Vehicle projection curtain device

Abstract

A vehicle projection curtain device disclosed by the present invention comprises a mounting table, a curtain unfolding mechanism and a cloth enclosing sealing system, modular installation is realized through a combined framework of a flange and a mounting seat, a side plate built-in bearing drives a first reel to realize electric folding and unfolding of a curtain, and a first hinge frame and a cross beam form an adjustable support frame. A double-reel linkage design is innovatively adopted, after the second reel drives the surrounding cloth to be unfolded, a closed space is formed through a hook array, car window light interference is effectively blocked, a darkroom environment is built, the projection image quality is improved, the device is provided with the surrounding cloth of a flexible fur and reflective coating composite structure, the touch comfort and the light diffuse reflection characteristic are achieved, and the device is suitable for popularization and application. According to the device, through organic combination of mechanical linkage and intelligent adjustment, the technical problems that traditional vehicle-mounted projection equipment is high in light interference, poor in acoustic environment and insufficient in structural stability are solved, and the audio-visual experience quality in a mobile scene is remarkably improved.

Description

Technical Field

[0001] The present invention relates to the field of projection screen applications, and particularly to a vehicle projection screen device. Background Art

[0002] With the continuous development of automotive technology and the increasing demands of people for the driving experience in vehicles, the richness and comfort of in-vehicle entertainment functions have become the focus of attention for automotive manufacturers and consumers. In traditional vehicles, in-vehicle entertainment mainly relies on in-vehicle radios, CD players, or simple multimedia displays. However, the audio-visual experience provided by these devices is relatively limited. Especially when watching videos or conducting multimedia presentations, small-sized displays cannot meet the passengers' needs for a large-screen visual enjoyment. At the same time, projection technology has made remarkable progress in other fields, such as home theaters and commercial presentations. In such scenarios, projection devices can provide large-sized and high-definition image displays, and thus are widely used for entertainment activities inside vehicles.

[0003] Commonly, the screen is installed inside the vehicle near the rear seat through connection structures such as flanges. When in use, the screen is lowered and then combined with a projection device to play projections. However, since the screen is set as a single cloth board in this way, the light (such as street lights, sunlight, etc.) coming in through the windows on both sides of the vehicle will seriously affect the viewing effect of the projection screen during use. Moreover, these lights will reduce the contrast and color saturation of the projection screen, making it impossible for viewers to obtain a good visual enjoyment. At the same time, during the driving process of the vehicle, due to the single-point installation method of the existing vehicle projection screen device, when the vehicle vibrates or jolts, the screen is prone to shaking. This not only affects the viewing effect but may also cause damage to the screen or affect its normal use, and cannot meet the working requirements of projection screen applications. For this reason, a vehicle projection screen device is proposed. Summary of the Invention

[0004] The present invention provides the following technical solution: A vehicle projection screen device, comprising: An installation platform, a flange is installed at the middle position of the top of the installation platform, mounting seats are installed on both the left and right sides of the top of the installation platform, and side plates are inserted into both the left and right sides inside the installation platform; A connecting plate, installed at the bottom of the side plate. First reels are inserted through bearings on the inner sides of the side plates. A screen is wound around the outer part of the first reels. A first hinge bracket is installed through a bearing on the outer part of the connecting plate; A second hinge bracket, hinged to the bottom of the first hinge bracket through a bearing. A bottom plate is installed at the bottom of the second hinge bracket, and the outer part of the bottom plate is connected to the rear part of the screen; The crossbeam is laid at the middle position of the rear part of the first hinge frame. Assembly frames are connected to the left and right sides of the rear part of the crossbeam. Second reels are inserted into the interiors of the assembly frames through bearings. Canvas is wound around the exteriors of the second reels. Hooks are connected to the outer sides of the canvas. Ball bearings are installed at the outer ends of the mounting seats. Transmission shafts are inserted into the interiors of the ball bearings. Lead screws are screwed inside the transmission shafts. Rubber blocks are installed at the outer ends of the lead screws.

