Projection screen

Abstract

The utility model discloses a projection screen, and belongs to the field of projection display, the projection screen comprises a rollable imaging layer and a supporting structure, the supporting structure is arranged on one side, far away from an imaging display surface, of the imaging layer, and the supporting structure is a plurality of continuously connected strip-shaped structures with arc-shaped or zigzag sections; the strip-shaped structure extends in the vertical direction of the imaging layer, and the supporting structure can be curled in the horizontal direction of the imaging layer. According to the projection screen, the supporting structures arranged in the vertical direction are arranged, so that the projection screen can be curled in the horizontal direction on the basis of ensuring the flatness of the projection screen, the size of the rolled projection screen is reduced, and the projection screen is convenient to package, transport and carry.

Description

Technical Field

[0001] The present application relates to the field of projection display, and in particular to a projection screen. Background Art

[0002] In the prior art of projection display, the projection screen is often made of a rollable sheet material to achieve a rollable function, such as Figure 1 As shown in Figures a and b, the projection screen is usually hung on the wall and rolled up and unfolded in the vertical direction. Since the best aspect ratio for viewing the screen based on ergonomics is 16:9, the aspect ratio of the projection screen is often set to 16:9. This makes the length of the projection screen that rolls up in the vertical direction related to the length of the long side of the screen, L. Since the long side is much longer than the wide side, the length of the projection screen after rolling up is very large, which takes up a lot of space and is not conducive to packaging, transportation and carrying. Figure 2 As shown, the projection screen often has an uneven bending deformation y when it is unfolded after being rolled up, causing the display image to be distorted, affecting the viewing effect.

[0003] Therefore, a projection screen that can be rolled up at the wide side (rolled up along the horizontal direction of the projection screen) is needed, which can reduce the rolled-up size of the projection screen and ensure the flatness and viewing effect of the projection screen. Utility Model Content

[0004] The present application provides a projection screen that can be rolled up in the horizontal direction of the projection screen to reduce the rolled-up size of the screen, and can also improve the flatness of the projection screen to enhance the viewing effect.

[0005] The technical solutions provided by this application are as follows:

[0006] A projection screen comprises a rollable imaging layer and a support structure, wherein the support structure is arranged on a side of the imaging layer away from an imaging display surface, the support structure is a plurality of continuously connected strip structures with arc-shaped or sawtooth-shaped cross sections, the strip structures extend in the vertical direction of the imaging layer, and the support structure can be rolled in the horizontal direction of the imaging layer.

[0007] In the present application, by providing a continuously connected support structure extending in the vertical direction of the screen, the anti-bending deformation capability of the imaging layer is improved, thereby solving the bending deformation problem of the projection screen after being rolled up and unfolding, and improving the flatness of the projection screen. The support structure can be rolled up in the horizontal direction of the imaging layer, so that the formed projection screen can also be rolled up in the horizontal direction. The size of the projection screen rolled up in the horizontal direction is related to the wide side of the projection screen, and the size of the wide side of the screen is smaller than the length of the long side, thereby reducing the size of the projection screen after rolling up, which is convenient for packaging, transportation and carrying of the projection screen.

[0008] Further, the imaging layer is a white plastic screen, a metal screen, a glass bead screen, a wire grating screen, a photon screen, or a Fresnel optical screen.

[0009] In this application, the imaging layer can be various types of screens. By setting a support structure on various screens, the problem of bending deformation when the existing projection screen is unrolled after being rolled up can be effectively solved; the rolling size of the projection screen can also be reduced, thus facilitating the packaging, transportation, and carrying of the projection screen.

[0010] Further, the cross-section of the support structure is several arc surfaces, and the orientations of all arc surfaces are the same.

[0011] Further, the cross-section of the support structure is several arc surfaces, the adjacent arc surfaces have different orientations, and the spaced arc surfaces have the same orientation.

[0012] Further, the cross-section of the support structure is several arc surfaces, and the support structure is a one-layer or two-layer structure.

