A vehicle-mounted projection screen device and vehicle

Abstract

This application relates to the field of projection display technology, and more particularly to a vehicle-mounted projection screen device and vehicle. The vehicle-mounted projection screen device includes a housing, a roller assembly, and a projection screen. The housing is installed inside the vehicle. The roller assembly includes a rotating shaft and a drive motor. The rotating shaft is rotatably disposed within the housing. The drive motor is disposed within the housing and connected to the rotating shaft. A first side of the projection screen is connected to the rotating shaft. When the drive motor drives the rotating shaft to rotate in a first direction, the projection screen can be rolled around the rotating shaft and stored inside the housing. When the drive motor drives the rotating shaft to rotate in a second direction, the projection screen can extend out of the housing and unfold. The first direction and the second direction are opposite. The projection screen includes a substrate layer and a Fresnel layer. The substrate layer has a front side; the Fresnel layer is stacked on the front side. The vehicle-mounted projection screen device provided by this application can improve the user experience.

Description

Technical Field

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

[0002] As the automotive industry undergoes a profound transformation towards electrification, intelligentization, and connectivity, the intelligent cockpit is gradually becoming a core area for vehicle differentiation. In-vehicle projection screens, as a key component for enhancing the "five senses experience" in intelligent cockpits, significantly expand in-vehicle entertainment and information interaction scenarios through large-screen displays and immersive interactive functions.

[0003] Currently, most in-vehicle projection screens use white plastic screens as the projection medium, which achieve image display through the principle of diffuse reflection. Although white plastic screens have advantages such as high color fidelity, wide viewing angle and low cost, they have low gain and lack ambient light resistance design, which makes it easy for the projected content to appear washed out and color to be distorted in complex in-vehicle environments. Especially when the ambient light inside the car is bright during the day, users have difficulty distinguishing the details of the image, thus affecting the user experience. Utility Model Content

[0004] This application discloses a vehicle-mounted projection screen device and vehicle, which can improve the user experience.

[0005] To achieve the above objectives, this application discloses a vehicle-mounted projection screen device, applied to a vehicle, comprising:

[0006] An outer casing, which is installed inside the vehicle;

[0007] The reel assembly includes:

[0008] A rotating shaft, which is rotatably disposed within the housing;

[0009] A drive unit, which is disposed within the housing and connected to the rotating shaft;

[0010] A projection screen, wherein a first side of the projection screen is connected to the rotating shaft, and when the drive motor drives the rotating shaft to rotate in a first direction, the projection screen can be rolled up around the rotating shaft and stored in the housing; when the drive motor drives the rotating shaft to rotate in a second direction, the projection screen can extend out of the housing and unfold, wherein the first direction and the second direction are opposite, and the projection screen includes:

[0011] Substrate layer, the substrate layer having a front side;

[0012] A Fresnel layer, which is stacked on the front side.

[0013] By setting up an outer casing, it can serve as a base for the rotating shaft, and it can also protect the rolled-up projection screen. Furthermore, since the rotating shaft is located inside the vehicle, it can improve the neatness of the vehicle's interior components and enhance the vehicle's aesthetics.

[0014] In addition, when it is necessary to project an image onto the projection screen, the drive motor is first controlled to rotate the shaft in the second direction, so that the projection screen extends out of the outer shell and unfolds. In this way, the projected image can be displayed on the projection screen. When it is not necessary to project an image, the drive motor is controlled to rotate the shaft in the first direction, so that the projection screen is rolled up on the shaft and stored in the outer shell, avoiding taking up space inside the vehicle. This improves the flexibility of using the projection screen.

[0015] Furthermore, because a Fresnel layer is set on the front of the substrate layer, and the Fresnel layer has a Fresnel structure, it can block more stray light and improve the gain and brightness of the projection screen. Therefore, by setting a Fresnel layer on the front, on the one hand, it can block and absorb stray light, reducing the interference of stray light on the projected image; on the other hand, it can improve the convergence of incident light on the projection screen, thereby improving the clarity of the projected image. It can also improve the clarity of the projected image display in bright ambient light, thus improving the user experience.

[0016] In some possible implementations, the projection screen further includes:

[0017] A diffusion layer is disposed between the front side and the Fresnel layer.

