Vehicle-mounted projection device and vehicle

Abstract

The utility model relates to a vehicle-mounted projection device and a vehicle, and the vehicle-mounted projection device comprises a projection curtain which is arranged in a vehicle body and can be unfolded and folded; the curtain fixing device is mounted on the vehicle body, the curtain fixing device comprises a mounting part and a positioning part, the mounting part is connected to the vehicle body, and the positioning part can be movably connected with the mounting part, so that the positioning part can fix or release the projection curtain when the projection curtain is unfolded. When the projection curtain is unfolded, the positioning piece can be controlled to move to the position where the projection curtain can be fixed, and then the projection curtain is fixed. When the projection curtain needs to be folded, the positioning piece can be controlled to move so as to release the projection curtain, and then the projection curtain is folded. In this way, the curtain fixing device can fix the projection curtain when the projection curtain is unfolded, and unfolding or folding of the projection curtain is not affected.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of vehicle engineering, in particular to a vehicle-mounted projection device and a vehicle. BACKGROUND

[0002] Vehicle-mounted projection screens are increasingly widely used in vehicles. However, under the bumpy working conditions of vehicle driving, the projection screen cannot be well kept in an unfolded state, and the reliability and stability are not enough when used, thereby affecting the use experience. CONTENT OF THE UTILITY MODEL

[0003] Therefore, the utility model provides a vehicle-mounted projection device and a vehicle, which ensure that the projection screen keeps good stability in an unfolded state.

[0004] According to one aspect of the present application, a vehicle-mounted projection device is provided, comprising:

[0005] A projection screen is arranged in a vehicle body and can be unfolded and folded;

[0006] A screen fixing device is installed on the vehicle body, and the screen fixing device comprises a mounting member and a positioning member, the mounting member is connected to the vehicle body, and the positioning member is movably connected to the mounting member, so that the positioning member can fix or release the projection screen when the projection screen is unfolded.

[0007] In some embodiments, the mounting member is installed on a B-pillar or a roof of the vehicle body.

[0008] In some embodiments, the B-pillar is provided with a containing groove, and the mounting member is at least partially located in the containing groove.

[0009] In some embodiments, the projection screen is configured to be unfolded along the height direction of the vehicle body, and the positioning member fixes the side edges of the projection screen in the width direction of the vehicle body.

[0010] In some embodiments, the screen fixing device is arranged in pairs, and the two screen fixing devices are respectively installed on the left B-pillar and the right B-pillar.

[0011] In some embodiments, the positioning member comprises a magnetic member, the magnetic member is adsorbed and fixed with the projection screen, or the positioning member is clamped and fixed with the projection screen, or the positioning member comprises a clamping part, the clamping part is used to clamp the projection screen together with the vehicle body, or the clamping part is configured to clamp the projection screen by itself.

[0012] In some embodiments, the screen fixing device further includes a driving component, which includes a power source and a transmission mechanism. The power source is mounted on the mounting member, and the transmission mechanism drives the power source and the positioning member. The positioning member can switch between a first position and a second position relative to the mounting member under the drive of the driving component. When the positioning member is in the first position, it avoids the unfolding or retracting of the projection screen. When the positioning member is in the second position, it fixes the projection screen.

[0013] In some embodiments, the mounting member is provided with a mounting groove, the positioning member is hinged to the mounting member, and when the positioning member is in the first position, both the positioning member and the driving assembly are located within the mounting groove.

[0014] In some embodiments, the projection screen unfolding and retracting mechanism is electrically connected to the central control system inside the vehicle body, and the power source is electrically connected to the central control system inside the vehicle body; in response to the projection screen switching from a retracted state to an unfolded state, the drive component controls the positioning member to move from the first position to a second position; in response to the drive component controlling the positioning member to leave the second position, the unfolding and retracting mechanism controls the projection screen to automatically retract.

[0015] Another aspect of this application provides a vehicle that includes the aforementioned vehicle-mounted projection device.

