Projection curtain device and vehicle

Abstract

The utility model provides a projection curtain device and a vehicle, and relates to the technical field of curtain structures. According to the projection curtain device, the display effect of the projection picture can be improved, the thickness of the projection curtain can be reduced, and the storage space required by the projection curtain can be reduced. The projection curtain device comprises a winding mechanism and a projection curtain. Wherein the projection curtain comprises a base body layer and at least two elastomer layers, and the at least two elastomer layers are respectively superposed on two opposite sides of the base body layer to form the projection curtain; one end of the projection curtain is fixed on the winding mechanism, and the winding mechanism is used for winding or unfolding the projection curtain. The projection curtain device is used for presenting a projection picture.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of curtain structure, and particularly relates to a projection curtain device and a vehicle. BACKGROUND

[0002] The application scenarios of the projection device are more and more, for example, some vehicles are equipped with the projection device and the projection curtain. The internal space of the vehicle is small, and the projection curtain needs to be used in multiple scenes such as parking and driving. In the related art, the projection curtain has a good display effect of the projection picture, but when the projection curtain is applied to the vehicle, the projection curtain needs a large storage space after being stored. Moreover, the temperature difference in the vehicle is large, the traditional projection curtain cannot meet the requirements of the high-temperature storage condition and the low-temperature storage condition in the vehicle, and the performance such as the durability and the flame resistance does not meet the requirements of the vehicle for the projection curtain. CONTENT OF THE UTILITY MODEL

[0003] The present application provides a projection curtain device and a vehicle, which can improve the display effect of the projection picture, reduce the thickness of the projection curtain, and reduce the storage space required by the projection curtain.

[0004] In one aspect, the present application provides a projection curtain device, which comprises a winding mechanism and a projection curtain. The projection curtain comprises a base layer and an elastic layer, and at least two elastic layers are respectively stacked on two opposite sides of the base layer to form the projection curtain. One end of the projection curtain is fixed on the winding mechanism, and the winding mechanism is used for winding or unfolding the projection curtain.

[0005] The projection curtain device provided by the application has the advantages that the elastic body layer is arranged on the base layer, the base layer can provide an attachment position for the elastic body layer, the base layer with thin thickness and high strength can be selected, the thickness of the base layer and the elastic body layer can be reduced, the strength of the projection curtain is improved, and the thickness of the projection curtain is reduced. The elastic body layers are arranged on the two sides of the base layer, the materials of the at least two elastic body layers can be selected to achieve a good imaging effect. For example, the elastic body layer with light color can improve the gain, color accuracy and contrast of the projection picture, and the elastic body layer with dark color can reduce the light transmittance of the projection light. The elastic body layers on the two sides of the base layer can apply forces to the base layer along the thickness direction Z of the base layer, and the directions of the forces applied by the elastic body layers on the two sides of the base layer to the base layer are opposite, so that the stresses on the two sides of the base layer are offset, and the curling of the projection curtain is reduced. Meanwhile, the winding mechanism is arranged on the projection curtain, the winding mechanism can automatically wind the projection curtain, so that the projection curtain can be stored, or the winding mechanism can unwind the projection curtain, so that the projection curtain can be used for projection. Therefore, the projection curtain device provided by the application can improve the display effect of the projection picture, reduce the curling, reduce the thickness of the projection curtain, reduce the storage space of the projection curtain, and automatically wind or unwind the projection curtain.

[0006] In a possible implementation of the application, the elastic body layer includes a first elastic body layer and a second elastic body layer, the first elastic body layer is located on the side of the base layer facing the projection surface, and the second elastic body layer is located on the side of the base layer away from the projection surface.

[0007] In the technical solution of the application, the first elastic body layer and the second elastic body layer are arranged on the opposite sides of the base layer, the first elastic body layer and the second elastic body layer apply forces with opposite directions to the base layer from the opposite sides of the base layer, the internal stress of the projection curtain is eliminated, the edges of the projection curtain are kept flat, and the curling is reduced.

[0008] In a possible implementation of the application, the elastic body layer includes a first elastic body layer and a second elastic body layer, the first elastic body layer is located on the side of the base layer facing the projection surface, and the second elastic body layer is located on the side of the base layer away from the projection surface, the L value of the Lab color system of the first elastic body layer is greater than the L value of the Lab color system of the second elastic body layer.

[0009] In the technical scheme of the present application, because the color of the first elastomer layer facing the projection surface is light, when the projection light beam is irradiated on the first elastomer layer, the projection picture can have a peak gain greater than or equal to 0.85, a color accuracy less than or equal to 0.01, and a contrast greater than or equal to 0.98. And because the color of the second elastomer layer away from the projection surface is deep, the projection screen can have a light transmittance less than 0.1%, so that the projection picture presented through the projection screen can have a better display effect.

[0010] In a possible implementation manner of the present application, along the thickness direction of the projection screen, the thickness proportion of the first elastomer layer in the projection screen is 25% to 45%.

[0011] In the technical scheme of the present application, because the thickness proportion of the first elastomer layer in the projection screen is 25% to 45%, even if the color of the first elastomer layer is light, the first elastomer layer can also have a low light transmittance, which is conducive to reducing the overall light transmittance of the projection screen. And the projection screen can have a certain ductility, so that the projection screen can have a certain deformation resistance.

[0012] In a possible implementation manner of the present application, along the thickness direction of the projection screen, the thickness proportion of the second elastomer layer in the projection screen is 10% to 20%.

[0013] In the technical scheme of the present application, because the thickness proportion of the second elastomer layer in the projection screen is 10% to 20%, even if the color of the second elastomer layer is deep, compared with the thin thickness of the first elastomer layer, the second elastomer layer can also have a lower light transmittance, so that the overall light transmittance of the projection screen can be reduced.

[0014] In a possible implementation manner of the present application, the elastomer layer further comprises a third elastomer layer, and along the thickness direction of the projection screen, the third elastomer layer is located on the side of the second elastomer layer away from the first elastomer layer.

[0015] In the technical scheme of the present application, because the third elastomer layer is further arranged on the side of the second elastomer layer away from the first elastomer layer, the performance of the elastic deformation of the third elastomer layer can be used to further improve the overall deformation resistance of the projection screen, so that the elongation at break and the elongation at load of the projection screen can be improved.

[0016] In a possible implementation manner of the present application, the L value of the Lab color system of the third elastomer layer is greater than the L value of the Lab color system of the second elastomer layer and less than the L value of the Lab color system of the first elastomer.

[0017] In the technical scheme of the present application, the third elastic body layer has a color lighter than that of the second elastic body layer and darker than that of the first elastic body layer, so that the light transmittance of the projection curtain can be further reduced.

[0018] In a possible implementation manner of the present application, the third elastic body layer accounts for 10% to 30% of the thickness of the projection curtain in the thickness direction of the projection curtain.