[0018] Since the diffusion layer can uniformly distribute the incident light, placing a diffusion layer between the front and Fresnel layers can cause the incident light passing through the Fresnel layer to propagate in different directions at the point where it is directly hit by the incident light through scattering, absorption, and refraction. This reduces glare at the point where the incident light is directly hit, improves the visual comfort of the projected image on the projection screen, and allows viewers at different angles to obtain a clear projected image.

[0019] In some possible implementations, the substrate layer also has a back side, which is opposite to the front side;

[0020] The projection screen also includes:

[0021] A scratch-resistant layer is stacked on the back side.

[0022] By setting an anti-scratching layer on the back of the substrate layer, the anti-scratching function of the projection screen can be improved.

[0023] In some possible implementations, the vehicle-mounted projection screen device further includes:

[0024] A support bracket, one end of which is connected to the outer shell and the other end of which is connected to the second side of the projection screen, has a first state and a second state. In the first state, the support bracket is housed inside the outer shell. In the second state, the support bracket is unfolded to support the unfolded projection screen. The second side is opposite to and parallel to the first side.

[0025] Therefore, by setting up a support bracket, the projection screen can be supported when it is unfolded, thereby preventing the projection screen from shaking when the user is watching the projected image. This is especially beneficial when the vehicle is in motion, as it improves the stability of the projection screen and enhances the user's viewing experience.

[0026] In some possible implementations, the support bracket includes:

[0027] A first connecting rod, one end of which is rotatably connected to the outer casing;

[0028] The second link has one end rotatably connected to the other end of the first link. When the projection screen is rolled up around the pivot, the second link and the first link move closer to each other to be housed in the housing, and when the projection screen is unfolded, the second link and the first link move further apart to support the unfolded projection screen. The other end of the second link is rotatably connected to the second side.

[0029] Therefore, by rotating the first and second links, the projection screen can be easily stored inside the housing when it is rolled up, and can be easily supported when it is unfolded. The structure is simple and easy to operate.

[0030] In some possible implementations, the projection screen further includes opposing third and fourth sides, wherein the third side, the first side, the fourth side, and the second side are connected in sequence;

[0031] The support bracket includes multiple brackets, which are spaced apart along the extension direction of the first side.

[0032] In the second state, the end of the first link of the support bracket near the third side that is connected to the housing is positioned closer to the third side than the end of the first link that is connected to the second link, and / or, the end of the first link of the support bracket near the fourth side that is connected to the housing is positioned closer to the fourth side than the end of the first link that is connected to the second link.

[0033] Since the end of the first link of the support bracket near the third side that is connected to the outer shell is located closer to the third side than the end of the first link and the second link that are connected, when the support bracket near the third side is in the unfolded state, the opening of the angle formed by the first link and the second link in the support bracket faces the third side, which can effectively prevent the projection screen from becoming loose in the area near the third side.

[0034] Similarly, since the end of the first link of the support bracket near the fourth side is connected to the outer shell, it is located closer to the fourth side than the end of the first link connected to the second link. Therefore, it can effectively prevent the projection screen from becoming loose in the area near the fourth side, thereby improving the support effect of the support bracket on the projection screen.

[0035] In some possible implementations, the housing is further provided with a locking element that can lock the support bracket when the support bracket is in the second state.

[0036] By setting a locking mechanism, the support bracket can be locked when the projection screen is unfolded and the support bracket supports the projection screen. This prevents the projection screen from deforming due to shaking when the vehicle is driving in complex road conditions, thereby improving the reliability of the support bracket supporting the unfolded projection screen.

[0037] In some possible implementations, the vehicle-mounted projection screen device further includes:

[0038] A cover plate is connected to the second side, and the support bracket is connected to the second side through the cover plate. In the first state of the support bracket, the cover plate covers the outer shell.

[0039] Therefore, by setting a cover plate, the outer shell can be closed when the projection screen is stored inside the outer shell. On the one hand, this avoids scratching the projection screen inside the outer shell, and on the other hand, it can improve the cleanliness of the vehicle's interior space, thereby enhancing its aesthetics.