[0013] Further, the cross-section of the support structure is several serrations, the adjacent tooth tips have different orientations, and the spaced tooth tips have the same orientation.

[0014] Further, the cross-section of the support structure is several serrations, and the support structure is a one-layer or two-layer structural layer.

[0015] Further, the support structure is a hollow structure surrounded by sheets.

[0016] Further, the thickness of the support structure is greater than the thickness of the imaging layer.

[0017] Further, the projection screen can be rolled up along the horizontal direction of the imaging layer. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a schematic diagram of the length and width dimensions of a projection screen in the prior art;

[0019] Figure 2 is a schematic diagram of a projection screen in the prior art after being rolled up and then unrolled;

[0020] Figure 3 is a schematic diagram of the projection screen according to an embodiment of the present application;

[0021] Figure 4 is a schematic diagram of the projection screen according to an embodiment of the present application after being rolled up;

[0022] Figure 5 is a schematic diagram of the comparison of the lengths of the projection screen according to an embodiment of the present application and the projection screen in the prior art after being rolled up;

[0023] Figure 6 is a schematic diagram of a support structure according to an embodiment of the present application;

[0024] Figure 7 It is a schematic diagram of the second support structure according to an embodiment of the present application;

[0025] Figure 8 It is a schematic diagram of the third support structure according to an embodiment of the present application;

[0026] Figure 9 It is a schematic diagram of the fourth support structure according to an embodiment of the present application;

[0027] Figure 10 It is a schematic diagram of the fifth support structure according to an embodiment of the present application;

[0028] Figure 11 It is a schematic diagram of the sheet material enclosure according to an embodiment of the present application;

[0029] Figure 12 It is a schematic diagram of the dimensions of each part of the projection screen according to an embodiment of the present application;

[0030] Figure 13 It is a schematic diagram of a projection screen after installation according to an embodiment of the present application.

[0031] Among them, the meanings of the reference numerals in the figure are as follows:

[0032] 10 - Projection screen; 100 - Imaging layer; 200 - Support structure; 300 - Rewinding mechanism; 400 - Clamping mechanism; 1001 - Imaging display surface; 2001 - Curved surface; 2002 - Tooth tip; L - Long side length; y - Bending deformation; l - Wide side length; 1 - First layer; 2 - Second layer; H - Imaging layer thickness; h - Support structure thickness; P - Sheet material. Specific embodiments

[0033] The terms used in the embodiment part of the present application are only for explaining the specific embodiments of the present application, and are not intended to limit the present application.

[0034] Embodiment 1

[0035] Figure 3 It is a schematic diagram of the projection screen according to an embodiment of the present application.

[0036] As Figure 3 shown in Figure c in, the vertical and horizontal directions of the imaging layer 100 are defined as follows: when viewing the imaging layer face-to-face, within the plane of the imaging layer, the direction parallel to the width direction of the imaging layer is the vertical direction of the imaging layer; the direction parallel to the length direction of the imaging layer is the horizontal direction of the imaging layer.

[0037] As Figure 3As shown in Figure a, a projection screen includes a rollable imaging layer 100 and a support structure 200. The support structure 200 is disposed on a side of the imaging layer 100 away from the imaging display surface 1001. The support structure 200 is a plurality of strip-shaped structures with continuous connection and an arc-shaped cross section, and the strip-shaped structures extend along the vertical direction of the imaging layer 100.

[0038] As Figure 3 As shown in Figure b, a projection screen includes a rollable imaging layer 100 and a support structure 200. The support structure 200 is disposed on a side of the imaging layer 100 away from the imaging display surface 1001. The support structure 200 is a plurality of strip-shaped structures with continuous connection and a zigzag cross section, and the strip-shaped structures extend along the vertical direction of the imaging layer 100.

[0039] In the embodiment of the present application, by providing the support structure 200 with continuous connection extending along the vertical direction of the screen, the anti-bending deformation ability of the imaging layer 100 is improved, thereby solving the problem of bending deformation after the projection screen is unrolled, improving the flatness of the projection screen, and ensuring the imaging display effect.

