An embedded anti-trampling 3D holographic projector

Abstract

The present invention discloses an embedded anti-trampling 3D holographic projector. The 3D holographic projection and the embedded protective cover are simultaneously installed in a fitted manner under a display platform. At the corresponding middle position inside the embedded protective cover, an electronic projection device is provided. At the middle position on the upper surface of the electronic projection device, a projection display cover is installed. It includes: drive motors symmetrically installed on the left and right sides inside the embedded protective cover; a lateral direction control sliding frame fixedly installed on the upper surface of the side fixing plate, and a transmission sliding plate sleeved and installed on the outer side of the lateral direction control sliding frame; isolation piles penetrating and connected to the upper surface of the embedded protective cover. This embedded anti-trampling 3D holographic projector adopts a novel structural design, enabling the device to control the electronic projection device to be embedded and protected in the display plane, and an anti-trampling warning structure is provided outside the device, which can improve the overall safety protection performance of the device application.

Description

Technical Field

[0001] The present invention relates to the technical field of 3D holographic projection, and particularly to an embedded anti-trampling 3D holographic projector. Background Technique

[0002] 3D holographic projection is a new type of electronic projection device. Through the projection of light waves, three-dimensional stereoscopic images can be directly observed, with good imaging effects and a strong sense of technology display. There are relevant displays in many modern science and technology exhibition halls. A 3D holographic projection all-in-one machine with the application number CN201720555511.9, through the setting of the lighting structure, is conducive to more conveniently seeing the surrounding environment, and at the same time increases the functions of the 3D holographic projection all-in-one machine. Through the setting of the base structure, it is conducive to more conveniently displaying or using the 3D holographic projection all-in-one machine, and at the same time increases the stability of the 3D holographic projection all-in-one machine. However, since the overall projection device is in a flat placement application state, there are still certain problems during long-term use:

[0003] 1. Some existing 3D holographic projectors are displayed and set on the ground. When not in use, there is no protective structure outside the 3D holographic projector, and its surface is easily damaged, etc., and the device cannot be well protected;

[0004] 2. Some 3D holographic projectors are embedded in the display plane for better protection. However, inside the exhibition hall, there are many people, and it is easy to trample on the upper protective structure of the stored projector, which is not conducive to safe and protective use.

[0005] Therefore, it is necessary to design an embedded anti-trampling 3D holographic projector for the above problems. Summary of the Invention

[0006] The purpose of the present invention is to provide an embedded anti-trampling 3D holographic projector to solve the problems mentioned in the above background technique that some existing 3D holographic projectors are displayed and set on the ground. When not in use, there is no protective structure outside the 3D holographic projector, and its surface is easily damaged, etc., and the device cannot be well protected. Some 3D holographic projectors are embedded in the display plane for better protection. However, inside the exhibition hall, there are many people, and it is easy to trample on the upper protective structure of the stored projector, which is not conducive to safe and protective use.

[0007] To achieve the above purpose, the present invention provides the following technical solution: An embedded anti-trampling 3D holographic projector, where the 3D holographic projection and the embedded protective cover are simultaneously embedded and installed under the display platform. An electronic projection device is correspondingly arranged at the middle position inside the embedded protective cover, and a projection display cover is installed at the middle position on the upper surface of the electronic projection device;

[0008] An embedded anti-stampede 3D holographic projector, comprising:

[0009] Driving motors, symmetrically installed on the left and right sides inside the embedded protective cover, and the upper output ends of the driving motors are connected to driving threaded rods. The upper ends of the driving threaded rods are rotatably connected below the side fixing plates, and the side fixing plates are fixedly arranged on the inner side walls of the embedded protective cover. A threaded transmission block is sleeved outside the driving threaded rods, and the threaded transmission blocks are symmetrically and fixedly installed on the outer sides of the electronic projection device. In addition, a support protection pad is fixedly installed on the lower surface of the electronic projection device;

[0010] A lateral direction control sliding frame, fixedly installed on the upper surface of the side fixing plate. A transmission sliding plate is sleeved outside the side of the lateral direction control sliding frame, and a positioning rod penetrates through the inside of the transmission sliding plate. Bottom substrates are fixed on the lower surfaces of the positioning rods on the left and right sides, and sealing covers are fixedly installed on the upper surfaces of the positioning rods on the left and right sides. At the same time, a positioning spring is sleeved outside the positioning rod;

[0011] Isolation piles, penetrating through the upper surface of the embedded protective cover. The lower ends of the isolation piles are fixedly installed with a comprehensive frame, and the lower end of the comprehensive frame is connected through the inside of the side fixing plate. At the same time, a return spring is sleeved outside the lower part of the comprehensive frame.

