Projection screen and projection display device

Abstract

The application discloses a projection screen and a projection display device, wherein the projection screen comprises a display assembly and a frame structure. The frame structure comprises an outer frame and an inner frame, and the outer frame is rotationally connected to the inner frame to form a mounting space between the outer frame and the inner frame. The diaphragm of the display assembly is tensioned by a load-bearing rod, and the load-bearing rod is arranged in the mounting space and connected with the frame structure to tension the diaphragm. In the projection screen and the projection display device disclosed by the application, when a user installs the diaphragm on the frame structure, the user only needs to arrange the load-bearing rod in the mounting space to tension the diaphragm, and then rotates the outer frame to shield the load-bearing rod, so that the convenient installation of the diaphragm is realized. The operation is convenient, the screws and other materials required for the installation of the outer frame are reduced, the user is facilitated to install, and the overall weight of the projection screen is also reduced.

Description

Technical Field

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

[0002] In related technologies, display devices such as televisions and computer screens are typically used to display information, provide entertainment, and facilitate interaction, thus meeting users' needs for information access and entertainment in their daily lives. Taking television as an example, televisions can be further categorized into projection televisions, LCD televisions, and cathode ray tube televisions, among others.

[0003] In a projection TV, the main unit (usually a laser projector) and the screen (such as an anti-glare screen) are combined. Currently, most screens on the market use a frame-type design, which mainly consists of a frame, a diaphragm, and multiple springs and screws used to tension the diaphragm. During installation, the diaphragm is connected to its edge by a support rod, and then the springs hold the support rod in place on the inner frame of the main frame, thus tensioning the diaphragm and securing it in place. An outer frame is then installed around the outer perimeter of the inner frame. Both the support rod and the outer frame require screws for installation, resulting in numerous materials and a cumbersome process, making installation inconvenient for users and impacting the user experience. Utility Model Content

[0004] This application discloses a projection screen and a projection display device to improve the ease of installation of the projection screen.

[0005] To achieve the above objectives, in a first aspect, this application discloses a projection screen, comprising: Display components; A frame structure, wherein the frame structure is mounted on the outer edge of the display component; The display component includes: A diaphragm configured to display an image projected by a projector; A load-bearing rod is provided at the edge of the diaphragm and is connected to the frame structure; The framework structure includes: An inner frame, the outer edge of which forms an installation space, and the load-bearing rod is located in the installation space; An outer frame, one end of which is rotatably connected to the outer edge of the inner frame.

[0006] In the projection screen disclosed in this application, the support rod is set in the installation space formed by the outer edge of the inner frame. Simultaneously, the outer frame is rotatably connected to the outer edge of the inner frame. Thus, rotating the outer frame can either conceal or expose the support rod. In this way, the portion of the support rod that connects to the diaphragm is hidden between the outer and inner frames, resulting in a visually clean appearance where only the diaphragm, inner frame, and outer frame are visible. This enhances the overall aesthetic appeal of the projection display device. Furthermore, the outer frame is rotatably connected to the inner frame, allowing them to be integrated. The rotatable connection between the outer and inner frames can be achieved through methods such as hinges, simplifying installation. In other words, when installing the diaphragm on the frame structure, the user simply places the support rod in the installation space to tension the diaphragm, then rotates the outer frame to conceal the support rod, achieving convenient installation. This not only simplifies operation but also reduces the need for screws and other materials required for outer frame installation, making installation easier for users and reducing the overall weight of the projection screen.

[0007] As some alternative implementations, the outer frame can rotate relative to the inner frame to switch between a first state and a second state; In the first state, the outer frame rotates relative to the inner frame until the other end of the outer frame is away from the inner frame, so as to expose the load-bearing rod; In the second state, the outer frame rotates relative to the inner frame until the other end of the outer frame is close to the inner frame, so as to block the load-bearing rod; The inner frame includes: A first frame, wherein a portion of the diaphragm overlaps the first frame; The epitaxial portion includes: An extension portion is provided on the outer edge of the first frame body along the width direction or the length direction of the first frame body to form the mounting space between the extension portion and the first frame body; The first shaft connection portion is located at the end of the extension portion away from the first frame; The outer frame includes: The second shaft connection is rotatably sleeved on the outer periphery of the first shaft connection; The second frame is connected to the end of the second shaft connection that is away from the first shaft connection; In the second state, the second frame is at least partially attached to the first frame.

[0008] In this application, when connecting the outer frame and the inner frame, an extension is provided on the first frame of the inner frame, forming an installation space between the extension and the first frame of the inner frame, which can be used to accommodate the load-bearing rod. Then, a first shaft connection is made to a second shaft connection of the outer frame, allowing the second frame of the outer frame to be rotatably connected to the extension. This application uses a shaft connection to rotatably connect the outer frame and the inner frame, facilitating rotational connection between the two frames without the need for additional screws, resulting in a simple structure and convenient operation. Furthermore, in the second state, at least a portion of the second frame can overlap the first frame, allowing the load-bearing rod to be positioned at the outer edge of the first frame and concealed by the second frame, thus improving the appearance of the projection screen.

