Building fan

Abstract

The invention discloses a building fan, comprising: a fuselage and an air outlet duct, a wind system is arranged in the fuselage, the air outlet duct is a straight pipe structure, and a lighting system is arranged on the top of the air outlet duct; the air outlet duct comprises: an outer air duct and an inner air duct, and the inner air duct is installed in the outer air duct; the bottom end of the outer air duct is supported on the top of the fuselage, and an air outlet area is arranged on the outer air duct; a first driving device is connected to the bottom end of the inner air duct, and an air outlet slit is arranged on the inner air duct; the inner air duct is driven by the first driving device to rotate in the outer air duct to adjust the air outlet angle; the wind flows outward through the air outlet slit and the air outlet area; the lighting system is installed on the top of the outer air duct, and the lighting system does not rotate with the inner air duct. The present invention arranges a lighting system on the top of the air outlet duct, and the function of the building fan is more powerful; when adjusting the wind direction or swinging the wind, only the inner air duct rotates, and the lighting system of the fuselage and the top does not rotate, which reduces the load during rotation, and the rotation is more stable and energy-saving.

Description

Technical Field

[0001] The present invention relates to the technical field of fans, and more particularly to a building fan. Background Art

[0002] A building fan is a type of fan. Traditional building fans are generally ceiling fan structures. However, since traditional building fans are installed on the ceiling and the ceiling of the building is relatively high, the wind effect is relatively poor.

[0003] Moreover, with the change of new generation of building and decoration style, ceiling fans are rarely used because they are not satisfied with the style of modern building and decoration.

[0004] Furthermore, the building fan in the prior art only has a fan function but does not have a lighting function, and the function is relatively simple.

[0005] Finally, in the fan of the prior art, the air outlet column is installed on the fuselage, and the fuselage is installed on the fuselage base. When rotating, the base is used as support, and the fuselage and the air outlet column rotate synchronously to adjust the wind direction. This rotation method has a heavy load during rotation and is unstable. Furthermore, with this technical method, when a light source is provided on the fuselage or the air outlet column, the light source will rotate synchronously with the fuselage and the air outlet column, affecting the lighting. Summary of the invention

[0006] In view of this, the present invention provides a building fan.

[0007] In order to achieve the above-mentioned purpose, the present invention adopts the following technical scheme: a building fan, comprising: a fuselage and an air outlet duct installed on the top of the fuselage, a wind system is arranged in the fuselage, and air is supplied to the outside through the air outlet duct, the air outlet duct is a straight pipe structure, and a lighting system is arranged on the top of the air outlet duct; the air outlet duct comprises: an outer air duct and an inner air duct, and the inner air duct is installed in the outer air duct; the bottom end of the outer air duct is supported on the top of the fuselage, and an air outlet area is arranged on the outer air duct; a first driving device is connected to the bottom end of the inner air duct, and an air outlet slit is arranged on the inner air duct; the inner air duct is driven by the first driving device to rotate in the outer air duct to adjust the air outlet angle; the wind flows out through the air outlet slit and the air outlet area; the lighting system is installed on the top of the outer air duct, and the lighting system does not rotate with the inner air duct.

[0008] In the preferred technical solution, the first driving device comprises: a motor, a transmission gear and a rotating connecting member;

[0009] The motor drives the transmission gear to rotate, so as to drive the rotating connecting member to rotate;

[0010] The outer peripheral wall of the rotating connecting member is formed with a tooth portion meshing with the transmission gear;

[0011] The rotating connecting piece is installed at the bottom end of the inner air duct to drive the inner air duct to rotate.

[0012] In the preferred technical solution, the first driving device includes: a motor and a transmission gear; a toothed portion for gear meshing is formed on the side wall at the bottom end of the inner air duct, and the motor drives the transmission gear to rotate to drive the inner air duct to rotate.

[0013] In a preferred technical solution, the lighting system is connected to the external air duct via an adapter.

[0014] In the preferred technical solution, the adapter includes: a first sleeve, a second sleeve and a conductive seat; the first sleeve is installed on the top of the external air duct; the second sleeve is installed on the lighting system, and the second sleeve is provided with a conductive pin extending downward; the conductive seat is installed on the first sleeve, and a circuit board is installed inside the conductive seat; after the second sleeve is assembled with the first sleeve, the conductive pin is electrically connected to the circuit board.

