Vehicle-mounted detachable multi-scene laser projection system and method and vehicle

Abstract

The invention discloses a vehicle-mounted detachable multi-scene laser projection system and method and a vehicle, and relates to the technical field of vehicle-mounted display, the multi-scene laser projection system comprises a projection curtain, a sliding guide rail and a laser projector, the projection curtain is connected with a curtain curling mechanism, and the curtain curling mechanism is used for driving the projection curtain to be unfolded downwards or rolled in the curtain curling mechanism; the sliding guide rail is matched with a roof; the laser projector is connected with the projector adjusting mechanism, the projector adjusting mechanism comprises a linear adjusting module and a rotating module, the laser projector is connected to the lower side of the rotating module through a quick release structure, the rotating module is connected with the linear adjusting module, and the linear adjusting module is used for driving the laser projector to move along the sliding guide rail. And projecting to the unfolded projection curtain or side window. The display area in the cabin can be expanded, and different scene requirements can be met.

Description

Technical Field

[0001] This invention relates to the field of vehicle display technology, and in particular to a vehicle-mounted detachable multi-scene laser projection system, method, and vehicle. Background Technology

[0002] With the development of intelligent cockpits in smart cars, the number and size of in-vehicle displays are increasing, especially the ceiling-mounted screens designed for rear passengers. However, due to limitations such as interior space, front headrest spacing, rear viewing distance, and roof load-bearing capacity, it is impossible to provide passengers with larger screens. Furthermore, accidental touches when the screen is turned on or off can cause safety issues.

[0003] To overcome the problems associated with in-vehicle displays, in-vehicle projection has emerged. For example, existing technology discloses an in-vehicle projection device comprising a forward projection system and a rearward projection system. A flip-drive component rotates the projector, enabling it to project both forward and backward. Another existing technology discloses an in-vehicle projection device including a screen assembly and a projector. The projector is installed inside the vehicle and can project onto a screen, which has an unfolding and retracting function. While these solutions overcome some of the safety hazards associated with display screens, the projector's installation is not flexible enough, limiting its applicability to projects onto a screen. Summary of the Invention

[0004] To address the shortcomings of existing technologies, the purpose of this invention is to provide a vehicle-mounted detachable multi-scene laser projection system, method, and vehicle that can expand the display area inside the cabin to meet different scenario requirements.

[0005] To achieve the above objectives, the present invention is implemented through the following technical solution: In a first aspect, embodiments of the present invention provide a vehicle-mounted detachable multi-scene laser projection system, comprising: A projection screen, connected to a screen roll-up mechanism, the screen roll-up mechanism being used to drive the projection screen to unfold downwards or roll up into it; Sliding guide rails are used to fit the roof of the vehicle; A laser projector is connected to a projector adjustment mechanism, which includes a linear adjustment module and a rotation module. The laser projector is connected to the lower side of the rotation module via a quick-release structure. The rotation module is connected to the linear adjustment module, which is used to move the laser projector along a sliding guide rail to project onto an unfolded projection screen or side window.

[0006] As a further implementation, the linear adjustment module includes a mounting base fixed to the sliding guide rail and a guide block slidably connected to the sliding guide rail, and the rotation module is fixedly connected to the guide block; The laser projector can move with the guide block to adjust the focal length.

[0007] As a further implementation, the linear adjustment module also includes a translation motor and a lead screw connected to the translation motor, and the guide block is threadedly connected to the lead screw; The two ends of the lead screw are connected to the mounting base via bearings.

[0008] As a further implementation, when the laser projector projects onto the side window, the side window is covered with a laser projection film.

[0009] As a further implementation, an infrared sensor is installed in the side window, which is used to activate the side window viewing mode based on touch conditions.

[0010] As a further implementation, the screen roll-up mechanism is connected to a controller, which controls the screen roll-up mechanism by voice, gesture, or button input to unfold or retract the projection screen.

[0011] As a further implementation, the curtain rolling mechanism includes a curtain storage housing, in which a rotating spindle is installed, and the rotating spindle is connected to a drive motor.

