Rolling screen and vehicle-mounted projection screen

Abstract

The application discloses a curled screen and a vehicle-mounted projection screen, the curled screen comprises a base body and a reflective layer formed on one side of the base body, and the reflective layer is a rubber coating. Compared with an existing projection screen, the curled screen provided by the embodiment of the invention uses the rubber coating as the reflective layer, on one hand, the good elasticity of a rubber material is utilized to weaken and eliminate vibration conducted to the projection screen so as to reduce and eliminate jitter of the projection screen, and on the other hand, the curled screen also has the advantages of simple structure and low cost. And by utilizing the adaptability of the rubber material in a relatively large temperature range, the projection screen can be ensured to keep stable performance in different temperature environments.

Description

Technical Field

[0001] The present application relates to the field of screens, and in particular to a curled screen for vehicle-mounted projection. Background Art

[0002] The projection screen is an indispensable device for the projection equipment to obtain high-quality projection effects. Usually, the usage environment of the projection screen is mostly fixed, so in most cases, the industry only pays attention to the display performance such as the light resistance of the projection screen, and will not pay more attention to the seismic resistance and environmental adaptability of the projection screen.

[0003] The applicant discovered during the specific development that in the use environment such as vehicle-mounted projection, the vehicle will vibrate due to various situations while driving. After this vibration is transmitted to the vehicle-mounted projection screen, it will cause the projection screen surface to shake, seriously affecting the viewing effect. At the same time, when the vehicle is driving in different regions or at different times, the ambient temperature outside the vehicle will be different, especially when driving long distances, the difference in ambient temperature is more obvious. The base materials of existing projection screens are mainly made of plastic materials such as PVC. These materials have a narrow operating temperature range and are easy to harden at low temperatures, affecting the flatness, display performance and curling performance of the projection screen.

[0004] Therefore, the applicant is committed to providing a projection screen in a vehicle-mounted projection display scenario that has good shock resistance and can maintain good performance in a wider temperature range. Summary of the invention

[0005] In order to solve the above problems, the present application proposes a roll-up screen.

[0006] A curling screen comprises a substrate and a reflective layer formed on one side of the substrate, wherein the reflective layer is a coating layer containing rubber.

[0007] Preferably, the coating is a silicone rubber coating.

[0008] Preferably, the organic silicone rubber coating is doped with scattering particles.

[0009] Preferably, the reflectivity of the reflective layer to visible light is ≥92%.

[0010] Preferably, the substrate comprises a first surface and a second surface opposite to each other, the reflective layer is formed on the first surface, and a reinforcing layer is further formed on the second surface, and the reinforcing layer is used to adjust the curling performance of the curling screen.

[0011] Preferably, the substrate is made of fabric.

[0012] The present application also provides a vehicle-mounted projection screen, comprising the above-mentioned curling screen.

[0013] Compared with the existing screens, the above-mentioned curled screen provided in this embodiment uses a rubber coating as a reflective layer. On the one hand, it uses the good elasticity of the rubber material to weaken and eliminate the vibration transmitted to the projection screen, thereby reducing and eliminating the jitter of the projection screen. On the other hand, it uses the adaptability of the rubber material to a large temperature range to ensure that the projection screen can maintain stable performance in different temperature environments.

[0014] Furthermore, by doping the scattering particles in the reflective layer, the projection light is reflected on the surface of the reflective layer and diffused at the same time, so that the reflective layer has a high reflectivity and a large scattering angle, thereby increasing the visible range of the projected image of the curled screen. At the same time, by adding scattering particles to the rubber layer, the elasticity of the rubber layer can also be improved to avoid the screen jitter problem caused by the good elasticity of the rubber layer. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0016] Figure 1 It is a schematic diagram of the structure of the curling screen provided in the implementation mode of the present application. DETAILED DESCRIPTION

[0017] The following embodiments of the technical solution of the present application are described in detail in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present application, and are therefore only used as examples, and cannot be used to limit the scope of protection of the present application.

[0018] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by technicians in the technical field to which this application belongs; the terms used herein are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" in the specification and claims of this application and the above-mentioned figure descriptions and any variations thereof are intended to cover non-exclusive inclusions.

[0019] In the description of the embodiments of the present application, the technical terms "first", "second", etc. are only used to distinguish different objects, and cannot be understood as indicating or implying relative importance or implicitly indicating the number, specific order or primary and secondary relationship of the indicated technical features. In the description of the embodiments of the present application, the meaning of "multiple" is more than two, unless otherwise clearly and specifically defined.

