Intelligent 3D projection display equipment

Abstract

This invention discloses an intelligent three-dimensional projection display device, relating to the field of three-dimensional projection equipment technology. It includes a housing, a base, and holographic projection glass. The base is fixedly connected inside the housing. Four holographic projection glasses are provided, fixedly connected to each other and to the base. A projection device is mounted on top of the holographic projection glass. A display screen is fixedly connected to the outside of the housing. An inspection door is hinged to the outside of the housing near the display screen. A shielding component is installed inside the housing to shield the projection display device according to light. This invention, by unfolding the light-shielding cloth, can effectively block ambient light, reduce scattering, and avoid problems such as reflection, color fading, and blurring of the projected image. Furthermore, the light-shielding cloth can reduce the influence of ambient light on the projected light, ensuring accurate color reproduction. The position and unfolded size of the light-shielding cloth can be flexibly adjusted, thereby improving the applicability of the light-shielding method.

Description

Technical Field

[0001] This invention relates to the field of three-dimensional projection equipment technology, specifically to intelligent three-dimensional projection display equipment. Background Technology

[0002] Intelligent 3D projection display devices are a type of device that combines intelligent technology with 3D projection technology. They use a special optical system to project images or video information onto a specific space or screen, creating a three-dimensional visual effect. Unlike traditional 2D projection, it can present different sides of an object from multiple angles, giving viewers the visual experience of seeing the real object right in front of them.

[0003] When 3D projection display devices are used in environments with strong lighting, such as exhibition halls or stages with intersecting lights, the light can interfere with the presentation of holographic projection images. For example, when using intelligent 3D projection devices to display exhibits or artworks at science or art exhibitions, the light emitted by strong lights from nearby booths or high-powered lighting fixtures on the ceiling of the venue, as well as when teachers use intelligent 3D projection devices for teaching demonstrations, indoor lighting and natural light can all cause problems such as reflections, faded colors, and blurriness in the projected image, affecting the display effect. Currently, the display effect of 3D projection display devices is maintained by turning off the lights, but turning off the lights not only affects the display of other exhibits but also affects people's vision. Furthermore, for classrooms without curtains, existing 3D projection display devices cannot flexibly perform light-blocking operations according to the actual projection environment, resulting in unclear projected images.

[0004] Therefore, in view of this, the present invention provides an intelligent three-dimensional projection display device. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this invention provides an intelligent three-dimensional projection display device to solve the problems mentioned in the background section.

[0006] To achieve the above objectives, the present invention provides the following technical solution: an intelligent three-dimensional projection display device, comprising a housing, a base, and holographic projection glass. The base is fixedly connected within the housing. Four holographic projection glasses are provided, fixedly connected to each other and to the base. A projection device is mounted on the top of the holographic projection glass. A display screen is fixedly connected to the outside of the housing. An inspection door is hinged to the outside of the housing near the display screen. A shielding component is installed inside the housing to shield the projection display device according to the light. The shielding component includes an arc-shaped sliding plate slidably connected between the housing and the base. Two multi-section electric telescopic rods are symmetrically fixedly connected to the arc-shaped sliding plate. The telescopic ends of the two multi-section electric telescopic rods are jointly fixedly connected to an arc-shaped support plate. A bidirectional mounting plate is fixedly connected to the arc-shaped support plate. The frame has two rotating shafts rotatably connected inside, each shaft wrapped with a light-shielding cloth. One end of the light-shielding cloth is fixedly connected to the shaft, and the other end passes through the outside of the frame and is fixedly connected to a vertical plate. A circular guide rail is fixedly connected to the arc-shaped support plate. A movable wheel is rotatably connected to the bottom of the vertical plate and slides within the circular guide rail. Movable sleeves are fixedly connected to the sidewalls of the two vertical plates that are far apart from each other. Movable rods are slidably connected within the movable sleeves. A limit plate is rotatably connected to the upper end of the movable rod, and an auxiliary spring is fixedly connected between the bottom of the movable rod and the movable sleeve. Multiple limit grooves are evenly distributed on the upper surface of the housing. The limit plate engages with the limit groove. A spring is wound around one end of the shaft that passes through the upper part of the frame. One end of the spring is fixedly connected to the shaft, and the other end is fixedly connected to the upper part of the frame.