[0012] Secondly, embodiments of the present invention also provide a control method for a vehicle-mounted detachable multi-scene laser projection system, comprising: Send the open command via voice, gesture, or keystroke; When the screen roll-up mechanism receives the opening command, it controls the projection screen to extend to the set length. The laser projector is moved to the set position and projects onto the projection screen; or, the laser projector is rotated to face the side window and projects onto the laser projection film attached to the side window.

[0013] As a further implementation, the laser projector adjusts its position according to the extension length of the projection screen.

[0014] Thirdly, embodiments of the present invention also provide a vehicle equipped with the aforementioned multi-scene laser projection system.

[0015] The beneficial effects of this invention are as follows: (1) The projection screen of the present invention is connected to the screen rolling mechanism. The projection screen can be rolled up in the screen rolling mechanism or unfolded. The laser projector can move back and forth and has a rotation function, so that the laser projector can not only adjust the focus, but also adapt to the change of the display area of ​​the projection screen. The laser projector can not only project onto the projection screen, but also project onto the side window to expand the display area in the cabin. In addition, the laser projector can be quickly disassembled to realize multi-scenario application.

[0016] (2) The present invention sets up a side window viewing mode. By attaching a laser projection film to the side window and setting an infrared sensing device, the viewer can watch the movie by touching the side window with their finger, thus realizing human-computer interaction. By turning the car window into a display and interaction window, the limited space inside the car is fully utilized.

[0017] (3) The present invention can control the opening or retraction of the projection screen by voice, gesture, or remote control button, and adjust the extension length of the projection screen. It can also control the forward and backward movement and rotation of the laser projector. The control method is flexible and convenient for users to choose. Attached Figure Description

[0018] The accompanying drawings, which form part of this invention, are used to provide a further understanding of the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an improper limitation of the invention.

[0019] Figure 1 This is an installation diagram of the laser projection system according to one or more embodiments of the present invention; Figure 2 This is a schematic diagram of the curtain rolling mechanism structure according to one or more embodiments of the present invention; Figure 3 This is a schematic diagram of the projection screen unfolded according to one or more embodiments of the present invention; Figure 4 This is a schematic diagram of the projector adjustment mechanism according to one or more embodiments of the present invention; Figure 5 This is a side window projection schematic diagram according to one or more embodiments of the present invention; Figure 6 This is a schematic diagram of the quick-release structure according to one or more embodiments of the present invention; Figure 7 This is a flowchart of the control method according to one or more embodiments of the present invention.

[0020] Among them, 1. projection screen, 2. screen roll-up mechanism, 3. laser projector, 4. projector adjustment mechanism, and 5. sliding guide rail; 20. Screen storage housing; 21. Rotating spindle; 22. Clamping mechanism; 23. Drive motor; 40. Translation motor; 41. Lead screw; 42. Mounting base; 43. Guide block; 44. Rotation motor; 45. Quick release structure. Detailed Implementation

[0021] It should be noted that the following detailed description is illustrative and intended to provide further explanation of the invention. Unless otherwise specified, all technical and scientific terms used in this invention have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. In the description of this invention, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0022] For ease of description, the words "upper," "lower," "front," and "rear" appearing in this invention only indicate that they are consistent with the upper, lower, front, and rear directions of the accompanying drawings. They do not limit the structure and are merely for the purpose of facilitating the description of this invention and simplifying the description. They do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0023] Example 1: Current cockpit development is trending towards intelligence, with powerful SOC chips and a focus on multi-screen and large-screen displays. Existing rear-seat screens fall into two main categories: suspended, embedded, or hidden headrest screens, which offer limited viewing angles and size; and ceiling-mounted screens, which, due to space constraints, have limited display sizes, and viewing large screens at close range can cause eye strain. Therefore, current displays have fixed sizes, making it impossible to adjust the display area to meet diverse passenger needs. Furthermore, during vehicle operation, there is a risk of collision between the display and passengers, especially on bumpy roads.

[0024] Some laser projection display systems have been disclosed in the prior art. Although they have overcome the safety issues of the display screen to a certain extent, most projectors have problems such as insufficient flexibility and limited projection position, which restricts their applicable scenarios.

