Screen reinforcement structure and projection screen formed by same

Abstract

A screen reinforcement structure (1000) and a projection screen. The screen reinforcement structure (1000) comprises a number of reinforcing parts (1100) which are connected to one another, each reinforcing part (1100) comprising a reinforcing unit (1200), and the reinforcing units (1200) being arc-shaped plates; arc-shaped tops of the reinforcing units (1200) serve as supporting parts (1210) and are distributed at intervals to combine to form a bearing surface, in order to support an imaging display surface of the projection screen; a flattening force is produced in the extension direction of the arc-shaped tops, so that deformation problems such as edge curling and bending on the imaging display surface are avoided.

Description

A screen reinforcement structure and projection screen composed of the same

[0001] This application claims priority to the following nine Chinese patent applications, the entire contents of which are incorporated herein by reference.

[0002] 1. Application number 202322340655.0, filed with the China Patent Office on August 30, 2023, titled “A reinforcement structure for a screen and a projection screen composed thereof”;

[0003] 2. Application number 202322340637.2, filed with the China Patent Office on August 30, 2023, titled “A reinforcement structure for a screen and a projection screen composed thereof”;

[0004] 3. Submitted to the China Patent Office on August 30, 2023, application number 202322340658.4, application name “A portable projection screen”;

[0005] 4. Application number 202322340629.8, filed with the China Patent Office on August 30, 2023, titled “Anti-curling electric projection screen”;

[0006] 5. Application number 202322340654.6, filed with the China Patent Office on August 30, 2023, titled “A Ground-Lifting Projection Screen”;

[0007] 6. Application number 202322340642.3, filed with the China Patent Office on August 30, 2023, titled “A Simple Projection Screen”;

[0008] 7. Submitted to the China Patent Office on August 30, 2023, application number 202322340666.9, application name “A bracket projection screen”;

[0009] 8. Application number 202322340669.2, filed with the China Patent Office on August 30, 2023, titled “A Frame Projection Screen”;

[0010] 9. Submitted to the China Patent Office on August 30, 2023, application number 202322340626.4, application name "A multi-purpose projection screen". Technical Field

[0011] The present application relates to the field of display technology, and in particular to a screen reinforcement structure and a projection screen composed thereof. Background Art

[0012] The flatness of the projection screen's imaging display surface is crucial to the quality of the projection screen's projection performance. Curling or bending the projection screen's imaging display surface can cause overall or partial distortion of the displayed image, severely impacting the user's viewing experience.

[0013] For a rollable screen, traction is typically applied in the direction of reeling and unrolling to flatten the screen. For example, when the screen is rolled up and unrolled vertically, the upper end of the screen is typically connected to the reeling mechanism, and the lower end is connected to a counterweight. After the screen is unfolded, the counterweight applies vertical force to the screen, relying on the weight of the counterweight to flatten it. Because the weight of the counterweight primarily flattens the screen in the vertical direction, while the horizontal effect is minimal, the screen still experiences deformation issues such as curling and bending in the horizontal direction (along the reeling axis), affecting the flatness of the image display surface and, in turn, the display quality.

[0014] Summary of the Invention

[0015] In order to solve the above technical problems, the present application discloses a reinforcement structure for a screen, which can enable the imaging display surface of the projection screen to be well stretched, avoiding curling, bending, etc., thereby ensuring the flatness of the imaging display surface and avoiding overall or partial deformation of the displayed image.

[0016] The specific technical solutions of this application are as follows:

[0017] A reinforcement structure for a screen comprises: a plurality of mutually connected reinforcement parts, wherein the reinforcement parts comprise reinforcement units, and the reinforcement units are in the shape of arc plates. The arc tops of the reinforcement units serve as support parts and are distributed at intervals to form a bearing surface.

[0018] Since the curved tops of all the reinforcing units form a bearing surface, it can be seen that each curved top is in contact with the screen. On the basis of ensuring the stability of the force in the extension direction through the curved top, deformation problems such as curling and bending in this direction of the imaging display surface can be avoided.

[0019] Preferably, the bearing surface includes a flat surface and a curved surface, or a combination thereof.

[0020] Preferably, any two adjacent reinforcement units are connected via a connecting piece.

[0021] Preferably, any two adjacent reinforcing units are connected via an inverted arc-shaped reinforcing unit.

[0022] Preferably, any reinforcement unit is connected to an adjacent inverted arc-shaped reinforcement unit via a straight line.

[0023] Preferably, the extending directions of the arc-shaped tops of all the reinforcing units are parallel to each other to form a rollable bearing surface.

[0024] The curved tops of all reinforcement units extend in parallel directions, meaning the support portions formed by the curved tops of all reinforcement units are parallel. This ensures that the supporting forces exerted by the support portions of all reinforcement units on the screen are parallel, providing a relatively uniform supporting force. This ensures that the reinforcement structure remains effectively connected to the screen in its normal position, maintaining the flatness of the screen's display surface. This is particularly beneficial for flexible, rollable screens, facilitating uniform winding and storage, and preventing creases caused by excessive bending in certain areas.

[0025] The present application also provides a projection screen, comprising an imaging display layer and the aforementioned screen reinforcement structure, wherein the screen reinforcement structure is arranged on a side of the imaging display surface away from the imaging display layer.

[0026] The screen reinforcement structure is positioned on a side of the imaging display surface away from the imaging display layer, preventing it from affecting the image on the imaging display surface. Furthermore, the screen reinforcement structure allows the imaging display layer to stretch well, preventing curling or bending, thereby ensuring the flatness of the imaging display surface and preventing overall or partial distortion of the displayed image.

[0027] Preferably, the size coverage of the screen reinforcement structure is greater than or equal to 80% of the imaging display surface area of ​​the imaging display layer.

[0028] Preferably, the height of the screen reinforcement structure is less than or equal to 1% of the display width of the imaging display layer.

[0029] The specific ratio between the screen reinforcement structure and the display width of the imaging display layer facilitates the control of the screen reinforcement structure and the production of projection screens of various sizes. The height of the screen reinforcement structure is controlled to be less than or equal to 1% of the display width of the imaging display layer, thereby ensuring the stability of the connection between the screen reinforcement structure and the imaging display layer.

[0030] Preferably, a cushion layer is provided on a side of the screen reinforcement structure away from the imaging display layer; and a base material layer is provided on a side of the screen reinforcement structure close to the imaging display layer.

[0031] Compared with the prior art, the present application adopts the arc-shaped plate structure design of the reinforcing unit so that the arc-shaped top of the reinforcing unit forms a bearing surface, so that the imaging display surface of the projection screen is supported, thereby being affected by the reinforcing structure of the screen and obtaining a flattening force in the extension direction of the arc-shaped top, thereby avoiding deformation problems such as curling and bending on the imaging display surface.

[0032] A portable projection screen comprising:

[0033] a rollable curtain sheet, a first crossbar, and a second crossbar;

[0034] The first cross bar and the second cross bar are respectively arranged on two opposite sides of the screen piece;

[0035] The first crossbar is used to keep the screen straight and the portable projection screen mounted in position;

[0036] The second cross bar tensions the screen in the vertical direction;

[0037] The bearing surface is used to bear the screen piece;

[0038] The screen piece includes an imaging display surface, the reinforcing unit is arranged on a side away from the imaging display surface, and the screen piece is connected to the bearing surface.

[0039] The screen piece is rollable, which is convenient for rolling up and unrolling the portable projection screen. When needed, it can be unfolded for projection, and when not needed, it can be rolled up for transportation and carrying. During the rolling and unrolling process, the screen piece has a rolling axis direction.

[0040] An anti-curling electric projection screen, comprising:

[0041] Box body, rollable curtain sheet, counterweight rod;

[0042] The box body is provided with a reel mechanism and a motor, the reel mechanism includes a reeling rod, and the motor is connected to one end of the reeling rod;

[0043] One side of the curtain sheet is connected to the reeling rod, and the other side is connected to the counterweight rod;

[0044] The bearing surface is used to bear the screen piece;

[0045] The screen piece includes an imaging display surface, and the screen piece is connected to the carrying surface on a side away from the imaging display surface.

[0046] The housing houses a reel mechanism and a motor. The reel mechanism includes a reel rod, one end of which is connected to the motor. The motor provides power for reeling and unreeling the electric projection screen, and the reel rod is primarily used to reel in the screen. The other side of the screen is connected to a counterweight rod, which provides gravity for the screen to unfold, keeping it flat in the vertical direction.

[0047] A floor-lift projection screen comprises: a base, a rollable screen, a lifting mechanism and an upper crossbeam; the base is provided with a reel mechanism, the reel mechanism comprising a reeling rod, the reeling rod being connected to one side of the screen, the other side of the screen being connected to the upper crossbeam; one end of the lifting structure is connected to the upper crossbeam, and the other end is connected to the base; the bearing surface is used to bear the screen; the screen comprises an imaging display surface, and the screen is connected to the bearing surface on a side away from the imaging display surface.

[0048] A simple projection screen includes: a rollable screen, an upper crossbar, a lower crossbar, a left clamping frame, and a right clamping frame. The upper crossbar and the lower crossbar are respectively arranged on opposite sides of the rollable screen. The upper crossbar is used to keep the rollable screen straight and to hang the screen. The lower crossbar is used to provide gravity to tension the screen in the vertical direction. The left clamping frame and the right clamping frame are respectively arranged on the other two opposite sides of the rollable screen to clamp the two sides of the screen to maintain the stability and appearance of the screen. The rollable screen includes an imaging display surface, and the side of the rollable screen away from the imaging display surface is connected to the supporting surface.

[0049] A bracket projection screen includes: a support base, a telescopic assembly, a clamping assembly, and a rollable screen piece. The telescopic assembly is detachably mounted on the support base. The telescopic assembly includes a telescopic rod with adjustable length. The clamping assembly is connected to one end of the telescopic rod. The rollable screen piece is mounted on the clamping assembly. The rollable screen piece includes an imaging display surface. The side of the rollable screen piece that is away from the imaging display surface is connected to the bearing surface.

[0050] A frame projection screen comprises: an inner frame, an outer frame, connecting corner pieces, a screen fastening mechanism, and a rollable screen. The inner frame is connected to form a rectangle via the connecting corner pieces. The rollable screen is tensioned on the rectangular inner frame via the screen fastening mechanism. The outer frame is nested in the rectangular inner frame. The rollable screen includes an imaging display surface, and a surface of the rollable screen away from the imaging display surface is connected to the supporting surface.

[0051] A multi-purpose projection screen includes: a rollable screen and a rotating mechanism; the rollable screen includes an imaging display surface, a side of the rollable screen remote from the imaging display surface is connected to the bearing surface, the rotating mechanism is provided with a gear shaft, the tooth profile of the gear shaft complements the reinforcement structure, the rollable screen is nested outside the gear shaft, and the rotating mechanism drives the rollable screen to perform circular motion via the gear shaft.

[0052] A reinforcement structure for a screen comprises: a plurality of mutually connected reinforcement units, wherein the reinforcement units are in the shape of arc plates, the reinforcement units are connected to form a plurality of support parts, and the support parts are distributed at intervals to form a bearing surface.

[0053] Preferably, the supporting portion is the arc-shaped top portion of the reinforcing unit.

[0054] Preferably, the supporting portion is a connecting portion between any two adjacent reinforcing units.

[0055] The present application also provides a projection screen, comprising an imaging display layer and the aforementioned screen reinforcement structure, wherein the screen reinforcement structure is arranged on a side away from the imaging display layer.

