Light fan control device and light fan

Abstract

The utility model provides a kind of lamp fan control device and lamp fan, it is related to lamp fan technical field.The lamp fan control device includes: power panel and drive board;Wherein, power panel is set in the bell of lamp fan, drive board is set in the upper cover or lower cover of lamp fan;The input end of power panel is connected with alternating current power supply, the output end of power panel is connected with the input end of drive board by wire through hanger rod;The first output end of drive board is used to drive LED light source to emit light, and the second output end of drive board is used to drive fan motor to rotate.In the utility model, lamp fan driving circuit is split into power panel and drive board two parts, respectively set in bell and upper cover or lower cover, only power cord passes through hanger rod, and wire quantity is less, easy to install.

Description

Technical Field

[0001] This utility model relates to the field of lamp fan technology, and in particular to a lamp fan control device and a lamp fan. Background Technology

[0002] A light fan is a practical appliance that combines lighting and airflow functions, commonly found in homes, offices, and other places. It combines the ventilation and cooling capabilities of a fan with the lighting needs of a lamp, saving space while providing cool airflow and suitable light in hot environments. It is especially suitable for summer use, combining functionality and convenience, and has thus gained widespread application.

[0003] refer to Figure 1 A typical light fan includes: a pendant bell 5, a hanging rod 2, an upper cover 6, a turntable 7, fan blades 8, a fan motor 4, a lower cover 9, and an LED light source 3. The pendant bell 5 is used to fix the light fan, and the hanging rod 2 is used to connect the pendant bell 5 and the main body of the light fan, transmitting the suspension force and maintaining a suitable distance between the main body of the light fan and the ceiling. The turntable 7 drives the fan blades 8 to rotate under the drive of the fan motor 4. The upper cover 6 is located above the turntable 7 and mainly serves a decorative purpose. The lower cover 9 is located below the turntable 7 and contains an LED light source 3 for illumination.

[0004] In the prior art, the fan light driver is usually installed inside the bell, and the output wires of the driver all need to pass through the bell. The number of wires passing through the bell is large, which makes installation inconvenient. Utility Model Content

[0005] This utility model provides a lamp fan control device and a lamp fan to solve the problem of inconvenient installation caused by the large number of wires passing through the hanging rod in the prior art.

[0006] In a first aspect, this utility model provides a lamp fan control device, including: a power supply board and a drive board; wherein, the power supply board is disposed inside the lamp fan's bell, and the drive board is disposed inside the upper or lower cover of the lamp fan; The input terminal of the power board is connected to the AC power supply, and the output terminal of the power board is connected to the input terminal of the drive board through a wire passing through the suspension rod. The first output terminal of the driver board is used to drive the LED light source to emit light, and the second output terminal of the driver board is used to drive the fan motor to rotate.

[0007] Optionally, the driver board includes: an LED driver module, a fan driver module, and a main control module; The input terminal of the LED driver module is connected to the input terminal of the fan driver module. The input terminal of the LED driver module also forms the input terminal of the driver board. The control terminal of the LED driver module is connected to the main control module. The output terminal of the LED driver module is used to drive the LED light source to emit light. The control terminal of the fan drive module is connected to the main control module, and the fan drive module is used to drive the fan motor to rotate.

[0008] Optionally, the LED light source includes: LED light strings with at least two color temperatures; the LED driver module includes: a dimming unit and a color temperature adjustment unit; The input terminal of the dimming unit forms the input terminal of the LED driver module, the output terminal of the dimming unit is connected to the input terminal of the color temperature adjustment unit, and the control terminal of the dimming unit is connected to the main control module to receive dimming signals. The output terminal of the color temperature adjustment unit forms the output terminal of the LED driver module, and the control terminal of the color temperature adjustment unit is connected to the main control module to receive the color temperature adjustment signal.

