Display device and vehicle roof

Abstract

The invention relates to a display device for a vehicle (100), comprising: a video projector (201), which is designed to emit an image (210) in a first direction (202); an optical device (203), which is designed to deflect the emitted image (210); and a projection surface (206) which is designed to receive and display the deflected image (211), the projection surface (206) being arranged in front of the video projector (201) in the first direction (202).

Description

Technical Field

[0001] The invention relates to a display device for a vehicle. The invention also relates to a vehicle roof having a display device as described herein. Background Art

[0002] Display assemblies for vehicles are known, for example, so that entertainment programs can be displayed. For example, DE 10 2018 129 479 A1 describes a display assembly. Summary of the invention

[0003] It is desirable to provide a display device for a vehicle that can operate reliably. It is also desirable to provide a vehicle roof that has a display device that can operate reliably.

[0004] One embodiment relates to a display device for a vehicle.

[0005] The display device has a video projector. The video projector is configured to emit an image along a first direction. A video projector (also referred to as a projector) is a projector configured to output static and moving images. The video projector is particularly configured to emit light in the visible light range.

[0006] The display device has an optical device. The optical device is configured to deflect the emitted image. The optical device is particularly configured to deflect the emitted image in a direction different from a first direction.

[0007] The display device has a projection surface. The projection surface is configured to receive and display a deflected image. Thus, during operation, the image emitted by the video projector is deflected by means of an optical device and projected onto the projection surface. This projection is also referred to as a displayed image and is visible to the human eye.

[0008] The projection surface of the display device described here is arranged in front of the video projector in a first direction. That is, in the first direction, the projection surface is arranged first and then the video projector. The video projector projects an image in the first direction. Therefore, the video projector first projects an image away from the projection surface. With the help of an optical device, the image projected by the video projector is deflected so that the image is projected onto the projection surface.

[0009] The display device allows a compact design. Furthermore, it is possible to arrange the video projector and the projection surface along a common plane or a common section of the vehicle. For example, it is possible to arrange not only the video projector but also the projection surface in the roof area of ​​the vehicle. Thus, a reliable coordination between the projection surface and the video projector can be achieved, which in particular improves the quality of the projection on the projection surface. Distortions and other errors in the displayed image can be avoided.

[0010] According to at least one embodiment, the optical device has a deflection lens and a reflector. By means of the deflection lens and the reflector, it is possible to display the image emitted by the video projector on the projection surface over a large area. The deflection lens is designed to display an undistorted image even when the distance between the video projector and the projection surface is relatively small. The reflector, for example, enables the image of the video projector to be displayed on the projection surface, even though the projection surface is arranged in front of the video projector in the first direction.

[0011] According to at least one embodiment, the reflector can be moved relative to the video projector. For example, the reflector can be pivoted relative to the video projector about an axis of rotation. For example, the reflector can be moved translationally relative to the video projector. Other types of movements and combinations thereof are also possible. For example, the movement of the reflector relative to the video projector can cause the reflector to be arranged in a stowed state in which the display device is not used to display images on the projection surface. The reflector is then, for example, flipped in. This, for example, also enables protection of the reflector and the optical device and / or the video projector in the stowed state. In addition, in the stowed state, the structural space of the motor vehicle is freed up, since the reflector does not have to extend into the interior of the motor vehicle when the display device is not in operation.

[0012] During operation, the reflector can be arranged further away from the video projector. This can, for example, enable a greater distance between the video projector and the reflector. In addition, the video projector can be mounted more flexibly, since the alignment between the video projector and the projection surface can be compensated by means of the reflector.

[0013] According to at least one embodiment, the display device has a covering device. The covering device is configured to cover the video projector and / or the optical device in the storage state. For example, the covering device can move relative to the projector. For example, the covering device can move relative to the video projector together with the reflector. In the storage state, the covering device covers, for example, the optical device and the video projector in order to protect the optical device and the video projector. The covering device is movable in order to flip out the reflector and release the video projector and the optical device so that the image emitted by the video projector can be projected onto the projection surface.

