Vehicle-mounted projection system and vehicle

Abstract

The utility model relates to a vehicle-mounted projection system and a vehicle. The vehicle-mounted projection system includes: a skylight glass mounted to a roof of a vehicle; the first projection device is mounted behind a rear row seat of the vehicle; a through opening in a frame of the rear seat, the through opening allowing an optical path from the first projection device through the through opening toward the skylight glass; the first projection device is positioned with a projection direction facing forward and upward such that projection light that forms a real image at the skylight glass is projected from the first projection device to at least a portion of the skylight glass through the through opening. The vehicle comprises the vehicle-mounted projection system.

Description

Technical Field

[0001] The utility model relates to automobiles, in particular to the field of vehicle-mounted multimedia, and specifically to a vehicle-mounted projection system and a vehicle. Background Art

[0002] As vehicles become more multifunctional, passengers no longer simply view vehicles as just a means of transportation. For example, vehicles have entertainment functions in addition to basic travel needs. Now more and more vehicles are adding multimedia displays. In-vehicle projection systems can use projection technology to display multimedia content on surfaces inside the vehicle.

[0003] However, there may be a mismatch between the increasing demand for in-car entertainment and the increasing cost of vehicles, the limited space in vehicles, and the changing environment around vehicles. Specifically, with regard to in-vehicle projection systems, it is expected to enjoy a large screen and a clear viewing experience as well as increased viewing freedom. However, the modification and / or installation of vehicles introduces additional costs. The system-related components should not or should hardly affect the compact arrangement in the vehicle, especially the arrangement related to safety. Under different lighting conditions including strong light environments, the system should keep the performance of the projection display basically stable.

[0004] Therefore, there is a need for a vehicle-mounted projection system and a vehicle that are improved in at least one of the above aspects. Utility Model Content

[0005] According to certain embodiments of the utility model, the improvement can be achieved as follows: a vehicle-mounted projection system, comprising: a sunroof glass, which is mounted to the roof of a vehicle; a first projection device, which is mounted behind the rear seats of the vehicle; a through opening in the frame of the rear seats, which allows a light path from the first projection device to pass through the through opening toward the sunroof glass; the first projection device is positioned so that the projection direction faces forward and upward, so that the projection light that forms a real image at the sunroof glass is projected from the first projection device through the through opening to at least a portion of the sunroof glass.

[0006] According to some embodiments of the present invention, the first projection device is installed in a rear luggage compartment of the vehicle behind the rear seats.

[0007] According to some embodiments of the present invention, the vehicle-mounted projection system includes: a mounting bracket; a shelf having a shelf opening; and the first projection device is mounted to the shelf opening by means of the mounting bracket.

[0008] According to some embodiments of the present invention, the mounting bracket includes a matching section that matches with the opening of the shelf plate and a receiving section that fixedly receives the first projection device.

[0009] According to some embodiments of the present invention, the mating section includes a mating plate extending along at least a portion of an edge of the shelf opening.

[0010] According to some embodiments of the present invention, the matching plate is connected to the storage plate in a positionally adjustable manner along the front-to-back direction.

[0011] According to some embodiments of the present invention, the receiving section includes a base plate and a rear plate, and the first projection device is placed on the base plate and fixed by its rear portion against the rear plate.

[0012] According to some embodiments of the present invention, the receiving section includes side panels and a top panel, and the side panels and the top panel together with the base panel and the rear panel define a space for accommodating at least a corner portion of the first projection device.

[0013] According to some embodiments of the present invention, the mating section and the receiving section of the mounting bracket are connected to each other via an angle adjustment mechanism, and the angle adjustment mechanism defines a lateral adjustment axis, so that the first projection device can adjust the pitch angle.

[0014] According to some embodiments of the present invention, the vehicle-mounted projection system includes a shielding member, which can shield and release the through opening.

[0015] According to certain embodiments of the present invention, the rear seat includes a central armrest as the shielding member, and the central armrest is capable of rotating between a folded-down position and a stowed position. In the folded-down position, the central armrest extends forward and releases the through opening, and in the stowed position, the central armrest abuts against an area of ​​the frame located around the through opening and shields the through opening.

[0016] According to some embodiments of the present invention, the vehicle-mounted projection system includes a rigid cover member, and the rigid cover member is removably covered on the opening of the shelf board.

