Projection screen and projection system

Abstract

The invention provides a projection screen and a projection system, and the projection screen comprises a display diaphragm which is provided with a projection light-receiving surface; the screen frame comprises two side frames, the side frames are integrated side frames, the two side frames are connected to surround the periphery of the display membrane, each side frame comprises a first side frame and a second side frame, the first side frame and the second side frame are rotationally connected, and the second side frame comprises a first section and a second section; the connecting assembly comprises a rotary connecting piece, and the first section and the second section are connected with the rotary connecting piece; the adjusting part is located between the first section and the second section, and the rotary connecting part is rotationally arranged on the adjusting part and moves on the adjusting part so that the distance between the first section and the second section can be changed. According to the invention, convenient home entry is realized, meanwhile, the gap of the second frame after assembly is reduced, and the stability after assembly is improved.

Description

Technical Field

[0001] This application relates to the field of projection technology, and in particular to a projection screen and projection system. Background Technology

[0002] As society continues to develop, people's pursuits are also constantly changing, and laser TVs are becoming increasingly popular. As a crucial component of laser TVs, the larger the screen size, the better the viewing experience.

[0003] Currently, the large size of the entire screen frame makes in-home installation quite inconvenient during transportation and installation.

[0004] The preceding description is intended to provide general background information and does not necessarily constitute prior art.

[0005] Application content

[0006] The main objective of this application is to provide a projection screen and projection system that enables convenient home installation, while also reducing the gaps in the second frame after assembly and improving the stability of the assembled system.

[0007] To achieve the above objectives, in a first aspect, this application provides a projection screen, comprising:

[0008] The display film has a projection light-receiving surface;

[0009] The screen frame includes two side frames connected to surround the outer periphery of the display film. The side frames include a first border and a second border, which are rotatably connected. The second border includes a first segment and a second segment.

[0010] Connection components, including:

[0011] Rotary connectors, with the first and second sections respectively connected to the rotary connectors;

[0012] An adjusting member is located between the first segment and the second segment. A rotating connecting member is rotatably disposed on the adjusting member and moves on the adjusting member so that the distance between the first segment and the second segment is variable.

[0013] The beneficial effects of this application are as follows: By folding the screen frame, the scattered projection screen can be folded, which on the one hand reduces the screen's entry volume into the home, making it convenient to enter and reducing the transportation and / or entry volume, thus solving the problem of bringing large-size screens into the home; on the other hand, folding and fixing the screen frame is simple when assembling it in the user's home, eliminating the need for traditional hinge structures and using rotating connectors, which is simpler, more ingenious, reduces costs, and can significantly improve installation speed; in addition, the cooperation between the adjusting parts and the rotating connectors reduces the gap of the second frame after assembly, thereby improving the stability after assembly.

[0014] Based on the above technical solution, the following improvements can be made to this application.

[0015] In some optional implementations, the screen frame has a flattened state and a folded state. When the screen frame switches from the folded state to the flattened state, the rotating connector moves to the first position, causing the first segment and the second segment to move towards each other.

[0016] When the screen frame switches from a flat state to a folded state, the rotating connector moves to the second position, causing the first and second sections to move in opposite directions.

[0017] The first position is the middle of the adjusting component, and the second position is the end of the adjusting component.

[0018] In some alternative embodiments, the first segment has a first groove, the second segment has a second groove, the opening of the first groove is connected to the opening of the second groove to form a receiving cavity, and the adjusting member is located in the receiving cavity.

[0019] In some optional embodiments, at least one adjustment hole is provided on the adjustment member, the adjustment hole extends through opposite sides of the adjustment member along the width direction of the second frame, and the rotating connector is movable within the adjustment hole;

[0020] The first section has a first rotating hole, and a part of the rotating connector passes through the first rotating hole and the adjusting hole, and rotates within the first rotating hole and the adjusting hole;

[0021] The second section has a second rotating hole, and another part of the rotating connector passes through the second rotating hole and part of the adjustment hole, and rotates within the second rotating hole and the other part of the adjustment hole to fold the first section and the second section.

[0022] In some optional embodiments, at least one adjusting hole includes a first adjusting hole and a second adjusting hole, the first adjusting hole and the second adjusting hole are spaced apart along the length direction of the adjusting member, the position of the first adjusting hole matches the position of the first segment, and the position of the second adjusting hole matches the position of the second segment;

[0023] Part of the rotating connector rotates through the first rotating hole and the first adjusting hole, while another part of the rotating connector rotates through the second rotating hole and the second adjusting hole.

[0024] In some alternative implementations, the adjustment hole is an oblong hole;

[0025] The adjustment hole extends along the length of the second frame.

[0026] In some alternative embodiments, the adjusting element is a rotating block; and / or,

[0027] The first paragraph is longer than the second paragraph.

[0028] In some alternative implementations, both the first and second borders are integrally formed structures.

[0029] In some alternative implementations, the screen frame also includes a pull rod that connects to the end of the display film;

[0030] A notch is made in the side frame, located at the junction of the first and second side frames, through which the tie rod passes to be installed into the side frame.

[0031] In some alternative implementations, the screen frame also includes a blocking block that seals the notch.

[0032] In some alternative implementations, the rotating connector is a pin;

[0033] A first connecting hole is provided on the first frame, and a second connecting hole is provided on the second frame. The rotating connector passes through the first connecting hole and the second connecting hole so that the first frame rotates relative to the second frame.

[0034] Secondly, this application also provides a projection screen, comprising:

[0035] Display membrane;

[0036] An integrated edge frame is provided to surround the outer periphery of the display film. The integrated edge frame includes a first edge frame and a second edge frame, and the second edge frame includes a first segment and a second segment.

[0037] Adjust the rotating component, which is set between the first and second segments, so that the distance between the first and second segments is variable.

[0038] Thirdly, this application also provides a projection system, including a projection device and the aforementioned projection screen, wherein the projection device is used to project a projected image onto the projection screen.