[0009] As some alternative implementations, the support rod is configured to be locked to the extension, or the support rod is configured to be locked to the second frame.

[0010] When the support rod is installed in the installation space, it can be locked to the extension or the second frame to achieve stable installation of the diaphragm and tighten the diaphragm. Furthermore, when the support rod is locked to the second frame or the extension, since both the second frame and the extension are located at the edge of the first frame, the components securing the support rod can be relatively concealed, thus improving the appearance of the projection screen.

[0011] As some alternative implementations, in the second state, the extension direction of the second frame is parallel to the width direction or the length direction of the first frame, and the diaphragm is located between the first frame and the second frame, so that the second frame and the first frame jointly clamp a portion of the diaphragm.

[0012] In the second state, when the second frame overlaps the first frame, because the extension direction of the second frame is parallel to the length or width direction of the first frame, the overlap between the second and first frames is greater, allowing them to jointly hold the membrane. On one hand, the parallel arrangement of the second and first frames prevents the outer frame from protruding relative to the first frame, improving the appearance of the projection screen. On the other hand, the second frame assists in installing the membrane, thereby enhancing the stability of the membrane installation.

[0013] As some alternative implementations, the extension direction of the second frame forms an angle α with the extension direction of the second shaft connection, satisfying: 90° < α < 150°.

[0014] When the extension direction of the second frame is set at an angle α with the second shaft connection, the angle α is controlled between 90° and 150°. On the one hand, this prevents the angle α from being less than 90°. If the angle α is too small, the angle at the connection between the second frame and the second shaft connection will be an acute angle, which may cause the projection screen to scratch during installation. On the other hand, this prevents the angle α from being greater than 150°. If the angle is too large, the second frame will be closer to the first frame, potentially resulting in insufficient installation space. When the outer frame is in its first state, it may be difficult to install the load-bearing rod within the installation space. In other words, by setting the extension direction of the second frame at an angle with the extension direction of the second shaft connection, and controlling the angle α between 90° and 150°, this application not only makes the frame structure appear relatively smooth, avoiding excessive sharp angles that could scratch the user, but also ensures sufficient installation space for installing the load-bearing rod.

[0015] As some alternative implementations, in the first state, the extension direction of the extension portion forms an angle β with the extension direction of the second shaft connection portion, satisfying: 150° < β < 180°.

[0016] In the first state, the extension direction of the extension portion forms an angle with the extension direction of the second shaft connection portion, with the angle β controlled between 150° and 180°. This prevents the angle β from being less than 150°, as this would cause the second frame to be too close to the edge of the first frame, potentially resulting in insufficient installation space. Conversely, it prevents the angle β from being greater than 180°, as this would cause the second frame to be too far from the edge of the first frame, making it difficult to overlap the second frame and effectively shield the load-bearing rod located in the installation space when the outer frame rotates to the second state. In other words, by setting the extension direction of the extension portion at an angle with the extension direction of the second shaft connection portion, with the angle β controlled between 150° and 180°, this application not only maintains sufficient installation space but also allows the second frame to overlap the first frame in the second state, effectively shielding the load-bearing rod.

[0017] As some alternative implementations, the extension portion is provided at the edge of the front side of the first frame along the thickness direction of the projection screen; In the first state, the load-bearing rod is exposed towards the back of the first frame; In the second state, the second frame rotates toward the back of the first frame so that the second frame at least partially overlaps the back of the first frame.

[0018] In this application, the extension is positioned at the edge of the front side of the first frame. This means that when the outer frame rotates, it rotates towards the back of the first frame, thus obscuring the load-bearing rod. Specifically, the load-bearing rod is installed from the back of the first frame, and the second frame rotates from the front of the first frame towards its back. The position where the load-bearing rod is obscured is also on the back of the first frame. When the user uses the projection screen, both the position obscured by the second frame and the position of the load-bearing rod are on the back of the first frame, effectively concealing the overlap between the inner and outer frames and the location of the load-bearing rod, thus improving the appearance of the projection screen.

[0019] As some alternative implementations, the inner frame is provided along the thickness direction of the projection screen as follows: Connection hole; The load-bearing rod is provided with: A threaded hole, which is provided corresponding to the connecting hole; The diaphragm is provided with: A sleeve extends along the edge of the diaphragm, and a support rod passes through the sleeve along the extension direction of the diaphragm. The sleeve has a through hole corresponding to the threaded hole, and the through hole communicates with the connecting hole and the threaded hole. The connecting hole is configured to allow a locking fastener to pass through, so that the locking fastener passes through the connecting hole and the through hole in sequence and is locked to the threaded hole.