[0020] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0021] See also Figure 1 A rolled screen provided in an embodiment of the present invention includes a substrate 10 , a reflective layer 20 and a reinforcing layer 30 .

[0022] The substrate 10 is a flexible substrate, which serves as the supporting body of the roll-up screen and can be rolled up and unfolded under the action of an external force. In this embodiment, the material of the substrate 10 can be selected from flexible polymer materials such as polyvinyl alcohol (PVA), polyester (PET), polyimide (PI), polyethylene naphthalate (PEN), etc., and can also be selected from leather, fabric, etc. As long as it can serve as a supporting body and can be rolled up and unfolded under the action of an external force, it can be applied to the present invention as the substrate 10.

[0023] Preferably, in this embodiment, the substrate 10 is a fabric with low ductility. Referring to the test method of the light industry standard QB / T 4043-2010 of the People's Republic of China, the physical property range of the fabric is preferably as shown in the following table.

[0024]

[0025]

[0026] It can be understood that in the present invention, when the substrate 10 is a fabric, its physical properties are not limited to the performance parameter ranges in the above table, and it can be adjusted according to different usage requirements as long as the usage requirements are met.

[0027] In this embodiment, the substrate 10 includes a first surface 11 and a second surface 12 opposite to each other, wherein the first surface 11 faces the projection device and is used as a light receiving surface.

[0028] The reflective layer 20 is formed on the first surface 11 to reflect the projected image in the direction of the field of view. The reinforcing layer 30 is formed on the second surface 12 to adjust the curling performance of the substrate 10 .

[0029] It is worth noting that, in this embodiment, the reflectivity of the reflective layer 20 to visible light is ≥ 85% or more, and more preferably, the reflectivity of the reflective layer 20 to visible light is ≥ 92% or more. Since the roll-up screen is often used in a bright environment, the reflective layer made of a material with high reflectivity can allow more light to enter the human eye. At the same time, due to the poor heat resistance of rubber, more light is reflected by the reflective layer, which reduces the heat converted by the silicone absorbing light, thereby improving the service life of the roll-up screen.

[0030] In this embodiment, the reflective layer 20 is a coating containing rubber, preferably, the reflective layer 20 is a silicone rubber coating. In this embodiment, silicone rubber is selected as the coating, which can improve the reflectivity of the reflective layer 20 and make the scattering angle of the screen larger, so as to better remove the influence of ambient light on the projection.

[0031] It should be noted that in this embodiment, the rubber refers to a highly elastic polymer material with reversible deformation, which is elastic at room temperature, can produce a large deformation under a small external force, and can return to its original shape after the external force is removed. The rubber can be a single-component rubber material or a mixture of multiple rubber materials.

[0032] It is more preferred to use a mixture of other rubber materials with waterproof properties and silicone rubber. This embodiment can make the reflective layer 20 not only wear-resistant but also more waterproof, thereby further improving the performance of the curling screen. In this embodiment, the reflectivity of the reflective layer 20 is ≥95%, and the heat resistance is better.

[0033] In this embodiment, the main purpose of using rubber coating for the reflective layer 20 is, on the one hand, to utilize the good elasticity of the rubber material to weaken and eliminate the vibration transmitted to the projection screen, thereby reducing and eliminating the jitter of the projection screen. At the same time, the elasticity of the rubber coating itself will not cause the projection screen to shake. On the other hand, the adaptability of the rubber material to a larger temperature range can ensure that the projection screen can maintain stable performance in different temperature environments.

[0034] It should be noted that, in the present embodiment, the formula of the rubber coating used for the reflective layer 20 is not particularly limited. That is to say, according to different performance requirements, the material of the reflective layer 20 can be general-purpose rubbers such as isoprene rubber, styrene-butadiene rubber, butadiene rubber, chloroprene rubber and their modified products, or special rubbers such as nitrile rubber, silicone rubber, fluororubber, polysulfide rubber and their modified products, or can be formed by a synthetic coating with the above-mentioned rubber as the main component. As long as the rubber coating can meet the above-mentioned use requirements of the present invention, it can be used as the reflective layer 20.

