CN213365238U - Indoor three-projection 270-degree scene simulation system - Google Patents

Indoor three-projection 270-degree scene simulation system Download PDF

Info

Publication number
CN213365238U
CN213365238U CN202022330531.0U CN202022330531U CN213365238U CN 213365238 U CN213365238 U CN 213365238U CN 202022330531 U CN202022330531 U CN 202022330531U CN 213365238 U CN213365238 U CN 213365238U
Authority
CN
China
Prior art keywords
laser projection
projection device
wall
indoor
laser
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
CN202022330531.0U
Other languages
Chinese (zh)
Inventor
杨成龙
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to CN202022330531.0U priority Critical patent/CN213365238U/en
Application granted granted Critical
Publication of CN213365238U publication Critical patent/CN213365238U/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Landscapes

  • Projection Apparatus (AREA)

Abstract

An indoor three-projection 270-degree scene simulation system is used for scene simulation inside a building room, the building room is provided with a door opening for entering and exiting the building room, and the three-projection 270-degree scene simulation system comprises a first laser projection device, a second laser projection device and a third laser projection device; the door opening is formed in the door wall, and a projection area is formed among the left wall, the top wall and the right wall; the first laser projection equipment, the second laser projection equipment and the third laser projection equipment are all fixed on the inner wall of the door wall and avoid opening the door opening; the first laser projection equipment, the second laser projection equipment and the third laser projection equipment are arranged in a triangular shape; the projection surface of the first laser projection device faces towards the left wall, the second laser projection device faces towards the top wall, and the third laser projection device faces towards the right wall. The technical scheme solves the problems of large limitation, narrow audience space, serious noise, potential safety hazard, insufficient operation interaction feeling and the like of virtual projection, and is particularly suitable for simulating indoor virtual scenes.