[0017] According to certain embodiments of the present invention, the vehicle-mounted projection system also includes a second projection device arranged in a central armrest box of the vehicle's driving row seats, and the second projection device is positioned with the projection direction facing upward, so that the projection light that forms a real image at the sunroof glass is directly projected from the second projection device to at least a portion of the sunroof glass.

[0018] According to some embodiments of the present invention, the central console box includes a cover plate as a shielding member of the second projection device, and the cover plate can be rotated between a closed position and an open position to expose at least a projection lens of the second projection device.

[0019] According to some embodiments of the present invention, the skylight glass includes a front glass and a rear glass that are independent of each other, the first projection device projects onto the rear glass, and the second projection device projects onto the front glass.

[0020] According to some embodiments of the present invention, at least one of the skylight glasses includes an inner glass layer, a first adhesive layer, a transparent projection film, a second adhesive layer, a dimming layer, a third adhesive layer and an outer glass layer stacked in sequence.

[0021] According to some embodiments of the present invention, the dimming layer includes one of a PDLC, SPD, LC, and EC dimming layer.

[0022] According to certain embodiments of the present utility model, a vehicle is further provided, comprising the vehicle-mounted projection system according to the present utility model.

[0023] According to the utility model, the vehicle-mounted projection system effectively utilizes the non-driver's compartment space and the existing storage space in the driver's compartment without excessively consuming the luggage compartment; achieves reasonable projection by adjusting the existing structure; helps to ensure consistent projection display effects; and provides improved freedom of use. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a partial schematic diagram of a part of a vehicle including the vehicle-mounted projection system according to the utility model, wherein the vehicle-mounted projection system is shown in a non-working state.

[0025] Figure 2 It is a partial schematic diagram of a part of a vehicle including the vehicle-mounted projection system according to the utility model, wherein a working state of the vehicle-mounted projection system is shown.

[0026] Figure 3 The diagram is a partial schematic diagram of a part of a vehicle including the vehicle-mounted projection system according to the present invention, wherein the rear projection structure of the vehicle-mounted projection system is shown from different viewing angles.

[0027] Figure 4 The diagram is a partial schematic diagram of a part of a vehicle including the vehicle-mounted projection system according to the present invention, wherein the rear projection structure of the vehicle-mounted projection system is shown from different viewing angles.

[0028] Figure 5 yes Figure 4 A partial enlarged view showing a projection device of a rear projection structure and its mounting bracket.

[0029] Fig. 6A and 6B The diagram is a partial schematic diagram of a part of a vehicle including the vehicle-mounted projection system according to the present invention, wherein the rear projection structure of the vehicle-mounted projection system is shown in different states.

[0030] Fig. 7A and 7B The diagram is a partial schematic diagram of a part of a vehicle including the vehicle-mounted projection system according to the present invention, wherein the front projection structure of the vehicle-mounted projection system is shown in different states.

[0031] Figure 8 It is a cross-sectional view of an embodiment of the sunroof glass according to the utility model. DETAILED DESCRIPTION

[0032] The present invention is described with reference to the accompanying drawings, in which certain embodiments of the present invention are shown. However, the present invention can be implemented in many different forms and should not be construed as limited to the embodiments depicted and described herein; on the contrary, these embodiments are provided so that the present disclosure will be thorough and complete and will fully convey the scope of the present invention to those skilled in the art. It will also be understood that the embodiments disclosed herein can be combined in any manner and / or combination to provide many additional embodiments.

[0033] Unless otherwise defined, all technical and scientific terms used in this disclosure have the same meaning as commonly understood by ordinary technicians in the field to which the utility model belongs. The terms used in the above description are only used for the purpose of describing specific embodiments and are not intended to limit the utility model.

[0034] As used herein, when reference is made to the front (front, forward) and the rear (rear, backward), it refers to the direction along the normal forward travel direction of the vehicle and the direction opposite to the aforementioned direction, respectively. When reference is made to the vertical direction, it refers to the direction along the height direction of the vehicle. When reference is made to the lateral direction, it refers to the direction perpendicular to both the normal forward travel direction and the height direction of the vehicle. When reference is made to the inside and the outside, it refers to the direction toward the inside of the vehicle and the direction opposite to the aforementioned direction, respectively.

