Projection screen and projection system

Abstract

The application discloses a projection screen and a projection system, and belongs to the field of projection display. The projection screen comprises an inner frame, a carrier part, a curtain sheet, a plurality of pull rods and a plurality of tensioning members. The inner frame comprises a plurality of frame edges connected in sequence, the frame edge is a tubular structure, and the side wall of the frame edge has an opening. The edge part of the carrier part is connected with the pull rod, the pull rod is located in the inner part of the corresponding frame edge, and the edge part of the carrier part extends into the inner part of the frame edge through the opening. Since the frame edge is a tubular structure, the pull rod can be located in the inner part of the frame edge. Therefore, the pull rod in the projection screen can be constrained by the tensioning member and the frame edge, so that the pull rod is not easy to fall off from the inner frame, and the stability of the projection screen is improved. In addition, the structure of the frame edge in the tubular structure is relatively simple, for example, the frame edge can be manufactured by a sheet metal bending process. Therefore, the structure of the projection screen can be effectively simplified by arranging the frame edge in the tubular structure.

Description

Technical Field

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

[0002] Currently, projection screens on the market are mainly divided into two structural types: rigid screens with panel structures and flexible screens with frames. Compared to rigid screens, flexible screens with frames have advantages such as lighter weight, lower cost, and the ability to be transported in disassembled parts. Therefore, flexible screens with frames have higher market competitiveness.

[0003] In related technologies, frame-type flexible curtains mainly consist of an aluminum profile frame, a diaphragm, an adhesive film, a carrier, and springs or ties for tensioning the diaphragm.

[0004] However, the frame-type soft curtain structure in related technologies is complex and has poor stability. Utility Model Content

[0005] This application provides a projection screen and projection system. It can solve the problems of complex structure and poor stability of existing frame-type soft screens.

[0006] In a first aspect, a projection screen is provided, comprising: an inner frame, a carrier part, a screen panel, a plurality of tie rods, and a plurality of tensioning members;

[0007] The inner frame includes: multiple side frames connected end to end, the side frames being tubular structures, and the side walls of the side frames having openings;

[0008] The edge portion of the carrier portion is connected to the plurality of pull rods, and the plurality of pull rods correspond to the plurality of frames. The pull rods are located inside the corresponding frames, and the edge portion of the carrier portion extends into the interior of the frames through the opening.

[0009] The screen panel is fitted to the front of the carrier section;

[0010] Wherein, for any one of the frame edges and the corresponding pull rod, the frame edge and the pull rod are connected by at least two tensioning members.

[0011] Optionally, the frame includes: two first plates arranged opposite to each other, and two second plates arranged opposite to each other; the two sides of the first plates are respectively fixedly connected to one side of the two second plates;

[0012] The arrangement direction of the two first panels is perpendicular to the curtain sheet, and the arrangement direction of the two second panels is parallel to the curtain sheet;

[0013] The first plate closer to the curtain sheet among the two first plates has the opening.

[0014] Optionally, the two second plates are an outer plate and an inner plate, respectively, with the inner plate being closer to the area enclosed by the inner frame than the outer plate.

[0015] In the arrangement direction of the two second plates, the distance between the opening and the outer plate is less than the distance between the opening and the inner plate.

[0016] Optionally, in the arrangement direction of the two second plates, the distance between the opening and the inner plate is greater than the width of the pull rod;

[0017] The tensioning member passes through the inner side plate and connects to the pull rod. The tensioning member is used to adjust the distance between the pull rod and the inner side plate in the arrangement direction of the two second plates.

[0018] Optionally, the frame includes: a third plate and two oppositely arranged fourth plates; both sides of the third plate are fixedly connected to the same side of the two fourth plates respectively; the opening is located between the sides of the two fourth plates opposite to the third plate.

[0019] Optionally, in the direction perpendicular to the third plate, the width of the fourth plate is greater than the width of the pull rod;

[0020] The tensioning member passes through the third plate and connects to the pull rod, and the tensioning member is used to adjust the distance between the pull rod and the third plate in a direction perpendicular to the third plate.

[0021] Optionally, the edge of the carrier portion has multiple pockets, and each of the multiple pockets corresponds to a multiple pull rod. At least a portion of the pull rod is inserted into the pocket to connect with the carrier portion.