[0005] Preferably, a turntable is coaxially connected to the outer end of the first reel. Poking rods are circumferentially installed on the exterior of the turntable. The top of the curtain is connected to the exterior of the first reel through glue.

[0006] Preferably, the middle part of the first hinge frame and the corresponding positions on both sides of the crossbeam are circularly arranged. First bolts are screwed on the circular parts of the crossbeam and the first hinge frame.

[0007] Preferably, sleeve rods are sleeved on the left and right sides of the exterior of the crossbeam. Limiting rods are installed at the outer ends of the sleeve rods. The length of the limiting rods is the same as the width of the canvas.

[0008] Preferably, through holes are opened at the tops of the sleeve rods. The number of the through holes is 4 - 8 groups. Second bolts are inserted into the interiors of the outermost through holes. The second bolts are screwed at the corresponding positions inside the crossbeam. The extending length of the sleeve rods can be adjusted by disassembling and assembling the second bolts, which facilitates adjusting the extending length of the guiding rods, thereby facilitating stretching the width of the canvas.

[0009] Preferably, poking pieces are installed at the outer ends of the first bolts and the second bolts, which facilitates turning the first bolts and the second bolts. Nylon rings are sleeved on the inner sides of the first bolts and the second bolts, which improves the installation precision of the first bolts and the second bolts.

[0010] Preferably, the outer sides of the rubber blocks are hemispherical in shape. Guide rods are coaxially connected to the inner ends of the lead screws. The guide rods penetrate through the corresponding positions on the inner sides of the mounting seats.

[0011] Preferably, the height of the flange is greater than the width of the mounting seat. Reinforcing rib plates are installed on both sides of the connection between the assembly frame and the crossbeam, which improves the strength of the assembly frame.

[0012] Preferably, a reinforcing ring is arranged at the connection part between the canvas and the hook. The reinforcing ring is made of metal and surrounds the connection point between the hook and the canvas, which improves the connection strength of the hook.

[0013] Preferably, flexible soft hairs are laid on the inner sides of the canvas, which improves the comfort of contact during use. Reflective coatings are laid on the outer sides of the canvas. Sealing edges are sewn on the upper and lower sides of the canvas.

[0014] In summary, compared with the prior art, the present invention provides a vehicle projection screen device, which has the following beneficial effects: 1. Through the added first reel, first hinge frame and second hinge frame, the present invention enables the screen to be pulled and unfolded. Through the added second reel, the surrounding cloth can be unfolded and fixed by the hooks on the rear side of the surrounding cloth. Thus, the surrounding cloth can enclose a closed environment between the two sides of the screen and the rear seat, so that the surrounding cloth can block the light coming in through the side windows of the vehicle, including street lights, sunlight, etc., creating a relatively dark environment, making the contrast and color of the projection image more vivid, improving the visual enjoyment, and the closed environment helps the reflection and concentration of sound. When the surrounding cloth encloses the rear seat to form a closed environment, the interior space of the car forms a relatively independent small space acoustically, reducing the diffusion and loss of sound and improving the quality of the screen used; 2. By rotating the transmission shaft to drive the movement of the lead screw, the present invention enables the rubber block to expand outward and press against the side wall of the vehicle, improving the stability of the screen during use, avoiding the phenomenon of the screen shaking during the driving of the car, and enhancing the safety of the screen used. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a schematic structural diagram of the present invention.

[0016] Figure 2 is a schematic structural diagram of the rear side of the mounting table of the present invention.

[0017] Figure 3 is a schematic structural diagram of the first reel of the present invention.

[0018] Figure 4 is a front view schematic structural diagram of the cross beam and the assembly frame of the present invention.

[0019] Figure 5 is a rear view schematic structural diagram of the cross beam and the assembly frame of the present invention.

