Projection screen

Abstract

The application discloses a projection screen and belongs to the technical field of projection. The projection screen comprises an optical curtain, a back plate and a hanging piece. The optical curtain in the projection screen is fixed on one side of the back plate through bonding. An installation groove is formed on the side of the back plate away from the optical curtain, and the hanging piece used for being clamped with a hanging rack arranged on a wall is fixed in the installation groove. Therefore, after the projection screen is hung on the wall through cooperation of the hanging piece and the hanging rack, the distance between the optical curtain and the wall can be effectively reduced, and the hanging effect of the projection screen on the wall is better.

Description

Technical Field

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

[0002] With the continuous development of technology, projection devices are increasingly being used in consumers' work and daily lives. Currently, projection devices mainly consist of a projector and a projection screen. The projector is used to emit a light beam to the projection screen to display the projected image.

[0003] A projection screen typically includes an optical screen, a back panel, a rectangular frame, and a hanger. The optical screen is bonded to one side of the back panel, and the rectangular frame is clamped between the bonded optical screen and the edge of the back panel. The hanger is directly fixed to the side of the back panel facing away from the optical screen, and the hanger abuts against a bracket fixed to a target object (e.g., a wall) to suspend the projection screen on the wall.

[0004] However, when the projection screen is suspended on the wall by the cooperation of the internal suspension device and the wall-mounted bracket, the distance between the optical screen and the wall is relatively large, resulting in a poor hanging effect of the projection screen on the wall. Summary of the Invention

[0005] This application provides a projection screen. It solves the problem of poor wall mounting performance of existing projection screens. The technical solution is as follows:

[0006] On one hand, a projection screen is provided, the projection screen comprising:

[0007] Optical screen;

[0008] A back plate, one side of which is bonded to the optical screen, and the side of the back plate facing away from the optical screen has at least two mounting slots, two of which are located on opposite sides of the back plate.

[0009] In addition, at least two hanging members corresponding to the at least two mounting slots, each of the hanging members being fixed in the corresponding mounting slot, and the at least two hanging members corresponding to at least two brackets fixed on the wall.

[0010] The beneficial effects of the technical solutions provided in this application include at least the following:

[0011] A projection screen may include an optical screen, a back panel, and a suspension device. The optical screen is fixed to one side of the back panel by adhesive bonding. Since a mounting groove is provided on the side of the back panel facing away from the optical screen, and the suspension device for engaging with a wall mount is fixed within the mounting groove, the distance between the optical screen and the wall is effectively reduced after the projection screen is suspended from the wall using the suspension device and the wall mount, resulting in a better hanging effect for the projection screen. Attached Figure Description

[0012] 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.

[0013] Figure 1 This is a schematic diagram of the structure of a projection screen provided in an embodiment of this application;

[0014] Figure 2 yes Figure 1 An exploded view of a portion of the projection screen's structure is shown.

[0015] Figure 3 This is an exploded view of a backplate provided in an embodiment of this application;

[0016] Figure 4 This is an exploded view of a projection screen provided in an embodiment of this application;

[0017] Figure 5 yes Figure 4 A schematic diagram of the projection screen assembly is shown.

[0018] Figure 6 This is a schematic diagram of the distribution of receiving slots on a honeycomb core layer provided in an embodiment of this application;

[0019] Figure 7 This is a schematic diagram showing the distribution of receiving slots on another honeycomb core layer provided in an embodiment of this application;

[0020] Figure 8 This is a structural schematic diagram of a reinforcing member provided in an embodiment of this application;

[0021] Figure 9 This is a schematic diagram of the installation of a reinforcing member and a back plate according to an embodiment of this application;

[0022] Figure 10 This is a schematic diagram of the installation of another reinforcing member and back plate provided in an embodiment of this application;

[0023] Figure 11 yes Figure 10 Sectional view at A-A';

[0024] Figure 12 This is a schematic diagram of another projection screen structure provided in an embodiment of this application;

[0025] Figure 13 This is a schematic diagram of another backplate structure provided in an embodiment of this application;

[0026] Figure 14 This is an exploded view of another projection screen provided in an embodiment of this application;

[0027] Figure 15 This is a schematic diagram of another projection screen provided in an embodiment of this application;

[0028] Figure 16 This is a hanging effect diagram of a projection screen provided in an embodiment of this application;

[0029] Figure 17 This is an exploded view of another projection screen provided in the embodiments of this application;

[0030] Figure 18 This is a schematic diagram of the structure of a laser projection system provided in an embodiment of this application.