[0039] The projection screen and projection system provided in this application include a projection device and the aforementioned projection screen. The projection device is used to project a projected image onto the projection screen. The projection screen includes: a display film having a projection light-receiving surface; a screen frame including two side frames connected to surround the outer periphery of the display film; each side frame including a first border and a second border rotatably connected; the second border including a first segment and a second segment; and a connecting assembly including: a rotating connector connected to the first segment and the second segment; and an adjusting member located between the first and second segments, wherein the rotating connector is rotatably disposed on the adjusting member and moves on the adjusting member to make the distance between the first and second segments variable.

[0040] The foldable design of the screen frame allows for the folding of the disassembled projection screen, reducing its size for easy installation and minimizing transportation and / or installation volume, thus solving the problem of bringing large-size screens into the home. Furthermore, folding and securing the screen frame during home assembly is simpler, eliminating the need for traditional hinge structures and employing rotating connectors, which are simpler, more ingenious, cost-effective, and significantly improve installation speed. In addition, the interplay of adjusting components and rotating connectors reduces gaps in the second frame after assembly, enhancing post-assembly stability. Attached Figure Description

[0041] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0042] Figure 1 A schematic diagram of the first state of a folding frame provided by the prior art;

[0043] Figure 2 A schematic diagram of a second state of a folding frame provided by the prior art;

[0044] Figure 3 A schematic diagram of the first hinge structure in a folding frame provided by the prior art;

[0045] Figure 4 A cross-sectional schematic diagram of a projection screen provided for the prior art;

[0046] Figure 5 A schematic diagram of a projection screen installed according to existing technology;

[0047] Figure 6 An exploded view of the projection screen provided in an embodiment of this application;

[0048] Figure 7 This is a schematic diagram of the structure of the screen frame in the projection screen provided in the embodiments of this application;

[0049] Figure 8 An exploded view of the screen frame in a projection screen provided in an embodiment of this application;

[0050] Figure 9 This is a schematic diagram of the structure of the display film in the projection screen provided in the embodiments of this application;

[0051] Figure 10 A cross-sectional schematic diagram of the projection screen provided in an embodiment of this application;

[0052] Figure 11 This is an assembly diagram of the side frame and connecting components in a projection screen provided in an embodiment of this application;

[0053] Figure 12 A schematic diagram of the first state of the side frame in the projection screen provided in an embodiment of this application;

[0054] Figure 13 A schematic diagram of the second state of the side frame in the projection screen provided in an embodiment of this application;

[0055] Figure 14 An assembly diagram of the vertical beam, connecting components, and side frame in a projection screen provided in an embodiment of this application;

[0056] Figure 15 A schematic diagram showing that the vertical beam in the projection screen can rotate, as provided in an embodiment of this application;

[0057] Figure 16 A first-view assembly diagram of the second frame and connecting components in a projection screen provided in an embodiment of this application;

[0058] Figure 17 A schematic diagram of the assembly of the second frame and the connecting component in the projection screen provided in the embodiments of this application from a second perspective;

[0059] Figure 18 A cross-sectional view of the second border and connecting components in a projection screen provided in an embodiment of this application;

[0060] Figure 19 A schematic diagram of the third state of the side frame in the projection screen provided in an embodiment of this application;

[0061] Figure 20 A schematic diagram of the fourth state of the side frame in the projection screen provided in an embodiment of this application;

[0062] Figure 21 An assembly diagram of the first and second borders in a projection screen provided in an embodiment of this application;

[0063] Figure 22 An assembly diagram of the vertical beam and the second frame in the projection screen provided in an embodiment of this application;

[0064] Figure 23 An assembly diagram of the first and second segments in a projection screen provided in an embodiment of this application;

[0065] Figure 24 A partial schematic diagram of the screen frame in the projection screen provided in the embodiments of this application;

[0066] Figure 25A partial cross-sectional view of the screen frame in the projection screen provided in an embodiment of this application;

[0067] Figure 26 This is a schematic diagram of the first state assembly of the display film and the pull rod in the projection screen provided in the embodiments of this application;

[0068] Figure 27 This is a schematic diagram of the second state assembly of the display film and the pull rod in the projection screen provided in an embodiment of this application;

[0069] Figure 28 This is a schematic diagram of the first state assembly of the display diaphragm and fastening screw in the projection screen provided in the embodiments of this application;

[0070] Figure 29 This is a schematic diagram of the second state assembly of the display diaphragm and fastening screw in the projection screen provided in an embodiment of this application;

[0071] Figure 30 This is a schematic diagram of the third state assembly of the display diaphragm and fastening screw in the projection screen provided in an embodiment of this application;

[0072] Figure 31 An exploded view of the gap and the blockage in the projection screen provided in an embodiment of this application;

[0073] Figure 32 This is a schematic diagram of the assembly between the notch and the block in the projection screen provided in an embodiment of this application.

[0074] Explanation of reference numerals in the attached figures:

[0075] 100-Projection screen;

[0076] 110 - Display diaphragm; 111 - Diaphragm body; 112 - Synthetic fabric; 1121 - Fabric bag; 101 - Inner frame; 102 - Outer frame;

[0077] 120 - Screen frame; 121 - First bezel; 1211 - First connecting hole; 122 - Second bezel; 1221 - First segment; 12211 - First rotating hole; 12212 - First groove; 1222 - Second segment; 12221 - Second rotating hole; 12222 - Second groove; 1223 - Second connecting hole; 123 - Vertical beam; 124 - Pull rod; 125 - Notch; 126 - Block; 127 - Mounting screw; 128 - Fastening screw; 129 - Lever;

[0078] 130 - Connecting assembly; 131 - Rotating connector; 132 - Adjusting component; 1321 - First adjusting hole; 1322 - Second adjusting hole;

[0079] 200 - Folding frame; 210 - Long side frame; 220 - Short side frame; 230 - First hinge structure. Detailed Implementation

[0080] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application. All other obtained embodiments are within the scope of protection of this application. In the absence of conflict, the following embodiments and features can be combined with each other.

[0081] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0082] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0083] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0084] Currently, due to the large size of the entire screen frame, the transportation and installation process is quite inconvenient during in-home installation. Therefore, the screen frame can be designed as a foldable structure, such as the foldable frame 200.

