Protection device of holographic projection screen

Abstract

The utility model discloses a protection device of a holographic projection screen, which comprises a frame internally provided with the holographic projection screen, shielding assemblies used for shielding and protection are detachably connected to the front side and the rear side of the frame, and clamping assemblies used for limiting are arranged between the tops of the shielding assemblies and the frame. A positioning assembly for positioning is arranged between the bottom of the shielding assembly and the frame; the shielding assembly is additionally arranged on the frame, the holographic projection screen can be shielded and protected, the phenomenon that the holographic projection screen is damaged due to collision of hard objects in the carrying process is effectively avoided, and the service life of the holographic projection screen can be prolonged; through cooperative use of the clamping assembly, the positioning assembly and the positioning groove, detachable connection of the shielding assembly and the frame can be realized, so that the shielding assembly can be detached when the holographic projection screen is used; meanwhile, the shielding assembly is of a flat-pushing type structure, a sliding door is formed, the occupied space of the shielding assembly can be reduced, and storage is convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of holographic projection, in particular to a protective device for a holographic projection screen. Background Art

[0002] Holographic projection, a type of 3D technology, originally referred to the technique of recording and reproducing realistic three-dimensional images of objects using the principle of interference. Later, guided by science fiction films and commercial advertising, the concept of holographic projection gradually extended to commercial activities such as stage performances and exhibitions.

[0003] The existing patent document with announcement number CN219179768U discloses a holographic projection screen. Through the coordinated arrangement of a fixed frame, a holographic screen, an outer layer and an outer protective layer structure, the screen's light transmittance is guaranteed to be stable, and stable projection display work can be performed. At the same time, it has good protective performance, wear resistance and scratch resistance, and can effectively improve the structural stability and use safety of the entire screen. Through the coordinated arrangement of a movable frame, a cleaning layer, a screw, a screw block, a rotating rod, a bevel gear, a sprocket, a chain, a motor and other structures, the movable frame can be driven down conveniently and stably, so that it can stably drive the cleaning layer to automatically clean and wipe the screen surface, ensuring the cleanliness of the entire screen. There is no need for manual time-consuming and labor-intensive cleaning operations, which greatly improves the convenience of screen cleaning.

[0004] Although the above-mentioned holographic projection screen can solve the corresponding technical problems, it only makes the holographic screen wear-resistant and scratch-resistant through the outer layer and outer protective layer structure. However, during transportation, the holographic screen in the fixed frame is easily damaged by hard objects, thereby affecting its service life.

[0005] Therefore, a protective device for a holographic projection screen is proposed. Utility Model Content

[0006] The purpose of the utility model is to provide a protective device for a holographic projection screen, so as to solve the problems raised by the above-mentioned background technology.

[0007] In order to achieve the above-mentioned purpose, the main technical solutions adopted by this utility model include:

[0008] A protective device for a holographic projection screen, comprising:

[0009] A frame with a holographic projection screen installed inside, with shielding components detachably connected to its front and rear sides for shielding and protection, a clamping component for limiting position is provided between the top of the shielding component and the frame, and a positioning component for positioning is provided between the bottom of the shielding component and the frame;

[0010] Among them, the shielding assembly includes a first baffle, a second baffle and a third baffle, and the first baffle, the second baffle and the third baffle are slidably connected from the inside to the outside in sequence. The first baffle, the second baffle and the third baffle are all in contact with the frame, the clamping assembly is arranged at the top of the first baffle and the frame, and the positioning assembly is arranged at the bottom of the third baffle.

[0011] As a preferred technical solution, the snap-on assembly includes a support plate fixedly connected to the top of the first baffle, a protrusion fixedly connected to the bottom of the support plate, a groove adapted to the protrusion is opened on the top of the frame, and the protrusion is clamped in the inner cavity of the groove.

[0012] As a preferred technical solution, the positioning assembly includes a base plate fixedly connected to the bottom of the third baffle, the inner wall surface of the base plate is slidably connected to the surface of the frame, the bottom of the base plate is movably connected to an eccentric block, and a positioning groove adapted to the eccentric block is provided below the front side surface of the frame, and one end of the eccentric block is placed in the inner cavity of the positioning groove.