[0025] Based on this, this embodiment provides a vehicle-mounted detachable multi-scene laser projection system, the purpose of which is to expand the display area inside the cabin to meet the needs of different scenarios inside or outside the cabin, such as... Figure 1 As shown, the multi-scene laser projection system includes a projection screen 1, a screen roll-up mechanism 2, and a laser projector 3. The screen roll-up mechanism 2 is installed on the back of the front seats. The projection screen 1 is connected to the screen roll-up mechanism 2. The projection screen 1 can be rolled up in the screen roll-up mechanism 2 or unfolded.

[0026] The laser projector 3 is mounted on the vehicle roof, located behind the projection screen 1. When not in use, the laser projector 3 can be moved to the rear to avoid collisions with passengers. When in use, the laser projector 3 moves forward along the roof, enabling zoom display. The laser projector 3 also has a rotation function, allowing for projection and interaction via the side windows. Furthermore, the laser projector 3 can be quickly disassembled, enabling multi-scenario applications. Due to the movable and rotating functions of the laser projector 3, it can accommodate adjustments to the extension range of the projection screen 1, increasing the applicability of the entire laser projection system.

[0027] In this embodiment, the projection screen 1 is a flexible screen to avoid the risk of collision and improve safety.

[0028] Specifically, such as Figure 2 and Figure 3 As shown, the screen rolling mechanism 2 includes a screen storage housing 20 and a rotating spindle 21 and a drive motor 23 disposed within the screen storage housing 20. One end of the projection screen 1 is fixed to the rotating spindle 21 by a clamping mechanism 22. The drive motor 23 can drive the rotating spindle 21 to rotate, thereby realizing the rolling up or unfolding of the projection screen 1. The screen storage housing 20 has an opening, through which the other end of the projection screen 1 can extend. In the installed state, the screen storage housing 20 is fixed to the roof of the vehicle with its opening facing downwards, allowing the projection screen 1 to be unfolded vertically and used as a projection carrier.

[0029] In this embodiment, the screen storage housing 20 can be integrally molded from lightweight high-strength alloy or engineering plastic material, which can effectively protect the internal components and reduce the overall weight, thus reducing the load on the vehicle roof. The dimensions of the screen storage housing 20 are set according to the width and thickness of the projection screen 1 and the length of the rotating spindle 21. The rotating spindle 21 is made of high-precision stainless steel round shaft, and its surface is treated with rust prevention and smoothing. On the one hand, it can improve its own structural strength and withstand the tension when the projection screen 1 is rolled up; on the other hand, it can reduce friction with the projection screen 1 and avoid wear on the surface of the projection screen 1. The drive motor 23 has a built-in overload protection device and limit switch. When the projection screen 1 is fully unfolded or rolled up to the limit position, the limit switch can be automatically triggered to cut off the power to the drive motor 23, preventing the motor from overloaded or the projection screen 1 from being excessively stretched.

[0030] The clamping mechanism 22 can be implemented in various ways. In this embodiment, the clamping mechanism 22 can be implemented by the following structure: a continuous slot is machined along the axial direction of the rotating spindle 21, the width of the slot being slightly larger than the width of the projection screen 1, and an anti-slip pad is attached to the inner wall of the slot; the projection screen 1 is inserted into the slot, and then an elastic pressure strip is embedded in the slot, using the squeezing force generated by the elastic deformation of the elastic pressure strip to clamp the projection screen 1. Alternatively, a bolt-type clamping mechanism 22 can be used, with several mounting planes arranged radially on the surface of the rotating spindle 21, and threaded holes pre-drilled on the mounting planes. One end of the projection screen 1 is attached to the mounting plane, and a pressure plate is set on the opposite side of the projection screen 1 from the mounting plane. Then, the pressure plate, the projection screen 1, and the mounting plane are connected by bolts.

[0031] The laser projector 3 in this embodiment has an adjustable zoom function, such as... Figure 1 As shown, a sliding guide rail 5 is installed on the roof, and the length direction of the sliding guide rail 5 is set along the front and rear directions of the vehicle body. In this embodiment, one sliding guide rail 5 is provided and is located at the middle position of the roof; it can be understood that in other embodiments, two sliding guide rails 5 can also be provided, and the two sliding guide rails 5 have a certain distance along the width direction of the vehicle body. The lead screw 41 is provided in one of the sliding guide rails 5, and the other sliding guide rail 5 is provided with a smooth rod for guiding the guide block 43.

