Digital exhibition hall display device and method

Abstract

The application discloses a digital exhibition hall display device and method, which comprises a dome screen, the dome screen comprises an upper sphere, a lower sphere, a support part and a moving screen, the upper sphere is connected above the lower sphere through the support part, a moving channel is formed between two adjacent support parts, the moving screen is connected to a screw rod through a push-pull mechanism and moves along the moving channel, the bottom end of the screw rod is rotationally connected to the top of the lower sphere, the top end of the screw rod is connected to a first motor, and the first motor is located in the upper sphere; a support mechanism is used for supporting the dome screen and driving the dome screen to rotate; a base mechanism is used for fixing the support mechanism; a control panel is connected to the support mechanism and the base mechanism through a support; and a projector is electrically connected with the control panel and the moving screen. The application can not only realize external projection on the dome screen for display, but also realize single-screen display through the moving screen according to different needs, so that the flexibility of the display device in use is greatly improved, and the display form is more various.

Description

Technical Field

[0001] This invention relates to a digital exhibition hall display device and method. Background Technology

[0002] Digital exhibition halls, also known as digitized exhibition halls or multimedia digital exhibition halls, refer to exhibition halls that use multimedia and digital technologies as display technologies. They employ the latest film and animation technologies, combined with unique graphic digital and multimedia technologies, to attract visitors with various innovative technologies and achieve human-computer interaction. Digital exhibition halls are comprehensive display platforms that integrate various multimedia exhibition and display systems, including digital sand tables, panoramic / curved / spherical screen theaters, welcome floor screen systems, interactive bars, interactive mirrors and touch screens, etc.

[0003] Existing dome technologies include internal projection domes and external projection domes. Internal projection domes place the projector at the bottom of the dome, using a fisheye lens to reflect the signal and project it onto the spherical screen. Thanks to its special resin globe screen and high-lumen projector, it can create a seamless image display on the dome surface, supporting multi-window and multi-screen displays. It can stably and vividly project and display designed text, patterns, animations, and videos clearly, creating a stunning dynamic visual effect. External projection domes use four projectors to project onto the dome from four directions. Edge blending technology presents a seamless and realistic spherical image, ensuring no image distortion, clear picture quality, and vibrant colors.

[0004] However, existing external projection dome screens are a single structure that cannot be split into multiple screens to display individual content, making them inconvenient to use and offering a limited range of display options. Summary of the Invention

[0005] The purpose of this invention is to provide a technical solution for a digital exhibition hall display device and method that addresses the shortcomings of existing technologies. It can not only realize external projection on a dome screen for display, but also perform single-screen display through a moving screen according to different needs, which greatly improves the flexibility of the display device and makes the display forms richer and more diverse.

[0006] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0007] A digital exhibition hall display device, characterized in that: it includes

[0008] A dome screen includes an upper sphere, a lower sphere, support sections, and a movable screen. The upper sphere is connected to the upper part of the lower sphere via support sections arranged in a ring. A movable channel is formed between two adjacent support sections. The movable screen is connected to a screw via at least one push-pull mechanism and moves along the movable channel. The bottom end of the screw is rotatably connected to the top of the lower sphere, and the top end of the screw is connected to a first motor located inside the upper sphere.

[0009] A support mechanism is used to support the dome screen and drive its rotation;

[0010] A base mechanism is used to fix the support mechanism;

[0011] A control panel is connected to the support mechanism and the base mechanism via a bracket, and the bracket is equipped with a wiring port;

[0012] The projector is electrically connected to the control panel and the mobile screen.

[0013] The above structural design not only enables external projection onto the dome screen, but also allows for single-screen display via a mobile screen according to different needs, greatly improving the flexibility of the display device and making the display formats more diverse.

[0014] Furthermore, the push-pull mechanism includes a lifting block, an electric push rod, a U-shaped frame, a slider, and a fixed rod. The lifting block is provided with a threaded hole that matches the screw. A second connecting block is distributed on the outer side of the lifting block. The fixed end of the electric push rod is rotatably connected to the second connecting block, and the moving end of the electric push rod is rotatably connected to the first connecting block. The first connecting block is located on the U-shaped frame. The U-shaped frame is connected to the fixed rod through the slider, and the fixed rod is fixedly connected to the movable screen.

[0015] Furthermore, the inner wall of the support is provided with a guide groove, the slider matches the guide groove, and moves horizontally along the guide groove.

[0016] Furthermore, the mobile screen is equipped with a third motor, a projection screen, a display screen, an arc-shaped guide rail, a first guide wheel, and a second guide wheel. The display screen is located on the arc side close to the mobile screen. The two arc-shaped guide rails are distributed parallel to each other on both sides of the display screen. The first guide wheel and the second guide wheel are distributed along the top and bottom of the mobile screen. One end of the projection screen is connected to the other end by a pull rope that passes around the first guide wheel, the second guide wheel, and the arc-shaped guide rail. The first guide wheel is connected to the third motor through a second gear set.

