Projection device for a vehicle interior

Abstract

1. Projection device for a vehicle interior. 2.1 Such a projection device with a projection roller blind system comprising a flexible projection surface which is held in a support structure in a way that can be rolled up and unwound is known. 2.2 According to the invention, the projection plane is flanked on opposite sides by a shading system, which each includes a shading roller blind and is designed to shade a vehicle interior area laterally next to the projection plane. 2.3 Use for passenger cars

Description

[0001] The invention relates to a projection device for a vehicle interior, with a projection roller blind system comprising a flexible projection screen which - in its ready-to-use assembled state - is held in a support structure in a way that can be wound up and unwound in the transverse direction of the vehicle between a wound-up rest position and a projection position that is essentially unwound downwards in the vertical direction of the vehicle.

[0002] Such a projection device for the interior of a motor vehicle is known from WO 2023 / 082 379 A1. The projection device is designed to enable the use of multimedia functions in a passenger compartment. A projection roller blind system is mounted in the headliner area of ​​the passenger compartment. This system has a flexible projection surface that can be extended downwards from a resting position in the headliner. In the extended projection position, multimedia content can be projected onto the projection surface so that vehicle occupants can perceive this content.

[0003] From DE 103 16 785 A1 a roller blind device is known with a central roller blind track and two lateral roller blind tracks to achieve additional shading in the transverse direction of the vehicle.

[0004] The object of the invention is to create a projection device of the type mentioned above which enables improved use of multimedia functions in the vehicle interior.

[0005] This problem is solved by the features of claim 1. The lateral shading systems prevent lateral light ingress into the vehicle interior during the use of multimedia content on the projection surface in its projection position, thus ensuring improved visibility of the multimedia content on the projection surface. For this purpose, the shading systems each have at least one shading element, preferably a shading panel, which is made of a material that is at least largely opaque. The invention enables improved entertainment functions in the vehicle interior. In addition, a secure privacy atmosphere is created, particularly when the projection device is located in the rear compartment of a motor vehicle. The solution according to the invention is particularly advantageous for the interiors of passenger cars, and especially for minivans.The projection device according to the invention can also be used in the same way for other motor vehicles on land, preferably rail vehicles, on water, or in the air. The shading systems serve, firstly, to prevent lateral light ingress next to the projection surface. Secondly, they serve to create an opaque separation of the corresponding vehicle interior sections laterally next to the projection surface, in order to achieve a private atmosphere.

[0006] According to the invention, each shading system – in its fully assembled state – is mounted so as to be movable in the transverse direction of the vehicle between a functional position and a non-functional position. In the non-functional position, each shading system is advantageously concealed, at least to a large extent, behind the projection surface. This makes it possible to house the shading system, and thus also the projection device, compactly in the non-functional position.

[0007] In this embodiment of the invention, the projection screen is held on a winding shaft within the support structure so that it can be wound and unwound. At its end face furthest from the winding shaft, the projection screen is connected to a dimensionally stable extension profile, which serves as a guide rail profile for moving the shading systems laterally across the vehicle. The extension profile has a dual function: firstly, its own weight keeps the projection screen taut in the projection position; and secondly, the extension profile forms a guide rail profile along which the two shading systems can be moved linearly laterally across the vehicle. The guide rail profile can have two spaced-apart guide rail sections on opposite sides of the extension profile.The shading systems are preferably mounted on sliding carriages that can be moved along corresponding sections of the guide rail profile. According to the invention, the extension profile is aligned in the transverse direction of the vehicle in its ready-to-use assembled state, and the projection path extends in its projection position in a plane spanned by the transverse and vertical directions of the vehicle.

[0008] In a further embodiment of the invention, each shading system comprises a shading strip that is held on a roller tube so that it can be wound up and unwound, and each shading strip is provided with a dimensionally stable support profile at its end face opposite the roller tube. The support profile is also referred to as a support strip. The shading strips of the two shading systems are preferably displaceable parallel to the projection screen. Accordingly, the roller tubes of the shading systems are also preferably rotatably mounted parallel to the winding shaft of the projection screen. Advantageously, the shading strips are positioned offset from the projection screen in the longitudinal direction of the vehicle so that the shading strips can be concealed behind the projection screen when not in use.