[0085] Figure 1 A schematic diagram of the first state of a folding frame provided for the prior art. Figure 2 A schematic diagram of a second state of a folding frame provided by the prior art. Figure 3 A schematic diagram of the first hinge structure in a folding frame provided in the prior art. Figure 4 A cross-sectional schematic diagram of a projection screen provided for the prior art. Figure 5 A schematic diagram of the projection screen after installation, based on existing technology.

[0086] like Figures 1 to 5 As shown, the folding frame 200 includes a long-side frame 210 and a short-side frame 220. The long-side frame 210 is folded in half. To fold the folding frame 200 in half, a custom-designed first hinge structure 230 is used, reducing the entrance volume by half and enabling elevator access. Although this solves the entrance problem, the folding frame 200 is relatively large, resulting in a large packaging volume, which is inconvenient for entrance and transportation. Furthermore, each hinge structure consists of multiple components, which increases the variety of materials and structural costs.

[0087] To overcome the shortcomings of existing technologies, the projection screen and projection system provided in this application fold the scattered projection screen through the foldable design of the screen frame. On the one hand, this can reduce the screen's entry volume into the home, making it convenient to enter the home, reducing the transportation and / or entry volume, and solving the problem of bringing large-size screens into the home. On the other hand, folding and fixing the screen frame is simple when assembling it in the user's home. It eliminates the need for traditional hinge structure folding and adopts rotating connectors, which is simpler and more ingenious, reduces costs, and can significantly improve installation speed.

[0088] The contents of this application will now be described in detail with reference to the accompanying drawings, so that those skilled in the art can have a clearer and more detailed understanding of the contents of this application.

[0089] Figure 6 This is an exploded view of the projection screen provided in an embodiment of this application. Figure 7 This is a schematic diagram of the screen frame structure in the projection screen provided in an embodiment of this application. Figure 8 This is an exploded view of the screen frame in the projection screen provided in an embodiment of this application.

[0090] like Figures 6 to 8 As shown, this application embodiment provides a projection screen 100, including:

[0091] Display diaphragm 110, display diaphragm 110 has a projection light-receiving surface;

[0092] The screen frame 120 includes two side frames, which are integral side frames. The two side frames are connected to surround the outer perimeter of the display film 110. The side frame includes a first border 121 and a second border 122, wherein the length of the second border 122 is longer than the length of the first border 121.

[0093] The connecting assembly 130 includes at least one rotatable connector 131 that passes through a first frame 121 and a second frame 122 to rotatably connect the first frame 121 relative to the second frame 122.

[0094] The second frame 122 includes a first segment 1221 and a second segment 1222, and the first segment 1221 and the second segment 1222 are respectively connected to the rotating connector 131;

[0095] like Figure 16 As shown, the connecting assembly 130 also includes an adjusting member 132, which is located between the first segment 1221 and the second segment 1222 and is used to adjust the distance between the first segment 1221 and the second segment 1222. The rotating connecting member 131 is rotatably disposed on the adjusting member 132 and moves on the adjusting member 132 so that the distance between the first segment 1221 and the second segment 1222 is variable.

[0096] Part of the rotating connector 131 rotatably connects the first segment 1221 and the first end of the adjusting member 132 so that the first segment 1221 rotates relative to the second segment 1222. Another part of the rotating connector 131 rotatably connects the second segment 1222 and the second end of the adjusting member 132 so that the second segment 1222 rotates relative to the first segment 1221.

[0097] By adopting the above-mentioned configuration, namely, by using the foldable design of the screen frame 120 to fold the scattered projection screen 100, the screen's entry volume can be reduced, making it convenient to enter the home, reducing the transportation and / or entry volume, and solving the problem of bringing large-size screens into the home. On the other hand, folding and fixing the screen frame 120 is simple when assembling it in the user's home. It eliminates the need for traditional hinge structure folding and adopts rotating connector 131, which is simpler and more ingenious, reduces costs, and can significantly improve installation speed. In addition, by adjusting the component 132 and rotating connector 131 working together, the gap of the second frame 122 is reduced after assembly, thereby improving the stability after assembly.

[0098] Specifically, traditional hinge structures, such as the first hinge structure 230, the second hinge structure 240, and the third hinge structure 250.

[0099] In some optional embodiments, the screen frame 120 has a flattened state and a folded state. When the screen frame 120 switches from the folded state to the flattened state, the rotating connector 131 moves to the first position, causing the first segment 1221 and the second segment 1222 to move towards each other.

[0100] When the screen frame 120 switches from a flat state to a folded state, the rotating connector 131 moves to the second position, causing the first segment 1221 and the second segment 1222 to move in opposite directions.

[0101] The first position is the middle of the adjusting component, and the second position is the end of the adjusting component.

[0102] It should be noted that when the screen frame 120 switches from a folded state to a flattened state, the rotating connector 131 located in the first segment 1221 and the rotating connector 131 located in the second segment 1222 both move to the first position. Since the rotating connector 131 located in the first segment 1221 moves, it drives the first segment 1221 to move. Correspondingly, when the rotating connector 131 located in the second segment 1222 moves, it drives the second segment 1222 to move. Therefore, the first segment 1221 and the second segment 1222 move towards each other, thereby reducing the distance between them.

[0103] Similarly, when the screen frame 120 switches from the flat state to the folded state, the rotating connector 131 located in the first segment 1221 and the rotating connector 131 located in the second segment 1222 both move to the second position. At this time, the first segment 1221 and the second segment 1222 move in opposite directions, thereby increasing the distance between them to provide space for folding.

[0104] It should be noted that the following sections will provide a detailed explanation of each structure.

[0105] [Display diaphragm 110]

[0106] Figure 9 This is a schematic diagram of the structure of the display film in the projection screen provided in the embodiments of this application, as shown below. Figure 9 As shown, it can be understood that the front of the display diaphragm 110 is the projection light-receiving surface.

[0107] It should be noted that the display film 110 is typically composed of a rigid layer, a Fresnel structure layer, and a projection layer, etc. It has a certain strength and rigidity, and can maintain a certain degree of verticality in a vertically hanging state, making the display film 110 appear flat. However, due to its remaining flexibility, if there is no support or external interference, the display film 110 may not be able to meet the flatness requirements for display. If the screen is not flat, the laser projection image will be distorted, blurry, have uneven brightness, or suffer other deterioration problems.