[0017] Furthermore, projection screens are provided on the outer surfaces of the upper sphere, lower sphere, and support.

[0018] Furthermore, the support mechanism includes a box and a support column. The support column is fixed to the top of the box. The top surface of the support column is provided with an arc-shaped groove. Support wheels are distributed in a ring inside the arc-shaped groove. The bottom of the lower sphere is provided with an annular groove. The support wheels are limited to the annular groove to support the lower sphere. A second motor is provided inside the box. The second motor is connected to a rotating shaft through a first gear set. The rotating shaft passes through the arc-shaped groove and is connected to a coupling hole at the bottom of the lower sphere. A third ventilation grid is provided on the inner wall of the arc-shaped groove. A fourth ventilation grid is provided on the top surface of the box. The third ventilation grid is connected to the fourth ventilation grid.

[0019] Furthermore, the lower sphere is provided with an air collection groove, which is connected to a first ventilation grid through an air inlet channel. The first ventilation grid is located on the top surface of the lower sphere and is connected to a moving channel. The air collection groove is connected to a second ventilation grid through an air outlet channel. A fan is provided on the air outlet channel. The second ventilation grid is located at the bottom of the lower sphere near the third ventilation grid.

[0020] Furthermore, the base mechanism includes a lifting plate and a base plate. Cylinders are arranged in a ring on the top surface of the lifting plate. The cylinders are located inside a protective cover, which is fixed to the lifting plate and the support mechanism. On the top surface of the lifting plate, there is an air pump, a pressure regulating valve, and cylinders arranged in a ring. The pressure regulating valve is connected to the air pump and to each cylinder through an air supply pipe. The cylinders are connected to the base plate through a telescopic rod that passes through the lifting plate. The telescopic rod has an insertion hole, and the lifting plate has a horizontal limit hole. The insertion rod is inserted into the limit hole and the insertion hole by a fixed plug, thereby achieving a fixed connection between the telescopic rod and the lifting plate.

[0021] Furthermore, a handrail ring is connected to the top surface of the lifting platform via a reinforcing rod, and a caster wheel is provided on the bottom surface of the lifting platform. The bottom plate has through holes that match the caster wheel, and anti-slip pads are distributed in a ring on the bottom surface of the bottom plate.

[0022] The display method of the digital exhibition hall display device described above is characterized by including the following steps:

[0023] 1) Base mechanism assembly

[0024] a. First, make the corresponding lifting platform and base plate according to the design requirements, install casters along the bottom surface of the lifting platform, and determine the position of the through holes on the base plate according to the installation position of the casters, and drill the corresponding through holes.

[0025] b. Then install a protective pad in a ring shape on the bottom surface of the base plate;

[0026] c. Next, install cylinders on the top surface of the lifting plate and connect the cylinders to the top surface of the base plate via telescopic rods. At the same time, install an air pump and a pressure regulating valve on the top surface of the lifting plate. The pressure regulating valve is connected to each cylinder through an air supply pipe, and a protective cover is installed on the outside of the cylinder.

[0027] d. Finally, install reinforcing rods at an angle along the top surface of the lifting plate, install handrail rings along the ends of the reinforcing rods, and open limiting holes along the outer circumference of the lifting plate.

[0028] 2) Installation of support mechanisms and brackets

[0029] a. First, make the corresponding bracket according to the design requirements, fix the bracket on the lifting plate and protective cover, and install the control panel along the end of the bracket;

[0030] b. Then, according to the design requirements, make the corresponding box and support column, install the fourth ventilation grid along the top surface of the box, open the arc groove along the top of the support column, and install the support wheel in the arc groove. The support wheel is distributed in a ring. At the same time, install the third ventilation grid on the arc groove.

[0031] c. Fix the support column to the top of the box, so that the third ventilation grid and the fourth ventilation grid are connected. Install the second motor and the rotating shaft along the inside of the box. The second motor is connected to the rotating shaft through the first gear set. The top of the rotating shaft passes through the arc groove, and the top surface of the rotating shaft is lower than the top surface of the support column.

[0032] 3) Dome screen installation

[0033] a. First, according to the design requirements, the corresponding upper sphere, lower sphere and support parts are made. The projection screen is installed on the outer surface of the upper sphere, lower sphere and support parts. The four support parts are installed in a ring on the top surface of the lower sphere. Each support part has a guide groove that is parallel to each other on its inner side. There is a groove moving channel between two adjacent support parts.

[0034] b. Then, install an air collection groove and a fan inside the lower sphere. The air collection groove is connected to the first ventilation grid and the second ventilation grid through the air inlet channel and the air outlet channel, respectively. The fan is located on the air outlet channel. An annular groove and a connecting hole are opened along the bottom surface of the lower sphere.