[0056] Compared with the prior art, the present application sets the reinforcement units in the shape of arc plates and all the reinforcement units are interconnected into one body, and the load-bearing surfaces formed by them are distributed at intervals. On the one hand, the reinforcement structure as a whole can be curled arbitrarily along the non-structural extension direction, so that the constructed projection screen can also be curled; on the other hand, it has stronger bending resistance in the extension direction of the reinforcement structure. Each of the interconnected reinforcement units is in contact with the screen for support, providing bending resistance for the projection screen in its extension direction, which can avoid deformation problems such as curling and bending on the imaging display surface of the projection screen in this direction. BRIEF DESCRIPTION OF THE DRAWINGS

[0057] FIG1 is a schematic diagram of a reinforcement structure for a screen in Example 1;

[0058] FIG2 is a schematic diagram of the enhancement unit in Example 1;

[0059] FIG3 is a schematic diagram of the support portion of the reinforcing unit in Example 1;

[0060] FIG4 is a schematic diagram of the connection between adjacent reinforcement units in Example 1;

[0061] FIG5 is a schematic diagram showing the connection between the reinforcing unit and the adjacent inverted arc-shaped reinforcing unit in Example 1;

[0062] FIG6 is a perspective view of the reinforcement structure for the screen in Example 1;

[0063] FIG7 is a schematic diagram of the parameters of the screen reinforcement structure in Example 1;

[0064] FIG8 is another schematic diagram of the reinforcement structure for the screen in Example 1;

[0065] FIG9 is a first schematic diagram of Example 2;

[0066] FIG10 is a second schematic diagram of Example 2;

[0067] FIG11 is a third schematic diagram of Example 2;

[0068] FIG12 is a fourth schematic diagram of Example 2;

[0069] FIG13 is a schematic diagram of the projection screen being rolled up in the forward direction in Example 2;

[0070] FIG14 is a schematic diagram of the reverse rolling of the projection screen in Example 2;

[0071] FIG15 is a schematic diagram of a reinforcement structure for a screen in Example 3;

[0072] FIG16 is a schematic diagram of the support portion of the reinforcing unit in Example 3;

[0073] FIG17 is a schematic diagram of a connection between adjacent reinforcement units in Example 3;

[0074] FIG18 is another schematic diagram of connecting adjacent reinforcement units in Example 3;

[0075] FIG19 is a perspective view of a reinforcement structure for a screen in Example 3;

[0076] FIG20 is a schematic diagram of the parameters of the screen reinforcement structure in Example 3;

[0077] FIG21 is another schematic diagram of a reinforcement structure for a screen in Example 3;

[0078] FIG22 is a first schematic diagram of Example 4;

[0079] FIG23 is a second schematic diagram of Example 4;

[0080] FIG24 is a third schematic diagram of Example 4;

[0081] FIG25 is a fourth schematic diagram of Example 4;

[0082] FIG26 is a schematic diagram of the projection screen being rolled up in the forward direction in Example 4;

[0083] FIG27 is a schematic diagram of the reverse rolling of the projection screen in Example 4;

[0084] FIG28 is a schematic diagram of a projection screen in Example 5;

[0085] Figure 29 is a schematic diagram of Example 6;

[0086] FIG30 is a cross-sectional view taken along line AA of FIG29;

[0087] Figure 31 is a schematic diagram of Example 7 after unwinding;

[0088] Figure 32 is a side view of Figure 31;

[0089] FIG33 is a partial enlarged view of A in FIG32;

[0090] FIG34 is a partial enlarged view of the screen sheet unwinding on the side away from the reeling rod;

[0091] FIG35 is a schematic diagram of a ground-lift projection screen;

[0092] Figure 36 is a partial enlarged view of the interior of the box;

[0093] FIG37 is a front view of the projection screen structure of Example 9 of the present application;

[0094] FIG38 is a 3D schematic diagram of the unfolded projection screen structure of Example 9 of the present application;

[0095] FIG39 is a front view of the projection screen installation according to the ninth embodiment of the present application;

[0096] FIG40 is a front view of the projection screen structure according to the tenth embodiment of the present application;

[0097] FIG41 is a schematic diagram of a clamping assembly according to the tenth embodiment of the present application;

[0098] FIG42 is a schematic diagram showing the connection between the support base, the telescopic assembly and the clamping assembly according to the tenth embodiment of the present application;

[0099] FIG43 is a schematic diagram of the back side of the projection screen structure according to the eleventh embodiment of the present application;

[0100] FIG44 is an exploded schematic diagram of the frame structure of Example 11 of the present application;

[0101] FIG45 is a schematic diagram of a screen fastening mechanism according to the eleventh embodiment of the present application;

[0102] FIG46 is a schematic diagram of the projection screen structure of the twelfth embodiment of the present application;

[0103] FIG47 is a schematic diagram of a rotating mechanism according to an embodiment of the present application;

[0104] FIG48 is a schematic diagram of another rotating mechanism according to an embodiment of the present application;

[0105] FIG49 is a schematic diagram of another rotating mechanism according to an embodiment of the present application;

[0106] FIG50 is a schematic diagram of another rotating mechanism according to an embodiment of the present application;

[0107] FIG51 is a schematic cross-sectional view of a projection screen according to an embodiment of the present application;

[0108] Figure 52 is a schematic cross-sectional view of another projection screen according to an embodiment of the present application.

[0109] In Figures 1 to 28: 1000 - screen reinforcement structure; 1100 - reinforcement portion; 1200 - reinforcement unit; 1210 - support portion; 1300 - inverted arc-shaped reinforcement unit; 1400 - plate-like structure; 2000 - imaging display layer; 3000 - cushion layer; 4000 - substrate layer;

[0110] In Figures 29 and 30: 20001 - screen piece; 3100 - first crossbar; 3200 - second crossbar;

[0111] In Figures 31 to 34: 30001 - box body; 40001 - counterweight rod; 5000 - reeling rod;

[0112] In Figures 35 and 36: 30002 - upper beam; 40002 - lifting mechanism; 50001 - base;

[0113] In Figures 37 to 39: 10 - projection screen; 300 - upper crossbar; 400 - lower crossbar; 500 - left clamping frame; 600 - right clamping frame; 2 - mounting hole; 3 - slot;

[0114] In Figures 40 to 42: 3001 - support base; 4001 - telescopic assembly; 5001 - clamping assembly; 501 - upper beam; 502 - lower beam; 503 - curved arm;

[0115] In Figures 43 to 45: 3002 - inner frame; 4002 - outer frame; 5002 - curtain plate fastening mechanism; 5010 - clamping plate; 5020 - screw; 5030 - accommodating chamber 1; 5040 - accommodating chamber 2; 6001 - connecting corner piece;

[0116] In Figures 46 to 52: 10012 - Fresnel screen; 10022 - white plastic screen; 10032 - painting; 3003 - rotating mechanism; 301 - gear shaft; 302 - motor; 303 - rocker; 304 - end cover. DETAILED DESCRIPTION

[0117] In order to enable those skilled in the art to better understand the technical solution of the present application, the present application is further described in detail below in conjunction with specific implementation methods.

[0118] Example 1

[0119] As shown in Figures 1 to 8 , a screen reinforcement structure 1000 includes a plurality of interconnected reinforcement sections 1100. Specifically, the screen reinforcement structure 1000 includes at least two reinforcement sections 1100. Adjacent reinforcement sections 1100 may be interconnected or connected via other structures. Therefore, the reinforcement sections 1100 are not isolated but continuous, thereby ensuring the continuity of the screen reinforcement structure 1000, preventing localized shaking or twisting, and ensuring the long-term stability of the screen reinforcement structure 1000.

[0120] In this embodiment, several reinforcement parts 1100 can be exactly the same, that is, the shape, size and appearance of the reinforcement parts 1100 are consistent. This is more conducive to the processing and molding of the screen reinforcement structure 1000 and reduces production costs.

[0121] The reinforcing portion 1100 includes a reinforcing unit 1200, which is an arc-shaped plate structure. The arc-shaped top of the reinforcing unit 1200 serves as a supporting portion 1210. The supporting portions 1210 are distributed at intervals, and the supporting portions 1210 are combined to form a bearing surface; that is, the bearing surface is composed of the arc-shaped top of the reinforcing unit 1200 as the supporting portion 1210. Then, when the screen reinforcement structure 1000 is used to support the screen, the arc-shaped top of each reinforcing unit 1200 contacts the screen, and the arc-shaped top of each reinforcing unit 1200 ensures that the force in the extension direction of the arc-shaped top is stable, thereby avoiding deformation problems such as curling and bending of the screen in this direction when the screen is supported.

[0122] In this embodiment, when the multiple reinforcement sections 1100 are completely identical, the support sections 1210 of the reinforcement units 1200 of the reinforcement sections 1100 are also completely identical. This helps ensure uniform support force from the screen reinforcement structure 1000 and maintains the flatness of the screen when unfolded. For flexible, rollable projection screens, this facilitates uniform winding and storage, avoiding excessive bending and creases.

[0123] In this embodiment, when the projection screen formed by the reinforcement structure 1000 is rolled up along a certain rolling axis, that is, the formed projection screen has a rolling axis direction, then the extension direction of the arc-shaped plate structure of the reinforcement unit 1200 is consistent with the rolling axis direction. This is beneficial to the rolling and unrolling operations of the entire projection screen, and further improves the flatness of the projection screen in the rolling axis direction.

[0124] In this embodiment, the supporting surface can be a flat surface, a curved surface, or a combination of a flat surface and a curved surface. In other words, the projection surface of the projection screen can be a flat surface, a curved surface, or a combination of a flat surface and a curved surface. It should be emphasized that this embodiment can be used to support different screens to form a projection screen to meet different user needs.

[0125] In this embodiment, any two adjacent reinforcement units 1200 can be connected by a connector, that is, the reinforcement units 1200 are not isolated from each other, but are connected to form a whole through the connector, thereby realizing the continuity of the reinforcement structure 1000 for the screen, avoiding the separation of the reinforcement unit 1200 from the screen due to shaking / twisting of the reinforcement unit 1200 with an arc-shaped plate structure, thereby maintaining a long-term and stable connection between the screen and the reinforcement unit 1200, and the flatness of the connection between the arc-shaped plate structure and the screen.

[0126] In this embodiment, as shown in FIG4 , any two adjacent reinforcement units 1200 are connected by an inverted arc-shaped reinforcement unit 1300. In other words, the aforementioned connecting member is an inverted arc-shaped reinforcement unit 1300. The inverted arc-shaped reinforcement unit 1300 provides a transitional connection between any two adjacent reinforcement units 1200, maintaining the stability of the curved plate-like reinforcement units 1200. The alternating arrangement of reinforcement units 1200 and inverted arc-shaped reinforcement units 1300 ensures the continuity of the screen reinforcement structure 1000, thereby ensuring the straightness and bending resistance of the connection when the screen reinforcement structure 1000 is used to form a projection screen. This prevents the instability of the screen reinforcement structure 1000 due to localized shaking or twisting of the reinforcement units 1200, thereby maintaining the long-term stability of the screen reinforcement structure 1000 and ensuring the long-term stability of the support when forming a projection screen.

[0127] In this embodiment, the reinforcing unit 1200 is an arc-shaped plate-like structure, and the inverted arc-shaped reinforcing unit 1300 is used to connect adjacent reinforcing units 1200. The inverted arc-shaped reinforcing unit 1300 is an inverted arc-shaped plate-like structure and is compatible with the reinforcing unit 1200.

[0128] In this embodiment, the screen reinforcement structure 1000 can be formed by bending a plastic or inorganic fiber-reinforced sheet material into a continuous arrangement through positive and negative arc bending. Specifically, the screen reinforcement structure 1000 is fabricated from a single piece of sheet material. This simplifies the manufacturing process while ensuring flatness and stability, resulting in a high degree of lightweighting and weight reduction. Forming the screen reinforcement structure 1000 through sheet bending requires less structural strength. The positive and negative arc bending process strengthens the originally weak sheet material to impart a certain degree of bending resistance. This satisfies the requirements for the screen reinforcement structure 1000, resulting in a simple structure, ease of fabrication, and relatively low cost.

