DC fan assembly

Abstract

Embodiments of the present disclosure provide a DC fan assembly which includes a DC fan; a first control switch adapted to be disposed at a mounting position; a signal conversion circuit electrically connected to the first control switch, wherein the signal conversion circuit is capable of obtaining a first status signal of the first control switch and converting the first status signal into a first pulse signal; and an action execution circuit electrically connected to the signal conversion circuit and the DC fan, wherein the action execution circuit is capable of identifying the first pulse signal to control the DC fan. 20 24 27 83 16 11 D ec 2 02 4 A B S T R A C T 2 0 2 4 2 7 8 3 1 6 1 1 D e c 2 0 2 4 A B S T R A C T 2 0 2 4 2 7 8 3 1 6 1 1 D e c 2 0 2 4 1 / 3 DRAWINGS 100 200 1 7 2 3 4 6 31 32 33 34 41 42 435 DC FAN ILLUMINATION LAMP SECOND RECTIFIER CIRCUIT TRANS- FORMER CIRCUIT CONTROL CIRCUIT FIRST RECTIFIER CIRCUIT INPUT CIRCUIT DETERMI- NATION CIRCUIT COMMU- NICATION CIRCUIT FIRST CONTROL SWITCH SECOND CONTROL SWITCH SIGNAL CONVERSION CIRCUIT ACTION EXECUTION CIRCUIT FIG. 1 1 / 3 DRAWINGS 200 100 4 3 41 34 5 43 1 7 SECOND SIGNAL FIRST RECTIFIER CONVERSION RECTIFIER TRANS- 31 FORMER CIRCUIT ILLUMINATION DC FAN CIRCUIT CIRCUIT LAMPCIRCUIT ACTION EXECUTION CIRCUIT INPUT DETERMI- COMMU- CIRCUIT NATION NICATION CIRCUIT CIRCUIT CONTROL CIRCUIT 32 33 42 FIRST SECOND CONTROL CONTROL SWITCH SWITCH 2 6 FIG. 1 20 24 27 83 16 11 D ec 2 02 4 2 0 2 4 4 2 0 2 4 2 7 8 3 1 6 1 1 D e c 3 4 5 4 3 S I G N A L F I R S T T R A N S - I L L U M I N A T I O N D C F A N A C T I O N E X E C U T I O N I N P U T C O M M U - C O N T R O L 3 2 3 3 4 2 F I R S T S E C O N D 2 F I G . 1 2 0 2 4 4 2 0 2 4 2 7 8 3 1 6 1 1 D e c 3 4 5 4 3 S I G N A L F I R S T T R A N S - I L L U M I N A T I O N D C F A N A C T I O N E X E C U T I O N I N P U T C O M M U - C O N T R O L 3 2 3 3 4 2 F I R S T S E C O N D 2 F I G . 1

Description

2024278316   11 Dec 2024 CROSS-REFERENCE

[0001] The present application claims priority to Chinese Patent Application No. 202420901977.X, filed on April 28, 2024, and entitled “DC FAN ASSEMBLY”, the entirety of which is incorporated herein by reference. FIELD

[0002] Embodiments of the present disclosure generally relate to the technical field of electrical equipment, and more particularly, to a DC fan assembly. BACKGROUND

[0003] For a direct current (DC) fan product, a remote control scheme is welcomed by the user, for example, a remote controller may control the DC fan product to work or stop working. However, the remote control may encounter problems such as out-of-power and failure of the remote controller, control malfunction or device loss.

[0004] Therefore, how to provide a stable and convenient control solution for the DC fan is a technical problem to be solved urgently. SUMMARY

[0005] An objective of the present disclosure is to provide a DC fan assembly to at least partially solve the above problems.

[0006] In an aspect of the present disclosure, there is provided a DC fan assembly including a DC fan; a first control switch adapted to be disposed at a mounting position; a signal conversion circuit electrically connected to the first control switch, wherein the signal conversion circuit is capable of obtaining a first status signal of the first control switch and converting the first status signal into a first pulse signal; and an action execution circuit electrically connected to the signal conversion circuit and the DC fan, wherein the action execution circuit is capable of identifying the first pulse signal to control the DC fan.

