A holographic fan and a drone equipped with the fan

Abstract

The present invention relates to the field of holographic fans, and specifically discloses a holographic fan and a drone equipped with the fan, including a display device and a rotating drive device for driving the display device, wherein the display device includes a rigid display device and a telescopic rod supporting the rigid display device, wherein the rigid display device includes a rigid display component arranged in the telescopic rod and a linear moving mechanism for driving the rigid display component to move longitudinally, wherein the linear moving mechanism drives the rigid display component to move longitudinally in the telescopic rod; when the telescopic rod is in a retracted state, each rigid display component is arranged in parallel in an axial direction; when the telescopic rod is in an extended state, each rigid display component is extended in series in an axial "I" shape. Since the holographic fan of the present invention adopts a flexible display component with a variable length, it can be retracted and stored when carried, which brings convenience to transportation, and the size of the displayed graphics can also be changed by changing the length of the light bar when in use, and it has strong adaptability to scene requirements.

Description

Technical Field

[0001] The present invention relates to the field of holographic fans, and in particular to a holographic fan and a drone equipped with the fan. Background Art

[0002] Existing telescopic rods are generally composed of a group of sleeves of different diameters, which can be manually extended or shortened, but cannot be automatically extended or shortened, which brings inconvenience to use. Some telescopic rods can be automatically extended and retracted, which are generally driven by a built-in motor to drive a multi-section threaded sleeve to achieve the longitudinal telescopic movement of the telescopic rod. Due to their structural reasons, such telescopic rods are generally expensive to manufacture and have complex processes, which limits their application scenarios.

[0003] In the prior art, holographic fans usually use a light bar formed by welding light beads on a long rigid PCB substrate as a display component. Many LED light beads are distributed on the long light bar, which is installed on the motor shaft in the shape of fan blades. According to the number of groups of light bars, there are various structural forms such as "one" shape and "cross" shape, such as Figure 1 and Figure 2 As shown, when the motor drives the light bar to rotate, 3D graphics are generated. However, the length of the long light bar is generally fixed, which makes it inconvenient to store and transport it. When in use, the size of the displayed graphics cannot be changed by changing the length of the light bar, that is, the adaptability to scene requirements is relatively poor. In order to change the maximum displayed graphics by changing the length of the light bar, various holographic fans with different light bar lengths need to be produced.

[0004] Due to the above-mentioned problems, the holographic fan carried by the drone in the prior art makes the whole machine inconvenient to carry, store and transport. When in use, the size of the displayed graphics cannot be changed by changing the length of the light bar, and the adaptability to the requirements of the use scenario is relatively poor. Summary of the invention

[0005] The purpose of the present invention is to provide a holographic fan and a drone equipped with the fan in view of the shortcomings of the prior art. The holographic fan is provided with a telescopic rod, which has a low manufacturing cost and a simple structure and manufacturing process. The holographic fan using the telescopic rod has a telescopic and retractable fan blade. The holographic fan is mounted on a drone to form a drone with a holographic fan that can automatically retract and change the length of the light bar.

[0006] In order to solve the above technical problems, the following technical solutions are adopted:

[0007] A holographic fan comprises a holographic fan body, a display device and a rotary drive device for driving the display device, wherein the display device is radially installed along the rotation axis of the rotary drive device, and is characterized in that: the display device is provided with at least two groups, and each group of the display devices is uniformly arranged in a circular matrix in the radial direction around the outer end of the rotary drive device, one group of the display devices comprises a rigid display device and a telescopic rod supporting the rigid display device, the rigid display device comprises a rigid display component arranged in the telescopic rod and a linear moving mechanism for driving the rigid display component to translate longitudinally, the rigid display component is in a long strip shape and is arranged along the axial direction of the telescopic rod, and the linear moving mechanism drives the rigid display component to move longitudinally in the telescopic rod;

[0008] When the telescopic rod is in a retracted state, each of the rigid display components is axially arranged in parallel;

[0009] When the telescopic rod is in the extended state, each of the rigid display components is extended in series in an axial “I” shape;

[0010] The rigid display component is provided with a sliding conductive mechanism.

[0011] Furthermore, the linear motion mechanism is a linear motor or an electromagnet arranged in the telescopic rod.

[0012] When the telescopic rod is to be retracted, the linear moving mechanism drives the rigid display assembly in the middle to move along the longitudinal outer side direction of the telescopic rod;

[0013] When the telescopic rod is to be extended, the linear moving mechanism drives the rigid display assembly on the outer side in the longitudinal direction to move along the middle direction of the telescopic rod.

