a ceiling fan includes: a first terminal; a second terminal; and a rectifier, an adjustor and a feedback generator that cooperatively generate a current signal based on an AC voltage between the first and second terminals. The current signal has a non-zero magnitude when the AC voltage causes a potential at the first terminal to be greater than a potential at the second terminal, and has a zero magnitude when otherwise. An average of the non-zero magnitude of the current signal is greater when the adjustor is in a working state than when the adjustor is in a power saving state. The feedback generator generates a feedback signal based on the current signal.

Abstract: A zero-crossing detector to be installed in a ceiling fan includes: a first terminal; a second terminal; and a rectifier, an adjustor and a feedback generator that cooperatively generate a current signal based on an AC voltage between the first and second terminals. The current signal has a non-zero magnitude when the AC voltage causes a potential at the first terminal to be greater than a potential at the second terminal, and has a zero magnitude when otherwise. An average of the non-zero magnitude of the current signal is greater when the adjustor is in a working state than when the adjustor is in a power saving state. The feedback generator generates a feedback signal based on the current signal.

Abstract: A dual-motor driving device includes an input axle, a sleeve that is rotatable relative to the input axle, two rotors, a axle one-way clutch and a first rotor one-way clutch. Each of the rotors surrounds the sleeve. The axle one-way clutch is mounted between the input axle and the sleeve so that rotation of the input axle relative to the sleeve in a first rotating direction is prevented, and that rotation of the input axle relative to the sleeve in a second rotating direction opposite to the first rotating direction is permitted. The first rotor one-way clutch is mounted between the sleeve and one of the rotors so that rotation of the one of the rotors relative to the sleeve in the first rotating direction is prevented, and that rotation of the one of the rotors relative to the sleeve in the second rotating direction is permitted.

Abstract: A system for controlling operation of a ceiling fan is provided. The ceiling fan includes a fan device and a light device, and can be operated via a user operation module that is to be operated by direct operation, or a wireless receiver module that receives a wireless control signal. Within a predetermined control duration from the time of activation, the ceiling fan can, upon receipt of an operation signal from the user operation module or a wireless control signal from the wireless receiver module, switch to operate in a mode where the ceiling fan is controlled via one of the user operation module and the wireless receiver module that corresponds to the signal received thereby.

Abstract: A remote control system for forward/reverse rotation of a fan comprises a remote control and a forward-reverse rotation control unit. The remote control includes an operation module, a wireless output module, and a first control module that is electrically connected to the operation module and the wireless output module and that is capable of outputting, through the wireless output module, an operation signal which corresponds to an operation condition of the operation module. The operation signal can switch between a forward rotation mode and a reverse rotation mode to correspond to the operation condition of the operation module.

Abstract: A control method is to be implemented by a control device, and includes: (A) storing a database that contains control parameter sets which respectively correspond to different types of sensorless BLDC motors; (B) detecting a resistance and an inductance of a sensorless BLDC motor of a ceiling fan, and searching the database, based on at least the detected resistance and the detected inductance, for one of the control parameter sets that corresponds to the sensorless BLDC motor of the ceiling fan; (C) detecting a back-EMF of the sensorless BLDC motor of the ceiling fan; and (D) generating a driver control signal based on said one of the control parameter sets and the detected back-EMF to drive the sensorless BLDC motor of the ceiling fan.

Abstract: A control method is to be implemented by a control device, and includes: (A) storing a database that contains control parameter sets which respectively correspond to different types of sensorless BLDC motors; (B) detecting a resistance and an inductance of a sensorless BLDC motor of a ceiling fan, and searching the database, based on at least the detected resistance and the detected inductance, for one of the control parameter sets that corresponds to the sensorless BLDC motor of the ceiling fan; (C) detecting a back-EMF of the sensorless BLDC motor of the ceiling fan; and (D) generating a driver control signal based on said one of the control parameter sets and the detected back-EMF to drive the sensorless BLDC motor of the ceiling fan.