Description

Indoor three-projection 270-degree scene simulation system
Technical Field
The utility model relates to a projection technology field, concretely relates to indoor three projection 270 degrees scene analog system.
Background
At present, at indoor rest places such as hotels, hotels and bedrooms, wall paper, painting and the like are usually adopted for decoration, the decoration effect is single, the user experience effect is not obvious enough, images can be projected onto the ground or walls in a projection mode, any picture can be imaged on any lighttight medium in a light mode by a projection lamp, for example, the indoor ceiling, the indoor bottom plate and the indoor wall nearby, the projected picture has a dynamic effect, and people can easily attract the eyes of people.
For example, in the existing backdrop projection, the principle of the backdrop projection is that a projection screen is placed on the whole dome by a plurality of projectors and a projection fusion technology, and a sound system and a lighting system are matched, so that an magnificent and magnificent image is formed, an LED screen is adopted to replace projection as a playing carrier, but the LED has high requirements on installation environment.
The existing canopy projection technology has strong use limitation and can only be used in relatively large places; the audience space is too narrow and can only be used in public places basically; the noise problem is serious, and the indoor use condition is limited; the lumen requirement is high, so that the equipment temperature is about 70 degrees, the heat dissipation requirement is high, and potential safety hazards exist; the cost is too high, and the product is difficult to be popularized to the decoration and use of home decoration; the canopy simulation has limitation, which causes insufficient experience of users; the operation feeling is insufficient, the user can only passively use the simulation scene selected by the operator, and can not freely select the required scene; the problem of insufficient entertainment interactivity exists; the problems of short daily service time and short overall service life exist.
SUMMERY OF THE UTILITY MODEL
Therefore, the utility model provides an indoor three projection 270 degrees scene analog system to solve the virtual projection limitation that exists among the prior art big, the audience face is narrow, the noise is serious, there is the potential safety hazard, the mutual dynamic not enough scheduling problem of operation, be particularly suitable for carrying out the simulation of indoor virtual scene.
In order to achieve the above object, the present invention provides the following technical solutions: an indoor three-projection 270-degree scene simulation system is used for scene simulation inside a building room, wherein the building room is provided with a door opening for entering and exiting the building room, and the three-projection 270-degree scene simulation system comprises a first laser projection device, a second laser projection device and a third laser projection device; the building room is provided with a door wall, a left wall, a top wall and a right wall, the door opening is formed in the door wall, and a projection area is formed among the left wall, the top wall and the right wall; the first laser projection equipment, the second laser projection equipment and the third laser projection equipment are all fixed on the inner wall of the door wall and avoid the door opening; the first laser projection equipment, the second laser projection equipment and the third laser projection equipment are arranged in a triangular shape; the projection surface of the first laser projection device faces the left wall, the second laser projection device faces the top wall, and the third laser projection device faces the right wall.
As an optimal scheme of an indoor three-projection 270-degree scene simulation system, the system further comprises a hardware fusion processor, wherein the hardware fusion processor comprises a first display card output port, a second display card output port and a third display card output port, the hardware fusion processor is connected with the first laser projection device through the first display card output port, the hardware fusion processor is connected with the second laser projection device through the second display card output port, and the hardware fusion processor is connected with the third laser projection device through the third display card output port.
As a preferred scheme of an indoor three-projection 270-degree scene simulation system, the hardware fusion processor outputs a first sub-image to the first laser projection device through the first graphics card output port, and the first sub-image is projected to the left wall by the first laser projection device; the hardware fusion processor outputs a second sub-image to the second laser projection device through the second display card output port, and the second sub-image is projected to the top wall by the second laser projection device; and the hardware fusion processor outputs a third sub-image to the third laser projection device through the third display card output port, and the third sub-image is projected to the right wall by the third laser projection device.
As a preferable scheme of the indoor three-projection 270-degree scene simulation system, the first sub-image, the second sub-image and the third sub-image are displayed in the projection area to form a virtual scene inside the building room.
As a preferred scheme of an indoor three-projection 270-degree scene simulation system, the left wall and the top wall form 90 degrees, and the right wall and the top wall form 90 degrees; two side surfaces of the first laser projection device are perpendicular to the left wall; two side surfaces of the second laser projection device are perpendicular to the top wall; and two side surfaces of the third laser projection device are perpendicular to the right wall.
The system is characterized by further comprising a network server and a control terminal as a preferable scheme of the indoor three-projection 270-degree scene simulation system, wherein the network server is connected with the hardware fusion processor, the control terminal is connected with the network server, and the control terminal is used for sending a control instruction to the hardware fusion processor through the network server.
The system is used as a preferred scheme of an indoor three-projection 270-degree scene simulation system, and further comprises a control terminal, wherein the control terminal is connected with the hardware fusion processor, and is used for sending a control instruction to the hardware fusion processor through a serial port.
As a preferable scheme of the indoor three-projection 270-degree scene simulation system, the building room is an entertainment place, a meeting room, a hotel hall or a classroom.
As a preferable scheme of the indoor three-projection 270-degree scene simulation system, the virtual scene formed by the first sub-image, the second sub-image and the third sub-image displayed in the projection area is a wedding scene, a teaching scene, a conference scene, a sea scene, a forest, a rainy day, a snowy day or lightning of thunderstorm.
The utility model solves the problem of strong limitation of the traditional virtual projection, can be used in any room, reduces the effect which can be achieved by using a large-scale occasion originally to a limited space, and can achieve the scene simulation effect;
the utility model solves the problem that the face of the audience is too narrow, can be used in public and non-public occasions, and realizes that different fields and people can use better scene simulation technology;