[0012] Preferably, the electronic projection device and the threaded transmission blocks on the left and right sides are fixed into an integrated driving structure, and the threaded transmission blocks and the driving threaded rods form a threaded transmission structure. The driving motor is operated to control the rotation of the driving threaded rods. Under the action of the threaded transmission structure, the threaded transmission blocks are controlled to move up and down, and it can control the synchronous up and down movement of the electronic projection device.

[0013] Preferably, the outer side surfaces of the threaded transmission blocks are connected to the bottoms of the comprehensive frames through micro-elastic ropes, and the micro-elastic ropes are wound around the outside of the rotating cylinders. The rotating cylinders are rotatably installed on the inner side walls of the embedded protective cover. When the threaded transmission blocks move up and down for adjustment, the micro-elastic ropes are controlled to elastically stretch, and the micro-elastic ropes can control the corresponding up and down sliding movement of the comprehensive frames and the isolation piles, so that the corresponding positions of the isolation piles can be adjusted.

[0014] Preferably, two sealing covers are symmetrically distributed on the top surface of the embedded protective cover in an embedded manner, and the sealing covers on the left and right sides are completely embedded and shield the opening positions on the top surface of the embedded protective cover. The lower ends of the sealing covers and the transmission sliding plates form an elastic lifting structure through the positioning rods and the positioning springs, and the transmission sliding plates and the lateral direction control sliding frames form a lateral sliding structure. Under the action of the transmission structure, the transmission sliding plates are controlled to slide horizontally, and it can control the synchronous up and down movement adjustment of the upper sealing covers.

[0015] Preferably, the isolation piles are evenly distributed in a square structure on the integrated rack, and a limit frame is fixedly installed at the lower end of the integrated rack. A rack is fixedly installed inside the limit frame. The isolation pile and the top surface of the embedded protective cover form a vertical sliding structure. By controlling the isolation pile to penetrate the top surface of the embedded protective cover, it can protect the position on the side of the embedded protective cover, preventing pedestrians passing by from stepping on it and providing good protection for the projection device.

[0016] Preferably, a half gear and a longitudinal direction control sliding frame are further arranged inside the embedded protective cover:

[0017] The half gear is rotatably installed on the inner side wall of the embedded protective cover. A convex rod is fixedly installed on the side surface of the half gear, and a fitting slider is connected to the side surface of the convex rod.

[0018] The longitudinal direction control sliding frame is fixedly installed on the bottom surface of the embedded protective cover. A sliding frame is sleeved outside the longitudinal direction control sliding frame. A cross plate is fixed to the outside of the sliding frame, and inner embedding grooves are symmetrically formed in the two sides of the cross plate.

[0019] Preferably, the side surface of the half gear is meshed and connected with the rack. There are 2 groups of the half gear and the rack symmetrically arranged on the left and right with respect to the axis of the limit frame. When the integrated rack moves up and down, it drives the limit frame and the rack to move up and down synchronously. The rack is meshed and arranged at the side position of the half gear. When it moves up and down, it can control the corresponding rotation of the half gear.

[0020] Preferably, the side surface of the convex rod forms a sliding structure with the cross plate through the fitting slider and the inner embedding groove. The fitting slider penetrates through the inside of the inner embedding groove. The cross plate forms a vertical sliding structure with the longitudinal direction control sliding frame through the sliding frame. When the half gear rotates, the convex rod fixedly installed on the side surface rotates synchronously. The convex rod pushes the fitting slider to slide through the inside of the inner embedding groove. Under the sliding action of the fitting slider, the cross plate can be controlled to slide up and down correspondingly.

[0021] Preferably, a lower connecting piece is fixed at the middle position of the side surface of the cross plate. The outer side of the lower connecting piece is connected with an upper connecting piece through a support rod. The upper connecting piece is fixedly installed on the bottom surface of the transmission sliding plate. When the cross plate moves up and down, the two ends of the support rod connected to the side surface rotate correspondingly. The rotation of the support rod can push the transmission sliding plate to slide horizontally, thereby realizing the overall driving of the linkage control device.