[0035] c. Next, install a screw on the top surface of the lower sphere and install a push-pull mechanism on the screw. At the same time, make a moving screen according to the size of the moving channel, connect the moving screen to the push-pull mechanism, and install the first motor along the top of the screw.

[0036] d. Finally, install the upper sphere on the top surface of the support, so that the first motor is located inside the upper sphere, and place the installed spherical screen on the support mechanism, so that the top of the rotating shaft is fixed in the connecting hole of the lower sphere, and the support wheel is embedded in the annular groove.

[0037] 4) Projector installation

[0038] Turn on the power and start the pressure regulating valve through the control panel to raise the lifting plate until the casters are off the top surface of the base plate. At this time, the insertion hole on the telescopic rod is connected to the upper limit hole of the lifting plate. Insert the fixing plug into the limit hole and the insertion hole to fix the lifting plate. Then install the four projectors in a ring around the perimeter of the dome screen and connect the projectors to the control panel electrically.

[0039] 5) Dome screen and single-screen display

[0040] a. First, project the desired image onto the dome screen using the projector via the control panel, and then start the second motor to drive the dome screen to rotate at a constant speed.

[0041] b. When performing a single-screen display, disconnect the projector, the second motor stops working, and the first motor starts. The screw drives the push-pull mechanism to unfold, so that the moving screens in all directions are pushed outward to the required position simultaneously.

[0042] c. Next, start the third motor inside the moving screen. The second guide wheel and the first guide wheel will pull the projection screen back into the moving screen via the pull rope, and the display screen will be turned on.

[0043] This display method is simple to follow, can be moved flexibly within the exhibition hall, and is stable and reliable when fixed in place. It can also be used to display the entire dome screen or a single screen, depending on the actual display needs.

[0044] The present invention, by adopting the above-described technical solution, has the following beneficial effects:

[0045] 1. This invention can not only realize external projection on the dome screen, but also realize single-screen display through a moving screen according to different needs, which greatly improves the flexibility of the display device and makes the display forms more diverse.

[0046] 2. The screw is rotated by the first motor, which in turn causes the lifting block to move up and down along the screw. The U-shaped frame is moved telescopically by the electric push rod. The U-shaped frame moves the moving screen telescopically by the fixed rod to adjust the horizontal position. In order to prevent the lifting block from rotating during the movement, guide rods are symmetrically installed on both sides of the screw. The guide rods are located between the upper ball and the lower ball and pass through the lifting block to improve the stability and reliability of the lifting block during the up and down movement.

[0047] 3. The third motor drives the second guide wheel to rotate via the second gear set, which in turn drives the pull rope to move, allowing the projection screen to unfold to the arc side of the moving screen as needed, or to retract into the moving screen when using the display screen, to meet different display requirements. The pull rope can move along the first guide wheel, the second guide wheel and the arc-shaped guide rail to prevent the projection screen from wrinkling during movement, which would affect the projection effect.

[0048] 4. This display method is simple to follow. It can be moved flexibly within the exhibition hall and is stable and reliable when fixed in place. In addition, it can be displayed as a whole dome screen or a single screen according to the actual display needs. Attached image description:

[0049] The present invention will be further described below with reference to the accompanying drawings:

[0050] Figure 1 This is a rendering of the display device in the digital exhibition hall display apparatus and method of the present invention;

[0051] Figure 2 This is a schematic diagram of the display device after the projector is removed in this invention;

[0052] Figure 3 This is a diagram showing the effect of the mobile screen being closed in this invention;

[0053] Figure 4 This is a diagram showing the effect of the mobile screen after it has been unfolded in this invention;

[0054] Figure 5 This is a schematic diagram showing the connection between the screw, push-pull mechanism, and support in this invention;

[0055] Figure 6 This is a rendering of the support mechanism in this invention;

[0056] Figure 7 This is a schematic diagram of the internal structure of the support mechanism in this invention;

[0057] Figure 8 This is a schematic diagram of the internal structure of the lower sphere in this invention;

[0058] Figure 9 This is a rendering of the base mechanism in this invention;

[0059] Figure 10 This is a schematic diagram of the connection between the telescopic rod and the insertion rod in this invention;

[0060] Figure 11 This is a schematic diagram of the internal structure of the mobile screen in this invention.