[0019] In the technical scheme of the present application, the third elastic body layer accounts for 10% to 30% of the thickness of the projection curtain, so that, when the first elastic body layer is arranged on one side of the base layer and the second elastic body layer and the third elastic body layer are arranged on the other side of the base layer, the thicknesses of the elastic body layers on the two opposite sides of the base layer can be equal or close to equal, so that the internal stress on the two sides of the base layer can be close to equal, and the width of the edge curl of the projection curtain can be further reduced.

[0020] In a possible implementation manner of the present application, the materials of the first elastic body layer, the second elastic body layer and the third elastic body layer include at least one of the following: silicone and thermoplastic polyurethane rubber.

[0021] In the technical scheme of the present application, the three elastic body layers are made of silicone and thermoplastic polyurethane rubber, so that the projection curtain has good flexibility, elasticity and good flame retardant performance.

[0022] In a possible implementation manner of the present application, the base layer includes a first base layer, the first base layer has a first porous structure, the first elastic body layer and the second elastic body layer are respectively arranged on the two sides of the first base layer in the thickness direction of the projection curtain, and the first elastic body layer and the second elastic body layer are connected through the first porous structure.

[0023] In the technical scheme of the present application, the first base layer has the first porous structure, so that the first elastic body layer and the second elastic body layer attached to the first base layer can intrude into the first porous structure to increase the contact area between the first elastic body layer, the second elastic body layer and the first base layer, so that the adhesion between the first elastic body layer, the second elastic body layer and the first base layer can be improved. The first elastic body layer and the second elastic body layer can also be directly connected through the first porous structure on the first base layer, so that the adhesion between the first elastic body layer, the second elastic body layer and the first base layer can be further increased, and the first elastic body layer, the second elastic body layer and the first base layer can be formed as a whole, which is beneficial to improving the mechanical strength of the projection curtain.

[0024] In a possible implementation manner of the present application, the first base layer accounts for 20% to 40% of the thickness of the projection curtain in the thickness direction of the projection curtain.

[0025] In the technical solution of the present application, the thickness of the first base layer accounts for 20% to 40% of the thickness of the projection screen, the first base layer occupies a relatively thick thickness of the projection screen, and the first base layer has poor deformation capability. The first base layer can resist the large internal stress of the projection screen, thereby reducing the edge curling of the projection screen. In addition, the first base layer has small deformation performance, which can improve the tensile resistance of the projection screen, and the first base layer has small thermal deformation performance, which can reduce the size shrinkage rate of the projection screen in a high-temperature environment.

[0026] In a possible implementation manner of the present application, the base layer includes a first base layer and a second base layer, the first base layer is located between the first elastic layer and the second elastic layer, and the second base layer is located between the second elastic layer and the third elastic layer.

[0027] In the technical solution of the present application, the base layer is provided as two layers, and the first elastic layer, the first base layer, the second elastic layer, the second base layer, and the third elastic layer are sequentially stacked. The first base layer and the second base layer can provide attachment points for the first elastic layer, the second elastic layer, and the third elastic layer, respectively, so that each elastic layer is directly attached to at least one base layer, thereby increasing the adhesion of each elastic layer to the base layer and improving the mechanical properties of the projection screen as a whole.

[0028] In a possible implementation manner of the present application, the first base layer has a first porous structure, the second base layer has a second porous structure, the first elastic layer and the second elastic layer are connected through the first porous structure along the thickness direction of the projection screen, and the second elastic layer and the third elastic layer are connected through the second porous structure.

[0029] In the technical solution of the present application, the first base layer has a first porous structure, so that the first and second elastic layers attached to the first base layer can intrude into the first porous structure to increase the contact area between the first and second elastic layers and the first base layer, or the first and second elastic layers can be directly connected through the first porous structure, so as to increase the adhesion between the first and second elastic layers and the first base layer. The second base layer has a second porous structure, so that the second and third elastic layers attached to the second base layer can intrude into the second porous structure to increase the contact area between the second and third elastic layers and the second base layer, or the second and third elastic layers can be directly connected through the second porous structure, so as to increase the adhesion between the second and third elastic layers and the second base layer. In this way, the first elastic layer, the first base layer, the second elastic layer, the second base layer and the third elastic layer are sequentially formed into an integral whole, which is conducive to further improving the mechanical strength of the projection screen.

[0030] In a possible implementation manner of the present application, the first base layer and the second base layer account for 10% to 20% of the thickness of the projection screen in the thickness direction of the projection screen.

[0031] In the technical solution of the present application, the thickness of the first base layer and the second base layer accounts for 10% to 20% of the thickness of the projection screen, and the first base layer and the second base layer respectively account for a relatively thin thickness of the projection screen, but the total thickness of the first base layer and the second base layer accounts for a relatively thick thickness of the projection screen, so that the first base layer and the second base layer can jointly resist the relatively large internal stress of the projection screen, thereby reducing the edge curling of the projection screen. In addition, the first base layer and the second base layer can improve the tensile resistance of the projection screen by virtue of the small deformation performance, and can reduce the size shrinkage rate of the projection screen in a high-temperature environment by virtue of the small thermal deformation performance.

[0032] In a possible implementation manner of the present application, the material of the first base layer and the second base layer includes at least one of the following: glass fiber and polyester fiber.

[0033] In the technical solution of the present application, the first base layer and the second base layer are both made of glass fiber and polyester fiber, so that the projection screen has relatively strong tensile strength, and the voids on the glass fiber or polyester fiber can provide relatively strong adhesion to the elastic layer, which is conducive to improving the adhesion strength between the elastic layer and the base layer.

[0034] In a possible implementation manner of the present application, the projection screen further includes a first texture layer, the first texture layer is attached to a side of the first elastic layer away from the second elastic layer, and a surface of the first texture layer away from the first elastic layer is a non-smooth surface.

[0035] In the technical solution of the present application, the first texture layer is arranged on the first elastic layer, the gain viewing angle of the projection screen can be increased through the first texture layer, for example, the viewing angle with a gain of 90% can be greater than or equal to ±60°. In addition, the first texture layer can prevent the first elastic layer from contacting dust in the air, thereby reducing the influence of dust attached to the projection screen on the projection picture.

[0036] In a possible implementation manner of the present application, the projection screen further includes a second texture layer, the second texture layer is attached to a side of the third elastic layer away from the second elastic layer.

[0037] In the technical solution of the present application, the second texture layer is arranged on the third elastic layer, the third elastic layer can be prevented from contacting dust in the air through the second texture layer, thereby reducing the influence of dust attached to the projection screen on the projection picture.

[0038] In a possible implementation manner of the present application, a surface roughness of the second texture layer is greater than a surface roughness of the first texture layer.