[0022] Preferably, one end of the support rod forms a rotating structure with the transmission sliding plate through the upper connecting piece, and the other end of the support rod forms a rotating structure with the cross plate through the lower connecting piece. During the rotation of the support rod, its upper end can push the transmission sliding plate to slide horizontally, so as to adjust the corresponding position of the sealing cover.

[0023] Compared with the prior art, the beneficial effects of the present invention are as follows: The embedded anti-trampling 3D holographic projector adopts a new structural design, enabling the device to be embedded and installed inside the display plane, facilitating the protection of the device. Moreover, the device is provided with an anti-trampling protection structure, enhancing the protection performance during the installation and use of the embedded device. The specific content is as follows:

[0024] 1. The embedded anti-trampling 3D holographic projector is provided with an embedded installation and display structure. When the device is not in use, the electronic projection device is correspondingly arranged at the lower position inside the embedded protective cover. At this time, the upper sealing cover is shielded and arranged at the top opening of the embedded protective cover. When a 3D projection needs to be displayed, the driving motor is operated to control the driving threaded rod to rotate. Under the action of the threaded transmission structure, the threaded transmission block is controlled to move upward. It can push the electronic projection device and the projection display cover upward, so that the projection display cover moves upward to the external position of the embedded protective cover, thus facilitating the display projection. This part of the structure is convenient for protecting the projection device when it is not in use and prolongs the service life of the device.

[0025] 2. The embedded anti-trampling 3D holographic projector is provided with an anti-trampling structure. When the electronic projection device and the projection display cover are controlled to be received and protected inside the embedded protective cover, at this time, the threaded transmission block moves downward, and the micro-elastic rope on its side becomes loose. Under the elastic thrust of the reset spring, the integrated frame moves upward. The integrated frame pushes the isolation pile fixed at the upper end to penetrate through the embedded protective cover and move upward, so that the isolation pile is protected and arranged around the external periphery of the embedded protective cover, avoiding pedestrians from trampling, and improving the effect of installation and application.

[0026] 3. The embedded anti-trampling 3D holographic projector is provided with an overall linkage control structure. When the threaded transmission block is controlled to move up and down under the action of the threaded transmission structure, at this time, the threaded transmission block controls the micro-elastic rope on its side to be in an elastically stretched or loose state. At this time, the integrated frame moves up or down correspondingly with the assistance of the lower reset spring. During its up and down movement, it can control the isolation pile to move up and down correspondingly. And during the up and down movement of the integrated frame, it can control the lower fixed limit frame and the rack to move synchronously. The rack is meshed with the side of the semi-gear. Through meshing transmission, the semi-gear and the convex rod member are controlled to rotate correspondingly. The convex rod member pushes the fitting slider to slide through the inner embedded groove. This part of the structure can control the cross plate to move up and down. When the cross plate moves up and down, it can control the corresponding rotation of the support rod connected to the side. The rotation of the support rod can push the transmission slide plate to slide horizontally. During the horizontal movement of the transmission slide plate, it can control the horizontal movement of the upper connected sealing cover. By controlling the electronic projection device, other protection structures are synchronously controlled to adjust and move, and the use and control are very convenient. Description of the Drawings

[0027] Figure 1Schematic diagram of the front sectional structure of the present invention;

[0028] Figure 2 Schematic diagram of the front structure of the sealing cover of the present invention;

[0029] Figure 3 Schematic diagram of the front structure of the positioning spring of the present invention;

[0030] Figure 4 Schematic diagram of the front structure of the lower connecting piece of the present invention;

[0031] Figure 5 Schematic diagram of the side sectional structure of the present invention;

[0032] Figure 6 Schematic diagram of the side structure of the semi-gear of the present invention;

[0033] Figure 7 Schematic diagram of the front structure of the micro-elastic rope of the present invention;

[0034] Figure 8 Schematic diagram of the elevation structure of the isolation pile of the present invention.