[0032] The laser projector 3 is connected to the lower side of the projector adjustment mechanism 4, which is slidably connected to the sliding guide rail 5, thus allowing the laser projector 3 to move. In this embodiment, the sliding guide rail 5 extends from the rear of the vehicle to the back of the front seats, providing sufficient space for the laser projector 3 to move. The laser projector 3 can stop anywhere within the range from the rear of the vehicle to the back of the front seats, allowing it to project images from the rear of the vehicle to the front, meeting the needs of multiple viewers; or it can be moved to the back of the front seats to suit single-person viewing scenarios, effectively expanding the application scenarios of the laser projector 3 in the in-vehicle environment.

[0033] like Figure 4 As shown, the projector adjustment mechanism 4 includes a linear adjustment module and a rotation module. The linear adjustment module is used to move the laser projector 3 along the sliding guide rail 5, and the rotation module is used to rotate the laser projector 3360°. In this embodiment, the linear adjustment module includes a translation motor 40, a lead screw 41, a guide block 43, etc. The lead screw 41 is set parallel to the sliding guide rail 5, and one end of the lead screw 41 is connected to the translation motor 40. To avoid interference between the installation of the translation motor 40 and the screen rolling mechanism 2, the translation motor 40 is set on the rear side of the vehicle. Both ends of the lead screw 41 are connected to the sliding guide rail 5 through mounting seats 42, and the lead screw 41 cooperates with the mounting seat 42 through bearings. The translation motor 40 drives the lead screw 41 to rotate.

[0034] The guide block 43 and the lead screw 41 are threaded together. The laser projector 3 is connected to the lower side of the guide block 43 via a rotating module. When the lead screw 41 rotates, the laser projector 3 can move along the length of the lead screw 41 with the guide block 43. Under the action of the translation motor 40, the lead screw 41 can rotate in both directions, so the laser projector 3 can move forward or backward, thereby realizing focus adjustment.

[0035] In this embodiment, the rotation module includes a rotation motor 44, which is connected to the laser projector 3 via a quick-release structure 45. Driven by the rotation motor 44, the laser projector 3 can project onto the front projection screen 1 and also utilize the side window for projection and interaction. Combining the linear movement function of the laser projector 3, and through the angle adjustment of the rotation motor 44, the position adjustment of the sliding guide rail 5, and the zoom sharpness adjustment, the projection requirements of the projection screen 1 and the side window can be met, ensuring the integrity and clarity of the projected image.

[0036] like Figure 5 As shown, the rotating motor 44 controls the laser projector 3 to rotate to the corresponding side window position. The side window needs to be fitted with the laser projection film, and an infrared sensing device is used at the edge of the side window. When a finger touches the corresponding position of the side window, the infrared sensing device responds according to the coordinates of the touch point, transmits the signal to the domain control host, and connects to the vehicle network to realize interactive multi-scenario applications such as viewing, playing games, and shopping on the side window.

[0037] In this embodiment, the touch coordinates are calculated based on the blocking state of the infrared light path. When a finger touches the side window projection film, it blocks the infrared light path at the corresponding location, causing the receiver at that location to be unable to receive the infrared signal, thus marking the light path as blocked. The coordinate calculation process is as follows: Establish a coordinate system for the projection area: with the upper left corner of the side window projection as the origin (0, 0) and the lower right corner as the maximum coordinate (X). max Y max The infrared matrix maps each "transmit-receive" optical path to a coordinate point in the coordinate system. For single-point touch: if only one optical path is blocked, the coordinates (x, y) corresponding to that path are directly output. For multi-point touch: if multiple optical paths are blocked, the algorithm identifies the center position of the touch area and outputs multiple independent coordinates (x1, y1), (x2, y2). The infrared sensor encodes the calculated touch coordinates (x, y) and touch type (single click, long press, swipe) to generate a standard CAN signal (compatible with vehicle network protocols).