[0129] In this embodiment, the shape and size of the reinforcing units 1200 are completely consistent. That is, when the sheet is bent in a forward and reverse arc shape, the shape and size of the reinforcing units 1200 formed are consistent. In this way, the supporting portions 1210 of the reinforcing units 1200 are also completely consistent. This ensures uniform supporting force and facilitates continuous processing and manufacturing of the reinforcing units 1200, thereby reducing production costs.

[0130] In this embodiment, the shape and size of the reinforcing units 1200 are completely consistent, and the shape and size of the inverted arc-shaped reinforcing units 1300 serving as connecting parts of adjacent reinforcing units 1200 can also be kept consistent. In this way, the processing and manufacturing process is further optimized and the processing difficulty and cost are reduced.

[0131] In this embodiment, the shapes and dimensions of the reinforcement units 1200 are identical, as are the shapes and dimensions of the inverted arc-shaped reinforcement units 1300, which serve as connectors between adjacent reinforcement units 1200. The reinforcement units 1200 are centrally symmetrical with the adjacent inverted arc-shaped reinforcement units 1300. This arrangement further optimizes the batch and continuous manufacturing process, reducing the difficulty and cost of manufacturing the reinforcement structure 1000.

[0132] As can be seen from Figure 1, the entire screen is formed into a continuous wave shape using reinforcement structure 1000. The shape and size of reinforcement unit 1200 are not unique; that is, the parameters of reinforcement unit 1200 are not limited. Even the parameters of inverted arc-shaped reinforcement unit 1300 are not unique. As long as the supporting surfaces formed by support portions 1210 of reinforcement unit 1200 are located in the same plane, the aforementioned effect can be achieved.

[0133] In this embodiment, any reinforcement unit 1200 can be connected to an adjacent inverted arc-shaped reinforcement unit 1300 via a straight line. That is, the reinforcement unit 1200 and the adjacent inverted arc-shaped reinforcement unit 1300 are connected via a plate-like structure 1400, which, when viewed from the side, appears as a straight line segment. This simplifies the connection between the reinforcement unit 1200 and the adjacent inverted arc-shaped reinforcement unit 1300.

[0134] In this embodiment, the curved tops of all the reinforcement units 1200 extend in parallel directions, forming a rollable support surface. This means that the curved tops of all the reinforcement units 1200 extend in parallel directions, meaning that the support portions 1210 formed by the curved tops of all the reinforcement units 1200 are parallel to each other. This ensures that the supporting forces exerted by the support portions 1210 of all the reinforcement units 1200 are parallel, facilitating a relatively uniform supporting force and ensuring that the reinforcement structure 1000 effectively supports the projection screen regardless of its state.

[0135] In this embodiment, as shown in Figure 7, combined with the aforementioned diagram, the center distance between the arc-shaped tops of adjacent reinforcing units 1200 is taken as the wavelength P, and the vertical distance from the arc-shaped top of the reinforcing unit 1200 to the arc-shaped bottom of the inverted arc-shaped reinforcing unit 1300, that is, the farthest vertical distance between the reinforcing unit 1200 and the adjacent inverted arc-shaped reinforcing unit 1300 in the vertical direction is taken as the height h, and the wavelength P is set to 0.5 to 2 times the height h.

[0136] Specifically, the proportional relationship between wavelength P and height h facilitates the control of various parameters during the manufacturing process of the screen reinforcement structure 1000, such as effectively setting the pitch and arch height of the reinforcement units 1200 and inverted arc-shaped reinforcement units 1300 within the screen reinforcement structure 1000. Furthermore, by controlling the proportional relationship between wavelength P and height h, the supporting force of the support portions 1210 of the reinforcement units 1200 is enhanced, thereby strengthening the supporting force of the entire screen reinforcement structure 1000, thereby improving the flatness of the imaging display surface of the projection screen formed thereby. When wavelength P is less than 0.5 times the height h, the distance between adjacent reinforcement units 1200 is too small, increasing the difficulty of manufacturing. When wavelength P is greater than 2 times the height h, the number of reinforcement units 1200 is relatively small, and thus the number of support portions 1210 is correspondingly small, which may affect the flatness of the imaging display surface of the projection screen formed thereby.

[0137] In this embodiment, as shown in FIG7 , the shapes and sizes of the reinforcing units 1200 are exactly the same, and when the shapes and sizes of the inverted arc-shaped reinforcing units 1300 serving as the connecting parts of adjacent reinforcing units 1200 are exactly the same, the distances from the arc tops of the adjacent reinforcing units 1200 to the wavelength P are the same, and the farthest vertical distance in the vertical direction between the reinforcing units 1200 and the adjacent inverted arc-shaped reinforcing units 1300, i.e., the height h, is also the same.

[0138] In this embodiment, the reinforcement portions 1100 of the screen reinforcement structure 1000 can be non-uniform. That is, the configuration of each reinforcement unit 1200 is not unique. It is sufficient to maintain the bearing surfaces formed by the support portions 1210 of the reinforcement units 1200 within the same plane. As shown in FIG8 , the height h of the screen reinforcement structure 1000 can gradually increase or decrease along a single direction. Of course, the bearing surfaces formed by the support portions 1210 of the reinforcement units 1200 must always remain within the same plane to achieve the aforementioned anti-bending effect. Furthermore, the wavelength P can also gradually decrease or increase along a single direction. The bearing surfaces formed by the support portions 1210 of the reinforcement units 1200 must still remain within the same plane to achieve the aforementioned anti-bending effect.

[0139] In other words, the height h and wavelength P of the screen reinforcement structure 1000 can be exactly the same; the height h can vary along a single direction while the wavelength P remains constant; the height h can remain constant while the wavelength P varies along a single direction; or both the wavelength P and the height h can vary. Regardless of how the height h varies, the bearing surface formed by the support portion 1210 of the reinforcement unit 1200 remains in the same plane, achieving the anti-bending effect of the screen reinforcement structure 1000.

[0140] Example 2

[0141] FIG9 is a schematic diagram of the first embodiment of Example 2. The projection screen includes an imaging display layer 2000 and the screen reinforcement structure 1000 described in Example 1. The screen reinforcement structure 1000 is disposed on a side away from the imaging display surface of the imaging display layer 2000. That is, the screen reinforcement structure 1000 is connected to the non-imaging display surface of the imaging display layer 2000, thereby preventing any interference with the imaging display surface. The support portion 1210 of the reinforcement unit 1200 in the screen reinforcement structure 1000 is connected to the imaging display layer 2000. Here, the imaging display layer 2000 is the screen described in Example 1, and together with the screen reinforcement structure 1000, it forms the projection screen. The size of the screen reinforcement structure 1000 is compatible with the size of the imaging display layer 2000. This allows the screen reinforcement structure 1000 to provide sufficient stretch for the imaging display layer 2000, preventing curling or bending, thereby ensuring the flatness of the imaging display surface and preventing overall or partial deformation of the displayed image.

[0142] In this embodiment, the connection between the screen reinforcement structure 1000 and the non-imaging display surface of the imaging display layer 2000 can be achieved by bonding or other methods.

[0143] As shown in FIG10 , the difference from FIG9 is that in the projection screen, the area of ​​the screen reinforcement structure 1000 is smaller than the area of ​​the imaging display layer 2000, and the size of the screen reinforcement structure 1000 covers greater than or equal to 80% of the imaging display surface area of ​​the imaging display layer 2000. This arrangement ensures that the screen reinforcement structure 1000 provides overall support for the imaging display layer 2000, avoiding the situation where the screen reinforcement structure 1000 is too small and thus lacks sufficient support for the imaging display layer 2000.

[0144] In this embodiment, the height h of the screen reinforcement structure 1000 is less than or equal to 1% of the display width of the imaging display layer 2000. In this way, while ensuring the stability of the connection between the screen reinforcement structure 1000 and the imaging display layer 2000, the manufacturing and production of the screen reinforcement structure 1000 and projection screens of various sizes are controlled.

[0145] In this embodiment, the height h is optimized, that is, the arch height of the reinforcing unit 1200 and the inverted arc-shaped reinforcing unit 1300 is controlled to avoid the maximum vertical distance between the reinforcing unit 1200 and the inverted arc-shaped reinforcing unit 1300 being too large, which may lead to the emergence of instability factors.

[0146] As shown in Figure 11 , in addition to the structure shown in Figure 9 , the projection screen also includes a cushioning layer 3000 , which is positioned on the side of the screen reinforcement structure 1000 away from the imaging display layer 2000. During the reeling and unreeling process, the cushioning layer 3000 provides protection. When reeling, it prevents the screen reinforcement structure 1000 from directly pressing against the imaging display layer 2000, primarily protecting the imaging display layer 2000. When unreeling, it prevents the screen reinforcement structure 1000 from deformation due to external forces, primarily protecting the screen reinforcement structure 1000.

[0147] As shown in Figure 12 , based on Figure 11 , the projection screen further includes a substrate layer 4000. This substrate layer 4000 is positioned on the side of the screen reinforcement structure 1000 that is closest to the imaging display layer 2000. Specifically, the substrate layer 4000 is positioned between the screen reinforcement structure 1000 and the imaging display layer 2000. The combination of the imaging display layer 2000 and substrate layer 4000 can be considered the screen described in Example 1, which, together with the screen reinforcement structure 1000 and the cushioning layer 3000, forms a complete projection screen. The provision of substrate layer 4000 facilitates a smoother, flatter imaging display layer 2000 after deployment.

[0148] Of course, the screen described in Example 1 can be a common screen such as a white plastic screen, a metal screen, or a bead screen, or an optical screen such as a Fresnel optical screen, a line grating screen, or a photonic screen. Whether common or optical, they can all be used to image image light. In other words, the screen described in Example 1 can also be a single functional structural layer, or multiple functional structural layers, but of course, it must include an imaging display layer 2000. This means that the imaging display layer 2000 is essential for projection screen imaging. The curved plate-like structure of the reinforcement unit 1200 in the screen reinforcement structure 1000 allows the curved top of the reinforcement unit 1200 to serve as the support portion 1210, thereby forming a bearing surface that supports the imaging display layer 2000. The imaging display layer 2000 also experiences a corresponding flattening force in the direction of extension of the curved plate of the reinforcement unit 1200, preventing deformation such as curling and bending of the imaging display layer 2000, ensuring the flatness of the imaging display surface and, therefore, ensuring the imaging effect.

[0149] As shown in Figures 13 and 14, the projection screen shown in Figure 9 is rolled up. By rolling up, the projection screen can be rolled into a rolled-up cylinder, greatly reducing the space occupied and facilitating storage and transportation. When not in use, it can be stored and hidden, improving the aesthetics and greatly enhancing the convenience of transportation. This is particularly beneficial for the promotion and application of large-scale projection screens and portable projection screens, solving the problem of limited transportation space in elevators, corridors, etc., which affects the application range of large-scale screens and the inconvenience of carrying projection screens. The projection screen is also extremely flat, thereby improving the display effect and enhancing the viewing experience. Because the projection screen needs to be rolled up for storage, the extension direction of the curved plate structure of the reinforcement unit 1200 in the screen reinforcement structure 1000 needs to be consistent with the rolling axis.