[0040] In some possible implementations, the vehicle-mounted projection screen device further includes:

[0041] A position sensing switch is disposed in the housing and electrically connected to the drive motor. The position sensing switch is used to detect the position of the second side of the projection screen. When the position sensing switch detects that the second side has entered the housing, it controls the drive motor to stop driving the rotating shaft to rotate in the first direction or controls the drive motor to drive the rotating shaft to rotate in the second direction to unfold the projection screen.

[0042] This prevents damage to the projection screen caused by prolonged excessive stretching, thus extending the lifespan of the projection screen.

[0043] Secondly, embodiments of this application also provide a vehicle, including:

[0044] Vehicle body;

[0045] A projection light source, which is disposed inside the vehicle body, is used to output incident light;

[0046] The vehicle-mounted projection screen device according to any one of the first aspects, wherein the vehicle-mounted projection screen device is disposed in the vehicle body and located on the light-emitting side of the projection light source, and the projection screen in the vehicle-mounted projection screen device is located on the optical path of the incident light.

[0047] Therefore, by installing an in-vehicle projection screen inside the vehicle, the user's experience of using the vehicle can be improved.

[0048] Compared with the prior art, the beneficial effects of this application are as follows:

[0049] Because a Fresnel layer is set on the front of the substrate layer, and the Fresnel layer has a Fresnel structure, it can block more stray light and improve the gain and brightness of the projection screen. Therefore, by setting a Fresnel layer on the front, on the one hand, it can block and absorb stray light, reducing the interference of stray light on the projected image; on the other hand, it can improve the convergence of incident light on the projection screen, thereby improving the clarity of the projected image. It can also improve the clarity of the projected image display in bright ambient light, thus improving the user experience. Attached Figure Description

[0050] To more clearly illustrate the technical solutions in the embodiments of this application, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0051] Figure 1 This is a schematic diagram of the structure of a vehicle provided in one embodiment of this application;

[0052] Figure 2 This is a schematic diagram of a vehicle-mounted projection screen device provided in an embodiment of this application from a first-view perspective;

[0053] Figure 3 This is a partial exploded view of a vehicle-mounted projection screen device provided in one embodiment of this application;

[0054] Figure 4 This is a cross-sectional view of a projection screen provided in one embodiment of this application;

[0055] Figure 5 This is a schematic diagram of a vehicle-mounted projection screen device provided in an embodiment of this application from a second perspective;

[0056] Figure 6 This is a schematic diagram of the structure of the support bracket in the deployed state according to an embodiment of this application;

[0057] Figure 7 This is a simplified diagram of a support bracket provided in one embodiment of this application;

[0058] Figure 8 This is a schematic diagram of the unfolded state of multiple support brackets in a vehicle-mounted projection screen device according to an embodiment of this application;

[0059] Figure 9 yes Figure 8 Partial exploded view;

[0060] Figure 10 yes Figure 9 A magnified view of a portion of point B in the middle.

[0061] Explanation of reference numerals in the attached figures:

[0062] 100-Vehicle projection screen device;

[0063] 110 - Outer casing;

[0064] 120 - Reel assembly; 121 - Spindle;

[0065] 130 - Projection screen; 131 - First side; 132 - Second side; 133 - Third side; 134 - Fourth side; 130a - Substrate layer; 130b - Fresnel layer; 130c - Diffusion layer; 130d - Scratch-resistant layer; 130a ' -Front; 130a"-Back;

[0066] 140 - Support bracket; 141 - First connecting rod; 1411 - Locking protrusion; 142 - Second connecting rod; 143 - Pull rope; 144 - Elastic element;

[0067] 150 - Locking element; 151 - Locking tongue;

[0068] 160-Cover plate;

[0069] 200 - Vehicle; 210 - Vehicle body; 220 - Front seating area; 230 - Rear seating area; 240 - Projection light source. Detailed Implementation

[0070] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0071] In this application, the terms "upper," "lower," "left," "right," "front," "rear," "top," "bottom," "inner," "outer," "middle," "vertical," "horizontal," "lateral," and "longitudinal" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are primarily for the purpose of better describing this application and its embodiments, and are not intended to limit the indicated device, element, or component to having a specific orientation, or to be constructed and operated in a specific orientation.