[0061] In the diagram: 1-Upper sphere; 2-Lower sphere; 3-Box; 4-Support column; 5-Base mechanism; 6-Bracket; 7-Control panel; 8-Handrail ring; 9-Reinforcing rod; 10-Protective cover; 11-Connection port; 12-Support part; 13-Moving screen; 14-Lifting plate; 15-Base plate; 16-Telescopic rod; 17-Universal wheel; 18-Through hole; 19-Anti-slip pad; 20-Moving channel; 21-Screw; 22-Push-pull mechanism; 23-Guide groove; 24-First motor; 25-U-shaped frame; 26-Slider; 27-Fixing rod; 28-Lifting block; 29-Electric push rod; 30-First connecting block; 31-Second connecting block; 32-First through hole 33-Air grid; 34-Arc groove; 35-Support wheel; 36-Third ventilation grid; 37-Rotating shaft; 38-Fourth ventilation grid; 39-Second motor; 40-First gear set; 41-Air collection groove; 42-Second ventilation grid; 43-Air outlet channel; 44-Fan; 45-Annular groove; 46-Coupling hole; 47-Air pump; 48-Pressure regulating valve; 49-Cylinder; 50-Fixing plug; 51-Insertion rod; 52-Insertion hole; 53-Limiting hole; 54-Display screen; 55-Arc guide rail; 56-Pull rope; 57-Projection screen; 58-First guide wheel; 59-Second guide wheel; 60-Projector; 61-Third motor. Detailed Implementation

[0062] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0063] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of the present invention.

[0064] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this invention are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion.

[0065] like Figures 1 to 11 As shown, this invention provides a digital exhibition hall display device, which includes a dome screen, a support mechanism, a base mechanism 5, a control panel 7, and a projector 60.

[0066] The dome screen includes an upper sphere 1, a lower sphere 2, support sections 12, and movable screens 13. The upper sphere 1 is connected above the lower sphere 2 via ring-shaped support sections 12, forming a moving channel 20 between adjacent support sections 12. The movable screens 13 are connected to a screw 21 via at least one push-pull mechanism 22 and move along the moving channel 20. The bottom end of the screw 21 is rotatably connected to the top of the lower sphere 2, and the top end of the screw 21 is connected to a first motor 24, which is located inside the upper sphere 1. This application preferentially uses two push-pull mechanisms 22 to improve the stability and reliability of the movable screens 13 during movement. A battery pack and a wireless communication module can be installed inside the upper sphere 1 for electrically connecting the display screens 54, the first motor 24, and the third motor 61 within each movable screen 13. The wireless communication module enables the control panel 7 to control the display screens 54, the first motor 24, and the third motor 61.

[0067] The push-pull mechanism 22 includes a lifting block 28, an electric push rod 29, a U-shaped frame 25, a slider 26, and a fixed rod 27. The lifting block 28 has a threaded hole that matches the screw 21. A second connecting block 31 is distributed on the outer surface of the lifting block 28. The fixed end of the electric push rod 29 is rotatably connected to the second connecting block 31, and the moving end of the electric push rod 29 is rotatably connected to the first connecting block 30. The first connecting block 30 is located on the U-shaped frame 25. The U-shaped frame 25 is connected to the fixed rod 27 via the slider 26. The fixed rod 27 is fixedly connected to the movable screen. 13; The first motor 24 drives the screw 21 to rotate, thereby causing the lifting block 28 to move up and down along the screw 21. The electric push rod 29 drives the U-shaped frame 25 to extend and retract. The U-shaped frame 25 drives the moving screen 13 to extend and retract via the fixed rod 27 to adjust the horizontal position. To prevent the lifting block 28 from rotating during movement, guide rods are symmetrically installed on both sides of the screw 21. The guide rods are located between the upper ball 1 and the lower ball 2 and pass through the lifting block 28, improving the stability and reliability of the lifting block 28 during up and down movement. The inner wall of the support part 12 is provided with a guide groove 23. The slider 26 matches the guide groove 23 and moves horizontally along the guide groove 23. The design of the slider 26 and the guide groove 23 can improve the stability and reliability of the moving screen 13 during horizontal movement.

[0068] The movable screen 13 includes a third motor 61, a projection screen 57, a display screen 54, an arc-shaped guide rail 55, a first guide wheel 58, and a second guide wheel 59. The display screen 54 is located on the arc side near the movable screen 13. The two arc-shaped guide rails 55 are distributed parallel to each other on both sides of the display screen 54. The first guide wheel 58 and the second guide wheel 59 are distributed along the top and bottom of the movable screen 13. One end of the projection screen 57 is connected to the other end by a pull rope 56 that passes around the first guide wheel 58, the second guide wheel 59, and the arc-shaped guide rail 55. The first guide wheel 58 is connected by a pull rope 56 that passes around the first guide wheel 58, the second guide wheel 59, and the arc-shaped guide rail 55. The third motor 61 is connected to the second gear set; the third motor 61 drives the second guide wheel 59 to rotate through the second gear set, which in turn drives the pull rope 56 to move, so that the projection screen 57 can be unfolded to the arc side of the moving screen 13 as needed, or the projection screen 57 can be retracted into the moving screen 13 when the display screen 54 is used, to meet different display requirements. The pull rope 56 can move along the first guide wheel 58, the second guide wheel 59 and the arc-shaped guide rail 55 to prevent the projection screen 57 from wrinkling during the movement, which would affect the projection effect.