the utility model solves the problems of serious noise, limited indoor use and reduced noise by the laser television principle, thereby achieving the indoor use condition; the heat dissipation is reduced, the normal temperature of the equipment is reduced to about 35 degrees, and the potential safety hazard problem is solved;
the utility model solves the problems that the cost is too high and the popularization to the use of home decoration is difficult, the requirement of the original canopy projection to the projector is high, the cost of a single project special projection device is different at each of hundreds of thousands, a plurality of projection devices are needed to achieve the canopy effect, the calculation cost of the LED is too high according to the square meter, the cost of one canopy is millions, the common home and the public place are difficult to bear, the utility model reduces the scene simulation cost of 270 degrees to within 15 thousands, and the acceptance of consumers is high;
the utility model solves the problem that the sky screen simulation is limited, which causes the user to experience insufficient feeling, and can realize the scene simulation effect of the left, the upper and the right, so that the user has more immersive sensory effect;
the utility model solves the problems that the operation feeling is not enough, the user can only passively use the simulation scene selected by the operator, and can not freely select the required scene, the technical proposal can lead the user to independently control the scene simulation effect of the space to which the user belongs, and the hardware fusion processor is controlled by the control terminal to realize the transformation of the simulation scene;
the utility model solves the problem of insufficient entertainment interactivity, the control terminal can be connected with a mobile phone to realize the screen projection function of the mobile phone and can also be connected with a network to realize the interaction and entertainment problems;
the utility model solves the problems of short daily service time and short overall service life of canopy projection, and the laser projection equipment reduces heat dissipation;
the utility model provides an interior decoration update problem, traditional interior decoration decorates in case the shaping, and the replacement cost is higher, needs a large amount of time and money, and this technical scheme can light solve interior decoration problem by a key, and light reaches the update effect.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. It should be apparent that the drawings in the following description are merely exemplary, and that other embodiments can be derived from the drawings provided by those of ordinary skill in the art without inventive effort.
The structure, ratio, size and the like shown in the present specification are only used for matching with the content disclosed in the specification, so as to be known and read by people familiar with the technology, and are not used for limiting the limit conditions which can be implemented by the present invention, so that the present invention has no technical essential significance, and any structure modification, ratio relationship change or size adjustment should still fall within the scope which can be covered by the technical content disclosed by the present invention without affecting the efficacy and the achievable purpose of the present invention.
Fig. 1 is a schematic view of an indoor three-projection 270-degree scene simulation system provided in an embodiment of the present invention;
fig. 2 is a schematic diagram of the hardware deployment of an indoor three-projection 270-degree scene simulation system provided in the embodiment of the present invention;
fig. 3 is a schematic diagram of the indoor three-projection 270-degree scene simulation system hardware deployment provided in another embodiment of the present invention.
In the figure: 1. a building room; 2. a door opening; 3. a first laser projection device; 4. a second laser projection device; 5. a third laser projection device; 6. a door wall; 7. a left wall; 8. a top wall; 9. a right wall; 10. a projection area; 11. a hardware fusion processor; 12. a first graphics card output port; 13. a second graphics card output port; 14. a third graphics card output port; 15. a network server; 16. and controlling the terminal.
Detailed Description
The present invention is described in terms of specific embodiments, and other advantages and benefits of the present invention will become apparent to those skilled in the art from the following disclosure. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Referring to fig. 1, an indoor three-projection 270-degree scene simulation system is provided, which is used for scene simulation inside a building room 1, and the applied building room 1 may be an entertainment place, a conference room, a meeting room, a hotel hall or a classroom. The building room 1 is provided with a door opening 2 for entering and exiting the building room 1, and the three-projection 270-degree scene simulation system comprises a first laser projection device 3, a second laser projection device 4 and a third laser projection device 5; the building room 1 is provided with a door wall 6, a left wall 7, a top wall 8 and a right wall 9, the door opening 2 is formed in the door wall 6, and a projection area 10 is formed among the left wall 7, the top wall 8 and the right wall 9; the first laser projection device 3, the second laser projection device 4 and the third laser projection device 5 are all fixed on the inner wall of the door wall 6 and avoid the door opening 2; the first laser projection device 3, the second laser projection device 4 and the third laser projection are arranged in a triangular shape; the projection plane of the first laser projection device 3 faces the left wall 7, the second laser projection device 4 faces the top wall 8, and the third laser projection device 5 faces the right wall 9.
Specifically, the angle between the left wall 7 and the top wall 8 is 90 degrees, and the angle between the right wall 9 and the top wall 8 is 90 degrees; two side surfaces of the first laser projection device 3 are perpendicular to the left wall 7; two side surfaces of the second laser projection device 4 are perpendicular to the top wall 8; two side surfaces of the third laser projection device 5 are perpendicular to the right wall 9. Projection areas 10 of the left wall 7, the top wall 8 and the right wall 9 are overlapped, so that 270-degree scene simulation is realized.
Specifically, the first laser projection device 3, the second laser projection device 4 and the third laser projection device 5 applied in the technical scheme are laser projectors/laser televisions, the performance is stable, the laser is a cold light source, the machine can be instantly turned on and off, preheating and heat dissipation are not needed, and the brightness of the machine can reach 100% when the machine is turned on; the color gamut of the projector has long service life, slow attenuation of brightness during long-term use, more than 2 ten thousand hours of service life and wide color gamut, and is about 2 times that of the common projector.
Referring to fig. 2 or fig. 3, specifically, the system further includes a hardware fusion processor 11, where the hardware fusion processor 11 includes a first graphics card output port 12, a second graphics card output port 13, and a third graphics card output port 14, the hardware fusion processor 11 is connected to the first laser projection device 3 through the first graphics card output port 12, the hardware fusion processor 11 is connected to the second laser projection device 4 through the second graphics card output port 13, and the hardware fusion processor 11 is connected to the third laser projection device 5 through the third graphics card output port 14.