[0014] Further, the linear movement mechanism includes an elastic structure and inclined surfaces arranged at both ends of the rigid display assembly, the elastic structure abuts against the rigid display assembly on the longitudinal outer side, the elastic structure has a tendency to drive the rigid display assembly on the longitudinal outer side to move along the longitudinal inner side direction of the telescopic rod, and the inclined surfaces at the adjacent head and tail ends of the rigid display assembly cooperate with each other;

[0015] When the telescopic rod is to be retracted, the rigid display assembly with the elastic structure on the longitudinal outer side and the adjacent rigid display assembly move outward along the longitudinal direction of the telescopic rod through the inclined plane cooperation;

[0016] When the telescopic rod is to be extended, the elastic structure drives the rigid display assembly on the outer side in the longitudinal direction to move along the middle direction of the telescopic rod.

[0017] Furthermore, the rigid display components are arranged in the same plane.

[0018] Furthermore, a power supply display control component is arranged on the rigid display component close to the rotating axis of the rotating drive device, and the power supply display control component is composed of a wireless power supply transmitting coil arranged on the holographic fan body and a receiving coil arranged on the rigid display component.

[0019] Furthermore, the rigid display component is a rigid LED light bar component or a rigid display screen component.

[0020] Furthermore, the rigid display device also includes a telescopic driving device, and an output end of the telescopic driving device is engaged with the rigid display component.

[0021] Furthermore, the telescopic driving device is a transmission system consisting of a driving motor and a driving member, wherein the driving member is a driving worm or a driving gear, and the output end of the driving motor is connected to the driving member, and the teeth of the driving member are meshed with the rigid display component.

[0022] Furthermore, a guide rail is provided opposite to the transmission system; an arc-shaped concave surface is provided on the side of the guide rail opposite to the transmission system, a groove matching the teeth of the rigid display component exposed by the driving member is provided from bottom to top in the middle of the arc-shaped concave surface, and the guide rail extends toward the middle of the holographic fan body.

[0023] Furthermore, the rigid display assembly is arranged between the guide rail and the driving member, and the teeth on the driving member are engaged with the tooth grooves on the rigid display assembly to press the rigid display assembly onto the guide rail.

[0024] Furthermore, a clutch device is included, and the clutch device is used to put the teeth of the driving member and the tooth grooves on the rigid display component into two states: engagement and separation.

[0025] Furthermore, the telescopic rod includes a fixed arm section and a final arm section, the fixed arm section is rotatably arranged on a rotating shaft of the rotary drive device, and the final arm section is arranged at an end away from the rotary drive device.

[0026] Furthermore, a plurality of intermediate boom sections are provided between the fixed boom section and the final boom section.

[0027] Furthermore, an inner groove is longitudinally formed on the outer side wall of each arm section of the telescopic rod, and the inner groove is a straight line and is parallel to each other and on the same plane.

[0028] Furthermore, the rigid display assembly is extended or shortened in a groove in the outer wall of each arm section.

[0029] The sliding conductive mechanism is arranged on the rigid display assembly between the fixed arm section and the last arm section of the telescopic rod. The sliding conductive mechanism includes a conductive part and a sliding conductive unit. The arm section of each rigid display assembly is provided with the strip-shaped conductive part extending along the length direction. The sliding conductive unit is arranged between the arm sections of the rigid display assemblies of two adjacent levels, and when the arm sections of the rigid display assemblies of two adjacent levels move relatively, the conductive parts of the arm sections of the rigid display assemblies of two adjacent levels are electrically connected. The sliding conductive unit is arranged on the arm section of the rigid display assembly of the latter level among the arm sections of the rigid display assemblies of two adjacent levels, and can move with the arm section of the rigid display assembly where it is located relative to the arm section of the rigid display assembly of the previous level.

[0030] Furthermore, the sliding conductive unit includes a conductive contact piece and an elastic piece, the conductive contact piece is movably connected to the arm section of the rigid display component through the elastic piece, and is pressed against the conductive part of the arm section of the previous level rigid display component by the elastic piece, the conductive contact piece includes a brush, and the corresponding conductive part is connected to the brush.

[0031] Furthermore, each group of the rigid display components extends or shortens synchronously towards each other.

[0032] A drone is equipped with the above-mentioned holographic fan.

[0033] The above technical solution has the following beneficial effects:

[0034] The present invention is a holographic fan and a drone equipped with the fan. Since the holographic fan of the present invention adopts a rigid display component with variable length, it can be shrunk and stored when carried, which is convenient for transportation. When in use, the size of the displayed graphics can be changed by changing the length of the light bar, and it has strong adaptability to scene requirements. The rigid display component is a rigid LED light bar component or a rigid display screen component. Specifically, the rigid LED light bar component or the rigid display screen component is in the shape of a long strip. In particular, a light bar made of multiple sections of lamp beads welded on a long strip-shaped rigid PCB substrate in the prior art can be used as a rigid display component. The process is simple, it can be shrunk and stored when carried, which is convenient for transportation. When in use, the size of the displayed graphics can be changed by changing the length of the light bar, and it has strong adaptability to scene requirements.