[0108] In order to achieve flatness of the display diaphragm 110, in some optional embodiments, the display diaphragm 110 includes a diaphragm body 111 and a synthetic fabric 112 that are bonded together.

[0109] Generally, the diaphragm body 111 is a rigid material, and the synthetic fabric 112 generally has properties such as inelasticity, ultrathinness, density and high strength. When the synthetic fabric 112 and the diaphragm body 111 are bonded together, they can form an integral structure, which facilitates the transmission of force and allows the diaphragm body 111 to stretch in accordance with the deformation of the synthetic fabric 112.

[0110] Specifically, the synthetic fabric 112 can generally be a soft fabric. This allows the synthetic fabric 112 to transmit force well when stretched, and it is relatively stable, making it adaptable to a wide range of environments. For example, it can maintain good flatness and reliability in an ambient temperature range of -10℃ to 40℃.

[0111] [Screen Frame 120]

[0112] Figure 10 This is a cross-sectional schematic diagram of the projection screen provided in an embodiment of this application. Figure 11 This is an assembly diagram of the side frame and connecting components in the projection screen provided in an embodiment of this application. Figure 12 This is a schematic diagram of the first state of the side frame in the projection screen provided in an embodiment of this application. Figure 13 This is a schematic diagram of the second state of the side frame in the projection screen provided in the embodiments of this application.

[0113] refer to Figures 6 to 13 It should be noted that the screen frame 120 is generally a frame structure, and the screen frame 120 forms a rectangular or square hollow area. This hollow area can be used to place the display film 110, and the screen frame 120 can surround the edge of the display film 110 to provide protection for the display film 110. The screen frame 120 and the display film 110 are connected and tensioned by a deformable or displaceable tensioning module.

[0114] In some examples, the screen frame 120 may be a metal component, and its material may include one or more of copper, iron, aluminum, tin, and lead.

[0115] In other examples, the screen frame 120 may be made of plastic.

[0116] It should be noted that the specific material of the screen frame 120 is not subject to further restrictions in this embodiment.

[0117] Of course, during manufacturing, the screen frame 120 can also be made of steel plate, plastic or synthetic materials, provided that the strength is guaranteed.

[0118] In order to facilitate convenient installation and quick assembly of the projection screen 100, the screen frame 120 can be two side frames. The first side frame 121 and the second side frame 122 of the side frame can be folded to reduce the size of the installation.

[0119] It should be noted that the second border 122 can be a long border, and the first border 121 can be a short border. The first border 121 and the second border 122 are assembled together to form a side frame, and the two side frames are assembled together to form a screen frame 120. In practice, the size can be taken into account, and no further restrictions are imposed here.

[0120] Both the first frame 121 and the second frame 122 can be folded, which facilitates the folding of the scattered frame structure. On the one hand, it reduces the volume of transportation and / or entry into the home, and on the other hand, it enables the folded screen frame 120 to be quickly assembled, thereby improving the product's appeal.

[0121] Furthermore, it should be noted that, in order to further improve the ease of assembly, the side frame can be designed as an integrated side frame. Compared with the inner and outer frames in the existing structure, the side frame of this application is designed as an integrated structure of inner and outer frames, which eliminates the procedure of assembling the inner frame first and then assembling the outer frame, reduces assembly and disassembly processes, and further improves work efficiency.

[0122] [Connection Component 130]

[0123] It should be noted that replacing the existing hinge structure with a rotating connector 131 not only ensures that the first frame 121 can rotate relative to the second frame 122 to achieve the foldable effect of the screen frame 120, but also reduces the material cost required for folding.

[0124] like Figures 11 to 13 As shown, specifically, the rotating connector 131 passes through the first frame 121 and the second frame 122, and can rotate relative to the first frame 121 and the second frame 122 respectively.

[0125] The foldable integrated screen frame 120 mainly serves as a skeleton and decoration, supporting the stability and appearance of the entire display film 110. In this application, the integrated frame consists of two identical side frames, each composed of structural components such as a first frame 121, a second frame 122, a vertical beam 123, and angle irons.

[0126] In some alternative embodiments, the rotating connector 131 is a pin;

[0127] A first connecting hole 1211 is provided on the first frame 121, and a second connecting hole 1223 is provided on the second frame 122. The rotating connector 131 passes through the first connecting hole 1211 and the second connecting hole 1223 so that the first frame 121 rotates relative to the second frame 122.

[0128] It should be noted that the rotating connector 131 is designed as a pin, which can further reduce material costs. The first connecting hole 1211 and the second connecting hole 1223 can be round holes to allow the rotating connector 131 to pass through and rotate within them.

[0129] In some alternative embodiments, both the first border 121 and the second border 122 include an inner border segment and an outer border segment.

[0130] The inner border segment and the outer border segment are connected as a whole, wherein the outer border segment wraps around at least part of the inner border segment.

[0131] It should be noted that the inner and outer frame segments are connected as a single unit, which allows for fast assembly and a small number of materials, enabling small-volume packaging, convenient transportation and home delivery. The highly integrated folding side frame allows for fast assembly, while also being simple, reliable, and low-cost.

[0132] Specifically, the integrated inner and outer frame reduces the packaging and delivery volume by folding, and the display film 110 is in a rolled-up form. By reducing the volume of these two main parts, the delivery and transportation volume is reduced.

[0133] like Figure 4 and Figure 5 As shown, in the existing structure, after the projection screen is installed on the wall, only the side and front of the outer frame 102 can be observed, i.e., the two surfaces marked with dashed lines in the cross-section diagram. Therefore, the inner frame 101 and the outer frame 102 can be distinguished by whether they are visible after being mounted on the wall. The component containing the visible side and front is called the outer frame 102, and the invisible internal component is called the inner frame 101. The existing structure consists of two separate structural components. During assembly, the inner frame 101 must be assembled first, followed by the outer frame 102.