[0069] The upper sphere 1, the lower sphere 2, and the outer surface of the support 12 are all provided with projection screens 57; so that when the movable screen 13 is folded up, the projection screens 57 on the movable screen 13 match the entire spherical screen, improving the display effect. The projection screens 57 can be made of elastic materials.

[0070] The lower sphere 2 is provided with an air collection groove 40. The air collection groove 40 is connected to a first ventilation grid 32 through an air inlet channel 42. The first ventilation grid 32 is located on the top surface of the lower sphere 2 and is connected to the moving channel 20. The air collection groove 40 is connected to a second ventilation grid 41 through an air outlet channel 43. A fan 44 is provided on the air outlet channel 43. The second ventilation grid 41 is located at the bottom of the lower sphere 2 near the third ventilation grid 35. After the moving screen 13 is unfolded, the fan 44 is started, which can realize the connection between the first ventilation grid 32, the air collection groove 40 and the second ventilation grid 41, which facilitates heat dissipation. The heat discharged from the second ventilation grid can be discharged through the gap between the lower sphere 2 and the arc-shaped groove 33, or through the third ventilation grid 35 and the fourth ventilation grid 37.

[0071] The support mechanism supports the dome screen and drives its rotation. The support mechanism includes a housing 3 and support columns 4. The support columns 4 are fixed to the top of the housing 3. An arc-shaped groove 33 is provided on the top surface of the support column 4, and support wheels 34 are arranged in a ring within the arc-shaped groove 33. An annular groove 45 is provided at the bottom of the lower dome 2, and the support wheels 34 are confined within the annular groove 45 to support the lower dome 2. A second motor 38 is provided inside the housing 3. The second motor 38 is connected to a rotating shaft 36 via a first gear set 39. The rotating shaft 36 passes through the arc-shaped groove 33 and connects to a connecting shaft at the bottom of the lower dome 2. Inside the hole 46, a third ventilation mesh 35 is provided on the inner wall of the arc-shaped groove 33, and a fourth ventilation mesh 37 is provided on the top surface of the box 3. The third ventilation mesh 35 is connected to the fourth ventilation mesh 37. The second motor 38 can drive the rotating shaft 36 to rotate through the first gear set 39, which in turn can drive the dome screen to rotate to meet the display requirements. The support wheel 34 can support the dome screen and improve the stability and reliability of the dome screen during rotation. The third ventilation mesh 35 and the fourth ventilation mesh 37 facilitate air circulation inside the support mechanism and play a heat dissipation role.

[0072] The base mechanism 5 is used to fix the support mechanism; the base mechanism 5 includes a lifting plate 14 and a base plate 15. Cylinders 49 are arranged in a ring on the top surface of the lifting plate 14. The cylinders 49 are located inside the protective cover 10, which is fixed to the lifting plate 14 and the support mechanism. An air pump 47, a pressure regulating valve 48, and the ring-arranged cylinders 49 are located on the top surface of the lifting plate 14. The pressure regulating valve 48 is connected to the air pump 47 and to each cylinder 49 via an air supply pipe. The cylinders 49 are connected to the base plate 15 via a telescopic rod 16 that passes through the lifting plate 14. The telescopic rod 16 is provided with an insertion hole 52, and the lifting plate 14 is provided with a horizontal limiting hole 53. The fixing plug 50 drives the insertion rod 51 to be inserted into the limiting hole 53 and the insertion hole 52, so as to realize the fixed connection between the telescopic rod 16 and the lifting plate 14. The protective cover 10 can protect the cylinder 49, the air pump 47 and the pressure regulating valve 48. The air pump 47 delivers gas to the cylinder 49 through the pressure regulating valve 48, which can drive the telescopic rod 16 to move. When the telescopic rod 16 extends to the insertion hole 52 and the limiting hole 53, the insertion rod 51 can be inserted to achieve fixation and improve stability. A handrail ring 8 is connected to the top surface of the lifting plate 14 via a reinforcing rod 9. A universal wheel 17 is provided on the bottom surface of the lifting plate 14. A through hole 18 matching the universal wheel 17 is provided on the bottom plate 15. Anti-slip pads 19 are distributed in a ring on the bottom surface of the bottom plate 15. The handrail ring 8 not only provides protection but also allows for pushing and pulling. When the entire device needs to be moved, the bottom plate 15 can be brought close to the lifting plate 14 via the telescopic rod 16 until the universal wheel 17 extends out of the through hole 18, thus enabling the entire device to move. When the entire device needs to be fixed, the telescopic rod 16 can be extended to disengage the universal wheel 17 from the bottom plate 15. The anti-slip pads 19 can improve the stability of the entire device when it is placed.