[0039] In the technical solution of the present application, the surface roughness of the second texture layer is greater than the surface roughness of the first texture layer, which can reduce the process difficulty of spraying the second texture layer on the projection screen. In addition, the second texture layer with a greater surface roughness can increase the absorption of the projection light beam transmitted to the second texture layer, thereby reducing the light transmittance of the projection screen.

[0040] In a possible implementation manner of the present application, along the thickness direction of the projection screen, the first texture layer and the second texture layer each account for 1% to 3% of the thickness of the projection screen.

[0041] In the technical solution of the present application, the thickness of the first texture layer and the second texture layer is each set to 1% to 3% of the thickness of the projection screen, the projection effect of the projection screen can be improved through the first texture layer and the second texture layer, the flame retardation performance of the projection screen can be improved, and the overall thickness of the projection screen can be reduced.

[0042] In a possible implementation manner of the present application, the thickness of the projection screen is 0.2 mm to 1 mm.

[0043] In the technical solution of the present application, the thickness of the projection screen is 0.2 mm to 1 mm, when the screen is wound or folded for storage, the space occupied by the projection screen can be reduced, and the projection screen can be conveniently stored.

[0044] In another aspect, the application provides a vehicle, comprising a vehicle body and the projection screen device provided in any of the above. Wherein the vehicle body has a vehicle cabin; the winding mechanism is arranged in the vehicle cabin.

[0045] The vehicle provided by the application can not only improve the display effect of the projection picture, but also reduce the generated edge curling, and reduce the thickness of the projection screen, which is conducive to reducing the required storage space of the projection screen device in or outside the vehicle cabin, and can also realize automatic winding or unfolding of the projection screen. BRIEF DESCRIPTION OF DRAWINGS

[0046] Figure 1 Structure diagram of the projection screen provided by the application Figure 1 ;

[0047] Figure 2 Structure diagram of the projection screen provided by the application Figure 2 .

[0048] BRIEF DESCRIPTION OF DRAWINGS

[0049] 1-base layer; 11-first base layer; 12-second base layer; 2-elastic body layer; 21-first elastic body layer; 22-second elastic body layer; 23-third elastic body layer; 3-texture layer; 31-first texture layer; 32-second texture layer; Z-thickness direction. DETAILED DESCRIPTION

[0050] In order to make the purpose, technical scheme and advantages of the embodiments of the application more clear, the specific technical scheme of the application will be further described in detail below in combination with the drawings in the embodiments of the application. The following embodiments are used to illustrate the application, but not to limit the scope of the application.

[0051] In the embodiments of the application, the terms "first" and "second" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first" and "second" can explicitly or implicitly include one or more features. In the description of the embodiments of the application, unless otherwise specified, the meaning of "a plurality of" is two or more.

[0052] In addition, in the embodiments of the application, the orientation terms such as "up", "down", "left" and "right" are defined with respect to the orientation of the components shown in the drawings. It should be understood that these directional terms are relative concepts, which are used for relative description and clarification, and can be changed accordingly according to the change of the orientation of the components placed in the drawings.

[0053] In the embodiments of the present application, unless specifically defined and limited, the term "connection" should be understood in a broad sense, for example, "connection" can be fixed connection, can also be detachable connection, or integral; can be directly connected, or indirectly connected through an intermediate medium.

[0054] In the embodiments of the present application, the terms "comprising", "containing" or any other variants thereof are intended to cover non-exclusive inclusion, so that the process, method, article or device including a series of elements not only includes those elements, but also includes other elements not explicitly listed, or includes elements inherent to such process, method, article or device. Without more limitation, the element defined by the sentence "including a…" does not exclude the presence of other identical elements in the process, method, article or device including the element.

[0055] In the embodiments of the present application, the words such as "exemplary" or "for example" are used to mean serving as an example, instance or illustration. Any embodiment or design solution described as "exemplary" or "for example" in the embodiments of the present application should not be interpreted as being more preferred or having more advantages than other embodiments or design solutions. Rather, the use of "exemplary" or "for example" is intended to present the relevant concept in a specific manner.

[0056] The application of projection equipment is more and more extensive, and in some special scenarios, new requirements are put forward not only for the projection equipment but also for the projection screen. For example, when the projection equipment is applied to a vehicle with limited space, in order to save space, it is hoped that the volume of the projection equipment and the projection screen is as small as possible, and a better projection picture can be presented.

[0057] The embodiments of the present application provide a projection screen device, which can improve the display effect of the projection picture and reduce the thickness of the projection screen, thereby facilitating the reduction of the storage space required by the projection screen. For the convenience of description and illustration, the projection screen device provided by the embodiments of the present application is described by taking the application of the projection screen device to a vehicle as an example, but the projection screen device is not limited to be applied only to a vehicle, and can be applied to any scene such as home, office and business.

[0058] Reference Figure 1 , Figure 1 Structure of the projection screen provided by the present application Figure 1 The projection screen device includes a winding mechanism and a projection screen. The projection screen includes a base layer 1 and an elastic body layer 2, and at least two elastic body layers 2 are respectively stacked on the two opposite sides of the base layer 1 to form the projection screen. One end of the projection screen is fixed on the winding mechanism, and the winding mechanism is used to wind or unfold the projection screen.

[0059] In the embodiment of the present application, the base layer 1 is used to carry and set other layer materials in the projection screen, and can keep the projection screen in a flat state. For example, the base layer 1 can adopt a textile fiber material, which has good mechanical properties, chemical stability and thermal stability. For example, the base layer 1 can adopt glass fiber, polyester fiber, etc.

[0060] In the embodiment of the present application, the elastic body layer 2 can reflect the projection light beam, so as to form a projection picture.

[0061] For example, along the thickness direction Z of the base layer 1, the elastic body layer 2 can be arranged on both sides of the base layer 1, that is, at least one elastic body layer 2 is attached to each side of the base layer 1. For example, the elastic body layer 2 can be made of a material with elasticity, and the easy deformation of the elastic material can be used to realize the winding or folding of the projection screen. For example, the elastic body layer 2 can be made of silicone, thermoplastic polyurethane rubber, etc. The organic silicone can be attached to the surfaces of the opposite sides of the base layer 1, and the color of the two layers of organic silicone can be selected to meet the requirements of the projection screen for the light transmittance, reflection and refraction of the projection light beam, so that the projection picture formed has good peak gain, color accuracy and contrast, etc.

[0062] In the embodiment of the present application, the winding mechanism can be rotated to wind the projection screen. For example, a reel matching the width of the projection screen can be arranged, and a fixed seat is arranged on the reel, and the reel is rotatably arranged on the fixed seat, so that the winding device is installed on the vehicle, wall or support through the fixed seat. A driving assembly can also be arranged in the winding mechanism, and the driving assembly is drivingly connected with the reel through a gear, so as to drive the reel to rotate through the driving assembly. One end of the projection screen can be fixed on the reel, so that the winding of the projection screen can be realized by controlling the rotation of the reel, or the wound projection screen can be unfolded.