[0038] In this embodiment, the laser projector 3 can be quickly detached from the rotating module via the quick-release structure 45, facilitating its removal for outdoor use. Figure 6As shown, the quick-release structure 45 is implemented using existing technology. For example, the quick-release structure 45 includes a first fixed seat, a second fixed seat, a first elastic positioning member and a second elastic positioning member. The first elastic positioning member and the second elastic positioning member are disposed in the through hole of the side wall of the first fixed seat to support the second fixed seat. When disassembling, it is only necessary to adjust the position of the second elastic positioning member to separate it from the second fixed seat.

[0039] In this embodiment, a rotatable and movable laser projector 3 is used to achieve flexible use inside or outside the cabin. When not in use, the laser projector 3 is moved to the rear of the vehicle to prevent collision with rear passengers. When in use, the laser projector 3 is moved forward along the sliding guide rail 5 by the translation motor 40 driving the lead screw 41 to rotate, thus enabling the laser projector 3 to have adjustable zoom performance. Therefore, the image size and clarity can be adjusted by adjusting the distance between the laser projector 3 and the projection screen 1 to achieve the best viewing effect.

[0040] In this embodiment, each motor is connected to a controller, which sends control commands. The control signals can be voice signals, gesture signals, or remote control button signals. When the drive motor 23 receives a signal to open the projection screen, it controls the rotating spindle 21 to rotate, causing the projection screen 1 to extend downwards from the opening in the screen storage housing 20 until it reaches a set length, at which point the drive motor 23 stops rotating. When the laser projector 1 receives an open command, it opens, projects onto the projection screen 1, and can be moved along the sliding guide rail 5 via voice, gesture, or button control until the optimal viewing effect is achieved.

[0041] The laser projector 1 can also be rotated by voice, gesture or button control. When the rotation motor 44 receives the instruction to rotate to the left or right, the rotation motor 44 drives the laser projector 3 to rotate at the corresponding angle until it is projected onto the display area of ​​the laser projection film that has been attached to the side window.

[0042] This embodiment makes full use of the limited cabin space. The projection screen 1 can be rolled up in the screen storage housing 20 when not in use, occupying little space, and the variable display area can be achieved according to different extension sizes. The laser projector 3 can move back and forth to adjust the focus and adapt to the display area of ​​the projection screen 1. At the same time, the laser projector 3 can rotate 360°, enabling multi-scenario applications inside the vehicle, such as projecting onto the side windows, rear windshield, etc.; when the trunk is open, it can also project onto a screen outside the vehicle. Therefore, this embodiment turns the car windows into display and interaction windows, making full use of the limited space inside the vehicle and further expanding the display space. In addition, the laser projector 3 can be quickly disassembled, allowing it to be used outside the vehicle, meeting different usage scenarios inside and outside the vehicle, and achieving multi-purpose functionality.

[0043] Example 2: This embodiment provides a control method for a vehicle-mounted detachable multi-scene laser projection system, based on the multi-scene laser projection system described in Embodiment 1, such as... Figure 7 As shown, it includes the following steps: Step 1: Power on the entire vehicle.

[0044] The power-on trigger conditions are as follows: automatic power-on after vehicle ignition and start, power-on via manual triggering of entertainment mode by the driver through the central control screen, and power-on via remote command of the key, to meet the needs of different scenarios.

[0045] Step 2: The power-on command for projection screen 1 and laser projector 3 is triggered.

[0046] In this embodiment, three triggering methods are set: voice, gesture, and button, and the command priority is preset, wherein the button command > voice command > gesture command to avoid command conflict.

[0047] For voice commands, the wake word can be customized. The default is the in-vehicle assistant, which supports natural voice commands, such as turning on the projector, turning on the projection screen 1 and the projector. After the command is recognized, the voice feedback is "turning on the projection system", and the progress is displayed on the central control screen. For gesture commands, preset gestures are supported in the preset gesture recognition area of ​​the central control screen, such as opening the palm and holding it for two seconds to turn it on, and making a fist to turn it off; the gesture recognition module has an anti-accidental touch design, only responding to explicit gesture actions to avoid passengers accidentally triggering commands; after successful recognition, the central control screen will display a gesture confirmation animation.