[0073] The control panel 7 is connected to the support mechanism and the base mechanism 5 via a bracket 6. The bracket 6 has a wiring port 11, and four projectors 60 arranged in a ring are electrically connected to the control panel 7 and the movable screen 13. This structural design not only enables external projection onto the dome screen but also allows for single-screen display via the movable screen 13 according to different needs, greatly improving the flexibility of the display device and making the display formats more diverse.

[0074] The display method of the digital exhibition hall display device described above includes the following steps:

[0075] 1) Base mechanism 5 assembly

[0076] a. First, make the corresponding lifting plate 14 and base plate 15 according to the design requirements. Install casters 17 along the bottom surface of the lifting plate 14, and determine the position of the through hole 18 on the base plate 15 according to the installation position of the casters 17. Drill the corresponding through hole 18.

[0077] b. Then install a protective pad in a ring shape on the bottom surface of the base plate 15;

[0078] c. Next, cylinder 49 is installed on the top surface of the lifting plate 14, and cylinder 49 is connected to the top surface of the base plate 15 through telescopic rod 16. At the same time, air pump 47 and pressure regulating valve 48 are installed on the top surface of the lifting plate 14. Pressure regulating valve 48 is connected to each cylinder 49 through air supply pipe, and protective cover 10 is installed on the outside of cylinder 49.

[0079] d. Finally, the reinforcing rod 9 is installed at an angle along the top surface of the lifting plate 14, and the handrail ring 8 is installed along the end of the reinforcing rod 9. At the same time, the limiting hole 53 is opened along the outer circumference side of the lifting plate 14.

[0080] 2) Installation of support mechanism and bracket 6

[0081] a. First, make the corresponding bracket 6 according to the design requirements, fix the bracket 6 on the lifting plate 14 and the protective cover 10, and install the control panel 7 along the end of the bracket 6.

[0082] b. Then, according to the design requirements, the corresponding box body 3 and support column 4 are made. The fourth ventilation grid 37 is installed along the top surface of the box body 3. An arc groove 33 is opened along the top of the support column 4, and support wheels 34 are installed in the arc groove 33. The support wheels 34 are distributed in a ring. At the same time, the third ventilation grid 35 is installed on the arc groove 33.

[0083] c. Fix the support column 4 to the top of the box 3 so that the third ventilation grid 35 and the fourth ventilation grid 37 are connected. Install the second motor 38 and the rotating shaft 36 along the inside of the box 3. The second motor 38 is connected to the rotating shaft 36 through the first gear set 39. The top of the rotating shaft 36 passes through the arc groove 33, and the top surface of the rotating shaft 36 is lower than the top surface of the support column 4.

[0084] 3) Dome screen installation

[0085] a. First, according to the design requirements, the corresponding upper sphere 1, lower sphere 2 and support part 12 are made. The projection screen 57 is installed on the outer surface of the upper sphere 1, lower sphere 2 and support part 12. The four support parts 12 are installed in a ring on the top surface of the lower sphere 2. Each support part 12 has a guide groove 23 that is parallel to each other on its inner side. There is a groove moving channel 20 between two adjacent support parts 12.

[0086] b. Then, an air collection groove 40 and a fan 44 are installed inside the lower sphere 2. The air collection groove 40 is connected to the first ventilation grid 32 and the second ventilation grid 41 through the air inlet channel 42 and the air outlet channel 43 respectively. The fan 44 is located on the air outlet channel 43, and an annular groove 45 and a connecting hole 46 are opened along the bottom surface of the lower sphere 2.

[0087] c. Next, install screw 21 on the top surface of the lower sphere 2, and install push-pull mechanism 22 on screw 21. At the same time, make moving screen 13 according to the size of moving channel 20, connect moving screen 13 to push-pull mechanism 22, and install first motor 24 along the top of screw 21.

[0088] d. Finally, the upper sphere 1 is installed on the top surface of the support part 12, so that the first motor 24 is located inside the upper sphere 1, and the installed spherical screen is placed on the support mechanism, so that the top end of the rotating shaft 36 is fixed in the connecting hole 46 of the lower sphere 2, and the support wheel 34 is embedded in the annular groove 45.

[0089] 4) Projector 60 installation

[0090] Turn on the power and start the pressure regulating valve 48 through the control panel 7 to raise the lifting plate 14 until the caster wheel 17 is separated from the top surface of the base plate 15. At this time, the insertion hole 52 on the telescopic rod 16 is connected to the upper limit hole 53 of the lifting plate 14. The fixing plug 50 drives the insertion rod 51 to be inserted into the limit hole 53 and the insertion hole 52 to fix the lifting plate 14. Then, install the four projectors 60 in a ring around the perimeter of the dome screen and electrically connect the projectors 60 to the control panel 7.