[0007] Preferably, the bidirectional mounting frame is provided with a positioning component for positioning and aligning the four holographic projection glasses. The positioning component includes four magnetic slot plates fixedly connected to the outer wall of the housing. A moving groove is provided on the side of the bidirectional mounting frame near the magnetic slot plates, and a slider is slidably connected in the moving groove.

[0008] Preferably, a magnetic rod is rotatably connected to the slider via a support shaft. A torsion spring is sleeved on the outer wall of the support shaft. One end of the torsion spring is fixedly connected to the support shaft, and the other end of the torsion spring is fixedly connected to the side wall of the slider. The magnetic rod is magnetically attracted to the magnetic slot plate.

[0009] Preferably, the bidirectional mounting frame is provided with a wiping assembly for wiping and cleaning the four holographic projection glasses. The wiping assembly includes a circular plate fixedly connected to the upper part of the bidirectional mounting frame. One side of the circular plate is fixedly connected to a sleeve with the same number of holographic projection glasses. A sleeve rod is slidably connected inside the sleeve. A support ring is fixedly connected to the end of the sleeve rod away from the sleeve. A sliding column is slidably connected to the support ring. A spring is provided inside the sleeve. An inclined plate is fixedly connected to the end of the sliding column away from the support ring. A spring is sleeved on the outside of the sliding column.

[0010] Preferably, the two ends of the second spring are fixedly connected to the sliding column and the support collar, respectively, and a wiping cloth is pasted on the end of the inclined plate away from the support collar. The wiping cloth is made of fiber material.

[0011] Preferably, each of the four holographic projection glass panels is fixedly connected to an inclined guide rail, and multiple rollers are rotatably connected to the side of the inclined plate near the inclined guide rail. Two notches are symmetrically opened on the surface of the inclined guide rail.

[0012] Preferably, the bidirectional mounting frame is provided with a magnetic detachment component to facilitate the removal of the slant plate from the holographic projection glass so that the cleaning cloth can be removed for replacement. The magnetic detachment component includes a magnetic block two fixedly connected to each sleeve, and a magnetic block one fixedly connected to one end of the sleeve rod near the sleeve.

[0013] Preferably, magnetic block one and magnetic block two attract each other after being energized. A switch is fixedly connected to the bottom of the moving slot. The switch, in conjunction with an external controller, can turn the power supply of magnetic block one and magnetic block two on and off. A battery is installed in the base to power magnetic block one and magnetic block two.

[0014] The intelligent three-dimensional projection display device provided by this invention has the following beneficial effects:

[0015] By inserting the limiting plate into the corresponding limiting slot, the unfolded light-blocking cloth can be fixed in place. Then, the laser projector inside the base can be turned on to project a 3D image onto the four holographic projection glasses. By unfolding the light-blocking cloth, ambient light can be effectively blocked, reducing scattering and preventing problems such as reflection, color fading, and blurring of the projected image. The light-blocking cloth can also reduce the influence of ambient light on the projected light, ensuring accurate color reproduction. Furthermore, the position and unfolded size of the light-blocking cloth can be flexibly adjusted to improve its applicability.

[0016] By wrapping two light-shielding cloths around the casing halfway, the two vertical plates are brought into contact with each other. Then, the two limiting plates are pulled upwards and the above steps are repeated, inserting them into the corresponding limiting slots. This allows the two light-shielding cloths, together with the top projection device, to form a complete circle, thus shielding and protecting the four holographic projection glass panels. This prevents dust, fibers, and small debris from accumulating on the glass surface when the projection display device is idle. Such dust and debris not only affect the appearance of the device but may also affect the image quality of the holographic projection when the device is used again. By shielding and protecting the device with light-shielding cloths, the adhesion of dust and debris can be largely prevented, keeping the glass surface clean.

[0017] The inclined plates can be adjusted to fit the size of the holographic projection glass. During this process, the wiping cloths on each inclined plate move upwards while also moving away from the inclined guide rail. This simulates manual wiping and adapts to the shape of the holographic projection glass. As the light-blocking components are raised by the multi-section electric telescopic rods to block light, the wiping cloths in the wiping components automatically wipe the corresponding holographic projection glass, eliminating the need for manual cleaning of the holographic projection glass afterwards. The wiping cloths are made of fiber cloth, which can easily absorb and remove dust particles from the glass surface, preventing dust from scratching the glass during wiping. They also remove fingerprints and oil stains, effectively wiping away fingerprints, oil secreted by human skin, and other stains on the glass, keeping the glass clean and clear and improving the imaging effect of the holographic projection.