[0035] The drone provided by the present invention comprises a drone body and the above-mentioned holographic fan, and the holographic fan is arranged on the drone. Since the drone equipped with the holographic fan of the present invention adopts a display component with a variable length, the holographic fan on the drone can be retracted and stored when carried, which brings convenience to transportation. When in use, the size of the displayed graphics can also be changed by changing the length of the light bar, and the adaptability to scene requirements is relatively strong. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] The present invention will be further described below in conjunction with the accompanying drawings:

[0037] Figure 1 It is a structural schematic diagram of a "I"-shaped holographic fan in the prior art;

[0038] Figure 2 The figure is a schematic structural diagram of a "cross" shaped holographic fan in the prior art.

[0039] Figure 3 It is a schematic diagram of the three-dimensional structure of the holographic fan of Example 1 of the present invention.

[0040] Figure 4 It is a schematic side view of the structure of the holographic fan of Example 1 of the present invention.

[0041] Figure 5 For the present invention Figure 4 Schematic diagram of the cross-sectional structure along the B direction.

[0042] Figure 6 For the present invention Figure 4 Schematic diagram of the cross-sectional structure along the A direction.

[0043] Figure 7 It is a schematic diagram of the top view of the holographic fan of Example 1 of the present invention.

[0044] Figure 8 For the present invention Figure 7 Schematic diagram of the cross-sectional structure along the C direction.

[0045] Fig. 9 This is a schematic diagram of the main structure of the holographic fan in the extended state of Example 1 of the present invention.

[0046] Fig.10 It is a schematic diagram of the top view of the structure of the holographic fan in the extended state according to Example 1 of the present invention.

[0047] Fig.11 This is a schematic diagram of the structure of the holographic fan in Example 1 of the present invention in an extended state when viewed from above.

[0048] Fig.12 This is a schematic diagram of the main structure of the extending and retracting light bar assembly of the holographic fan in Example 1 of the present invention.

[0049] Fig.13 It is a bottom view structural schematic diagram of the extending and retracting light bar assembly of the holographic fan in Example 1 of the present invention.

[0050] Fig.14 It is a schematic structural diagram of the tooth groove and the worm gear on the rigid display assembly of Example 2 and Example 3 of the present invention in a separated state.

[0051] Fig.15 It is a schematic structural diagram of the tooth groove and the worm gear on the rigid display assembly of Example 2 and Example 3 of the present invention in a meshing state.

[0052] Fig.16 It is a schematic diagram of the local structure of the rigid display assembly in Example 2 and Example 3 of the present invention, in which the tooth groove and the worm are in a separated state.

[0053] Fig.17 It is a partial structural schematic diagram of the tooth groove and the worm gear on the rigid display assembly of Example 2 and Example 3 of the present invention in a meshing state.

[0054] Fig.18 It is a schematic diagram of the top cross-sectional structure of the fixed arm section of Example 2 and Example 3 of the present invention.

[0055] Fig.19 It is a schematic diagram of the cross-sectional structure of the fixed arm section in Example 2 and Example 3 of the present invention when viewed from above.

[0056] Fig. 20 This is a schematic diagram of the structure of the holographic fan of Example 4 of the present invention mounted on a drone.

[0057] Fig.21 This is a schematic diagram of the structure of the holographic fan of Example 5 of the present invention mounted on a drone.

[0058] Fig. 22 This is a schematic diagram of the structure of the holographic fan of Example 6 of the present invention mounted on a drone.

[0059] Fig.23 This is a schematic diagram of the structure of the holographic fan of Example 7 of the present invention mounted on a drone.

[0060] Fig.24 This is a schematic structural diagram of the telescopic rod in the retracted state of Example 8 of the present invention.

[0061] Fig.25 This is a schematic structural diagram of the telescopic rod in the extended state of Example 8 of the present invention.

[0062] Fig.26 This is a schematic diagram of the internal structure of a rigid display assembly provided with a sliding conductive mechanism in Example 9 of the present invention.

[0063] Fig. 27 This is a schematic diagram of the external structure of the rigid display assembly of Example 9 of the present invention, in which a sliding conductive mechanism is provided.

[0064] In the figure: 1-holographic fan body; 2-display device; 3-rotation drive device; 4-power supply display control component; 6-telescopic drive device; 7-clutch device; 8-sliding conductive mechanism; 10-UAV body; 11-connecting rod; 12-landing bracket; 13-pan head.

[0065] 111 - sealing plate; 112 - guide rail; 113 - arc-shaped concave surface; 114 - arc-shaped hole; 115 - groove.

[0066] 21- Rigid display device; 22- Telescopic rod.