[0035] In the figure: 1. Embedded protective cover; 2. Driving motor; 3. Driving threaded rod; 4. Side fixing plate; 5. Threaded transmission block; 6. Electronic projection device; 7. Projection display cover; 8. Support protection pad; 9. Horizontal direction control sliding frame; 10. Transmission sliding plate; 11. Positioning rod; 12. Bottom substrate; 13. Positioning spring; 14. Sealing cover; 15. Isolation pile; 16. Integrated frame; 17. Return spring; 18. Limit frame; 19. Rack; 20. Semi-gear; 21. Convex rod member; 22. Fitting slider; 23. Longitudinal direction control sliding frame; 24. Sliding frame; 25. Horizontal plate; 26. Embedded groove; 27. Lower connecting piece; 28. Support rod; 29. Upper connecting piece; 30. Micro-elastic rope; 31. Rotating cylinder. Detailed implementation manners

[0036] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0037] Please refer to Figure 1-8 , the present invention provides a technical solution: an embedded anti-trampling 3D holographic projector, the 3D holographic projection and the embedded protective cover 1 are simultaneously embedded and installed under the display platform. An electronic projection device 6 is correspondingly arranged at the middle position inside the embedded protective cover 1, and a projection display cover 7 is installed at the middle position on the upper surface of the electronic projection device 6;

[0038] An embedded anti-stampede 3D holographic projector, comprising:

[0039] A driving motor 2, symmetrically installed on the left and right sides inside the embedded protective cover 1, and the upper output end of the driving motor 2 is connected to a driving threaded rod 3. The upper end of the driving threaded rod 3 is rotatably connected below the side fixing plate 4, and the side fixing plate 4 is fixedly arranged on the inner side wall of the embedded protective cover 1. A threaded transmission block 5 is sleeved outside the driving threaded rod 3, and the threaded transmission blocks 5 are symmetrically and fixedly installed on the outer sides of the electronic projection device 6. And a support protection pad 8 is fixedly installed on the lower surface of the electronic projection device 6;

[0040] A lateral direction control sliding frame 9, fixedly installed on the upper surface of the side fixing plate 4, and a transmission sliding plate 10 is sleeved outside the side of the lateral direction control sliding frame 9. And a positioning rod 11 is penetrated and connected inside the transmission sliding plate 10. The lower surfaces of the positioning rods 11 on the left and right sides are fixed with a bottom substrate 12, and the upper surfaces of the positioning rods 11 on the left and right sides are fixedly installed with a sealing cover 14. At the same time, a positioning spring 13 is sleeved outside the positioning rod 11;

[0041] An isolation pile 15, penetrated and connected on the upper surface of the embedded protective cover 1, and a comprehensive frame 16 is fixedly installed at the lower end of the isolation pile 15. And the lower end of the comprehensive frame 16 is penetrated and connected inside the side fixing plate 4. At the same time, a reset spring 17 is sleeved outside the lower part of the comprehensive frame 16.

[0042] In this example, the electronic projection device 6 and the threaded transmission blocks 5 on the left and right sides are fixed into an integrated driving structure, and the threaded transmission block 5 and the driving threaded rod 3 form a threaded transmission structure; the outer side surface of the threaded transmission block 5 is connected to the bottom of the comprehensive frame 16 through a micro-elastic rope 30, and the micro-elastic rope 30 is wound around the outside of a rotating cylinder 31, and the rotating cylinder 31 is rotatably installed on the inner side wall of the embedded protective cover 1;

[0043] Embed the embedded protective cover 1 into the display plane (usually the display floor). The electronic projection device 6 and the projection display cover 7 are correspondingly arranged inside the embedded protective cover 1 to enhance the protection of the electronic projection device 6 and the projection display cover 7. When the device is not in use, control the electronic projection device 6 and the projection display cover 7 to be correspondingly arranged inside the embedded protective cover 1. At this time, the top opening of the embedded protective cover 1 is blocked and sealed by the sealing cover 14, and the whole device is in a sealed state, increasing the protection of the electronic devices. When using the electronic projection device 6, operate the driving motor 2 to control the rotation of the driving threaded rod 3. Under the action of the threaded transmission structure between the driving threaded rod 3 and the threaded transmission block 5, control the threaded transmission block 5 to move upward. During the upward movement of the threaded transmission block 5, drive the inner electronic projection device 6 and the projection display cover 7 to move upward synchronously. At this time, under the driving action, the sealing covers 14 on both sides move inward to both sides of the embedded protective cover 1 respectively for adjustment, and the top opening of the embedded protective cover 1 is in an open state. Under the upward pushing action of the threaded transmission block 5, the projection display cover 7 can be moved upward to the outside of the embedded protective cover 1. Operate the electronic projection device 6 to display the image, and the image presents a 3D state under the action of the projection display cover 7, making the displayed image more realistic.