[0018] Since the inclined plate, once raised to the top, is finally positioned within the notch near the top of the inclined guide rail, the sleeve rod attracted by the magnetic block can smoothly move the inclined plate out of the notch from the inclined guide rail. This prevents the inclined plate and the wiping cloth from sticking to the holographic projection glass. Firstly, this allows the inclined plate to detach from the holographic projection glass after moving to its final position, avoiding obstruction of the glass and affecting the imaging effect. Secondly, it also prevents the inclined plate and the wiping cloth from moving in opposite directions on the holographic projection glass when the multi-section electric telescopic rod retracts downwards, thus preventing dust from the wiping cloth from being wiped back onto the glass.

[0019] Furthermore, because the outer wall of the sleeve is frosted, there is friction between the sleeve and the outside of the sleeve, which slows down the return speed of the sleeve and prevents the inclined plate from moving too fast and colliding with the holographic projection glass. After the inclined plate is no longer in contact with the holographic projection glass, the user can peel off the wiping cloth on the inclined plate and stick on a new wiping cloth to replace the wiping cloth and maintain its cleanliness. Since the wiping cloth is also covered by the light-blocking cloth when the projection equipment is not in use, it can also keep the wiping cloth clean and improve the cleaning effect of wiping the holographic projection glass. Attached Figure Description

[0020] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0021] Figure 2 This is a schematic diagram of the mounting structure of the housing and magnetic card slot plate of the present invention;

[0022] Figure 3 For the present invention Figure 2 Enlarged structural diagram of region A in the middle;

[0023] Figure 4 This is a schematic diagram of the arc-shaped sliding plate and multi-section electric telescopic rod of the present invention.

[0024] Figure 5 For the present invention Figure 4 Enlarged structural diagram of region B in the middle;

[0025] Figure 6 For the present invention Figure 4 Enlarged structural diagram of region C in the middle;

[0026] Figure 7 This is a schematic diagram of a partial cross-sectional structure of the shell of the present invention;

[0027] Figure 8 For the present invention Figure 7 A magnified schematic diagram of the D region;

[0028] Figure 9 This is a schematic diagram of the installation structure of the inclined plate and the wiping cloth of the present invention;

[0029] Figure 10 For the present invention Figure 9 A magnified schematic diagram of the E region.

[0030] In the diagram: 1. Housing; 2. Base; 3. Holographic projection glass; 4. Projection equipment; 5. Display screen; 6. Inspection door; 21. Curved sliding plate; 22. Multi-section electric telescopic rod; 23. Curved support plate; 24. Two-way mounting frame; 25. Rotating shaft; 26. Light-blocking cloth; 27. Vertical plate; 28. Circular guide rail; 29. ​​Casters; 210. Movable sleeve; 211. Movable rod; 212. Limiting plate; 213. Auxiliary spring; 214. Limiting groove; 15. Clockwork spring; 31. Magnetic slot plate; 32. Moving slot; 33. Slider; 34. Support shaft; 35. Magnetic rod; 36. Torsion spring; 41. Ring plate; 42. Sleeve; 43. Sleeve rod; 44. Support collar; 45. Spring one; 46. Sliding column; 47. Inclined plate; 48. Spring two; 49. Wiping cloth; 410. Roller; 411. Inclined guide rail; 412. Notch; 51. Magnetic block one; 52. Magnetic block two; 53. Switch. Detailed Implementation

[0031] Embodiments of the present invention:

[0032] Please see Figure 1 , Figures 3 to 7 and Figure 9A smart 3D projection display device includes a housing 1, a base 2, and holographic projection glass 3. The base 2 is fixedly connected inside the housing 1. Four holographic projection glasses 3 are provided, fixedly connected to each other and fixedly connected to the base 2. A projection device 4 is mounted on the upper part of the holographic projection glass 3. The base 2 contains components of the projection device 4, such as a battery and a cooling fan. The projection device 4 is also fixedly installed to the housing 1 via a support rod. A display screen 5 is fixedly connected to the outside of the housing 1. A maintenance access panel is hinged to the outside of the housing 1 near the display screen 5. Door 6, with ventilation holes for the cooling fan to exhaust heat, also allows for the inspection of components inside the base 2. The housing 1 contains a shielding assembly that can block light from the projection display device. This assembly includes an arc-shaped sliding plate 21 slidably connected between the housing 1 and the base 2. Two multi-section electric telescopic rods 22 are symmetrically fixed to the arc-shaped sliding plate 21. The telescopic ends of the two multi-section electric telescopic rods 22 are jointly fixedly connected to an arc-shaped support plate 23. A two-way mounting frame 24 is fixedly connected to the arc-shaped support plate 23. Two... Each shaft 25 is covered with a light-shielding cloth 26. One end of the light-shielding cloth 26 is fixedly connected to the shaft 25, and the other end of the light-shielding cloth 26 passes through the outer side of the bidirectional mounting frame 24 and is fixedly connected to a vertical plate 27. An annular guide rail 28 is fixedly connected to the arc-shaped support plate 23. A movable wheel 29 is rotatably connected to the bottom of the vertical plate 27 and slides within the annular guide rail 28. Movable sleeves 210 are fixedly connected to the sidewalls of the two vertical plates 27 that are far apart from each other. The movable sleeves 210 are embedded in the vertical plates 27 and are at the same horizontal plane as the vertical plates 27, so that they can fit together when the two vertical plates 27 come close to each other. The movable rod 211 is slidably connected inside the movable sleeve 210. The upper end of the movable rod 211 is rotatably connected to the limit plate 212. The bottom of the movable rod 211 is fixedly connected to the movable sleeve 210. Multiple limit grooves 214 are evenly opened on the upper surface of the housing 1. The limit plate 212 is engaged with the limit groove 214. The rotating shaft 25 passes through the upper part of the bidirectional mounting frame 24 and has a spring 215 wound around one end. One end of the spring 215 is fixedly connected to the rotating shaft 25, and the other end of the spring 215 is fixedly connected to the upper part of the bidirectional mounting frame 24.

[0033] Please see Figure 2 and Figure 3The bidirectional mounting frame 24 is equipped with a positioning component for positioning and aligning four holographic projection glasses 3. The positioning component includes four magnetic slot plates 31 fixedly connected to the outer wall of the housing 1. The four magnetic slot plates 31 correspond to the four holographic projection glasses 3 respectively. A moving groove 32 is provided on the side of the bidirectional mounting frame 24 near the magnetic slot plates 31. A slider 33 is slidably connected in the moving groove 32. A magnetic rod 35 is rotatably connected to the slider 33 through a support shaft 34. A torsion spring 36 is sleeved on the outer wall of the support shaft 34. One end of the torsion spring 36 is fixedly connected to the support shaft 34, and the other end of the torsion spring 36 is fixedly connected to the side wall of the slider 33. The magnetic rod 35 and the magnetic slot plates 31 are magnetically attracted to each other and are engaged with each other.

[0034] Please see Figure 1 , Figure 4 and Figures 6 to 10 A wiping assembly for cleaning four holographic projection glasses 3 is provided on the bidirectional mounting frame 24. The wiping assembly includes a circular ring plate 41 fixedly connected to the upper part of the bidirectional mounting frame 24. A sleeve 42, the same number as the holographic projection glasses 3, is fixedly connected to one side of the circular ring plate 41. A sleeve rod 43 is slidably connected inside the sleeve 42. The outer wall of the sleeve rod 43 is frosted to increase the friction between it and the sleeve 42. A support ring 44 is fixedly connected to the end of the sleeve rod 43 away from the sleeve 42. A sliding post 46 is slidably connected to the support ring 44. A spring 45 is provided inside the sleeve 42. An inclined plate 47 is fixedly connected to the end of the sliding post 46 away from the support ring 44. A second spring 48 is sleeved on the outside of the sliding post 46. The two ends of the second spring 48 are fixedly connected to the sliding post 46 and the support ring 44, respectively. The inclined plate 47 is located away from the support ring. A wiping cloth 49 is attached to one end of 44. The wiping cloth 49 is made of fiber material. The fiber material is soft and will not scratch the glass surface like a rough material when in contact with the glass surface. Each of the four holographic projection glass 3 is fixedly connected to a slanted guide rail 411. Multiple rollers 410 are rotatably connected to the side of the slanted plate 47 near the slanted guide rail 411. The rollers 410 can move inside the slanted guide rail 411. Two notches 412 are symmetrically opened on the surface of the slanted guide rail 411. The size of the notch 412 is adapted to the size of the slanted plate 47 so that the slanted plate 47 can pass smoothly through the slanted guide rail 411. Each sleeve 42, sleeve rod 43, support collar 44, spring 1 45, sliding column 46, slanted plate 47, spring 2 48, wiping cloth 49 and roller 410 form a group. There are a total of four groups on the annular plate 41. Each group corresponds to one holographic projection glass 3.