[0091] 5) Dome screen and single-screen display

[0092] a. First, project the desired image onto the dome screen using the control panel 7 via the projector 60, and then start the second motor 38 to drive the dome screen to rotate at a constant speed.

[0093] b. When performing a single-screen display, disconnect the projector 60, the second motor 38 stops working, and the first motor 24 is started. The screw 21 drives the push-pull mechanism 22 to unfold, so that the moving screens 13 in all directions are pushed outward to the required position simultaneously.

[0094] c. Next, start the third motor 61 inside the moving screen 13. The second guide wheel 59 and the first guide wheel 58 will drive the projection screen 57 back into the moving screen 13 via the pull rope 56, and the display screen 54 will be turned on.

[0095] This display method is simple to follow, can be moved flexibly within the exhibition hall, and is stable and reliable when fixed in place. It can also be used to display the entire dome screen or a single screen, depending on the actual display needs.

[0096] The above are merely specific embodiments of the present invention, but the technical features of the present invention are not limited thereto. Any simple changes, equivalent substitutions, or modifications made based on the present invention to achieve substantially the same technical effect are all covered within the protection scope of the present invention.

Claims

1. A digital exhibition hall display device, characterized in that: include A dome screen includes an upper sphere, a lower sphere, support sections, and a movable screen. The upper sphere is connected to the upper part of the lower sphere via the support sections arranged in a ring. A moving channel is formed between two adjacent support sections. The movable screen is connected to a screw via at least one push-pull mechanism and moves along the moving channel. The bottom end of the screw is rotatably connected to the top of the lower sphere, and the top end of the screw is connected to a first motor located inside the upper sphere. A support mechanism is provided for supporting the dome screen and driving the dome screen to rotate. A base mechanism for fixing the support mechanism; A control panel is connected to the support mechanism and the base mechanism via a bracket, and the bracket is provided with a wiring port; and a projector, wherein the projector is electrically connected to the control panel and the mobile screen; The mobile screen includes a third motor, a projection screen, a display screen, an arc-shaped guide rail, a first guide wheel, and a second guide wheel. The display screen is located on the arc side near the mobile screen. The two arc-shaped guide rails are distributed parallel to each other on both sides of the display screen. The first guide wheel and the second guide wheel are distributed along the top and bottom of the mobile screen. One end of the projection screen is connected to the other end by a pull rope that passes over the first guide wheel, the second guide wheel, and the arc-shaped guide rail. The first guide wheel is connected to the third motor through a second gear set. The projection screen is provided on the outer surfaces of the upper sphere, the lower sphere, and the support. The third motor drives the second guide wheel to rotate via the second gear set, which in turn moves the pull rope, causing the projection screen to unfold to the arc side of the mobile screen, or to retract into the mobile screen when the display screen is in use.

2. The digital exhibition hall display device according to claim 1, characterized in that: The push-pull mechanism includes a lifting block, an electric push rod, a U-shaped frame, a slider, and a fixed rod. The lifting block has a threaded hole that matches the screw. A second connecting block is distributed on the outer side of the lifting block. The fixed end of the electric push rod is rotatably connected to the second connecting block, and the moving end of the electric push rod is rotatably connected to the first connecting block. The first connecting block is located on the U-shaped frame. The U-shaped frame is connected to the fixed rod through the slider, and the fixed rod is fixedly connected to the mobile screen.

3. The digital exhibition hall display device according to claim 2, characterized in that: The inner wall of the support is provided with a guide groove, the slider matches the guide groove and moves horizontally along the guide groove.

4. The digital exhibition hall display device according to claim 3, characterized in that: The support mechanism includes a housing and a support column. The support column is fixed to the top of the housing. The top surface of the support column is provided with an arc-shaped groove. Support wheels are distributed in a ring within the arc-shaped groove. The bottom of the lower sphere is provided with an annular groove. The support wheels are located within the annular groove to support the lower sphere. A second motor is provided inside the housing. The second motor is connected to a rotating shaft through a first gear set. The rotating shaft passes through the arc-shaped groove and connects to a connecting hole at the bottom of the lower sphere. A third ventilation mesh is provided on the inner wall of the arc-shaped groove. A fourth ventilation mesh is provided on the top surface of the housing. The third ventilation mesh is connected to the fourth ventilation mesh.

5. A digital exhibition hall display device according to claim 4, characterized in that: The lower sphere is provided with an air collection groove, which is connected to a first ventilation grid through an air inlet channel. The first ventilation grid is located on the top surface of the lower sphere and is connected to the moving channel. The air collection groove is connected to a second ventilation grid through an air outlet channel. A fan is provided on the air outlet channel. The second ventilation grid is located at the bottom of the lower sphere near the third ventilation grid.