[0035] Reference now Figure 1 and Figure 2, which shows a partial schematic diagram of a part of a vehicle including the vehicle projection system 1 according to the utility model. In the illustrated case, a vehicle sunroof glass 10 is shown. The sunroof glass 10 can be mounted to the roof of the vehicle. The sunroof glass 10 can be formed as a component of the vehicle projection system 1. In other words, the vehicle projection system 1 can include a sunroof glass 10. Projection display can be achieved at the sunroof glass 10, in particular, a real image is formed. In contrast to forming a virtual image, a real image is displayed in a projection surface, while a virtual image is located in a surface different from the projection surface. Examples of the use of virtual images may include a head-up (head-up) display, which is different from what is described herein. In the illustrated case, a vehicle rear seat 51 and an area 50 behind it are shown. Therefore, the vehicle rear seat 51 described herein can be a row of seats that is closest to the back of the vehicle and defines a certain accommodation space therebetween. This row of seats can, for example, be at least partially reclined. The vehicle projection system 1 may include a first projection device 12. The first projection device 12 can be installed behind the vehicle rear seat 51. When the aforementioned accommodation space forms a vehicle rear luggage compartment, it can also be said that the first projection device 12 is installed in the vehicle rear luggage compartment behind the vehicle rear seats 51. The vehicle-mounted projection system 1 may include a through opening 11 (see Figure 3 , Figure 4 , Figure 5 ).like Figure 3 , Figure 4 , Figure 5 As shown, the through opening 11 may be laterally centered. The through opening 11 may allow a light path from the first projection device 12 to pass through the through opening 11 toward the sunroof glass 10 . Figure 2 The first projection device 12 of the vehicle-mounted projection system 1 can be positioned with the projection direction facing forward and upward, so that the projection light that will form a real image at the sunroof glass 10 can be projected from the first projection device 12 through the through opening 11 to at least a portion of the sunroof glass 10 (for example, the rear portion or the rear glass 10', such as Figure 4 Of course, the projection light projected by the first projection device 12 to form a real image at the skylight glass 10 can be projected from the first projection device 12 to the entire skylight glass 10 through the through opening 11.

[0036] Continue to refer Figure 1 and Figure 2 , which shows a driving row seat 52 of a vehicle including the in-vehicle projection system 1 according to the utility model. Such a driving row seat 52 may mean a row of seats adjacent to the vehicle steering wheel. The row of seats may be at least partially reclined, for example. The driving row seat 52 may generally include two seats arranged transversely and a central armrest box 520 between the two seats, which may also be referred to as a central control box. In some embodiments, the in-vehicle projection system 1 may include a second projection device 15 (see Figure 7B The second projection device 15 may be disposed in a central console box 520 of a vehicle driving row seat 52. The second projection device 15 of the vehicle-mounted projection system 1 may be positioned with a projection direction facing upward, so that the projection light that forms a real image at the sunroof glass 10 is directly projected from the second projection device 15 to at least a portion of the sunroof glass 10 (e.g., the front portion or the front glass 10, such as Figure 4 shown). Figure 2 Of course, the projection light projected by the second projection device 15 to form a real image at the sunroof glass 10 can be directly projected from the second projection device 15 to the entire sunroof glass 10 .

[0037] As non-limiting examples, a movie may be projected on the sunroof glass 10 for in-car entertainment, and / or an animation may be projected on the sunroof glass 10 as customized dynamic ambient light.

[0038] Reference now Figure 3-Figure 5 , which shows the rear projection structure of the vehicle-mounted projection system 1 according to the utility model and some details thereof. Figure 3 , Figure 4 (as well as Figure 1 , Figure 2 , Fig. 6A , Figure 6B ), a shelf 500 is shown. The shelf 500 can be positioned approximately horizontally (but slightly tilted downward as it extends backward in the illustrated case), and divides the upper space and the lower space. In the illustrated case, the shelf 500 can be positioned approximately vertically at a height near the junction of the seat cushion and the backrest of the rear seat 51 of the vehicle. The shelf 500 can have a shelf opening 14. In the illustrated case, the shelf opening 14 can be approximately centered laterally, arranged toward the front of the shelf 500, and close to the rear of the rear seat 51 of the vehicle. The shelf 500 with the shelf opening 14 can be formed as a component of the vehicle-mounted projection system 1, because it will at least partially receive the first projection device 12. In other words, the vehicle-mounted projection system 1 may include a shelf 500 with a shelf opening 14. The vehicle-mounted projection system 1 may include a mounting bracket 13. The first projection device 12 can be mounted to the shelf opening 14 by means of the mounting bracket 13. Since the first projection device 12 is positioned with the projection direction facing forward and upward, the first projection device 12 will be installed in the shelf opening 14 at an angle.