[0020] When the support rod is locked to the inner frame, a connecting hole is provided on the inner frame in the thickness direction of the projection screen, allowing screws to pass through the inner frame and connect threadedly to the threaded hole on the support rod. During the locking process, the screw drives the support rod to move along the thickness direction of the projection screen, thereby tensioning the diaphragm. This application allows for screw tightening from the thickness direction of the projection screen; that is, during installation, the frame structure can be laid flat on the ground, and screws can be tightened directly from the front of the frame structure. This method is more convenient than tightening from the side of the frame structure. Furthermore, the support rod is connected via a sleeve on the diaphragm, allowing the diaphragm to be evenly stressed and tensioned under the action of the support rod, resulting in better tension.

[0021] As some optional implementations, the framework structure further includes: A positioning part is provided within the installation space and is configured to position the relative positions of the connecting hole and the threaded hole.

[0022] When the load-bearing rod is installed in the installation space, a positioning part is provided in the installation space to facilitate the screw passing through the through hole and aligning with the threaded hole. The positioning part positions the load-bearing rod for installation, making it easier for the screw to be aligned with the threaded hole for threaded locking, thus improving the convenience of locking the diaphragm during installation. The positioning part can be located on the inner frame or on the outer frame.

[0023] Secondly, this application also discloses a projection display device, comprising: Projector host; As described in the first aspect, the projection screen is configured to display an image projected by the projection host.

[0024] In the projection display device disclosed in this application, the projection screen is rotatably connected to the inner frame via an outer frame, creating an installation space between the outer and inner frames for mounting a load-bearing rod. When the load-bearing rod is positioned within this space, rotating the outer frame can conceal it, thus enabling its installation. The outer frame's rotatable connection to the inner frame makes them an integral unit, and the two frames can be rotatably connected via a hinge or other means, making installation very simple. In other words, when installing a diaphragm on the frame structure, the user only needs to position the load-bearing rod within the installation space to tension the diaphragm, and then rotate the outer frame to conceal the rod, achieving convenient installation. This not only simplifies operation but also reduces the need for screws and other materials required for frame installation, making installation easier for users and reducing the overall weight of the projection screen.

[0025] In other words, the ease of installation of projection screens during the installation process of projection display devices can also improve the overall installation efficiency of projection display devices.

[0026] Compared with the prior art, this application has at least the following beneficial effects: The projection screen disclosed in this application has a support rod positioned in the installation space formed by the outer edge of the inner frame. Simultaneously, the outer frame is rotatably connected to the outer edge of the inner frame. Thus, rotating the outer frame can either conceal or expose the support rod. In this way, the portion of the support rod that connects to the diaphragm is hidden between the outer and inner frames, resulting in a visually clean appearance where only the diaphragm, inner frame, and outer frame are visible. This enhances the overall aesthetic appeal of the projection display device. Furthermore, the outer frame is rotatably connected to the inner frame, allowing them to be integrated into a single unit. This rotatable connection can be achieved through methods such as hinges, simplifying installation. In other words, when installing the diaphragm on the frame structure, the user simply places the support rod in the installation space to tension the diaphragm, then rotates the outer frame to conceal the support rod, achieving convenient installation. This not only simplifies operation but also reduces the need for screws and other materials required for outer frame installation, making installation easier for users and reducing the overall weight of the projection screen. Attached Figure Description

[0027] To more clearly illustrate the technical solutions in the embodiments of this application, the drawings used in the embodiments will be briefly introduced below. Obviously, the 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.

[0028] Figure 1 This is a schematic diagram of the structure of the projection screen disclosed in the embodiments of this application; Figure 2 This is an exploded view of a projection screen disclosed in an embodiment of this application; Figure 3 This is a side view of the projection screen disclosed in an embodiment of this application; Figure 4 for Figure 3 A magnified view of a section at point A in the middle; Figure 5 This is another side view of the projection screen disclosed in the embodiments of this application; Figure 6 for Figure 5 A magnified view of a section at point B in the middle; Figure 7 This is another exploded view of the projection screen disclosed in the embodiments of this application; Figure 8 for Figure 7 A magnified view of a section at point C; Figure 9 This is yet another exploded view of the projection screen disclosed in the embodiments of this application; Figure 10 for Figure 9Enlarged view of a section at point D Figure 11 This is a schematic diagram of the structure of the projection display device disclosed in the embodiments of this application. Explanation of reference numerals in the attached figures: 10. Projection screen; 1. Display component; 11. Diaphragm; 111. Sleeve; 111a. Through hole; 12. Supporting rod; 12a. Threaded hole; 2. Frame structure; 2a. Installation space; 21. Inner frame; 21a. Connecting hole; 211. First frame; 212. Outer extension; 2121. Extension; 2122. First shaft connection; 22. Outer frame; 221. Second shaft connection; 222. Second frame; 23. Positioning part; 3. Locking fastener; 100. Projection display equipment; 20. Projection host. Detailed Implementation

[0029] 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, and 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.

[0030] In this application, the terms "upper," "lower," "left," "right," "front," "rear," "top," "bottom," "inner," "outer," and "middle," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are primarily for the purpose of better describing this application and its embodiments, and are not intended to limit the indicated device, element, or component to having a specific orientation, or to be constructed and operated in a specific orientation.