[0014] Alternatively or additionally, the cover device can be used to avoid light irritation or glare for people in the vehicle. For example, the cover device is shaped so that the direct line of sight of a person sitting on a seat in the vehicle cannot directly see the light beam emitted by the video projector. Thus, irritation of the driver is avoided in particular during operation.

[0015] According to at least one embodiment, the display device has a translucent plate. The plate is configured to close a vehicle opening of the vehicle. The projection surface is configured on the plate. For example, the plate, which can also be transparently configured, can be arranged in the roof, for example, as described above. It is also possible that the plate is arranged on other parts in the vehicle, for example, as a rear tail plate, as a wind deflector and / or as a side plate. When the display device is not running, it is particularly possible to achieve perspective through the plate, as in the case of a traditional plate in the vehicle. In this regard, the plate is particularly transparent for electromagnetic radiation in the wavelength range visible to the human eye. It is also possible that the plate is slightly milky white or coated with other colors. In particular, the plate is configured so that the image projected on the projection surface is visible in the interior space of the vehicle. For example, the plate has a layer for this purpose, which is configured to reflect and / or scatter the radiation received from the projector. The layer is, for example, a coating and / or a textured portion on the outside of the plate. Alternatively or additionally, the layer is a foil laminated in the interior of the plate. In particular, the layer is designed such that it reflects light emitted by the projector in the wavelength range and thus makes it visible to people in the vehicle. The light is at least partially reflected, but not necessarily completely.

[0016] According to at least one embodiment, the video projector and the projection surface are fastened to a common carrier. The video projector and the projection surface form a common structural unit. In particular, the video projector, the optical device and the projection surface form a common structural unit and are fastened to a common carrier. For example, before the display device is installed in the vehicle as a common structural unit, the video projector and the projection surface are already installed on a common carrier. In particular, the video projector and the projection surface are installed together in the vehicle.

[0017] The carrier is, for example, a frame which is inserted into the vehicle opening. On this frame, not only the video projector but also the projection surface, i.e., a translucent plate, is fixed. If the display device is provided for a vehicle roof, the carrier is, for example, a roof frame which is inserted into the roof opening. The plate is fastened to the frame in order to close the roof opening. The video projector is fastened to the frame and is therefore also arranged in the roof region of the vehicle. The common arrangement on the common carrier enables precise coordination between the projection surface and the video projector. This enables reliable operation.

[0018] According to at least one embodiment, the projection surface and the video projector are movable relative to one another. For example, the projection surface is arranged on a plate that is movable relative to the vehicle body. In the roof region, the plate is, for example, part of an openable roof, wherein the plate can be moved in a longitudinal direction relative to the rest of the roof in order to release the roof opening. The side window can be moved, for example, along a vertical line. The plate is still guided on a common carrier, so that coordination between the video projector and the movable plate can be reliably achieved.

[0019] One embodiment relates to a vehicle roof. The vehicle roof has a display device described here according to at least one of the embodiments described here. The vehicle roof has, for example, a roof opening, into which the display device is inserted. The projection surface is, for example, formed on a plate which closes the roof opening. The display device is thus, for example, part of a so-called panoramic roof.

[0020] According to at least one embodiment, the vehicle roof has a movable cover for closing and opening the roof opening. The cover is movable and the roof opening can be selectively closed and released. The projection surface is arranged on the cover. Thus, in particular when the cover is in the closed position and the roof opening is closed, the cover is used as a projection surface to display images emitted by the video projector.

[0021] The display device enables images and / or graphics to be projected onto a projection surface and to be perceived from the outside and / or from the inside. It is thus possible to display images, graphics and / or films. The appearance of the vehicle can be changed quickly and uncomplicatedly. Individualization in the vehicle interior, such as interior lighting and ambience, can be easily achieved.