[0035] Please see Figure 5 , Figure 6 and Figure 10The bidirectional mounting frame 24 is equipped with a magnetic detachment assembly to facilitate the removal of the slant plate 47 from the holographic projection glass 3 so as to remove the wiping cloth 49 for replacement. The magnetic detachment assembly includes a magnetic block 2 52 fixedly connected to each sleeve 42. A magnetic block 1 51 is fixedly connected to one end of the sleeve rod 43 near the sleeve 42. The magnetic block 1 51 and the magnetic block 2 52 attract each other after being energized. A switch 53 is fixedly connected to the bottom of the lower groove of the moving groove 32. The switch 53 can turn on the power of the magnetic block 1 51 and the magnetic block 2 52 through an external controller. A battery is installed in the base 2 to power the magnetic block 1 51 and the magnetic block 2 52.

[0036] The following is the entire working process and working principle of the above embodiment:

[0037] Initial state: Since magnetic block 1 51 and magnetic block 2 52 are attracted to each other, none of the four inclined plates 47 are attached to the holographic projection glass 3. Therefore, the sleeve rod 43 is always in the state of compressing spring 1 45.

[0038] When using the light-blocking component: When using 3D projection display equipment in environments such as exhibition halls with lighting or stages with interlaced lighting, light-blocking operations can be performed according to actual needs. By holding the magnetic rod 35, it rotates upward around the support shaft 34, causing the torsion spring 36 to retract, so that the bidirectional mounting frame 24 is no longer limited by the corresponding magnetic slot plate 31. Then, by holding the magnetic rod 35, the bidirectional mounting frame 24, the arc-shaped support plate 23, the multi-section electric telescopic rod 22, and the arc-shaped sliding plate 21 can be pulled to slide between the housing 1 and the base 2, thereby moving the light-blocking component to the position where strong light needs to be blocked, and moving it to the corresponding magnetic slot plate 3. After 1, the magnetic rod 35 can be loosened. At this time, under the return spring of the torsion spring 36, the magnetic rod 35 will rotate downward and reset to be inserted into the corresponding magnetic slot plate 31, and will be attracted to the magnetic slot plate 31. Then, the multi-section electric telescopic rod 22 is opened and moved upward, which will lift the arc-shaped support plate 23 and the bidirectional mounting frame 24 and move upward simultaneously. When the multi-section electric telescopic rod 22 is fully extended, the multi-section electric telescopic rod 22 is closed and kept in the extended state. At this time, the vertical plate 27 can be manually pulled and its bottom moving wheel 29 slides within the annular guide rail 28. When the vertical plate 27 moves, it will also pull the rolled-up light-blocking cloth 26 to open, and drive the light-blocking cloth 2... The other end of the shaft 25 rotates, causing the spring 215 to gradually twist and contract. When the light-blocking cloth 26 gradually unfolds to cover a sufficient area, the limiting plate 212 on one side of the vertical plate 27 needs to be held and pulled upwards. This pulls the movable rod 211 to slide upwards within the movable sleeve 210, gradually stretching the auxiliary spring 213. Since the limiting plate 212 moves synchronously to the top of the housing 1 along with the rising of the bidirectional mounting frame 24, it needs to be rotated after pulling the limiting plate 212 so that it rotates to the top of the corresponding limiting groove 214. Then the limiting plate 212 can be loosened. At this time, the auxiliary spring 213 returns to its original position. When the light is released, it will cause the movable rod 211 and the limiting plate 212 to move downwards, so that the limiting plate 212 is engaged in the corresponding limiting groove 214, thereby fixing the unfolded light-blocking cloth 26. Then, the projection device 4 can be turned on to project the light onto the four holographic projection glasses 3 for three-dimensional projection display. By unfolding the light-blocking cloth 26, the ambient light can be effectively blocked, reducing scattering and avoiding problems such as reflection, color fading, and blurring of the projected image. In addition, the light-blocking cloth 26 can reduce the influence of ambient light on the projected light, ensuring accurate color reproduction. Furthermore, the position and unfolded size of the light-blocking cloth 26 can be flexibly adjusted to improve the applicability of light blocking.