[0016] In this application, when the projection screen is unfolded, the positioning component can be moved to a position that can fix the projection screen, thereby securing the projection screen; and when it is necessary to retract the projection screen, the positioning component can be moved to release the projection screen, thereby retracting the projection screen. In this way, the screen fixing device can fix the projection screen when it is unfolded, without affecting the unfolding or retraction of the projection screen. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of a vehicle according to an embodiment of this application.

[0018] Figure 2 and Figure 3 These are schematic diagrams showing the projection screen being fixed and unfixed using the screen fixing device according to embodiments of this application.

[0019] Figure 4 This is a schematic diagram of the curtain fixing device in the retracted state according to an embodiment of this application.

[0020] Figure 5 The schematic diagram of the curtain fixing device in the retracted state according to the application embodiment shows that the right shell of the positioning member is hidden.

[0021] Figure 6This is a schematic diagram of the curtain fixing device in the retracted state according to an embodiment of this application.

[0022] Figure 7 The schematic diagram of the curtain fixing device in the retracted state according to the application embodiment shows that the right shell of the positioning member is hidden.

[0023] Figure 8 This is a control principle diagram of the curtain fixing device according to an embodiment of this application.

[0024] Figure label:

[0025] 100. Vehicle; 10. Vehicle body; 110. Cabin; 111. Driver's cabin; 112. Passenger cabin; 120. B-pillar; 130. Roof; 140. Central control system; 20. Projection screen; 30. Screen fixing device; 310. Mounting component; 311. Left housing; 312. Right housing; 313. Rotating shaft; 314. Mounting slot; 320. Positioning component; 321. Clamping part; 322. Clamping space; 330. Drive assembly; 331. Power source; 332. Transmission mechanism; 3321. Lead screw; 3322. Slider; 3323. Connecting pipe; 333. Upper sensor; 334. Lower sensor; 340. Pivot. Detailed Implementation

[0026] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0027] In the description of this application, it should be understood that if terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" appear, these terms indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0028] Furthermore, where the terms "first" and "second" appear, these terms are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, where the term "multiple" appears, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0029] like Figure 1 As shown, this application provides a vehicle-mounted projection device and a vehicle 100. The vehicle-mounted projection device includes a projection screen 20 and a screen fixing device 30 disposed within the vehicle body 10 of the vehicle 100. The screen fixing device 30 disposed within the vehicle body 10 can reliably fix the vehicle-mounted projection screen 20 when it is unfolded.

[0030] like Figure 1 As shown, the vehicle 100 of this application includes a vehicle body 10, the vehicle body 10 includes a cabin 110, a projection screen 20 disposed within the cabin 110 and capable of being unfolded and retracted, and a screen fixing device 30 mounted on the vehicle body 10. The projection screen 20 can be unfolded and retracted. The screen fixing device 30 is mounted on the vehicle body 10. The screen fixing device 30 includes a mounting member 310 and a positioning member 320. The mounting member 310 is connected to the vehicle body 10, and the positioning member 320 is movably connected to the mounting member 310 so that the positioning member 320 can fix the projection screen 20 when it is unfolded.

[0031] In this application, such as Figure 1 As shown, the vehicle cabin 110 specifically includes a driver's cabin 111 and a passenger cabin 112. The projection screen 20 is specifically installed in the passenger cabin 112. The screen fixing device 30 is installed on the B-pillar 120 or the roof 130 of the vehicle body 10.

[0032] like Figure 2 As shown, the projection screen 20 can be unfolded; as Figure 3 The projection screen 20 shown can be retracted. When unfolded, the projection screen 20 can be used to view images. Optionally, the projection screen 20 can be unfolded or retracted electrically. Optionally, the projection screen 20 can be unfolded manually and automatically retracted by a manual-assisted automatic winding mechanism. The method of unfolding or retracting the projection screen 20 can be based on conventional methods in the art, and will not be described in detail here.