[0022] Further advantages, features and embodiments are apparent from the following examples explained in conjunction with the drawings. Identical elements, elements of the same type and having the same effect may be provided with the same reference numerals across the figures. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The accompanying drawings show:

[0024] Figure 1 A schematic diagram showing a portion of a vehicle according to an embodiment,

[0025] Figure 2 and 3 Schematic diagrams showing a display device according to an embodiment, and

[0026] Figure 4 and 5 Schematic diagrams of a display device according to an embodiment are respectively shown. DETAILED DESCRIPTION

[0027] Figure 1 A schematic diagram of a part of a vehicle 100 is shown. The vehicle 100 is, for example, a passenger car. The vehicle 100 has a roof 101 . The roof 101 has a roof opening 104 .

[0028] The vehicle has a plurality of panels 208 , such as a wind deflector 103 , a cover 104 in the roof 101 , side panels 106 and a rear tailgate (not explicitly shown). The vehicle longitudinal direction 102 extends from the rear tailgate to the wind deflector 103 .

[0029] At least one of the mentioned plates or a plurality of plates is designed as plate 208 described below.

[0030] Vehicle longitudinal direction 102 corresponds, in particular, to a main direction of travel of vehicle 100 during normal operation.

[0031] The vehicle 100 has a display device 200. The display device 200 is arranged, for example, on the vehicle roof 101. Other locations are also possible, for example in the region of the luggage compartment and / or in the side panel 106.

[0032] Positional and / or directional specifications such as "rear" or "front" used within the scope of the present disclosure refer to the vehicle longitudinal direction 102, in particular in the conventional installation state of the display device 200 in the vehicle roof 101. The vehicle longitudinal direction 102 can also be referred to as the horizontal direction or X direction. Correspondingly, positional or directional specifications such as "upper" or "lower" refer to the height direction Z. The height direction Z can also be referred to as the vertical direction. The vehicle longitudinal direction 102, the transverse direction Y and the height direction Z are in particular perpendicular to each other.

[0033] Figure 2 A display device 200 according to one exemplary embodiment is shown. Display device 200 has a video projector 201 . Video projector 201 is designed to emit graphics, images and / or videos. For this purpose, video projector 201 is connected in particular to the onboard electrical system of vehicle 100 .

[0034] The display device 200 has an optical arrangement 203. According to an embodiment, the optical arrangement 203 is partially integrated into the video projector 201.

[0035] The optical device 203 has a deflection lens 204 and a reflection mirror 205. The optical device 203 may also have further elements.

[0036] The display device 200 has a projection surface 206. The projection surface 206 is formed, for example, by means of a plate 208. That is, for example, the projection surface is constructed on the wind deflector 103, on the cover 105, on one or more of the side panels 106 and / or on the rear tail panel.

[0037] In the following, display device 200 is described in the context of an exemplary embodiment in which display device 200 is arranged on vehicle roof 101. Correspondingly, the explanations also apply to other installation locations and projection locations on other panels 208 of vehicle 100.

[0038] The plate 208 is designed as a cover 105, which closes the roof opening 104. The cover 105 is, for example, a so-called fixed glass element, which is rigidly and immovably connected to the rest of the vehicle body during operation. It is also possible to configure the cover 105 in an openable manner so that the cover 105 can be moved relative to the rest of the vehicle body along the longitudinal direction 102 of the vehicle in order to release and close the roof opening 104.

[0039] The video projector 201 and the optical device 203 are also mounted on the vehicle roof 101. In particular, the display device 200 has a carrier 215 ( Figure 1 and 4 ). The carrier 215 is designed, for example, as a frame which surrounds the roof opening 105. The carrier 215 is connected in particular to the vehicle body. The carrier 215 is used to mount the video projector 201, the optical device 203 and the plate 208. As a result, not only can the video projector 201, the optical device 203 and the carrier 215 be reliably positioned relative to one another, but also the relative positions of the elements relative to one another during operation are reliably known. In particular, it is possible to connect the video projector 201, the optical device 203 and the plate 208 to the carrier 201 in order to form a common structural unit 216 ( Figure 4 ). The structural unit 216 is provided, for example, by a supplier and is mounted on the vehicle roof 101 as a unit.