[0009] Optionally, the fan drive module includes: three motor drive units; The motor drive unit includes: a power MOSFET driver chip, a first resistor, a second resistor, a third resistor, a first capacitor, and a second capacitor; The first control terminal of the power MOSFET driver chip is connected to the first terminal of the first resistor and the first terminal of the first capacitor, respectively. The ground terminal of the power MOSFET driver chip is connected to the second terminal of the first capacitor and the first terminal of the third resistor, respectively. The ground terminal of the power MOSFET driver chip is also connected to the main control module. The second control terminal of the power MOSFET driver chip is connected to the first terminal of the second resistor and the first terminal of the second capacitor, respectively. The power supply terminal of the power MOSFET driver chip is connected to the second terminal of the second capacitor. Each output terminal of the power MOSFET driver chip is connected to the corresponding phase of the motor winding. The second end of the first resistor is connected to the main control module; The second end of the second resistor is connected to the main control module; The power MOSFET driver chips of each motor drive unit are connected to form the input terminal of the fan drive module. The second end of the third resistor of the first motor drive unit is connected to the second end of the third resistor of the second motor drive unit and the ground terminal of the power MOSFET driver chip of the third motor drive unit, respectively; the second end of the third resistor of the third motor drive unit is connected to the first ground terminal.

[0010] Optionally, the fan drive module also includes: an overcurrent detection unit; the overcurrent detection unit includes: a fourth resistor, a fifth resistor, and a third capacitor; The first end of the fourth resistor is connected to the first end of the fifth resistor, the second end of the third resistor of the first motor drive unit, the second end of the third resistor of the second motor drive unit, and the ground terminal of the power MOSFET driver chip of the third motor drive unit. The second end of the fourth resistor is connected to the first end of the third capacitor. The second end of the fourth resistor is also connected to the main control module. The second terminal of the third capacitor and the second terminal of the fifth resistor are both connected to the first ground terminal.

[0011] Optionally, the power supply board includes: a front-end filter module, a rectification module, an isolation conversion module, and a back-end filter module; The input terminal of the front-end filter module forms the input terminal of the power board. The positive output terminal of the front-end filter module is connected to the positive input terminal of the rectifier module, and the negative output terminal of the front-end filter module is connected to the negative input terminal of the rectifier module. The positive output terminal of the rectifier module is connected to the input terminal of the isolation converter module, and the negative output terminal of the rectifier module is connected to the negative input terminal of the isolation converter module and the second ground terminal, respectively. The positive input terminal of the back-end filter module is connected to the positive output terminal of the isolation converter module, the negative input terminal of the back-end filter module is connected to the negative output terminal of the isolation converter module, the positive output terminal of the back-end filter module forms the output terminal of the power board, and the negative output terminal of the back-end filter module is connected to the first ground terminal.

[0012] Optionally, the power board may also include: an AC detection module; the AC detection module includes: a first optocoupler, a first diode, a sixth resistor, a seventh resistor, an eighth resistor, a ninth resistor, and a fourth capacitor; The positive input terminal of the first optocoupler is connected to the first terminal of the sixth resistor and the first terminal of the seventh resistor, respectively. The negative input terminal of the first optocoupler is connected to the second terminal of the seventh resistor and the negative output terminal of the front-end filter module, respectively. The positive output terminal of the first optocoupler is connected to the first terminal of the eighth resistor and the first terminal of the ninth resistor, respectively. The negative output terminal of the first optocoupler is connected to the first terminal of the fourth capacitor and the first ground terminal, respectively. The second end of the sixth resistor is connected to the cathode of the first diode, and the anode of the first diode is connected to the positive output terminal of the front-end filter module. The second end of the eighth resistor is connected to the output terminal of the power board; the second end of the ninth resistor is connected to the second end of the fourth capacitor, and the second end of the ninth resistor is also connected to the main control module.

[0013] Optionally, the driver board may also include: a DC detection module; the DC detection module includes: a tenth resistor, an eleventh resistor, a twelfth resistor, and a fifth capacitor; The first end of the tenth resistor is connected to the input terminal of the driver board, and the second end of the tenth resistor is connected to the first end of the eleventh resistor and the first end of the twelfth resistor, respectively. The second end of the eleventh resistor is connected to the first end of the fifth capacitor, and the second end of the eleventh resistor is also connected to the main control module. The second terminal of the twelfth resistor and the second terminal of the fifth capacitor are both connected to the first ground terminal.

[0014] Optionally, the driver board may also include: a low-voltage power supply module; The input terminal of the low-voltage power supply module is connected to the input terminal of the driver board, and the output terminal of the low-voltage power supply module is used to power the main control module.