[0033] like Figure 2 and Figure 3As shown, in this embodiment, the curtain fixing device 30 is specifically installed on the vehicle body 10 via a mounting component 310, such as on the B-pillar 120 or the roof 130. Taking installation on the B-pillar 120 as an example, the mounting component 310 can be installed on the B-pillar 120 by means of screw connection, snap-fit ​​connection, etc. It is easy to understand that the specific structure, shape, and size of the mounting component 310 can be flexibly adjusted according to the selected installation method, the size of the B-pillar 120, and other conditions.

[0034] The positioning member 320 is movably connected to the mounting member 310, thereby allowing the positioning member 320 to switch between different positions relative to the mounting member 310. The positioning member 320 may be connected to the mounting member 310 in a sliding or rotating manner, for example.

[0035] In this application, after the projection screen 20 is unfolded, the positioning member 320 can be moved to a position that can fix the projection screen 20, thereby fixing the projection screen 20, such as... Figure 2 As shown; when it is necessary to retract the projection screen 20, the positioning component 320 can be moved to release the projection screen 20, and then the projection screen 20 can be retracted, as shown. Figure 3 As shown. In this way, the screen fixing device 30 can fix the projection screen 20 when it is unfolded, without affecting the unfolding or retraction of the projection screen 20.

[0036] In an optional embodiment, the B-pillar 120 is provided with a receiving groove, and the mounting member 310 is at least partially located in the receiving groove.

[0037] In this embodiment, the mounting member 310 is configured to be at least partially concealed within the B-pillar 120, thereby reducing its impact on the vehicle's interior space. Specifically, the B-pillar 120 has a receiving groove on its surface facing the interior of the vehicle body 10, and the mounting member 310 is inserted into and installed within the receiving groove.

[0038] Furthermore, the positioning member 320 can also move into the receiving slot, so that when the projection screen 20 does not need to be fixed, the positioning member 320 is also hidden in the receiving slot, which can reduce the space occupied in the vehicle.

[0039] In an optional embodiment, the projection screen 20 is configured to unfold along the height direction of the vehicle body 10, and the positioning member 320 fixes the projection screen 20 to the side in the width direction of the vehicle body 10.

[0040] The positioning element 320 can be fixed to the projection screen 20 at its top corner, side, or bottom edge. The top of the projection screen 20 is close to the roof 130. In this way, the screen fixing device 30 keeps the projection screen 20 in an unfolded state in the height direction of the vehicle body 10, so that it can be viewed by passengers in the passenger compartment 112.

[0041] Furthermore, in this application, such as Figure 2 and Figure 3As shown, the screen fixing devices 30 are arranged in pairs, with the two screen fixing devices 30 respectively installed on the left B-pillar 120 and the right B-pillar 120. In this way, the two screen fixing devices 30 can fix the two top corners or the two opposite sides of the projection screen 20 and tension them to both sides, so that the projection screen 20 is in the unfolded state and maintains good flatness, thereby providing a better viewing experience.

[0042] In an optional embodiment, the mounting member 310 has a mounting groove 314 for receiving the positioning member 320 (see [link]). Figure 4 The positioning element 320 can be at least partially accommodated within the mounting groove 314. Thus, the curtain fixing device 30 has a small size when not in use.

[0043] In an optional embodiment, the mounting member 310 is provided with a retaining structure, and the positioning member 320 can engage with or disengage from the retaining structure. The retaining structure is, for example, a protrusion, and the positioning member 320 is provided with a slot. Thus, when it is not necessary to fix the projection screen 20, the positioning member 320 is folded with the mounting member 310 through the engagement of the slot and the protrusion; when it is necessary to fix the projection screen 20, the slot of the positioning member 320 disengages from the protrusion, and the positioning member 320 unfolds relative to the mounting member 310.