[0039] It should be noted that the blackout cloth 26 is usually placed on the side closest to the wall, the podium, and the light source, and will not affect the user's viewing of the projected image from the front. When blackout is not needed, the blackout component is stored between the housing 1 and the base 2, and will not affect viewing from all directions.

[0040] Furthermore, when the 3D projection display device is not in use, the vertical plates 27 on the two light-shielding cloths 26 can be held by hand to move the moving wheels 29 on the annular guide rail 28, so that the two light-shielding cloths 26 each encircle half a circle around the housing 1, and the two vertical plates 27 are in contact with each other. Then, the two limiting plates 212 are pulled upwards and the above steps are repeated to insert them into the corresponding limiting slots 214, so that the two light-shielding cloths 26, together with the projection device 4, form a complete circle, thereby shielding and protecting the four holographic projection glass 3. This prevents dust, fibers, and small debris in the air from accumulating on the glass surface when the projection display device is idle. These dust and debris not only affect the appearance of the device, but may also affect the image quality of the holographic projection when the device is used again. By shielding and protecting the device with the light-shielding cloths 26, the adhesion of dust and debris can be prevented to a large extent, keeping the glass surface clean.

[0041] It should be noted that when not in use, the limiting plate 212, which is engaged with the limiting groove 214, can be pulled upwards again and rotated to the side away from the housing 1. Then, the limiting plate 212 can be loosened. At this time, the originally contracted spring 215 will return to its original position and drive the rotating shaft 25 to rotate, thereby winding up the light-blocking cloth 26. This allows the moving wheel 29 at the bottom of the vertical plate 27 to slide close to the bidirectional mounting frame 24 within the annular guide rail 28, thus achieving the effect of quickly winding up the light-blocking cloth 26.

[0042] When using the wiping component: Since the holographic projection display device may generate static electricity during use, this static electricity attracts dust particles from the air and causes them to adhere to the glass surface. Furthermore, when people operate or touch the device, oils and sweat from their fingers may remain on the glass, forming fingerprints. Therefore, a wiping component is provided. Before the aforementioned multi-section electric telescopic rod 22 extends, the power to magnetic block 1 51 and magnetic block 2 52 can be turned off via an external controller, causing magnetic block 2 52 to no longer attract magnetic block 1 51. At this time, the previously contracted spring 45 will return to its original position, pushing the sleeve rod 43 to slide in the sleeve 42. Simultaneously, it will push the support ring 44 and the sliding column 46 closer to the holographic projection glass 3, causing the four inclined plates 47 to adhere to the corresponding holographic projection glass 3. However, at this time, the spring 45... 45 is not fully extended, and the roller 410 on one side of the inclined plate 47 will also be in contact with the inner wall of the inclined guide rail 411. At this time, as the multi-section electric telescopic rod 22 starts to rise, it will drive the annular plate 41, multiple sleeves 42, sleeve rods 43, support rings 44, and inclined plate 47 to move upward synchronously through the bidirectional mounting frame 24. When the inclined plate 47 moves upward, the wiping cloth 49 on one side will be in contact with the holographic projection glass 3 for wiping. Since the holographic projection glass 3 is set at an angle, as the inclined plate 47 gradually moves upward, the spring 45 will continuously reset and squeeze the sleeve rod 43 to slide outward inside the sleeve 42, and drive the inclined plate The 47 plate remains in contact with the holographic projection glass 3, maintaining the wiping effect. The roller 410 on one side of the inclined plate 47 moves and rotates within the inclined guide rail 411, reducing friction as the inclined plate 47 moves upward. The side roller 410 is also compressed by the inclined guide rail 411, causing the inclined plate 47 to drive the sliding column 46 to slide on the support ring 44, gradually compressing the second spring 48. This achieves the purpose of adjusting the position according to the size of the holographic projection glass 3. During this process, the wiping cloth 49 on each inclined plate 47 moves upward while also moving away from the inclined guide rail 411, simulating manual wiping. While wiping, it can also adapt to the shape of the holographic projection glass 3. The multi-section electric telescopic rod 22 drives the light-blocking component to rise and block the light. At the same time, the wiping cloth 49 in the wiping component will automatically wipe the corresponding holographic projection glass 3, eliminating the need for manual cleaning of the holographic projection glass 3 later. Moreover, the wiping cloth 49 is a fiber cloth that can easily absorb and remove dust particles on the glass surface, avoiding dust from scratching the glass during the wiping process. It can remove fingerprints and oil stains, effectively removing fingerprints, oil secreted by human skin and other stains from the glass, keeping the glass clean and clear, and improving the imaging effect of holographic projection.