[0040] Figure 4 This is a schematic diagram of the projection screen winding in the embodiment of the present application. The support structure 200 can be rolled along the horizontal direction of the imaging layer 100, and together with the rollable imaging layer 100, a rollable projection screen is formed. When winding, the imaging layer 100 can be wound on the inner layer (as Figure 4 shown); or the imaging layer 100 can be wound on the outer layer (not shown in the figure).

[0041] In the embodiment of the present application, the support structure 200 is rolled along the horizontal direction of the imaging layer, and is matched with the rollable imaging layer, so that the formed projection screen can also be rolled along the horizontal direction. Figure 5 This is a schematic diagram comparing the lengths of the projection screen after winding in the embodiment of the present application with that of the prior art after winding. As Figure 5 shown in Figure a, the length dimension of the projection screen 10 wound along the vertical direction is the long side length L; as Figure 5As shown in Figure B, the length dimension of the projection screen 10 wound horizontally (from the wide side) is the length l of the wide side. The length L of the long side of the projection screen is greater than the length l of the wide side. Therefore, the length dimension of the projection screen wound vertically is greater than the length dimension of the projection screen wound horizontally (from the wide side). Therefore, setting the projection screen 10 to wind horizontally (from the wide side) effectively reduces the size of the wound projection screen, facilitating the storage, transportation, and carrying of the projection screen. Further, the imaging layer 100 is used to image and display the light emitted by the projector. It is itself a complete form of a rollable projection screen, including the imaging display surface 1001 close to the projector. The imaging layer 100 can be a white plastic screen, a metal screen, a glass bead screen, a wire grating screen, a photon screen, or a Fresnel optical screen. These screens can also include functional layers such as a color layer, a diffusion layer, a reflection layer, and an optical microstructure layer, which are used to enhance the contrast of the projection screen, resist ambient light, and enhance brightness, etc.

[0042] For further explanation, whether these screens are a single functional structure layer (such as the diffuse reflection functional layer of a white plastic screen, the metal directional reflection layer of a metal screen, etc.) or multiple functional structure layers (such as the diffusion layer, color layer, Fresnel lens layer, reflection layer of a Fresnel optical screen, the reflection layer, light absorption layer, grating structure layer of a wire grating screen, etc.), bending deformation problems will also occur after winding and unfolding. Therefore, the solution of the present application can be applied to solve the bending deformation problem and meet the viewing requirements of the projection image, and all belong to the protection scope of the imaging layer of the solution of the present application.

[0043] In the embodiments of the present application, the imaging layer can be various types of screens. By setting a support structure extending vertically on various screens, the bending deformation problem of the existing projection screen after winding and unfolding can be effectively solved; it can also reduce the winding size of the projection screen, thus facilitating the packaging, transportation, and carrying of the projection screen.

[0044] Figures 6 to 10 It is a schematic diagram of the support structure of the embodiment of the present application.

[0045] As Figures 6 to 8 shown, the cross-section of the strip structure of the support structure 200 is an arc surface 2001, and several arc surfaces 2001 are continuously connected to form the cross-section of the support structure 200. As Figure 6 shown, the orientations of all arc surfaces 2001 can be kept the same; as Figure 7 shown, the orientations of adjacent arc surfaces 2001 are different, and the orientations of the spaced arc surfaces 2001 are the same. Whether the orientations of the arc surfaces 2001 are kept completely the same or the same at intervals, they can form a continuously connected support structure, so that the strip structures can also support each other, enhancing the anti-bending deformation strength of the support structure and ensuring the flatness of the screen.

[0046] In addition, in addition to being one of the structural layers in Figure 6 and Figure 7 , the support structure 200 can also be, as shown in Figure 8 , a superposition of two continuous arc surfaces. Figure 8 In , the first layer is marked with 1 and the second layer is marked with 2. By setting the two arc surfaces, the bending deformation resistance strength of the support structure 200 is further enhanced, and the flatness of the projection screen is improved.