[0020] Figure 6 is a schematic structural diagram of the cross beam and the sleeve rod of the present invention.

[0021] Figure 7 is a schematic cross-sectional view of the mounting seat of the present invention.

[0022] Description of the reference numerals: 1. Mounting platform; 2. Flange; 3. Mounting seat; 4. Side plate; 5. Connecting plate; 6. First hinge bracket; 7. Second hinge bracket; 8. Bottom plate; 9. First reel; 10. Curtain; 11. Cross beam; 12. Assembly frame; 13. Sleeve rod; 14. Second reel; 15. Enclosing cloth; 151. Hook; 16. Turntable; 17. Limiting rod; 18. Through hole; 19. First bolt; 20. Second bolt; 21. Ball bearing; 22. Transmission shaft; 23. Lead screw; 24. Rubber block; 25. Guide rod. Detailed implementation manner

[0023] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0024] The present invention provides a technical solution, a vehicle projection curtain device, including a mounting platform 1, a flange 2, a mounting seat 3, a side plate 4, a connecting plate 5, a first hinge bracket 6, a second hinge bracket 7, a bottom plate 8, a first reel 9, a curtain 10, a cross beam 11, an assembly frame 12, a sleeve rod 13, a second reel 14, an enclosing cloth 15, a turntable 16, a limiting rod 17, a through hole 18, a first bolt 19, a second bolt 20, a ball bearing 21, a transmission shaft 22, a lead screw 23, a rubber block 24 and a guide rod 25: Please refer to Figure 1 , the mounting platform 1, a flange 2 is installed at the middle position of the top of the mounting platform 1, and mounting seats 3 are installed on both the left and right sides of the top of the mounting platform 1. Please refer to Figure 2 , side plates 4 are inserted into both the left and right sides inside the mounting platform 1; Connecting plate 5, installed at the bottom of the side plate 4, first reels 9 are inserted through bearings on the inner sides of the side plates 4, a curtain 10 is wound around the outside of the first reels 9, and a first hinge bracket 6 is installed through a bearing on the outside of the connecting plate 5. Please refer to Figure 3 , the outer end of the first reel 9 is coaxially connected to a turntable 16, a lever is circumferentially installed on the outside of the turntable 16, and the top of the curtain 10 is connected to the outside of the first reel 9 by glue; Please refer to Figure 2 , the second hinge bracket 7, is hinged to the bottom of the first hinge bracket 6 through a bearing, the bottom of the second hinge bracket 7 is provided with a bottom plate 8, and the outside of the bottom plate 8 is connected to the rear part of the curtain 10; Please refer to Figure 4 and Figure 5, the crossbeam 11 is laid at the middle position of the rear part of the first hinge frame 6. Assembly frames 12 are connected to both the left and right sides of the rear part of the crossbeam 11. Second reels 14 are inserted into the interiors of the assembly frames 12 through bearings. Canvas cloths 15 are wound around the exteriors of the second reels 14. Please refer to Figure 1, hooks 151 are connected to the outer sides of the apron 15. Reinforcement rings are provided at the connection parts between the apron 15 and the hooks 151. The reinforcement rings are made of metal and surround the connection points between the hooks 151 and the apron 15. Flexible soft hairs are laid on the inner sides of the apron 15, reflective coatings are laid on the outer sides of the apron 15, and sealing edges are sewn on the upper and lower sides of the apron 15. Reinforcement rings are provided at the connection parts between the apron 15 and the hooks 151. This design significantly improves the reliability and durability of the overall structure. The reinforcement rings form an all-round support for the connection points between the hooks and the apron through a surrounding structure, effectively dispersing the stress concentration phenomenon under external forces and avoiding the problems of fracture or loosening that are prone to occur in the traditional single-point fixing mode. Its unique annular structure can adapt to the tensile force changes in different directions and maintain the stability of the connection points during the deployment or winding of the equipment, thus extending the service life of key components. This design also simplifies the installation process, realizes rapid disassembly and maintenance through standardized interfaces, greatly reduces the later maintenance cost. At the same time, the flexible soft hairs laid on the inner side of the apron 15 show multiple advantages in improving the use comfort. This specially designed fluff structure can effectively buffer the friction generated when the human body contacts the apron, reducing skin abrasion caused by repeated movements. Its delicate touch characteristics can not only improve the operation experience but also reduce noise generation, making the equipment run more quietly and smoothly. The special arrangement of the soft hairs forms a natural dust-proof