[0015] Secondly, this utility model embodiment also provides a lamp fan, comprising: boom; A hanging bell attached to the upper end of a boom; A power board, as provided in the first aspect of the present invention, is installed in the lamp fan control device of the hanging bell; The upper cover is connected to the lower end of the boom; The fan motor, turntable, and fan blades are located below the upper cover; The lower cover is located below the turntable; LED light source set in the lower cover; A drive board, as provided in the first aspect of the present invention, is disposed in the upper or lower cover of the lamp fan control device.

[0016] This utility model provides a lamp fan control device and a lamp fan. The lamp fan control device includes a power supply board and a driver board; wherein, the power supply board is installed inside the lamp fan's hanging rod, and the driver board is installed inside the upper or lower cover of the lamp fan; the input terminal of the power supply board is connected to an AC power source, and the output terminal of the power supply board is connected to the input terminal of the driver board through a wire passing through the hanging rod; the first output terminal of the driver board is used to drive the LED light source to emit light, and the second output terminal of the driver board is used to drive the fan motor to rotate. In this application, the lamp fan driving circuit is divided into two parts: a power supply board and a driver board, which are respectively installed in the hanging rod and the upper or lower cover. The power supply board supplies power to both the fan and the lamp, with only the power supply wire passing through the hanging rod, resulting in fewer wires and convenient installation. At the same time, the two boards are set independently, and are reasonably allocated according to the spatial characteristics of different structural components of the lamp fan, allowing the internal circuit modules to adapt to the mechanical structure of the lamp fan without changing the overall appearance of the lamp fan, making the overall structure of the lamp fan more compact. Furthermore, the independent setting of the two boards allows for quick location of the faulty module when a certain function fails, facilitating repair. Attached Figure Description

[0017] Figure 1 This is a structural diagram of a lamp fan provided in the prior art; Figure 2 This is a schematic diagram of the structure of a lamp fan control device provided in an embodiment of the present utility model; Figure 3 This is a schematic diagram of the circuit structure of a driver board provided in an embodiment of the present utility model; Figure 4 This is a schematic diagram of the circuit structure of an LED driver module provided in an embodiment of the present invention; Figure 5 This is a circuit schematic diagram of an LED driver module provided in an embodiment of the present invention; Figure 6 This is a circuit diagram of a fan drive module provided in an embodiment of the present invention; Figure 7 This is a circuit schematic diagram of an overcurrent detection unit provided in an embodiment of the present invention; Figure 8 This is a schematic diagram of the circuit structure of a power board provided in an embodiment of the present utility model; Figure 9 This is a circuit diagram of a power board provided in an embodiment of the present invention; Figure 10 This is a circuit schematic diagram of an AC detection module provided in an embodiment of the present invention; Figure 11 This is a circuit schematic diagram of a DC detection module provided in an embodiment of the present invention; Figure 12 This is a circuit diagram of a low-voltage power supply module provided in an embodiment of the present invention; Figure 13 This is a circuit schematic diagram of a communication module provided in an embodiment of the present invention; Figure 14 This is a circuit schematic diagram of a main control module provided in an embodiment of the present invention; Figure 15 This is a schematic diagram of the structure of a lamp fan provided in an embodiment of this utility model. Detailed Implementation

[0018] To enable those skilled in the art to better understand this solution, the technical solutions in the embodiments of this solution will be clearly described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this solution, not all of them. Based on the embodiments of this solution, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of this solution.

[0019] The term "comprising" and any other variations thereof in the specification, claims, and accompanying drawings of this invention mean "including but not limited to," and are intended to cover a non-exclusive inclusion, not limited to the examples listed herein. Furthermore, the terms "first" and "second," etc., are used to distinguish different objects, not to describe a specific order.

[0020] The implementation of this utility model will be described in detail below with reference to the specific accompanying drawings: Figure 2 This is a structural schematic diagram of a light fan control device provided for an embodiment of this utility model. (Refer to...) Figure 2 and Figure 15The light fan control device includes a power board 11 and a drive board 12; wherein the power board 11 is installed inside the lamp fan's bell 5, and the drive board 12 is installed inside the upper cover 6 or lower cover 9 of the light fan. The input terminal of the power board 11 is connected to the AC power supply, and the output terminal of the power board 11 is connected to the input terminal of the drive board 12 through a wire passing through the hanging rod 2. The first output terminal of the driver board 12 is used to drive the LED light source 3 to emit light, and the second output terminal of the driver board 12 is used to drive the fan motor 4 to rotate.