Specifically, the hardware fusion processor 11 belongs to the prior art, and the related processing algorithm or method is the prior art, and has a pure hardware FPGA architecture, no Windows operating system, no crash, and super stability and reliability. The power supply is redundant and runs uninterruptedly in all weather. The input/output board card heat dissipation module can be hot-plugged, perfect compatibility and controllability are achieved, and the input/output board card heat dissipation module can be conveniently combined with other application systems. The network and the serial port can be conveniently controlled. The inside has the solid-state memory of large capacity for depositing the material video file.
Specifically, the hardware fusion processor 11 outputs a first sub-image to the first laser projection device 3 through the first graphics card output port 12, where the first sub-image is projected to the left wall 7 by the first laser projection device 3; the hardware fusion processor 11 outputs a second sub-image to the second laser projection device 4 through the second graphics card output port 13, and the second sub-image is projected to the top wall 8 by the second laser projection device 4; the hardware fusion processor 11 outputs a third sub-image to the third laser projection device 5 through the third graphics card output port 14, and the third sub-image is projected to the right wall 9 by the third laser projection device 5. The first, second and third sub-images are displayed in the projection area 10 to form a virtual scene inside the building room 1.
Specifically, the virtual scene formed by the first sub-image, the second sub-image and the third sub-image displayed in the projection area 10 is a wedding scene, a teaching scene, a meeting scene, a sea scene, a forest, a rainy day, a snowy day or a thunderstorm lightning. The images of the virtual scene can be set according to the preference of each person, so that the happiness of people is improved, for example, many people work in a muddy jungle for a plurality of days, nights, want to enjoy a sea scene, think of relaxing in the forest, or meet other requirements. Therefore, the technology can effectively relieve the pressure of people and improve the happiness. For example, some people like to have a rest in rainy days or have a better rest in rainy days, the technical scheme can simulate a rainy weather virtual scene, so that the rest quality of the crowd can be improved, the physical function is improved, and the scene is determined according to the requirements of the people.
Referring to fig. 2, in an embodiment of the indoor three-projection 270-degree scene simulation system, the system further includes a network server 15 and a control terminal 16, where the network server 15 establishes a connection relationship with the hardware fusion processor 11, the control terminal 16 establishes a connection relationship with the network server 15, and the control terminal 16 is configured to send a control instruction to the hardware fusion processor 11 through the network server 15.
Referring to fig. 3, in an embodiment of the indoor three-projection 270-degree scene simulation system, the system further includes a control terminal 16, where the control terminal 16 establishes a connection relationship with the hardware fusion processor 11, and the control terminal 16 is configured to send a control instruction to the hardware fusion processor 11 through a serial port.
Specifically, the control terminal 16 may be a mobile phone, a tablet, or a computer, and the control terminal 16 sends control instruction codes with various functions to the hardware fusion processor 11 through a serial port or a network port. The video material content to be played is stored in the large-capacity solid-state memory in the hardware fusion processor 11, and the control instruction code is sent out through the control panel or the APP end of the control terminal 16 through the hardware interface or the network. The immersive fusion picture changes the environmental vision, simulates the key characteristics of a selected virtual scene to be shown, and enables people to have an immersive feeling.
The utility model solves the problem of strong limitation of the traditional virtual projection, can be used in any room, reduces the effect which can be achieved by using a large-scale occasion originally to a limited space, and can achieve the scene simulation effect; the utility model solves the problem that the face of the audience is too narrow, can be used in public and non-public occasions, and realizes that different fields and people can use better scene simulation technology; the utility model solves the problems of serious noise, limited indoor use and reduced noise by the laser television principle, thereby achieving the indoor use condition; the heat dissipation is reduced, the normal temperature of the equipment is reduced to about 35 degrees, and the potential safety hazard problem is solved; the utility model solves the problems that the cost is too high and the popularization to the use of home decoration is difficult, the requirement of the original canopy projection to the projector is high, the cost of a single project special projection device is different at each of hundreds of thousands, a plurality of projection devices are needed to achieve the canopy effect, the calculation cost of the LED is too high according to the square meter, the cost of one canopy is millions, the common home and the public place are difficult to bear, the utility model reduces the scene simulation cost of 270 degrees to within 15 thousands, and the acceptance of consumers is high; the utility model solves the problem that the sky screen simulation is limited, which causes the user to experience insufficient feeling, and can realize the scene simulation effect of the left, the upper and the right, so that the user has more immersive sensory effect; the utility model solves the problems that the operation feeling is not enough, the user can only passively use the simulation scene selected by the operator, and can not freely select the required scene, the technical proposal can lead the user to independently control the scene simulation effect of the space to which the user belongs, and the hardware fusion processor 11 is controlled by the control terminal 16 to realize the transformation of the simulation scene; the utility model solves the problem of insufficient entertainment interactivity, the control terminal 16 can be connected with a mobile phone to realize the screen projection function of the mobile phone and can also be connected with a network to realize the interaction and entertainment; the utility model solves the problems of short daily service time and short overall service life of canopy projection, and the laser projection equipment reduces heat dissipation; the utility model provides an interior decoration update problem, traditional interior decoration decorates in case the shaping, and the replacement cost is higher, needs a large amount of time and money, and this technical scheme can light solve interior decoration problem by a key, and light reaches the update effect.
Although the invention has been described in detail with respect to the general description and the specific embodiments, it will be apparent to those skilled in the art that modifications and improvements can be made based on the invention. Therefore, such modifications and improvements are intended to be within the scope of the invention as claimed.