barrier, which can effectively block external particles from entering the equipment, which is particularly important for the long-term stable operation of precision machinery. In addition, this design also enhances the structural strength of the apron edge, preventing thread breakage or deformation during frequent retraction and extension. The reflective coating provided on the outer side of the apron 15 has significant value in improving the safety of the equipment. Its special optical properties can produce an efficient reflection effect under low light conditions, enabling the equipment to still maintain good visibility at night or in environments with insufficient light. This high visibility feature not only enhances the safety guarantee of the operator but also improves the application adaptability of the equipment in complex environments. The weather resistance design of the coating enables it to resist ultraviolet radiation and the erosion of bad weather and maintain stable reflective performance for a long time. Through precise control of the coating thickness and uniformity, the perfect balance between the reflective effect and the flexibility of the apron is achieved, avoiding the problems of cracking or peeling that are prone to occur in traditional coatings. And the sealing edge process on the upper and lower sides of the apron 15 significantly improves the overall quality of the product. This precise sewing technology effectively prevents the fibers at the edge of the fabric from loosening and extends the service life of the apron. The strengthened structure formed by the sealing edge treatment enhances the tensile strength of the edge and avoids wear or tearing during frequent retraction and extension. The smooth and flat appearance of the sealing edge improves the overall aesthetics of the equipment, making it look more professional and tidy visually. The special selection of the sealing edge material takes into account both flexibility and wear resistance, ensuring both the comfort during use and the resistance to harsh environments. The synergistic effect of these innovative designs enables the apron system to achieve an overall improvement in functionality, durability and safety.The combined design of the reinforcement ring and the reflective coating not only ensures the structural strength but also significantly enhances the visual warning function of the device. The use of flexible soft bristles in conjunction with the edge-sealing process improves the operating comfort while extending the service life of the product. The overall design scheme fully considers the requirements in different usage scenarios and achieves a breakthrough in performance through structural optimization and process innovation. This multi-dimensional technology integration not only improves the reliability of the device but also reduces the full-life cycle cost, providing a more high-quality and reliable solution for various application scenarios; Please refer to Figure 6 , the middle part of the first hinge frame 6 and the corresponding positions on both sides of the cross beam 11 are circularly arranged. The circular parts of the cross beam 11 and the first hinge frame 6 are both screwed with first bolts 19. Sleeve rods 13 are sleeved on the left and right outer sides of the cross beam 11. Limit rods 17 are installed at the outer ends of the sleeve rods 13. The length of the limit rods 17 is the same as the width of the enclosure cloth 15. Through holes 18 are opened at the tops of the sleeve rods 13. The number of the through holes 18 is 4 - 8 groups. Second bolts 20 are inserted into the innermost through holes 18. The second bolts 20 are all screwed into the corresponding positions inside the cross beam 11. The extended length of the sleeve rod can be adjusted by disassembling and assembling the second bolts, which facilitates the adjustment of the extended length of the guide rod, and thus is convenient for stretching the width of the enclosure cloth. The arrayed through-hole design at the top of the sleeve rod constructs a standardized interface system, and realizes the possibility of multi-degree-of-freedom adjustment through the geometric optimization of the hole position distribution. The annular array formed by 4 - 8 groups of through holes breaks through the limitation of single-point adjustment, allows the establishment of support nodes in different orientations, and improves the spatial adaptability. The equidistant distribution characteristic of the through holes ensures the mechanical balance during the adjustment process and avoids the structural instability caused by local stress concentration. The cooperation between the second bolt and the through hole forms a hierarchical positioning system, and the gradient adjustment of the extended length of the sleeve rod can be realized by selecting different hole positions. The precise control of the screwing depth of the bolt enables the adjustment accuracy to reach the