[0031] Furthermore, in addition to indicating location or positional relationship, some of the aforementioned terms may also have other meanings. For example, the term "above" may also be used in some cases to indicate a certain dependency or connection relationship. Those skilled in the art can understand the specific meaning of these terms in this application based on the specific circumstances.

[0032] Furthermore, the terms "installation," "setup," "equipped with," and "connection" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral structure; 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, or an internal connection between two devices, components, or parts. Those skilled in the art can understand the specific meaning of these terms in this application based on the specific circumstances.

[0033] Furthermore, the terms "first," "second," etc., are primarily used to distinguish different devices, components, or parts (which may be the same or different in specific type and construction), and are not intended to indicate or imply the relative importance or quantity of the indicated devices, components, or parts. Unless otherwise stated, "a plurality of" means two or more.

[0034] In related technologies, display devices such as televisions and computer screens are typically used to display information, provide entertainment, and facilitate interaction, thus meeting users' needs for information access and entertainment in their daily lives. Taking television as an example, televisions can be further categorized into projection televisions, LCD televisions, and cathode ray tube televisions, among others.

[0035] In a projection TV, the main unit (usually a laser projector) and the screen (such as an anti-glare screen) are combined. Currently, most screens on the market use a frame-type design, which mainly consists of a frame, a diaphragm, and multiple springs and screws used to tension the diaphragm. During frame installation and diaphragm tensioning, load-bearing rods are typically connected to the diaphragm. These rods are then installed and tensioned along the edge of the inner frame using screws or springs before the outer frame is installed. When installing the outer frame, screws are used to connect it to the inner frame to conceal the load-bearing rods located on the outside of the inner frame. Both the installation of the load-bearing rods and the outer frame require screws, resulting in numerous materials and a cumbersome process, making installation inconvenient for users and impacting the user experience. Furthermore, the large number of exposed screws may affect the appearance of the projection screen.

[0036] The technical solution of this application will be further described below with reference to the embodiments and accompanying drawings.

[0037] Firstly, please see Figure 1 This application discloses a projection screen 10.

[0038] Understandably, the projection screen 10 is typically square. For better display quality, it is usually mounted on a wall or suspended vertically relative to the ground. In other words, when the projection screen 10 is mounted, its width is its height. For example, when the projection screen 10 is mounted on a wall, its length can be along the horizontal direction of the wall, and its width can be along the vertical direction of the wall.

[0039] For example, as in Figure 1 In the example, X indicates the length direction of the projection screen 10, Y indicates the width direction of the projection screen 10, and Z indicates the thickness direction of the projection screen 10.

[0040] Please see Figure 2 In some embodiments, the projection screen 10 includes a display component 1.

[0041] In some embodiments, the projection screen 10 further includes a frame structure 2, which is mounted on the outer edge of the display component 1.

[0042] Optionally, the frame structure 2 can be folded along the width direction or the length direction of the projection screen 10.

[0043] For example, the frame structure 2 can be configured to be double-folded, triple-folded, or multi-folded, and the different folded parts can be connected by, for example, hinges or latches.

[0044] The frame structure 2 disclosed in this application can be folded to reduce its size in the length or width direction, so as to facilitate packaging and handling of the frame structure 2.

[0045] Please see Figures 3 to 6 In some embodiments, the display component 1 includes a diaphragm 11 configured to display an image projected by the projector host.

[0046] Optionally, the film 11 can be structurally divided into Fresnel structure and black grid structure. The black grid structure works by using a special process to manufacture a screen with a sawtooth cross-section. The Fresnel structure utilizes the converging principle of concave mirrors, breaking down the concave mirror into concentric circular structures and placing them on a plane. In other words, both rely on special optical structures to achieve directional reflection and anti-glare, thereby improving the display effect of the film 11.

[0047] Please see Figures 3 to 6 In some embodiments, the display component 1 includes a support rod 12 disposed at the edge of the diaphragm 11 and connected to the frame structure 2 to tension the diaphragm 11.

[0048] Optionally, the load-bearing bar 12 may be a solid or hollow bar, and this application does not make a specific limitation.

[0049] It is understood that this application uses the support rod 12 to be subjected to external force to tighten the diaphragm 11, so that the diaphragm 11 has a better image display effect.

[0050] Please see Figure 2 In some embodiments, the frame structure 2 includes an inner frame 21 and an outer frame 22. For example... Figure 4 or Figure 6 As shown, an installation space 2a is formed on the outer edge of the inner frame 21, and the load-bearing rod 12 is located in the installation space 2a. One end of the outer frame 22 is rotatably connected to the outer edge of the inner frame 21, and the outer frame 22 can rotate relative to the inner frame 21 to switch between a first state and a second state. In the first state, as... Figure 6As shown, the outer frame 22 rotates relative to the inner frame 21 until the other end of the outer frame 22 is away from the inner frame 21, thus exposing the load-bearing rod 12. In the second state, as... Figure 4 As shown, the outer frame 22 rotates relative to the inner frame 21 until the other end of the outer frame 22 is close to the inner frame 21, so as to block the load-bearing rod 12.