[0013] As a preferred technical solution, at least two eccentric blocks are connected to each other in a symmetrical rotation at the bottom of the base plate via a damping shaft.

[0014] As a preferred technical solution, a first guide member is provided between the first baffle and the second baffle, and between the second baffle and the third baffle, and a second guide member is provided between the third baffle and the frame.

[0015] As a preferred technical solution, the first guide member includes a first slide groove, which is respectively provided on both sides of the first baffle and the second baffle, the inner cavity of the first slide groove is slidably connected with a first slider, the inner wall surface of the second baffle is fixedly connected to the corresponding first slider, and the inner wall surface of the third baffle is fixedly connected to the corresponding first slider.

[0016] As a preferred technical solution, the second guide member includes a second slide groove arranged parallel to the first slide groove, and the second slide groove is respectively provided on both sides of the frame. The inner cavity of the second slide groove is slidably connected to the second slider, and one side of the second slider is fixedly connected to the third baffle.

[0017] As a preferred technical solution, the top end of the second chute is an open structure.

[0018] The utility model has at least the following beneficial effects:

[0019] The present application, by adding a shielding component to the frame, can shield and protect the holographic projection screen, effectively preventing the holographic projection screen from being damaged by hard objects during transportation, and helping to extend the service life of the holographic projection screen; through the coordinated use of the snap-on component, the positioning component and the positioning groove, a detachable connection between the shielding component and the frame can be achieved, so that the shielding component can be removed when the holographic projection screen is in use; at the same time, the shielding component adopts a push-type structure to form a sliding door, which can reduce the space occupied by the shielding component and facilitate storage. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the structure of the protective device for the holographic projection screen of the utility model. Figure 1 ;

[0021] Figure 2 This is a schematic diagram of the structure of the protective device for the holographic projection screen of the utility model. Figure 2 ;

[0022] Figure 3 This is a schematic diagram of the structure of the shielding component of the protective device for the holographic projection screen of the present invention in a retracted state;

[0023] Figure 4 This is an exploded schematic diagram of the structure of the shielding component of the protective device for the holographic projection screen of the present invention in a contracted state;

[0024] Figure 5 This is a partial structural diagram of the shielding component, the clamping component, and the positioning component of the protective device for the holographic projection screen of the utility model;

[0025] Figure 6 This is a protective device for the holographic projection screen of the utility model Figure 1 A schematic diagram of the enlarged structure of point A;

[0026] Figure 7 This is a protective device for the holographic projection screen of the utility model Figure 2 Schematic diagram of the enlarged structure of point B.

[0027] In the figure: 100, frame; 200, shielding assembly; 210, first baffle; 220, second baffle; 230, third baffle; 300, snap-fit ​​assembly; 310, support plate; 320, protrusion; 330, groove; 400, positioning assembly; 410, bottom plate; 420, eccentric block; 500, positioning groove; 600, first slide groove; 700, first slider; 800, second slide groove; 900, second slider. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0029] See also Figure 1-Figure 7 The present embodiment provides a protective device for a holographic projection screen, comprising a frame 100 in which a holographic projection screen is mounted, a shielding assembly 200 for shielding and protecting, a clamping assembly 300 for limiting, and a positioning assembly 400 for positioning. The shielding assembly 200 is detachably connected to the front and rear sides of the frame 100. The clamping assembly 300 is arranged between the top of the shielding assembly 200 and the frame 100, and the positioning assembly 400 is arranged between the bottom of the shielding assembly 200 and the frame 100. The shielding assembly 200 includes a first baffle 210, a second baffle 220, and a third baffle 230. The first baffle 210, the second baffle 220, and the third baffle 230 are slidably connected from the inside to the outside in sequence. The first baffle 210, the second baffle 220, and the third baffle 230 are all in contact with the frame 100. The clamping assembly 300 is arranged between the first baffle 210 and the top of the frame 100, and the positioning assembly 400 is arranged at the bottom of the third baffle 230.