[0047] Furthermore, as shown in Figure 9 and Figure 10 , the cross-section of the strip structure on the support structure 200 is serrated, and a number of serrations are continuously connected to form the cross-section of the support structure 200. As shown in Figure 9 , the cross-section of the support structure is a number of serrations, and the adjacent tooth tips 2002 face different directions, and the spaced tooth tips 2002 face the same direction. They form a continuously connected support structure 200, so that the strip structures support each other, enhancing the bending deformation resistance strength of the support structure 200 and ensuring the flatness of the projection screen.

[0048] In addition, in addition to being one of the structural layers in Figure 9 , the support structure 200 can also be, as shown in Figure 10 , a superposition of two continuous serrated surfaces. Figure 10 In , the first layer is marked with 1 and the second layer is marked with 2. By setting the two serrated surfaces, the bending deformation resistance strength of the support structure 200 is further enhanced, and the flatness of the projection screen is improved.

[0049] Figure 11 is a schematic diagram of the sheet material enclosure in the embodiment of the present application. The support structure 200 is in the form of a fence enclosed by the sheet material P. In this way, after the support structure 200 is arranged on the imaging layer 100, it is in line contact with the imaging layer 100 at intervals. After enclosing with the imaging layer, a hollow structural layer is formed on the screen. The sheet material itself has a certain thickness, and different sheet material thicknesses can be set to enhance the strength of the support structure.

[0050] Specifically, the sheet material can be selected from non-metallic materials such as PET, PC, PMMA, paper, etc., or common metallic materials such as aluminum, copper, etc., which is more convenient to implement and has higher practicality.

[0051] Figure 12 is a schematic diagram of the dimensions of each part of the projection screen in the embodiment of the present application. As shown in Figure 12 , the thickness of the support structure is marked as h, the thickness of the imaging layer is marked as H, and h is set to be greater than H. In this way, the support structure 200 can have a stronger effect on the flatness of the imaging layer 100, and a projection screen with better flatness can be obtained.

[0052] Further, the rollable imaging layer and the rollable support structure are combined so that the projection screen is also a rollable screen, and the rollable screen can also be rolled horizontally along the imaging layer.

[0053] In the embodiment of the present application, the support structure 200 can be pasted to the imaging layer through an elastic adhesive. That is to say, an elastic adhesive with a certain viscosity is provided between the imaging layer 100 and the support structure 200 to ensure that the support structure 200 and the imaging layer 100 are pasted together.

[0054] Specifically, the elastic adhesive has certain shrinkage and extension characteristics. During the winding process of the projection screen, the stress / tension between the imaging layer 100 and the support structure 200 is alleviated, and the bonding structure between the imaging layer 100 and the support structure 200 is prevented from being damaged.

[0055] More specifically, the elastic adhesive can be polyacrylic acid elastic adhesive, epoxy resin elastic adhesive, polyurethane elastic adhesive, silicone rubber elastic adhesive, EVA hot melt adhesive, polyamide hot melt adhesive, polyester hot melt adhesive, polyolefin hot melt adhesive, polyvinyl chloride plastic, polyvinyl acetate or chloroprene rubber, etc., which have strong viscosity by themselves and strong elastic stretching characteristics after curing, so as to ensure the shrinkage and extension characteristics of the elastic adhesive.

[0056] Further, an elastic material layer can also be provided on the surface of the support structure 200, and the elastic material layer has the functions of contraction and extension. During the winding process of the projection screen, when the elastic material layer is wound inside, the elastic material layer relies on its own shrinkage to release the curling stress; when the elastic material layer is wound outside, the elastic material layer relies on its own extensibility to release the winding tension, thereby eliminating the resistance of the elastic material layer to the winding of the screen. In addition, during the winding process of the projection screen, the elastic material layer also acts as a protective layer function to prevent the projection screen from being scratched.