[0044] In an optional embodiment, the positioning member 320 includes a magnetic element, which is attracted and fixed to the projection screen 20. Specifically, the positioning member 320 has a magnetic element inside or on its surface. The magnetic element can be a magnet or a magnetic stone. The magnetic element is magnetically attracted to a corresponding magnetic part on the projection screen 20, thereby fixing the projection screen 20. The magnetic part on the projection screen 20 can be located at the top corner of the projection screen 20. In other embodiments, the entire positioning member 320 is made of magnetic material, making the positioning member 320 itself entirely magnetic.

[0045] In an optional embodiment, the positioning member 320 is engaged and fixed to the projection screen 20. For example, the projection screen 20 has a groove at its top corner, and the positioning member 320 has a matching protrusion. For example, the projection screen 20 has a round hole at its top corner, and the positioning member 320 has a hook that can be engaged in the round hole.

[0046] In an optional embodiment, the positioning member 320 includes a clamping part 321, which is used to clamp the projection screen 20 together with the vehicle body 10, or the clamping part 321 itself is configured to clamp the projection screen 20.

[0047] The clamping part 321 and the vehicle body 10 together clamp the projection screen 20, that is, the clamping part 321 presses the projection screen 20 onto the vehicle body 10. Specifically, the clamping part 321 presses the top corner of the projection screen 20 onto the B-pillar 120, or presses the top corner of the projection screen 20 onto a support plate fixed to the B-pillar 120 or the roof 130, or presses the top corner of the projection screen 20 onto the driver's seat or the front passenger seat in the passenger compartment 112.

[0048] When the clamping part 321 clamps the projection screen 20, the clamping part 321 can be a clip that can hold the top corner of the projection screen 20, thereby fixing the projection screen 20. Figure 3 As shown, the clamping part 321 may also have its own clamping space 322, which is used to clamp the top corner or side of the projection target. Optionally, the wall of the clamping space 322 is elastic, and the top corner or side of the projection screen 20 can be inserted into the clamping space and elastically clamped in the clamping space 322.

[0049] like Figure 4 to Figure 7 As shown, in an optional embodiment, the curtain fixing device 30 further includes a drive assembly 330, which includes a power source 331 and a transmission mechanism 332. The power source 331 is mounted on the mounting member 310. The transmission mechanism 332 drives the power source 331 and the positioning member 320, which can switch between a first position and a second position relative to the mounting member 310 under the drive of the drive assembly 330. Figure 3 to Figure 5 When the positioning member 320 is in the first position, it can avoid the projection screen 20 from unfolding or retracting; as shown Figure 2 , Figure 6 and Figure 7 As shown, when the positioning member 320 is in the second position, the positioning member 320 can fix the projection screen 20.

[0050] In this embodiment, as Figure 4 and Figure 5 As shown, one end of the positioning member 320 and the mounting member 310 are rotatably connected by a pivot 340, and the other ends of the two can move relative to each other, so that the screen fixing device 30 has a retracted state and an unfolded state. In the retracted state, the positioning member 320 is in a first position, and the positioning member 320 avoids the unfolding or retracting of the projection screen 20. In the unfolded state, the positioning member 320 is in a second position, and the positioning member 320 is in a position that can fix the projection screen 20.

[0051] The power source 331, specifically a motor, is fixed to the positioning component 320. The transmission mechanism 332 includes a lead screw 3321, a slider 3322, and a connecting pipe 3323. The lead screw 3321 is connected to the motor shaft; the slider 3322 is threadedly engaged with the lead screw 3321; and the two ends of the connecting pipe 3323 are hinged to the slider 3322 and the positioning component 320, respectively. When the motor shaft rotates, the slider 3322 moves linearly on the lead screw 3321, thereby driving the positioning component 320 to rotate relative to the mounting component 310 via the connecting pipe 3323, allowing the positioning component 320 to switch between a first position and a second position. Figure 5 and Figure 7 As shown, when the slider 3322 moves linearly along the first direction X, the positioning member 320 can switch from the first position to the second position, and the positioning member 320 retracts into the mounting member 310; when the slider 3322 moves linearly along the second direction Y, the positioning member 320 can switch from the second position to the first position, and the positioning member 320 extends out of the mounting member 310; the first direction X and the second direction Y are opposite. Specifically, in this embodiment, the power source 331 is located below the slider 3322. The first direction X is obliquely downward, and the second direction Y is obliquely upward.