[0007] According to embodiments of the present disclosure, the signal conversion circuit is capable of obtaining the first status signal of the first control switch and converting the first status signal into the first pulse signal, and the action execution circuit is capable of identifying the first pulse signal to control the DC fan. Therefore, in a case that the first control switch is disposed at the mounting position, through controlling the first control switch, the DC fan can be stably and conveniently controlled.

[0008] In some embodiments, the signal conversion circuit comprises an input circuit electrically connected to the first control switch and being capable of obtaining the first status signal.

[0009] In some embodiments, the signal conversion circuit further comprises a judgment circuit 2024278316   11 Dec 2024 electrically connected to the input circuit and being capable of judging whether the first status signal is successfully obtained.

[0010] In some embodiments, the signal conversion circuit further comprises a communication circuit, an input end of the communication circuit is electrically connected to the determination circuit, an output end of the communication circuit is electrically connected to the action execution circuit, wherein in response to that the determination circuit determines that the first status signal is successfully obtained, the communication circuit is capable of converting the first status signal into the first pulse signal and transmitting the first pulse signal to the action execution circuit.

[0011] In some embodiments, the signal conversion circuit further comprises a first rectifier circuit, and the first rectifier circuit and the communication circuit are connected to the action execution circuit through wires.

[0012] In some embodiments, the wires comprise a first wire and a second wire, the first rectifier circuit comprises a first diode, a second diode, a third diode, and a fourth diode, wherein the first wire is electrically connected to an anode of the first diode and a cathode of the second diode, the second wire is electrically connected to an anode of the third diode and a cathode of the fourth diode, cathodes of the first diode and the third diode are connected to a first node, and anodes of the second diode and the fourth diode are connected to a second node.

[0013] In some embodiments, the action execution circuit comprises a second rectifier circuit electrically connected to a power supply and being capable of converting an AC voltage into a DC output voltage.

[0014] In some embodiments, the action execution circuit further comprises a transformer circuit, an input end of the transformer circuit is electrically connected to the second rectifier circuit, and an output end of the transformer circuit is electrically connected to the first rectifier circuit through the wires.

[0015] In some embodiments, the action execution circuit further comprises a control circuit electrically connected to the output end of the transformer circuit, and the control circuit is electrically connected to the communication circuit through the wires.

[0016] In some embodiments, the DC fan assembly further comprises a second control switch and an illumination lamp, the illumination lamp is electrically connected to the control circuit, and the second control switch is electrically connected to the input circuit.

[0017] It should be understood that the content described in this section is not intended to limit the key features or important features of the embodiments of the present disclosure, nor is it intended to limit the scope of the present disclosure. Other features of the present disclosure will become readily understood from the following description. BRIEF DESCRIPTION OF DRAWINGS

[0018] The above and other features, advantages, and aspects of various embodiments of the present disclosure will become more apparent from the following detailed description taken in 2024278316   11 Dec 2024 conjunction with the accompanying drawings. In the drawings, the same or similar reference numbers refer to the same or similar elements, wherein:

[0019] FIG. 1 shows a structural block diagram of a DC fan assembly according to some embodiments of the present disclosure;

[0020] FIG. 2 shows a schematic structural diagram of an input circuit, a first control switch, and a second control switch according to some embodiments of the present disclosure;

[0021] FIG. 3 shows a schematic structural diagram of a first rectifier circuit according to some embodiments of the present disclosure.