[0072] Furthermore, in addition to indicating location or positional relationship, some of the aforementioned terms may also have other meanings. For example, the term "above" may also be used in some cases to indicate a certain dependency or connection relationship. Those skilled in the art can understand the specific meaning of these terms in this application based on the specific circumstances.

[0073] Furthermore, the terms "installation," "setup," "equipped with," "connection," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral structure; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium, or an internal connection between two devices, components, or parts. Those skilled in the art can understand the specific meaning of these terms in this application based on the specific circumstances.

[0074] Furthermore, the terms "first," "second," etc., are primarily used to distinguish different devices, elements, or components (which may be the same or different in specific type and construction), and are not intended to indicate or imply the relative importance or quantity of the indicated devices, elements, or components. Unless otherwise stated, "a plurality of" means two or more.

[0075] As described in the background section, existing in-vehicle projection screen devices generally use white plastic screens as the projection medium. They achieve image display through the principle of diffuse reflection. Although white plastic screens have advantages such as high color fidelity, wide viewing angle and low cost, they have low gain and lack ambient light resistance design. This can easily lead to issues such as whitening of the projected content and color distortion in complex in-vehicle environments. Especially when the ambient light inside the car is bright during the day, users may have difficulty distinguishing image details, thus affecting the user experience.

[0076] Based on this, the present application provides a vehicle-mounted projection screen device that can improve the user experience.

[0077] The technical solution of this application will be further described below with reference to specific embodiments and accompanying drawings.

[0078] See Figure 1 , Figure 2 , Figure 3 and Figure 4 This application provides a vehicle-mounted projection screen device 100, applied to a vehicle 200. The vehicle-mounted projection screen device 100 includes a housing 110, a roller assembly 120, and a projection screen 130. The housing 110 is installed inside the vehicle 200. The roller assembly 120 includes a rotating shaft 121 and a drive motor. The rotating shaft 121 is rotatably disposed within the housing 110. The drive motor is disposed within the housing 110 and connected to the rotating shaft 121. The projection screen 130 has a first... Side 131 is connected to pivot 121. When the drive motor rotates pivot 121 in the first direction, the projection screen 130 can be rolled up around pivot 121 and stored in housing 110. When the drive motor rotates pivot 121 in the second direction, the projection screen 130 can extend out of housing 110 and unfold. The first direction is opposite to the second direction. The projection screen 130 includes a substrate layer 130a and a Fresnel layer 130b. The substrate layer 130a has a front side 130a. ' Fresnel layer 130b is stacked on the front side 130a. ' .

[0079] The outer shell 110 can be made of metal, such as aluminum or stainless steel, or non-metallic materials such as hard plastic.

[0080] The aforementioned drive mechanism can be an electric motor, motor, etc.

[0081] The projection screen 130 has a first side 131 and a second side 132 opposite to each other in the height direction of the vehicle 200, wherein the first side 131 is the edge facing the top of the vehicle 200 and the second side 132 is the edge facing the bottom of the vehicle 200.

[0082] Either the first direction or the second direction mentioned above is clockwise, and the other is counterclockwise. For example, the first direction is clockwise, such as... Figure 3 The direction indicated by arrow A1 is the second direction, which is counterclockwise, as shown in the image. Figure 3 The direction indicated by the arrow in A2.

[0083] The front side 130a of the aforementioned substrate layer 130a 'The substrate layer 130a is made of polyethylene terephthalate (PET) and is the side of the surface facing the projection light source. Because PET has good physical and mechanical properties, it can provide good mechanical support for the projection screen 130.

[0084] The Fresnel layer 130b mentioned above is based on the Fresnel structure, which is a set of semi-concentric circular patterns that go from large to small and then back to large. This structure can block more stray light and improve the gain and brightness of the projection screen 130.

[0085] Based on the above embodiments, it can be seen that by setting the outer shell 110, it can serve as a base for setting the pivot 121. On the other hand, the outer shell 110 can protect the rolled-up projection screen 130. Since the pivot 121 is set inside the vehicle, it can improve the neatness of the interior components of the vehicle 200 and improve the aesthetics of the vehicle 200.