[0015] In the preferred technical solution, the fuselage includes: an outer shell and a top cover, an air outlet connected to the inner air duct is opened at the center of the top cover, and a wind net is arranged at the air outlet; the end of the inner air duct is installed corresponding to the air outlet; a rotating shaft is formed at the center of the rotating connecting piece, and the rotating shaft is inserted into the center hole of the wind net, so that the rotating connecting piece can be rotatably installed on the top of the fuselage.

[0016] In the preferred technical solution, the inner air duct comprises: a C-shaped tube and an air guide plate installed inside the C-shaped tube, with a narrow air outlet slit on the air guide plate; an opening is formed on the C-shaped tube, the air guide plate is clamped in the C-shaped tube and the narrow air outlet slit corresponds to the opening of the C-shaped tube.

[0017] In the preferred technical solution, the outer air duct is formed with an air outlet area in its length direction, and the area of ​​the air outlet area is larger than the opening area of ​​the C-shaped tube; the inner air duct is installed in the outer air duct, and the inner air duct rotates to change the air outlet angle.

[0018] The preferred technical solution also includes a conical platform; the conical platform is installed on the top of the fuselage; a mounting hole for assembling the air outlet duct and passing through from top to bottom is opened at the center of the conical platform, and the mounting hole corresponds to the air outlet of the fuselage; the external air duct is locked in the mounting hole; and the first drive device is located in the conical platform.

[0019] In the preferred technical solution, the wind power system comprises: a wind shell, forming an installation cavity inside;

[0020] A wind wheel is rotatably mounted in the mounting cavity;

[0021] The wind wheel motor is installed in the installation cavity, connected to the wind wheel and drives the wind wheel to rotate.

[0022] In a preferred technical solution, the lighting system comprises: a connector and a light source assembly; the connector is connected to the second connector.

[0023] It can be seen from the above technical solutions that, compared with the prior art, the present invention has the following technical effects:

[0024] 1. The present invention is provided with a straight air outlet duct on the top of the fuselage. When adjusting the wind direction or swinging the wind, only the inner air duct rotates, while the fuselage and the lighting system on the top do not rotate, which reduces the load during rotation. Compared with the traditional structure in which the fuselage and the air outlet duct rotate synchronously, the rotation of the present invention is more stable and more energy-saving;

[0025] 2. The straight air outlet pipe of the present invention can effectively reduce the overall volume of the building fan; a lighting system is arranged on the top of the air outlet pipe, which adds a lighting function to the fanning function of the building fan, making the function of the building fan more powerful;

[0026] 3. In the present invention, the top of the air outlet duct is connected to the lighting system through an adapter, and the electrical connection between the lighting system and the circuit components inside the fuselage is completed through the adapter, which avoids the trouble of traditional wiring and the influence of the internal air duct on the wires when rotating, making the wiring more convenient;

[0027] 4. The present invention provides a conical platform at the bottom of the air outlet duct, which enables the air outlet duct to be more stably assembled on the top of the fuselage, and the air outlet duct and the conical platform are fixed by screws, so that the assembly is stable; and a buckle assembly is provided between the conical platform and the fuselage, and after the conical platform and the top of the fuselage are rotated and locked, they are locked by the buckle assembly, which provides double insurance and avoids the air outlet duct / conical platform from being accidentally disassembled, making it safer to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.

[0029] Figure 1 It is a structural schematic diagram of the present invention;

[0030] Figure 2 It is a schematic diagram of the cross-sectional structure of the present invention;

[0031] Figure 3 It is a schematic diagram of the decomposition structure of the present invention;

[0032] Figure 4 It is a schematic diagram of the exploded structure of the air outlet pipe and the conical platform in the present invention;

[0033] Figure 5A It is a further exploded structural schematic diagram of the air outlet pipe and the conical platform in the present invention;

[0034] Figure 5B A schematic diagram of the structure of the conical stage in the present invention;

[0035] Figure 6 It is a schematic diagram of the exploded structure of the fuselage in the present invention;

[0036] Figure 7 It is a structural schematic diagram of the transfer joint in the present invention;

[0037] Figure 8 It is a schematic diagram of the exploded structure of the transfer joint in the present invention;

[0038] Fig. 9 It is a schematic diagram of the exploded structure of the transfer joint of the present invention from another angle;

[0039] Fig.10 for Figure 2 A partial enlarged view of point A in the middle. DETAILED DESCRIPTION

[0040] The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, which only illustrate the basic structure of the present invention in a schematic manner, and therefore only show the components related to the present invention.