[0030] Among them, the snap-fit ​​assembly 300 includes a support plate 310 fixedly connected to the top of the first baffle 210, and a protrusion 320 is fixedly connected to the bottom of the support plate 310. A groove 330 adapted to the protrusion 320 is opened on the top of the frame 100, and the protrusion 320 is clamped in the inner cavity of the groove 330. The frame 100 and the shielding assembly 200 can be preliminarily connected through the snap-fit ​​assembly 300 to limit the position of the shielding assembly 200 in the horizontal direction, thereby achieving a limiting effect, so that the shielding assembly 200 can be hung on the frame 100.

[0031] Among them, the positioning assembly 400 includes a base plate 410 fixedly connected to the bottom of the third baffle 230, the inner wall surface of the base plate 410 is slidably connected to the surface of the frame 100, and the bottom of the base plate 410 is movably connected with an eccentric block 420. A positioning groove 500 adapted to the eccentric block 420 is provided below the front side of the frame 100, and one end of the eccentric block 420 is placed in the inner cavity of the positioning groove 500. Through the coordinated use of the positioning assembly 400 and the positioning groove 500, the frame 100 and the shielding assembly 200 can be connected again to limit the position of the shielding assembly 200 in the vertical direction, thereby achieving the positioning effect, so that the shielding assembly 200 can be fixed on the frame 100.

[0032] Among them, at least two eccentric blocks 420 are connected to the bottom of the base plate 410 in a symmetrical rotation through the damping shaft. The damping shaft can maintain the torsion angle fixing function to ensure that the eccentric blocks 420 do not loosen after rotation.

[0033] Among them, a first guide member is provided between the first baffle 210 and the second baffle 220, and between the second baffle 220 and the third baffle 230, and a second guide member is provided between the third baffle 230 and the frame 100. The coordinated use of the first guide member and the second guide member helps to ensure the stability of the shielding assembly 200 when it is contracted or extended.

[0034] Among them, the first guide member includes a first slide groove 600, and the first slide groove 600 is respectively opened on both sides of the first baffle 210 and the second baffle 220. The inner cavity of the first slide groove 600 is slidably connected with the first slider 700, the inner wall surface of the second baffle 220 is fixedly connected to the corresponding first slider 700, and the inner wall surface of the third baffle 230 is fixedly connected to the corresponding first slider 700. When the second baffle 220 and the third baffle 230 move, they can drive the corresponding first slider 700 to slide in the inner cavity of the first slide groove 600, which helps to improve the stability of the second baffle 220 and the third baffle 230 when moving up and down.

[0035] Among them, the second guide member includes a second slide groove 800 arranged parallel to the first slide groove 600, and the second slide groove 800 is respectively opened on both sides of the frame 100. The inner cavity of the second slide groove 800 is slidably connected with the second slider 900, and one side of the second slider 900 is fixedly connected to the third baffle 230. When the third baffle 230 moves up and down, it can drive the second slider 900 to slide up and down in the inner cavity of the second slide groove 800, which can not only further improve the stability of the third baffle 230 when moving up and down, but also effectively avoid the lower part of the shielding component 200 from separating from the frame 100, causing the shielding to be unstable.

[0036] The top of the second slide groove 800 is an open structure, so that the second slider 900 can move upward and disengage from the inner cavity of the second slide groove 800 to ensure that the shielding assembly 200 can be separated from the frame 100.