[0022] Optionally, the frame has at least two first openings, the pocket has at least two second openings, and the pull rod has at least two connecting holes; the at least two first openings and the at least two second openings are connected in a one-to-one correspondence, and the at least two second openings and the at least two connecting holes are connected in a one-to-one correspondence.

[0023] The tensioning member passes through the first opening and the second opening in sequence and then connects to the connecting hole.

[0024] Optionally, the inner frame is a frame structure made of steel or iron.

[0025] In a second aspect, a projection system is provided, comprising: a projection device and a projection screen as described above, the projection device being used to project a projected image onto a screen of the projection screen.

[0026] The beneficial effects of the technical solutions provided in this application include at least the following:

[0027] Because the frame is tubular, the tie rod can be located inside the frame. Therefore, the tie rod in the projection screen can be constrained not only by tensioning components but also by the frame itself, ensuring it doesn't easily detach from the inner frame and thus improving the stability of the projection screen. Furthermore, the tubular frame structure is relatively simple; for example, it can be manufactured using sheet metal bending processes. Therefore, using a tubular frame structure effectively simplifies the projection screen's structure. Attached Figure Description

[0028] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0029] Figure 1 This is a schematic diagram of a rigid curtain wall structure with a plate-like structure in related technologies;

[0030] Figure 2 This is a schematic diagram of a frame-type soft screen structure in related technologies;

[0031] Figure 3 This is a schematic diagram of a projection screen structure provided in an embodiment of this application;

[0032] Figure 4 This is a schematic diagram of a border structure provided in an embodiment of this application;

[0033] Figure 5 This is a schematic diagram of a partial projection screen structure provided in an embodiment of this application;

[0034] Figure 6 This is a schematic diagram of a cross-sectional structure of a projection screen provided in an embodiment of this application;

[0035] Figure 7 This is a schematic diagram of another projection screen cross-sectional structure provided in an embodiment of this application;

[0036] Figure 8 This is a schematic diagram of another border structure provided in an embodiment of this application;

[0037] Figure 9 This is another schematic diagram of the cross-sectional structure of a projection screen provided in the embodiments of this application;

[0038] Figure 10This is a schematic diagram of another projection screen structure provided in an embodiment of this application;

[0039] Figure 11 This is a schematic diagram of another projection screen structure provided in the embodiments of this application. Detailed Implementation

[0040] To make the objectives, technical solutions, and advantages of this application clearer, the embodiments of this application will be described in further detail below with reference to the accompanying drawings.

[0041] Currently, projection screens on the market include laser TV screens. Structurally, projection screens are mainly divided into two types: rigid screens with a panel structure and flexible screens with a frame structure.

[0042] Figure 1 This is a schematic diagram of a rigid curtain wall structure with a panel-like structure in related technologies. Please refer to [link / reference]. Figure 1 The rigid curtain wall 100 with a panel structure mainly includes: a diaphragm 110, double-sided adhesive 120, a honeycomb aluminum panel 130, and a decorative frame 140.

[0043] Figure 2 This is a schematic diagram of a frame-type flexible screen structure in related technologies. Please refer to [link / reference]. Figure 2 The frame-type flexible screen 200 mainly includes: an outer frame 210, a spring 220, an inner frame 230, a diaphragm 240, a carrier portion 250, and a pull rod. The carrier portion 250 is attached to the front of the inner frame 230, and the portion of the carrier portion 250 located on the front of the inner frame 230 is used to support the diaphragm 240. The pull rod can be placed on the back of the inner frame 230 and connected to the edge of the carrier portion 250. One end of the spring 220 is hooked to the pull rod, and the other end is hooked to the back of the inner frame 230, thereby providing tension to the portion of the carrier portion 250 located on the front of the inner frame 230 to ensure a high degree of flatness of the diaphragm 240.

[0044] While rigid screens with a panel structure offer superior strength, thinness, and overall flatness, the increasing size of laser TV screens (over 100 inches) presents challenges for installation and significantly increases the cost of honeycomb aluminum panels. Especially given the current substantial price reductions in large-size laser TV screens, the high cost of honeycomb aluminum panels greatly diminishes the market competitiveness of laser TVs.