[0067] 211-rigid display component; 212-linear moving mechanism; 2121-elastic structure; 2122-inclined surface;

[0068] 2121-tooth groove.

[0069] 221-fixed arm section; 222-last arm section; 223-intermediate arm section; 224-outer end top surface of telescopic rod; 225-inner groove;

[0070] 2211 - the top surface of the outer end of the fixed arm section; 2212 - the opening of the fixed arm section.

[0071] 2221 - the top surface of the outer end of the last-stage arm segment; 2222 - the opening of the last-stage arm segment.

[0072] 31- Rotation axis.

[0073] 41- Transmitting coil.

[0074] 61 - driving motor; 62 - driving member; 621 - driving worm; 63 - motor bracket.

[0075] 711-compression spring; 712-slider; 713-sliding seat; 714-button; 715-self-locking push rod switch; 716-support of self-locking push rod switch; 717-push rod; 718-mounting hole.

[0076] 81-conductive part; 82-sliding conductive unit. DETAILED DESCRIPTION

[0077] In order to make the purpose, technical scheme and advantages of the present invention clearer, the present invention is further described in detail below through the accompanying drawings and embodiments. However, it should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the scope of the present invention. In addition, in the following description, the description of known structures and technologies is omitted to avoid unnecessary confusion of the concept of the present invention. Example 1

[0078] like Figures 3 to 12As shown, it includes a holographic fan body 1, a display device 2 and a rotation driving device 3 for driving the display device 2.

[0079] As a further explanation of this embodiment, the display device 2 is radially installed along the rotation axis 31 of the rotation drive device 3, and at least two groups of the display devices 2 are provided, and each group of the display devices 2 is evenly arranged in a circular matrix in the radial direction around the outer end of the rotation drive device 3. Generally, the number of the display devices 2 is two, four, six, eight, etc., and each group of the display devices 2 is arranged in a circular matrix on the outer end surface of the rotation drive device 3. In this embodiment, Figures 3 to 8 In the embodiment, the display device 2 is provided with two groups.

[0080] As a further explanation of this embodiment, a group of the display devices 2 includes a rigid display device 21 and a telescopic rod 22 supporting the rigid display device 21, the telescopic rod 22 includes a fixed arm section 221 and a final arm section 222, the fixed arm section 221 is rotatably disposed on the rotating shaft 31 of the rotating drive device 3, and the final arm section 222 is disposed at an end away from the rotating drive device 3.

[0081] As a further explanation of this embodiment, the rigid display device 21 includes a rigid display component 211 arranged in the telescopic rod 22 and a linear moving mechanism 212 that drives the rigid display component to move longitudinally. The rigid display component 211 is long and is arranged along the axial direction of the telescopic rod 22. The linear moving mechanism 212 drives the rigid display group 211 to move longitudinally of the telescopic rod.

[0082] As a further description of this embodiment, the linear motion mechanism 212 is a linear motor or an electromagnet disposed in the telescopic rod 22 .

[0083] Specifically, see Figure 3-Figure 8 When the telescopic rod 22 is in the retracted state, each of the rigid display components 211 is arranged in parallel in the axial direction. The linear moving mechanism 212 drives the rigid display component 211 in the middle to move along the longitudinal outer side direction of the telescopic rod 22, so that when the telescopic rod 22 is retracted, each section of the telescopic rod 22 will not interfere with each other during the extension or retraction process, so that each section of the telescopic rod 22 is completely retracted together, thereby the rigid display components 211 are arranged in parallel in the axial direction, and the rigid display components 211 form a rectangular shape with a similar proportion to the telescopic rod 22.

[0084] Specifically, see Figure 9-13When the telescopic rod 22 is in the extended state, each of the rigid display components 211 is extended in series in an axial straight line. The linear moving mechanism 212 drives the rigid display components 211 on the longitudinal outer side to move along the middle direction of the telescopic rod 22, so that each of the rigid display components 211 is extended in series in an axial straight line in an axial straight line.

[0085] As a further explanation of this embodiment, the rigid display components 211 are arranged in the same plane. However, they may not be arranged in the same plane, in which case the top surface of the telescopic rod 22 needs to be arranged in a transparent state so that the rigid display components 211 can be displayed externally when emitting light.

[0086] As a further illustration of this embodiment, the rigid display component 211 is disposed on the top surface of the telescopic rod 22 . In order to improve the aesthetics of the overall holographic fan, the outer surface of the rigid display component may be flush with the top surface of the telescopic rod 22 .

[0087] As a further explanation of this embodiment, a power supply display control component 4 is arranged on the rigid display component 212 near the rotating shaft 31 of the rotating drive device 3. The power supply display control component 4 is composed of a wirelessly powered transmitting coil 41 arranged on the holographic fan body 1 and a receiving coil arranged on the rigid display component 211. The receiving coil is arranged on the back side of the rigid display component 211 (not shown in the figure).