[0134] like Figure 10 As shown, the first border 121 and the second border 122 in this application are both integrally formed structures, which means that the inner border segment and the outer border segment of the first border 121 are integrally formed structures. Therefore, the assembly speed of this application is fast.

[0135] The screen frame 120 in this embodiment integrates the functions of both inner and outer frames, designing the inner and outer frames as a single component. That is, the screen frame 120 is a one-piece molded structure. Specifically, the first border 121 and the second border 122 are both one-piece molded structures. Furthermore, the other structures within the integrated frame, due to the interaction between the display film 110 and the wall surface, form the interior of the frame, providing structural support. In other words, the screen frame 120 simultaneously supports the stability and aesthetic appearance of the entire screen.

[0136] In some examples, the outer border segment surrounds the outer perimeter of the inner border segment, and the inner and outer border segments are made of the same material.

[0137] Regarding the integrated connection of the inner and outer frame segments, it can be understood that before leaving the factory, these two can be connected into a single structure by welding or other connectors. After folding and rolling the display film 110 into the home, assembly is carried out. When assembling at the user's home, it is only necessary to assemble the side frame from the folded state to the unfolded state, and then assemble the two unfolded side frames. There is no need to assemble the inner frame first and then the outer frame, so the overall assembly process is less.

[0138] Figure 14 This is an assembly diagram of the vertical beam, connecting components, and side frame in the projection screen provided in an embodiment of this application. Figure 15 This is a schematic diagram showing that the vertical beam in the projection screen provided in the embodiment of this application can rotate.

[0139] like Figure 14 and Figure 15 As shown, in some alternative embodiments, the screen frame 120 further includes at least one vertical beam 123, which is supported in the middle of the screen frame 120.

[0140] Rotate the connector 131 through the vertical beam 123 and the second frame 122 so that the vertical beam 123 rotates relative to the second frame 122.

[0141] It should be noted that the purpose of the vertical beam 123 is to enhance the support stability of the screen frame 120. Considering portability, the vertical beam 123 can be folded.

[0142] Specifically, the vertical beam 123 is rotatably mounted on the second frame 122 via the rotating connector 131. When the vertical beam 123 is folded, it can be folded to the second frame 122 or hidden inside the second frame 122. When the vertical beam 123 is unfolded, it can be connected between two opposite second frames 122 to enhance the support strength.

[0143] In some embodiments, there are two vertical beams 123 located in the middle of the screen frame 120. One vertical beam 123 is rotatably mounted on the second frame 122 in one side frame via a rotating connector 131, and the other vertical beam 123 is rotatably mounted on the second frame 122 in another side frame via a rotating connector 131. The two vertical beams 123 are staggered so that they can be folded onto different second frames 122, making the structure more compact.

[0144] Figure 16 This is a first-view assembly diagram of the second frame and connecting components in a projection screen provided in an embodiment of this application. Figure 17 This is an assembly diagram of the second frame and the connecting component from a second perspective in a projection screen provided in an embodiment of this application. Figure 18 This is a cross-sectional view of the second border and connecting components in a projection screen provided in an embodiment of this application. Figure 19 This is a schematic diagram of the third state of the side frame in the projection screen provided in an embodiment of this application. Figure 20 This is a schematic diagram of the fourth state of the side frame in the projection screen provided in the embodiments of this application.

[0145] like Figures 16 to 20 As shown, in some optional embodiments, the second frame 122 includes a first segment 1221 and a second segment 1222, and a rotating connector 131 is rotatably connected between the first segment 1221 and the second segment 1222 so that the first segment 1221 and the second segment 1222 can be rotated and folded.

[0146] It should be noted that the rotating connector 131 passes through the first segment 1221 and the second segment 1222, and can rotate relative to the first segment 1221 and the second segment 1222 respectively. Replacing the existing hinge structure with the rotating connector 131 ensures that the second frame 122 can be folded to achieve the foldable effect of the screen frame 120, while reducing the material cost required for folding.

[0147] In some alternative embodiments, the connecting assembly 130 further includes an adjusting member 132 located between the first segment 1221 and the second segment 1222, and used to adjust the distance between the first segment 1221 and the second segment 1222;

[0148] Partial rotating connector 131 rotatably connects the first segment 1221 and the first end of adjusting member 132 so that the first segment 1221 rotates relative to the second segment 1222. Another part rotating connector 131 rotatably connects the second segment 1222 and the second end of adjusting member 132 so that the second segment 1222 rotates relative to the first segment 1221.

[0149] It should be noted that the purpose of the adjusting component 132 is to achieve seamless folding by adjusting the distance between the first segment 1221 and the second segment 1222. Essentially, during assembly, the extended and retracted movement eliminates the folding gap between the first segment 1221 and the second segment 1222.

[0150] In some embodiments, the first end of the adjusting member 132 is located within the first segment 1221, and the second end of the adjusting member 132 is located within the second segment 1222. A rotating connector 131 connects the first segment 1221 and the first end of the adjusting member 132, and can rotate within the first segment 1221 and the first end of the adjusting member 132 to achieve the purpose of rotating the first segment 1221 relative to the second segment 1222. Another rotating connector 131 connects the second segment 1222 and the second end of the adjusting member 132, and can rotate within the second segment 1222 and the second end of the adjusting member 132 to achieve the purpose of rotating the second segment 1222 relative to the first segment 1221, ultimately realizing that the first segment 1221 and the second segment 1222 are foldable.

[0151] In some optional embodiments, at least one adjustment hole is provided on the adjustment member 132, the adjustment hole extends through the opposite sides of the adjustment member 132 along the width direction of the second frame 122, and the rotating connector 131 is movable within the adjustment hole;

[0152] A first rotating hole 12211 is provided on the first section 1221. Part of the rotating connector 131 passes through the first rotating hole 12211 and the adjustment hole, and rotates within the first rotating hole 12211 and the adjustment hole.

[0153] The second section 1222 has a second rotating hole 12221. Another part of the rotating connector 131 passes through the second rotating hole 12221 and part of the adjustment hole, and rotates in the second rotating hole 12221 and the other part of the adjustment hole, so that the first section 1221 and the second section 1222 are folded.