[0051] It is understood that the installation space 2a on the outer edge of the inner frame 21 means that the outer edge of the inner frame 21 has a space for the installation of the load-bearing rod 12. The installation space 2a can be formed by providing an extension 212 on the outer edge of the inner frame 21, or by providing an extension 212 outward from the outer edge of the inner frame 21. At the same time, when the outer frame 22 is connected to the extension 212 of the inner frame 21, it is formed together with the extension 212 of the inner frame 21.

[0052] The projection screen 10 disclosed in this application has a support rod 12 disposed in the mounting space 2a formed by the outer edge of the inner frame 21. Simultaneously, the outer frame 22 is rotatably connected to the outer edge of the inner frame 21. Thus, by rotating the outer frame 22, the support rod 12 can be either concealed or exposed. In this way, the portion of the support rod 12 used to connect to the diaphragm 11 is concealed between the outer frame 22 and the inner frame 21, so that visually only the diaphragm 11, the inner frame 21, and the outer frame 22 are visible. This results in a cleaner appearance for the projection display device 100, improving its aesthetic appeal. Furthermore, by rotatably connecting the outer frame 22 to the inner frame 21, the outer frame 22 and the inner frame 21 can be integrated into a single unit. The rotatable connection between the outer frame 22 and the inner frame 21 can also be achieved through methods such as a hinge, making installation very simple. In other words, when installing the diaphragm 11 on the frame structure 2, the user only needs to place the support rod 12 in the installation space 2a to tension the diaphragm 11, and then rotate the outer frame 22 to cover the support rod 12, which can achieve convenient installation of the diaphragm 11. Not only is the operation convenient, but it can also reduce the screws and other materials required for the installation of the outer frame 22, making it easier for the user to install while also reducing the overall weight of the projection screen 10.

[0053] Optionally, both the outer frame 22 and the inner frame 21 can be formed by aluminum alloy plate, carbon fiber plate, or fiberglass plate, and this application does not make specific limitations.

[0054] It is understandable that, since the projection screen 10 is oriented, the inner frame 21 can also be square, and the inner frame 21 has two edges along the length direction of the projection screen 10 and two edges along the width direction of the projection screen 10. That is to say, the outer frame 22 can be connected to the two edges of the inner frame 21 along the length direction of the projection screen 10, and the outer frame 22 can also be connected to the two edges of the inner frame 21 along the width direction of the projection screen 10.

[0055] Please see Figure 4 or Figure 6 In some embodiments, the inner frame 21 includes a first frame 211 and an outer extension 212. The outer extension 212 includes an extension 2121 and a first axial connection 2122. The extension 2121 protrudes along the width direction or the length direction of the first frame 211 at the outer edge of the first frame 211 to form an installation space 2a between the extension 2121 and the first frame 211. As the diaphragm 11 is brought to the edge of the first frame 211 by the support rod 12 under tension, part of the diaphragm 11 overlaps the first frame 211, so that the support rod 12 can be disposed within the installation space 2a formed between the extension 2121 and the first frame 211.

[0056] Please see Figure 4 or Figure 6 In some embodiments, the outer frame 22 includes a second pivot joint 221 and a second frame body 222. The second pivot joint 221 is rotatably fitted around the outer periphery of the first pivot joint 2122, and the second frame body 222 is connected to the end of the second pivot joint 221 away from the first pivot joint 2122. In a second state, the second frame body 222 at least partially overlaps the first frame body 211.

[0057] In this application, when connecting the outer frame 22 and the inner frame 21, an extension 212 is provided on the first frame body 211 of the inner frame 21, so that the load-bearing rod 12 is located at the outer edge of the first frame body 211. Then, the first shaft connection 2122 is connected to the second shaft connection 221 of the outer frame 22, so that the second frame body 222 of the outer frame 22 is rotatably connected to the extension 212. On the one hand, this application rotatably connects the outer frame 22 and the inner frame 21 by shaft connection, making it easy to assemble and disassemble the inner frame 21 without the need for additional screws, resulting in a simple structure and convenient operation. On the other hand, in the second state, that is, when the second frame body 222 is at least partially attached to the first frame body 211, the load-bearing rod 12 is located at the outer edge of the first frame body 211 and is covered and hidden by the second frame body 222, which helps to improve the appearance of the projection screen 10.

[0058] Optionally, the first frame 211 and the second frame 222 may be solid or hollow rods or plates, and this application does not make specific limitations.

[0059] Optionally, the first shaft connection 2122 may be a cylindrical shaft, and the second shaft connection 221 may be a hollow bushing. Alternatively, the second shaft connection 221 may be a cylindrical shaft, and the first shaft connection 2122 may be a hollow bushing. This application does not impose any specific limitations on this.

[0060] Optionally, the extension 212 can be a hollow or solid plate or rod. That is, by protruding a plate or rod of a certain length outward from the outer edge of the first frame 211, a certain distance can be made between the end of the extension 212 and the outer edge of the first frame 211, thereby forming the installation space 2a.