[0150] As shown in FIG13 , when rolling up, with one end of the projection screen as the axis, the imaging display layer 2000 is placed on the inner side of the roll, and the screen reinforcement structure 1000 is placed on the outer side of the roll. The roll is wound outward along the axis, in order: the imaging display layer 2000, the screen reinforcement structure 1000, the imaging display layer 2000, the screen reinforcement structure 1000…, with the outermost being the screen reinforcement structure 1000.

[0151] As shown in FIG14 , when rolling up, one end of the projection screen is still used as the axis, and the screen reinforcement structure 1000 is placed on the inner side of the roll for winding. Along the axis outward, there are the screen reinforcement structure 1000, the imaging display layer 2000, the screen reinforcement structure 1000, the imaging display layer 2000..., and the outermost layer is the imaging display layer 2000.

[0152] During the entire storage and curling process, the support portion 1210 of the reinforcement unit 1100 in the screen reinforcement structure 1000 does not bend. Therefore, the support surface of the screen reinforcement structure 1000 does not affect the winding of the imaging display layer 2000. In the direction of winding and extending, the imaging display layer 2000 is not subjected to additional supporting forces. The entire projection screen can be rolled up and stored by overcoming the deformation force of the imaging display layer 2000. When the entire projection screen is in the rolled and stored state, the support portion 1210 of the reinforcement unit 1100 in the screen reinforcement structure 1000 remains parallel, maintaining its inherent bending strength and straightness. Therefore, when the projection screen is unfolded again, the support portion 1210 can still ensure the flatness of the imaging display layer 2000 in its extension direction, thereby ensuring image quality.

[0153] Testing the performance indicators of the projection screen in Example 2

[0154] 1. Sample selection

[0155] Sample 1: the 80-inch projection screen corresponding to FIG. 9 in Example 2;

[0156] Sample 2: 100-inch projection screen corresponding to FIG9 in Example 2;

[0157] Sample 3: 80-inch projection screen corresponding to Figure 10 in Example 2;

[0158] Sample 4: 100-inch projection screen corresponding to 10 in Example 2;

[0159] Sample 5: 80-inch projection screen corresponding to Figure 11 in Example 2;

[0160] Sample 6: 100-inch projection screen corresponding to Figure 11 in Example 2;

[0161] Sample 7: 80-inch projection screen corresponding to FIG12 in Example 2;

[0162] Sample 8: The 100-inch projection screen corresponding to FIG. 12 in Example 2.

[0163] 2. Appearance inspection

[0164] Samples 1 to 8 were subjected to heat resistance, cold resistance, humidity resistance and thermal cycle tests:

[0165] Heat resistance test: Place the above samples in a high and low temperature cycle box at 60℃ for 48 hours.

[0166] Cold resistance test: Place the above samples in a high and low temperature circulation box at -40℃ for 48 hours.

[0167] Humidity resistance test: Place the above samples in a high and low temperature cycle box at 40°C and 90% relative humidity for 48 hours.

[0168] Thermal cycling test: place the above samples at -20℃ and 60℃ for 12 hours each, for 3 cycles.

[0169] After the test, visually inspect the samples at an ambient light level of 500 lx or higher. The inspection results are shown in Table 1.

[0170] Table 1

[0171] As can be seen from Table 1, after samples 1 to 8 have undergone heat resistance, cold resistance, humidity resistance and thermal cycle tests, no bumps, flaws, bends, fragments or other conditions that affect the appearance have appeared.

[0172] 3. Performance stability test

[0173] Samples 1 through 8 were reeled and unreeled, with one complete reeling and unreeling cycle recorded as one cycle. Samples 1 through 8 were observed after 500, 2,000, 5,000, and 10,000 cycles to see if any separation or deformation occurred between the various structures. The test results are shown in Table 2.

[0174] Table 2

[0175] As can be seen from Table 5, after samples 1 to 8 were cycled 500, 2,000, 5,000, and 10,000 times, there was no separation between the structures, and no deformation occurred. In other words, the projection screen of Example 2 had good stability, without deformation problems such as curling and bending, and the projection screen had good flatness, thereby ensuring the display effect.

[0176] Example 3

[0177] As shown in Figures 15 to 21 , a screen reinforcement structure 1000 includes a plurality of interconnected reinforcement units 1200. Specifically, the screen reinforcement structure 1000 includes at least two reinforcement units 1200. Adjacent reinforcement units 1200 may be directly connected to each other or connected via other structures. Therefore, the reinforcement units 1200 are not isolated but continuous, thereby ensuring the continuity of the screen reinforcement structure 1000, preventing localized shaking or twisting, and ensuring the long-term stability of the screen reinforcement structure 1000.

[0178] In this embodiment, several reinforcing units 1200 can be exactly the same, that is, the shapes, dimensions, and appearances of the reinforcing units 1200 are consistent. This is more conducive to the processing and molding of the reinforcing structure 1000 for the screen, thereby reducing production costs.

[0179] The reinforcing unit 1200 is an arc-shaped plate-like structure. The reinforcing units 1200 are connected to form a number of support parts 1210. The support parts 1210 are distributed at intervals to form a bearing surface. That is, as shown in Figures 16 and 23, the bearing surface can be composed of the arc-shaped top of the reinforcing unit 1200 as the support part 1210. It can be seen that there is space between the support parts formed by the arc-shaped tops of each adjacent reinforcing unit, so what is formed is a spaced-apart bearing surface. Then, when the screen reinforcement structure 1000 is used to support the screen, the arc-shaped top of each reinforcing unit 1200 contacts the screen, and each reinforcing unit 1200 ensures that the force in the extension direction of the arc-shaped top is stable, thereby avoiding deformation problems such as curling and bending of the screen in this direction when supporting the screen.

[0180] Furthermore, as shown in Figures 16 and 22, the bearing surface can also be composed of the connecting parts of adjacent reinforcing units 1200 as support parts 1210. It can be seen that the adjacent support parts 1210 are separated by the arc-shaped space of the arc-shaped plate structure itself. Therefore, when the screen reinforcement structure 1000 is used to support the screen, the connecting parts of the adjacent reinforcing units are in contact with the screen, and the force in the extension direction of the structure formed by the connection of the adjacent reinforcing units 1200 is more stable, thereby avoiding deformation problems such as curling and bending of the screen in this direction when supporting the screen.

[0181] In this embodiment, when the reinforcement units 1200 are completely aligned, this helps ensure uniform support force from the reinforcement structure 1000 and maintains the flatness of the screen when unfolded. For flexible, rollable projection screens, this facilitates uniform winding and storage, avoiding excessive bending and creases.

[0182] In this embodiment, when the projection screen formed by the reinforcement structure 1000 is rolled up along a certain rolling axis, that is, the formed projection screen has a rolling axis direction, then the extension direction of the arc-shaped plate structure of the reinforcement unit 1200 is consistent with the rolling axis direction. This is beneficial to the rolling and unrolling operations of the entire projection screen, and further improves the flatness of the projection screen in the rolling axis direction.

[0183] In this embodiment, the supporting surface can be a flat surface, a curved surface, or a combination of a flat surface and a curved surface. In other words, the projection surface of the projection screen can be a flat surface, a curved surface, or a combination of a flat surface and a curved surface. It should be emphasized that this embodiment can be used to support different screens to form a projection screen to meet different user needs.

[0184] In this embodiment, as shown in Figure 17, any two adjacent reinforcement units 1200 can be directly connected (position a), and the reinforcement units 1200 are not isolated from each other, but are connected to form a whole, thereby realizing the continuity of the reinforcement structure 1000 for the screen, avoiding the separation of the reinforcement unit 1200 from the screen due to shaking / twisting of the reinforcement unit 1200 with an arc-shaped plate structure, thereby maintaining a long-term and stable connection between the screen and the reinforcement unit 1200, and the flatness of the connection between the arc-shaped plate structure and the screen.

[0185] In this embodiment, as shown in FIG18 , any two adjacent reinforcement units 1200 can be connected by a linear connector (position a). This linear connector provides a transitional connection between any two adjacent reinforcement units 1200, maintaining the continuous stability of the curved plate-like reinforcement units 1200. The alternating arrangement of reinforcement units 1200 and linear connectors ensures the continuous stability of the screen reinforcement structure 1000, thereby ensuring the straightness of the connection and the bending resistance of the structure in its extension direction when the screen reinforcement structure 1000 is used to form a projection screen. This prevents the instability of the screen reinforcement structure 1000 due to localized shaking / twisting of the reinforcement units 1200, thereby maintaining the long-term stability of the screen reinforcement structure 1000 and ensuring the long-term stability of the support when forming a projection screen.

[0186] In this embodiment, the screen reinforcement structure 1000 can be formed by molding a plastic or inorganic fiber-reinforced sheet into a continuously arranged structure. Specifically, the screen reinforcement structure 1000 is molded from a single sheet. This simplifies the manufacturing process, achieves high lightness, and reduces weight while ensuring flatness and stability. Sheet molding reduces the structural strength requirements of the sheet itself. The molding process strengthens the originally weak sheet into a reinforced structure with a certain degree of bending resistance in one direction and the ability to curl in another, resulting in a satisfactory screen reinforcement structure 1000. The overall structure is simple, easy to manufacture, and relatively low in cost.

[0187] In this embodiment, the shape and size of the reinforcing units 1200 are completely consistent. That is, when the sheet is molded, the shape and size of the reinforcing units 1200 formed are consistent. In this way, the supporting portions 1210 of the reinforcing units 1200 are also completely consistent. This ensures uniform supporting force and facilitates continuous processing and manufacturing of the reinforcing units 1200, thereby reducing production costs.

[0188] In this embodiment, the shapes and sizes of the reinforcing units 1200 are completely consistent, and the shapes and sizes of the connecting parts of adjacent reinforcing units 1200 can also be kept consistent, thereby further optimizing the processing and manufacturing process and reducing the processing difficulty and cost.

[0189] In this embodiment, the shapes and sizes of the reinforcement units 1200 are completely consistent, as are the shapes and sizes of the connectors between adjacent reinforcement units 1200, and the reinforcement units 1200 are centrally symmetrical with the adjacent reinforcement units 1200. This arrangement further optimizes the batch and continuous manufacturing process, reducing the difficulty and cost of manufacturing the reinforcement structure 1000.

[0190] As can be seen from Figure 15 , the entire screen is formed into a continuous arch bridge shape using reinforcement structure 1000. The shape and size of reinforcement unit 1200 are not limited to a single setting; that is, the parameters of reinforcement unit 1200 are not limited. As long as the supporting surfaces formed by support portions 1210 of reinforcement unit 1200 are located in the same plane, the above-mentioned effect can be achieved.

[0191] In this embodiment, any reinforcement units 1200 can be connected by a straight line, that is, a reinforcement unit 1200 and an adjacent reinforcement unit 1200 are connected by a plate-like structure 1400, which is a straight line segment when viewed from the side. This helps to simplify the connection between the reinforcement unit 1200 and the adjacent reinforcement unit 1200.

[0192] In this embodiment, all of the reinforcement units 1200 extend in parallel directions to form a rollable support surface. The parallel extension directions of all reinforcement units 1200, i.e., the support portions 1210 of all reinforcement units 1200 are parallel to each other. This allows for parallel support forces from the support portions 1210 of all reinforcement units 1200, facilitating a relatively uniform support force and ensuring effective support from the reinforcement structure 1000 regardless of the projection screen's state.

[0193] In this embodiment, as shown in Figure 20, combined with the aforementioned diagram, the center distance between the arc-shaped tops of adjacent reinforcing units 1200 is taken as the wavelength P, and the vertical distance from the arc-shaped top of the reinforcing unit 1200 to the bottom of the connecting portion is taken as the height h, and the wavelength P is set to 0.5 to 2 times the height h.