[0154] It should be noted that the setting of the adjustment hole allows the rotating connector 131 to rotate within the adjustment hole while also moving within the adjustment hole. After the second frame 122 is unfolded, it can perform telescopic movement to eliminate the folding gap between the first segment 1221 and the second segment 1222, so as to achieve gapless folding and unfolding of the second frame 122, and further improve the support stability after unfolding and assembly.

[0155] In some embodiments, there are two first rotating holes 12211, and part of the adjusting member 132 is located in the first segment 1221. One of the rotating connecting members 131 passes through one first rotating hole 12211, the adjusting hole and the other first rotating hole 12211 in sequence to satisfy the rotatable setting, and the adjusting member 132 and the first segment 1221 can be connected by the rotating connecting member 131.

[0156] Accordingly, there are two second rotating holes 12221, and another part of the adjusting member 132 is located in the second section 1222. The other rotating connecting member 131 passes through one second rotating hole 12221, the adjusting hole and the other second rotating hole 12221 in sequence to satisfy the rotatable setting, and the adjusting member 132 and the second section 1222 can be connected by the rotating connecting member 131.

[0157] In some optional embodiments, at least one adjustment hole includes a first adjustment hole 1321 and a second adjustment hole 1322, the first adjustment hole 1321 and the second adjustment hole 1322 are spaced apart along the length direction of the adjustment member 132, the position of the first adjustment hole 1321 matches the position of the first segment 1221, and the position of the second adjustment hole 1322 matches the position of the second segment 1222.

[0158] Part of the rotating connector 131 rotates through the first rotating hole 12211 and the first adjusting hole 1321, while another part of the rotating connector 131 rotates through the second rotating hole 12221 and the second adjusting hole 1322.

[0159] It should be noted that, specifically, the first adjustment hole 1321, the first rotation hole 12211 of the first segment 1221, and a rotation connector 131 are matched with each other, and the second adjustment hole 1322, the second rotation hole 12221 of the second segment 1222, and another rotation connector 131 are matched with each other, making the overall structure more compact.

[0160] In some embodiments, the first adjustment hole 1321 and the second adjustment hole 1322 have the same structure, which can further ensure that the movement stroke of one rotating connector 131 in the first adjustment hole 1321 is consistent with the movement stroke of the other rotating connector 131 in the second adjustment hole 1322, so as to improve the effect of gapless folding of the second frame 122.

[0161] Continue to refer to Figures 16 to 18 In some optional embodiments, the first segment 1221 has a first groove 12212, the second segment 1222 has a second groove 12222, the opening of the first groove 12212 is connected to the opening of the second groove 12222 to form a receiving cavity, and the adjusting member 132 is located in the receiving cavity.

[0162] It should be noted that the cavity formed by the first groove 12212 and the second groove 12222 is designed to better accommodate the adjustment member 132, so that the adjustment member 132 can be hidden inside the second frame 122, ensuring the smooth operation of the structure while maintaining a high aesthetic appearance.

[0163] In some embodiments, the size of the receiving cavity is larger than the size of the adjusting member 132 so that the adjusting member 132 can rotate within the receiving cavity, that is, the receiving cavity has space to accommodate the rotation of the adjusting member 132.

[0164] In some alternative implementations, the adjustment hole is an oblong hole;

[0165] The adjustment hole extends along the length of the second frame 122.

[0166] It should be noted that this setting allows the first segment 1221 to move toward the second segment 1222, while the second segment 1222 moves toward the first segment 1221. In other words, the first segment 1221 and the second segment 1222 can move toward each other to reduce the gap between them after unfolding, thus achieving zero-gap unfolding.

[0167] In some alternative embodiments, the adjusting member 132 is a rotating block; and / or,

[0168] The first segment 1221 is longer than the second segment 1222.

[0169] It should be noted that the adjusting component 132 is a rotating block that can be embedded in the second frame 122.

[0170] The design where the length of the first segment 1221 is longer than that of the second segment 1222 can be understood as an asymmetrical arrangement of the first segment 1221 and the second segment 1222, or an asymmetrical folding arrangement of the first segment 1221 and the second segment 1222. The purpose of this arrangement is to enhance the resistance to bending deformation when the second frame 122 is unfolded. In addition, the second segment 1222 can be folded into the first segment 1221, allowing the second frame 122 to be folded and compressed, reducing the space occupied.

[0171] Figure 21 This is an assembly diagram of the first and second borders in a projection screen provided in an embodiment of this application. Figure 22 This is an assembly diagram of the vertical beam and the second frame in the projection screen provided in an embodiment of this application. Figure 23 This is a schematic diagram of the assembly of the first and second segments in the projection screen provided in the embodiments of this application.

[0172] like Figures 19 to 23 As shown, it should be noted that the assembly process of the screen frame 120 is as follows: First, the assembly process of the screen frame 120 is the reverse of the folding process. The frame is unfolded sequentially from the folded position. After the second frame 122 is rotated and unfolded, the two side frames need to be spliced ​​together. After splicing, two mounting screws 127 are fixed at each of the four corners, and a total of eight mounting screws 127 are required at the corners. The corner iron structure has been pre-installed on the screen frame 120 by mounting screws 127, and only the two mounting screws 127 at the other end need to be fixed.

[0173] Then, fix one mounting screw 127 at each of the two vertical beams 123 positions. Two mounting screws 127 are required at each vertical beam 123 position to complete the installation. Since the other end of the vertical beam 123 is folded using the rotating connector 131, only one mounting screw 127 needs to be tightened at the other end. After eliminating the folding gap at the folding position of the second frame 122, rotate the lever 129, and then fix two mounting screws 127 at each of the two folding positions.

[0174] In summary, the screen frame 120 provided in this embodiment requires only 14 mounting screws 127 to complete assembly, which is a small number. It can also be folded seamlessly, has no other loose parts, and allows for fast assembly.

[0175] Figure 24 This is a partial schematic diagram of the screen frame in the projection screen provided in an embodiment of this application. Figure 25 This is a partial cross-sectional view of the screen frame in the projection screen provided in an embodiment of this application. Figure 26 This is a schematic diagram of the first assembly state of the display film and the pull rod in the projection screen provided in an embodiment of this application. Figure 27 This is a schematic diagram of the second state assembly of the display film and the pull rod in the projection screen provided in the embodiment of this application.