[0045] Aluminum profiles are used as the frame material for frame-type flexible screens 200 due to their advantages of light weight, ease of processing, ability to mold complex cross-sections, mature surface treatment technology, and ease of creating aesthetically pleasing surfaces. The inner frame 230 of the frame-type flexible screen 200 currently uses aluminum as the frame material. By designing the profile cross-sectional shape, the structural strength of the profile and the functional areas are improved. Compared to the panel-structured rigid screen 100, the frame-type flexible screen 200 has the advantages of light weight, low cost, and the ability to be transported in disassembled parts. Furthermore, it solves the problem of difficult installation of large-size screens in homes during terminal assembly.

[0046] However, the tie rods in the current frame-type soft screen 200 are located on the back of the inner frame 230 and can only be restrained by the spring 220. Their stability is poor and they are very easy to fall off the inner frame 230.

[0047] Furthermore, with the increasing size of laser TV screens, especially the growing demand for screens of 120 inches and above, the strength requirements for aluminum profile frames are becoming increasingly stringent. This necessitates larger wall thicknesses and cross-sectional areas in the design of aluminum profiles to meet these higher strength demands. Ultimately, this leads to a significant increase in costs and reduces market competitiveness.

[0048] This application provides a projection screen and a projection system that can solve the problems in the aforementioned related technologies.

[0049] Figure 3 This is a schematic diagram of a projection screen structure provided in an embodiment of this application. Please refer to... Figure 3 One embodiment of this application provides a projection screen 300, including: an inner frame 310, a carrier part 320, a screen 330, a plurality of pull rods 340 and a plurality of tensioning members 350.

[0050] The inner frame 310 includes multiple borders 311 connected sequentially from end to end. For a clearer view of the border structure, please refer to [reference needed]. Figure 4 , Figure 4 This is a schematic diagram of a frame structure provided in an embodiment of this application. The frame 311 can be a tubular structure, and the sidewall of the frame 311 has an opening K. For example, the frame 311 can be a tubular structure with equal wall thickness.

[0051] The edge portion of the carrier portion 320 is connected to a plurality of pull rods 340, and the plurality of pull rods 340 correspond to a plurality of frame 311. The pull rods 340 are located inside the corresponding frame 311, and the edge portion of the carrier portion 320 extends into the interior of the frame 311 through the opening K.

[0052] The back of the screen 330 is attached to the front of the carrier 320, and the front of the screen 330 is the projection light-receiving surface.

[0053] Specifically, for any frame 311 and its corresponding pull rod 340, the frame 311 and the pull rod 340 are connected by at least two tensioning members 350.

[0054] In summary, in this application, because the frame has a tubular structure, the tie rod can be located inside the frame. Therefore, the tie rod in the projection screen can be constrained not only by tensioning components but also by the frame itself, ensuring that the tie rod is not easily detached from the inner frame, thereby improving the stability of the projection screen. Furthermore, the tubular frame structure is relatively simple; for example, the frame can be manufactured using sheet metal bending processes. Therefore, by setting a tubular frame structure, the structure of the projection screen can be effectively simplified.

[0055] In some feasible implementations, the inner frame 310 is a frame structure made of steel or iron.

[0056] By using a frame structure made of steel or iron for the inner frame 310, compared to a frame structure made of aluminum, the structural strength of the inner frame 310 can be improved, making it easier to support the large-size projection screen 300 and ensuring the tension of the screen 330 in the large-size projection screen 300.

[0057] When the inner frame 310 is a frame structure made of steel or iron, the structural design of the inner frame 310 can be simplified, that is, the structural design of the frame 311 can be simplified. The frame 311 does not need to have a complex cross section, nor does it need to have some special structure to enhance strength. The support strength of the projection screen 300 can be met by the tubular frame 311 alone.

[0058] In this embodiment, the projection screen 300 includes a plurality of levers 340 and a plurality of bezels 311. The plurality of bezels 311 can be, for example, three, four, five, or six, and the plurality of levers 340 can be, for example, two, three, four, or five. The plurality of bezels 311 and the plurality of levers 340 can be configured in a one-to-one correspondence; for example, the number of bezels 311 and the number of levers 340 can both be four. In other possible implementations, the plurality of bezels 311 and the plurality of levers 340 can also be configured in a non-one-to-one correspondence; for example, the number of bezels 311 can be four, and the number of levers 340 can be two, or for example, the number of bezels 311 can be three, and the number of levers 340 can be four.