[0043] Furthermore, as the bidirectional mounting frame 24 moves upward, the slider 33, which is slidably connected to it via the moving groove 32 on one side, and the magnetic rod 35 on the slider 33, are limited within the magnetic slot plate 31. Therefore, the slider 33 will not move with the upward movement of the bidirectional mounting frame 24. After the bidirectional mounting frame 24 moves to its final position, the slider 33 will be located at the bottom of the moving groove 32. Pressing the switch 53 at the bottom of the moving groove 32 turns on the power to the magnetic block 1 51 and the magnetic block 2 52. The magnetic block 2 52 will then attract the magnetic block 1 51, causing the sleeve rod 43 to slide within the sleeve 42. This allows the supporting collar 44 and the inclined plate 47 to gradually move away from the attached holographic projection glass 3, eliminating the need for manual intervention. In this secondary control, since the inclined plate 47, after rising to the top, is finally located in the notch 412 near the upper part of the inclined guide rail 411, the sleeve rod 43, which is attracted by the magnetic block 52, can smoothly drive the inclined plate 47 to move out of the inclined guide rail 411 from the notch 412. This prevents the inclined plate 47 and the wiping cloth 49 from sticking to the holographic projection glass 3. Firstly, it can detach from the contact with the holographic projection glass 3 after the four inclined plates 47 move to their final positions, avoiding obstruction of the glass and affecting the imaging effect of the holographic projection glass 3. Secondly, it can also prevent the inclined plate 47 and the wiping cloth 49 from moving in the opposite direction on the holographic projection glass 3 when the multi-section electric telescopic rod 22 is retracted downwards, thus preventing the dust on the wiping cloth 49 from being wiped back onto the glass.

[0044] Furthermore, when the multi-section electric telescopic rod 22 with the bidirectional mounting frame 24 is reset downwards, since the inclined plate 47 is not in contact with the holographic projection glass 3, the user can remove the wiping cloth 49 on the inclined plate 47 and attach a new wiping cloth 49 to replace it, thus maintaining the cleaning effect of the wiping cloth 49. Since the wiping cloth 49 is also covered by the light-blocking cloth 26 when the projection device 4 is not in use, the wiping cloth 49 can also be kept clean, improving the cleaning effect of wiping the holographic projection glass 3.

[0045] Furthermore, when it is necessary to clean the holographic projection glass 3 in the future, the controller can be used to de-energize the magnetic block 2 52 and stop it from attracting the magnetic block 1 51. This will cause the spring 1 45 to return and rebound, driving the sleeve rod 43 to move and reset. It will also cause the inclined plate 47 to re-enter from the notch 412 on the lower side of the inclined guide rail 411 and fit into the holographic projection glass 3. Since the outer wall of the sleeve rod 43 is frosted, there is friction between the sleeve rod 43 and the outside of the sleeve 42, which can slow down the reset speed of the sleeve rod 43 and prevent the inclined plate 47 from moving too fast with the sleeve rod 43 and causing a collision with the holographic projection glass 3.