Claims (8)

1. An indoor three-projection 270-degree scene simulation system is used for scene simulation inside a building room (1), wherein the building room (1) is provided with a door opening (2) for entering and exiting the building room (1), and is characterized by comprising a first laser projection device (3), a second laser projection device (4) and a third laser projection device (5); the building room (1) is provided with a door wall (6), a left wall (7), a top wall (8) and a right wall (9), the door opening (2) is formed in the door wall (6), and a projection area (10) is formed among the left wall (7), the top wall (8) and the right wall (9); the first laser projection device (3), the second laser projection device (4) and the third laser projection device (5) are all fixed on the inner wall of the door wall (6) and avoid the door opening (2); the first laser projection device (3), the second laser projection device (4) and the third laser projection device are arranged in a triangular shape; the projection surface of the first laser projection device (3) faces the left wall (7), the second laser projection device (4) faces the top wall (8), and the third laser projection device (5) faces the right wall (9).
2. The indoor three-projection 270-degree scene simulation system according to claim 1, further comprising a hardware fusion processor (11), wherein the hardware fusion processor (11) includes a first graphics card output port (12), a second graphics card output port (13), and a third graphics card output port (14), the hardware fusion processor (11) is connected to the first laser projection device (3) through the first graphics card output port (12), the hardware fusion processor (11) is connected to the second laser projection device (4) through the second graphics card output port (13), and the hardware fusion processor (11) is connected to the third laser projection device (5) through the third graphics card output port (14).
3. An indoor three-projection 270-degree scene simulation system according to claim 2, wherein the hardware fusion processor (11) outputs a first sub-image to the first laser projection device (3) through the first graphics card output port (12), and the first sub-image is projected to the left wall (7) by the first laser projection device (3); the hardware fusion processor (11) outputs a second sub-image to the second laser projection device (4) through the second graphics card output port (13), and the second sub-image is projected to the top wall (8) by the second laser projection device (4); and the hardware fusion processor (11) outputs a third sub-image to the third laser projection device (5) through the third graphics card output port (14), and the third sub-image is projected to the right wall (9) by the third laser projection device (5).
4. An indoor three-projection 270-degree scene simulation system according to claim 3, wherein said first, second and third sub-images are displayed in said projection area (10) to form a virtual scene inside said building room (1).
5. An indoor three-projection 270-degree scene simulation system according to claim 2, wherein the left wall (7) and the top wall (8) are 90 degrees, and the right wall (9) and the top wall (8) are 90 degrees; two side faces of the first laser projection device (3) are perpendicular to the left wall (7); two side surfaces of the second laser projection device (4) are perpendicular to the top wall (8); and two side surfaces of the third laser projection device (5) are perpendicular to the right wall (9).
6. The indoor three-projection 270-degree scene simulation system according to claim 3, further comprising a network server (15) and a control terminal (16), wherein the network server (15) establishes a connection relationship with the hardware fusion processor (11), the control terminal (16) establishes a connection relationship with the network server (15), and the control terminal (16) is configured to send a control instruction to the hardware fusion processor (11) through the network server (15).
7. The indoor three-projection 270-degree scene simulation system according to claim 3, further comprising a control terminal (16), wherein the control terminal (16) establishes a connection relationship with the hardware fusion processor (11), and the control terminal (16) is configured to send a control instruction to the hardware fusion processor (11) through a serial port.
8. An indoor three-projection 270-degree scene simulation system as claimed in claim 1, wherein the building room (1) is an entertainment place, a conference room, a meeting room, a hotel lobby or a classroom.
CN202022330531.0U 2020-10-19 2020-10-19 Indoor three-projection 270-degree scene simulation system Active CN213365238U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202022330531.0U CN213365238U (en) 2020-10-19 2020-10-19 Indoor three-projection 270-degree scene simulation system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202022330531.0U CN213365238U (en) 2020-10-19 2020-10-19 Indoor three-projection 270-degree scene simulation system