[0041] In the description of the present application, it should be understood that the terms "longitudinal", "radial", "length", "width", "thickness", "up", "down", "left", "right", "front", "back", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application. In the description of the present application, unless otherwise specified, "plurality" means two or more.

[0042] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0043] Building fan, see Figure 1-3As shown, it includes: a body 100, an air outlet pipe 200, a wind system 300 and a lighting system 400.

[0044] An inner cavity is formed inside the fuselage 100, and an air outlet 101 is formed on the top. The wind system 300 is installed in the inner cavity, and the air outlet duct 200 is installed on the top of the fuselage 100. The wind system 300 generates wind when it is running and sends the wind out through the air outlet duct 200.

[0045] The air outlet duct 200 is installed on the top of the fuselage 100 , and the lighting system 400 is installed on the top of the air outlet duct 200 .

[0046] The air outlet duct 200 is in a straight pipe configuration, and includes an outer air duct 210 and an inner air duct 220 . The end of the outer air duct 210 is installed on the top of the fuselage 100 , and the lighting system 400 is installed on the top of the outer air duct 210 .

[0047] The inner air duct 220 is coaxially installed in the outer air duct 210, and a narrow air outlet slit 201 is formed on the inner air duct 220 for use in air outlet.

[0048] When the air outlet duct 200 of the present invention adjusts the wind direction, the inner air duct 220 rotates alone, and the fuselage 100 and the lighting system 400 do not rotate, so that the lighting effect is not affected while adjusting the wind direction.

[0049] The straight pipe arrangement of the air outlet pipe 200 of the present invention can effectively reduce the volume of the building fan and make the rotation more stable.

[0050] The end of the inner air duct 220 is connected to a first driving device 500 , and the inner air duct 220 is driven to rotate in the outer air duct 210 by the first driving device 500 to achieve the purpose of adjusting the wind direction.

[0051] The outer air duct 210 is provided with an air outlet area 211, and the air outlet area 211 is provided correspondingly to the air outlet slit 201. When the inner air duct 220 rotates, the air outlet slit 201 changes the air outlet angle in the air outlet area 211 to adjust the wind direction.

[0052] The external air duct 210 is limitedly or fixedly installed on the top of the fuselage 100 , and its main function is to support and install the lighting system 400 .

[0053] During use, when the first driving device 500 drives the inner air duct 220 to rotate, the air outlet angle is adjusted; when the inner air duct 220 rotates, the fuselage 100 does not rotate, so that the load during rotation is small, the rotation is more stable, and the effect is better; and the lighting system 400 does not rotate with the inner air duct 220, thereby ensuring the lighting effect.

[0054] Specifically, the first driving device 500 includes: a motor 510 , a transmission gear 520 and a rotating connecting member 530 .

[0055] The rotating connecting piece 530 is hollowed out, and the end of the inner air duct 220 is inserted / sleeved in the rotating connecting piece 530, and a tooth portion 531 meshing with the transmission gear 520 is formed on the outer peripheral wall of the rotating connecting piece 530. When the motor 510 drives the transmission gear 520 to rotate, the rotating connecting piece 530 is driven to rotate, thereby driving the inner air duct 220 to rotate.

[0056] In order to make the connection between the inner air duct 220 and the rotating connecting member 530 more stable, a screw hole is formed at the bottom of the C-shaped tube 221, and a screw hole is also formed on the rotating connecting member 530, and the two are locked by screwing.

[0057] In another embodiment, the first driving device 500 may also be configured to include: a motor 510 and a transmission gear 520 , and a tooth portion is directly formed on the outer wall of the bottom end of the inner air duct 220 , and the transmission gear 520 may directly mesh with the tooth portion of the inner air duct 220 .

[0058] See also Figure 4 As shown in FIG. 5 , the inner air duct 220 comprises: a C-shaped tube 221 and an air guide plate 222 installed inside the C-shaped tube 221 , and an air outlet slit 201 is provided on the air guide plate 222 .