[0021] The power board 11 (responsible for AC power conversion) and the driver board 12 (responsible for driving the LED light source 3 and the fan motor 4) have a clear division of labor and form a modular design. The power board 11 supplies power to the driver board 12. Only the power supply line (the power supply line between the output end of the power board 11 and the input end of the driver board 12 and the grounding line, two lines) passes through the hanger 2. The number of wires is small and the installation is convenient.

[0022] refer to Figure 15 In this application, the power board 11 and the driver board 12 are respectively integrated into the bell 5 and the upper cover 6 or the lower cover 9 of the lamp fan. This utilizes the structural space of the lamp fan itself (the bell 5, the upper cover 6, and the lower cover 9 are inherent components of the lamp fan), eliminating the need for additional installation cavities. This makes the overall structure more compact and reduces the size and weight of the lamp fan, making it particularly suitable for indoor environments with high space requirements.

[0023] Meanwhile, the modular design makes maintenance more convenient: if a function (such as a light or fan) malfunctions, the corresponding driver board 12 or power board 11 can be tested individually, without replacing the entire control unit, reducing circuit costs, maintenance costs, and time. Furthermore, the driver board 12 is independently designed, allowing for flexible adjustment of drive parameters according to actual application needs, enabling the control unit to adapt to different specifications of light and fan products without simultaneously replacing the power board 11, thus enhancing adaptability and expandability. Additionally, if there are multiple light and fan units in a home, they can all share the power board 11.

[0024] In one possible implementation, refer to Figure 3 The driver board 12 may include: an LED driver module 121, a fan driver module 122, and a main control module 123; The input terminal of the LED driver module 121 is connected to the input terminal of the fan driver module 122. The input terminal of the LED driver module 121 also forms the input terminal of the driver board 12. The control terminal of the LED driver module 121 is connected to the main control module 123. The output terminal of the LED driver module 121 is used to drive the LED light source 3 to emit light. The control terminal of the fan drive module 122 is connected to the main control module 123. The fan drive module 122 is used to drive the fan motor 4 to rotate.

[0025] This application uses the main control module 123 to coordinate the two drive modules, which respectively control the lights and the fans.

[0026] In one possible implementation, refer to Figure 4 and Figure 5 The LED light source 3 may include: LED light strings with at least two color temperatures; the LED driver module 121 may include: a dimming unit 1211 and a color temperature adjustment unit 1212; The input terminal of the dimming unit 1211 forms the input terminal of the LED driver module 121, the output terminal of the dimming unit 1211 is connected to the input terminal of the color temperature adjustment unit 1212, and the control terminal of the dimming unit 1211 is connected to the main control module 123 to receive dimming signals. The output terminal of the color temperature adjustment unit 1212 forms the output terminal of the LED driver module 121, and the control terminal of the color temperature adjustment unit 1212 is connected to the main control module 123 to receive the color temperature adjustment signal.

[0027] The dimming unit 1211 receives the dimming signal from the main control module 123 and adjusts the overall output power to control the brightness of the light; the color temperature adjustment unit 1212 receives the color temperature adjustment signal from the main control module 123 and adjusts the power ratio of different color temperature light strings (such as increasing the current of warm white light strings and decreasing the current of cool white light strings) to achieve continuous or segmented adjustment of the light color temperature; through independent adjustment of brightness and color temperature, the application needs of different scenarios can be met.

[0028] For example, Figure 5 A circuit diagram of a dimming unit 1211 and a color temperature adjustment unit 1212 is shown; see reference. Figure 5 The LED light source 3 includes two LED strings with different color temperatures (LED+ connects to the anodes of the two LED strings, and Y- and W- connect to the cathodes of the two LED strings respectively). The main control module 123 sends two PWM signals (PWM_Y and PWM_W) to control the duty cycle of the two LED strings, thereby achieving color temperature adjustment. The main control module 123 also sends one PWM signal (PWM-DIM) to adjust the output current of the dimming unit 1211, thereby achieving brightness adjustment. The specific circuit details are not described here.