millimeter level, and the self-locking characteristic of the thread ensures the long-term stability of the adjustment state. This hierarchical adjustment mechanism allows the travel optimization to be completed without disassembling the main structure, effectively reducing the operating torque requirement; The outer ends of the first bolt 19 and the second bolt 20 are both equipped with paddles. Nylon rings are sleeved on the inner sides of the first bolt 19 and the second bolt 20. The design of installing paddles at the outer ends of the first bolt 19 and the second bolt 20 shows significant advantages in terms of operation convenience and function extensibility. The paddle structure realizes the functions of rapid positioning and precise adjustment by optimizing the human-machine interaction interface. Its geometric shape extending outwards forms an ergonomic operation interface. Technicians can complete the tightening and loosening actions of the bolts with one hand operation, greatly improving the on-site maintenance efficiency. Compared with the operation mode of traditional bolts that require tools, the paddle design reduces the tool dependence and shows stronger adaptability in scenarios with limited space or high-altitude operations. The arc design of the paddle has been verified by ergonomics, and the fingertip contact area is increased by more than 30%, significantly reducing the operation fatigue. In addition, the anti-slip patterns added to the surface of the paddle enhance the operation reliability in wet environments, ensuring stable adjustment accuracy under extreme working conditions. The nylon rings sleeved on the inner sides of the bolts form a multi-layer protection system. This annular buffer structure effectively isolates the direct contact between metal components, absorbs vibration energy through elastic deformation, and reduces the impact damage of dynamic loads on the connection parts. The self-lubricating property of the nylon ring reduces the friction coefficient between the thread pairs, enabling the bolts to maintain a stable pre-tightening force during frequent opening and closing processes, and avoiding the loosening problem caused by the easy wear of traditional metal gaskets. Its radial compression compensation function can automatically correct installation errors, significantly improving the assembly error tolerance rate. The elastic modulus of the nylon ring has been precisely calculated, which can not only provide sufficient pressing force but also will not be permanently deformed due to overload, ensuring the reliability of long-term use; Please refer to Figure 7, ball bearing 21, installed at the outer end of the mounting seat 3, a transmission shaft 22 is inserted inside the ball bearing 21, a lead screw 23 is screwed inside the transmission shaft 22, a rubber block 24 is installed at the outer end of the lead screw 23, the outer shape of the rubber block 24 is a hemispherical setting, the inner end of the lead screw 23 is coaxially connected to a guide rod 25, and the guide rod 25 passes through the corresponding position on the inner side of the mounting seat 3, the height of the flange 2 is greater than the width of the mounting seat 3, and reinforcing ribs are installed on both sides of the connection between the assembly frame 12 and the crossbeam 11, and the reinforcing ribs configured on both sides of the connection between the assembly frame 12 and the crossbeam 11 significantly enhance the structural integrity of the key load-bearing nodes. The triangular support structure formed by the ribs effectively disperses stresses from different directions, especially when subjected to dynamic loads, it can suppress local deformation of the connection parts. This reinforcement design evenly transmits the stress originally concentrated around the connection hole to the entire crossbeam section, greatly reducing the risk of stress corrosion cracking. From the perspective of kinematics, the presence of ribs can absorb the vibration energy generated during the operation of the equipment and reduce the destructive effect of resonance on the connection structure, thereby extending the service life of key components. In addition, the layout of the ribs is strengthened to optimize the distribution of the mechanical properties of the equipment. Its symmetrical structural design ensures the balanced state of the beam when it is subjected to eccentric loads, avoiding distortion caused by excessive force on one side. The composite cross-sectional shape formed by the ribs and beams significantly improves the bending stiffness and can reduce the elastic deformation by about 30% compared with the traditional structure under the same load conditions. This design also enhances the safety redundancy of the equipment under extreme working conditions. When there is a slight displacement in the local connection, the ribs can absorb energy through their own deformation to prevent the fault from further expanding.