[0048] For button commands, projection activation buttons are set on the multi-function buttons of the central control screen, rear armrest, steering wheel, etc. The command is executed immediately after the button is triggered, and haptic feedback is also set.

[0049] Step 3: Extending control of projection screen 1.

[0050] After receiving the instruction, the projection screen 1 is driven by the drive motor 23 to rotate the main shaft 21, causing the projection screen 1 to extend downwards according to the preset size. After extending the set length, the drive motor 23 stops running.

[0051] In this embodiment, multiple extension sizes can be set to accommodate different numbers of viewers. An infrared ranging sensor can be configured to detect the extension length of the projection screen 1 in real time. When the preset size is reached, a signal is sent to the controller to stop the drive motor 23, preventing the projection screen 1 from over-extending.

[0052] Step 4: Start up the laser projector 3 and adjust its position.

[0053] After receiving the power-on command, the laser projector 3 first performs a self-test (e.g., checking the status of the light source, lens, and communication module). After the self-test passes, the light source is activated, and a calibration image (grid lines) is projected. The projector automatically adapts to the size of the projection screen 1 to scale the image and perform keystone correction to ensure that the image fits the projection screen 1 completely. If the projection screen 1 is not fully extended, the laser projector 3 enters a standby state and automatically starts projection after the projection screen 1 is in place.

[0054] In this embodiment, the laser projector 3 can be moved forward or backward along the sliding guide rail 5 via voice, gestures, or buttons to achieve the best viewing effect. Furthermore, the rotation direction and angle of the laser projector 3 can be adjusted via voice, gestures, or buttons, allowing users to switch adjustment modes as needed. Upon receiving a command to rotate left or right, the rotation motor 44 drives the laser projector 3 to rotate to the target angle, cooperating with the laser projection film attached to the side window to project a display, facilitating passenger viewing through the side window and enabling interactive viewing.

[0055] The laser projector 3 adjusts its position according to the extension length of the projection screen 1. Specifically, the actual extension length data of the projection screen 1 is obtained in advance through the infrared ranging sensor built into the projection screen 1. When the projection screen 1 is in single-person mode (100cm×60cm), the translation motor 40 drives the laser projector 3 to move to the front section of the sliding rail 5 near the front row, so that the image is focused on the upper-middle area of ​​the projection screen 1, adapting to the viewing angle of the front passengers. When the projection screen 1 is in double-person mode (150cm×90cm) or all-passenger mode (200cm×120cm), the laser projector 3 moves backward to the middle or rear section of the sliding rail 5, expanding the projection coverage area so that rear passengers can also clearly see the image.

[0056] During the position adjustment process, the rotating motor 44 can be linked to finely adjust the angle of the laser projector 3, and with its automatic image ratio adjustment and distortion correction, the problems of image offset and distortion caused by the extension and retraction of the projection screen 1 and the displacement of the laser projector 3 can be eliminated.

[0057] This embodiment allows for the opening or retraction of the projection screen 1 via voice, gestures, or remote control buttons, as well as adjustment of the projection screen 1's extension length. It also allows for the control of the laser projector 1's forward and backward movement and rotation. The control methods are flexible and easy for users to choose from, and the multiple control methods prevent malfunctions.

[0058] The control method in this embodiment is based on dual displacement control: the laser projector 3 moves along the sliding guide rail 5, and the rotating motor 44 adjusts the angle. This enables switching between screen projection and side window projection modes. The screen projection mode meets the needs of multiple people watching movies together, while the side window projection mode can be combined with the laser projection film to achieve interactive viewing, information display, and other functions. The switching between the two modes is achieved through a unified command control logic, allowing users to complete the scene transition without additional operation.

[0059] In this embodiment, command signals are transmitted to the projection screen 1 controller, the linear adjustment module of the laser projector 3, and the rotation module via voice, gestures, or remote control buttons to control the opening of the projection screen 1 and the movement or rotation of the laser projector 3. Similarly, the return actions of the projection screen 1 and the laser projector 3 can also be controlled, that is, the projection screen 1 is rolled into the screen storage housing 20 and the laser projector 3 returns to its initial position.