[0031] The accompanying drawings illustrate specific embodiments of this application, which will be described in more detail below. These drawings and descriptions are not intended to limit the scope of the concept in any way, but rather to illustrate the concept of this application to those skilled in the art through reference to particular embodiments. Detailed Implementation

[0032] 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.

[0033] Please refer to Figure 1 , Figure 1 This is a schematic diagram of the structure of a projection screen provided in an embodiment of this application. Figure 2 yes Figure 1 An exploded view of a portion of the projection screen structure is shown. The projection screen 000 may include: an optical screen 100, a back panel 200, and a suspension member 300.

[0034] One side of the back panel 200 in the projection screen 000 can be bonded to the optical screen 100, and the side of the back panel 200 facing away from the optical screen 100 can have at least two mounting slots 201. Two of these mounting slots 201 can be located on opposite sides of the back panel 200. For example, the two mounting slots 201 can be arranged along the direction of the long side of the back panel 200.

[0035] The projection screen 000 can have at least two hanging members 300, and these at least two hanging members 300 and at least two mounting slots 201 can correspond one-to-one, with each hanging member 300 fixed in its corresponding mounting slot 201. These at least two hanging members 300 can correspond one-to-one with at least two wall mounts fixed to the wall. For example, the back panel 200 on the side facing away from the optical screen 100 can have two mounting slots 201, located on opposite sides of the back panel. The number of hanging members 300 can also be two, each fixed in one of the two mounting slots 201. There can be two wall mounts, and the two hanging members 300 can be engaged with the two wall mounts respectively, thus suspending the projection screen 000 on the wall. It should be noted that the number of mounting slots 201 in the back panel 200 can also be more than two, such as three or four. The number of hanging parts 300 and the number of wall brackets can be the same as the number of mounting slots 201. This application embodiment does not make specific limitations in this regard.

[0036] In this embodiment, the optical screen 100 in the projection screen 000 is fixed to one side of the back plate 200 by adhesive bonding. Since the back plate 200 has a mounting groove 201 on the side facing away from the optical screen 100, and a hanging member 300 for engaging with a wall-mounted bracket is fixed within this mounting groove 201, the distance between the optical screen 100 and the wall is effectively reduced after the projection screen 000 is suspended from the wall by the cooperation of the hanging member 300 and the wall-mounted bracket, resulting in a better hanging effect of the projection screen 000 on the wall.

[0037] In summary, this application provides a projection screen that may include an optical screen, a back panel, and a hanging component. The optical screen is fixed to one side of the back panel by adhesive bonding. Since a mounting groove is provided on the side of the back panel facing away from the optical screen, and the hanging component for engaging with a wall mount is fixed within this groove, the distance between the optical screen and the wall is effectively reduced after the projection screen is suspended from the wall using the hanging component and the wall mount, resulting in a better hanging effect for the projection screen.

[0038] Optional, please refer to Figure 3 , Figure 3This is an exploded view of a back panel provided in an embodiment of this application. The back panel 200 in the projection screen 000 may include: a honeycomb core layer 202, and a first skin 203 and a second skin 204 located on both sides of the honeycomb core layer 202. Both the first skin 203 and the second skin 204 can be fixedly connected to the honeycomb core layer 202, and the side of the first skin 203 facing away from the honeycomb core layer 202 can be connected to the optical screen 100. The side of the honeycomb core layer 202 facing away from the optical screen 100 may have a receiving groove 202a, and the mounting groove 201 in the back panel 200 may be located within the receiving groove 202a in the honeycomb core layer 202. The second skin 204 in the back panel 200 may have an opening 204a communicating with the receiving groove 202a, wherein the portion of the receiving groove 202a in the honeycomb core layer 202 that overlaps with the opening 204a in the second skin 204 forms the mounting groove 201.