[0022] List of reference symbols: 100 represents a DC fan assembly, 200 represents a power supply; 1 represents a DC fan; 2 represents a first control switch; 3 represents a signal conversion circuit, 31 represents an input circuit, 311 represents a first pin, 312 represents a second pin, 313 represents a third pin, 314 represents a fourth pin, 315 represents a fifth pin, 316 represents a sixth pin, 32 represents a determination circuit, 33 represents a communication circuit, 34 represents a first rectifier circuit, 341 represents a first diode, 342 represents a second diode, 343 represents a third diode, 344 represents a fourth diode, 345 represents a first node, and 346 represents a second node; 4 represents an action execution circuit, 41 represents a second rectifier circuit, 42 represents a control circuit, and 43 represents a transformer circuit; 5 represent wires, 51 represents a first wire, and 52 represents a second wire; 6 represents a second control switch; 7 represents an illumination lamp. DETAILED DESCRIPTION

[0023] Embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While the embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be implemented in various forms and should not be limited by the embodiments set forth herein. Rather, these embodiments are provided to make this disclosure more thorough and complete, and to fully convey the scope of the present disclosure to those skilled in the art.

[0024] As used herein, the term “including” and variations thereof represent openness, i.e., “including but not limited to”. Unless specifically stated, the term “or” means “and / or”. The term “based on” means “based at least in part on”. The terms “an example embodiment” and “an embodiment” mean “at least one example embodiment”. The term “another embodiment” means “at least one further embodiment”. The terms “first,” “second,” and the like may refer to different or identical objects.

[0025] As described above, for a DC fan product, a remote control scheme is welcomed by the user, for example, a remote controller may control the DC fan product to work or stop working. However, 2024278316   11 Dec 2024 the remote control may encounter problems such as out-of-power and failure of the remote controller, control malfunction or device loss. Embodiments of the present disclosure provide a DC fan assembly 100 to at least partially solve the above problems. Hereinafter, the principles of the present disclosure will be described with reference to FIGS. 1 to 3.

[0026] FIG. 1 shows a structural block diagram of a DC fan assembly 100 according to some embodiments of the present disclosure. As shown in FIG. 1, the DC fan assembly 100 described herein generally includes a DC fan 1, a first control switch 2, a signal conversion circuit 3, an action execution circuit 4, wires 5, a second control switch 6, and an illumination lamp 7.

[0027] Referring to FIG. 1, in some embodiments, the signal conversion circuit 3 is electrically connected to the first control switch 2 to obtain a first status signal of the first control switch 2. The signal conversion circuit 3 can convert the obtained first status signal into a first pulse signal, and the signal conversion circuit 3 can send the first pulse signal outwards. The action execution circuit 4 can be electrically connected to the signal conversion circuit 3 and the DC fan 1, and the action execution circuit 4 can identify the first pulse signal to control the DC fan 1.

[0028] In some embodiments, the first control switch 2 may be disposed at the mounting position, which may be interpreted as any mountable position. For example, the first control switch 2 may be disposed on a wall, thereby implementing a wall control scheme of the DC fan 1. Certainly, the signal conversion circuit 3 may also be disposed on a wall, which is not limited herein.

[0029] According to embodiments of the present disclosure, the signal conversion circuit 3 can obtain the first status signal of the first control switch 2 and convert the first status signal into a first pulse signal, and the action execution circuit 4 can identify the first pulse signal to control the DC fan 1. Therefore, in a case that the first control switch 2 is disposed at the mounting position, through controlling the first control switch 2, the DC fan 1 can be stably and conveniently controlled, so as to solve the problems such as the out-of-power and the failure of the remote controller, the control malfunction or the device loss. In addition, the signal conversion circuit 3 and the action execution circuit 4 communicate through a customized protocol, therefore an error-proofing protocol can be established between the signal conversion circuit 3 and the action execution circuit 4.

[0030] With continued reference to FIG. 1, in some embodiments, the signal conversion circuit 3 may be electrically connected to the second control switch 6 to obtain a second status signal of the second control switch 6. The signal conversion circuit 3 can convert the obtained second status signal into a second pulse signal. The action execution circuit 4 may be electrically connected to the signal conversion circuit 3 and the illumination lamp 7, and the action execution circuit 4 may identify the second pulse signal to control the illumination lamp 7.

[0031] In some embodiments, the second control switch 6 may also be disposed at the mounting position. For example, the second control switch 6 may be disposed on a wall, which is not limited herein.