[0063] The projection curtain device provided by the embodiment of the present application has the elastic body layer 2 arranged on the base layer 1, the base layer 1 can provide an attachment point for the elastic body layer 2, and the base layer 1 with a relatively small thickness and a relatively high strength can be selected, so that the thickness of the base layer 1 and the elastic body layer 2 can be reduced, the strength of the projection curtain can be improved, and the thickness of the projection curtain can be reduced. The elastic body layer 2 arranged on the two sides of the base layer 1 can be made of different materials, and a good imaging effect can be achieved. For example, the elastic body layer 2 with a light color can be used to improve the gain, color accuracy and contrast of the projection picture, and the elastic body layer 2 with a dark color can be used to reduce the light transmittance of the projection light. The elastic body layer 2 arranged on the two sides of the base layer 1 can apply a force to the base layer 1, and the directions of the forces applied by the elastic body layers 2 on the two sides of the base layer 1 to the base layer 1 are opposite along the thickness direction Z of the base layer 1, so that the stresses on the two sides of the base layer 1 can be offset, and the curling of the projection curtain can be reduced. The winding mechanism arranged on the projection curtain can automatically wind the projection curtain, so that the projection curtain can be stored or unwound by the winding mechanism, and the projection picture can be projected on the projection curtain. Therefore, the projection curtain device provided by the embodiment of the present application can improve the display effect of the projection picture, reduce the curling, reduce the thickness of the projection curtain, reduce the storage space of the projection curtain, and automatically wind or unwind the projection curtain.

[0064] In some possible embodiments of the present application, as shown in Figure 1 The elastic body layer 2 includes a first elastic body layer 21 and a second elastic body layer 22, the first elastic body layer 21 is located on the side of the base layer 1 facing the projection surface along the thickness direction Z of the projection curtain, the second elastic body layer 22 is located on the side of the base layer 1 away from the projection surface, and the L value of the Lab color system of the first elastic body layer 21 is greater than the L value of the Lab color system of the second elastic body layer 22.

[0065] In the embodiment of the present application, one elastic body layer 2 can be arranged on each side of the base layer 1, that is, the first elastic body layer 21 is attached to the side of the base layer 1 facing the projection surface along the thickness direction Z of the projection curtain, and the second elastic body layer 22 is attached to the side of the base layer 1 away from the projection surface. The projection surface is the surface irradiated by the light beam on the projection curtain, that is, the surface directly observed by the user.

[0066] For example, the first elastomer layer 21 can be made of light-colored silicone glue, and the second elastomer layer 22 can be made of dark-colored silicone glue. For example, the color of the first elastomer layer 21 can be a color with an L value of the Lab color system in a range of 90 to 100, i.e., the color of the first elastomer layer 21 is close to white or pure white. The color of the second elastomer layer 22 can be a color with an L value of the Lab color system in a range of 0 to 10, i.e., the color of the second elastomer layer 22 is close to pure black or pure black. Alternatively, the color of the second elastomer layer 22 can be a color with an L value of the Lab color system in a range of 50 to 60, i.e., the color of the second elastomer layer 22 can also be dark gray.

[0067] In the above embodiment, since the color of the first elastomer layer 21 facing the projection surface is light, when the projection light beam is incident on the first elastomer layer 21, the projection picture can have a peak gain greater than or equal to 0.85, a color accuracy less than or equal to 0.01, and a contrast greater than or equal to 0.98. In addition, the color of the second elastomer layer 22 away from the projection surface is dark, and the projection screen can have a light transmittance less than 0.1%, so that the projection picture presented by the projection screen can have a better display effect.

[0068] In some possible embodiments of the present application, the first elastomer layer 21 accounts for 25% to 45% of the thickness of the projection screen in the thickness direction Z of the projection screen.

[0069] In the embodiments of the present application, the thickness of the base layer 1 and the elastomer layer 2 can be controlled to control the thickness of the projection screen. For example, when the thickness of the projection screen is 0.2 mm to 1 mm, the thickness of the first elastomer layer 21 with pure white or close to white color can be set to 0.05 mm to 0.45 mm. For example, the thickness of the first elastomer layer 21 can be 0.05 mm, 0.08 mm, 0.1 mm, 0.15 mm, 0.18 mm, 0.2 mm, 0.25 mm, 0.3 mm, 0.35 mm, 0.4 mm, or 0.45 mm, etc. The specific thickness of the first elastomer layer 21 is not limited in the embodiments of the present application.

[0070] In the above embodiments, since the thickness of the first elastomer layer 21 accounts for 25% to 45% of the thickness of the projection screen, and the first elastomer layer 21 has a lighter color, it can also have a lower light transmittance, which is beneficial to reducing the overall light transmittance of the projection screen. Furthermore, it can give the projection screen a certain degree of elasticity, thereby giving it a certain resistance to deformation.

[0071] In some possible embodiments of this application, the second elastomer layer 22 accounts for 10% to 20% of the thickness of the projection screen along the thickness direction Z.

[0072] In this embodiment, the thickness of the projection screen can be controlled by adjusting the thickness of the second elastomer layer 22. For example, when the thickness of the projection screen is 0.2mm to 1mm, the thickness of the black or dark gray second elastomer layer 22 can be set to 0.02mm to 0.2mm. The thickness of the second elastomer layer 22 can be 0.02mm, 0.03mm, 0.05mm, 0.08mm, 0.1mm, 0.12mm, 0.15mm, 0.18mm, or 0.2mm, etc. This embodiment does not limit the specific thickness of the second elastomer layer 22.

[0073] In the above embodiments, since the thickness of the second elastomer layer 22 accounts for 10% to 20% of the thickness of the projection screen, when the second elastomer layer 22 is darker in color, its thinner thickness compared to the first elastomer layer 21 can also make the second elastomer have a lower light transmittance, thereby reducing the overall light transmittance of the projection screen.

[0074] In some possible embodiments of this application, such as Figure 1 As shown, the elastomer layer 2 also includes a third elastomer layer 23. Along the thickness direction Z of the projection screen, the third elastomer layer 23 is located on the side of the second elastomer layer 22 away from the first elastomer layer 21.

[0075] In this embodiment, a third elastomer layer 23 can be provided in the projection screen, and the third elastomer layer 23 can be attached to the side of the second elastomer layer 22 away from the first elastomer layer 21.

[0076] For example, the third elastomer layer 23 may be made of silicone with a different color than the second elastomer layer 22, or the third elastomer layer 23 may be made of thermoplastic polyurethane rubber with a different material than the second elastomer layer 22. The thickness of the third elastomer layer 23 may also be different from or the same as the thickness of the second elastomer layer 22.