[0039] In this configuration, the first skin 203 and the second skin 204 are bonded to both sides of the honeycomb core layer 202 to form the back panel 200. This ensures that the overall weight of the back panel 200, composed of the first skin 203, the second skin 204, and the honeycomb core layer 202, is relatively low. This facilitates the transport of the projection screen 000, which integrates the optical screen 100 and the back panel 200. For example, the first skin 203, the second skin 204, and the honeycomb core layer 202 in the back panel 200 can all be structures made of aluminum alloy or other materials; this embodiment does not impose specific limitations on these materials.

[0040] In this embodiment, when the suspension member 300 is hidden by creating a receiving groove 202a in the honeycomb core layer 202 of the back panel 200, thereby reducing the distance between the optical screen 100 and the wall, the opening of the receiving groove 202a in the honeycomb core layer 202 will reduce the local strength of the honeycomb core layer 202, which in turn will reduce the overall strength of the back panel 200. Furthermore, the back panel 200 may deform during long-term use, resulting in poor flatness of the optical screen 100 bonded to the back panel 200. To ensure the supporting strength of the back panel 200, composed of the first skin 203, the second skin 204, and the honeycomb core layer 202, for the optical screen 100, the back panel 200 can be reinforced during or after the composite process. This application provides an exemplary description of the reinforcement of the back panel using the following two optional implementation methods:

[0041] For the first optional implementation method, please refer to... Figure 4 and Figure 5 , Figure 4 This is an exploded view of a projection screen provided in an embodiment of this application. Figure 5 yes Figure 4The diagram shows an assembly schematic of the projection screen. The receiving groove 202a in the honeycomb core layer 202 can be elongated, with a portion overlapping the opening 204a in the second skin 204, and the other portion covered by the second skin 204. The projection screen 000 also includes a reinforcing member 400 fixed within the receiving groove 202a in the honeycomb core layer 202, which can be covered by the second skin 204. In this configuration, by integrating the reinforcing member 400 into the honeycomb core layer 202, and ensuring that the strength of the reinforcing member 400 is greater than that of the honeycomb core layer 202, the strength of the back panel 200 is effectively enhanced after the back panel 200 is laminated. Furthermore, by reinforcing the strength of the honeycomb core layer 202 with the reinforcing member 400, the honeycomb core layer 202 in the back panel 200 is less prone to deformation under external forces during the manufacturing and transportation of the projection screen 000. This ensures that the probability of deformation of the optical screen 100 connected to the back panel 200 is low, thus ensuring good flatness of the optical screen 100.

[0042] For example, in the actual manufacturing process of the back panel 200, firstly, a long strip-shaped receiving groove 202a can be formed (e.g., by milling) on ​​one side of the honeycomb core layer 202; then, a reinforcing member 400 is provided in the long strip-shaped receiving groove 202a, the shape of which can match the shape of the receiving groove 202a, and the length of the reinforcing member 400 can be the same as the length of the receiving groove 202a; finally, a second skin 204 is bonded to the side of the honeycomb core layer 202 where the receiving groove 202a is formed, and an opening 204a is formed at a target position of the second skin 204 (the target position is the position where the suspension member is set on the back panel), and the area where the opening 204a is located must overlap with the receiving groove 202a. In this application, the reinforcing member 400 can be made of a metal material with greater strength than the honeycomb core layer 200, such as iron sheet. This application embodiment does not specifically limit this.