[0039] Continue to refer Figure 5, which shows the enlarged details of the projection device (i.e., the first projection device 12) and the mounting bracket 13 thereof of the rear projection structure of the vehicle-mounted projection system 1 according to the utility model. The mounting bracket 13 may include a matching section 131 that matches with the shelf opening 14 and a receiving section 132 that fixedly receives the first projection device 12. The matching section 131 of the mounting bracket 13 may include a matching plate 1310 that extends along at least a portion of the edge of the shelf opening 14. In the illustrated case, the mounting bracket 13 may include two laterally opposite matching sections 131 and two corresponding spaced-apart matching plates 1310. The two matching plates 1310 may respectively engage at least a portion of one of the two side edges of the shelf opening 14. In an embodiment not shown, the matching section 131 and thus the matching plate 1310 may be integrally continuous, for example, engaging at least a portion of each of the two side edges of the shelf opening 14 and a front edge connecting the two side edges. The matching plate 1310 may be substantially planar so as to be placed on the upper surface of the shelf 500, for example. Alternatively, the mating plate 1310 may be substantially L-shaped or even C-shaped, for example, to snap into the hole wall of the opening 14 and even snap into the thickness of the shelf 500. In some embodiments, the mating plate 1310 may be connected to the shelf 500 in an adjustable position along the front-to-back direction. The mating plate 1310 includes a portion disposed on the upper surface (and / or possible lower surface) of the shelf 500, such a portion or the mated portion of the shelf 500 may include a slot (not shown) so that the mating plate 1310 and thus the mounting bracket 13 are fixed to the shelf opening 14 by a fastener (e.g., threaded) removably passing therethrough, and / or the mating plate 1310 and the shelf 500 may be mated by other reversible means (e.g., snaps and / or latches, etc.).

[0040] If Figure 5It can be seen that the first projection device 12 of the vehicle-mounted projection system 1 according to the utility model is offset toward one side along the transverse direction with respect to its housing. This offset allows the projection lens of the first projection device 12 to be aligned with the aforementioned through opening 11 along the front-to-back direction, for example, also laterally centered. For the retention of the first projection device 12, the receiving section 132 of the mounting bracket 13 may include a base plate 1320 and a rear plate 1321. The first projection device 12 may be placed on the base plate 1320 and fixed by its rear portion against the rear plate 1321 (for example, threadedly, snap-fittingly and / or latchingly, etc.). For example, to accommodate the above-mentioned offset, the rear plate 1321 may include a transverse slot (not shown) to accommodate adjustable positioning. In some embodiments, the receiving section 132 may include a side plate 1322 and a top plate 1323. The side plate 1322 and the top plate 1323 together with the base plate 1320 and the rear plate 1321 may define a space for accommodating at least the corner of the first projection device 12. The plates of the receiving section 132 can be substantially planar. In the illustrated case, the first projection device 12 uses a rear plate 1321 located at one lateral side and also a side plate 1322 and a top plate 1323. In particular, the rear plate 1321 and / or the top plate 1323 can extend in the lateral direction less than the first projection device 12. The top plate 1323 can extend in the front-to-back direction less than the first projection device 12. At the opposite lateral side, the mounting bracket 13 can include another rear plate 1321 and also a side plate 1322 and a top plate 1323. And the base plate 1320 can be continuous as a whole between the opposite sides in the lateral direction. The two rear plates 1321 and also the two side plates 1322 and the two top plates 1323 do not have to be symmetrical about the vertical plane centered in the lateral direction, and the two rear plates 1321 do not have to be flush along the front-to-back direction, resulting in the possibility of increasing the installation adaptability of the projection device of the rear projection structure. In an embodiment not shown, the rear plate 1321 and / or the top plate 1323 may be integrally continuous between laterally opposite sides as the base plate 1320. The rear plate 1321 may have one or more additional openings (not shown) for example, for the passage of cables.