[0077] In the above embodiment, since the third elastic body layer 23 is further arranged on the side of the second elastic body layer 22 away from the first elastic body layer 21, the performance of the projection screen in resisting deformation can be further improved by using the elastic deformation performance of the third elastic body layer 23, so that the elongation at break and the elongation under load of the projection screen can be improved.

[0078] In some possible embodiments of the present application, the L value of the Lab color system of the third elastic body layer 23 is greater than the L value of the Lab color system of the second elastic body layer 22 and less than the L value of the Lab color system of the first elastic body.

[0079] In the embodiments of the present application, the color of the third elastic body layer 23 can be set to be lighter than the color of the second elastic body layer 22 and darker than the color of the first elastic body layer 21, so as to further reduce the light transmittance of the projection screen by the third elastic body layer 23.

[0080] For example, the third elastic body layer 23 can be set to be brown or apricot yellow, that is, the color of the third elastic body layer 23 can be a color with an L value of 20 to 60 in the Lab color system.

[0081] In the above embodiment, since the color of the third elastic body layer 23 is lighter than the color of the second elastic body layer 22 and darker than the color of the first elastic body layer 21, the light transmittance of the projection screen can be further reduced by the third elastic body layer 23.

[0082] In some possible embodiments of the present application, the third elastic body layer 23 accounts for 10% to 30% of the thickness of the projection screen in the thickness direction Z of the projection screen.

[0083] In the embodiments of the present application, the thickness of the third elastic body layer 23 can be controlled to control the thickness of the projection screen. For example, when the thickness of the projection screen is 0.2 mm to 1 mm, the thickness of the third elastic body layer 23 in brown or apricot yellow can be set to 0.02 mm to 0.3 mm. For example, the thickness of the third elastic body layer 23 can be 0.02 mm, 0.03 mm, 0.05 mm, 0.08 mm, 0.1 mm, 0.12 mm, 0.15 mm, 0.18 mm, 0.2 mm, 0.22 mm, 0.25 mm, 0.27 mm, or 0.3 mm. The specific thickness of the third elastic body layer 23 is not limited in the embodiments of the present application.

[0084] In the above embodiments, since the thickness of the third elastomer layer 23 accounts for 10% to 30% of the thickness of the projection screen, in the case where the first elastomer layer 21 is arranged on one side of the base layer 1, and the second elastomer layer 22 and the third elastomer layer 23 are both arranged on the other side of the base layer 1, the thicknesses of the elastomer layers 2 on the two opposite sides of the base layer 1 can be equal or close to equal, so that the magnitudes of the internal stresses on the two sides of the base layer 1 can be close to equal, and thus the width of the edge curling of the projection screen can be reduced better.

[0085] In some possible embodiments of the present application, as shown in Figure 2 The base layer 1 includes a first base layer 11, the first base layer 11 has a first porous structure, the first elastomer layer 21 and the second elastomer layer 22 are respectively arranged on the two opposite sides of the first base layer 11 along the thickness direction Z of the projection screen, and the first elastomer layer 21 and the second elastomer layer 22 are connected through the first porous structure.

[0086] In the embodiments of the present application, a base layer 1 can be arranged in the projection screen, that is, a complete first base layer 11 is arranged between the elastomer layers 2. In this way, the first elastomer layer 21 and the second elastomer layer 22 can be respectively attached to the opposite surfaces of the first base layer 11 along the thickness direction Z of the projection screen.

[0087] For example, the first base layer 11 can be made of a material with a textile fiber structure, that is, the first base layer 11 is a planar structure made of a plurality of fine fibers that are interlaced longitudinally and transversely. In this way, small gaps can be formed between the interlaced fibers in the first base layer 11, which can be micro recessed grooves (approximately blind hole structures) or micro through holes. When the first elastomer layer 21 and the second elastomer layer 22 are respectively attached to the two opposite sides of the first base layer 11, the first elastomer layer 21 and the second elastomer layer 22 can invade the recessed grooves on the first base layer 11 to be firmly attached to the first base layer 11, or the first elastomer layer 21 and the second elastomer layer 22 can directly connect through the micro through holes on the first base layer 11 to lock the first base layer 11 between the two elastomer layers 2.

[0088] In the above embodiment, since the first base layer 11 has the first porous structure, the first elastic layer 21 and the second elastic layer 22 attached to the first base layer 11 can intrude into the first porous structure, so as to increase the contact area between the first elastic layer 21 and the second elastic layer 22 and the first base layer 11, thereby improving the adhesion between the first elastic layer 21 and the second elastic layer 22 and the first base layer 11. The first elastic layer 21 and the second elastic layer 22 can also be directly connected through the first porous structure on the first base layer 11, so as to further increase the adhesion between the first elastic layer 21 and the second elastic layer 22 and the first base layer 11, and the first elastic layer 21, the second elastic layer 22 and the first base layer 11 can be formed as a whole, which is beneficial to improving the mechanical strength of the projection screen.

[0089] In some possible embodiments of the present application, the first base layer 11 accounts for 20% to 40% of the thickness of the projection screen in the thickness direction Z of the projection screen.

[0090] In the embodiments of the present application, the thickness of the first base layer 11 can be controlled to control the thickness of the projection screen. For example, when the thickness of the projection screen is 0.2mm to 1mm, the thickness of the first base layer 11 with the textile fiber structure can be set to 0.04mm to 0.4mm. For example, the thickness of the first base layer 11 can be 0.04mm, 0.06mm, 0.08mm, 0.09mm, 0.1mm, 0.13mm, 0.16mm, 0.18mm, 0.2mm, 0.25mm, 0.28mm, 0.3mm, 0.33mm, 0.35mm, 0.37mm or 0.4mm. The specific thickness of the first base layer 11 is not limited in the embodiments of the present application.

[0091] In the above embodiment, since the thickness of the first base layer 11 accounts for 20% to 40% of the thickness of the projection screen, the first base layer 11 occupies a relatively thick thickness of the projection screen, and the deformation ability of the first base layer 11 is poor. The first base layer 11 can resist the large internal stress of the projection screen, so as to reduce the edge curling of the edge of the projection screen. The small deformation performance of the first base layer 11 can improve the tensile resistance of the projection screen, and the small thermal deformation performance of the first base layer 11 can reduce the size shrinkage rate of the projection screen in a high-temperature environment.

[0092] In some possible embodiments of the present application, referring to Figure 2 , Figure 2 The structure of the projection screen provided in the present application is shown in Figure 1The base layer 1 includes a first base layer 11 and a second base layer 12, the first base layer 11 is located between the first elastic layer 21 and the second elastic layer 22, and the second base layer 12 is located between the second elastic layer 22 and the third elastic layer 23.