[0059] For example, in this embodiment of the application, the projection screen 300 includes four pull rods 340 and four frames 311, with each pull rod 340 and frame 311 corresponding to the other. The four pull rods 340 are respectively connected to the four edges of the carrier portion 320 to form a rectangular or approximately rectangular screen assembly. Correspondingly, the four frames 311 enclose a rectangular or approximately rectangular inner frame 310.

[0060] Please see Figure 4 In some feasible implementations, for any one of the frame 311 in the inner frame 310, the frame 311 includes two first plates B1 disposed opposite to each other and two second plates B2 disposed opposite to each other. The two sides of the first plates B1 are respectively fixedly connected to one side of the two second plates B2.

[0061] The two first panels B1 are arranged perpendicular to the screen panel 330, and the two second panels B2 are arranged parallel to the screen panel 330.

[0062] The first plate B1 closest to the screen 330 among the two first plates B1 has an opening K.

[0063] The arrangement direction of the two first plates B1 is perpendicular to the screen panel 330. In this way, the first plate B1 closest to the screen panel 330 has an opening K, which can reduce the area of ​​the carrier part 320, improve the utilization rate of the carrier part 320, reduce costs, and facilitate increasing the screen ratio of the screen panel 330 attached to the carrier part 320.

[0064] For example, in the embodiments of this application, the carrier portion 320 can be a synthetic fabric, the screen 330 can be an optical film, and the screen 330 can be an optical film made of a soft material.

[0065] The two first plates B1 and two second plates B2 arranged opposite each other can be, for example, arranged with the two first plates B1 being parallel to each other and the two second plates B2 being symmetrically inclined. In this case, the two first plates B1 and the two second plates B2 enclose a trapezoidal or approximately trapezoidal tubular structure. Alternatively, the two first plates B1 and the two second plates B2 can both be arranged with parallel to each other, forming a rectangular or approximately rectangular tubular structure.

[0066] For example, in the embodiments of this application, the two first plates B1 and the two second plates B2 are arranged opposite to each other and distributed in parallel to facilitate the installation of the projection screen 300.

[0067] Figure 5 This is a schematic diagram of a partial projection screen structure provided in an embodiment of this application. Figure 5 The image mainly shows the carrier section 320 and multiple pull rods 340 in the projection screen 300.

[0068] Please see Figure 5In some feasible embodiments, the edge of the carrier portion 320 has a plurality of pockets 321, and the plurality of pockets 321 correspond one-to-one with a plurality of pull rods 340, at least a portion of the pull rods 340 being inserted into the pockets 321 to connect with the carrier portion 320.

[0069] The pocket 321 on the edge of the carrier part 320 provides a temporary fixing space for the pull rod 340, and also facilitates the insertion of the pull rod 340 into the corresponding pocket 321 by means of plugging, so as to connect the pull rod 340 and the edge part of the carrier part 320.

[0070] After the pull rod 340 is inserted into the pocket 321, it is connected to the edge of the carrier part 320. At this time, along the extension direction or length direction of the pull rod 340, the frame 311 is inserted into the outside of the pocket 321. During the insertion of the frame 311, the corresponding pocket 321 and the pull rod 340 inside the pocket 321 can be easily fitted into the frame 311 through the opening K on the side wall of the frame 311. After the frame 311 is properly inserted into the outside of the corresponding pocket 321, the corresponding frame 311, pocket 321, and pull rod 340 can be connected by the tensioning member 350.

[0071] It is understandable that the opening K on the side wall of the frame 311 is provided to facilitate the entry of the edge portion of the carrier portion 320 (pocket 321 and the pull rod 340 inside the pocket 321) into the interior of the frame 311. Therefore, the length of the opening K along the extension direction of the frame 311 can be the same as the length of the frame 311, or the length of the opening K can be less than the length of the frame 311. When the length of the opening K is less than the length of the frame 311, one end of the opening K is an open section along the length direction of the frame 311, which can be flush with the end of the frame 311, and the other end of the opening K is a closed end, located between the two ends of the frame 311.