[0088] As a further explanation of this embodiment, the rigid display component 211 is a rigid LED light bar component or a rigid display screen component. The rigid LED light bar component or the rigid display screen component is in the shape of a long strip. In particular, a light bar made by welding lamp beads on a long strip rigid PCB substrate in the prior art can be used as the rigid display component 211. The process is simple, and it can be retracted and stored when carried, which brings convenience to transportation. When in use, the size of the displayed graphics can also be changed by changing the length of the light bar, and it has strong adaptability to scene requirements.

[0089] As a further explanation of this embodiment, a plurality of intermediate arm sections 223 are provided between the fixed arm section 221 and the final arm section 222. The number of intermediate arm sections 223 is determined according to the length of the long strip light bar of the holographic fan. The longer the long strip light bar is, the more intermediate arm sections 223 are provided.

[0090] As a further explanation of this embodiment, each arm section of the telescopic rod 22 has an inner groove 225 in the longitudinal direction on the outer side wall, and the inner groove 225 is a straight line and parallel to each other and on the same plane. The inner groove 225 is used to lay the rigid display assembly 211 flat.

[0091] As a further illustration of this embodiment, the rigid display assembly 211 is extended or shortened within the inner groove 225 of the outer side wall of each arm section.

[0092] As a further illustration of this embodiment, each group of the rigid display components 211 are synchronously extended or shortened towards each other. Example 2

[0093] See also Figure 14-19 On the basis of Example 1, in order to make the telescopic rod 22 automatically extend and retract, and realize the automatic length change of the rigid display assembly 211, a tooth groove 2121 can be provided on the back of the rigid display assembly 211, and a telescopic driving device 6 can be provided in the telescopic rod 22. The output end of the telescopic driving device 6 is meshed with the tooth groove 2121 of the rigid display assembly 211.

[0094] See also Figure 16-21 Specifically, the telescopic driving device 6 is a transmission system consisting of a driving motor 61 and a driving member 62, wherein the driving member 62 is a driving worm 621 or a driving gear, and the output end of the driving motor 61 is connected to the driving member 62, and the teeth of the driving member 62 are meshed with the tooth grooves 2121 of the rigid display component 211.

[0095] The fixed arm section to the middle lower end is provided with a sealing plate 111 whose diameter matches the inner diameter of the next adjacent arm section. The sealing plate 111 is provided with an arc-shaped hole 114 whose shape matches the cross section of the rigid display assembly 211 in the middle;

[0096] The telescopic driving device 6 is provided with an inner upper end surface of a fixed arm section, and a vertical guide rail 112 is provided on the inner lower surface of the sealing plate 111, and the transmission system is provided opposite to the guide rail 112; an arc-shaped concave surface 113 is provided on the side of the guide rail 112 facing the transmission system, and a groove 115 matching the teeth of the rigid display component 211 exposed by the driving member is provided in the middle of the arc-shaped concave surface 113 from bottom to top, and the guide rail 112 extends downward from the inner lower surface of the sealing plate 111, and the arc-shaped concave surface 113 coincides with the outer side of the contour of the arc-shaped hole 114 on the sealing plate 111.

[0097] The rigid display component 211 is disposed between the guide rail 112 and the driving member 62 , and the teeth on the driving member 62 are engaged with the tooth grooves 2121 of the rigid display component 211 , so that the rigid display component 211 is pressed onto the guide rail 112 . Example 3

[0098] See also Figure 14-19On the basis of Example 2, in order to realize automatic extension and manual switching of the telescopic rod 22, or when the holographic fan is out of power or the telescopic drive device 6 fails, it can still be used normally, the present invention is provided with a clutch device 7, which can easily realize the switching of the holographic fan between the manual telescopic mode and the automatic telescopic mode. When the holographic fan is in the automatic mode and has no power or the telescopic drive device 6 fails, it can be manually switched to the manual mode with one button, which does not affect the normal use of the user.

[0099] See also Figure 14-17 As a further explanation of this embodiment, the clutch device 7 is used to put the teeth of the driving member 62 and the tooth grooves 2121 on the rigid display component 211 in two states: engagement and disengagement.

[0100] As a further explanation of this embodiment, the clutch device 7 includes a compression spring 711, a compression spring 712 and a slide 713. The slide 713 is arranged in the holographic fan body 1 or the telescopic rod 22. A compression spring 712 is arranged in the slide 713. A compression spring 711 is placed between the compression spring 712 and the slide 713. The compression spring 712 is connected to the motor bracket 63 or the compression spring 712 and the motor bracket 63 are integrally formed.