[0057] As a specific example, the material of the elastic material layer can be one or a combination of flexible film materials such as polyurethane film, polyethylene film, polypropylene film, polyamide film, polypropylene film, polystyrene film, styrene film, silicone film, TPU film, polyvinyl chloride film, chloroprene rubber film, ethylene-propylene rubber film, plasticized polyolefin film, chlorosulfonated polyethylene film, chlorinated polyethylene film, butene rubber film, thermoplastic synthetic rubber film, chloromethyl ether rubber film, etc. That is, there are many raw materials available for making the elastic material layer, and it is not limited to certain raw materials. In actual use, some relatively inexpensive ones can be selected as much as possible to control the production cost of the entire projection screen.

[0058] Figure 13Schematic diagram after installation of a projection screen according to an embodiment of the present application. A projection screen includes an imaging layer 100, a support structure 200, a winding mechanism 300, and a clamping mechanism 400; the winding mechanism 300 and the clamping mechanism 400 are disposed on opposite sides of the imaging layer 100 and wrap the corresponding edges of the imaging layer 100; the extending directions of the winding structure 300 and the clamping mechanism 400 are the same as the extending direction of the strip-shaped structure constituting the support structure 200.

[0059] A winding shaft is provided in the winding mechanism 300 to facilitate the winding and unwinding of the projection screen. The clamping structure 400 is used for the unfolding installation and winding limit of the projection screen.

[0060] Specifically, the winding mechanism can be manual or electric, and can also be used as a hanger for installing the projection screen; the clamping mechanism itself also has a certain bending strength, which can further promote the flatness of the projection screen after installation.

[0061] The winding shaft in the winding mechanism can be circular and used as a core to wind the projection screen into a cylindrical shape; it can also be rectangular to clamp the projection screen on the winding shaft. Of course, the winding shaft can also be of other shapes, as long as the functions are the same, they can all be considered to fall within the scope of the present application.

[0062] The clamping mechanism can be circular, square, or of other shapes, and can be connected to the screen by clamping, pasting, nailing, etc.

[0063] As a specific example, the projector can be any one of a long-focus projector, a short-focus projector, and an ultra-short-focus projector; the light source of the projector can be a laser light source, an LED light source, and the laser light source can be a single-color laser, a two-color laser, or a three-color laser.

[0064] The above are only the preferred embodiments of the present invention and are not used to limit the present invention. For those skilled in the art, the present invention can have various changes and modifications. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A projection screen, comprising a rollable imaging layer and a supporting structure, wherein the supporting structure is arranged on a side of the imaging layer away from an imaging display surface, characterized in that: The support structure is a plurality of continuously connected strip structures with arc-shaped or sawtooth-shaped cross sections. The strip structures extend along the vertical direction of the imaging layer, and the support structure can be curled along the horizontal direction of the imaging layer.

2. The projection screen according to claim 1, characterized in that: The imaging layer is a white plastic screen, a metal screen, a glass bead screen, a line grating screen, a photon screen or a Fresnel optical screen.

3. The projection screen according to claim 1, characterized in that: The cross section of the support structure is a plurality of arc surfaces, and the orientations of the arc surfaces are consistent.

4. The projection screen according to claim 1, characterized in that The cross section of the support structure is a plurality of arc surfaces, adjacent arc surfaces have different orientations, and the orientations of the spaced arc surfaces are consistent.

5. The projection screen according to claim 3 or 4, characterized in that: The supporting structure is a one-layer or two-layer structure.

6. The projection screen according to claim 1, characterized in that: The cross section of the support structure is a plurality of sawtooth shapes, the adjacent tooth tips are oriented in different directions, and the spaced tooth tips are oriented in the same direction.

7. The projection screen according to claim 6, characterized in that The supporting structure is a one-layer or two-layer structure.

8. The projection screen according to claim 1, characterized in that The supporting structure is a hollow structure surrounded by sheets.

9. The projection screen according to claim 1, characterized in that: The thickness of the support structure is greater than the thickness of the imaging layer.

10. The projection screen according to claim 1, characterized in that: The projection screen is rollable in a horizontal direction along the imaging layer.

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