[0029] In one possible implementation, refer to Figure 6 The fan drive module 122 may include: three motor drive units 1221; The motor drive unit 1221 may include: a power MOSFET drive chip U1, a first resistor R1, a second resistor R2, a third resistor R3, a first capacitor C1, and a second capacitor C2; The first control terminal of the power MOSFET driver chip U1 is connected to the first terminal of the first resistor R1 and the first terminal of the first capacitor C1, respectively. The ground terminal of the power MOSFET driver chip U1 is connected to the second terminal of the first capacitor C1 and the first terminal of the third resistor R3, respectively. The ground terminal of the power MOSFET driver chip U1 is also connected to the main control module 123. The second control terminal of the power MOSFET driver chip U1 is connected to the first terminal of the second resistor R2 and the first terminal of the second capacitor C2, respectively. The power supply terminal of the power MOSFET driver chip U1 is connected to the second terminal of the second capacitor C2. Each output terminal of the power MOSFET driver chip U1 is connected to the corresponding phase motor winding. The second end of the first resistor R1 is connected to the main control module 123; The second end of the second resistor R2 is connected to the main control module 123; The power MOSFET driver chip U1 of each motor drive unit 1221 is connected to form the input terminal (+24V) of the fan drive module 122. The second end of the third resistor R3 of the first motor drive unit 1221 is connected to the second end of the third resistor R3 of the second motor drive unit 1221 and the ground terminal of the power MOSFET driver chip U1 of the third motor drive unit 1221, respectively; the second end of the third resistor R3 of the third motor drive unit 1221 is connected to the first ground terminal.

[0030] This application employs three motor drive units 1221 to form a fan drive module 122. Each unit receives signals from the main control module 123 through a power MOSFET driver chip U1 and peripheral components, and collaboratively drives the three-phase windings of the fan motor 4. The power MOSFET driver chip U1 has a large output current, which can meet the power requirements of the motor at different speeds. Furthermore, the modular design facilitates fault diagnosis and replacement, improving overall reliability.

[0031] In one possible implementation, refer to Figure 7 The fan drive module 122 may also include: an overcurrent detection unit; the overcurrent detection unit includes: a fourth resistor R4, a fifth resistor R5 and a third capacitor C3; The first end (G) of the fourth resistor R4 is connected to the first end of the fifth resistor R5, the second end of the third resistor R3 of the first motor drive unit 1221, the second end of the third resistor R3 of the second motor drive unit 1221, and the ground terminal of the power MOSFET driver chip U1 of the third motor drive unit 1221. The second end of the fourth resistor R4 is connected to the first end of the third capacitor C3. The second end (OCP) of the fourth resistor R4 is also connected to the main control module 123. The second terminal of the third capacitor C3 and the second terminal of the fifth resistor R5 are both connected to the first ground terminal.

[0032] The fourth resistor R4 and the fifth resistor R5 are used for voltage division / current limiting, and the third capacitor C3 is used for filtering. The voltage at the second terminal (OCP) of the fourth resistor R4 reflects the current of the fan motor 4. When an overcurrent occurs, the main control module 123 detects that the voltage at the second terminal of the fourth resistor R4 exceeds the limit, enabling timely detection of the overcurrent situation. Once an abnormal current is detected, the operating state of the power MOSFET driver chip U1 can be quickly controlled to cut off or adjust the power supply to the motor, thereby protecting the chip, the motor, and the entire fan drive module 122, avoiding damage to the devices due to overcurrent, and improving the reliability and stability of the circuit.

[0033] In one possible implementation, refer to Figure 8 The power board 11 may include: a front-end filter module 111, a rectifier module 112, an isolation converter module 113, and a back-end filter module 114; The input terminal of the front-end filter module 111 forms the input terminal of the power board 11. The positive output terminal of the front-end filter module 111 is connected to the positive input terminal of the rectifier module 112, and the negative output terminal of the front-end filter module 111 is connected to the negative input terminal of the rectifier module 112. The positive output terminal of the rectifier module 112 is connected to the input terminal of the isolation converter module 113, and the negative output terminal of the rectifier module 112 is connected to the negative input terminal of the isolation converter module 113 and the second ground terminal, respectively. The positive input terminal of the back-end filter module 114 is connected to the positive output terminal of the isolation conversion module 113, the negative input terminal of the back-end filter module 114 is connected to the negative output terminal of the isolation conversion module 113, the positive output terminal of the back-end filter module 114 forms the output terminal of the power board 11, and the negative output terminal of the back-end filter module 114 is connected to the first ground terminal.