[0101] As a further explanation of this embodiment, the clutch device 7 also includes a button 714 and a self-locking push rod switch 715, the button 714 is arranged on the side of the telescopic rod 22, and the support 716 of the self-locking push rod switch is fixed on the inner wall of the holographic fan body 1 or the telescopic rod 22 facing the transmission system; a push rod 717 is provided at one end of the self-locking push rod switch 715, and the push rod 717 is abutted against the side wall of the drive motor 61, and a mounting hole 718 is opened on the inner wall of the holographic fan body 1 or the telescopic rod 22, and the button 714 is installed on the other end of the self-locking push rod 717 switch 715 through the mounting hole 718.

[0102] As a further explanation of this embodiment, when the compression spring 712 and the motor bracket 63 are integrally formed, the clutch device 7 is composed of a self-locking push rod switch 715, one end of the push rod 717 of the self-locking push rod switch 715 is against the side wall of the drive motor of the worm gear transmission system, and the operating end of the self-locking push rod switch 715 passes through the opening on the inner wall of the telescopic rod 22 to be exposed outside the sleeve and the end is in the shape of a button 714. The left side of the lower end of the motor bracket 63 is made into the shape of a compression spring 712, and the compression spring 712 and the slide seat 713 can be slidably matched. A compression spring 711 is placed between the compression spring 712 and the slide seat 713. Pressing the button 714 can make the teeth on the drive member 62 and the tooth groove 2121 on the rigid display component 211 in two states of engagement and disengagement. Specifically, this embodiment is a worm gear transmission system, Fig.14 and Fig.16 The button 714 is in the pressed state, and one end of the push rod 717 of the self-locking push rod switch 715 moves leftward, forcing the worm of the worm gear transmission system to move leftward and be in a separated state from the tooth groove 2121 of the rigid display component 211; Fig.15 and Fig.17 The button 714 is in the pop-up state, and the push rod 717 of the self-locking push rod switch 715 is out of contact with the right side wall of the motor of the worm gear transmission system. The compression spring 712 is driven by the compression spring 711 to move rightward along the slide 713 so that the worm of the worm gear transmission system is in meshing state with the tooth groove 2121 on the rigid display component 211.

[0103] As a further explanation of this embodiment, when the compression spring 712 and the motor bracket 63 are separately provided, the compression spring 712 and the motor bracket 63 are two separate components, and the compression spring 712 and the motor bracket 63 need to be fixed together by a connection method such as screws. Except for the structural difference that the compression spring 712 and the motor bracket 63 are separately provided, the technical effect achieved by using the compression spring 712 and the motor bracket 63 is the same as the technical effect of the compression spring 712 and the motor bracket 63 being integrally formed. Example 4

[0104] See also Fig. 20 The holographic fan of Example 1, 2 or 3 is mounted on the drone body 10. Specifically, the holographic fan of this embodiment is connected to the tail of the drone body 10 through a connecting rod 11 or a gimbal 13, and the holographic fan display surface is arranged on the drone body 10 in a vertical state. Example 5

[0105] See also Fig.21 The holographic fan of embodiment 1, 2 or 3 is mounted on the drone body 10. Specifically, the holographic fan of this embodiment is connected to the head of the drone body 10 through a connecting rod 11 or a gimbal 13, and the holographic fan display surface is arranged on the drone body 10 in a vertical state. Example 6

[0106] See also Fig. 22 , the holographic fan of embodiment 1, 2 or 3 is mounted on the drone body 10. Specifically, the holographic fan is connected to the lower part of the drone body 10 through the connecting rod 11 or the gimbal 13, and the display surface of the holographic fan is in a horizontal downward state. The connecting rod 11 or the gimbal can be raised and lowered along the Z-axis direction, so that the holographic fan does not generate mechanical interference with the landing bracket 12 of the drone body 10 when working. Example 7

[0107] See also Fig.23The holographic fan of Example 1, 2 or 3 is mounted on the drone body 10. Specifically, the holographic fan is connected to the lower part of the drone body 10 through the X, Y, Z three-axis gimbal 13, and the adjustable trajectory posture of the holographic fan display surface is a hemispherical surface. Example 8

[0108] See also Fig.24 and 25 , which is different from the first embodiment in that: the linear motion mechanism is adjusted in this embodiment, and the linear motion mechanism includes an elastic structure 2121 and inclined surfaces 2122 arranged at both ends of the rigid display component 211, the elastic structure 2121 abuts against the rigid display component 211 on the longitudinal outer side, and the elastic structure 2121 has a tendency to drive the rigid display component 211 on the longitudinal outer side to move along the longitudinal inner side direction of the telescopic rod, and the inclined surfaces 2122 at the adjacent head and tail ends of the rigid display component 211 cooperate with each other. The elastic structure 2121 is a spring or a compression spring.