[0043] In this application, there are several possible relationships between the length direction of the elongated receiving groove 202a and the direction of the long side of the honeycomb core layer 202. The following embodiments of this application illustrate two possible cases:

[0044] For the first possible scenario, please refer to... Figure 4 and Figure 6 , Figure 6This is a schematic diagram illustrating the distribution of receiving slots on a honeycomb core layer according to an embodiment of this application. The length direction of the elongated receiving slot 202a can be parallel to the direction of the long side of the honeycomb core layer 202. When two mounting slots 201 are arranged along the direction of the long side of the honeycomb core layer 202, an integral elongated receiving slot 202a can be formed at the location of the two mounting slots 201. The length of the elongated receiving slot 202a can be the same as the length of the long side of the honeycomb core layer 202. It should be noted that in other possible implementations, the length of the elongated receiving slot 202a can also be less than the length of the long side of the honeycomb core layer 202; this embodiment of the application does not specifically limit this.

[0045] For the second possible scenario, please refer to [the relevant documentation / reference]. Figure 4 and Figure 7 , Figure 7 This is a schematic diagram of the distribution of receiving slots on another honeycomb core layer provided in this application embodiment. The length direction of the elongated receiving slot 202a can be perpendicular to the direction of the long side of the honeycomb core layer 202. When two mounting slots 201 are arranged along the direction of the long side of the honeycomb core layer 202, an integral elongated receiving slot 202a can be formed at the position of each mounting slot 201. The length of the elongated receiving slot 202a can be the same as the length of the short side of the honeycomb core layer 202. It should be noted that in other possible implementations, the length of the elongated receiving slot 202a can also be less than the length of the short side of the honeycomb core layer 202, and this application embodiment does not specifically limit this. In addition, it should also be noted that the length direction of the elongated receiving slot 202a can also intersect the direction of the long side of the honeycomb core layer 202 and the direction of the short side of the honeycomb core layer 202.

[0046] Optional, please refer to Figure 8 and Figure 9 , Figure 8 This is a structural schematic diagram of a reinforcing member provided in an embodiment of this application. Figure 9This is a schematic diagram of the installation of a reinforcing member and a back panel according to an embodiment of this application. The reinforcing member 400 in the projection screen 000 may include: a first sheet structure 401 and a second sheet structure 402, one side of the first sheet structure 401 can be fixedly connected to one side of the second sheet structure 402. The second sheet structure 402 in the reinforcing member 400 can be fixedly connected to the bottom surface of the receiving groove 202a in the honeycomb core layer 200, and the first sheet structure 401 can be fixedly connected to one of the two sides of the receiving groove 202a. The bottom surface of the receiving groove 202a can be the side of the receiving groove 202a opposite to the opening 204a on the second skin 204, and the two sides of the receiving groove 202a can be located on opposite sides of the bottom surface of the receiving groove 202a. In this configuration, the first sheet structure 401 and the second sheet structure 402 are fixedly connected, with the second sheet structure 402 fixedly connected to the bottom surface of the receiving groove 202a, and the first sheet structure 401 connected to one side of the receiving groove 202a. Thus, the first sheet structure 401 and the second sheet structure 402 can reinforce the strength of the honeycomb core 202, effectively simplifying the process of integrating the reinforcing member 400 within the receiving groove 202a and improving the manufacturing efficiency of the backplate 200. For example, the first sheet structure 401 can be perpendicular to the second sheet structure 402.

[0047] In this application, as Figure 8 and Figure 9 As shown, the reinforcing member 400 may further include a third sheet structure 403, which is fixedly connected to the side of the second sheet structure 402 opposite to the first sheet structure 401. The first sheet structure 401, the second sheet structure 402, and the third sheet structure 403 can be used to form a bent structure A. Thus, by forming the bent structure A with the first sheet structure 401, the second sheet structure 402, and the third sheet structure 403, the strength of the honeycomb core layer 202 can be further reinforced. For example, the third sheet structure 403 may also be perpendicular to the second sheet structure 402. It should be noted that in other possible implementations, the cross-sectional shape of the reinforcing member 400 may be square, or the reinforcing member 400 may be a hollow annular structure. This application embodiment does not specifically limit the shape of the reinforcing member 400.