[0194] Specifically, the proportional relationship between wavelength P and height h facilitates the control of various parameters during the manufacturing process of the screen reinforcement structure 1000, such as effectively setting the pitch and arch height of the reinforcement units 1200 within the screen reinforcement structure 1000. Furthermore, by controlling the proportional relationship between wavelength P and height h, the supporting force of the support portions 1210 of the reinforcement units 1200, and thus the supporting force of the entire screen reinforcement structure 1000, is enhanced, thereby improving the flatness of the imaging display surface of the projection screen formed thereby. When wavelength P is less than 0.5 times the height h, the distance between adjacent reinforcement units 1200 is too small, increasing the difficulty of manufacturing. When wavelength P is greater than 2 times the height h, the number of reinforcement units 1200 is relatively small, and thus the number of support portions 1210 is correspondingly small, which may affect the flatness of the imaging display surface of the projection screen formed thereby.

[0195] In this embodiment, as shown in FIG20 , the shapes and sizes of the enhancement units 1200 are exactly the same, the arc tops of adjacent enhancement units 1200 are at the same distance from the wavelength P, and the farthest vertical distance of the enhancement units 1200 in the vertical direction, i.e., the height h, is also the same.

[0196] In this embodiment, the reinforcement units 1200 of the screen reinforcement structure 1000 can be non-identical. That is, the configuration of each reinforcement unit 1200 is not unique. It is sufficient that the supporting surfaces formed by the support portions 1210 of the reinforcement units 1200 remain in the same plane. As shown in FIG21 , the height h of the screen reinforcement structure 1000 can gradually increase or decrease along a single direction. Of course, the supporting surfaces formed by the support portions 1210 of the reinforcement units 1200 must always remain in the same plane to achieve the aforementioned anti-bending effect. Furthermore, the wavelength P can also gradually decrease or increase along a single direction. The supporting surfaces formed by the support portions 1210 of the reinforcement units 1200 must still remain in the same plane to achieve the aforementioned anti-bending effect.

[0197] In other words, the height h and wavelength P of the screen reinforcement structure 1000 can be exactly the same; the height h can vary along a single direction while the wavelength P remains constant; the height h can remain constant while the wavelength P varies along a single direction; or both the wavelength P and the height h can vary. Regardless of how the height h varies, the bearing surface formed by the support portion 1210 of the reinforcement unit 1200 remains in the same plane, achieving the anti-bending effect of the screen reinforcement structure 1000.

[0198] Example 4

[0199] FIG22 shows a first schematic diagram of Example 4. The projection screen includes an imaging display layer 2000 and the screen reinforcement structure 1000 described in Example 3. The screen reinforcement structure 1000 is positioned on a side away from the imaging display layer 2000, that is, it is connected to the non-imaging display surface of the imaging display layer 2000, thereby preventing any interference with the imaging display surface. The connecting portion of the reinforcement unit in the screen reinforcement structure 1000 serves as a support portion, forming a bearing surface connected to the imaging display layer 2000. The area of ​​the screen reinforcement structure 1000 is compatible with the area of ​​the imaging display layer 2000. This allows the screen reinforcement structure 1000 to provide excellent stretchability for the imaging display layer 2000, preventing curling or bending, thereby ensuring the flatness of the imaging display surface and preventing overall or partial deformation of the displayed image.

[0200] In this embodiment, the connection between the screen reinforcement structure 1000 and the non-imaging display surface of the imaging display layer 2000 can be achieved by bonding or other methods.

[0201] Furthermore, in a projection screen, the area of ​​the screen reinforcement structure 1000 can be smaller than the area of ​​the imaging display layer 2000, and the size of the screen reinforcement structure 1000 covers greater than or equal to 80% of the imaging display surface area of ​​the imaging display layer 2000. This arrangement ensures that the screen reinforcement structure 1000 provides overall support for the imaging display layer 2000, avoiding the situation where the screen reinforcement structure 1000 is too small and thus lacks sufficient support for the imaging display layer 2000.

[0202] In this embodiment, the height h of the screen reinforcement structure 1000 is less than or equal to 1% of the display width of the imaging display layer 2000 (taking a 16:9 display screen as an example, the display size of a 100-inch screen is 2214x1245mm, so the display width is 1245mm). In this way, while ensuring the stability of the connection between the screen reinforcement structure 1000 and the imaging display layer 2000, the manufacturing and production of the screen reinforcement structure 1000 and projection screens of various sizes are controlled.

[0203] In this embodiment, the height h is optimized, that is, the arch height of the reinforcing unit is controlled to avoid the farthest vertical distance of the reinforcing unit being too large in the vertical direction, which may lead to the emergence of instability factors.

[0204] As shown in FIG. 23 , the difference from FIG. 22 is that the curved top of the reinforcement unit in the screen reinforcement structure 1000 serves as a supporting portion to form a bearing surface connected to the imaging display layer 2000 .

[0205] As shown in FIG24 , in addition to FIG22 , the projection screen further includes a cushioning layer 3000 , which is positioned on the side of the screen reinforcement structure 1000 away from the imaging display layer 2000 . During the reeling and unreeling process, the cushioning layer 3000 provides protection. When reeling, it prevents the screen reinforcement structure 1000 from directly pressing against the imaging display layer 2000 , primarily protecting the imaging display layer 2000 . When unreeling, it prevents the screen reinforcement structure 1000 from deformation due to external forces , primarily protecting the screen reinforcement structure 1000 .

[0206] As shown in Figure 25 , based on Figure 23 , the projection screen further includes a substrate layer 4000 and a cushion layer 3000 . The cushion layer 3000 serves as a protective layer. The substrate layer 4000 is positioned on the side of the screen reinforcement structure 1000 that is closest to the imaging display layer 2000 , meaning that the substrate layer 4000 is positioned between the screen reinforcement structure 1000 and the imaging display layer 2000 . Here, the combination of the imaging display layer 2000 and substrate layer 4000 can be considered the screen described in Example 3, which together with the screen reinforcement structure 1000 and cushion layer 3000 forms a complete projection screen. The provision of substrate layer 4000 facilitates a smoother, more even appearance of the imaging display layer 2000 after deployment.

[0207] The screen described in Example 3 can also be a single functional structural layer, or multiple functional structural layers. The imaging display layer 2000 of common screens, such as white plastic screens or gray screens, is generally composed of a base fabric and a coating layer, and can be understood as a single-layer structure. Optical screens, such as Fresnel optical screens or line grating screens, generally have a coating, a base material, a color layer, a diffusion layer, a microstructure layer, a reflective layer, and so on, and can be understood as a multi-layer structure. Of course, the imaging display layer 2000 must be included; in other words, the imaging display layer 2000 is essential for projection screen imaging. The curved plate-like structural design of the reinforcement unit in the screen reinforcement structure 1000 allows the support surface formed by the reinforcement unit to curl in one direction, allowing the imaging display layer 2000 to curl as well. The bending strength in the direction of extension of the curved plate shape of the reinforcement unit is greatly enhanced, allowing the imaging display layer 2000 to also receive a corresponding flattening force, thereby preventing deformation such as curling and bending of the imaging display layer 2000, ensuring the flatness of the imaging display surface and, therefore, the imaging effect.

[0208] As shown in Figures 23 and 27, the projection screen shown in Figure 22 is rolled up. By rolling up, the projection screen can be rolled into a curled cylindrical shape, greatly reducing the space occupied, facilitating storage and transportation. When not in use, it can be stored and hidden, improving the aesthetics and greatly enhancing transportation convenience. This is particularly beneficial for the promotion and application of large-scale projection screens and portable projection screens, solving the problem of limited transportation space in elevators, corridors, etc., which affects the application scope of large-scale screens and the inconvenience of carrying projection screens. The projection screen is also extremely flat, thereby improving the display effect and enhancing the viewing experience. Because the projection screen needs to be rolled up for storage, the extension direction of the curved plate structure of the reinforcement unit 1200 in the screen reinforcement structure 1000 needs to be consistent with the rolling axis.

[0209] As shown in FIG26 , when rolling up, with one end of the projection screen as the axis, the imaging display layer 2000 is placed on the inner side of the roll, and the screen reinforcement structure 1000 is placed on the outer side of the roll. The roll is wound outward along the axis, in order: the imaging display layer 2000, the screen reinforcement structure 1000, the imaging display layer 2000, the screen reinforcement structure 1000…, with the outermost being the screen reinforcement structure 1000.

[0210] As shown in FIG27 , when rolling up, one end of the projection screen is still used as the axis, and the screen reinforcement structure 1000 is placed on the inner side of the roll for winding. Along the axis outward, there are the screen reinforcement structure 1000, the imaging display layer 2000, the screen reinforcement structure 1000, the imaging display layer 2000..., and the outermost layer is the imaging display layer 2000.

[0211] During the entire storage and curling process, the support portion 1210 of the reinforcement unit 1200 in the screen reinforcement structure 1000 does not bend. Therefore, the bearing surface of the screen reinforcement structure 1000 does not affect the winding of the imaging display layer 2000. In the direction of winding and extending, the imaging display layer 2000 is not subjected to additional supporting forces. The entire projection screen can be rolled up and stored by overcoming the deformation force of the imaging display layer 2000. When the entire projection screen is in the rolled and stored state, the support portion 1210 of the reinforcement unit 1200 in the screen reinforcement structure 1000 remains parallel, maintaining its inherent bending strength and straightness. Therefore, when the projection screen is unfolded again, the support portion 1210 can still ensure the flatness of the imaging display layer 2000 in its extension direction, thereby ensuring image quality.

[0212] Example 5

[0213] The difference between this embodiment and the aforementioned embodiments three and four is that this embodiment describes a screen application consisting of a screen reinforcement structure and an imaging display layer. As shown in FIG28a, this embodiment comprises the aforementioned screen reinforcement structure 1000 and imaging display layer 2000, which are combined to form an electric projection screen. The electric projection screen is mounted on a wall, with the screen's retraction and extension electrically controlled, and the flatness of the imaging display layer 2000 ensured by the screen reinforcement structure 1000. FIG28b illustrates a floor-lift projection screen comprising the aforementioned screen reinforcement structure 1000 and imaging display layer 2000. Unlike electric screens, this embodiment does not require wall mounting; the imaging display layer 2000 is deployed from the bottom up and can be moved at any time after being retracted, making it easy to store and carry. Of course, the screen reinforcement structure 1000 and imaging display layer 2000 can also be combined to form a variety of projection screen applications, such as bracket screens, frame screens, and dual-sided viewing screens, which are not exemplified here.

[0214] Example 6

[0215] The difference between this embodiment and the previous embodiments 1 and 2 is that the present embodiment describes a screen application form formed by combining a screen reinforcement structure 1000 with an imaging display layer. FIG29 is a schematic diagram of embodiment 6, specifically a schematic diagram of a portable projection screen after unfolding; FIG30 is an AA cross-sectional view of FIG29.

[0216] A portable projection screen includes: a rollable screen 20001, a screen reinforcement structure 1000, a first crossbar 3100, and a second crossbar 3200. Taking the portable projection screen as an example, the first crossbar 3100 and the second crossbar 3200 are respectively arranged on opposite sides of the screen 20001 in the direction of gravity. The first crossbar 3100 is used to maintain the straightness of the screen 20001 and to position the entire portable projection screen when hung. The second crossbar 3200 tensions the screen 20001 in the direction of gravity. The screen 20001 includes an imaging display surface. The screen reinforcement structure 1000 is arranged on a side of the screen 20001 away from the imaging display surface, and the screen reinforcement structure 1000 supports the screen 20001.

[0217] Here, the screen piece 20001 is rollable, which is convenient for rolling up and unrolling the portable projection screen. When needed, it can be unfolded for projection, and when not needed, it can be rolled up for transportation and carrying. During the rolling and unrolling process, the screen piece has a rolling axis direction.