[0061] Please see Figure 4 or Figure 6 In some embodiments, the support rod 12 is configured to be locked to the extension 2121, or the support rod 12 is configured to be locked to the second frame 222.

[0062] When the support rod 12 is installed in the installation space 2a, it can be locked to the extension 2121 or the second frame 222, which not only ensures the stable installation of the diaphragm 11 but also tightens the diaphragm 11. Furthermore, when the support rod 12 is locked to the second frame 222 or the extension 2121, since both the second frame 222 and the extension 2121 are located at the edge of the first frame 211, the connectors for locking the support rod 12 can be relatively concealed, which helps improve the appearance of the projection screen 10.

[0063] Optionally, the load-bearing rod 12 can be locked to the extension 2121 or the second frame 222 by means of screws, bolts, pins, etc. In order to better understand the solution of this application, the following description takes the load-bearing rod 12 being locked to the extension 2121 as an example.

[0064] Please see Figure 7 and Figure 8 In some embodiments, the inner frame 21 is provided with a connection hole 21a along the thickness direction of the projection screen 10, that is, the connection hole 21a can be provided on the extension 2121. The support rod 12 is provided with a threaded hole 12a, which is provided corresponding to the connection hole 21a.

[0065] When the support rod 12 is locked onto the inner frame 21, a connecting hole 21a is provided on the inner frame 21 in the thickness direction of the projection screen 10, so that the screw can pass through the inner frame 21 and be threadedly connected to the threaded hole 12a on the support rod 12. During the locking process of the screw and the threaded hole 12a, the screw drives the support rod 12 to move along the thickness direction of the projection screen 10, thereby tensioning the diaphragm 11. In this application, when tightening the screw, it can be tightened from the thickness direction of the projection screen 10. That is, when the projection screen 10 is installed, the frame structure 2 can be placed flat on the ground, and the screw can be tightened directly from the front of the frame structure 2. Compared with the method of tightening from the side of the frame structure 2, the method of tightening the screw directly from the front of the frame structure 2 is more convenient.

[0066] Please see Figure 7 and Figure 8 In some embodiments, the diaphragm 11 is provided with a sleeve 111, which extends along the edge of the diaphragm 11. The support rod 12 passes through the sleeve 111 along the extending direction of the diaphragm 11. The sleeve 111 is provided with a through hole 111a corresponding to the threaded hole 12a. The through hole 111a communicates with the connecting hole 21a and the threaded hole 12a. The connecting hole 21a is configured to allow the locking fastener 3 to pass through, so that the locking fastener 3 passes through the connecting hole 21a and the through hole 111a in sequence and is locked to the threaded hole 12a.

[0067] When considering the connection between the support rod 12 and the diaphragm 11, the support rod 12 is connected through the sleeve 111 on the diaphragm 11, so that the diaphragm 11 can be evenly stressed and tensioned under the action of the support rod 12, resulting in a better tensioning effect. In addition, considering that the sleeve 111 will block the threaded hole 12a on the support rod 12, a through hole 111a is opened at the position corresponding to the threaded hole 12a when the sleeve 111 is set, so that the locking fastener 3 can pass through the through hole 111a to lock with the threaded hole 12a.

[0068] Understandably, sleeve 111 may be formed by curling the edge of diaphragm 11 to hold the support rod 12.

[0069] Optionally, the locking device 3 may be a screw, bolt, etc., which is not specifically limited in this application.

[0070] Please see Figure 9 and Figure 10 In some embodiments, the frame structure 2 further includes a positioning part 23, which is disposed in the installation space 2a and is configured to position the relative position of the connecting hole 21a and the threaded hole 12a.

[0071] For example, in the installation space 2a, a positioning part 23 can be provided on one side of the inner frame 21 or one side of the outer frame 22. For instance, two positioning parts 23 can be provided on the inner frame 21 corresponding to both ends of the support rod 12. The distance between the two positioning parts 23 can be the length of the support rod 12. When the support rod 12 is installed in the installation space 2a, the support rod 12 is placed at the positions corresponding to the two positioning parts 23, so that the threaded hole 12a on the support rod 12 corresponds to the connecting hole 21a on the inner frame 21. That is, when the support rod 12 is installed in the installation space 2a, in order to facilitate the screw to pass through the through hole 111a and align with the threaded hole 12a, a positioning part 23 is provided in the installation space 2a. The installation of the support rod 12 is positioned by the positioning part 23, so that the screw can be aligned with the threaded hole 12a for thread locking, which helps to improve the convenience of locking the diaphragm 11.

[0072] Optionally, such as Figure 10 As shown, the positioning part 23 can be a circular or square protrusion, protrusion, or protrusion, and this application does not make a specific limitation.

[0073] In some embodiments, in the second state, the extension direction of the second frame 222 is parallel to the width direction or the length direction of the first frame 211, and the diaphragm 11 is located between the first frame 211 and the second frame 222, so that the second frame 222 and the first frame 211 jointly clamp a portion of the diaphragm 11.