[0072] Figure 6 This is a schematic cross-sectional view of a projection screen 300 provided in an embodiment of this application. Please refer to... Figure 6 In some feasible implementations, the two second plates B2 are an outer plate B21 and an inner plate B22, with the inner plate B22 being closer to the area enclosed by the inner frame 310 than the outer plate B21.

[0073] In the arrangement direction of the two second plates B2, the distance L1 between the opening K and the outer plate B21 is less than the distance L2 between the opening K and the inner plate B22.

[0074] By making the distance between the opening K and the outer plate B21 smaller than the distance between the opening K and the inner plate B22 in the arrangement direction of the two second plates B2, the size of the frame 311 in the arrangement direction of the two second plates B2 can be reduced, thus achieving a narrow frame design and increasing the screen ratio of the screen 330 in the projection screen 300.

[0075] Please see Figure 6 In some feasible implementations, in the arrangement direction of the two second plates B2, the distance L2 between the opening K and the inner plate B22 is greater than the width L3 of the tie rod 340.

[0076] The tensioning member 350 passes through the inner plate B22 and connects to the pull rod 340. The tensioning member 350 is used to adjust the distance between the pull rod 340 and the inner plate B22 in the arrangement direction of the two second plates B2.

[0077] By ensuring that the distance between the opening K and the inner panel B22 is greater than the width of the pull rod 340, a certain installation space can be left between the pull rod 340 and the inner panel B22 within the frame 311. This allows the tensioning member 350 to pass through the inner panel and connect to the pull rod 340, and to adjust the distance between the pull rod 340 and the inner panel B22. Figure 6 For example, when the distance between the pull rod 340 and the inner panel B22 is reduced under the action of the tensioning member 350, the tension on the curtain 33 can be increased. Conversely, when the distance between the pull rod 340 and the inner panel B22 is increased under the action of the tensioning member 350, the tension on the curtain 33 can be decreased.

[0078] Understandably, after the four frames 311, four pull rods 340 and four pockets 321 are connected by multiple tensioning parts 350, the screen 330 on the carrier part 320 is also tightened. That is, the screen 330 is in a flat state at this time, which can ensure the tension on the screen 330 and thus ensure the quality of the projected image displayed by the screen 330.

[0079] Figure 7 This is a schematic diagram of another projection screen cross-sectional structure provided in an embodiment of this application. Please refer to [link / reference]. Figures 6-7 In some feasible embodiments, the frame 311 has at least two first openings K1, the pocket 321 has at least two second openings K2, and the pull rod 340 has at least two connecting holes K3. The at least two first openings K1 are connected to the at least two second openings K2 in a one-to-one correspondence, and the at least two second openings K2 are connected to the at least two connecting holes K3 in a one-to-one correspondence.

[0080] Among them, the tensioning member 350 passes through the first opening K1 and the second opening K2 in sequence and then connects to the connecting hole K3.

[0081] For example, the tensioning member 350 is a tensioning screw, and the connecting hole K3 is a threaded hole. The tensioning member 350 passes through the first opening K1 and the second opening K2 in sequence and is threadedly connected to the connecting hole K3 to connect the inner plate B22 and the pull rod 340, and to adjust the distance between the inner plate B22 and the pull rod 340. Connecting the inner plate B22 and the pull rod 340 with the tensioning member 350 can not only ensure the connection stability between the inner plate B22 and the pull rod 340, but also simplify the installation process of the projection screen 300.

[0082] It is understandable that the tension or degree of tension of the curtain sheet 330 on the carrier section 320 can also be adjusted during the process of adjusting the distance between the inner side plate B22 and the tie rod 340.

[0083] Figure 8 This is a schematic diagram of another border structure provided in an embodiment of this application. Please refer to... Figure 8 In other feasible embodiments, the frame 311 includes a third plate B3 and two opposing fourth plates B4. The two sides of the third plate B3 are respectively fixedly connected to the same side of the two fourth plates B4. An opening K is located between the sides of the two fourth plates B4 opposite to the third plate B3.