[0218] With the portable projection screen's gravity as the vertical direction, the first crossbar 3100 serves as both a reference for maintaining the screen 20001's straightness and a force-bearing rod for positioning the portable projection screen. It also determines the mounting position of the portable projection screen. The second crossbar 3200 exerts a certain gravity, ensuring that the screen 20001 is always vertically tensioned. The first and second crossbars 3100 and 3200 can be made of metal, plastic, or composite materials such as fiberglass or carbon fiber. In addition to the rectangular shape shown in FIG30 , the cross-section of the first and second crossbars 3100 and 3200 can also be circular, and the cross-sections of the first and second crossbars 3100 and 3200 do not need to be identical. The first and second crossbars 3100 and 3200 can be connected to the screen 20001 by any method, such as bonding, clipping, or pressing.

[0219] When installed on a wall, etc., the second cross bar 3200 can also be fixed by magnetism or Velcro, such as installing one or more pairs of magnetic devices. In this way, the lower end of the portable projection screen can be prevented from being affected by wind or slight external force and shaking.

[0220] Screen 20001 includes an imaging display surface for displaying images. A screen reinforcement structure 1000 is positioned on a side away from the imaging display surface. This places screen reinforcement structure 1000 closer to the non-imaging display surface of screen 20001. This prevents screen reinforcement structure 1000 from adversely affecting the imaging function of the imaging display surface. The connection between screen 20001 and the supporting surface formed by screen reinforcement structure 1000 prevents screen 20001 from curling or bending, ensuring the flatness of the screen, and thus the imaging display surface, and preventing overall or partial distortion of the displayed image.

[0221] In this embodiment, the portable projection screen is rolled up along a certain rolling axis, that is, the portable projection screen has a rolling axis direction. Then, the extension direction of the arc-shaped plate structure of the reinforcing unit 1200 is consistent with the rolling axis direction. This is more conducive to the rolling and unrolling operations of the entire portable projection screen, and further improves the flatness of the projection screen in the rolling axis direction.

[0222] Example 7

[0223] The difference between this embodiment and the previous embodiments 1 and 2 is that the present embodiment describes a screen application form formed by combining a screen reinforcement structure 1000 with an imaging display layer. FIG31 is a schematic diagram of the embodiment 1 after unwinding; FIG32 is a side view of FIG31; and FIG33 is a partial enlarged view of A in FIG32.

[0224] A motorized projection screen with anti-curling edges comprises a housing 30001, a screen 20001, a screen reinforcement structure 1000, and a counterweight rod 40001. A reel mechanism and a motor (not shown) are disposed within the housing 3000. The reel mechanism shown in the figure is a reel rod 5000, which is connected to one end of the motor and reel rod 5000. One side of the screen 20001 is connected to the reel rod 5000, and the other side is connected to the counterweight rod 40001. The screen 20001 includes an imaging display surface. The screen reinforcement structure 1000 is disposed on a side of the screen 20001 away from the imaging display surface, and supports the screen 20001.

[0225] Here, the screen piece 20001 is rollable, which is conducive to the winding and unwinding of the anti-curling electric projection screen. When needed, it can be unfolded for projection, and when not needed, it can be rolled up. During the winding and unwinding process, the screen piece has a winding axis direction.

[0226] The housing 3000 houses a reeling rod 5000 and a motor. The motor is connected to one end of the reeling rod 5000 and provides power for the reeling and unreeling of the entire electric projection screen. Controlling the motor drives the reeling rod 5000 to rotate, thereby controlling the reeling and unreeling of the electric projection screen. One side of the screen 20001 is connected to the reeling rod 5000, which primarily handles the reeling and unreeling operations. The other side of the screen 20001 is connected to a counterweight rod 40001, which provides gravity for the unwinding of the screen 20001, keeping it vertically flat.

[0227] The outer shape of the box body 3000 can be square, round, or polygonal. Its decorative edge (cover) is generally only used for concealed or embedded products and can be L-shaped, T-shaped, or other special shapes. The various components of the box body 30001 can be connected using screws, snaps, or welding. The winding rod 5000 can use a reel with a different involute structure to address the height difference between the winding rod 5000 and the screen 20001. The involute height can be adjusted according to actual conditions. The counterweight rod 40001 serves as a decorative counterweight and has various shapes. Its cross-section can be trapezoidal, rectangular, or circular. The counterweight rod 40001 can be made of metals such as iron and stainless steel. The end caps of the counterweight rod 40001 can include a small step to limit the position of the retracted electric projection screen and conceal gaps. The connection between the winding rod 5000, the counterweight rod 40001, and the screen 20001 can be achieved by bonding, pressing with a bead, or snaps.

[0228] When mounted on a wall, etc., the counterweight rod 40001 can also be fixed by magnetism or Velcro, such as by installing one or more pairs of magnetic devices. In this way, the lower end of the portable projection screen can be prevented from shaking due to wind or slight external force.

[0229] The size of screen reinforcement structure 1000 is compatible with the size of screen sheet 20001. This allows screen sheet 20001 to stretch significantly, preventing curling and bending. This ensures the flatness of the imaging display surface of screen sheet 20001 and prevents overall or partial distortion of the displayed image. The screen reinforcement structure 1000 and the side of screen sheet 20001 facing away from the imaging display surface can be bonded together.

[0230] In this embodiment, as shown in Figure 33 , after unwinding, the screen sheet 20001 is positioned closer to the reeling rod 5000, while the screen reinforcement structure 1000 is positioned further away from the reeling rod 5000. Figure 34 is a partially enlarged view of the screen sheet 20001 unwound on the side further away from the reeling rod; that is, the screen sheet 20001 can be positioned further away from the reeling rod 5000, while the screen reinforcement structure 1000 is positioned closer to the reeling rod 5000.

[0231] In this embodiment, the electric projection screen is rolled up along a certain rolling axis, that is, the electric projection screen has a rolling axis direction. Then, the extension direction of the arc-shaped plate structure of the reinforcing unit 1200 is consistent with the rolling axis direction. This is more conducive to the rolling and unwinding operations of the entire electric projection screen, and further improves the flatness of the electric projection screen in the rolling axis direction.

[0232] Example 8

[0233] The difference between this embodiment and the above-mentioned embodiments 1 and 2 is that the present embodiment describes a screen application form formed by combining a screen reinforcement structure 1000 with an imaging display layer. As shown in Figures 35 and 36, a ground-lift projection screen includes a base 50001, a screen piece 20001, a screen reinforcement structure 1000, a lifting mechanism 40002 and an upper beam 30002. The base 50001 is provided with a reel mechanism, which includes a reeling rod 5000. One side of the screen piece 20001 is connected to the reeling rod 5000 and the other side is connected to the upper beam 30002; one end of the lifting mechanism 40002 is connected to the upper beam 30002 and the other end is connected to the base 50001; the screen piece 20001 includes an imaging display surface, the screen reinforcement structure 1000 is provided on the side of the screen piece 20001 away from the imaging display surface, and the screen reinforcement structure 1000 supports the screen piece 20001.

[0234] The base 50001 may be in a square, circular, or polygonal shape, and its decorative edge (cover) is generally only used for hidden or embedded products. Its shape may be "L", "T", or an irregular shape. A reeling rod 5000 is provided on it, and the reeling rod 5000 is connected to one side of the screen 20001. The reeling rod 5000 is mainly used to reel in the screen 20001. The reeling rod 5000 cooperates with the lifting mechanism 40002 to control the lifting of the floor-lift projection screen. The other side of the screen 20001 is connected to the upper beam 30002, and the upper beam 30002 provides an upward tensile force for the screen 20001.

[0235] In this embodiment, the winding rod 5000 can utilize a reel with a different involute structure to mitigate the height difference between the winding rod 5000 and the screen piece 20001. The involute can be adjusted in height based on actual conditions. The upper crossbeam 30002 serves a decorative purpose and has various shapes, including a trapezoidal, rectangular, or circular cross-section. The upper crossbeam 30002 can be made of metals such as iron and stainless steel. The end caps of the upper crossbeam 30002 can include a small step to limit the position of the retracted curtain and conceal gaps. The connection between the winding rod 5000, upper crossbeam 30002, and screen piece 20001 can be achieved by bonding, pressing with a pressure strip, or snapping.

[0236] One end of the lifting mechanism 40002 is connected to the upper beam 30002 to control the upward movement of the upper beam 30002, thereby providing an upward force for the expansion of the curtain piece 20001. The other end is connected to the base 50001, so that the curtain piece 20001 can be retracted into the base.

[0237] In this embodiment, the lifting mechanism 40002 mainly functions to unfold the screen piece 20001 and support the screen surface to stand upright. The lifting mechanism 40001 can be formed by a combination of parts such as a flex arm and a telescopic rod, and the whole can be in a V shape.

[0238] In addition, the scroll mechanism can also include a motor (not shown in the figure) that matches the winding rod 5000, which provides power for the winding and unwinding of the entire floor-lifting projection screen. By controlling the movement of the winding rod 5000 to control the winding and unwinding of the floor-lifting projection screen, the control of the winding and unwinding of the floor-lifting projection screen is achieved.

[0239] Here, the screen piece 20001 is rollable, which is conducive to the winding and unwinding of the anti-curling electric projection screen. When needed, it can be unfolded for projection, and when not needed, it can be rolled up.

[0240] In this embodiment, the floor-lifting projection screen is rolled up along a certain rolling axis, that is, the floor-lifting projection screen has a rolling axis direction. Then, the extension direction of the arc-shaped plate structure of the reinforcing unit 1200 is consistent with the rolling axis direction. This is more conducive to the rolling and unrolling operations of the entire floor-lifting projection screen, and further improves the flatness of the floor-lifting projection screen in the rolling axis direction.

[0241] Embodiment 9

[0242] The difference between this embodiment and the previous embodiments 1 and 2 is that the present embodiment describes a screen application form formed by combining a screen reinforcement structure 1000 with an imaging display layer, as shown in Figures 37 and 38. A simple projection screen 10 includes: a rollable screen sheet 20001, a screen reinforcement structure 200, an upper crossbar 300, a lower crossbar 400, a left clamping frame 500 and a right clamping frame 600.

[0243] Furthermore, the upper cross bar 300 and the lower cross bar 400 are respectively arranged on the two opposite sides of the rollable screen 20001 in the vertical direction. The upper cross bar 300 is arranged on the upper side of the rollable screen, and the lower cross bar 400 is arranged on the lower side of the rollable screen. The upper cross bar 300 clamps the rollable screen to keep the rollable screen straight. At the same time, as shown in Figure 39, a plurality of mounting holes 2 can be provided on the upper cross bar, which can be used to hang the screen by matching with the hooks on the mounting wall; the lower cross bar 400 clamps the lower side of the rollable screen to provide gravity to make the rollable screen straight. Tensioned in the vertical direction; the cross-sectional shape of the upper cross bar and the lower cross bar can be rectangular, circular, etc. When the cross-sectional shape of the upper cross bar or the lower cross bar is circular, the rollable screen piece can be directly rolled up on the cross bar for rolling and packaging; when the cross-sectional shape of the upper and lower cross bars is rectangular, it is necessary to provide arc-shaped components on the opposite sides of the rectangle, and then the rollable screen piece is rolled up on the cross bar for rolling and packaging; a winding shaft can also be provided in the lower cross bar, and an opening is provided on the lower cross bar, and the rollable screen piece on the winding shaft passes through the opening of the lower cross bar and connects to the upper cross bar, thereby realizing the rolling, packaging and unfolding of the projection screen. When the rollable screen sheet is rolled up and packaged, the screen reinforcement structure 1000 can be rolled onto the inner layer, or the imaging surface of the rollable screen sheet can be rolled onto the inner layer. Velcro or magnetic material can also be provided on the lower crossbar 400, corresponding to the Velcro or magnetic material on the mounting surface. When the projection screen is installed, the Velcro or magnetic material on the lower crossbar is adsorbed and fixed to the Velcro or magnetic material on the mounting surface, further preventing the projection screen from shaking under stress and affecting viewing. The rollable screen sheet 20001 can be connected to the upper and lower crossbars 300 and 400 by gluing, snapping, or clamping. The upper and lower crossbars can be made of metal, plastic, fiberglass, carbon fiber, or other materials.