[0035] Furthermore, in this embodiment, scattering particles 21 composed of materials known in the field of projection screens, such as aluminum silver powder and mica sheets, are dispersed inside or near the surface of the reflective layer 20. On the one hand, by doping the scattering particles 21 in the reflective layer 20, the projection light is reflected on the surface of the reflective layer 20 and diffused, so that the reflective layer 20 has a high reflectivity and a large scattering angle, thereby increasing the visible range of the projected image of the curling screen. On the other hand, by adding scattering particles 21 to the rubber layer, the elasticity of the rubber layer can be improved to reduce or even avoid the screen jitter problem caused by the good elasticity of the rubber coating. In this embodiment, in order to better achieve the reflection and scattering effects, the scattering particles 21 are distributed in the rubber or silicone, and the reflectivity of the reflective layer 20 can reach more than 92%, so that the curling screen can be used in more scenes, such as outdoor and vehicle-mounted.

[0036] In this embodiment, the reinforcing layer 30 can be formed by coating an adhesive such as organic silicone, acrylic resin, unsaturated polyester, polyurethane, epoxy resin, etc. on the second surface 12 of the substrate 10. The flexibility of the reinforcing layer 30 can be adjusted by adjusting the formula and thickness of the adhesive, thereby adjusting the curling performance of the substrate 10.

[0037] It can be understood that in the present invention, the reinforcing layer 30 is not limited to being formed by coating optical glue on the second surface 12 of the substrate 10, but can also be formed by adhering a flexible substrate to the second surface 12 of the substrate 10. As long as the material can adjust the curling properties of the substrate 10, it can be used as the reinforcing layer 30.

[0038] Furthermore, in the present invention, when the performance of the substrate 10 itself meets the design requirements, the reinforcement layer 30 may also be omitted.

[0039] It can be understood that in the present invention, according to different product performance and optical requirements, the curling screen can further include functional layers commonly used on projection screens, such as a protective layer and a Fresnel optical layer, based on the above structure.

[0040] In this embodiment, a reflective layer 20 is provided on the substrate 10. The substrate 10 adopts fabric material as the main material, and the reflective layer 20 adopts rubber or silicone as the main material. The rubber or silicone is coated on the substrate 10. On the one hand, the fabric and rubber or silicone have similar temperature-sensing properties, thereby effectively preventing the layer structures from falling off and ensuring the service life and performance of the curved screen. On the other hand, the fabric and rubber layer or silicone can effectively utilize the ductility of the fabric material to make the curved screen have better shock resistance.

[0041] The present invention also provides a vehicle-mounted projection screen, which includes the rolled screen in the aforementioned embodiment.

[0042] Compared with the prior art, the above-mentioned rolled screen for vehicle-mounted projection provided in this embodiment uses a rubber coating as a reflective layer. On the one hand, it utilizes the good elasticity of the rubber material to weaken and eliminate the vibration transmitted to the projection screen, thereby reducing and eliminating the shaking of the projection screen. On the other hand, it utilizes the adaptability of the rubber material to a large temperature range to ensure that the projection screen can maintain stable performance in different temperature environments.

[0043] Furthermore, by doping the scattering particles in the reflective layer, the projection light is reflected on the surface of the reflective layer and diffused at the same time, so that the reflective layer has a high reflectivity and a large scattering angle, thereby increasing the visible range of the projected image of the curved screen for vehicle-mounted projection. At the same time, by adding scattering particles to the rubber layer, the elasticity of the rubber layer can also be improved to avoid the screen jitter problem caused by the good elasticity of the rubber layer.

[0044] The above descriptions are merely embodiments of the present application and are not intended to limit the patent scope of the present application. Any equivalent structure or equivalent process transformation made using the contents of the present application specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present application.

Claims

1. A roll-up screen, comprising a substrate and a reflective layer formed on one side of the substrate, characterized in that: The reflective layer is a coating layer comprising rubber.

2. The roll-up screen according to claim 1, characterized in that: The reflective layer is an organic silicon rubber coating.

3. The roll-up screen according to claim 1, characterized in that: The reflectivity of the reflective layer to visible light is ≥92%.

4. The roll-up screen according to claim 2, characterized in that: The organic silicon rubber coating is doped with scattering particles.

5. The roll-up screen according to claim 4, characterized in that: The substrate includes a first surface and a second surface opposite to each other. The reflective layer is formed on the first surface. A reinforcing layer is further formed on the second surface. The reinforcing layer is used to adjust the curling performance of the curling screen.

6. The roll-up screen according to claim 5, characterized in that: The material of the substrate is fabric.

7. A vehicle-mounted projection screen, characterized in that: The vehicle-mounted projection screen comprises the rolled screen according to claims 1-6.

Images