[0052] Furthermore, the mounting component 310 is equipped with an upper sensor 333 and a lower sensor 334. In the direction of movement of the slider 3322, the upper sensor 333 and the lower sensor 334 are located on both sides of the slider 3322. The upper sensor 333 and the lower sensor 334 can be contact or non-contact sensors. By setting the upper sensor 333 and the lower sensor 334, the position of the positioning component 320 can be precisely controlled.

[0053] Specifically, in combination Figure 5 and Figure 7 As shown, when the motor moves the slider 3322 along the first direction X, the traction connecting tube 3323 moves downward and simultaneously pushes the positioning member 320 to unfold relative to the mounting member 310. During this process, when the current sensor 334 senses the slider 3322, the motor stops, and the positioning member 320 unfolds to its final position. When the motor moves the slider 3322 along the second direction Y, the traction connecting tube 3323 moves upward and simultaneously pushes the positioning member 320 to retract relative to the mounting member 310. When the current sensor 334 senses the slider 3322, the motor stops, and the positioning member 320 retracts to its final position.

[0054] In other embodiments, the power source 331 is not limited to an electric motor, but may also be a cylinder. The transmission mechanism 332b is not limited to what has been described above, but may also be a crank-slider mechanism, a connecting rod mechanism, etc.

[0055] In optional implementations, such as Figure 4As shown, the mounting component 310 has a mounting groove 314; the positioning component 320 is hinged to the mounting component 310. When the positioning component 320 is in the first position, both the positioning component 320 and the drive assembly 330 are located within the mounting groove 314 of the mounting component 310. Thus, when the curtain fixing device 30 is retracted, both the positioning component 320 and the drive assembly 330 are protected by the mounting component 310. In the retracted state, the curtain fixing device 30 is small in size and protects the drive assembly 330, reducing the chance of damage.

[0056] Specifically, such as Figure 3 and Figure 4 As shown, the mounting component 310 includes a left housing 311 and a right housing 312, which are joined together and connected by a pivot 313, forming an open mounting groove 314 between them. A positioning component 320 is hinged to the left housing 311 via a pivot 340 and can enter the mounting groove 314 through the opening. A drive assembly 330 is mounted on the inner wall of the left housing 311 and is drively connected to the positioning component 320.

[0057] In this embodiment, when the positioning member 320 is in the first position, the positioning member 320 and the drive assembly 330 are all located within the mounting groove 31 formed by the left housing 311 and the right housing 312. When the positioning member 320 is in the second position, the positioning member 320 partially extends out of the mounting groove 314.

[0058] In optional implementations, such as Figure 8 As shown, the unfolding and retracting mechanism of the projection screen 20 is electrically connected to the central control system 140 of the vehicle 100, and the power source 331 is electrically connected to the central control system 140 of the vehicle 100. In response to the projection screen 20 switching from the retracted state to the unfolded state, the drive component 330 controls the positioning component 320 to move from the first position to the second position; in response to the drive component 330 controlling the positioning component 320 to leave the second position, the unfolding and retracting mechanism controls the projection screen 20 to automatically retract.

[0059] The projection screen 20 is automatically controlled by the central control system 140. When the central control system 140 receives a command to unfold the projection screen 20, it unfolds the screen through the aforementioned unfolding and retracting mechanism. Simultaneously, after the screen is fully unfolded, the central control system 140 controls the positioning component 320 to move from the first position to the second position via the drive component 330.

[0060] When the central control system 140 receives the instruction to retract the projection screen 20, the central control system 140 controls the positioning component 320 to leave the first position through the drive component 330 to release the projection screen 20. Then, the central control system 140 controls the projection screen 20 through the aforementioned unfolding and retracting mechanism.