[0059] The C-shaped tube 221 is formed with an opening 2211 along its length direction, and the air guide plate 222 is installed corresponding to the opening 221 .

[0060] In a further embodiment, the air guide plate 222 is inserted into the C-shaped tube 221 from top to bottom or from bottom right to top.

[0061] In a further embodiment, the inner wall of the C-shaped tube 221 is provided with an inwardly protruding clamping strip 2212, and the clamping strip 2212 forms an area for the air guide plate 222 to be stably clamped. After installation, due to the restriction of the clamping strip 2212, the air guide plate 222 cannot move or rotate horizontally relative to the C-shaped tube 221 (except for up and down movement during disassembly);

[0062] In a further embodiment, the air guide plate 222 may be of segmented design. Since the C-shaped tube 221 is relatively long, the segmented design of the air guide plate 222 is convenient for assembly.

[0063] In a further embodiment, the outer air duct 210 is formed with an air outlet area in its length direction, and the area of ​​the air outlet area is larger than the area of ​​the opening 2211 of the C-shaped tube 221. The inner air duct 220 is installed in the outer air duct 210. When the inner air duct 220 rotates, the air outlet slit 201 on the air guide plate 222 changes the air outlet angle in the air outlet area.

[0064] This structure of the inner air duct 220 also further facilitates the disassembly and cleaning of the inner air duct 220 .

[0065] In a further embodiment, the outer air duct 210 includes: an outer tube 211 and an inner tube 212 , wherein the inner tube 212 is installed in the outer tube 211 and is positioned by being locked to prevent the inner tube 212 from rotating in the outer tube 211 .

[0066] A conical platform 600 is installed at the bottom of the air outlet duct 200 , and the air outlet duct 200 is stably installed on the top of the fuselage 100 through the conical platform 600 .

[0067] See also Figure 3-5B as well as Fig.10 As shown, a mounting hole 601 penetrating from top to bottom is provided at the center of the conical platform 600, and the shape of the mounting hole 601 matches the cross-sectional shape of the air outlet pipe 200, so as to facilitate the insertion and installation of the air outlet pipe 200;

[0068] In order to ensure stable assembly of the air outlet duct 200 , a flange 602 is formed in the mounting hole 601 . When the air outlet duct 200 is installed, the bottom surface of the outer air duct 210 is supported on the flange 602 , and the outer air duct 210 is fastened to the flange 602 by screws.

[0069] The rotating connecting member 530 is located in the mounting hole 601, and the rotating connecting member 530 is hollowed out or hollow; and the mounting hole 601 is installed corresponding to the air outlet 101 on the fuselage 100 to facilitate air outlet; the wind flow is pushed by the wind system 300 through the air outlet 101 and the rotating connecting member 530 into the inner air duct 220.

[0070] In a further embodiment, the conical platform 600 includes: a bottom cover 610 and a conical surface cover 620, and through holes are opened at the centers of the bottom cover 610 and the surface cover 620 to form the mounting hole 601. The bottom cover 610 and the surface cover 620 are locked by screws, and the first driving device 500 is installed in the conical platform 600.

[0071] For further implementation, please refer to Figure 6 As shown, the body 100 includes: an outer shell 110 , a top cover 120 and a bottom shell 130 , the bottom shell 130 is installed at the bottom of the outer shell 110 , and the top cover 120 is installed at the top of the outer shell 110 .

[0072] An air outlet 101 connected to the inner air duct 220 is provided at the center of the top cover 120 , and an air net 102 is provided at the air outlet 101 .

[0073] The top cover 120 includes: a bottom plate 121 and an annular side plate 122, so that an inner concave position is formed on the top cover 120 for assembling the conical platform 600. During assembly, the conical platform 600 is placed in the inner concave position.

[0074] The wind net 102 is disposed at the center of the bottom plate 121 .

[0075] When the conical platform 600 is assembled, the mounting hole 601 corresponds to the air outlet 101, and a rotating shaft 532 is formed at the center of the rotating connecting member 530. The rotating shaft 532 is inserted into the central hole of the wind net 102, so that the rotating connecting member 530 can be rotatably installed on the top of the fuselage 100, and the rotating connecting member 530 can also stably rotate around the rotating shaft 532.