[0074] In the second state, when the second frame 222 overlaps the first frame 211, since the extension direction of the second frame 222 is parallel to the length or width direction of the first frame 211, the overlap between the second frame 222 and the first frame 211 is greater, allowing the second frame 222 and the first frame 211 to jointly hold the membrane 11. On one hand, the parallel arrangement of the second frame 222 and the first frame 211 prevents the outer frame 22 from protruding relative to the first frame 211, which helps improve the appearance of the projection screen 10. On the other hand, the second frame 222 can assist in the installation of the membrane 11, improving the stability of the membrane 11 installation.

[0075] Understandably, when the second frame 222 is attached to the first frame 211 to clamp the diaphragm 11, in order to avoid the second frame 222 clamping the diaphragm 11 too tightly and causing damage to the diaphragm 11, the position of the second frame 222 relative to the first frame 211 can be fixed by the damping generated when the first shaft connection 2122 and the second shaft connection 221 are connected. This allows the second frame 222 to maintain the action of clamping the diaphragm 11 relative to the first frame 211 without exerting a large clamping force on the diaphragm 11, thus avoiding damage to the diaphragm 11.

[0076] Please see Figure 4 In some embodiments, the extension direction of the second frame 222 forms an angle α with the extension direction of the second shaft connection 221, satisfying: 90° < α < 150°.

[0077] For example, the included angle α can be 90°-100°, 100°-110°, 110°-120°, 120°-130°, 130°-140°, 140°-150°, etc. For instance, the included angle α can be 95°, 100°, 105°, 110°, 115°, 120°, 125°, 130°, 135°, 140°, or 145°, etc.

[0078] When the extension direction of the second frame 222 forms an angle α with the second shaft connection 221, the angle α is controlled between 90° and 150°. On the one hand, this prevents the angle α from being less than 90°. If the angle α is too small, the angle between the connection between the second frame 222 and the second shaft connection 221 will be an acute angle, which may cause the projection screen 10 to scrape during installation. On the other hand, this prevents the angle α from being greater than 150°. If the angle is too large, the second frame 222 will be closer to the first frame 211, which may result in the installation space 2a being too small. When the outer frame 22 is in the first state, it may be inconvenient to install the support rod 12 within the installation space 2a. In other words, when the extension direction of the second frame 222 and the extension direction of the second shaft connection 221 are set at an angle, and the angle α is controlled between 90° and 150°, not only can the appearance of the frame structure 2 be relatively smooth, avoiding too many sharp angles from scratching the user, but also the installation space 2a can be sufficient to facilitate the installation of the load-bearing rod 12.

[0079] Please see Figure 6 In some embodiments, in the first state, the extension direction of the extension 2121 forms an angle β with the extension direction of the second shaft connection 221, satisfying: 150° < β < 180°.

[0080] For example, the included angle β can be 150°-160°, 160°-170°, 170°-180°, etc. For instance, the included angle β can be 155°, 160°, 165°, 170°, or 175°, etc.

[0081] In the first state, the extension direction of the extension 2121 forms an angle with the extension direction of the second shaft connection 221, with the angle β controlled between 150° and 180°. On the one hand, this prevents the angle β from being less than 150°, as this could cause the second frame 222 to be too close to the edge of the first frame 211, potentially resulting in an insufficient installation space 2a. On the other hand, this prevents the angle β from being greater than 180°, as this could cause the second frame 222 to be too far from the edge of the first frame 211. When the outer frame 22 rotates to switch to the second state, the second frame 222 might not be able to overlap the first frame 211 to shield the load-bearing rod 12 located in the installation space 2a. In other words, this application sets the extension direction of the extension 2121 at an angle to the extension direction of the second shaft connection 221. When the angle β is controlled between 150° and 180°, it can not only maintain sufficient installation space 2a, but also allow the second frame 222 to overlap the first frame 211 in the second state, thereby effectively blocking the load-bearing rod 12.

[0082] In some embodiments, an extension 212 is provided on the edge of the front side of the first frame 211 along the thickness direction of the projection screen 10. In a first state, the support rod 12 protrudes toward the back side of the first frame 211. In a second state, the second frame 222 rotates toward the back side of the first frame 211 so that the second frame 222 at least partially overlaps the back side of the first frame 211.

[0083] In this application, the extension portion 212 is positioned on the edge of the front side of the first frame 211. This means that when the outer frame 22 rotates, it rotates towards the back of the first frame 211, thereby obscuring the support rod 12. Specifically, the support rod 12 is installed from the back of the first frame 211, and the second frame 222 rotates from the front of the first frame 211 towards its back. The position obscuring the support rod 12 is also on the back of the first frame 211. When the user uses the projection screen 10, both the obscuring position of the second frame 222 and the position of the support rod 12 are on the back of the first frame 211, effectively concealing the overlap between the inner frame 21 and the outer frame 22, as well as the location of the support rod 12, thus improving the appearance of the projection screen 10.

[0084] Secondly, please see Figure 11 This application also discloses a projection display device 100, including a projection host 20 and a projection screen 10 disclosed in the first aspect, wherein the projection screen 10 is configured to display the image projected by the projection host 20.