[0084] By using two opposing fourth plates B4 and a third plate B3 located between and connected to the fourth plates B4, a U-shaped or near-U-shaped frame 311 can be formed. This saves raw materials, and the side of the two fourth plates B4 away from the third plate B3 can form a larger opening K, which facilitates the installation of the projection screen 300.

[0085] Figure 9 This is a schematic diagram of another projection screen cross-sectional structure provided in an embodiment of this application. Please refer to... Figure 9 The arrangement direction of the two fourth plates B4 is perpendicular to the screen 330 on the carrier part 320. Along the direction parallel to the screen 330, the third plate B3 is located on the side of the fourth plate B4 close to the area enclosed by the inner frame 310, that is, the opening K is located on the side of the fourth plate B4 away from the area enclosed by the inner frame 310.

[0086] In some feasible implementations, in the direction perpendicular to the third plate B3, the width L4 of the fourth plate B4 is greater than the width L3 of the tie rod 340.

[0087] The tensioning member 350 passes through the third plate B3 and is connected to the pull rod 340. The tensioning member 350 is used to adjust the distance between the pull rod 340 and the third plate B3 in a direction perpendicular to the third plate B3.

[0088] By making the width of the fourth plate B4 greater than the width of the tie rod 340, a certain installation space can be left between the tie rod 340 and the third plate B3 within the frame 311, so that the tensioning member 350 can pass through the third plate B3 and connect with the tie rod 340, and adjust the distance between the tie rod 340 and the third plate B3, thereby adjusting the tension of the curtain sheet 330 on the carrier part 320.

[0089] In some feasible embodiments, the third plate B3 in the frame 311 has at least two first openings K1, the pocket 321 has at least two second openings K2, and the pull rod 340 has at least two connecting holes K3. The at least two first openings K1 are connected to the at least two second openings K2 in a one-to-one correspondence, and the at least two second openings K2 are connected to the at least two connecting holes K3 in a one-to-one correspondence.

[0090] Among them, the tensioning member 350 passes through the first opening K1 and the second opening K2 in sequence and then connects to the connecting hole K3.

[0091] Figure 10 This is a schematic diagram of another projection screen structure provided in an embodiment of this application. Please refer to... Figure 10 The openings K in the frame 311 are all located on the side away from the area enclosed by the inner frame 310.

[0092] Figure 11 This is a schematic diagram of another projection screen structure provided in an embodiment of this application. Please refer to... Figure 11 In some feasible embodiments, the projection screen 300 further includes at least one support beam 360, which is located within the area enclosed by the inner frame 310, and both ends of the support beam 360 are respectively connected to the inner sides of two opposing frame frames 311. It is understood that the inner side of the frame frame 311 is the side closest to the area enclosed by the inner frame 310 along a direction parallel to the screen panel 330 on the carrier portion 320.

[0093] By setting up the support beam 360, the strength between the two relative frame frames 311 can be increased, thereby increasing the strength of the inner frame 310 and better protecting the screen 330 on the carrier part 320.

[0094] Please see Figure 11 To facilitate the differentiation of borders 311 in different positions, the longer border 311 among the four borders 311 is defined as the long border 311a, and the shorter border 311 is defined as the short border 311b.

[0095] The number of support beams 360 can be one, two, three, four, etc., depending on the size and strength requirements of the projection screen 300. This application does not impose specific limitations. For example, for a projection screen 300 larger than 100 inches, the span of the long side frame 311a is relatively large, so two support beams 360 can be used, with each end of the two support beams 360 connected to the two opposite long side frames 311a. As another example, for a projection screen 300 smaller than 100 inches, the width of the long side frame 311a is relatively smaller, so only one support beam 360 can be provided.

[0096] The projection screen 300 also includes multiple adapters 370. Some of the adapters 370 are used to connect adjacent long side frames 311a and short side frames 311b, while the remaining adapters 370 are used to connect adjacent support beams 360 and frames 311. Connecting the long side frames 311a and short side frames 311b, as well as the support beams 360 and adjacent frames 311, using the adapters 370 ensures the overall strength of the inner frame 310.

[0097] For example, the adapter 370 is a right-angle sheet metal part. The adapter 370 is connected to the corresponding long side frame 311a and short side frame 311b by passing screws through the adapter 370. The adapter 370 can also be connected to the corresponding support beam 360 and frame 311 by passing screws through the adapter 370.