[0093] In the embodiments of the present application, two base layers 1 can be arranged in the projection curtain, the two base layers 1 can adopt the same material or different materials, and the specific materials of the first base layer 11 and the second base layer 12 in the projection curtain are not limited in the embodiments of the present application.

[0094] For example, along the thickness direction Z of the projection curtain, the first elastic layer 21, the first base layer 11, the second elastic layer 22, the second base layer 12 and the third elastic layer 23 can be sequentially stacked, that is, the first base layer 11 is arranged between the first elastic layer 21 and the second elastic layer 22 to provide adhesion and support for the first elastic layer 21 and the second elastic layer 22 through the first base layer 11, and the second base layer 12 is arranged between the second elastic layer 22 and the third elastic layer 23 to provide adhesion and support for the third elastic layer 23 and the second elastic layer 22 through the second base layer 12, so as to form the projection curtain.

[0095] In the above embodiments, since the base layer 1 is arranged as two layers, and the first elastic layer 21, the first base layer 11, the second elastic layer 22, the second base layer 12 and the third elastic layer 23 are sequentially stacked, the first base layer 11 and the second base layer 12 can provide adhesion points for the first elastic layer 21, the second elastic layer 22 and the third elastic layer 23 respectively, so that each elastic layer 2 can be directly attached to at least one base layer 1, thereby increasing the adhesion of each elastic layer 2 on the base layer 1, and facilitating the improvement of the mechanical properties of the projection curtain as a whole.

[0096] In some possible embodiments of the present application, the first base layer 11 has a first porous structure, the second base layer 12 has a second porous structure, along the thickness direction Z of the projection curtain, the first elastic layer 21 and the second elastic layer 22 are connected through the first porous structure, and the second elastic layer 22 and the third elastic layer 23 are connected through the second porous structure.

[0097] In the embodiments of the present application, in the case of arranging two base layers 1 in the projection curtain, the first base layer 11 and the second base layer 12 can both adopt materials with a porous structure. For example, the first base layer 11 and the second base layer 12 can both adopt materials with a textile fiber structure.

[0098] For example, the first base layer 11 and the second base layer 12 can each be a planar structure made of a plurality of crosswise and longitudinally interlaced fine fibers. In this way, fine voids can be formed between the interlaced fibers in the first base layer 11, which can be micro recesses (approximately blind hole structures) or micro through holes, and the fine recesses and through holes can each be the first porous structure. Similarly, the second porous structure including micro recesses and micro through holes can also be formed between the interlaced fibers in the second base layer 12.

[0099] In another example, when the first and second elastomer layers 21 and 22 are respectively attached to the two sides of the first base layer 11, the first and second elastomer layers 21 and 22 can intrude into the recesses on the first base layer 11 to firmly attach to the first base layer 11, and the first and second elastomer layers 21 and 22 can also pass through the micro through holes on the first base layer 11 to be directly connected, so as to lock the first base layer 11 between the two elastomer layers 2. When the second base layer 12 is attached to the side of the second elastomer layer 22 away from the first base layer 11, the second base layer 12 can intrude into the recesses and through holes on the second elastomer layer 22. When the third elastomer layer 23 is further attached to the side of the second base layer 12 away from the second elastomer layer 22, the third elastomer layer 23 can also intrude into the recesses on the second base layer 12 to firmly attach to the second base layer 12, and the third elastomer layer 23 can also pass through the micro through holes on the second base layer 12 to be directly connected to the second elastomer layer 22, so as to lock the second base layer 12 between the second elastomer layer 22 and the third elastomer layer 23.

[0100] In the above embodiment, since the first base layer 11 has the first porous structure, the first and second elastic layers 21 and 22 attached to the first base layer 11 can intrude into the first porous structure to increase the contact area between the first and second elastic layers 21 and 22 and the first base layer 11, or the first and second elastic layers 21 and 22 can be directly connected through the first porous structure, so that the adhesion between the first and second elastic layers 21 and 22 and the first base layer 11 can be increased. In addition, the second base layer 12 has the second porous structure, so that the second and third elastic layers 22 and 23 attached to the second base layer 12 can intrude into the second porous structure to increase the contact area between the second and third elastic layers 22 and 23 and the second base layer 12, or the second and third elastic layers 22 and 23 can be directly connected through the second porous structure, so that the adhesion between the second and third elastic layers 22 and 23 and the second base layer 12 can be increased. In this way, the first elastic layer 21, the first base layer 11, the second elastic layer 22, the second base layer 12 and the third elastic layer 23 can be sequentially formed into an integral whole, which is conducive to further improving the mechanical strength of the projection screen.

[0101] In some possible embodiments of the present application, the first base layer 11 and the second base layer 12 account for 10% to 20% of the thickness of the projection screen in the thickness direction Z of the projection screen.

[0102] In the embodiments of the present application, the thickness of the first base layer 11 and the second base layer 12 can be controlled to control the thickness of the projection screen. For example, when the thickness of the projection screen is 0.2 mm to 1 mm, the thickness of the first base layer 11 and the second base layer 12 in the textile fiber structure can be set to 0.02 mm to 0.2 mm. For example, the thickness of the first base layer 11 and the second base layer 12 can be 0.02 mm, 0.05 mm, 0.07 mm, 0.09 mm, 0.1 mm, 0.12 mm, 0.15 mm, 0.17 mm, 0.19 mm or 0.2 mm, etc. The specific thickness of the first base layer 11 and the second base layer 12 is not limited in the embodiments of the present application.

[0103] In the above embodiment, the thickness of the first base layer 11 and the second base layer 12 accounts for 10% to 20% of the thickness of the projection screen, and the first base layer 11 and the second base layer 12 respectively occupy a relatively thin thickness of the projection screen, but the total thickness of the first base layer 11 and the second base layer 12 accounts for a relatively thick thickness of the projection screen, so that the first base layer 11 and the second base layer 12 can jointly resist the relatively large internal stress of the projection screen, thereby reducing the edge curling of the projection screen. And the stretching resistance of the projection screen can be improved by the small deformation performance of the first base layer 11 and the second base layer 12, and the size shrinkage rate of the projection screen in a high temperature environment can be reduced by the small thermal deformation performance of the first base layer 11 and the second base layer 12.

[0104] In some possible embodiments of the present application, as shown in Figure 2 and Figure 1 The projection screen further comprises a texture layer 3, and at least one texture layer 3 can be arranged on the outer surface of the elastomer layer 2. For example, a first texture layer 31 can be arranged in the projection screen, the first texture layer 31 is attached to the side of the first elastomer layer 21 away from the second elastomer layer 22, and the surface of the first texture layer 31 away from the first elastomer layer 21 is a non-smooth surface.

[0105] In the embodiments of the present application, the first texture layer 31 can be arranged on the projection screen to further improve the display effect of the projection picture formed on the projection screen through the first texture layer 31.