[0076] From the above, it can be known that when the wind system 300 is running, the generated wind is ejected outward through the air outlet 101, the rotating connecting part 530, the inner air duct 220, and the air outlet narrow slit 201 to form a blowing effect; and the motor 510 drives the rotating connecting part 530, and it is forward and reverse transmission, to realize the forward rotation of the inner air duct 220 to adjust the wind direction or realize swinging air outlet.

[0077] In some other embodiments, the external air duct 210 may be changed from being tubular to being other shapes, which can mainly realize the overall stable assembly of the air outlet duct 200 on the top of the fuselage 100 and can be used to support the lighting system 400.

[0078] In a further embodiment, the housing 110 is provided with an air inlet, and an air inlet net 140 or a dustproof net is provided at the air inlet. The air inlet net 140 or the dustproof net can be detachably installed on the housing 110 .

[0079] In a further embodiment, the conical platform 600 can be quickly disassembled and installed on the top of the fuselage 100. An L-shaped groove 603 is formed on the outer wall of the conical platform 600, and a clamping protrusion 123 is formed on the inner wall of the side plate 122. When the conical platform 600 is installed in the inner concave position of the top cover 120 during assembly, the clamping protrusion 123 corresponds to the L-shaped groove and enters the end limit of the L-shaped groove 603 after rotating counterclockwise by an angle A; when disassembling, the conical platform 600 is rotated clockwise by an angle A, and the conical platform 600 is lifted up, and the clamping protrusion 123 leaves the L-shaped groove 603 to complete the disassembly;

[0080] In a further embodiment, the conical platform 600 is provided with a buckle assembly 630, which includes: a button 631 exposed on the front cover 620, a locking tongue 631 installed on the bottom cover 610 and triggered by the button 631, and the locking tongue 631. The locking tongue 631 protrudes outward from the outer wall of the conical platform 600 under the thrust of the spring and is locked in the locking groove 124 on the inner wall of the side plate 122; the button 631 triggers the locking tongue 631 to be retracted inwardly into the conical platform 600 and leave the locking groove 124. In this way, after the conical platform 600 is assembled, when the button 631 is not triggered, the conical platform 600 cannot be rotated and disassembled, making it safer to use.

[0081] In a further embodiment, the portion of the locking tongue 631 protruding outwards has a guiding surface.

[0082] In a further embodiment, the wind power system 300 includes: a wind housing 310, a wind wheel 320, and a wind wheel motor 330. The wind housing 310 is installed in the inner cavity of the housing 110, and a mounting cavity is formed inside the wind housing 310. The wind wheel 320 can be rotatably mounted in the mounting cavity. The wind wheel motor 330 is installed in the mounting cavity and connected to the wind wheel 320 to drive the wind wheel 320 to rotate; and the wind housing 310 has an air inlet and an air outlet, and the air outlet is arranged corresponding to the air outlet 101.

[0083] In a further embodiment, the lighting system 400 is connected to the external air duct 210 via an adapter 700 .

[0084] See also Figure 7-9 As shown, the adapter 700 includes: a first sleeve 710, a second sleeve 720 and a conductive seat 730. The first sleeve 710 is sleeved on the top of the air outlet duct 200 and fixed to the external air duct 210 by screws; the second sleeve 720 is connected to the lighting system 400, and the conductive seat 730 is installed between the first sleeve 710 and the second sleeve 720.

[0085] A circuit board 731 is installed inside the conductive seat 730 , and a conductive pin 721 extending downward is provided on the second head 720 . After the second head 720 is assembled with the first head 710 , the conductive pin 721 is electrically connected to the circuit board 731 .

[0086] This design of the adapter 700 facilitates the electrical connection between the lighting system 400 and the circuit components in the body 100. When wiring, the circuit components in the body 100 only need to be electrically connected to the circuit board 731, and the lighting component 400 is installed on the first head 710 through the second head 720 to complete the electrical connection, eliminating the difficulty of traditional wiring and the influence of the rotation of the inner air duct 200 on the wiring. When wiring, the wires can be routed through the reserved space in the outer air duct 210.

[0087] In a further embodiment, the lighting system 400 includes: a connector 410 and a light source assembly 420, and the connector 410 is socketed with a second socket 720. More preferably, the second socket 720 is fixed to the connector 410 by screws, so that during disassembly or maintenance, the second socket 720 is disassembled together with the lighting system 400, and the light source assembly 420 is electrically connected to the conductive pin 721.