[0086] In addition, when it is necessary to project an image onto the projection screen 130, the drive motor is first controlled to rotate the shaft 121 in the second direction, so that the projection screen 130 extends out of the housing 110 and unfolds. In this way, the projected image can be displayed on the projection screen 130. When it is not necessary to project an image, the drive motor is controlled to rotate the shaft 121 in the first direction, so that the projection screen 130 is rolled up on the shaft 121 and stored in the housing 110, avoiding occupying the interior space of the vehicle 200. In this way, the flexibility of the projection screen 130 is improved.

[0087] Furthermore, due to the front side 130a of the substrate layer 130a ' A Fresnel layer 130b is provided, and the Fresnel layer 130b has a Fresnel structure, which can block more stray light and improve the gain and brightness of the projection screen 130. Therefore, through the front 130a ' The Fresnel layer 130b serves two purposes: firstly, it blocks and absorbs stray light, reducing its interference with the projected image; secondly, it enhances the convergence of incident light on the projection screen 130, thereby improving the clarity of the projected image. It also improves the clarity of the projected image in bright ambient light, thus enhancing the user experience.

[0088] It should be noted that the thickness of the Fresnel layer 130b is not specifically limited. Optionally, the thickness of the Fresnel layer 130b is between 50μm and 80μm. This ensures that the Fresnel layer 130b can converge the incident light while avoiding excessive increase in the thickness of the projection screen 130, thus ensuring the compactness of the projection screen 130 when rolled up.

[0089] Alternatively, the thickness of the substrate layer 130a can be between 40μm and 80μm, which can ensure mechanical support for the projection screen 130 while avoiding excessive increase in the thickness of the projection screen 130.

[0090] In some possible embodiments, see Figure 4 The projection screen 130 also includes a diffusion layer 130c, which is disposed on the front side 130a. ' Between and Fresnel layer 130b.

[0091] Because the diffuser layer 130c can homogenize the distribution of incident light, therefore, on the front side 130a ' A diffusion layer 130c is set between the Fresnel layer 130b and the Fresnel layer 130b. This layer can scatter, absorb, and refract the incident light that passes through the Fresnel layer 130b and directly hit the point of incidence, so that the incident light propagates in different directions. This reduces the glare at the point of incidence and improves the visual comfort of the projected image on the projection screen 130. At the same time, it allows viewers at different angles to obtain a clear projected image.

[0092] Optionally, the material of the diffusion layer 130c includes polyethylene terephthalate material and diffusion particles (such as glass microspheres) doped in the polyethylene terephthalate material.

[0093] In addition, optionally, the thickness of the diffusion layer 130c is between 50μm and 100μm. This ensures that the diffusion layer 130c can distribute the incident light evenly, while avoiding excessive increase in the thickness of the projection screen 130.

[0094] In some possible embodiments, see Figure 4 The substrate layer 130a also has a back side 130a", which is the same as the front side 130a. ' Back to back; the projection screen 130 also includes a scratch-resistant layer 130d, which is stacked on the back side 130a".

[0095] Among them, the back surface 130a" of the substrate layer 130a refers to the side surface of the substrate layer 130a that faces away from the projection light source.

[0096] Therefore, by providing an anti-scratching layer 130d on the back side 130a" of the substrate layer 130a, the anti-scratching function of the projection screen 130 can be improved.

[0097] Alternatively, the thickness of the anti-scratching layer 130d can be between 10μm and 20μm, which ensures the anti-scratching effect of the projection screen 130 while avoiding excessively increasing the thickness of the projection screen 130.

[0098] In addition, optionally, the thickness of the projection screen 130 is between 210μm and 340μm, which allows the overall thickness of the projection screen 130 to be small, achieving a flexible and rollable function.

[0099] In some possible embodiments, see Figure 5 The vehicle-mounted projection screen device 100 also includes a support bracket 140. One end of the support bracket 140 is connected to the housing 110, and the other end is connected to the second side 132 of the projection screen 130. The support bracket 140 has a first state and a second state. In the first state, the support bracket 140 is housed inside the housing 110. In the second state, the support bracket 140 is unfolded to support the unfolded projection screen 130. The second side 132 is opposite to and parallel to the first side 131.