Abstract: A motor housing assembly for a ceiling fan includes a lower housing member, an upper housing member, and a fastener. The lower housing member includes a bottom wall and a first surrounding wall that extends upward from the bottom wall and that has an outward surface formed with an outer thread. The upper housing member includes a top wall and a second surrounding wall that extends downward from the top wall, that surrounds the first surrounding wall, and that has an inside surface formed with an inner thread. The fastener is positioned between the second surrounding wall and the first surrounding wall, and prevents relative rotation between the lower housing member and the upper housing member.

Abstract: A fan control system includes an input unit receiving a domestic power signal, an operation controller, a first converter connected to the input unit and the operation controller, and a second converter connected to the first converter and a fan. Upon receipt of an operation signal outputted by the operation controller, the first converter switches from a normal mode where the domestic power signal is directly outputted as a converted power signal, to a converting mode where the domestic power signal having an attribute thereof varied for a preset duration is outputted as the converted power signal. The second converter outputs an output signal based on the converted power signal for controlling rotational speed of the fan.

Abstract: A ceiling fan motor housing includes a bottom cover member, a hollow housing member, and a plurality of screws. The bottom cover member is formed with a plurality of threaded holes. The housing member is formed with a plurality of L-shaped positioning members extending from a bottom end thereof. Each of the positioning members has a vertical portion which is connected to the bottom end of the housing member and a horizontal portion which extends inwardly from a bottom end of the vertical portion, supports the bottom cover member, and is formed with a positioning hole. The screws respectively extend through the positioning holes of the positioning members to respectively engage the threaded holes of the bottom cover member.

Abstract: An outer rotor type motor includes a rotating unit and a fixing unit. The rotating unit includes an inner surrounding wall surrounding a stationary shaft of the fixing unit and an outer surrounding wall surrounding the inner surrounding wall. A spool support is connected to the stationary shaft. Spools are connected to the spool support, surround the stationary shaft and are wound by windings. Outer magnetic members are disposed on the outer surrounding wall. Inner magnetic members are disposed on the inner surrounding wall. When the windings are energized, the inner and outer magnetic members are rotated about the stationary shaft so that the rotating unit is rotated relative to the fixing unit.

Abstract: A fan control system includes an input unit receiving a domestic power signal, an operation controller, a first converter connected to the input unit and the operation controller, and a second converter connected to the first converter and a fan. Upon receipt of an operation signal outputted by the operation controller, the first converter switches from a normal mode where the domestic power signal is directly outputted as a converted power signal, to a converting mode where the domestic power signal having an attribute thereof varied for a preset duration is outputted as the converted power signal. The second converter outputs an output signal based on the converted power signal for controlling rotational speed of the fan.

Abstract: An outer rotor type motor includes a rotating unit and a fixing unit. The rotating unit includes an inner surrounding wall surrounding a stationary shaft of the fixing unit and an outer surrounding wall surrounding the inner surrounding wall. A spool support is connected to the stationary shaft. Spools are connected to the spool support, surround the stationary shaft and are wound by windings. Outer magnetic members are disposed on the outer surrounding wall. Inner magnetic members are disposed on the inner surrounding wall. When the windings are energized, the inner and outer magnetic members are rotated about the stationary shaft so that the rotating unit is rotated relative to the fixing unit.

Abstract: A ceiling fan motor housing includes a bottom cover member, a hollow housing member, and a plurality of screws. The bottom cover member is formed with a plurality of threaded holes. The housing member is formed with a plurality of L-shaped positioning members extending from a bottom end thereof. Each of the positioning members has a vertical portion which is connected to the bottom end of the housing member and a horizontal portion which extends inwardly from a bottom end of the vertical portion, supports the bottom cover member, and is formed with a positioning hole. The screws respectively extend through the positioning holes of the positioning members to respectively engage the threaded holes of the bottom cover member.