[0046] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An intelligent three-dimensional projection display device, comprising a housing (1), a base (2), and a holographic projection glass (3), characterized in that: The base (2) is fixedly connected inside the housing (1). Four holographic projection glasses (3) are provided, and the four holographic projection glasses (3) are fixedly connected to each other and fixedly connected to the base (2). A projection device (4) is provided on the upper part of the holographic projection glass (3). A display screen (5) is fixedly connected to the outside of the housing (1). An inspection door (6) is hinged to the outside of the housing (1) near the display screen (5). A shielding component that can shield the projection display device according to the light is installed inside the housing (1). The shielding component includes... The device includes an arc-shaped sliding plate (21) that is slidably connected between the housing (1) and the base (2). Two multi-section electric telescopic rods (22) are symmetrically fixedly connected to the arc-shaped sliding plate (21). The telescopic ends of the two multi-section electric telescopic rods (22) are fixedly connected to an arc-shaped support plate (23). A two-way mounting frame (24) is fixedly connected to the arc-shaped support plate (23). Two rotating shafts (25) are rotatably connected inside the two-way mounting frame (24). The outside of each rotating shaft (25) is wrapped with a light-shielding cloth (26). One end of the light-shielding cloth (26) is connected to the rotating shaft (25). The other end of the light-shielding cloth (26) is fixedly connected to a vertical plate (27) through the outside of the two-way mounting frame (24). A ring rail (28) is fixedly connected to the arc-shaped support plate (23). A movable wheel (29) is rotatably connected to the bottom of the vertical plate (27). The movable wheel (29) slides in the ring rail (28). Movable sleeves (210) are fixedly connected to the side walls of the two vertical plates (27) that are far apart from each other. A movable rod (211) is slidably connected in the movable sleeve (210). A limiter is rotatably connected to the upper end of the movable rod (211). An auxiliary spring (213) is fixedly connected between the bottom of the plate (212) and the movable rod (211) and the movable sleeve (210). Multiple limiting grooves (214) are evenly opened on the upper surface of the housing (1). The limiting plate (212) and the limiting groove (214) are snapped together and matched. A spring spring (215) is wound around one end of the rotating shaft (25) that passes through the upper part of the bidirectional mounting frame (24). One end of the spring spring (215) is fixedly connected to the rotating shaft (25), and the other end of the spring spring (215) is fixedly connected to the upper part of the bidirectional mounting frame (24). The bidirectional mounting frame (24) is provided with a positioning component for positioning and aligning four holographic projection glasses (3). The positioning component includes four magnetic card slot plates (31) fixedly connected to the outer wall of the housing (1). A moving groove (32) is provided on the side of the bidirectional mounting frame (24) near the magnetic card slot plates (31). A slider (33) is slidably connected in the moving groove (32). A magnetic rod (35) is rotatably connected to the slider (33) via a support shaft (34). A torsion spring (36) is sleeved on the outer wall of the support shaft (34). One end of the torsion spring (36) is fixedly connected to the support shaft (34), and the other end of the torsion spring (36) is fixedly connected to the side wall of the slider (33). The magnetic rod (35) is magnetically attracted to the magnetic slot plate (31). A wiping assembly for wiping and cleaning four holographic projection glasses (3) is provided on the bidirectional mounting frame (24). The wiping assembly includes a circular ring plate (41) fixedly connected to the upper part of the bidirectional mounting frame (24). A sleeve (42) with the same number as the holographic projection glasses (3) is fixedly connected to one side of the circular ring plate (41). A sleeve rod (43) is slidably connected inside the sleeve (42). A support ring (44) is fixedly connected to the end of the sleeve rod (43) away from the sleeve (42). A sliding column (46) is slidably connected to the support ring (44). A spring (45) is provided inside the sleeve (42). An inclined plate (47) is fixedly connected to the end of the sliding column (46) away from the support ring (44). A spring (48) is sleeved on the outside of the sliding column (46).

2. The intelligent three-dimensional projection display device according to claim 1, characterized in that: The two ends of the second spring (48) are fixedly connected to the sliding column (46) and the support collar (44) respectively. The end of the inclined plate (47) away from the support collar (44) is attached with a wiping cloth (49), which is made of fiber material.

3. The intelligent three-dimensional projection display device according to claim 2, characterized in that: Each of the four holographic projection glass (3) is fixedly connected to a slanted guide rail (411). The slanted plate (47) is connected to multiple rollers (410) on the side of the slanted guide rail (411) that is close to the slanted guide rail (411). Two notches (412) are symmetrically opened on the surface of the slanted guide rail (411).

4. The intelligent three-dimensional projection display device according to claim 3, characterized in that: The bidirectional mounting frame (24) is provided with a magnetic detachment assembly to facilitate the removal of the slant plate (47) from the holographic projection glass (3) so as to remove the wiping cloth (49) for replacement. The magnetic detachment assembly includes a magnetic block two (52) fixedly connected in each sleeve (42), and a magnetic block one (51) fixedly connected to one end of the sleeve rod (43) near the sleeve (42).

5. The intelligent three-dimensional projection display device according to claim 4, characterized in that: After being powered on, magnetic block 1 (51) and magnetic block 2 (52) attract each other. A switch (53) is fixedly connected to the bottom of the moving slot (32). Switch 1 (53) can turn on the power of magnetic block 1 (51) and magnetic block 2 (52) in conjunction with an external controller. A battery is installed in the base (2) to power magnetic block 1 (51) and magnetic block 2 (52).

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