[0100] Therefore, by setting up the support bracket 140, the projection screen 130 can be supported when it is unfolded, thereby preventing the projection screen 130 from shaking when the user is watching the projected image on the projection screen 130. Especially when the vehicle 200 is in motion, it can improve the stability of the projection screen 130 and enhance the user's viewing experience.

[0101] In addition, the structure of the support bracket 140 includes various types. For example, the support bracket 140 has an X-shaped structure when it is unfolded, or it has a V-shaped structure when it is unfolded. In this embodiment, the support bracket 140 is mainly described as having a V-shaped structure when it is unfolded.

[0102] In some possible embodiments, see Figure 5 and Figure 6 The support bracket 140 includes a first link 141 and a second link 142. One end of the first link 141 is rotatably connected to the outer casing 110. One end of the second link 142 is rotatably connected to the other end of the first link 141. When the projection screen 130 is rolled up on the pivot 121, the second link 142 and the first link 141 can move closer to each other to be stored in the outer casing 110. When the projection screen 130 is unfolded, the second link 142 and the first link 141 can move further apart to support the unfolded projection screen 130. The other end of the second link 142 is rotatably connected to the second side 132.

[0103] Therefore, by rotating the first link 141 and the second link 142, the projection screen 130 can be easily stored in the outer casing 110 when it is rolled up, and can be easily supported when it is unfolded. The structure is simple and easy to operate.

[0104] Alternatively, see Figure 7The support bracket 140 also includes a pull rope 143 and an elastic element 144. One end of the pull rope 143 is connected to the first link 141, and the other end passes through the connection between the first link 141 and the second link 142 and is connected to the elastic element 144. The end of the elastic element 144 away from the pull rope 143 is connected to the second link 142. When the first link 141 and the second link 142 move away from each other to support the unfolded projection screen 130, the elastic element 144 is in a stretched state. When the drive stops driving the rotating shaft 121 and the projection screen 130 is rolled up, the first link 141 and the second link 142 can move closer to each other and rotate under the action of the elastic element 144.

[0105] Therefore, when the projection screen 130 is rolled up, it is convenient to store the support bracket 140, and when the first link 141 and the second link 142 are in the unfolded state, there is always tension between the first link 141 and the second link 142, which improves the support effect of the support bracket 140 on the projection screen 130.

[0106] In addition, the aforementioned elastic element 144 can be a telescopic spring, compression spring, or other elastic element 144.

[0107] In some possible embodiments, see Figure 8 The projection screen 130 also includes a third side 133 and a fourth side 134, which are connected sequentially. The third side 133, the first side 131, the fourth side 134 and the second side 132 are connected sequentially. The support bracket 140 includes a plurality of brackets, which are spaced apart along the extension direction of the first side 131. In the second state, the end of the first link 141 of the support bracket 140 near the third side 133 that is connected to the housing 110 is located near the third side 133 relative to the end of the first link 141 that is connected to the second link 142, and / or, the end of the first link 141 of the support bracket 140 near the fourth side 134 that is connected to the housing 110 is located near the fourth side 134 relative to the end of the first link 141 that is connected to the second link 142.

[0108] The aforementioned plurality of support brackets 140 refers to two or more support brackets 140. For example, the support brackets 140 include two, one support bracket 140 is disposed near the third side 133, and the other support bracket 140 is disposed near the fourth side 134.

[0109] Since the end of the first link 141 of the support bracket 140 near the third side 133 is connected to the outer shell 110, it is located closer to the third side 133 than the end of the first link 141 connected to the second link 142. Therefore, when the support bracket 140 near the third side 133 is in the unfolded state, the opening of the angle formed by the first link 141 and the second link 142 in the support bracket 140 faces the third side 133, which can effectively prevent the projection screen 130 from becoming loose in the area near the third side 133.

[0110] Similarly, since the end of the first link 141 of the support bracket 140 near the fourth side 134 that is connected to the outer shell 110 is located near the fourth side 134 relative to the end of the first link 141 that is connected to the second link 142, it can effectively prevent the projection screen 130 from becoming loose in the area near the fourth side 134, thereby improving the support effect of the support bracket 140 on the projection screen 130.

[0111] In some possible embodiments, see Figure 9 and Figure 10 The outer casing 110 is also provided with a locking element 150, which can lock the support bracket 140 when the support bracket 140 is in the second state.