Publications (1)

Publication Number Publication Date
CN213365238U true CN213365238U (en) 2021-06-04

Family

ID=76131245

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202022330531.0U Active CN213365238U (en) 2020-10-19 2020-10-19 Indoor three-projection 270-degree scene simulation system

Country Status (1)

Country Link
CN (1) CN213365238U (en)

Similar Documents

Publication Publication Date Title
US7180529B2 (en) Immersive image viewing system and method
US20150002827A1 (en) Theater structure and multi-projection system using the same
EP3442222B1 (en) System for projecting immersive audiovisual content
CN207399423U (en) A kind of distributed network video process apparatus
US11356639B1 (en) System and method for performing immersive audio-visual communications
US10015444B1 (en) Network architecture for immersive audio-visual communications by temporary communication structures
CN201039361Y (en) Intelligent electronic meeting room
JP2023505918A (en) Holographic display device and method of use
CN105247415A (en) Theater structure and multi-projection system using the same
CN214279394U (en) Holographic interaction system interacting with entity
JPH09138368A (en) Composite video display system
CN213365238U (en) Indoor three-projection 270-degree scene simulation system
CN202171927U (en) Phantom imaging system
CN111880666A (en) Novel interactive digital media fuses show integrated equipment
US20160203744A1 (en) Low profile simulated 3d display device
CN112258630A (en) Indoor three-projection 270-degree scene simulation method
CN214541301U (en) Factory propaganda simulation sand table device
CN212809493U (en) Scene type 6D backdrop device
CN210713979U (en) Virtual host theater based on AR technology
CN1294517C (en) Special effect stage theatre system
CN210015702U (en) Ferris wheel multimedia informatization vocal accompaniment system
Park et al. Gyeongju VR theater: a journey into the breath of Sorabol
CN104202593A (en) Large-sized orthogonal multi-screen display apparatus
TWM581138U (en) Multi-functional theater system
CN219320955U (en) 360-degree three-dimensional virtual-real interactive sand table with middle hidden supporting structure

Legal Events

Date Code Title Description
GR01 Patent grant
GR01 Patent grant