[0044] There are two sealing covers 14 symmetrically distributed on the top surface of the embedded protective cover 1. The sealing covers 14 on the left and right sides are completely fitted and block the opening position on the top surface of the embedded protective cover 1. The lower end of the sealing cover 14 forms an elastic lifting structure with the transmission slide plate 10 through the positioning rod 11 and the positioning spring 13, and the transmission slide plate 10 forms a lateral sliding structure with the lateral control sliding frame 9; the isolation piles 15 are equidistantly distributed in a square structure on the integrated frame 16. The lower end of the integrated frame 16 is fixedly installed with a limit frame 18, and a rack 19 is fixedly installed inside the limit frame 18. The isolation pile 15 forms an up-and-down sliding structure with the top surface of the embedded protective cover 1; inside the embedded protective cover 1, there are also a half gear 20 and a longitudinal control sliding frame 23: the half gear 20 is rotatably installed on the inner side wall of the embedded protective cover 1, and a convex rod member 21 is fixedly installed on the side surface of the half gear 20, and an engaging slider 22 is connected to the side surface of the convex rod member 21; the longitudinal control sliding frame 23 is fixedly installed on the bottom surface of the embedded protective cover 1, and a sliding frame 24 is sleeved outside the longitudinal control sliding frame 23, and a cross plate 25 is fixed outside the sliding frame 24. Embedded grooves 26 are symmetrically opened on both sides inside the cross plate 25; the side surface of the half gear 20 is meshed with the rack 19, and there are two groups of the half gear 20 and the rack 19 symmetrically arranged about the axis of the limit frame 18 on the left and right; the side surface of the convex rod member 21 forms a sliding structure with the cross plate 25 through the engaging slider 22 and the embedded groove 26, and the engaging slider 22 penetrates through the inside of the embedded groove 26, and the cross plate 25 forms an up-and-down sliding structure with the longitudinal control sliding frame 23 through the sliding frame 24; a lower connecting piece 27 is fixed at the middle position on the side surface of the cross plate 25, and the outside of the lower connecting piece 27 is connected to the upper connecting piece 29 through a support rod 28, and the upper connecting piece 29 is fixedly installed on the bottom surface of the transmission slide plate 10; one end of the support rod 28 forms a rotating structure with the transmission slide plate 10 through the upper connecting piece 29, and the other end of the support rod 28 forms a rotating structure with the cross plate 25 through the lower connecting piece 27;

[0045] During the upward movement of the threaded drive block 5, the micro-elastic rope 30 connected to its side is first in an elastically straightened state, and then the micro-elastic rope 30 winds around the outside of the rotating cylinder 31 for stretching movement. Its upper end is fixedly connected to the lower end of the integrated frame 16. The micro-elastic rope 30 is straightened and stretched to control the downward movement of the integrated frame 16. The lower end of the integrated frame 16 penetrates into the inside of the side fixing plate 4 and slides downward, and its upper end controls the fixed isolation pile 15 to move downward, so that the isolation pile 15 penetrates into the top surface of the embedded protective cover 1 and moves into its interior. When the threaded drive block 5 moves upward to the maximum position, at this time, the isolation pile 15 just fits downward into the top surface inside of the embedded protective cover 1. During the downward movement of the integrated frame 16, its lower end presses down on the return spring 17, making the return spring 17 in a compressed state. At this time, the limiting frame 18 and the rack 19 fixed to its lower end move downward synchronously. The rack 19 is meshed and connected to the side of the semi-gear 20. Under the action of the meshing transmission structure, the semi-gear 20 can be controlled to rotate correspondingly. The rotation directions of the semi-gears 20 on the left and right sides are opposite. During its rotation, it controls the convex rod member 21 fixed to the side to rotate downward. The side of the convex rod member 21 pushes the fitting slider 22 to penetrate into the inside of the embedded groove 26 for sliding movement. Under the sliding thrust of the fitting slider 22, the cross plate 25 is controlled to move downward. The sliding frame 24 fixed inside the cross plate 25 is sleeved outside the longitudinal direction control sliding frame 23 and moves downward along the sliding direction. When the cross plate 25 moves downward, the two ends of the support rod 28 connected to its side rotate correspondingly. The upper end of the support rod 28 rotates to control the transmission slide plate 10 to move sideways. The transmission slide plate 10 is sleeved outside the transverse direction control sliding frame 9 and slides sideways. During its movement, it drives the sealing cover 14 connected to the upper end to move synchronously. Since both the side of the sealing cover 14 and the side of the opening position on the top surface of the embedded protective cover 1 are inclined structures, when the sealing cover 14 has a tendency to move horizontally to the side, at this time, under the action of the inclined surfaces in contact with each other, the lower end of the sealing cover 14 controls the positioning rod 11 to penetrate into the inside of the transmission slide plate 10 and slide downward. The sealing cover 14 compresses the positioning spring 13 connected to the lower end. When the sealing cover 14 is compressed until its upper surface fits with the lower surface of the top surface of the embedded protective cover 1, at this time, the sideways movement of the transmission slide plate 10 can control the sealing cover 14 to slide sideways to the side synchronously. Thus, when controlling the upward movement of the electronic projection device 6, first drive the isolation pile 15 to move downward, and then control the sealing cover 14 to move sideways to open the top surface of the embedded protective cover 1, facilitating the upward movement and exhibition of the projection display cover 7. When the driving motor 2 is operated to control the reverse rotation of the driving threaded rod 3, the transmission structure is opposite to the above. The downward movement of the threaded drive block 5 drives the electronic projection device 6 and the projection display cover 7 to move downward and be stored and protected inside the embedded protective cover 1. And at this time, the micro-elastic rope 30 is loose. Under the elastic thrust of the return spring 17, the integrated frame 16 is pushed upward. The integrated frame 16 pushes the isolation pile 15 upward to be protected at the peripheral position of the top surface of the embedded protective cover 1, playing a warning role.Avoid pedestrians stepping on the surface of the protection device. At the same time, when the integrated frame 16 moves upward, it controls the cross plate 25 to move upward. The cross plate 25 controls the corresponding rotation of the side support rod 28. The support rod 28 pushes the side of the transmission slide plate 10 to move. Finally, under the elastic thrust of the positioning spring 13, the sealing cover 14 is fitted and shielded at the top opening of the embedded protective cover 1, keeping the device in a sealed state and improving the protective performance of the device assembly application.