[0112] Specifically, a latching protrusion 1411 is provided at the end of the first link 141 away from the second link 142. The locking member 150 includes a retractable latching tongue 151. When the projection screen 130 is unfolded, and the first link 141 and the second link 142 move away from each other supporting the projection screen 130, the latching tongue 151 can extend and abut against the latching protrusion 1411 to complete the locking of the locking member 150 on the support bracket 140.

[0113] By setting the locking component 150, the support bracket 140 can be locked when the projection screen 130 is unfolded and the support bracket 140 supports the projection screen 130. This prevents the projection screen 130 from deforming due to shaking when the vehicle 200 is driving in complex road conditions, thereby improving the reliability of the support bracket 140 supporting the unfolded projection screen 130.

[0114] In some possible embodiments, see Figure 9 The vehicle-mounted projection screen device 100 also includes a cover plate 160, which is connected to the second side 132. The support bracket 140 is connected to the second side 132 through the cover plate 160. In the first state of the support bracket 140, the cover plate 160 covers the outer shell 110.

[0115] The cover plate 160 can be made of metal or plastic.

[0116] Therefore, by setting the cover plate 160, the outer shell 110 can be closed when the projection screen 130 is stored inside the outer shell 110. On the one hand, this avoids scratching the projection screen 130 inside the outer shell 110, and on the other hand, it can improve the cleanliness of the interior space of the vehicle 200, thereby improving its aesthetics.

[0117] In addition, to improve the aesthetics of the vehicle 200, a decorative element may be optionally provided on the side of the cover 160 that faces away from the inner cavity of the outer shell 110.

[0118] In some possible embodiments, the vehicle-mounted projection screen device 100 further includes a position sensing switch, which is disposed in the housing 110 and electrically connected to the drive motor. The position sensing switch is used to detect the position of the second side 132 of the projection screen 130. When the position sensing switch detects that the second side 132 has entered the housing 110, it controls the drive motor to stop rotating the shaft 121 in the first direction or controls the drive motor to rotate the shaft 121 in the second direction to unfold the projection screen 130.

[0119] This avoids damage to the projection screen 130 due to prolonged excessive stretching, thus extending the lifespan of the projection screen 130.

[0120] See Figure 1 This application embodiment also provides a vehicle 200, which includes a vehicle body 210, a projection light source 240 and the vehicle-mounted projection screen device 100 in the above embodiment. The projection light source 240 is disposed inside the vehicle body 210 and is used to output incident light. The vehicle-mounted projection screen device 100 is disposed inside the vehicle body 210 and is located on the light-emitting side of the projection light source 240. The projection screen 130 in the vehicle-mounted projection screen device 100 is located in the light path of the incident light.

[0121] The vehicle-mounted projection screen device 100 is the same as the vehicle-mounted projection screen device 100 in the above embodiments. Its structure and function are the same as those in the above embodiments, and will not be described again here.

[0122] In addition, the vehicle body 210 has a front cabin area 220 and a rear cabin area 230, and the vehicle projection screen device 100 is located between the front cabin area 220 and the rear cabin area 230. When the user turns on the projection light source 240 through the vehicle system, the drive motor synchronously drives the rotating shaft 121 to rotate in the second direction, so as to roll up and unfold the projection screen 130. At this time, the projection light emitted from the projection light source 240 will be used as the incident light of the projection screen 130 and enter the projection screen 130 to form a projected image.

[0123] Therefore, by installing the in-vehicle projection screen device 100 in the above embodiment inside the vehicle body 210, the user's experience of using the vehicle 200 can be improved.

[0124] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. A vehicle-mounted projection screen device, used in a vehicle, characterized in that, include: A housing (110) is installed inside the vehicle; A reel assembly (120), the reel assembly (120) comprising: A rotating shaft (121) is rotatably disposed within the housing (110); A drive unit, which is disposed inside the housing (110) and connected to the rotating shaft (121); A projection screen (130) has a first side (131) connected to a rotating shaft (121). When the drive motor rotates the rotating shaft (121) in a first direction, the projection screen (130) can be rolled up around the rotating shaft (121) and stored inside the housing (110). When the drive motor rotates the rotating shaft (121) in a second direction, the projection screen (130) can extend out of the housing (110) and unfold. The first direction is opposite to the second direction. The projection screen (130) includes: Substrate layer (130a), said substrate layer (130a) having a front side (130a) ' ); Fresnel layer (130b), said Fresnel layer (130b) is stacked on the front side (130a). ' ).