[0009] In a further embodiment of the invention, the length of each shading strip corresponds at least largely to the length of the projection strip. This advantageously results in at least largely identical extension paths for the two shading strips and the projection strip, so that the shading systems can provide lateral shading over the entire length of the projection strip.

[0010] In a further embodiment of the invention, a lifting mechanism is provided for repositioning the extension profile between the rest position and the projection position of the projection track, and a transverse mechanism is provided for laterally repositioning the shading systems. The lifting mechanism causes the projection track, and thus the extension profile, to be repositioned vertically in the vehicle direction. The transverse mechanism is designed to reposition the shading systems laterally in the vehicle direction relative to the stationary projection track.

[0011] In a further embodiment of the invention, the lifting mechanism and the transverse mechanism are integrated into a common control kinematic system, which is designed as a double-scissor mechanism. With this embodiment, the lifting function for the projection track, and thus the extension profile, and the transverse function for the lateral displacement of the shading tracks are combined in the common control kinematic system. The control kinematic system is designed as a double-scissor mechanism, resulting in a purely mechanical control kinematic system. The double-scissor mechanism has at least two scissor joints that fold together or spread apart depending on the respective functional position of the projection track and the shading tracks.

[0012] In a further embodiment of the invention, the support profile of each shading strip is mounted so as to be linearly movable parallel to the winding shaft of the projection screen. This also allows the respective shading strip to be extended parallel to the mounting plane of the projection screen.

[0013] In a further embodiment of the invention, the roller tube of each shading panel is rotatably mounted in a bearing that is linearly movable along the guide rail profile of the projection panel's extension profile. This allows the respective roller tube, together with its shading panel, to be moved transversely in the vehicle direction between the non-use position and a functional position in which at least partial shading of the lateral section of the vehicle interior next to the projection panel is possible. The bearing forms a bearing slide for the shading system.

[0014] In a further embodiment of the invention, a drive unit is provided for actuating the control kinematics, in particular the double scissor kinematics. This enables automatic control of the projection device. The drive unit preferably comprises at least one electric motor or at least one hydraulic or pneumatic actuator.

[0015] In a further embodiment of the invention, the drive unit features a double spindle drive mounted parallel to the winding shaft on the support structure, allowing rotation in the transverse direction of the vehicle. This drive is designed for the oppositely synchronous lateral displacement of the two shading systems. Thus, the two shading systems can be moved synchronously in opposite directions between the non-use position, in which they are at least largely concealed behind the projection surface, and the shading position, in which they are moved outwards in the transverse direction of the vehicle to flank the projection surface. The double spindle drive also couples the double scissor kinematics.

[0016] In a further embodiment of the invention, one scissor joint is fixedly attached to the support structure and the extension profile, and the other scissor joint is attached to the support profile and the bearing of each shading system. As soon as the scissor joints are folded together or extended in the lifting direction, i.e., in the upward direction of the vehicle, the respective scissor joint associated with the shading system inevitably moves inwards or outwards in the transverse direction of the vehicle, thereby moving the support profile and the bearing of the respective shading system along with it in the transverse direction of the vehicle.

[0017] In a further embodiment of the invention, the drive unit comprises a single electric motor designed to drive the double spindle drive. This is a space-saving, cost-effective, and quiet design. The double spindle drive preferably has two coaxial but counter-rotating threaded spindles that are rotationally fixed relative to each other. Driving the double spindle drive therefore inevitably results in counter-rotating movements of the two threaded spindles, so that each spindle nut, which is coupled to the respective scissor joint, is displaced in the transverse direction of the vehicle. The threaded spindles are otherwise identical to each other, so that the synchronous and counter-rotating transverse displacement paths of both spindle nuts are identical.

[0018] The support profile of each shading panel can be positioned at the level of the support structure for the winding shaft of the projection panel or at the level of the extension profile of the projection panel. Correspondingly, the bearing for the roller tube of each shading panel can alternatively be mounted transversely at the level of the extension profile or at the level of the support structure for the winding shaft of the projection panel.

[0019] In a further embodiment of the invention, the shading strips with their outer edge contours are shaped such that, in the functional position of the shading strips, the edge contours are at least largely flush with the side boundaries of the vehicle interior. This largely prevents lateral light ingress next to the projection strip.