[0060] Example 3: This embodiment provides a vehicle, such as Figure 1 As shown, the multi-scene laser projection system described in Embodiment 1 is installed on the roof of the vehicle. The screen roll-up mechanism 2 is located in front of the sliding guide rail 5 and is located behind the front seat. One end of the sliding guide rail 5 is a certain distance away from the screen roll-up mechanism 2, and the other end extends to the top of the rear seat. The axis of the rotating main shaft 21 is perpendicular to the extension direction of the sliding guide rail 5.

[0061] In this embodiment, the projection screen 1 is in front and the sliding rail 5 is behind, so that the projection screen 1 is in an unobstructed area inside the carriage after it is unfolded. At the same time, sufficient rear movement space is reserved for the sliding rail 5 and the laser projector 3 to avoid interference between the components during operation.

[0062] All components of the laser projection system are installed in a concealed manner on the roof of the vehicle. When the projection screen 1 is folded up, it can be completely stored inside the screen storage housing 20. The sliding guide rail 5 and the projector adjustment mechanism are also in line with the shape of the roof. This not only avoids the components being exposed and affecting the aesthetics and headroom of the vehicle, but also provides effective protection for each component and reduces the impact of vibration during vehicle operation and external environment on the equipment.

[0063] The vehicle in this embodiment uses a combination of laser projection technology and flexible screen to provide users with a richer in-cabin or out-of-cabin experience and enable human-computer interaction.

[0064] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A vehicle-mounted detachable multi-scene laser projection system, characterized in that, include: A projection screen, connected to a screen roll-up mechanism, the screen roll-up mechanism being used to drive the projection screen to unfold downwards or roll up into it; Sliding guide rails are used to fit the roof of the vehicle; A laser projector is connected to a projector adjustment mechanism, which includes a linear adjustment module and a rotation module. The laser projector is connected to the lower side of the rotation module via a quick-release structure. The rotation module is connected to the linear adjustment module, which is used to move the laser projector along a sliding guide rail to project onto an unfolded projection screen or side window.

2. The vehicle-mounted detachable multi-scene laser projection system according to claim 1, characterized in that, The linear adjustment module includes a mounting base fixed to the sliding guide rail and a guide block slidably connected to the sliding guide rail; the rotation module is fixedly connected to the guide block. The laser projector can move with the guide block to adjust the focal length.

3. The vehicle-mounted detachable multi-scene laser projection system according to claim 2, characterized in that, The linear adjustment module also includes a translation motor and a lead screw connected to the translation motor, and the guide block is threadedly connected to the lead screw; The two ends of the lead screw are connected to the mounting base via bearings.

4. The vehicle-mounted detachable multi-scene laser projection system according to claim 1, characterized in that, When the laser projector projects onto the side window, the side window is covered with a laser projection film.

5. A vehicle-mounted detachable multi-scene laser projection system according to claim 4, characterized in that, The side window is equipped with an infrared sensor, which is used to activate the side window viewing mode based on touch conditions.

6. The vehicle-mounted detachable multi-scene laser projection system according to claim 1, characterized in that, The screen roll-up mechanism is connected to a controller, which controls the screen roll-up mechanism by voice, gesture, or button to unfold or retract the projection screen.

7. A vehicle-mounted detachable multi-scene laser projection system according to claim 1 or 6, characterized in that, The curtain rolling mechanism includes a curtain storage housing, inside which a rotating spindle is installed, and the rotating spindle is connected to a drive motor.

8. A control method for a vehicle-mounted detachable multi-scene laser projection system according to any one of claims 1-7, characterized in that, include: Send the open command via voice, gesture, or keystroke; When the screen roll-up mechanism receives the opening command, it controls the projection screen to extend to the set length. The laser projector is moved to the set position and projects onto the projection screen; or, the laser projector is rotated to face the side window and projects onto the laser projection film attached to the side window.

9. The control method for a vehicle-mounted detachable multi-scene laser projection system according to claim 8, characterized in that, The laser projector adjusts its position according to the extension length of the projection screen.

10. A vehicle, characterized in that, The system is equipped with a multi-scene laser projection system as described in any one of claims 1-7.

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