[0098] A connector 370 can be provided at each of the four corners of the inner frame 310 to connect the corresponding long side frame 311a and short side frame 311b. A connector 370 can also be provided at both ends of the same side of the support beam 360 to connect the support beam 360 and the corresponding frame 311 (e.g., long side frame 311a).

[0099] In some feasible implementations, the projection screen 300 further includes an outer frame 380, which is fitted onto the outside of the inner frame 310 and can serve a protective and decorative function.

[0100] The outer frame 380 includes multiple borders. To facilitate the distinction between the borders of the outer frame 380 and the borders 311 of the inner frame 310, the borders 311 of the inner frame 310 are defined as the inner borders, and the borders of the outer frame 380 are defined as the outer borders 381.

[0101] The shape of the outer frame 380 corresponds to the shape of the inner frame 310, so that the outer frame 380 can be fitted onto the inner frame 310. The multiple outer borders 381 in the outer frame 380 and the multiple inner borders in the inner frame 310 can correspond one-to-one. For example, the inner frame 310 includes four inner borders, and the outer frame 380 includes four outer borders 381. The outer borders 381 are connected to their corresponding inner borders, for example, by screws. As another example, the inner frame 310 includes four inner borders, which together form a rectangular inner frame 310. The outer borders 381 include a strip-shaped outer border 381 and a U-shaped or approximately U-shaped outer border 381. In this case, the strip-shaped outer border 381 corresponds to one inner border, and the U-shaped or approximately U-shaped outer border 381 corresponds to the other three inner borders.

[0102] The outer frame 380 and support beam 360 in the projection screen 300 can also be made of steel or iron.

[0103] For example, the inner frame 310 can be made of carbon steel, stainless steel, etc.

[0104] Steel tubing offers advantages over aluminum tubing in terms of higher strength and lower cost for the same area. Therefore, this application utilizes the high strength and low cost of steel tubing to replace complex, large-section aluminum profiles as the screen frame structure, and through structural design, achieves the tensioning of the projection screen 300.

[0105] The installation process of the projection screen 300 in this embodiment is described below:

[0106] Installing the screen assembly: The back of the screen 330 is attached to the front of the carrier portion 320. The front of the screen 330 is the projection light-receiving surface. For example, the screen 330 can be glued to the carrier portion 320. Pockets 321 are formed around the carrier portion 320 by stitching. Multiple pull rods 340 are sequentially inserted into the corresponding pockets 321 to assemble the screen assembly. That is, the screen assembly includes: the carrier portion 320, the screen 330, and multiple pull rods 340. The installation process of the screen assembly can be found in [example provided]. Figure 5 .

[0107] Installing the inner frame 310: After the curtain assembly is installed, the multiple frame edges 311 in the inner frame 310 are respectively fitted onto the outside of the pockets 321. Once all the frame edges 311 are fitted onto the pockets 321, the tensioning member 350 passes through the first opening K1 on the frame edge 311, the second opening K2 on the pocket 321, and the connecting hole K3 on the pull rod 340 to connect the frame edge 311 and the pull rod 340. The installation process of the inner frame 310 can be found in [reference needed]. Figure 7After the frame 311 is connected by the tensioner 350 and the corresponding tie rod 340, a support beam 360 is placed in the area enclosed by the inner frame 310 on the back of the carrier part 320. Adjacent frame pieces 311 are connected by the adapter 370, and the adjacent frame pieces 311 and support beams 360 are connected and fixed with screws. The installation process of adjacent frame pieces 311 and adjacent frame pieces 311 and support beams 360 can be found in [reference needed]. Figure 11 .

[0108] Install the outer frame 380, and fit and fix the outer frame 380 onto the outside of the inner frame 310. This completes the installation of the projection screen 300. For example, the installed projection screen 300 can be seen in [reference needed]. Figure 11 The projection screen on the upper middle side displays a 300-degree stereoscopic image.

[0109] The installation process of the projection screen 300 described above is only an illustrative example. When actually installing the projection screen 300, the steps can be adjusted appropriately according to the actual situation, and this application does not impose any restrictions on this.