[0041] Figure 5A connection mode of the mating section 131 and the receiving section 132 of the mounting bracket 13 of the vehicle-mounted projection system 1 according to the utility model is shown. In the illustrated case, the mating section 131 and the receiving section 132 of the mounting bracket 13 can be formed or fixed as one piece, so that, for example, the base plate 1320 of the mating section 131 and the mating plate 1310 of the receiving section 132 form an angle. For example, one or more reinforcing ribs 133 can be provided at the transition portion or the connecting portion of the mating plate 1310 of the mating section 131 and the side plate 1322 of the receiving section 132. In an embodiment not shown, the mating section 131 and the receiving section 132 of the mounting bracket 13 can be connected to each other by an angle adjustment mechanism. The angle adjustment mechanism can define a lateral adjustment axis so that the first projection device 12 can adjust the pitch angle. Such an angle adjustment mechanism can be locked after adjustment. For example, the angle adjustment mechanism can include an intermittent mechanism involving a ratchet, or a stepless damping mechanism, as known in the art, and therefore not shown and described in detail.

[0042] Reference now Fig. 6A and Figure 6B , which shows the rear projection structure of the vehicle-mounted projection system 1 according to the utility model in different states at different viewing angles from the aforementioned figures, in particular, the through-opening 11 that is shielded and unshielded, respectively. In the illustrated case, the through-opening 11 can be roughly rectangular. The through-opening 11 can be located in the frame portion between the backrests of two seats arranged laterally in the rear seat 51, and vertically located approximately midway along the backrest. In some embodiments, the vehicle-mounted projection system 1 may include a shielding member. The shielding member can shield and release the through-opening 11. The shielding member can selectively shield at least one of the front end and the rear end of the through-opening 11. The front end and the rear end of the through-opening 11 refer to the corresponding front sides of the opening along the front-to-back direction ( Figure 6B ) and rear side ( Figure 3 and Figure 4 ). The shielding member may generally include a curtain, a cover and / or a valve (e.g., a sliding or pivoting type) or the like. Alternatively or additionally, in the illustrated case, the center armrest 510 of the rear seat 51 may form a (front) shielding member that shields the through opening 11 behind it. The center armrest 510 may be provided at the rear of the rear seat 51. Figure 6B Flipped down position shown and Fig. 6A In the folded-down position, the center armrest 510 can extend forward (and tilt upward) and release the through-opening 11, thereby exposing the through-opening 11. In the folded-down position, the center armrest 510 can abut against the area of ​​the frame around the through-opening 11 (e.g., be placed against a portion around the front end thereof) and cover the through-opening 11, thereby presenting the lower surface of the center armrest 510 in the folded-down position near the backrest.

[0043] Continue to refer Fig. 6A and Figure 6B , which shows additional features of the central armrest 510 of the rear seat 51 of the vehicle including the in-vehicle projection system 1 according to the utility model. The frame of the rear seat 51 can form a receiving recess 511 around the front end of the through opening 11, so that the central armrest 510 in the stowed position is flush with at least a portion of the surrounding area. The central armrest 510 can be locked in the stowed position. For example, the central armrest 510 can include a first part of a latch at the end (tip end) opposite to the end hinged to the frame so as to fit into a second part of the latch located on the top side of the recess 511 in the stowed position.

[0044] In addition, although not shown, the vehicle-mounted projection system 1 may include a rigid cover. The rigid cover may be removably covered on the shelf opening 14. For example, this rigid cover may be a cubic plate shell comprising a top wall, two side walls, and a rear wall. It may cover the first projection device 12 and the mounting bracket 13 inside the shelf 500, thereby providing protection and being able to continue to utilize the space above it for storage.