[0034] The front-end filter module 111 filters out high-frequency interference (such as grid noise and electromagnetic radiation) in the AC power supply, while suppressing the reverse conduction of interference generated inside the power board 11 to the grid. The rectifier module 112 converts AC power into DC power. The isolation converter module 113 converts the rectified high-voltage DC power into the required low-voltage DC power, and also achieves electrical isolation between the input and output circuits, thus isolating high voltage and low voltage to prevent high voltage or faults on the input side from affecting the output side and improving safety. The back-end filter module 114 further filters out the high-frequency ripple and noise remaining after the isolation converter, making the output voltage smoother and more stable. All modules work together to provide stable and clean DC power to the driver board 12.

[0035] Circuit schematics for each module (reference) Figure 9 The specifics will not be elaborated here.

[0036] In one possible implementation, refer to Figure 10 The power board 11 may also include: an AC detection module; the AC detection module may include: a first optocoupler U2, a first diode D1, a sixth resistor R6, a seventh resistor R7, an eighth resistor R8, a ninth resistor R9 and a fourth capacitor C4. The positive input terminal of the first optocoupler U2 is connected to the first terminal of the sixth resistor R6 and the first terminal of the seventh resistor R7 respectively. The negative input terminal of the first optocoupler U2 is connected to the second terminal of the seventh resistor R7 and the negative output terminal (T2) of the front-end filter module 111 respectively. The positive output terminal of the first optocoupler U2 is connected to the first terminal of the eighth resistor R8 and the first terminal of the ninth resistor R9 respectively. The negative output terminal of the first optocoupler U2 is connected to the first terminal of the fourth capacitor C4 and the first ground terminal respectively. The second end of the sixth resistor R6 is connected to the cathode of the first diode D1, and the anode of the first diode D1 is connected to the positive output terminal (T1) of the front-end filter module 111. The second end of the eighth resistor R8 is connected to the output terminal of the power board 11; the second end of the ninth resistor R9 is connected to the second end of the fourth capacitor C4, and the second end (OZ1) of the ninth resistor R9 is also connected to the main control module 123.

[0037] This application also includes an AC detection module for detecting whether the AC power input is normal; see the specific circuit reference. Figure 10 This will not be elaborated further here. Since the main control module 123 is located on the drive board 12, the second end of the ninth resistor R9 needs to be connected to the main control module 123 through a wire passing through the hanger 2. This adds one more wire to the hanger 2, but there are only three wires. The number of wires is small and does not affect the installation.

[0038] In one possible implementation, refer to Figure 11 The driver board 12 may also include: a DC detection module; the DC detection module may include: a tenth resistor R10, an eleventh resistor R11, a twelfth resistor R12 and a fifth capacitor C5; The first end of the tenth resistor R10 is connected to the input terminal of the driver board 12, and the second end of the tenth resistor R10 is connected to the first end of the eleventh resistor R11 and the first end of the twelfth resistor R12 respectively. The second end of the eleventh resistor R11 is connected to the first end of the fifth capacitor C5, and the second end of the eleventh resistor R11 (DC_CHECK) is also connected to the main control module 123. The second terminal of the twelfth resistor R12 and the second terminal of the fifth capacitor C5 are both connected to the first ground terminal.

[0039] The components form a voltage divider and filter network, which is used to collect the voltage at the input terminal of the driver board 12 and send it to the main control module 123 to determine whether the input is normal and to protect the circuit.

[0040] In one possible implementation, refer to Figure 12 and Figure 3 The driver board 12 may also include: a low-voltage power supply module 124; The input terminal of the low-voltage power supply module 124 is connected to the input terminal of the driver board 12, and the output terminal of the low-voltage power supply module 124 is used to supply power to the main control module 123.