[0176] In some alternative embodiments, the screen frame 120 also includes a pull rod 124 that connects to the end of the display diaphragm 110.

[0177] It should be noted that, since the display film 110 has a large area, it usually needs to be stretched by the lever 124 in order to effectively unfold the display film 110 into a flat state. This means that when the lever 124 is pulled, the entire display film 110 is pulled, resulting in higher uniformity.

[0178] In some embodiments, the synthetic fabric 112 has a pouch 1121, through which a pull rod 124 is inserted. The pull rod 124 is then passed through a notch 125 to be installed into the side frame. This process continues until the pull rods are inserted at all four corners of the display film 110. The display film 110 is then initially installed on the integrated screen frame 120 using the pouch 1121 and the pull rod 124. Since the screen frame 120 is placed on the ground, gravity causes the pull rod 124 and the pouch 1121 to be positioned at the bottom of the screen frame 120.

[0179] Figure 28 This is a schematic diagram of the first assembly state of the display diaphragm and fastening screw in the projection screen provided in an embodiment of this application. Figure 29 This is a schematic diagram of the second assembly state of the display diaphragm and fastening screw in the projection screen provided in an embodiment of this application. Figure 30This is a schematic diagram of the third state assembly of the display diaphragm and fastening screws in the projection screen provided in the embodiments of this application.

[0180] Specifically, such as Figures 26 to 30 As shown, the screen frame 120 has a deep groove structure on its side and countersunk holes are machined in. The screen is secured with screws 128 on all four sides.

[0181] A perforated pull rod 124 is inserted into the synthetic fabric 112, with the holes in the synthetic fabric 112 and the pull rod 124 corresponding to each other. Simultaneously, a threaded hole is present at a corresponding position on the screen frame 120. After the synthetic fabric 112, pull rod 124, and threaded hole in the screen frame 120 are aligned, a fastening screw 128 is installed on the screen frame 120. By designing the stroke dimension of the synthetic fabric 112, the display film 110 is continuously tightened. During the tightening process, the fastening screw 128 contacts the pull rod 124, causing the pull rod 124 to move. The pull rod 124 then moves the fabric bag 1121, further stretching the display film 110. Due to the specific design of the total length and width dimensions of the synthetic fabric 112, the film is continuously tightened during the tightening process, thus completing the tensioning of the entire screen film. Until the pull rod 124 is pushed into the rib of the inner frame by the fastening screw 128, the position of the pull rod 124 is completely fixed inside the screen, and the tensioning process of the entire display film 110 is completed, while the stability is increased.

[0182] Figure 31 This is an exploded view of the gap and the blockage in the projection screen provided in an embodiment of this application. Figure 32 This is a schematic diagram of the assembly between the notch and the block in the projection screen provided in an embodiment of this application.

[0183] like Figure 31 and Figure 32 As shown, a notch 125 is made on the side frame. The notch 125 is located at the connection between the first side frame 121 and the second side frame 122. The tie rod 124 passes through the notch 125 to be installed into the side frame.

[0184] In some alternative implementations, the screen frame 120 also includes a block 126 that blocks the notch 125.

[0185] It should be noted that, since the back corner of the screen has a notch 125, only four blocks 126 need to be installed at the corners to decorate the appearance of the corners.

[0186] The projection screen provided in this application includes a display film having a projection light-receiving surface; a screen frame including two side frames connected to surround the outer periphery of the display film, each side frame including a first border and a second border, the first border and the second border being rotatably connected, the second border including a first segment and a second segment; a connecting assembly including a rotating connector, the first segment and the second segment being respectively connected to the rotating connector; and an adjusting member located between the first segment and the second segment, the rotating connector being rotatably disposed on the adjusting member and moving on the adjusting member to make the distance between the first segment and the second segment variable.

[0187] The foldable design of the screen frame allows for the folding of the disassembled projection screen, reducing its size for easy installation and minimizing transportation and / or installation volume, thus solving the problem of bringing large-size screens into the home. Furthermore, folding and securing the screen frame during home assembly is simpler, eliminating the need for traditional hinge structures and employing rotating connectors, which are simpler, more ingenious, cost-effective, and significantly improve installation speed. In addition, the interplay of adjusting components and rotating connectors reduces gaps in the second frame after assembly, enhancing post-assembly stability.

[0188] In addition, such as Figures 6 to 32 As shown, this application embodiment also provides a projection screen 100, including:

[0189] Display diaphragm 110;

[0190] An integrated edge frame is provided to surround the outer periphery of the display film 110. The integrated edge frame includes a first edge frame 121 and a second edge frame 122. The second edge frame 122 includes a first segment 1221 and a second segment 1222.

[0191] Adjust the rotating component, which is set between the first segment 1221 and the second segment 1222, so that the distance between the first segment 1221 and the second segment 1222 is variable.

[0192] The projection screen provided in this application embodiment, through the foldable design of the screen frame, folds the scattered projection screen, which on the one hand reduces the screen's entry volume into the home, making it convenient to enter the home, reducing the transportation and / or entry volume, and solving the problem of bringing large-size screens into the home; on the other hand, folding and fixing the screen frame is simple when assembling it in the user's home, eliminating the need for traditional hinge structures and using rotating connectors, which is simpler and more ingenious, reduces costs, and can significantly improve installation speed. In addition, through the cooperation of the adjusting parts and rotating connectors, the gap of the second frame is reduced after assembly, thereby improving the stability after assembly.

[0193] In addition, this application embodiment also provides a projection system, including a projection device and the above-mentioned projection screen 100, wherein the projection device is used to project a projected image onto the projection screen 100.

[0194] The projection system provided in this embodiment specifically includes a projection device and the projection screen 100 in the aforementioned embodiment 1. The projection device is used to project a projected image onto the display film 110 of the projection screen 100.

[0195] The specific structure, working principle and function of the projection screen 100 have been described in detail in the aforementioned Embodiment 1, and will not be repeated here.