[0244] Furthermore, the left clamping frame 500 and the right clamping frame 600 are respectively arranged on two opposite sides of the rollable screen 20001 in the horizontal direction. On the one hand, they can be used to clamp the two sides of the screen to keep the screen stable, and on the other hand, they can also make the projection screen more beautiful.

[0245] Furthermore, as shown in FIG38 , the end faces of the left clamping frame 500 and the right clamping frame 600 are formed into inclined surfaces, and a receiving cavity matching the thickness of the rollable curtain piece is formed on the frame surface; a card slot 3 is formed on the rod surface of the upper cross bar 300 and the lower cross bar 400, and the upper and lower side edges of the rollable curtain piece 20001 are respectively clamped in the card slots 3 of the upper cross bar 300 and the lower cross bar 400, and the left clamping frame 500 and the right clamping frame 600 can be respectively clamped in the card slots 3 at the left and right ends of the upper and lower cross bars, and at the same time, the two side edges of the rollable curtain piece are clamped into the receiving cavity on the frame surface, thereby clamping the rollable curtain piece and keeping the curtain piece stable.

[0246] Example 10

[0247] The difference between this embodiment and the previous embodiments 1 and 2 is that the present embodiment describes a screen application form formed by combining a screen reinforcement structure 1000 with an imaging display layer. As shown in Figures 40 and 42, a bracket projection screen 10 includes: a support base 3001, a telescopic component 4001, a clamping component 5001, a rollable screen sheet 20001, and a screen reinforcement structure 1000.

[0248] Furthermore, the telescopic assembly 4001 can be a nested, adjustable-length telescopic rod. A locking buckle is provided on the larger telescopic rod. When the telescopic rod is extended to a certain size or stowed, the locking buckle secures it, preventing relative movement between the rods. One end of the telescopic assembly 4001 is nested within the support base 3001, secured by a snap or threaded fastener, creating a removable connection between the two. The other end of the telescopic assembly 4001 is nested or nut-connected to the clamping assembly 5001, also providing a removable connection between the telescopic assembly 4001 and the clamping assembly 5001. This removable connection between the telescopic assembly, the support base, and the clamping assembly facilitates storage and transportation of the projection screen, allowing it to be used in a variety of locations. This broadens the application range of the projection screen and offers high practical value. The support base 3001 can have a three-claw gripping structure. The three claws can be rotated along a central connection to form a long strip. Each claw can also be folded to reduce its storage size. Of course, the support base 3001 can also be a flat surface, and rollers and locking devices can be set on the surface, so that the screen can be moved to the viewing position by the rollers and then locked and fixed, which is more labor-saving.

[0249] Furthermore, the rollable curtain panel 20001 is mounted on a clamping assembly 5001. The clamping assembly includes an upper crossbeam 501 and a lower crossbeam 502, which are respectively disposed on opposite sides of the rollable curtain panel 20001 in the vertical direction. The upper crossbeam 501 is disposed above the rollable curtain panel 20001, and the lower crossbeam 502 is disposed below the rollable curtain panel 20001. The upper crossbeam 501 and the lower crossbeam 502 jointly clamp the rollable curtain panel 20001. The spacing between the upper and lower crossbeams is adjustable to provide vertical tension to the rollable curtain panel and keep the rollable curtain panel straight. The cross-sectional shape of the upper crossbeam and the lower crossbeam can be rectangular, circular, etc. When the cross-sectional shape of the upper crossbeam or the lower crossbeam is circular, the rollable screen piece can be directly rolled up on the crossbeam for rolling and packaging; when the cross-sectional shape of the upper and lower crossbeams is rectangular, it is necessary to provide arc-shaped components on the opposite sides of the rectangle, and then rollable screen piece is rolled up on the crossbeam for rolling and packaging; winding shafts can also be provided in the upper and lower crossbeams, and openings are provided on the crossbeams. The rollable screen piece on the winding shaft passes through the opening of one crossbeam and connects to the other crossbeam, thereby realizing the rolling, packaging and unfolding of the projection screen.

[0250] Furthermore, one end of the telescopic assembly 4001 can be nested or nut-connected with the lower crossbeam 502 of the clamping assembly 5001; it can also be nested or nut-connected with both the lower crossbeam 502 and the upper crossbeam 501 of the clamping assembly 5001. When the telescopic assembly and the crossbeam are nested, the telescopic assembly can be inserted into the hole in the crossbeam and then secured with a lock, or a sleeve can be extended from the crossbeam to nest with the telescopic assembly, and then locked and secured.

[0251] Furthermore, when the rollable screen sheet is rolled up and packaged, the screen reinforcement structure 200 can be rolled up inside the inner layer, or the imaging surface of the rollable screen sheet can be rolled up inside the inner layer. The rollable screen sheet 20001 can be connected to the upper and lower crossbeams 501 and 502 by gluing, snapping, or clamping. The upper and lower crossbeams can be made of metal rods, plastic rods, fiberglass rods, carbon fiber rods, and other materials.

[0252] Furthermore, as shown in FIG41 , the clamping assembly 5001 can also be composed of an upper crossbeam 501, a lower crossbeam 502, and a curved arm 503. The arms of the curved arm 503 can be extended and retracted to accommodate different screen sizes, thereby securing the clamping assembly and providing tension to the rollable screen. Each arm of the curved arm 503 can be rotated and retracted about its center. Each arm of the curved arm 503 is detachably connected to the upper crossbeam 501 and the lower crossbeam 502 via nuts or buckles. After the curved arm 503 is removed and stored, the rollable screen can be rolled up onto the upper or lower crossbeam. Currently, the curved arm 503 can also be a hydraulic telescopic rod, similarly detachably connected to the upper and lower crossbeams, securing the clamping assembly and providing tension to the rollable screen.

[0253] Example 11

[0254] The difference between this embodiment and the previous embodiments 1 and 2 is that the present embodiment describes a screen application form formed by combining a screen reinforcement structure 1000 with an imaging display layer. As shown in Figures 43 and 44, a frame projection screen 10 includes: an inner frame 3002, an outer frame 4002, connecting corner pieces 6001, a screen sheet fastening mechanism 5002, a rollable screen sheet 20001, and a screen reinforcement structure 1000.

[0255] Furthermore, the inner frame 3002 is connected into a rectangle through the connecting corner pieces 6001 at the four corners, the rollable curtain piece 20001 is tensioned on the inner frame connected into a rectangle through the curtain piece fastening mechanism 5002, and the outer frame 4002 is nested on the rectangular inner frame.

[0256] Furthermore, the end faces of the inner frame are cut at a 45° angle, and are formed with grooves that match the dimensions of the connecting angle pieces 6001. The connecting angle pieces are in the shape of "∟", and the connecting angle pieces 6001 are respectively inserted into the grooves of the end faces of the inner frame to connect the inner frame into a rectangle. Threaded holes are also provided on the end faces of the inner frame and the connecting angle pieces. After the inner frame is connected into a rectangle, screws are passed through the inner frame and the connecting angle pieces to lock them together to form a stable rectangular inner frame. Of course, the connecting angle pieces can also be in the shape of hinges, which are locked with the inner frame by screws to form a stable rectangular frame. There are many other ways to connect the connecting angle pieces to the inner frame, and I will not give examples of them one by one here.

[0257] Furthermore, the rectangular inner frame can be retractable, and a multi-section telescopic frame that is nested in each other is used to make the length of the frame adjustable. A locking buckle is provided on the telescopic frame. After the telescopic frame is extended to a certain size or stored, it is fixed by the locking buckle, thereby preventing the relative movement between the telescopic frames and forming a stable frame; by setting the inner frame to be retractable, the frame can be assembled in advance and stored into a very small rectangular frame (the area can be reduced by up to 75% compared to the original size frame), and then packaged and shipped to customers, effectively reducing the assembly time of the frame screen product at the client end, and improving installation efficiency and user experience.

[0258] Furthermore, the rectangular inner frame can be foldable. After cutting the middle of each inner frame, it is connected with a hinge, and then the four corners are connected with connecting corner pieces to form a rectangular inner frame. At this time, the rectangular inner frame can be folded with the hinge to form a smaller rectangular frame (the area can be reduced by up to 75% compared to the original size frame). By setting the inner frame to be foldable, the frame can be assembled in advance and stored into a very small rectangular frame (the area can be reduced by up to 75% compared to the original size frame). It can then be packaged and shipped to customers, effectively reducing the assembly time of the frame screen product at the client end and improving installation efficiency and user experience.

[0259] Furthermore, the outer frame 4002 can be an integrally formed, non-detachable frame, or a detachable, multi-branch frame. When the outer frame is an integrally formed frame, after the rollable curtain sheet is stretched on the rectangular inner frame, the outer frame is nested on the outer periphery of the inner frame and then locked to the inner frame by screws or buckles. When the outer frame is a detachable, multi-branch frame, the end faces of each frame can be cut into a 45° bevel, and then connected to form a rectangular outer frame by connecting corner pieces, and then locked to the inner frame by screws or buckles.

[0260] As shown in FIG45 , the curtain piece fastening mechanism 5002 is detachably arranged on the inner frame. The curtain piece fastening mechanism 5002 includes a strip-shaped clamping plate 5010 and a screw 5020. The length of the clamping plate is equivalent to or appropriately shorter than the length of each frame of the inner frame. The clamping plate 5010 is provided with a receiving cavity 1 (5030) and a receiving cavity 2 (5040) running through the length direction of the strip clamping plate. The four sides of the rectangular rollable curtain piece are respectively clamped in the receiving cavity 1 (5030) on the four clamping plates 5010. A nut is nested in the receiving cavity 2 (5040). The screw 5020 is used to pass through the raised edge on the inner frame 3002 and then connected to the nut. In this way, the curtain piece fastening mechanism can be detachably connected to the inner frame 3002. On the other hand, the rotation of the screw can drive the clamping plate 5010 to move, thereby tightening or loosening the rollable curtain piece, forming a tension-adjustable curtain piece fastening mechanism 5002, thereby achieving adjustment of the flatness of the curtain piece.

[0261] Furthermore, the four sides of the rollable curtain piece can also be fastened to the accommodating cavity 1 (5030) on the splint 5010 through a clamping strip, or the four sides can be wrapped with a fiberglass rod, and then the fiberglass rod is inserted from the end face of the accommodating cavity 1 (5030) on the splint 5010, and the curtain piece is embedded from the strip opening of the accommodating cavity 1 (5030). Since the diameter of the fiberglass rod is larger than the width of the strip opening of the accommodating cavity 1 (5030), and the thickness of the curtain piece is smaller than the width of the strip opening of the accommodating cavity 1 (5030), the curtain piece can be arbitrarily embedded in the strip opening of the accommodating cavity 1 (5030), and the fiberglass rod is locked in the accommodating cavity 1. The splint is driven to move by the adjusting screw, so that the fiberglass rod drives the curtain piece to move, and the tension of the curtain piece is adjusted to achieve the adjustment of the flatness of the curtain piece.