[0048] Please refer to the following in the implementation of this application: Figure 10 and Figure 11 , Figure 10 This is a schematic diagram illustrating the installation of another reinforcing member and back plate according to an embodiment of this application. Figure 11 yes Figure 10A cross-sectional view at A-A'. The reinforcing member 400 and the hanging member 300 in the projection screen 000 can be an integral structure. The bent structure A formed by the first sheet structure 401, the second sheet structure 402, and the third sheet structure 403 in the reinforcing member 400 may further include a fourth sheet structure 404 fixedly connected to the other side of the first sheet structure 401. The fourth sheet structure 404 may be distributed at least within the mounting groove 201 in the back plate 200, and the fourth sheet structure 404 may be arranged parallel to the second sheet structure 402. In this case, by making the reinforcing member 400 and the hanging member 300 an integral structure, and fixing the fourth sheet structure 404 to the other side of the first sheet structure 401 to form the bent structure A, the reinforcing member 400 with the integrated fourth sheet structure 404 can be directly engaged with a wall-mounted bracket, eliminating the need for a separate hanging member 300 to suspend the projection screen 000. This effectively simplifies the process steps in the actual processing of the back panel 200 and improves processing efficiency. It should be noted that when the reinforcing member 400 and the suspension member 300 are integrated, after the reinforcing member 400 is fixed in the receiving groove 202a, the second skin 204 is covered on the side of the honeycomb core layer 202 where the receiving groove 202a is formed, and an opening 204a is formed at the target position of the second skin 204 to ensure that the second skin 204 does not cover the reinforcing member 400 at the target position.

[0049] Optional, please refer to Figure 12 , Figure 12 This is a schematic diagram of another projection screen structure provided in this application embodiment. The honeycomb core layer 202 in the back panel 200 may also have an auxiliary receiving groove 202b on the side facing away from the optical screen 100. This auxiliary receiving groove 202b is elongated and can be completely covered by the second skin 204. The projection screen 000 may also include an auxiliary reinforcing member 500 fixed within the auxiliary receiving groove 202b. In this case, by providing an elongated auxiliary receiving groove 202b on the side of the honeycomb core layer 202 facing away from the optical screen 100, and by providing an auxiliary reinforcing member 500 within the auxiliary receiving groove 202b, the strength of the honeycomb core layer 202 can be further improved, thereby further improving the overall strength of the back panel 200.

[0050] In this application, as Figure 12 As shown, there can be at least one auxiliary receiving groove 202b, and the length direction of the auxiliary receiving groove 202b can be parallel to the length direction of the receiving groove 202a. In other possible implementations, the length direction of the auxiliary receiving groove 202b can also intersect with the length direction of the receiving groove 202a, for example, perpendicularly. This application embodiment does not specifically limit this.

[0051] For the second optional implementation method, please refer to... Figure 13 , Figure 13 This is a schematic diagram of another backplate structure provided in an embodiment of this application. The opening boundary of the receiving groove 202a in the honeycomb core layer 200 facing away from the first skin 203 coincides with the opening boundary of the opening 204a on the second skin 204 facing the receiving groove 202a. For example, in the actual manufacturing process of the backplate 200, the second skin 204 can first be bonded to one side of the backplate 200; then, the opening 204a is formed on the second skin 204, and the receiving groove 202a is formed on the honeycomb core layer 200, such that the opening boundary of the receiving groove 202a coincides with the opening boundary of the opening 204a facing the receiving groove 202a; finally, the suspension member 300 is fixed in the receiving groove 202a. In this case, since the opening 204a can be formed on the second skin 204 and the receiving groove 202a can be formed on the honeycomb core layer 202 after the backplate 200 is laminated, Therefore, the length of the receiving slot 202a opened on the honeycomb core layer 202 is effectively reduced, ensuring that the projection screen 000 has a high level of appearance refinement.