[0032] With continued reference to FIG. 1, in some embodiments, the signal conversion circuit 3 may include an input circuit 31, a determination circuit 32, and a communication circuit 33. The 2024278316   11 Dec 2024 input circuit 31 may be electrically connected to the first control switch 2 and the second control switch 6. The determination circuit 32 may be electrically connected to the input circuit 31. An input end of the communication circuit 33 is electrically connected to the determination circuit 32, and an output end of the communication circuit 33 is electrically connected to the action execution circuit 4.

[0033] Apparently, the input circuit 31 can obtain the first status signal and the second status signal. The determination circuit 32 can determine whether the first status signal is successfully obtained and determine whether the second status signal is successfully obtained. In response to that the determination circuit 32 determines that the first status signal is successfully obtained, the communication circuit 33 can convert the first status signal into the first pulse signal, and the communication circuit 33 can transmit the first pulse signal to the action execution circuit 4. In response to that the determination circuit 32 determines that the second status signal is successfully obtained, the communication circuit 33 can convert the second status signal into the second pulse signal, and the communication circuit 33 can transmit the second pulse signal to the action execution circuit 4. Thus, a verification mechanism can be implemented while the control process is implemented.

[0034] FIG. 2 shows a schematic structural diagram of an input circuit 31, a first control switch 2, and a second control switch 6 according to some embodiments of the present disclosure. As shown in FIG. 2, in some embodiments, the input circuit 31 may include a first pin 311, a second pin 312, a third pin 313, a fourth pin 314, a fifth pin 315, and a sixth pin 316. Correspondingly, the first control switch 2 may include a first binding post, a second binding post, a third binding post, and a fourth binding post. The first pin 311 may be electrically connected to the fourth binding post, the second pin 312 may be electrically connected to the third binding post, the third pin 313 may be electrically connected to the second binding post, and the fourth pin 314 may be electrically connected to the first binding post.

[0035] With continued reference to FIG. 2, it can be seen that, in response to that the first control switch 2 is rotated to cause the first binding post to be connected to the second binding post, the input circuit 31 can obtain a corresponding first status signal, therefore the DC fan 1 can rotate in a first gear. Similarly, in response to that the first control switch 2 is rotated to cause the first binding post to be connected to the third binding post, the input circuit 31 can obtain a corresponding first status signal, therefore the DC fan 1 can rotate in a second gear. Similarly, in response to that the first control switch 2 is rotated to cause the first binding post to be connected to the fourth binding post, the input circuit 31 can obtain a corresponding first status signal, therefore the DC fan 1 can rotate in a third gear. However, in response to that the first control switch 2 is rotated to cause the first binding post to be not connected to the second binding post, the third binding post and the fourth binding post, the input circuit 31 can obtain a corresponding first status signal, therefore the DC fan 1 does not rotate.

[0036] It should be noted that the numbers, values, numbers, etc., which may be mentioned above 2024278316   11 Dec 2024 and elsewhere in the present disclosure, are exemplary and are not intended to limit the scope of the present disclosure in any way. Any other suitable number, numerical value, or quantity are possible. For example, according to a specific application scenario and requirement, the first control switch 2 may include a first binding post, a second binding post, and a third binding post. Apparently, in this case, the DC fan 1 can rotate in two gears, which is not limited herein.

[0037] With continued reference to FIG. 2, similarly, in some embodiments, the second control switch 6 may include a fifth binding post and a sixth binding post. The fifth pin 315 may be connected to the fifth binding post, and the sixth pin 316 may be connected to a sixth binding post. In response to that the second control switch 6 is pressed to cause the fifth binding post to be connected to the sixth binding post, the input circuit 31 can obtain a corresponding second status signal, therefore the illumination lamp 7 is turned on. In response to that the second control switch 6 is released to cause the fifth binding post to be disconnected from the sixth binding post, the input circuit 31 can obtain a corresponding second status signal, therefore the illumination lamp 7 is turned off.