[0046] Working principle: When using this device, according to Figure 1-8 the structure shown in, the electronic projection device 6 and the projection display cover 7 are controlled by the embedded protective cover 1 to be embedded and protected inside the display plane. When using the device, the driving motor 2 is operated to control the driving threaded rod 3 to rotate. Under the threaded transmission of the threaded transmission block 5, the electronic projection device 6 and the projection display cover 7 can be pushed upward. During the upward movement of the threaded transmission block 5, the micro-elastic rope 30 is stretched around the outside of the rotating cylinder 31. It can control the integrated frame 16 and the isolation pile 15 to move downward, so that the isolation pile 15 moves downward and is embedded inside the top surface of the embedded protective cover 1. During the downward movement of the integrated frame 16, it controls the limit frame 18 and the rack 19 fixed to the bottom surface to move downward synchronously. Under the meshing transmission structure of the rack 19 and the half gear 20, the convex rod member 21 can be controlled to rotate correspondingly. The convex rod member 21 pushes the fitting slider 22 to slide through the inside of the embedded groove 26. Under the sliding structure, the cross plate 25 is controlled to move downward. The downward movement of the cross plate 25 drives the side-connected support rod 28 to rotate synchronously. When the support rod 28 rotates, it drives the transmission slide plate 10 to slide laterally towards the side of the lateral control slide frame 9. The transmission slide plate 10 controls the sealing cover 14 elastically connected to the upper end to move laterally synchronously, so that the upper opening of the embedded protective cover 1 is in an open state, facilitating the projection display cover 7 to move outwards to display images. When using the device, the driving motor 2 is operated to control the driving threaded rod 3 to rotate in the reverse direction, so that the electronic projection device 6 and the projection display cover 7 move downward. And the integrated frame 16 controls the isolation pile 15 to move upward under the elastic thrust of the return spring 17. The isolation pile 15 is protected at the peripheral position of the top surface of the embedded protective cover 1. At the same time, the integrated frame 16 moves upward to control the cross plate 25 to move upward. The cross plate 25 rotates correspondingly through the support rod 28. The support rod 28 pushes the transmission slide plate 10 to move laterally. The sealing cover 14 connected to the upper end of the transmission slide plate 10 moves upward under the elastic thrust of the positioning spring 13. Finally, the sealing cover 14 is shielded inside the top surface of the embedded protective cover 1, making the overall embedded protective cover 1 in a sealed state and increasing the protection of the device for electronic equipment.