[0106] For example, the first texture layer 31 can adopt transparent ink paint, which can be a material with waterproof and fireproof properties. For example, the first texture layer 31 can adopt organic silicone skin oil. The organic silicone skin oil can be sprayed on the surface of the first elastomer layer 21 away from the second elastomer layer 22 in a spraying manner, so that the surface of the first texture layer 31 forms many tiny particles, that is, the surface of the first texture layer 31 away from the first elastomer layer 21 forms a concave-convex microstructure, so that the surface of the first texture layer 31 is a non-smooth surface.

[0107] In the above embodiment, since the first texture layer 31 is arranged on the first elastomer layer 21, the gain viewing angle of the projection screen can be increased through the first texture layer 31, for example, the viewing angle with a gain of 90% can be greater than or equal to ±60°. And the first texture layer 31 can isolate the first elastomer layer 21 from contacting dust in the air, which is conducive to reducing the influence of dust attached to the projection screen on the projection picture.

[0108] In some possible embodiments of the present application, as shown in Figure 2 and ​As shown, the projection screen further comprises a second texture layer 32, which is attached to the side of the third elastomer layer 23 away from the second elastomer layer 22.

[0109] In the embodiments of the present application, the second texture layer 32 can be arranged on the projection screen to improve the stability of the projection screen in high-temperature and low-temperature environments through the second texture layer 32.

[0110] For example, the second texture layer 32 can adopt transparent ink paint, which can be a material with waterproof and fireproof properties. For example, the second texture layer 32 can adopt organic silicone gel skin oil. The organic silicone gel skin oil can be sprayed on the surface of the third elastomer layer 23 away from the second elastomer layer 22 in a spraying manner, so that the surface of the second texture layer 32 forms many tiny particles, which can form a concave-convex microstructure on the surface of the second texture layer 32 away from the third elastomer layer 23. The second texture layer 32 can improve the low-temperature and high-temperature resistance of the elastomer layer 2 to improve the stability of the projection screen in high-temperature and low-temperature environments.

[0111] In the above embodiments, since the second texture layer 32 is arranged on the third elastomer layer 23, the second texture layer 32 can isolate the third elastomer layer 23 from dust in the air, which is conducive to reducing the influence of dust attached to the projection screen on the projection picture.

[0112] In some possible embodiments of the present application, the surface roughness of the second texture layer 32 is greater than the surface roughness of the first texture layer 31.

[0113] In the embodiments of the present application, when the first texture layer 31 is arranged on the first elastomer layer 21 and the second texture layer 32 is arranged on the third elastomer layer 23, the surface of the second texture layer 32 can be made more rough than the surface of the first texture layer 31, that is, the surface roughness of the second texture layer 32 is greater than the surface roughness of the first texture layer 31.

[0114] For example, when the second texture layer 32 is sprayed on the third elastomer layer 23, the particle diameter of the sprayed organic silicone gel skin oil can be greater than the particle diameter of the organic silicone gel skin oil sprayed on the first elastomer layer 21, so that the height of the protrusions of the second texture layer 32 can be greater than the height of the protrusions of the first texture layer 31, thereby the surface roughness of the second texture layer 32 can be greater than the surface roughness of the first texture layer 31.

[0115] In the above embodiment, since the surface roughness of the second texture layer 32 is greater than the surface roughness of the first texture layer 31, the process difficulty of spraying the second texture layer 32 on the projection screen can be reduced. Moreover, the absorption of the projection light beam transmitted to the second texture layer 32 can be increased by the greater surface roughness of the second texture layer 32, which is beneficial to reduce the light transmittance of the projection screen.

[0116] In some possible embodiments of the present application, the thickness proportion of the first texture layer 31 and the second texture layer 32 along the thickness direction Z of the projection screen is 1% to 3%.

[0117] In the embodiments of the present application, the thickness of the first texture layer 31 and the second texture layer 32 can be controlled to control the thickness of the projection screen. For example, in the case that the thickness of the projection screen is 0.2 mm to 1 mm, the thickness of the first texture layer 31 and the second texture layer 32 made of organic silicone skin feel oil is set to 0.002 mm to 0.03 mm. For example, the thickness of the first texture layer 31 and the second texture layer 32 can be 0.002 mm, 0.004 mm, 0.007 mm, 0.01 mm, 0.013 mm, 0.016 mm, 0.019 mm, 0.022 mm, 0.026 mm, 0.028 mm or 0.03 mm, etc. The specific thickness of the first texture layer 31 and the second texture layer 32 is not limited in the embodiments of the present application.

[0118] In the above embodiment, since the thickness of the first texture layer 31 and the second texture layer 32 is set to 1% to 3% of the thickness of the projection screen, the projection effect of the projection screen can be improved by the first texture layer 31 and the second texture layer 32, and the flame retardant performance of the projection screen can be improved, and the overall thickness of the projection screen can be reduced.

[0119] The projection screen provided by the embodiments of the present application is formed by sequentially stacking the first texture layer 31, the first elastomer layer 21, the first base layer 11, the second elastomer layer 22, the second base layer 12, the third elastomer layer 23 and the second texture layer 32.

[0120] Table 1 Test data of the projection screen

[0121]

[0122]

[0123]

[0124] As shown in the tests on the projection screen provided by the embodiments of the present application in Table 1 above, the embodiments of the present application meet the requirements of the specifications by designing the materials, colors and thicknesses of the layers of the projection screen. For example, the light transmittance of the projection screen can be less than 0.1%; the gain viewable angle of the projection screen can be greater than or equal to ±60° when the gain is 90%; the peak gain of the projection screen can be greater than or equal to 0.85; the brightness uniformity of the projection screen can be greater than or equal to 0.90; the color accuracy of the projection screen can be less than or equal to 0.01; the relative contrast of the projection screen can be greater than or equal to 0.98; the width of the rolled edge generated by the edge of the projection screen can be less than or equal to 2 mm; the longitudinal and lateral dimensional shrinkage of the projection screen after heating can be less than or equal to 2%; the projection screen does not have structural damage after being stored at a low temperature of -40℃ for 96 hours and a high temperature of 95℃ for 96 hours, and can still be used normally; the burning speed of the projection screen can be less than or equal to 70 mm / min; the tearing strength that the projection screen can withstand can be greater than or equal to 50 N; the minimum tensile force at which the projection screen breaks can be greater than or equal to 200 N; the elongation at break of the projection screen can be greater than or equal to 10%; and the constant load elongation of the projection screen under a load of 50 N can be less than or equal to 5%. Therefore, as shown in the test results of the projection screen provided by the embodiments of the present application in Table 1 above, the projection screen provided by the embodiments of the present application not only can present a projection image with good display effect, but also has good mechanical properties and flame retardancy and other characteristics.