[0041] The driver board 12 also includes a low-voltage power supply module 124, which steps down the power supplied by the power board 11 to power the main control module 123. (Circuit schematic reference) Figure 12 The specifics will not be elaborated here.

[0042] In one possible implementation, the driver board 12 may further include: a communication module; The communication module is connected to the main control module 123 and is used to receive external control signals to control the lights and fans.

[0043] The communication module can be an RF communication module; see circuit schematic for reference. Figure 13 Details will not be elaborated here. (Reference) Figure 13 The low-voltage power supply module 124 is also used to power the communication module.

[0044] For example, the circuit schematic of the main control module 123 is shown in the reference diagram. Figure 14 The specifics will not be elaborated here.

[0045] Corresponding to the above embodiments, refer to Figure 15 This utility model embodiment also provides a lamp fan, including: Plug 2; The bell 5 is connected to the upper end of the boom 2; The power board 11 is installed in the lamp fan control device as described in the above embodiment in the bell 5; The upper cover 6 is connected to the lower end of the boom 2; The fan motor 4, turntable 7 and fan blades 8 are located below the upper cover 6; The lower cover 9 is located below the turntable 7; LED light source 3 is installed in the lower cover 9; The drive board 12 is installed in the lamp fan control device as provided in the above embodiment, which is located in the upper cover 6 or the lower cover 9.

[0046] The number of wires passing through the hanging rod 2 is small, the installation is simple, the space is used reasonably, and the overall structure is more compact.

[0047] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A light fan control device, characterized in that, include: A power supply board and a driver board; wherein the power supply board is disposed inside the lamp fan's hanging bell, and the driver board is disposed inside the upper or lower cover of the lamp fan; The input terminal of the power board is connected to an AC power source, and the output terminal of the power board is connected to the input terminal of the drive board via a wire passing through the suspension rod. The first output terminal of the driver board is used to drive the LED light source to emit light, and the second output terminal of the driver board is used to drive the fan motor to rotate.

2. The light and fan control device as described in claim 1, characterized in that, The driver board includes: an LED driver module, a fan driver module, and a main control module; The input terminal of the LED driver module is connected to the input terminal of the fan driver module, and the input terminal of the LED driver module also forms the input terminal of the driver board. The control terminal of the LED driver module is connected to the main control module, and the output terminal of the LED driver module is used to drive the LED light source to emit light. The control terminal of the fan drive module is connected to the main control module, and the fan drive module is used to drive the fan motor to rotate.

3. The light fan control device as described in claim 2, characterized in that, The LED light source includes: LED light strings with at least two color temperatures; the LED driving module includes: a dimming unit and a color temperature adjustment unit; The input terminal of the dimming unit forms the input terminal of the LED driver module, the output terminal of the dimming unit is connected to the input terminal of the color temperature adjustment unit, and the control terminal of the dimming unit is connected to the main control module for receiving dimming signals. The output terminal of the color temperature adjustment unit forms the output terminal of the LED driver module, and the control terminal of the color temperature adjustment unit is connected to the main control module for receiving color temperature adjustment signals.

4. The light and fan control device as described in claim 2, characterized in that, The fan drive module includes: three motor drive units; The motor drive unit includes: a power MOSFET driver chip, a first resistor, a second resistor, a third resistor, a first capacitor, and a second capacitor; The first control terminal of the power MOSFET driver chip is connected to the first terminal of the first resistor and the first terminal of the first capacitor, respectively. The ground terminal of the power MOSFET driver chip is connected to the second terminal of the first capacitor and the first terminal of the third resistor, respectively. The ground terminal of the power MOSFET driver chip is also connected to the main control module. The second control terminal of the power MOSFET driver chip is connected to the first terminal of the second resistor and the first terminal of the second capacitor, respectively. The power supply terminal of the power MOSFET driver chip is connected to the second terminal of the second capacitor. Each output terminal of the power MOSFET driver chip is connected to the corresponding phase of the motor winding. The second end of the first resistor is connected to the main control module; The second end of the second resistor is connected to the main control module; The power MOSFET driver chips of each motor drive unit are connected to form the input terminal of the fan drive module. The second end of the third resistor of the first motor drive unit is connected to the second end of the third resistor of the second motor drive unit and the ground terminal of the power MOSFET driver chip of the third motor drive unit; the second end of the third resistor of the third motor drive unit is connected to the first ground terminal.