[0085] In the projection display device 100 disclosed in this application, the projection screen 10 is rotatably connected to the inner frame 21 via an outer frame 22, forming an installation space 2a for mounting the support rod 12 between the outer frame 22 and the inner frame 21. When the support rod 12 is placed in the installation space 2a, it can be shielded by rotating the outer frame 22, thereby enabling the installation of the support rod 12. The outer frame 22 is rotatably connected to the inner frame 21, making them an integral unit, and the outer frame 22 and inner frame 21 can be rotatably connected via a shaft or other means, making installation very simple. In other words, when installing the diaphragm 11 on the frame structure 2, the user only needs to place the support rod 12 in the installation space 2a to tension the diaphragm 11, and then rotate the outer frame 22 to shield the support rod 12, thus achieving convenient installation of the diaphragm 11. This not only facilitates operation but also reduces the amount of screws and other materials required for installing the outer frame 22, making installation easier for the user and reducing the overall weight of the projection screen 10.

[0086] In other words, the projection display device 100 disclosed in this application can improve the overall installation efficiency of the projection display device 100 because the installation process of the projection screen 10 is convenient.

[0087] The projection screen and projection display device disclosed in the embodiments of this application have been described in detail above. Specific examples have been used to illustrate the principles and implementation methods of this application. The description of the above embodiments is only for the purpose of helping to understand the projection screen and projection display device of this application and its core ideas. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the ideas of this application. Therefore, the content of this specification should not be construed as a limitation of this application.

Claims

1. A projection screen, characterized in that, include: Display components; A frame structure, wherein the frame structure is mounted on the outer edge of the display component; The display component includes: A diaphragm configured to display an image projected by a projector; A load-bearing rod is provided at the edge of the diaphragm and is connected to the frame structure; The framework structure includes: An inner frame, the outer edge of which forms an installation space, and the load-bearing rod is located in the installation space; An outer frame, one end of which is rotatably connected to the outer edge of the inner frame.

2. The projection screen according to claim 1, characterized in that, The outer frame can rotate relative to the inner frame to switch between a first state and a second state; In the first state, the outer frame rotates relative to the inner frame until the other end of the outer frame is away from the inner frame, so as to expose the load-bearing rod; In the second state, the outer frame rotates relative to the inner frame until the other end of the outer frame is close to the inner frame, so as to block the load-bearing rod; The inner frame includes: A first frame, wherein a portion of the diaphragm overlaps the first frame; The epitaxial portion includes: An extension portion is provided on the outer edge of the first frame body along the width direction or the length direction of the first frame body to form the mounting space between the extension portion and the first frame body; The first shaft connection portion is located at the end of the extension portion away from the first frame; The outer frame includes: The second shaft connection is rotatably sleeved on the outer periphery of the first shaft connection; The second frame is connected to the end of the second shaft connection that is away from the first shaft connection; In the second state, the second frame is at least partially attached to the first frame.

3. The projection screen according to claim 2, characterized in that, The support rod is configured to be locked to the extension, or the support rod is configured to be locked to the second frame.

4. The projection screen according to claim 2, characterized in that, In the second state, the extension direction of the second frame is parallel to the width direction or the length direction of the first frame, and the diaphragm is located between the first frame and the second frame, so that the second frame and the first frame jointly clamp a portion of the diaphragm.

5. The projection screen according to claim 4, characterized in that, The extension direction of the second frame forms an angle α with the extension direction of the second shaft connection, satisfying: 90° < α < 150°.

6. The projection screen according to claim 2, characterized in that, In the first state, the extension direction of the extension portion forms an angle β with the extension direction of the second shaft connection portion, satisfying: 150° < β < 180°.

7. The projection screen according to claim 2, characterized in that, Along the thickness direction of the projection screen, the extension portion is located at the edge of the front side of the first frame; In the first state, the load-bearing rod is exposed towards the back of the first frame; In the second state, the second frame rotates toward the back of the first frame so that the second frame at least partially overlaps the back of the first frame.

8. The projection screen according to claim 1, characterized in that, Along the thickness direction of the projection screen, the inner frame is provided with: Connection hole; The load-bearing rod is provided with: A threaded hole, which is provided corresponding to the connecting hole; The diaphragm is provided with: A sleeve extends along the edge of the diaphragm, and a support rod passes through the sleeve along the extension direction of the diaphragm. The sleeve has a through hole corresponding to the threaded hole, and the through hole communicates with the connecting hole and the threaded hole. The connecting hole is configured to allow a locking fastener to pass through, so that the locking fastener passes through the connecting hole and the through hole in sequence and is locked to the threaded hole.

9. The projection screen according to claim 8, characterized in that, The framework structure also includes: A positioning part is provided within the installation space and is configured to position the relative positions of the connecting hole and the threaded hole.

10. A projection display device, characterized in that, include: Projector host; The projection screen as described in any one of claims 1-9, wherein the projection screen is configured to display an image projected by the projection host.

Images