[0045] Reference now Fig. 7A and Figure 7B , which shows the front projection structure of the vehicle-mounted projection system 1 according to the utility model in different states, in particular, the second projection device 15 is shielded and not shielded. The central console box 520 may include an opening 522 closed by a cover plate 521. The cover plate 521 may be Fig. 7A The closed position shown and Figure 7B The cover plate 521 can be rotated between the open positions shown, thereby exposing at least a portion of the interior of the box body, in particular at least the projection lens of the second projection device 15, through the opening 522. In some embodiments, the second projection device 15 can be arranged on an adjustable support. The support can define a lateral adjustment axis so that the second projection device 15 can adjust the pitch angle. For example, the support can include a bracket with a pin, as known in the art, and therefore is not shown and described in detail. The cover plate 521 can include a first cover plate portion and a second cover plate portion. The two cover plate portions can be rotated in opposite directions to open the opening 522. The first cover plate portion and the second cover plate portion can define a laterally centered seam.

[0046] Reference now Figure 4 and Figure 8 , which shows the structure of the sunroof glass 10 of the vehicle-mounted projection system 1 according to the utility model. In the illustrated case, the sunroof glass 10 may include a rear glass 10" and a front glass 10' that are independent of each other. The first projection device 12 may project onto the rear glass 10". The second projection device 15 may project onto the front glass 10'. Note that, Figure 4 (as well as Figure 1 , Figure 2 ) The frame of the sunroof glass 10 (rear glass 10" and / or front glass 10') may also be drawn. In an embodiment not shown, the sunroof glass 10 may include a single piece of glass (i.e., a whole piece of glass), but it has a rear portion and a front portion that can be projected and displayed differently or even at least partially overlapped. The sunroof glass 10 (rear glass 10" and / or front glass 10') may be formed Figure 8 The laminated structure shown. It can be a composite structure including different layers and / or films. Stacked in sequence from the inside to the outside may include: an inner glass layer 101, a first adhesive layer 102, a transparent projection film 103, a second adhesive layer 104, a dimming layer 105, a third adhesive layer 106 and an outer glass layer 107. Although the cross-section shown in the figure may be flat so that the skylight glass 10 (rear glass 10" and / or front glass 10') may be flat, in an embodiment not shown, the skylight glass 10 (rear glass 10" and / or front glass 10') may be curved. In addition, as needed, each layer and / or film may have an appropriate thickness. The first adhesive layer 102, the second adhesive layer 104, and the third adhesive layer 106 may be layers of optically transparent adhesives, such as polyvinyl butyral (PVB) and the like. In addition to the adhesive layers, the other layers and / or films described may include one or more sub-layers and / or films depending on the technology used. For example, the inner glass layer 101 and / or the outer glass layer 107 may have other suitable coatings as known in the art, such as low-emissivity coatings, etc. For another example, a transparent projection film 103 having good light scattering reflection for projection may include a diffuse reflection sublayer and a substrate sublayer. For the dimming layer 105, it may include one of PDLC, SPD, LC, and EC dimming layers. The first three involve physical dimming, and the last one involves chemical dimming, and generally includes electrodes and a sublayer and / or film of a receiving material. PDLC involves polymer dispersed liquid crystal technology, presenting a dimming effect of transparent and frosted glass, and a response speed of hundreds of milliseconds. SPD involves suspended particle technology, presenting a dimming effect of transparent and dark colors, and a response speed of seconds. LC involves dye liquid crystals, presenting a dimming effect of bright and dark states, and having low haze, and a response speed of hundreds of milliseconds or even lower. EC involves electrochromic, presenting a dimming effect of transparent and colored, and having a chemical change, and a response speed of minutes.

[0047] In this way, the sunroof glass 10 (rear glass 10" and / or front glass 10') can change the light transmission through the dimming layer 105, for example, define a dark state and a bright state. When switched to the dark state, it has a shading function to at least partially block (absorb and / or reflect) external light, so that the projection can have a good effect even in daytime sunlight or ambient light conditions, at least because the contrast of the projected image is increased. When switched to the bright state, you will be able to see outside just like ordinary sunroof glass.

[0048] The present invention further provides a vehicle. The vehicle comprises the vehicle-mounted projection system 1 according to the present invention as described above. As non-limiting examples, such a vehicle may include a fuel vehicle, an electric vehicle and / or a hybrid vehicle.