[0020] Further advantages and features of the invention will become apparent from the claims. A preferred embodiment of the invention is described below and illustrated with reference to the drawings. Fig. Figure 1 schematically shows in perspective a partial area of ​​a vehicle interior of a motor vehicle with an embodiment of a projection device according to the invention. Fig. 2 in enlarged perspective view the projection device according to Fig. 1 in a first functional position, Fig. 3 the projection device to Fig. 2 in a second functional position, Fig. 4 the projection device after Fig. 3 omitting a top-side support structure, Fig. 5 the representation according Fig. 4, however in a position of the projection device according to Fig. 2, Fig. 6 the projection device after Fig. 5 omitting a central projection path and lateral shading paths, Fig. 7 the representation according to Fig. 6 in a different functional position, Fig. 8 the representation according to the Fig. 6 and Fig. 7 in a different functional position, Fig. Figure 9 shows an enlarged section of an upper part of the projection device according to Fig. 7 and Fig. 10 in enlarged perspective view a section of a lower part of the projection device according to Fig. 7.

[0021] A passenger car exhibits a [unclear] in Fig. Figure 1 shows the vehicle interior F, which is only indicated and is bounded upwards in the vehicle's vertical direction Z by a headliner D. The headliner D is attached to a roof support structure of the passenger car (not shown). The vehicle interior F contains a [description of which is missing in the original text]. Fig. The projection device 1, described in more detail in sections 1 to 10, is arranged. The projection device 1 comprises a flexible projection surface 2, in particular a screen, which is held on a winding shaft 8 so as to be wound and unwound. The winding shaft 8 is oriented transversely to the vehicle and rotatably mounted in a support structure T in the vehicle's vertical direction Z above the headliner D. The flexible projection surface 2 is connected at its lower end region, located away from the winding shaft 8 and viewed in the vehicle's vertical direction, to a dimensionally stable extension profile 3, which is oriented parallel to the winding shaft 8 and to the cassette-shaped support structure T in the vehicle's transverse direction Y. The projection roller blind system formed by the projection surface 2, the winding shaft 8, and the extension profile 3 is flanked on opposite sides in the vehicle's transverse direction Y by a shading system on each side.Each shading system comprises a flexible shading panel 4 made of an opaque shading material. The two shading panels are identical with respect to their edge contours, but are designed as mirror images of each other. The length of each shading panel 4, viewed in the vehicle's vertical direction Z, corresponds to the extension length of the projection panel 2, also viewed in the vehicle's vertical direction Z. The lateral outer contours of the opposing shading panels 4 are aligned with the side boundaries of the vehicle interior F such that these lateral edge contours are at least largely flush with the side boundaries of the vehicle interior F. Each shading panel 4 is mounted on a roller tube 7, which is rotatably mounted parallel to the winding shaft 8 in a bearing 5. The bearing 5 is designed as a rail-shaped bearing profile with corresponding bearing blocks that support the roller tube at its end face.Each bearing 5 is linearly displaceable along the extension profile 3, and thus slidably displaceable. For this purpose, opposing lateral areas of the extension profile 3 are designed as guide rail profiles 6. The respective bearing 5 has a slide profile complementary to the guide rail profile 6, so that the respective bearing 5 is displaceably displaceable along the guide rail profile 6 in the transverse direction Y of the vehicle, in the manner of a slide.

[0022] Each shading strip 4 has a rigid support profile 18 (not further specified) at its end face adjacent to the roller tube. This support profile is coupled to a threaded nut 12 of a double spindle drive, which can be displaced in the transverse direction of the vehicle. The support profile 18 is designed as a strip that extends across the width of the upper end face of the respective shading strip 4. In the illustrated embodiment, the two shading strips 4 of the two shading systems are positioned parallel to the projection strip 2 in the longitudinal direction X of the vehicle, and, in this case, behind the projection strip 2 (relative to a normal driving direction of the vehicle). Both the projection strip 2 and the two shading strips 4 are moved together by means of a drive unit A.The drive unit A has both a lifting function for the extension profile 3 and thus also for the projection track 2 and for the shading tracks 4, as well as a lateral displacement function for the bearings 5 ​​of the two shading tracks 4. In this process, the two shading tracks 4 are displaced synchronously and in opposite directions to each other in the transverse direction Y of the vehicle.