[0038] It should be noted that, in response to that the first control switch 2 is in different gears, the communication circuit 33 may transmit different types of first pulse signals, certainly not limited to pulse signals, and other signal types are also possible, which is not limited herein. For example, in response to that the first control switch 2 is in a zero gear, the communication circuit 33 may transmit a first pulse signal of a first type, therefore the DC fan 1 does not rotate. In response to that the first control switch 2 is in the first gear, the communication circuit 33 may transmit a first pulse signal of a second type, therefore the DC fan 1 can rotate in the first gear. In response to that the first control switch 2 is in the second gear, the communication circuit 33 may transmit a first pulse signal of a third type, therefore the DC fan 1 can rotate in the second gear. In response to that the first control switch 2 is in the third gear, the communication circuit 33 may transmit a first pulse signal of a fourth type, therefore the DC fan 1 can rotate in the third gear.

[0039] Similarly, in response to that the second control switch 6 is in different positions, the communication circuit 22 may transmit the second pulse signal of different types, certainly not limited to the pulse signal, and other signal types are possible, which is not limited herein. For example, in response to that the second control switch 6 is pressed, the communication circuit 33 may transmit the second pulse signal of a first type, therefore the illumination lamp 7 is turned on. In response to that the second control switch 6 is released, the communication circuit 33 may transmit the second pulse signal of a second type, therefore the illumination lamp 7 is turned off.

[0040] Referring back to FIG. 1, in some embodiments, the action execution circuit 4 may include a control circuit 42. The control circuit 42 may be electrically connected to the output end of the communication circuit 33, and the control circuit 42 may be electrically connected to the DC fan 1 and the illumination lamp 7. Thus, the control circuit 42 may control the DC fan 1 according to the received first pulse signal, and the control circuit 42 may further control the illumination lamp 7 according to the received second pulse signal.

[0041] With continued reference to FIG. 1, in some embodiments, the action execution circuit 4 2024278316   11 Dec 2024 may further include a second rectifier circuit 41 and a transformer circuit 43. The second rectifier circuit 41 can be electrically connected to a power supply 200, and the second rectifier circuit 41 can convert an AC voltage into a DC output voltage, for example, the second rectifier circuit 41 can output a DC voltage of 24V. The second rectifier circuit 41 may be electrically connected to the DC fan 1 to provide the DC voltage of 24V to the DC fan 1. An input end of the transformer circuit 43 may be electrically connected to the second rectifier circuit 41, an output end of the transformer circuit 43 may be electrically connected to the control circuit 42, and the output end of the transformer circuit 43 may further be electrically connected to the signal conversion circuit 3 through wires 5. More specifically, the output end of the transformer circuit 43 may be electrically connected to the first rectifier circuit 34 through the wires 5. Thus, the transformer circuit 43 can input 24V DC voltage and output 4.5V to 5.5V DC voltage to supply power to the control circuit 42 and the first rectifier circuit 34. The illumination lamp 7 is electrically connected to the power supply 200 and powered by the power supply 200.

[0042] With continued reference to FIG. 1, in some embodiments, the first rectifier circuit 34 and the communication circuit 33 are both connected to the action execution circuit 4 through the wires 5. The first rectifier circuit 34 may be connected to the output end of the transformer circuit 43 through the wires 5, so as to supply power to the first rectifier circuit 34 through the transformer circuit 43. The communication circuit 33 may be connected to the control circuit 42 through the wires 5 to provide a unidirectional transmission signal to the control circuit 42. It can be seen that the first rectifier circuit 34 and the communication circuit 33 share the wires 5.

[0043] It should be noted that, since the action execution circuit 4 supplies DC power to the signal conversion circuit 3, the wires 5 may include a first wire 51 and a second wire 52. The first rectifier circuit 34 may be connected to the output end of the transformer circuit 43 through the first wire 51 and the second wire 52. The communication circuit 33 may be connected to the control circuit 42 through one of the first wire 51 and the second wire 52, that is, the wires 5 may be used as both a power wire and a signal wire, and the communication circuit 33 transmits a signal unidirectionally to the control circuit 42. Therefore, the action execution circuit 4 and the signal conversion circuit 3 can achieve effects of power-on and unidirectional communication through two wires. The signal conversion circuit 3 is further connected to a ground wire.