[0049] The above is an explanation of the utility model and should not be interpreted as a limitation of the utility model. Although exemplary embodiments of the utility model have been described, those skilled in the art will readily appreciate that many modifications may be made in the exemplary embodiments without substantially departing from the novel teachings and advantages of the utility model. Therefore, all such modifications are intended to be included within the scope of the utility model as defined in the claims. The utility model is defined by the appended claims, including the equivalent forms of the claims.

Claims

1. A vehicle-mounted projection system, characterized in that: include: a sunroof glass mounted to a roof of the vehicle; a first projection device, the first projection device being installed behind a rear seat of the vehicle; a through opening in the frame of the rear seat, the through opening allowing a light path from the first projection device to pass through the through opening toward the sunroof glass; The first projection device is positioned with a projection direction facing forward and upward, so that projection light that forms a real image at the skylight glass is projected from the first projection device through the through opening to at least a portion of the skylight glass.

2. The vehicle-mounted projection system according to claim 1, characterized in that: The first projection device is installed in a rear luggage compartment of the vehicle behind the rear seats.

3. The vehicle-mounted projection system according to claim 1 or 2, characterized in that: include: Mounting bracket; A shelf having a shelf opening; The first projection device is mounted to the shelf opening by means of the mounting bracket.

4. The vehicle-mounted projection system according to claim 3, characterized in that: The mounting bracket includes a matching section matched with the opening of the shelf plate and a receiving section fixedly receiving the first projection device.

5. The vehicle-mounted projection system according to claim 4, characterized in that: The mating section includes a mating plate extending along at least a portion of an edge of the shelf opening.

6. The vehicle-mounted projection system according to claim 5, characterized in that: The matching plate is connected to the storage plate in a positionally adjustable manner along the front-rear direction.

7. The vehicle-mounted projection system according to claim 4, characterized in that: The receiving section includes a base plate and a rear plate, and the first projection device is placed on the base plate and fixed by its rear portion against the rear plate.

8. The vehicle-mounted projection system according to claim 7, characterized in that: The receiving section includes a side plate and a top plate, and the side plate and the top plate together with the base plate and the rear plate define a space for accommodating at least a corner portion of the first projection device.

9. The vehicle-mounted projection system according to claim 4, characterized in that: The mating section and the receiving section of the mounting bracket are connected to each other via an angle adjustment mechanism, and the angle adjustment mechanism defines a lateral adjustment axis, so that the first projection device can adjust the pitch angle.

10. The vehicle-mounted projection system according to claim 1 or 2, characterized in that: A shielding member is included, which can shield and release the through-opening.

11. The vehicle-mounted projection system according to claim 10, characterized in that: The rear seat includes a center armrest as the shielding member, and the center armrest can be rotated between a folded-down position and a stowed position. In the folded-down position, the center armrest extends forward and releases the through opening, and in the stowed position, the center armrest abuts against the area of ​​the frame located around the through opening and shields the through opening.

12. The vehicle-mounted projection system according to claim 3, characterized in that: A rigid cover is included that removably covers over the shelf opening.

13. The vehicle-mounted projection system according to claim 1 or 2, characterized in that: It also includes a second projection device arranged in the center armrest box of the vehicle's driving row seats, and the second projection device is positioned with the projection direction facing upward, so that the projection light that forms a real image at the sunroof glass is directly projected from the second projection device to at least a portion of the sunroof glass.

14. The vehicle-mounted projection system according to claim 13, characterized in that: The console box includes a cover plate as a shielding member of the second projection device, and the cover plate is rotatable between a closed position and an open position so as to expose at least a projection lens of the second projection device.

15. The vehicle-mounted projection system according to claim 13, characterized in that: The sunroof glass includes a front glass and a rear glass that are independent of each other, the first projection device projects onto the rear glass, and the second projection device projects onto the front glass.

16. The vehicle-mounted projection system according to claim 1 or 2, characterized in that: At least one of the skylight glasses includes an inner glass layer, a first adhesive layer, a transparent projection film, a second adhesive layer, a dimming layer, a third adhesive layer and an outer glass layer stacked in sequence.

17. The vehicle-mounted projection system according to claim 16, characterized in that: The dimming layer includes one of a PDLC, SPD, LC, and EC dimming layer.

18. A vehicle, characterized in that: The invention comprises a vehicle-mounted projection system according to any one of claims 1 to 17.

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