[0125] In addition, the embodiments of the present application also provide a vehicle, which comprises a vehicle body and the projection screen device provided by any one of the embodiments. The vehicle body has a vehicle cabin, and the winding mechanism is arranged in the vehicle cabin.

[0126] In the embodiments of the present application, the vehicle includes a general motor vehicle, for example, a sport utility vehicle (SUV), a sedan, a passenger car, an off-road vehicle, a tractor, a truck, a special vehicle, a bus, a truck, etc.; the vehicle can be a hybrid vehicle, an electric vehicle, a hybrid electric vehicle, a hydrogen-powered vehicle and other alternative fuel vehicles. The embodiments of the present application do not limit the type and structure of the vehicle.

[0127] For example, the vehicle generally includes a vehicle cabin, which can be a closed structure or an open structure. The vehicle cabin includes a cockpit, a cargo compartment, etc., and the cockpit can accommodate passengers, and the cargo compartment can load goods, etc.

[0128] Another example, the winding mechanism can be fixed in the space reserved in the cabin, or can be fixed outside the cabin. For example, the winding mechanism can be fixedly installed in the cabin to unfold the projection curtain through the winding mechanism, so as to facilitate the passengers in the car to watch the movie, etc. The winding mechanism can also be fixedly installed on the box wall of the cargo compartment to unfold the projection curtain through the winding mechanism, so as to facilitate the driver to watch the movie through the projection device when parking, etc.

[0129] The vehicle provided by the embodiments of the present application can not only improve the display effect of the projection picture, but also reduce the generated edge curling, and reduce the thickness of the projection curtain, which is beneficial to reduce the required storage space of the projection curtain device in the cabin or outside the cabin, and can also realize automatic winding or unfolding of the projection curtain.

[0130] The above embodiments are only used to illustrate the technical solutions of the present application, but not to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that the technical solutions recorded in the foregoing embodiments can still be modified, or some or all of the technical features can be replaced by equivalents; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application, and they should be covered in the scope of the specification of the present application.

Claims

1. A projection screen device, characterized by The application relates to a projection curtain and a winding mechanism. The projection curtain comprises a base layer (1) and an elastic layer (2), and at least two elastic layers (2) are respectively stacked on two opposite sides of the base layer (1) to form the projection curtain. One end of the projection curtain is fixed on the winding mechanism, and the winding mechanism is used for winding or unwinding the projection curtain. The elastic layer (2) comprises a first elastic layer (21) and a second elastic layer (22), and the first elastic layer (21) is located on the side of the base layer (1) facing the projection surface, and the second elastic layer (22) is located on the side of the base layer (1) away from the projection surface.

2. The projection screen device of claim 1, wherein, The first elastic layer (21) accounts for 25% to 45% of the thickness of the projection curtain in the thickness direction of the projection curtain.

3. The projection screen device of claim 2, wherein, The second elastic layer (22) accounts for 10% to 20% of the thickness of the projection curtain in the thickness direction of the projection curtain.

4. The projection screen device of claim 3, wherein, The elastic layer (2) further comprises a third elastic layer (23), and the third elastic layer (23) is located on the side of the second elastic layer (22) away from the first elastic layer (21) in the thickness direction of the projection curtain.

5. The projection screen device according to any one of claims 2 to 4, wherein The L value of the Lab color system of the third elastic layer (23) is greater than the L value of the Lab color system of the second elastic layer (22) and smaller than the L value of the Lab color system of the first elastic layer.

6. The projection screen device of claim 5, wherein, The third elastic layer (23) accounts for 10% to 30% of the thickness of the projection curtain in the thickness direction of the projection curtain.

7. The projection screen apparatus of claim 5, wherein, The materials of the first elastic layer (21), the second elastic layer (22) and the third elastic layer (23) comprise at least one of the following: silica gel and thermoplastic polyurethane rubber.

8. The projection screen apparatus of claim 5, wherein, The base layer (1) comprises a first base layer (11) having a first porous structure, and the first elastic layer (21) and the second elastic layer (22) are respectively located on two sides of the first base layer (11) in the thickness direction of the projection curtain, and the first elastic layer (21) and the second elastic layer (22) are connected through the first porous structure.

9. The projection screen device according to any one of claims 2 to 4, 6 to 8, wherein The base layer (1) accounts for 20% to 40% of the thickness of the projection curtain in the thickness direction of the projection curtain.

10. The projection screen device of claim 3, 4 or 7, wherein, The base layer (1) comprises a first base layer (11) and a second base layer (12), the first base layer (11) is located between the first elastic layer (21) and the second elastic layer (22), and the second base layer (12) is located between the second elastic layer (22) and the third elastic layer (23).

11. The projection screen apparatus of claim 5, wherein, The first base layer (11) has a first porous structure, the second base layer (12) has a second porous structure, the first elastic layer (21) and the second elastic layer (22) are connected through the first porous structure in the thickness direction of the projection curtain, and the second elastic layer (22) and the third elastic layer (23) are connected through the second porous structure.

12. The projection screen device of claim 11, wherein, ​ 13. The projection screen apparatus of claim 11, wherein, The first base layer (11) and the second base layer (12) each account for 10% to 20% of the thickness of the projection screen in the thickness direction of the projection screen.

14. The projection screen apparatus of claim 11, wherein, The material of the first base layer (11) and the second base layer (12) comprises at least one of the following: glass fiber, polyester fiber.

15. The projection screen apparatus of claim 5, wherein, The projection screen further comprises a first texture layer (31) attached to the side of the first elastomer layer (21) away from the second elastomer layer (22), and the surface of the first texture layer (31) away from the first elastomer layer (21) is a non-smooth surface.

16. The projection screen apparatus of claim 15, wherein, The projection screen further comprises a second texture layer (32) attached to the side of the third elastomer layer (23) away from the second elastomer layer (22).

17. The projection screen apparatus of claim 16, wherein, The surface roughness of the second texture layer (32) is greater than that of the first texture layer (31).

18. The projection screen apparatus of claim 16, wherein, The first texture layer (31) and the second texture layer (32) each account for 1% to 3% of the thickness of the projection screen in the thickness direction of the projection screen.

19. The projection screen apparatus of any of claims 1-4, 6-8, 11-18, wherein, The thickness of the projection screen is 0.2mm to 1mm.

20. The projection screen apparatus of claim 10, wherein, The thickness of the projection screen is 0.2mm to 1mm.

21. The projection screen apparatus of any of claims 2-4, 7-8, 11-18, wherein, The L value of the Lab color system of the first elastomer layer (21) is greater than that of the second elastomer layer (22).

22. A vehicle characterized by Comprise: A vehicle body having a vehicle cabin; The projection screen device of any one of claims 1 to 21, wherein the winding mechanism is arranged in the vehicle cabin.

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