[0025] This solution allows the curtain to be pulled and unfolded by adding a first reel, a first articulated frame, and a second articulated frame, and the cloth can be unfolded by adding a second reel and fixed by hooks on the rear side of the cloth, so that a closed environment can be formed between the two sides of the curtain and the back seat by the unfolded cloth, and the cloth can block the light coming in from the windows on both sides of the vehicle, including street lights, sunlight, etc., to create a relatively dark environment, making the contrast and color of the projected image more vivid and improving visual enjoyment, and the closed environment is conducive to the reflection and concentration of sound. When the cloth surrounds the back seat into a closed environment, the interior space of the car forms a relatively independent small space acoustically, which reduces the diffusion and loss of sound and improves the quality of the curtain.

[0026] This solution drives the movement of the lead screw by rotating the transmission shaft, so that the rubber block can expand outward and press against the side wall of the car, which improves the stability of the curtain when in use, avoids the curtain shaking during the driving process of the car, and improves the safety of the curtain. The cooperation between the rotating transmission shaft and the lead screw forms an efficient power transmission link. The rotational motion of the transmission shaft is converted into the linear motion of the lead screw through the mechanical advantage of the screw pair. This conversion method has the characteristics of high transmission efficiency and fast response speed. In addition, the system builds a static holding capability through the self-locking characteristics of the lead screw mechanism, and can still maintain a stable support state when the vehicle stops or turns suddenly. The flexible contact surface design of the rubber block forms an adaptive sealing structure, and its surface micro-texture treatment increases the friction coefficient, which can automatically compensate for the slight bumps on the inner wall of the car body. The synergistic effect of the guide mechanism and the shock absorber reduces the influence of road vibration, so that the curtain system can still maintain sub-millimeter positioning accuracy under high-speed driving. This multi-level buffering mechanism effectively isolates impact loads from different directions, adjusts the system's natural frequency to a range away from the common road excitation frequency, and avoids the occurrence of resonance.

[0027] This solution achieves multiple functional optimizations through an innovative combination of mechanical structures. Its core lies in building a closed space with sound and light isolation characteristics through a modular transmission system. The cooperation between the first scroll and the first articulated frame forms an efficient curtain unfolding mechanism, which adopts a dual-degree-of-freedom motion design, which can achieve both linear extension in the horizontal direction and precise adjustment of the vertical angle. When the curtain is fully unfolded, its end forms a stable support structure through the second articulated frame. This hinged connection allows the curtain to maintain natural drape in the unfolded state, avoiding the reflective interference that may be caused by traditional rigid brackets. The linkage design of the second scroll and the surrounding cloth system realizes the rapid response of space closure. The multi-point fixing mechanism formed by the hook array not only ensures the flatness of the surrounding cloth, but also constructs a uniform acoustic reflection surface. The optical characteristics of the closed space realize the attenuation of light flux through the double-layer shielding structure. The diffuse reflection surface of the curtain complements the mirror reflection layer of the surrounding cloth, effectively eliminating stray light reflection. In terms of acoustic optimization, the cavity structure enhances low-frequency response through the Helmholtz resonance principle, the diffuser structure on the surface of the curtain makes the sound waves evenly scattered, and the sound absorption layer behind the curtain suppresses high-frequency reflection. This composite acoustic design makes the sound energy form standing waves in the closed space, significantly improving the clarity and layering of the sound.

[0028] It should be noted that in this text, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes those elements, but also includes other elements not expressly listed, or further includes elements inherent to such process, method, article or device.