[0047] Although embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An embedded anti-stampede 3D holographic projector, in which the 3D holographic projection and the embedded protective cover are simultaneously embedded and installed under the display platform. At the middle position inside the embedded protective cover, an electronic projection device is correspondingly arranged. At the middle position on the upper surface of the electronic projection device, a projection display cover is installed. It is characterized in that It includes: Drive motors, which are symmetrically installed on the left and right sides inside the embedded protective cover. The upper output ends of the drive motors are connected to drive threaded rods. The upper ends of the drive threaded rods are rotatably connected below the side fixing plates, and the side fixing plates are fixedly arranged on the inner side walls of the embedded protective cover. A threaded transmission block is sleeved outside the drive threaded rods, and the threaded transmission blocks are symmetrically and fixedly installed on the outer sides of the electronic projection device. A support protection pad is fixedly installed on the lower surface of the electronic projection device. A horizontal direction control sliding frame, which is fixedly installed on the upper surface of the side fixing plate. A transmission sliding plate is sleeved outside the side of the horizontal direction control sliding frame. A positioning rod penetrates through the inside of the transmission sliding plate. Bottom substrates are fixed to the lower surfaces of the positioning rods on the left and right sides. Sealing covers are fixedly installed on the upper surfaces of the positioning rods on the left and right sides. A positioning spring is sleeved outside the positioning rod. Isolation piles, which penetrate through the upper surface of the embedded protective cover. A comprehensive frame is fixedly installed at the lower end of the isolation piles. The lower end of the comprehensive frame is connected through the inside of the side fixing plate. A return spring is sleeved outside the lower part of the comprehensive frame. The outer side surface of the threaded transmission block is connected to the bottom of the comprehensive frame through a micro-elastic rope. The micro-elastic rope is wound around the outside of a rotating cylinder, and the rotating cylinder is rotatably installed on the inner side wall of the embedded protective cover. The isolation piles are evenly distributed in a square structure on the comprehensive frame. A limiting frame is fixedly installed at the lower end of the comprehensive frame. A rack is fixedly installed inside the limiting frame. The isolation piles and the top surface of the embedded protective cover form an up-and-down sliding structure. A semi-gear and a longitudinal direction control sliding frame are further arranged inside the embedded protective cover: The semi-gear is rotatably installed on the inner side wall of the embedded protective cover. A convex rod member is fixedly installed on the side surface of the semi-gear. An engaging slider is connected to the side surface of the convex rod member. The longitudinal direction control sliding frame is fixedly installed on the bottom surface of the embedded protective cover. A sliding frame is sleeved outside the longitudinal direction control sliding frame. A cross plate is fixed to the outside of the sliding frame. Embedded grooves are symmetrically opened inside both sides of the cross plate. The side surface of the semi-gear is meshed with the rack. There are 2 groups of the semi-gear and the rack symmetrically arranged about the axis of the limiting frame on the left and right. The side surface of the convex rod member forms a sliding structure with the cross plate through the engaging slider and the embedded groove. The engaging slider penetrates through the inside of the embedded groove. The cross plate forms an up-and-down sliding structure with the longitudinal direction control sliding frame through the sliding frame. A lower connecting piece is fixed to the middle position on the side surface of the cross plate. The outside of the lower connecting piece is connected to an upper connecting piece through a support rod. The upper connecting piece is fixedly installed on the bottom surface of the transmission sliding plate. One end of the support rod forms a rotating structure with the transmission slide plate through an upper connecting piece, and the other end of the support rod forms a rotating structure with the cross plate through a lower connecting piece.

2. An embedded anti-trampling 3D holographic projector according to claim 1, characterized in that: The electronic projection device is fixed to an integrated driving structure with the threaded transmission blocks on the left and right sides, and the threaded transmission block forms a threaded transmission structure with the driving threaded rod.

3. An embedded anti-stampede 3D holographic projector according to claim 1, characterized in that: Two sealing covers are symmetrically distributed on the top surface of the embedded protective cover in an embedded manner. The sealing covers on the left and right sides are completely embedded and cover the opening position on the top surface of the embedded protective cover. The lower end of the sealing cover forms an elastic lifting structure with the transmission slide plate through a positioning rod and a positioning spring, and the transmission slide plate forms a lateral sliding structure with the lateral direction control sliding frame.

Images