[0088] In a further embodiment, a circuit component is disposed inside the fuselage 100, and a control panel is disposed on the surface of the fuselage 100. The control panel, the wind power system 300, the first driving device 500 and the circuit component are electrically connected.

[0089] The above description of the disclosed embodiments enables one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. Building fan, including: The fuselage and the air outlet pipe installed on the top of the fuselage, the fuselage is provided with a wind system, and the air is sent out through the air outlet pipe, and the characteristics are: The wind power system comprises: A wind housing, an installation cavity is formed inside; A wind wheel is rotatably mounted in the mounting cavity; A wind wheel motor is installed in the installation cavity, connected to the wind wheel and drives the wind wheel to rotate; The air outlet pipe is a straight pipe structure, and a lighting system is arranged on the top of the air outlet pipe; The air outlet duct includes: an outer air duct and an inner air duct, and the inner air duct is installed in the outer air duct; The bottom end of the external air duct is supported on the top of the fuselage, and an air outlet area is provided on the external air duct; The bottom end of the inner air duct is connected to a first driving device, and a narrow air outlet slit is provided on the inner air duct; The inner air duct is driven by the first driving device to rotate in the outer air duct to adjust the air outlet angle; The wind flows outward through the narrow air outlet slit and the air outlet area; The inner air duct comprises: a C-shaped tube and an air guide plate installed inside the C-shaped tube, wherein a narrow air outlet slit is formed on the air guide plate; an opening is formed on the C-shaped tube, the air guide plate is clamped in the C-shaped tube, and the narrow air outlet slit corresponds to the opening of the C-shaped tube; The lighting system is installed on the top of the outer air duct, and the lighting system does not rotate with the inner air duct.

2. The building fan according to claim 1, characterized in that: The first driving device comprises: a motor, a transmission gear and a rotating connecting member; The motor drives the transmission gear to rotate, so as to drive the rotating connecting member to rotate; The outer peripheral wall of the rotating connecting member is formed with a tooth portion meshing with the transmission gear; The rotating connecting piece is installed at the bottom end of the inner air duct to drive the inner air duct to rotate.

3. The building fan according to claim 1, characterized in that: The first driving device comprises: a motor and a transmission gear; a toothed portion for gear meshing is formed on the side wall at the bottom end of the inner air duct, and the motor drives the transmission gear to rotate to drive the inner air duct to rotate.

4. The building fan according to claim 1, characterized in that: The lighting system is connected to the external air duct via an adapter.

5. The building fan according to claim 4, characterized in that: The adapter comprises: a first sleeve, a second sleeve and a conductive seat; The first set of heads is installed on the top of the external air duct; The second head is installed on the lighting system, and a conductive pin extending downward is arranged on the second head; The conductive seat is installed on the first head, and a circuit board is installed inside the conductive seat; After the second sleeve is assembled with the first sleeve, the conductive pin is electrically connected to the circuit board.

6. The building fan according to claim 2, characterized in that: The fuselage comprises: an outer shell and a top cover, an air outlet connected to the inner air duct is opened at the center of the top cover, and a wind net is arranged at the air outlet; The end of the inner air duct is installed corresponding to the air outlet; A rotating shaft is formed at the center of the rotating connecting piece, and the rotating shaft is inserted into the center hole of the wind net, so that the rotating connecting piece can be rotatably installed on the top of the fuselage.

7. The building fan according to claim 1, characterized in that: The outer air duct is formed with the air outlet area in its length direction, and the area of ​​the air outlet area is larger than the opening area of ​​the C-shaped tube; The inner air duct is installed in the outer air duct, and the inner air duct rotates to change the air outlet angle.

8. The building fan according to claim 1, characterized in that: Also includes a conical platform; The conical platform is installed on the top of the fuselage; a mounting hole for assembling the air outlet pipe and penetrating from top to bottom is opened at the center of the conical platform, and the mounting hole corresponds to the air outlet of the fuselage; The external air duct is locked in the mounting hole; The first driving device is located in the conical platform.

9. The building fan according to claim 1, characterized in that: The lighting system comprises: Connector and light source assembly; The connecting head is connected to the second set of heads.

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