[0044] With continued reference to FIG. 1, in some embodiments, the first rectifier circuit 34 may be electrically connected to the input circuit 31, the determination circuit 32, and the communication circuit 33 to supply power to the input circuit 31, the determination circuit 32, and the communication circuit 33. Apparently, the input circuit 31, the determination circuit 32 and the communication circuit 33 may be connected in parallel to the first rectifier circuit 34.

[0045] FIG. 3 shows a schematic structural diagram of a first rectifier circuit 34 according to some embodiments of the present disclosure. As shown in FIG. 3, in some embodiments, the first rectifier circuit 34 may include a first diode 341, a second diode 342, a third diode 343, and a fourth diode 344. The first wire 51 may be electrically connected to an anode of the first diode 341 and a cathode 2024278316   11 Dec 2024 of the second diode 342. The second wire 52 may be electrically connected to an anode of the third diode 343 and a cathode of the fourth diode 344. A cathode of the first diode 341 and a cathode of the third diode 343 are connected to a first node 345, and an anode of the second diode 342 and an anode of the fourth diode 344 are connected to a second node 346.

[0046] With continued reference to FIGS. 1 and 3, apparently, in a case that the first wire 51 is connected to a positive electrode of the transformer circuit 43, the second wire 52 is connected to a negative electrode of the transformer circuit 43, and at the same time, the first wire 51 is connected to a positive electrode of the first rectifier circuit 34, and the second wire 52 is connected to a negative electrode of the first rectifier circuit 34, then the current flows from the first wire 51. The first diode 341 conducts in a forward direction, the second diode 342 cuts off in a reverse direction, and the current flows into the first node 345 through the first diode 341. Then, the current flows into the second node 346 through the input circuit 31, the determination circuit 32 and the communication circuit 33. In a case that the current flows into the second node 346, the fourth diode 344 conducts in a forward direction, the current flows through the fourth diode 344 and flows back to the second wire 52, and finally the current flows back to the negative electrode of the transformer circuit 43, thereby forming a current loop, and the input circuit 31, the determination circuit 32 and the communication circuit 33 are powered.

[0047] In contrast, in a case that the first wire 51 is connected to the positive electrode of the transformer circuit 43, the second wire 52 is connected to the negative electrode of the transformer circuit 43, and at the same time, the first wire 51 is connected to the negative electrode of the first rectifier circuit 34, and the second wire 52 is connected to the positive electrode of the first rectifier circuit 34, then the current flows from the first wire 51. The third diode 343 conducts in a forward direction, the fourth diode 344 cuts off in a reverse direction, and the current flows into the first node 345 through the third diode 343. Then, the current flows into the second node 346 through the input circuit 31, the determination circuit 32 and the communication circuit 33. In a case that the current flows into the second node 346, the second diode 342 conducts in a forward direction, the current flows through the second diode 342 and flows back to the second wire 52, and finally flows back to the negative electrode of the transformer circuit 43, thereby forming a current loop, and the input circuit 31, the determination circuit 32 and the communication circuit 33 are powered.

[0048] It can be seen that, in a case that the first wire 51 is connected to the positive electrode of the transformer circuit 43, no matter whether the first wire 51 is connected to the positive electrode of the first rectifier circuit 34 or the first wire 51 is connected to the negative electrode of the first rectifier circuit 34, the current flow direction in the signal conversion circuit 3 does not change, both from the first node 345 to the second node 346. Thus, the signal conversion circuit 3 can realize a non-polar connection. Certainly, in a case that the first wire 51 is connected to the negative electrode of the transformer circuit 43 and the second wire 52 is connected to the positive electrode of the transformer circuit 43, the signal conversion circuit 3 can further realize a non-polar connection, which will not be repeated here. 2024278316   11 Dec 2024

[0049] A layout design according to embodiments of the present disclosure may be applied to various DC fan assemblies to at least partially solve the above problems. It should be understood that the layout design according to the embodiments of the present disclosure may further be applied to other electrical components, which is not limited in the embodiments of the present disclosure.