[0052] Regarding the method of reinforcing the backplate 200 after the backplate 200 has been laminated, the embodiments of this application illustrate the following two possible scenarios:

[0053] For the first possible scenario, please refer to... Figure 14 , Figure 14 This is an exploded view of another projection screen provided in this application embodiment. The projection screen 000 further includes a third skin 600 fixed in a receiving groove 202a in the honeycomb core layer 202, and the thickness of the third skin 600 can be greater than the thickness of the first skin 203 and greater than the thickness of the second skin 204. The suspension member 300 can be located in the receiving groove 202a and fixedly connected to the third skin 600. Thus, in the actual manufacturing process, a thicker third skin 600 can be used to fix in the receiving groove 202a, while reducing the thickness of the first skin 203 and the second skin 204 on both sides of the honeycomb core layer 202. In this way, the overall weight of the back panel 200 can be effectively reduced, and after the suspension member 300 is fixedly connected to the third skin 600, it can be ensured that the projection screen 000 is stably suspended on the wall through the cooperation of the third skin 600 and the suspension member 300.

[0054] For the second possible scenario, please refer to [the relevant documentation / reference]. Figure 15 , Figure 15This is a schematic diagram of another projection screen provided in an embodiment of this application. The projection screen 000 further includes a reinforcing member 400 fixed in the receiving groove 202a. The reinforcing member 400 and the suspension member 300 can be an integral structure, that is, the reinforcing member 400 can be directly used as the suspension member 300. For example, such as Figure 11 As shown, the reinforcing member 400 may include: a first sheet-like structure 401, a second sheet-like structure 402, a third sheet-like structure 403, and a fourth sheet-like structure 404. The two sides of the second sheet-like structure 402 are fixedly connected to one side of the first sheet-like structure 401 and one side of the third sheet-like structure 403, respectively, and the fourth sheet-like structure 404 is fixedly connected to the other side of the first sheet-like structure 401. The first sheet-like structure 401, the second sheet-like structure 402, the third sheet-like structure 403, and the fourth sheet-like structure 404 can form a bent structure A. The fourth sheet-like structure 404 and the second sheet-like structure 402 can be arranged in parallel. Please refer to... Figure 16 , Figure 16 This is a diagram illustrating the suspension effect of a projection screen according to an embodiment of this application. When it is necessary to suspend the projection screen 000 on a wall, the suspension of the projection screen 000 can be achieved by engaging the fourth piece-shaped structure 404 in the reinforcing member 400 with the bracket B fixed on the wall.

[0055] Optional, such as Figure 16 As shown, in the direction perpendicular to the optical screen 100, the width of the suspension member 300 can be less than or equal to the depth of the mounting groove 201. In this case, when the suspension member 300 is located within the mounting groove 201, in the direction perpendicular to the optical screen 100, since the width of the suspension member 300 is less than or equal to the depth of the mounting groove 201, when the projection screen 000 is suspended on the wall by the suspension member 300, the distance between the optical screen 100 in the projection screen 000 and the wall can be further ensured to be small, thus ensuring a better suspension effect of the projection screen 000 on the wall.

[0056] Optional, please refer to Figure 17 , Figure 17 This is an exploded view of another projection screen provided in an embodiment of this application. The projection screen 000 may further include a frame 700, which can be clamped at the edges of the optical screen 100 and the back panel 200. In this case, since the suspension member 300 can be directly fixed to the back panel 200, it is not necessary to fix the suspension member 300 to the frame 700 as in related technologies. Therefore, the structure of the frame 700 can be effectively simplified, and the thickness and weight of the frame 700 can be reduced.

[0057] Generally, flexural modulus is the ability of an object to resist bending deformation; the higher the flexural modulus value, the better the surface object's resistance to bending deformation. In this embodiment, the relationship between the opening area of ​​the receiving groove 202a in the honeycomb core layer 202 and the flexural modulus of the back plate 200 was verified. Furthermore, to verify the influence of the opening area of ​​the receiving groove 202a on the strength of the back plate 200, a deformation test was conducted on the back plate 200 with a force applied, using the maximum force experienced by the back plate 200 in a real environment as a reference. The test results showed that a suitable opening area can be selected based on the flexural modulus, and different opening areas have a relatively small impact on the strength of the back plate 200. Thus, by creating the receiving groove 202a in the honeycomb core layer 202 and reinforcing it with a reinforcing member 400, a stable connection to the projection screen can be directly achieved using the reinforcing member 400. In addition, after the reinforcing member 400 is placed in the receiving groove 202a, it can not only reduce the overall distance between the optical screen 100 and the wall, but also ensure that the overall strength of the back plate 200 used to support the optical screen 100 is good, so that the back plate 200 provides good support for the optical screen 100, thereby making the flatness of the optical screen 100 better.