[0040] It is also possible to mount the video projector 201 and the optical device 203 on separate carriers. For example, the video projector 201 is mounted on a frame.

[0041] For example, the video projector 201 is arranged between the vehicle rear tailgate and the cover 105 along the vehicle longitudinal direction 102. Therefore, in the vehicle longitudinal direction 102, the video projector 201 is arranged in front of the cover 105. It is also possible to arrange the video projector 201 at other locations. For example, the video projector 201 is arranged between the windshield 103 and the cover 105 along the vehicle longitudinal direction 102. Therefore, in the vehicle longitudinal direction 102, the video projector 201 is arranged behind the cover 105.

[0042] Other installation positions for video projector 201 and optical device 203 are also possible, for example laterally next to cover 105 .

[0043] It is possible that a single video projector 201 is provided. It is also possible that the display device 200 has two or more video projectors 201. These video projectors project, for example, onto a common projection surface 206 or onto different projection surfaces 206, for example on different panels 208.

[0044] During operation, video projector 201 projects image 210 in first direction 202. Video projector 201 projects image 210, in particular, first away from projection surface 206. If video projector 201 is arranged in front of plate 208 in vehicle longitudinal direction 102, as shown by way of example in the figures, video projector 201 projects image 210 counter to vehicle longitudinal direction 102. Video projector 201 sends radiation 213 in first direction 202, which includes image 201.

[0045] The radiation 213 is deflected by means of the optical device 203 in such a way that the radiation 213 impinges on the projection surface 206 .

[0046] The image 210 is deflected by means of a deflection lens 204. The deflection lens 204 is designed, for example, in the manner of a reflector or comprises a reflector. The radiation 213 is deflected by the deflection lens 204 so that it is no longer emitted along the first direction 202, but extends along a second direction 214. The second direction 214 is different from the first direction 202. For example, the first direction 202 and the second direction 214 enclose an angle greater than zero and less than 90°. Other angles are also possible.

[0047] The deflected image 211 is deflected by the deflection lens 204 onto the reflector 205. The reflector is arranged behind the deflection lens 204 in the second direction 214. That is, the radiation 213 first impinges on the deflection lens 204 and then on the reflector 205. For example, the reflector 205 is designed to be aspherical. The reflector 205 can also have other shapes.

[0048] Mirror 205 in turn deflects radiation 213 so that radiation 213 impinges on projection surface 206 and displayed image 212 is shown on projection surface 206 .

[0049] Thus, radiation 213 is deflected, for example, by more than 90°, in particular by between 140° and 180°, from video projector 201 and first direction 202. It is thus possible to display image 210 emitted by projector 201 on projection surface 206, even though emitted image 210 was initially emitted in first direction 202 away from projection surface 206.

[0050] In order to display the image 212, the plate 208 has, in particular, a layer 209. The layer 209 is designed to reflect and / or scatter incident radiation 213, so that the image 212 displayed on the plate 208 is visible to the human eye.

[0051] According to an embodiment, the layer 209 has a coating and / or a structuring on the outer side of the plate 208. For example, a special plastic foil is applied, which, although acting transparently or semi-transparently, reflects the radiation 203 of the video projector 201 sufficiently to show the displayed image 212. The structuring is, for example, a roughening, a texturing or other processing or properties of the surface of the plate 208. For example, the surface of the plate 208 is processed by means of a laser in order to reliably present the radiation 213 as the displayed image 212. It is also possible that the layer 209 is constructed as a structure of the material used itself, for example, the layer 209 is formed by means of the material of the plate 208.

[0052] Alternatively or additionally, the layer 209 has a foil inside the plate 208. The plate is, for example, a glass plate which is in particular laminated from a plurality of individual glass plates. The layer 209 has a laminating foil which is designed to couple out the radiation 213 again in such a way that the displayed image 212 is visible.

[0053] In such Figure 2 In the exemplary embodiment shown, the reflector 205 is arranged on a pivotable cover 207. The reflector 205 can be pivoted relative to the video projector 201 about a pivot axis 217. Thus, in particular during operation, a sufficient distance between the reflector 205 and the video projector 201 can be achieved so that the beam path for the radiation 213 is sufficiently long.