[0196] Specifically, in the projection system of this embodiment, the projection device can be any existing projector, such as a laser projector. The projection device can project a projected image onto the display film 110 of the projection screen 100, so that the display film 110 can display the projected image for people to view.

[0197] The display film 110 in the projection screen 100 can be an optical screen, and the display film 110 can be an optical film mainly composed of a Fresnel lens layer. For example, the display film 110 may include a diffusion layer, a substrate layer and a Fresnel lens layer stacked sequentially along the direction away from the projection screen 100 (or it may also include a substrate layer, a diffusion layer and a Fresnel lens layer stacked sequentially). The substrate layer is a transparent film layer. When displaying an image, the light beam is emitted from the projection screen 100. When it passes through the diffusion layer, the light is dispersed by the diffusion layer and then reflected on the surface of the Fresnel lens layer, so that the user can view the image.

[0198] By folding the screen frame, the disassembled projection screen can be folded, which can reduce the screen's size when brought into the home, making it easier to bring in and reducing the volume of transportation and / or bringing in the home, thus solving the problem of bringing large-size screens into the home. On the other hand, folding and fixing the screen frame is simple when assembling it in the user's home. It eliminates the need for traditional hinge structure folding and adopts rotating connectors, which is simpler and more ingenious, reduces costs, and can significantly improve the installation speed.

[0199] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0200] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0201] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. A projection screen (100), characterized in that The application relates to a screen frame (120) comprising: a display film (110) having a projection light-receiving surface; a screen frame (120) comprising: a side frame surrounding the periphery of the display film (110), the side frame comprising a first side frame (121) and a second side frame (122), the first side frame (121) and the second side frame (122) being rotatably connected, the second side frame (122) comprising a first section (1221) and a second section (1222); a connecting assembly (130) comprising: a rotating connecting piece (131), the first section (1221) and the second section (1222) being connected to the rotating connecting piece (131) respectively; an adjusting piece (132) between the first section (1221) and the second section (1222), the rotating connecting piece (131) being rotatably arranged on the adjusting piece (132) and moving on the adjusting piece (132) to change the distance between the first section (1221) and the second section (1222).

2. The projection screen (100) according to claim 1, characterized in that The screen frame (120) has a flat state and a folded state, when the screen frame (120) is switched from the folded state to the flat state, the rotating connecting piece (131) moves to a first position, driving the first section (1221) and the second section (1222) to move towards each other; when the screen frame (120) is switched from the flat state to the folded state, the rotating connecting piece (131) moves to a second position, driving the first section (1221) and the second section (1222) to move away from each other; wherein the first position is the middle part of the adjusting piece (132), and the second position is the end part of the adjusting piece (132).

3. The projection screen (100) according to claim 1, characterized in that The first section (1221) has a first groove (12212), and the second section (1222) has a second groove (12222), the groove opening of the first groove (12212) and the groove opening of the second groove (12222) are connected to form an accommodating cavity, and the adjusting piece (132) is located in the accommodating cavity.

4. The projection screen (100) according to any one of claims 1-3, characterized in that At least one adjusting hole is formed on the adjusting piece (132), the adjusting hole penetrates through the opposite sides of the adjusting piece (132) along the width direction of the second side frame (122), and the rotating connecting piece (131) is movable in the adjusting hole; a first rotating hole (12211) is formed on the first section (1221), part of the rotating connecting piece (131) passes through the first rotating hole (12211) and the adjusting hole, and rotates in the first rotating hole (12211) and the adjusting hole; a second rotating hole (12221) is formed on the second section (1222), and the other part of the rotating connecting piece (131) passes through the second rotating hole (12221) and part of the adjusting hole, and rotates in the second rotating hole (12221) and the other part of the adjusting hole, so that the first section (1221) and the second section (1222) are folded.

5. The projection screen (100) according to claim 4, characterized in that At least one of the adjusting holes comprises a first adjusting hole (1321) and a second adjusting hole (1322), the first adjusting hole (1321) and the second adjusting hole (1322) are arranged along the length direction of the adjusting member (132) and are spaced apart, the position of the first adjusting hole (1321) matches the position of the first section (1221), and the position of the second adjusting hole (1322) matches the position of the second section (1222); Part of the rotating connecting members (131) rotate through the first rotating hole (12211) and the first adjusting hole (1321), and the other part of the rotating connecting members (131) rotate through the second rotating hole (12221) and the second adjusting hole (1322).

6. The projection screen (100) according to claim 4, characterized in that The adjusting hole is an oblong hole. The adjusting hole extends along the length direction of the second frame (122).

7. The projection screen (100) according to any of the claims 1-3, characterized in that The adjusting member (132) is a rotating block; and / or, The length of the first section (1221) is longer than that of the second section (1222).

8. The projection screen (100) according to any of claims 1-3, characterized in that The first frame (121) and the second frame (122) are integrally formed.

9. The projection screen (100) according to claim 8, characterized in that The screen frame (120) further comprises a pull rod (124) connected to the end of the display film (110); The frame is provided with a notch (125) at the connection between the first frame (121) and the second frame (122), and the pull rod (124) passes through the notch (125) to be installed in the frame.

10. The projection screen (100) according to claim 9, characterized in that The screen frame (120) further comprises a plug (126) plugged in the notch (125).

11. The projection screen (100) according to any of the claims 1-3, characterized in that The rotating connecting member (131) is a pin shaft. The first frame (121) is provided with a first connecting hole (1211), and the second frame (122) is provided with a second connecting hole (1223), the rotating connecting member (131) passes through the first connecting hole (1211) and the second connecting hole (1223) to make the first frame (121) rotate relative to the second frame (122).

12. A projection screen (100), characterized by It comprises: a display film (110); an integral frame surrounding the display film (110), the integral frame comprises a first frame (121) and a second frame (122), the second frame (122) comprises a first section (1221) and a second section (1222); an adjusting rotating member arranged between the first section (1221) and the second section (1222) to make the distance between the first section (1221) and the second section (1222) variable.

13. A projection system, characterized by It comprises a projection device and the projection screen (100) according to any one of claims 1-12, the projection device is used for projecting a projection picture to the projection screen (100).

Images