[0037] The working principle of the present invention is as follows: the shielding assembly 200 in a retracted state is placed on the front side or rear side of the frame 100, the second slider 900 is aligned with the second slide groove 800 and slides in, so that the second slider 900 gradually slides into the inner cavity of the second slide groove 800 until the top of the support plate 310 contacts the top of the frame 100, and the protrusion 320 is stuck in the inner cavity of the groove 330, and the preliminary connection operation of the shielding assembly 200 and the frame 100 is completed; then the third baffle 230 is pulled downward, so that the third baffle 230 drives the second slider 900 to continue to slide in the inner cavity of the second slide groove 800, and the third baffle 230 drives the corresponding first slider 700 to slide in the inner cavity of the first slide groove 600 until the maximum limit is reached, and the third baffle 230 passes through the corresponding The first slider 700 pulls the second baffle 220 to move downward until the second baffle 220 drives the corresponding first slider 700 to slide in the inner cavity of the first slide groove 600 to the maximum, thereby realizing the extension operation of the shielding component 200, so that the shielding component 200 can shield and protect the holographic projection screen in the frame 100; by rotating the eccentric block 420, one end of the eccentric block 420 is rotated to the inner cavity of the positioning groove 500 with the damping shaft as the center, the shielding component 200 and the frame 100 can be reconnected, so that the shielding component 200 can be stably assembled on the frame 100; on the contrary, when using the holographic projection screen, the shielding component 200 can be removed from the frame 100 by simply reversing the above steps.

[0038] Any portion not described in the present invention is the same as the prior art or can be implemented using the prior art. Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A protective device for a holographic projection screen, characterized in that: The invention comprises a frame (100) in which a holographic projection screen is installed, and shielding components (200) for shielding and protecting are detachably connected to the front and rear sides of the frame (100); a clamping component (300) for limiting is provided between the top of the shielding component (200) and the frame (100); and a positioning component (400) for positioning is provided between the bottom of the shielding component (200) and the frame (100); The shielding assembly (200) comprises a first baffle (210), a second baffle (220) and a third baffle (230); the first baffle (210), the second baffle (220) and the third baffle (230) are slidably connected from the inside to the outside in sequence; the first baffle (210), the second baffle (220) and the third baffle (230) are all in contact with the frame (100); the clamping assembly (300) is arranged at the top of the first baffle (210) and the frame (100); and the positioning assembly (400) is arranged at the bottom of the third baffle (230).

2. The protective device for the holographic projection screen according to claim 1, characterized in that: The clamping assembly (300) comprises a support plate (310) fixedly connected to the top of the first baffle (210); a protrusion (320) is fixedly connected to the bottom of the support plate (310); a groove (330) adapted to the protrusion (320) is formed on the top of the frame (100); and the protrusion (320) is clamped in the inner cavity of the groove (330).

3. The protective device for the holographic projection screen according to claim 1, characterized in that: The positioning assembly (400) includes a base plate (410) fixedly connected to the bottom of the third baffle (230), the inner wall surface of the base plate (410) is slidably connected to the surface of the frame (100), the bottom of the base plate (410) is movably connected to an eccentric block (420), and a positioning groove (500) adapted to the eccentric block (420) is provided below the front side surface of the frame (100), and one end of the eccentric block (420) is placed in the inner cavity of the positioning groove (500).

4. The protective device for the holographic projection screen according to claim 3, characterized in that: At least two eccentric blocks (420) are connected to the bottom of the base plate (410) via a damping shaft so as to be symmetrically rotated.

5. The protective device for holographic projection screen according to claim 1, characterized in that: A first guide member is provided between the first baffle (210) and the second baffle (220), and between the second baffle (220) and the third baffle (230), and a second guide member is provided between the third baffle (230) and the frame (100).

6. The protective device for the holographic projection screen according to claim 5, characterized in that: The first guide member includes a first slide groove (600), and the first slide groove (600) is respectively provided on both sides of the first baffle (210) and the second baffle (220). The inner cavity of the first slide groove (600) is slidably connected to the first slider (700), the inner wall surface of the second baffle (220) is fixedly connected to the corresponding first slider (700), and the inner wall surface of the third baffle (230) is fixedly connected to the corresponding first slider (700).

7. The protective device for the holographic projection screen according to claim 6, characterized in that: The second guide member includes a second slide groove (800) arranged parallel to the first slide groove (600), and the second slide groove (800) is respectively provided on both sides of the frame (100). The inner cavity of the second slide groove (800) is slidably connected to the second slider (900), and one side of the second slider (900) is fixedly connected to the third baffle (230).

8. The protective device for the holographic projection screen according to claim 7, characterized in that: The top end of the second chute (800) is an open structure.

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