[0110] In summary, in this application, because the frame has a tubular structure, the tie rod can be located inside the frame. Therefore, the tie rod in the projection screen can be constrained not only by tensioning components but also by the frame itself, ensuring that the tie rod is not easily detached from the inner frame, thereby improving the stability of the projection screen. Furthermore, the tubular frame structure is relatively simple; for example, the frame can be manufactured using sheet metal bending processes. Therefore, by setting a tubular frame structure, the structure of the projection screen can be effectively simplified.

[0111] In another embodiment of this application, a projection system is provided, including: a projection device and a projection screen 300 as described above, wherein the projection device is used to project a projected image onto the screen 330 of the projection screen 300.

[0112] The projection device is the projection screen 300 as described in the previous embodiment. Therefore, the projection system provided in another embodiment of this application also has the advantages of the projection screen 300 as described in the previous embodiment, so it will not be described again here.

[0113] In this application, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. The term "multiple" refers to two or more unless otherwise expressly defined.

[0114] The above description is merely an optional embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A projection screen, characterized in that, include: The structure consists of an inner frame, a carrier section, a curtain panel, multiple tie rods, and multiple tensioning components. The inner frame includes: multiple side frames connected end to end, the side frames being tubular structures, and the side walls of the side frames having openings; The edge portion of the carrier portion is connected to the plurality of pull rods, and the plurality of pull rods correspond to the plurality of frames. The pull rods are located inside the corresponding frames, and the edge portion of the carrier portion extends into the interior of the frames through the opening. The screen panel is fitted to the front of the carrier section; Wherein, for any one of the frame edges and the corresponding pull rod, the frame edge and the pull rod are connected by at least two tensioning members.

2. The projection screen according to claim 1, characterized in that, The frame includes: two first plates arranged opposite each other, and two second plates arranged opposite each other; the two sides of the first plates are respectively fixedly connected to one side of the two second plates; The arrangement direction of the two first panels is perpendicular to the curtain sheet, and the arrangement direction of the two second panels is parallel to the curtain sheet; The first plate closer to the curtain sheet among the two first plates has the opening.

3. The projection screen according to claim 2, characterized in that, The two second plates are an outer plate and an inner plate, respectively, with the inner plate being closer to the area enclosed by the inner frame than the outer plate. In the arrangement direction of the two second plates, the distance between the opening and the outer plate is less than the distance between the opening and the inner plate.

4. The projection screen according to claim 3, characterized in that, In the arrangement direction of the two second plates, the distance between the opening and the inner plate is greater than the width of the pull rod; The tensioning member passes through the inner side plate and connects to the pull rod. The tensioning member is used to adjust the distance between the pull rod and the inner side plate in the arrangement direction of the two second plates.

5. The projection screen according to claim 1, characterized in that, The frame includes: a third plate and two fourth plates arranged opposite to each other; the two sides of the third plate are respectively fixedly connected to the same side of the two fourth plates; the opening is located between the two fourth plates on the side away from the third plate.

6. The projection screen according to claim 5, characterized in that, In the direction perpendicular to the third plate, the width of the fourth plate is greater than the width of the pull rod; The tensioning member passes through the third plate and connects to the pull rod, and the tensioning member is used to adjust the distance between the pull rod and the third plate in a direction perpendicular to the third plate.

7. The projection screen according to any one of claims 1 to 6, characterized in that, The edge of the carrier portion has multiple pockets, and each pocket corresponds to a multiple lever. At least a portion of the lever is inserted into the pocket to connect with the carrier portion.

8. The projection screen according to claim 7, characterized in that, The frame has at least two first openings, the pocket has at least two second openings, and the pull rod has at least two connecting holes; the at least two first openings and the at least two second openings are connected in a one-to-one correspondence, and the at least two second openings and the at least two connecting holes are connected in a one-to-one correspondence. The tensioning member passes through the first opening and the second opening in sequence and then connects to the connecting hole.

9. The projection screen according to any one of claims 1 to 6, 8, characterized in that, The inner frame is a frame structure made of steel or iron.

10. A projection system, characterized in that, include: The projection device and the projection screen according to any one of claims 1 to 9, wherein the projection device is used to project a projected image onto the screen of the projection screen.

Images