[0054] In the stowed state, in which the display device 200 is not used to show the displayed image 212 and the video projector 201 is, for example, switched off, the reflector 205 can be pivoted toward the video projector 201. The cover device 207 is pivoted, for example, in the direction of the video projector 201 and arranged in order to protect the video projector 201, the optical device 203 and / or the reflector 205. In addition, the reflector 205 is pivoted away from the interior of the vehicle 100, which on the one hand provides more space in the interior of the vehicle 100 and on the other hand protects the reflector 205 from mechanical impacts or the like, for example when people get on and off the vehicle and / or when loading luggage.

[0055] Other tilting and / or pivoting movements for the cover 207 and / or the reflector 205 are also possible, as for example in Figure 3 As shown in .

[0056] according to Figure 3 The display device 200 of the embodiment has a translation mechanism 218. Instead of pivoting the cover device 207 between the storage state and the operating state (such as in combination with Figure 2 As described), according to Figure 3It is possible to move the cover 207 translationally in a longitudinal direction, for example in the second direction 214. Thus, in the stowed state, the cover 207 is arranged closer to the deflection lens 204 than in an operating state in which the video projector 201 is used to display an image 212 on the projection surface 206 of the panel 208.

[0057] Figure 4 and 5 A vehicle 100 having a display device 200 according to a further exemplary embodiment is shown. Figure 4 The display device 200 is shown in a stored state. Figure 5 Display device 200 is shown in an operating state.

[0058] The cover device 207 is shaped such that in the stowed state the video projector 201, the deflection lens 204 and the reflector 205 are protected and covered. Furthermore, the display device 200 is arranged in a space-saving manner in the stowed state.

[0059] In the operating state, cover device 207 is arranged such that a beam path for radiation 213 is released so that radiation 213 emitted by video projector 201 can be deflected in the direction of projection surface 206 by means of deflection lens 204 and mirror 205 and image 212 can be displayed on projection surface 206 .

[0060] Furthermore, the cover device 207 is shaped, for example, in such a way that a direct view of a person in the interior of the vehicle 100 to the reflector 205 is largely covered. In particular, for a person who is in one of the seats 107 in the provided seat position, the direct view into the optical device 203 and in particular the radiation 213 is blocked by means of the cover device 207. Undesirable glare and other light irritations that could be caused by the radiation 213 without the cover device 207 can thus be avoided.

[0061] For example, video projector 201 is a so-called ultra-short-throw projector which is designed to display a relatively large image 212 on projection surface 206 even when the distance between video projector 201 and projection surface 206 is relatively small, for example less than 50 cm, in particular less than 40 cm.

[0062] In particular, despite the small distance between video projector 201 and projection surface 206 , deflection lens 204 enables a relatively large image 212 to be displayed, which has a diagonal of, for example, more than 1 m up to 3 m.

[0063] Due to the small minimum distance between video projector 201 and projection surface 206, a small installation space requirement can be achieved for display device 200. Overall, a small installation space requirement can be achieved, in particular along height direction Z, which can also be referred to as vertical.

[0064] Distortions in displayed image 212 can be reduced by lengthening the radiation path by means of optical device 203. Optical device 203 can be used to adjust the angle and distance between video projector 201 and projection surface 206 in order to achieve a sufficiently good quality of displayed image 212.

[0065] According to the embodiment shown in the figures, the reflector 205 is arranged in a movable manner relative to the projection plane 206 and relative to the roof 201, that is, in particular, it can be pivoted and / or flipped. It is also possible to arrange the reflector 205 rigidly, for example, in a Figure 5 in the position shown.