[0109] Specifically, when the telescopic rod 22 is to be retracted, the rigid display assembly 211 with the elastic structure 2121 on the longitudinal outer side cooperates with the adjacent rigid display assembly 211 through the inclined surface 2122 to move outward along the longitudinal direction of the telescopic rod 22 .

[0110] Specifically, when the telescopic rod 22 is to be extended, the elastic structure 2121 drives the rigid display assembly 211 on the outer side in the longitudinal direction to move along the middle direction of the telescopic rod 22 . Example 9

[0111] See also Fig.26 and 27 On the basis of Example 1, a sliding conductive mechanism 8 is provided on the rigid display assembly 211. The sliding conductive mechanism 8 is arranged on the rigid display assembly 211 between the fixed arm section 221 and the last arm section 222 of the telescopic rod 22, and the sliding conductive mechanism 8 includes a conductive portion 81 and a sliding conductive unit 82. The arm sections of each rigid display assembly 211 are provided with the strip-shaped conductive portion 81 extending along the length direction. The sliding conductive unit 82 is arranged between the arm sections of the rigid display assemblies 211 of two adjacent levels, and when the arm sections of the rigid display assemblies 211 of two adjacent levels move relatively, the conductive portions 81 of the arm sections of the rigid display assemblies 211 of the two adjacent levels are electrically connected. The sliding conductive unit 82 is arranged on the arm section of the rigid display assembly 211 of the next level among the arm sections of the rigid display assemblies 211 of the two adjacent levels, and can move with the arm section of the rigid display assembly 211 where it is located relative to the arm section of the rigid display assembly 211 of the previous level.

[0112] Specifically, the sliding conductive unit 82 includes a conductive contact piece and an elastic piece, and the conductive contact piece is movably connected to the arm section of the rigid display component 211 through the elastic piece, and is pressed tightly against the conductive part 81 of the arm section of the previous level rigid display component 211 by the elastic piece, and the conductive contact piece includes a brush, and the corresponding conductive part 81 is connected to the brush.

[0113] Since the holographic fan of the present invention adopts a rigid display component 211 with variable length, it can be retracted and stored when carried, which is convenient for transportation. When in use, the size of the displayed graphics can be changed by changing the length of the light bar, and it has strong adaptability to scene requirements. The rigid display component 211 is a rigid LED light bar component or a rigid display screen component, and the rigid LED light bar component or the rigid display screen component is in a long strip shape. In particular, a light bar made of multiple sections of lamp beads welded on a long strip rigid PCB substrate in the prior art can be used as the rigid display component 211, which has a simple process, can be retracted and stored when carried, which is convenient for transportation, and the size of the displayed graphics can be changed by changing the length of the light bar when in use, and it has strong adaptability to scene requirements.

[0114] The drone provided by the present invention includes a drone body 10 and the above-mentioned holographic fan, and the holographic fan is arranged on the drone body 10. Since the drone body 10 equipped with the holographic fan of the present invention adopts a display component with a variable length, the holographic fan on the drone body can be retracted and stored when carried, which brings convenience to transportation. When in use, the size of the displayed graphics can also be changed by changing the length of the light bar, and the adaptability to scene requirements is relatively strong.

[0115] The above are only specific embodiments of the present invention, but the technical features of the present invention are not limited thereto. Any simple changes, equivalent replacements or modifications made based on the present invention to solve basically the same technical problems and achieve basically the same technical effects are all included in the protection scope of the present invention.

Claims

1. A holographic fan, comprising a holographic fan body, a display device and a rotation drive device for driving the display device, wherein the display device is radially installed along the rotation axis of the rotation drive device, characterized in that: The display devices are provided with at least two groups, and each group of the display devices is evenly arranged in a circular matrix in the radial direction around the outer end of the rotating drive device. One group of the display devices includes a rigid display device and a telescopic rod supporting the rigid display device. The rigid display device includes a rigid display component arranged in the telescopic rod and a linear moving mechanism driving the rigid display component to move longitudinally. The rigid display component is in a long strip shape and is arranged along the axial direction of the telescopic rod. The linear moving mechanism drives the rigid display component to move longitudinally in the telescopic rod. When the telescopic rod is in a retracted state, each of the rigid display components is axially arranged in parallel; When the telescopic rod is in the extended state, each of the rigid display components is extended in series in an axial "I" shape; The rigid display component is provided with a sliding conductive mechanism; The linear motion mechanism is a linear motor or an electromagnet arranged in the telescopic rod. When the telescopic rod is to be retracted, the linear moving mechanism drives the rigid display assembly in the middle to move along the longitudinal outer side direction of the telescopic rod; When the telescopic rod is to be extended, the linear moving mechanism drives the rigid display assembly on the longitudinal outer side to move along the middle direction of the telescopic rod; The telescopic rod comprises a fixed arm section and a final arm section, wherein the fixed arm section is rotatably arranged on the rotating shaft of the rotating drive device, and the final arm section is arranged at an end away from the rotating drive device; The sliding conductive mechanism is arranged on the rigid display assembly between the fixed arm section and the last arm section of the telescopic rod. The sliding conductive mechanism includes a conductive part and a sliding conductive unit. Each arm section of the rigid display assembly is provided with a strip-shaped conductive part extending along the length direction. The sliding conductive unit is arranged between the arm sections of the rigid display assemblies of two adjacent levels, and when the arm sections of the rigid display assemblies of two adjacent levels move relatively, the conductive parts of the arm sections of the rigid display assemblies of two adjacent levels are electrically connected. The sliding conductive unit is arranged on the arm section of the rigid display assembly of the latter level among the arm sections of the rigid display assemblies of two adjacent levels, and can move with the arm section of the rigid display assembly where it is located relative to the arm section of the rigid display assembly of the previous level.