6. A digital exhibition hall display device according to claim 5, characterized in that: The base mechanism includes a lifting plate and a base plate. Cylinders are arranged in a ring on the top surface of the lifting plate. The cylinders are located inside a protective cover, which is fixed to the lifting plate and the support mechanism. An air pump, a pressure regulating valve, and the ring-arranged cylinders are located on the top surface of the lifting plate. The pressure regulating valve is connected to the air pump and is connected to each cylinder through an air supply pipe. The cylinders are connected to the base plate through a telescopic rod that passes through the lifting plate. The telescopic rod has an insertion hole, and the lifting plate has a horizontal limiting hole. A fixing plug drives the insertion rod to insert into the limiting hole and the insertion hole, thereby achieving a fixed connection between the telescopic rod and the lifting plate.

7. A digital exhibition hall display device according to claim 6, characterized in that: The top surface of the lifting plate is connected to a handrail ring by a reinforcing rod, the bottom surface of the lifting plate is provided with casters, the bottom plate is provided with through holes that match the casters, and the bottom surface of the bottom plate is provided with anti-slip pads in a ring.

8. The display method of a digital exhibition hall display device as described in claim 7, characterized in that... Includes the following steps: 1) Base mechanism assembly a. First, make the corresponding lifting platform and base plate according to the design requirements, install casters along the bottom surface of the lifting platform, and determine the position of the through holes on the base plate according to the installation position of the casters, and drill the corresponding through holes. b. Then install a protective pad in a ring shape on the bottom surface of the base plate; c. Next, install cylinders on the top surface of the lifting plate and connect the cylinders to the top surface of the base plate via telescopic rods. At the same time, install an air pump and a pressure regulating valve on the top surface of the lifting plate. The pressure regulating valve is connected to each cylinder through an air supply pipe, and a protective cover is installed on the outside of the cylinder. d. Finally, install reinforcing rods at an angle along the top surface of the lifting plate, install handrail rings along the ends of the reinforcing rods, and open limiting holes along the outer circumference of the lifting plate. 2) Installation of support mechanisms and brackets a. First, make the corresponding bracket according to the design requirements, fix the bracket on the lifting plate and protective cover, and install the control panel along the end of the bracket; b. Then, according to the design requirements, make the corresponding box and support column, install the fourth ventilation grid along the top surface of the box, open the arc groove along the top of the support column, and install the support wheel in the arc groove. The support wheel is distributed in a ring. At the same time, install the third ventilation grid on the arc groove. c. Fix the support column to the top of the box, so that the third ventilation grid and the fourth ventilation grid are connected. Install the second motor and the rotating shaft along the inside of the box. The second motor is connected to the rotating shaft through the first gear set. The top of the rotating shaft passes through the arc groove, and the top surface of the rotating shaft is lower than the top surface of the support column. 3) Dome screen installation a. First, according to the design requirements, the corresponding upper sphere, lower sphere and support parts are made. The projection screen is installed on the outer surface of the upper sphere, lower sphere and support parts. The four support parts are installed in a ring on the top surface of the lower sphere. Each support part has a guide groove that is parallel to each other on its inner side. A moving channel is formed between two adjacent support parts. b. Then, install an air collection groove and a fan inside the lower sphere. The air collection groove is connected to the first ventilation grid and the second ventilation grid through the air inlet channel and the air outlet channel, respectively. The fan is located on the air outlet channel. An annular groove and a connecting hole are opened along the bottom surface of the lower sphere. c. Next, install a screw on the top surface of the lower sphere and install a push-pull mechanism on the screw. At the same time, make a moving screen according to the size of the moving channel, connect the moving screen to the push-pull mechanism, and install the first motor along the top of the screw. d. Finally, install the upper sphere on the top surface of the support, so that the first motor is located inside the upper sphere, and place the installed spherical screen on the support mechanism, so that the top of the rotating shaft is fixed in the connecting hole of the lower sphere, and the support wheel is embedded in the annular groove. 4) Projector installation Turn on the power and start the pressure regulating valve through the control panel to raise the lifting plate until the casters are off the top surface of the base plate. At this time, the insertion hole on the telescopic rod is connected to the upper limit hole of the lifting plate. Insert the fixing plug into the limit hole and the insertion hole to fix the lifting plate. Then install the four projectors in a ring around the perimeter of the dome screen and connect the projectors to the control panel electrically. 5) Dome screen and single-screen display a. First, project the desired image onto the dome screen using the projector via the control panel, and then start the second motor to drive the dome screen to rotate at a constant speed. b. When performing a single-screen display, disconnect the projector, the second motor stops working, and the first motor starts. The screw drives the push-pull mechanism to unfold, so that the moving screens in all directions are pushed outward to the required position simultaneously. c. Next, start the third motor inside the moving screen. The second guide wheel and the first guide wheel will pull the projection screen back into the moving screen via the pull rope, and the display screen will be turned on.

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