[0262] Furthermore, when the rollable screen sheet is rolled up and packaged, the screen reinforcement structure 1000 may be rolled up on the inner layer, or the imaging surface of the rollable screen sheet may be rolled up on the inner layer.

[0263] Example 12

[0264] This embodiment differs from the first and second embodiments described above in that it describes a screen application configuration formed by combining a screen reinforcement structure 1000 with an imaging display layer. As shown in FIG46 , a multi-purpose projection screen 10 comprises a rollable screen sheet 20001, a screen reinforcement structure 1000, and a rotating mechanism 3003. The rollable screen sheet 20001 includes an imaging display surface, a surface of the rollable screen sheet 20001 facing away from the imaging display surface being connected to a supporting surface. The rotating mechanism 300 is provided with a gear shaft 301, the teeth on the gear shaft 301 complementing those of the screen reinforcement structure 1000. The rollable screen sheet 20001 is nested on the outer circumference of the gear shaft 301, and the rotating mechanism 3003 drives the rollable screen sheet 20001 in circular motion via the gear shaft 301.

[0265] The rotating mechanism 3003 supports and drives the rollable screen to perform circular motion. On the other hand, it can provide tension to flatten the rollable screen in the vertical direction of the screen. The screen reinforcement structure 1000 provides bending resistance along the structural extension direction (x direction) to resist bending deformation of the rollable screen in the horizontal direction, thereby providing a flat projection screen together with the rotating mechanism.

[0266] Preferably, the projection screen 10 includes two rotating mechanisms 3003, positioned relative to each other at the upper and lower ends of the screen in the vertical direction. Adjusting the relative positions of the rotating mechanisms allows tensioning and flattening the projection screen. Rotating the rotating mechanisms rotates the projection screen, enabling switching between different screen types. Alternatively, four rotating mechanisms can be provided, located at the upper, lower, left, and right ends of the screen, allowing for adjustment of tension at each position to achieve a flat screen and also for switching between different screen types.

[0267] As shown in FIG47 , the rotating mechanism 3003 includes a cylindrical gear shaft 301. The outer circumference of the gear shaft 301 is provided with teeth that complement the tooth profile of the screen reinforcement structure 1000. The teeth extend in the same direction as the screen reinforcement structure 1000, and the length of the teeth completely covers the length of the screen reinforcement structure 1000. It is understood that the length of the gear shaft 301 can be smaller than the length of the screen reinforcement structure 1000. For example, a gear shaft can be provided at each horizontal end of the screen, and the length of the gear shafts only covers 80% of the length of the screen reinforcement structure 1000. When the gear shafts are rotated, the rollable screen can still be driven to move in a circular motion.

[0268] As shown in Figure 48, the rotation mechanism 3003 includes a gear shaft 301 and a motor 302 connected to the gear shaft 301. The motor 302 is a tubular motor connected to the gear shaft 301 via a coupling. The motor 302 provides power to rotate the gear shaft, thereby rotating and switching between different types of projection screens. It is understood that the projection screen can be equipped with only one motor, or each gear shaft can be equipped with an independent motor.

[0269] As shown in Figure 49, the rotating mechanism 3003 includes a gear shaft 301 and a rocker 303 connected to the gear 301. The rocker 303 is fixedly connected to the gear shaft through a pin. People can rotate the gear shaft through the rocker 303 to drive the rollable screen to move in a circular motion, thereby rotating and switching different types of projection screens.

[0270] As shown in Figure 50 , the rotating mechanism 3003 comprises a gear shaft 301 and end caps 304. The ends of the gear shaft 301 are connected to the end caps 304 via rotating bearings. The end caps further stabilize the rotating structure. They also shield the edges of the screen, creating distinct display areas and ensuring the aesthetics of the screen. If powered by a motor, the end caps can also cover the motor, further enhancing the screen's aesthetics. A baffle can also be placed between the end caps to cover the back of the screen, further enhancing the screen's aesthetics. Hanging brackets can also be attached to the end caps, allowing the screen to be mounted on a wall. If powered by a joystick, the joystick should extend through the end caps to facilitate screen rotation.

[0271] As shown in FIG51 , the rollable screen 20001 is composed of two types of screens: a Fresnel screen 10012 and a white plastic screen 10022. The Fresnel screen 10012 and the white plastic screen 10022 are switched between each other via a rotating mechanism. When the Fresnel screen 10012 is being viewed, the white plastic screen 10022 is hidden behind the screen. When the white plastic screen 10022 is being viewed, the Fresnel screen 10012 is hidden behind the screen. In this way, a single screen can meet the needs of both types of projection display. It is understood that the rollable screen can also be composed of three, four, or more types of screens, which can be switched between each other by the rotating mechanism to meet the needs of various projection display methods. Examples are not provided here.

[0272] As shown in FIG52 , the rollable screen sheet comprises a rollable painting 10032 and a Fresnel screen 10012. When the projection display on Fresnel screen 10012 is not needed, the screen sheet can be switched to the painting via a rotating mechanism, thereby decorating the room. It is understood that the rollable screen sheet can also be composed of two types, such as a rollable painting and a white plastic screen, a gray screen, or a silver screen, or a combination of multiple types, such as a white plastic screen and a Fresnel screen. By switching between these types via the rotating mechanism, the functions described herein can be achieved, and detailed examples are omitted here.

[0273] The above are merely preferred embodiments of the present application. It should be noted that the above preferred embodiments should not be construed as limiting the present application. The scope of protection of the present application should be determined by the scope defined in the claims. Persons skilled in the art will appreciate that improvements and modifications can be made without departing from the spirit and scope of the present application, and such improvements and modifications should also be considered within the scope of protection of the present application.

Claims

1. A reinforcement structure for a screen, characterized in that: include: A plurality of mutually connected reinforcing parts, wherein the reinforcing parts include reinforcing units, and the reinforcing units are in the shape of arc plates, wherein the arc-shaped tops of the reinforcing units serve as supporting parts and are distributed at intervals to form a bearing surface.

2. The screen reinforcement structure according to claim 1, characterized in that: The bearing surface includes a plane and a curved surface or a combination thereof.

3. The screen reinforcement structure according to claim 1, characterized in that: Any two adjacent reinforcing units are connected via a connecting piece.

4. The screen reinforcement structure according to claim 3, characterized in that: Any two adjacent reinforcing units are connected through an inverted arc-shaped reinforcing unit.

5. The screen reinforcement structure according to claim 4, characterized in that: Any reinforcing unit is connected to an adjacent inverted arc-shaped reinforcing unit via a straight line.

6. The reinforcing structure for a screen according to any one of claims 1 to 5, characterized in that: The extending directions of the arc-shaped tops of all the reinforcing units are parallel to each other to form a rollable bearing surface.

7. A projection screen, characterized in that: The projection screen comprises an imaging display layer and a reinforcing structure for a screen as claimed in any one of claims 1 to 5, wherein the reinforcing structure for a screen is arranged on a side of an imaging display surface away from the imaging display layer.

8. The projection screen according to claim 7, characterized in that: The size coverage of the screen reinforcement structure is greater than or equal to 80% of the imaging display surface area of ​​the imaging display layer.

9. The projection screen according to claim 7, characterized in that: The height of the screen reinforcement structure is less than or equal to 1% of the display width of the imaging display layer.

10. The projection screen according to any one of claims 7 to 9, characterized in that: A cushion layer is arranged on a side of the screen reinforcement structure away from the imaging display layer; and a base material layer is arranged on a side of the screen reinforcement structure close to the imaging display layer.

11. The projection screen according to claim 7, characterized in that: include: A rollable curtain sheet, a first crossbar and a second crossbar; The first cross bar and the second cross bar are respectively arranged on two opposite sides of the curtain piece; The first cross bar is used to keep the screen piece straight and the portable projection screen mounted and positioned; The second cross bar tensions the curtain piece in the vertical direction; The bearing surface is used to bear the curtain piece; The screen piece comprises an imaging display surface, and the screen piece is connected to the bearing surface on a side away from the imaging display surface.

12. The projection screen according to claim 7, characterized in that: include: Box body, rollable curtain sheet, counterweight rod; The box body is provided with a reel mechanism and a motor, the reel mechanism includes a reeling rod, and the motor is connected to one end of the reeling rod; One side of the curtain piece is connected to the reeling rod, and the other side is connected to the counterweight rod; The bearing surface is used to bear the curtain piece; The screen piece comprises an imaging display surface, and the screen piece is connected to the bearing surface on a side away from the imaging display surface.

13. The projection screen according to claim 7, characterized in that: include: A base, a rollable screen, a lifting mechanism and an upper crossbeam; the base is provided with a reel mechanism, the reel mechanism includes a reeling rod, the reeling rod is connected to one side of the screen, and the other side of the screen is connected to the upper crossbeam; one end of the lifting structure is connected to the upper crossbeam, and the other end is connected to the base; the bearing surface is used to bear the screen; the screen includes an imaging display surface, and the screen is connected to the bearing surface on the side away from the imaging display surface.

14. The projection screen according to claim 7, characterized in that include: A rollable screen piece, an upper cross bar, a lower cross bar, a left clamping frame and a right clamping frame, wherein the upper cross bar and the lower cross bar are respectively arranged on two opposite sides of the rollable screen piece, the upper cross bar is used to keep the rollable screen piece straight and hang the screen, the lower cross bar is used to provide gravity to make the screen piece tensioned in the vertical direction, the left clamping frame and the right clamping frame are respectively arranged on the other two opposite sides of the rollable screen piece, and are used to clamp the two sides of the screen piece to keep the screen piece stable and beautiful; the rollable screen piece includes an imaging display surface, and a side of the rollable screen piece away from the imaging display surface is connected to the bearing surface.

15. The projection screen according to claim 7, characterized in that include: A support seat, a telescopic component, a clamping component, and a rollable screen piece. The telescopic component is detachably arranged on the support seat, the telescopic component includes a telescopic rod with adjustable length, the clamping component is connected to one end of the telescopic rod, the rollable screen piece is arranged on the clamping component, the rollable screen piece includes an imaging display surface, and a side of the rollable screen piece away from the imaging display surface is connected to the bearing surface.

16. The projection screen according to claim 7, characterized in that include: An inner frame, an outer frame, connecting corner pieces, a screen piece fastening mechanism, and a rollable screen piece. The inner frame is connected into a rectangle through the connecting corner pieces. The rollable screen piece is tensioned on the rectangular inner frame through the screen piece fastening mechanism. The outer frame is nested on the rectangular inner frame. The rollable screen piece includes an imaging display surface. A side of the rollable screen piece away from the imaging display surface is connected to the bearing surface.

17. The projection screen according to claim 7, characterized in that include: A rollable screen piece and a rotating mechanism; the rollable screen piece includes an imaging display surface, a side of the rollable screen piece away from the imaging display surface is connected to the bearing surface, a gear shaft is provided on the rotating mechanism, the tooth shape on the gear shaft is complementary to the reinforcing structure, the rollable screen piece is nested outside the gear shaft, and the rotating mechanism drives the rollable screen piece to perform circular motion through the gear shaft.

18. A reinforcement structure for a screen, characterized in that: include: A plurality of mutually connected reinforcing units are in the shape of arc plates, the reinforcing units are connected to form a plurality of supporting parts, and the supporting parts are distributed at intervals to form a bearing surface in combination.

19. The reinforcing structure for a screen according to claim 18, characterized in that: The supporting portion is the arc-shaped top of the reinforcing unit; or the supporting portion is the connecting portion of any two adjacent reinforcing units.

20. A projection screen, characterized in that: The projection screen comprises an imaging display layer and the reinforcing structure for the screen as claimed in claim 18 or 19, wherein the reinforcing structure for the screen is arranged on a side away from the imaging display layer.

Images