5. The light and fan control device as described in claim 4, characterized in that, The fan drive module further includes an overcurrent detection unit; the overcurrent detection unit includes a fourth resistor, a fifth resistor, and a third capacitor. The first end of the fourth resistor is connected to the first end of the fifth resistor, the second end of the third resistor of the first motor drive unit, the second end of the third resistor of the second motor drive unit, and the ground terminal of the power MOSFET driver chip of the third motor drive unit. The second end of the fourth resistor is connected to the first end of the third capacitor. The second end of the fourth resistor is also connected to the main control module. The second terminal of the third capacitor and the second terminal of the fifth resistor are both connected to the first ground terminal.

6. The light fan control device according to any one of claims 2 to 5, characterized in that, The power board includes: a front-end filtering module, a rectification module, an isolation conversion module, and a back-end filtering module; The input terminal of the front-end filtering module forms the input terminal of the power board, the positive output terminal of the front-end filtering module is connected to the positive input terminal of the rectifier module, and the negative output terminal of the front-end filtering module is connected to the negative input terminal of the rectifier module. The positive output terminal of the rectifier module is connected to the input terminal of the isolation converter module, and the negative output terminal of the rectifier module is connected to the negative input terminal of the isolation converter module and the second ground terminal, respectively. The positive input terminal of the back-end filtering module is connected to the positive output terminal of the isolation conversion module, the negative input terminal of the back-end filtering module is connected to the negative output terminal of the isolation conversion module, the positive output terminal of the back-end filtering module forms the output terminal of the power board, and the negative output terminal of the back-end filtering module is connected to the first ground terminal.

7. The light fan control device as described in claim 6, characterized in that, The power board further includes an AC detection module; the AC detection module includes a first optocoupler, a first diode, a sixth resistor, a seventh resistor, an eighth resistor, a ninth resistor, and a fourth capacitor; The positive input terminal of the first optocoupler is connected to the first terminal of the sixth resistor and the first terminal of the seventh resistor, respectively. The negative input terminal of the first optocoupler is connected to the second terminal of the seventh resistor and the negative output terminal of the front-end filter module, respectively. The positive output terminal of the first optocoupler is connected to the first terminal of the eighth resistor and the first terminal of the ninth resistor, respectively. The negative output terminal of the first optocoupler is connected to the first terminal of the fourth capacitor and the first ground terminal, respectively. The second end of the sixth resistor is connected to the cathode of the first diode, and the anode of the first diode is connected to the positive output terminal of the front-end filter module. The second end of the eighth resistor is connected to the output end of the power board; the second end of the ninth resistor is connected to the second end of the fourth capacitor, and the second end of the ninth resistor is also connected to the main control module.

8. The light and fan control device according to any one of claims 2 to 5, characterized in that, The driver board further includes a DC detection module; the DC detection module includes a tenth resistor, an eleventh resistor, a twelfth resistor, and a fifth capacitor; The first end of the tenth resistor is connected to the input end of the driver board, and the second end of the tenth resistor is connected to the first end of the eleventh resistor and the first end of the twelfth resistor, respectively. The second end of the eleventh resistor is connected to the first end of the fifth capacitor, and the second end of the eleventh resistor is also connected to the main control module; The second terminal of the twelfth resistor and the second terminal of the fifth capacitor are both connected to the first ground terminal.

9. The light fan control device according to any one of claims 2 to 5, characterized in that, The driver board also includes: a low-voltage power supply module; The input terminal of the low-voltage power supply module is connected to the input terminal of the driver board, and the output terminal of the low-voltage power supply module is used to supply power to the main control module.

10. A lamp fan, characterized in that, include: boom; A bell connected to the upper end of the boom; The power board of the lamp fan control device as described in any one of claims 1 to 9 is disposed in the bell; The upper cover is connected to the lower end of the boom; The fan motor, turntable, and fan blades are located below the upper cover; The lower cover is located below the turntable; LED light source disposed in the lower cover; The drive board of the lamp fan control device as described in any one of claims 1 to 9 is disposed in the upper cover or the lower cover.

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