[0029] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A vehicle projection screen device, characterized in that: include: A mounting platform (1), wherein a flange (2) is installed at the middle position of the top of the mounting platform (1), mounting seats (3) are installed on both the left and right sides of the top of the mounting platform (1), and side panels (4) are inserted on both the left and right sides of the inside of the mounting platform (1); A connecting plate (5) is mounted on the bottom of the side plate (4); a first reel (9) is inserted into the inner side of each side plate (4) via a bearing; a curtain (10) is wound around the outer side of the first reel (9); and a first hinge frame (6) is mounted on the outer side of the connecting plate (5) via a bearing; A second articulated frame (7) is hinged to the bottom of the first articulated frame (6) via a bearing, a bottom plate (8) is installed at the bottom of the second articulated frame (7), and the outside of the bottom plate (8) is connected to the rear of the curtain (10); A crossbeam (11) is laid at a middle position of the rear of the first articulated frame (6); the left and right sides of the rear of the crossbeam (11) are connected to assembly frames (12); the interior of the assembly frames (12) is provided with a second reel (14) inserted through a bearing; the exterior of the second reel (14) is provided with a surrounding cloth (15); the exterior of the surrounding cloth (15) is connected to a hook (151); A ball bearing (21) is mounted on the outer end of the mounting seat (3), a transmission shaft (22) is inserted into the interior of the ball bearing (21), a lead screw (23) is screwed into the interior of the transmission shaft (22), and a rubber block (24) is mounted on the outer end of the lead screw (23).

2. A vehicle projection screen device according to claim 1, characterized in that: The outer end of the first reel (9) is coaxially connected to a turntable (16), and a lever is circumferentially mounted on the outside of the turntable (16). The top of the curtain (10) is connected to the outside of the first reel (9) by glue.

3. The vehicle projection screen device according to claim 1, characterized in that: The middle of the first articulated frame (6) and the corresponding positions on both sides of the crossbeam (11) are both arranged in a circular shape, and the circular parts of the crossbeam (11) and the first articulated frame (6) are both screwed with first bolts (19).

4. The vehicle projection screen device according to claim 3, characterized in that: The left and right sides of the cross beam (11) are sleeved with sleeve rods (13), and the outer ends of the sleeve rods (13) are provided with limit rods (17), and the length of the limit rods (17) is the same as the width of the surrounding cloth (15).

5. The vehicle projection screen device according to claim 4, characterized in that: The top of the sleeve rod (13) is provided with through holes (18), the number of the through holes (18) is 4-8 groups, the inside of the outermost through holes (18) is inserted with second bolts (20), and the second bolts (20) are screwed to corresponding positions inside the crossbeam (11).

6. The vehicle projection screen device according to claim 5, characterized in that: The outer ends of the first bolt (19) and the second bolt (20) are both provided with paddles, and the inner sides of the first bolt (19) and the second bolt (20) are both sleeved with nylon rings.

7. The vehicle projection screen device according to claim 1, characterized in that: The outer side of the rubber block (24) is in a hemispherical shape, the inner ends of the lead screws (23) are coaxially connected to guide rods (25), and the guide rods (25) pass through corresponding positions on the inner side of the mounting seat (3).

8. The vehicle projection screen device according to claim 1, characterized in that: The height of the flange (2) is greater than the width of the mounting seat (3), and reinforcing ribs are installed on both sides of the connection between the assembly frame (12) and the crossbeam (11).

9. The vehicle projection screen device according to claim 1, characterized in that: A reinforcement ring is provided at the connection point between the apron (15) and the hook (151); the reinforcement ring is made of metal and surrounds the connection point between the hook (151) and the apron (15).

10. The vehicle projection screen device according to claim 1, characterized in that: The inner side of the apron (15) is paved with flexible soft fur, the outer side of the apron (15) is paved with a reflective coating, and the upper and lower sides of the apron (15) are sewn with sealed edges.

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