[0061] The unfolding and retracting mechanism mentioned in this embodiment is a common technical means in the field, such as a scroll mechanism controlled by a motor, which will not be described in detail here.

[0062] Thus, in this embodiment, by simply sending a command to the central control system 140, the automatic unfolding and fixing of the projection screen 20, as well as the automatic retraction of the screen fixing device 30 and the projection screen 20, can be achieved.

[0063] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; 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; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0064] In this application, unless otherwise expressly specified and limited, the use of descriptions such as "above" or "below" the second feature indicates that the first and second features are in direct contact or indirect contact via an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. Similarly, "below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0065] It should be noted that if an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. If an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. If so, the terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used in this application are for illustrative purposes only and do not represent the only possible implementation.

[0066] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0067] The above embodiments merely illustrate several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. A vehicle-mounted projection device, characterized in that, include: A projection screen (20) is installed inside the vehicle body (10) and can be unfolded and retracted; A screen fixing device (30) is installed on the vehicle body (10). The screen fixing device (30) includes a mounting member (310) and a positioning member (320). The mounting member (310) is connected to the vehicle body (10), and the positioning member (320) is movably connected to the mounting member (310) so that the positioning member (320) can fix or release the projection screen (20) when the projection screen (20) is unfolded.

2. The vehicle-mounted projection device according to claim 1, characterized in that, The mounting component (310) is installed on the B-pillar (120) or roof (130) of the vehicle body (10).

3. The vehicle-mounted projection device according to claim 2, characterized in that, The B-pillar (120) is provided with a receiving groove, and the mounting component (310) is at least partially located within the receiving groove.

4. The vehicle-mounted projection device according to claim 1, characterized in that, The projection screen (20) is configured to unfold along the height direction of the vehicle body (10), and the positioning member (320) fixes the side of the projection screen (20) in the width direction of the vehicle body (10).

5. The vehicle-mounted projection device according to claim 4, characterized in that, The curtain fixing devices (30) are arranged in pairs, and the two curtain fixing devices (30) are respectively installed on the left B-pillar (120) and the right B-pillar (120).

6. The vehicle-mounted projection device according to claim 1, characterized in that, The positioning element (320) includes a magnetic element that is attracted and fixed to the projection screen (20); or the positioning element (320) is snapped and fixed to the projection screen (20); or the positioning element (320) includes a clamping part (321) for clamping the projection screen (20) together with the vehicle body (10), or the clamping part (321) is configured to clamp the projection screen (20).

7. The vehicle-mounted projection device according to claim 1, characterized in that, The screen fixing device (30) further includes a driving assembly (330), which includes a power source (331) and a transmission mechanism (332). The power source (331) is installed on the mounting member (310), and the transmission mechanism (332) drives the power source (331) and the positioning member (320). The positioning member (320) can switch between a first position and a second position relative to the mounting member (310) under the drive of the driving assembly (330). When the positioning member (320) is in the first position, it avoids the unfolding or retracting of the projection screen (20). When the positioning member (320) is in the second position, it fixes the projection screen (20).

8. The vehicle-mounted projection device according to claim 7, characterized in that, The mounting component (310) is provided with a mounting groove (314). The positioning component (320) and the mounting component (310) are hinged together. When the positioning component (320) is in the first position, both the positioning component (320) and the drive assembly (330) are located in the mounting groove (314).

9. The vehicle-mounted projection device according to claim 7, characterized in that, The projection screen (20) unfolding and retracting mechanism is electrically connected to the central control system (140) inside the vehicle body (10), and the power source (331) is electrically connected to the central control system (140) inside the vehicle body (10); In response to the projection screen (20) switching from a retracted state to an unfolded state, the drive assembly (330) controls the positioning member (320) to move from the first position to the second position; In response to the drive assembly (330) controlling the positioning element (320) to leave the second position, the unfolding and retracting mechanism controls the projection screen (20) to automatically retract.

10. A vehicle (100), characterized in that, Includes the vehicle-mounted projection device as described in any one of claims 1-9.

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