[0066] By mounting the video projector 201, the optical device 203 and the projection surface 206 on a common carrier 215, it is possible to achieve an exact positional coordination between the projection surface 206 and the video projector 201 and the optical device 203. In particular, when the plate 208 with the projection surface 206 is mounted rigidly and immovably on the carrier 215, the relative positions and spacings between the individual elements of the display device 200 are fixedly predetermined and cannot be changed, so that a good image quality of the displayed image 212 can be achieved reliably and also over a long product service life. For example, in the operating state, in the case of a movable plate 208, the spacing between the video projector 201, the optical device 203 and the projection surface 206 is also known, because the plate 206 is arranged in a predefined position in the operating position, for example.

[0067] Cover 207 , which is made of plastic, for example, protects and covers video projector 201 .

[0068] It is also possible that, instead of folding out mirror 205 relative to video projector 201 between the stowed state and the operating state, projector 201 is pivoted and / or folded out relative to projection surface 206. Mirror 205 and video projector 201 are then not movable relative to one another.

[0069] Due to the foldability in the stowed state and the small installation space requirement, obstruction of the field of vision can be reduced or avoided.

[0070] According to other exemplary embodiments, it is possible to form the projection surface on the roof ceiling, which is composed of a fabric, for example. It is also possible to provide a roller blind that can be pulled out and to realize the projection surface 206 on the pulled out roller blind.

[0071] As described above, cover 207 protects video projector 201 and optical device 203. In addition, cover 207 is designed according to an exemplary embodiment to have a sufficiently low head impact index so that legal regulations can be complied with.

[0072] Display device 200 allows for a compact design with a relatively low installation space requirement and nevertheless allows for a relatively good image quality of image 212 projected onto projection surface 206. Overall, therefore, reliable operation of display device 200 in vehicle 100 is thus possible.

[0073] Reference numerals list

[0074] 100 Vehicles

[0075] 101 Roof

[0076] 102 Vehicle longitudinal direction

[0077] 103 Windshield

[0078] 104 Roof opening

[0079] 105 Cover

[0080] 106 Side Panel

[0081] 107 seats

[0082] 200 Display devices

[0083] 201 Video Projector

[0084] 202 First Direction

[0085] 203 Optical Devices

[0086] 204 Deflection lens

[0087] 205 Reflector

[0088] 206 projection surface

[0089] 207 Covering device

[0090] 208 Plate

[0091] 209th floor

[0092] 210 Emitted Image

[0093] 211 Deflected Image

[0094] 212 Images displayed

[0095] 213 Radiation

[0096] 214 Second Direction

[0097] 215 Carrier

[0098] 216 structural units

[0099] 217 Pivot axis

[0100] 218 Translation mechanism

[0101] X longitudinal direction

[0102] Y horizontal direction

[0103] Z height direction

Claims

1. A display device for a vehicle (100), the display device comprising: a video projector (201) configured to project an image (210) along a first direction (202), - an optical device (203) designed to deflect the emitted image (210), a projection surface (206) which is designed to receive and display the deflected image (211), wherein: The projection surface (206) is arranged in front of the video projector (201) in the first direction (202).

2. The display device according to claim 1, wherein: The optical device (203) has a deflection lens (204) and a reflection mirror (205).

3. The display device according to claim 2, wherein: The reflector (205) is movable relative to the video projector (201).

4. The display device according to any one of the preceding claims, comprising a covering device (207), which is configured to cover the video projector (201) and / or the optical device (203) in a stowed state.

5. The display device according to any one of the preceding claims, comprising a translucent plate (208) which is configured to close a vehicle opening (104) of the vehicle (100), wherein: The projection surface (206) is configured on the plate (208).

6. The display device according to claim 5, wherein: The plate (208) has a layer (209) which is designed to reflect and / or scatter radiation (213) received from the projector (201).

7. A display device according to any one of the preceding claims, wherein: The video projector (201) and the projection surface (206) are fastened to a common carrier (215) and form a common structural unit (216).

8. A display device according to any one of the preceding claims, wherein: The projection surface (206) and the video projector (201) are movable relative to each other.

9. A vehicle roof, comprising a display device (200) according to any one of the preceding claims.

10. The vehicle roof according to claim 9, comprising a roof opening (104) and a movable cover (105) for closing and opening the roof opening (104), wherein: The projection surface (206) is formed on the cover (105).

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