2. The vehicle-mounted projection screen device according to claim 1, characterized in that, The projection screen (130) also includes: A diffusion layer (130c) is disposed on the front side (130a). ' Between the Fresnel layer (130b) and the Fresnel layer (130b).

3. The vehicle-mounted projection screen device according to claim 1, characterized in that, The substrate layer (130a) further has a back side (130a"), the back side (130a") being adjacent to the front side (130a). ' (Against each other) The projection screen (130) also includes: A scratch-resistant layer (130d) is laminated on the back side (130a).

4. The vehicle-mounted projection screen device according to any one of claims 1-3, characterized in that, The vehicle-mounted projection screen device also includes: A support bracket (140) is provided, one end of which is connected to the outer shell (110) and the other end of which is connected to the second side (132) of the projection screen (130). The support bracket (140) has a first state and a second state. In the first state, the support bracket (140) is housed inside the outer shell (110). In the second state, the support bracket (140) is unfolded to support the unfolded projection screen (130). The second side (132) is opposite to and parallel to the first side (131).

5. The vehicle-mounted projection screen device according to claim 4, characterized in that, The support bracket (140) includes: The first link (141) is rotatably connected to the outer casing (110) at one end; The second link (142) has one end rotatably connected to the other end of the first link (141). When the projection screen (130) is wound around the pivot (121), the second link (142) and the first link (141) can move closer to each other to be housed in the outer casing (110), and when the projection screen (130) is unfolded, the second link (142) and the first link (141) can move further apart to support the unfolded projection screen (130). The other end of the second link (142) is rotatably connected to the second side (132).

6. The vehicle-mounted projection screen device according to claim 5, characterized in that, The projection screen (130) also includes a third side (133) and a fourth side (134) opposite to each other, and the third side (133), the first side (131), the fourth side (134) and the second side (132) are connected in sequence; The support bracket (140) includes a plurality of brackets, and the plurality of support brackets (140) are spaced apart along the extension direction of the first side (131); In the second state, the end of the first link (141) of the support bracket (140) near the third side (133) that connects to the housing (110) is positioned closer to the third side (133) than the end of the first link (141) that connects to the second link (142), and / or, the end of the first link (141) of the support bracket (140) near the fourth side (134) that connects to the housing (110) is positioned closer to the fourth side (134) than the end of the first link (141) that connects to the second link (142).

7. The vehicle-mounted projection screen device according to claim 4, characterized in that, The outer casing (110) is also provided with a locking member (150), which can lock the support bracket (140) when the support bracket (140) is in the second state.

8. The vehicle-mounted projection screen device according to claim 4, characterized in that, The vehicle-mounted projection screen device also includes: A cover plate (160) is connected to the second side (132), and a support bracket (140) is connected to the second side (132) through the cover plate (160). In the first state of the support bracket (140), the cover plate (160) covers the outer shell (110).

9. The vehicle-mounted projection screen device according to any one of claims 1-3, characterized in that, The vehicle-mounted projection screen device also includes: A position sensing switch is disposed in the housing (110) and electrically connected to the drive motor. The position sensing switch is used to detect the position of the second side (132) of the projection screen (130). When the position sensing switch detects that the second side (132) has entered the housing (110), it controls the drive motor to stop driving the rotating shaft (121) to rotate in the first direction or controls the drive motor to drive the rotating shaft (121) to rotate in the second direction to unfold the projection screen (130).

10. A vehicle, characterized in that, include: Vehicle body (210); A projection light source (240) is disposed inside the vehicle body (210) and is used to output incident light; The vehicle-mounted projection screen device (100) according to any one of claims 1-9 is disposed inside the vehicle body (210) and located on the light-emitting side of the projection light source (240), and the projection screen (130) in the vehicle-mounted projection screen device is located on the optical path of the incident light.

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