[0058] In summary, this application provides a projection screen that may include an optical screen, a back panel, and a hanging component. The optical screen is fixed to one side of the back panel by adhesive bonding. Since a mounting groove is provided on the side of the back panel facing away from the optical screen, and the hanging component for engaging with a wall mount is fixed within this groove, the distance between the optical screen and the wall is effectively reduced after the projection screen is suspended from the wall using the hanging component and the wall mount, resulting in a better hanging effect for the projection screen.

[0059] This application also provides a laser projection system, which can be an ultra-short-throw laser projection system. For example, please refer to... Figure 18 , Figure 18 This is a schematic diagram of a laser projection system provided in an embodiment of this application. The laser projection system may include: a projection screen 000 and a laser projection device 001. The projection screen 000 may be any of the projection screens shown in the above embodiments.

[0060] Thus, when the laser projection device 001 is working, it can emit light at an angle upwards, allowing it to project images onto the projection screen 000.

[0061] 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.

[0062] 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: Optical screen; The back panel includes: a honeycomb core layer, and a first skin and a second skin located on both sides of the honeycomb core layer. Both the first skin and the second skin are connected to the honeycomb core layer, and the side of the first skin facing away from the honeycomb core layer is connected to the optical screen. The side of the honeycomb core layer facing away from the optical screen has a receiving groove, and the second skin has an opening communicating with the receiving groove. The portion of the receiving groove that overlaps with the opening and the opening together form a mounting groove. There are at least two mounting grooves, and two of the at least two mounting grooves are located on both sides of the back panel. A reinforcing member fixed within the receiving groove, the reinforcing member being covered by the second skin; the reinforcing member comprising: a first sheet structure, a second sheet structure, a third sheet structure, and a fourth sheet structure; One side of the first sheet structure is fixedly connected to one side of the second sheet structure; The second sheet-like structure is fixedly connected to the bottom surface of the receiving groove, and the first sheet-like structure is fixedly connected to one of the two sides of the receiving groove. The bottom surface of the receiving groove is the side of the receiving groove opposite to the opening, and the two sides of the receiving groove are respectively located on both sides of the bottom surface. The third sheet structure is fixedly connected to the side of the second sheet structure opposite to the first sheet structure, and the third sheet structure is fixedly connected to the other side of the two sides of the receiving groove; The fourth sheet structure is fixedly connected to the other side of the first sheet structure, and the fourth sheet structure is at least distributed within the mounting groove; And, at least two hanging members corresponding one-to-one with the at least two mounting slots, each of the hanging members being fixed in the corresponding mounting slot, and the at least two hanging members corresponding one-to-one with at least two brackets fixed on the wall; The receiving groove is elongated, with a portion overlapping the opening and the other portion covered by the second skin; the reinforcing member and the suspension member are integrally formed, and the strength of the reinforcing member is greater than the strength of the honeycomb core layer; the first sheet structure, the second sheet structure, the third sheet structure, and the fourth sheet structure are used to form a bending structure.

2. The projection screen according to claim 1, characterized in that, The honeycomb core layer also has an auxiliary receiving groove on the side opposite to the optical screen. The auxiliary receiving groove is elongated and is completely covered by the second skin. The projection screen also includes an auxiliary reinforcing member fixed within the auxiliary receiving slot.

3. The projection screen according to any one of claims 1 to 2, characterized in that, The projection screen further includes a frame, which is clamped at the edges of the optical screen and the back panel.

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