2. A holographic fan according to claim 1, characterized in that: The linear moving mechanism includes an elastic structure and inclined surfaces arranged at both ends of the rigid display assembly, the elastic structure abuts against the rigid display assembly on the longitudinal outer side, and the elastic structure has a tendency to drive the rigid display assembly on the longitudinal outer side to move along the longitudinal inner side direction of the telescopic rod, and the inclined surfaces at the adjacent head and tail ends of the rigid display assembly cooperate with each other; When the telescopic rod is to be retracted, the rigid display assembly with the elastic structure on the longitudinal outer side and the adjacent rigid display assembly move outward along the longitudinal direction of the telescopic rod through the inclined plane cooperation; When the telescopic rod is to be extended, the elastic structure drives the rigid display assembly on the outer side in the longitudinal direction to move along the middle direction of the telescopic rod.

3. A holographic fan according to claim 1 or 2, characterized in that: The rigid display components are arranged in the same plane.

4. A holographic fan according to claim 1 or 2, characterized in that: A power supply display control component is arranged on the rigid display component close to the rotating axis of the rotating drive device, and the power supply display control component is composed of a wireless power supply transmitting coil arranged on the holographic fan body and a receiving coil arranged on the rigid display component.

5. The holographic fan according to claim 1, characterized in that: The rigid display component is a rigid LED light bar component or a rigid display screen component.

6. The holographic fan according to claim 1, characterized in that: The rigid display device further comprises a telescopic driving device, and an output end of the telescopic driving device is engaged with the rigid display component.

7. The holographic fan according to claim 6, characterized in that: The telescopic driving device is a transmission system composed of a driving motor and a driving member, wherein the driving member is a driving worm or a driving gear, the output end of the driving motor is connected to the driving member, and the teeth of the driving member are meshed with the rigid display component.

8. A holographic fan according to claim 7, characterized in that: A guide rail is provided opposite to the transmission system; an arc-shaped concave surface is provided on the side of the guide rail opposite to the transmission system, a groove matching the teeth of the rigid display component exposed by the driving member is provided from bottom to top in the middle of the arc-shaped concave surface, and the guide rail extends toward the middle of the holographic fan body.

9. A holographic fan according to claim 8, characterized in that: The rigid display component is arranged between the guide rail and the driving member, and the teeth on the driving member are engaged with the tooth grooves on the rigid display component to press the rigid display component onto the guide rail.

10. A holographic fan according to claim 9, characterized in that: It also includes a clutch device, which is used to put the teeth of the driving member and the tooth grooves on the rigid display component in two states: engagement and separation.

11. The holographic fan according to claim 1, characterized in that: A plurality of intermediate boom sections are arranged between the fixed boom section and the final boom section.

12. A holographic fan according to claim 1 or 11, characterized in that: An inner groove is longitudinally formed on the outer side wall of each arm section of the telescopic rod. The inner groove is a straight line and is parallel to each other and on the same plane.

13. A holographic fan according to claim 12, characterized in that: The rigid display assembly is extended or shortened in the groove inside the outer side wall of each arm section.

14. The holographic fan according to claim 1, characterized in that: The sliding conductive unit includes a conductive contact piece and an elastic piece. The conductive contact piece is movably connected to the arm section of the rigid display component through the elastic piece, and is pressed against the conductive part of the arm section of the previous level rigid display component by the elastic piece. The conductive contact piece includes a brush, and the corresponding conductive part is connected to the brush.

15. A holographic fan according to claim 1 or 2, characterized in that: Each group of rigid display components extends or shortens synchronously towards each other.

16. A drone, characterized in that: The drone is equipped with a holographic fan as described in any one of claims 1, 2, 5, 6, 7, 8, 9, 10, 11, and 15.

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