[0050] Various embodiments of the present disclosure have been described above, which are exemplary, not exhaustive, and are not limited to the embodiments disclosed. Many modifications and variations will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the illustrated embodiments. The selection of the terms used herein is intended to best explain the principles of the embodiments, practical applications, or technical improvements in the marketplace, or to enable others of ordinary skill in the art to understand the embodiments disclosed herein.

[0051] The reference to any prior art in this specification is not, and should not be taken as, an acknowledgement or any form of suggestion that such prior art forms part of the common general knowledge.

[0052] It will be understood that the terms “comprise” and “include” and any of their derivatives (e.g. comprises, comprising, includes, including) as used in this specification, and the claims that follow, is to be taken to be inclusive of features to which the term refers, and is not meant to exclude the presence of any additional features unless otherwise stated or implied.

[0053] It will be appreciated by those skilled in the art that the disclosure is not restricted in its use to the particular application or applications described. Neither is the present disclosure restricted in its embodiment with regard to the particular elements and / or features described or depicted herein. It will be appreciated that the disclosure is not limited to the embodiment or embodiments disclosed, but is capable of numerous rearrangements, modifications and substitutions without departing from the scope as set forth and defined by the following claims.

Claims

I / we claim:2024278316   11 Dec 20241. A DC fan assembly, comprising:a DC fan;a first control switch adapted to be disposed at a mounting position;a signal conversion circuit electrically connected to the first control switch, wherein the signal conversion circuit is capable of obtaining a first status signal of the first control switch and converting the first status signal into a first pulse signal; andan action execution circuit electrically connected to the signal conversion circuit and the DC fan, wherein the action execution circuit is capable of identifying the first pulse signal to control the DC fan.

2. The DC fan assembly according to claim 1, wherein the signal conversion circuit comprises an input circuit electrically connected to the first control switch and being capable of obtaining the first status signal.

3. The DC fan assembly according to claim 2, wherein the signal conversion circuit further comprises a determination circuit electrically connected to the input circuit and being capable of judging whether the first status signal is successfully obtained.

4. The DC fan assembly according to claim 3, wherein the signal conversion circuit further comprises a communication circuit, an input end of the communication circuit is electrically connected to the determination circuit, and an output end of the communication circuit is electrically connected to the action execution circuit,wherein in response to that the determination circuit determines that the first status signal is successfully obtained, the communication circuit is capable of converting the first status signal into the first pulse signal and transmitting the first pulse signal to the action execution circuit.

5. The DC fan assembly according to claim 4, wherein the signal conversion circuit further comprises a first rectifier circuit, and the first rectifier circuit and the communication circuit are connected to the action execution circuit through wires.

6. The DC fan assembly according to claim 5, wherein the wires comprise a first wire and a second wire, the first rectifier circuit comprises a first diode, a second diode, a third diode and a fourth diode,wherein the first wire is electrically connected to an anode of the first diode and a cathode of the second diode, the second wire is electrically connected to an anode of the third diode and a cathode of the fourth diode, cathodes of the first diode and the third diode are connected to a first node, and anodes of the second diode and the fourth diode are connected to a second node.2024278316   11 Dec 20247. The DC fan assembly according to claim 5, wherein the action execution circuit comprises a second rectifier circuit electrically connected to a power supply and being capable of converting an AC voltage into a DC output voltage.

8. The DC fan assembly according to claim 7, wherein the action execution circuit further comprises a transformer circuit, an input end of the transformer circuit is electrically connected to the second rectifier circuit, and an output end of the transformer circuit is electrically connected to the first rectifier circuit through the wires.

9. The DC fan assembly according to claim 8, wherein the action execution circuit further comprises a control circuit electrically connected to the output end of the transformer circuit, and the control circuit is electrically connected to the communication circuit through the wires.

10. The DC fan assembly according to claim 9, wherein the DC fan assembly further comprises a second control switch and an illumination lamp, the illumination lamp is electrically connected to the control circuit, and the second control switch is electrically connected to the input circuit.

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