[0023] The drive unit A has a single, centrally positioned electric motor 9 that drives a double spindle 10. The double spindle 10 extends transversely across the vehicle and, like the electric motor 9, is fixedly mounted to the support structure T in the headliner area in a manner not shown in detail. For this purpose, the double spindle 10 is rotatably mounted at its opposite ends in two fixed bearing receptacles 14 on the support structure T. The double spindle 10 has two counter-rotating threaded spindles 11, which are otherwise identical. The two threaded spindles 11 are integral components of the double spindle 10. A threaded nut 12 runs on each threaded spindle 11 and is coupled to the respective support strip, i.e., the support profile 18, of the respective shading panel 4.

[0024] How the Fig. The extension profile 3 and the bearings 5, which can be removed from sections 6 to 10, are connected to the upper support structure T by means of a double scissor mechanism. The double scissor mechanism causes both the lifting movement of the extension profile 3 and the lateral displacement movements of the bearings 5. For this purpose, the double scissor mechanism has a scissor joint 15, 16 on each side, which is pivotally coupled to the support profile 18 by means of an upper scissor arm 15 and to the bearing 5 by means of a lower scissor arm 16. In addition, a further scissor joint 13, 17 is provided on each side, which is fixedly connected to the support structure T on the upper side and fixedly connected to the extension profile 3 on the lower side. For this purpose, an upper scissor arm 13 is provided, which is pivotally held on the support structure T. On the underside, a lower scissor arm 17 is provided, which is articulated to the extension profile 3.

[0025] The function of the double-scissor kinematics is explained by the Fig. Figures 6 to 10 are clearly visible. The scissor joints 13, 15 to 17 spread apart or contract. This results in the desired lifting function, which, due to the coupling of the movable scissor joints 15, 16 with the slide-shaped bearings 5, also results in the desired lateral displacement of the slide-shaped bearings 5 ​​for the shading panels 4.

Claims

[1] Projection device (1) for a vehicle interior (F), comprising a projection roller blind system comprising a flexible projection screen (2) which, in its ready-to-use assembled state, is held in a support structure (T) in a manner that can be wound up and unwound in the transverse direction of the vehicle between a wound-up rest position and a projection position that is essentially unwound downwards in the vertical direction of the vehicle, characterized by , that on opposite sides the projection plane (2) is flanked by a shading system, each comprising a shading roller blind and designed to shade a vehicle interior area in the transverse direction of the vehicle laterally next to the projection plane, and that each shading system - in the ready-to-use assembled state - is mounted to be movable in the transverse direction of the vehicle between a functional position and a non-use position. [2] Projection device (1) according to claim 1, characterized by, that the projection track (2) is held on a winding shaft (8) in the support structure (T) so that it can be wound up and unwound, and that the projection track (2) is connected at its end face away from the winding shaft (8) to a dimensionally stable extension profile (3) which is designed as a guide rail profile (6) for the movement of the shading systems in the transverse direction of the vehicle. [3] Projection device (1) according to claim 1 or 2, characterized by , that each shading system has a shading strip (4) which is held on a roller tube (7) so as to be wound up and unwound, and that each shading strip (4) is provided with a dimensionally stable support profile (18) at its end face opposite the roller tube (7). [4] Projection device (1) according to claim 3, characterized by , that the length of each shading path (4) corresponds at least largely to a length of the projection path (2). [5] Projection device (1) according to any one of claims 2 to 4, characterized by , that a lifting function device is provided for relocating the extension profile (3) between the rest position and the projection position of the projection track (2), and that a transverse function device is provided for transverse relocation of the shading systems. [6] Projection device (1) according to claim 5, characterized by , that the lifting function device and the transverse function device are integrated in a common control kinematics which is designed as a double scissor kinematics. [7] Projection device (1) according to any one of claims 3 to 6, characterized by , that the support profile (18) of each shading track (4) is mounted to be linearly movable parallel to the winding shaft (8) of the projection track (2). [8] Projection device (1) according to any one of claims 3 to 7, characterized by, that the roller tube (7) of each shading strip (4) is rotatably mounted in a bearing (5) which is linearly movable on the guide rail profile (6) of the extension profile (3) of the projection strip (2). [9] Projection device (1) according to any one of claims 6 to 8, characterized by , that a drive unit (A) is provided for actuating the double scissor kinematics. [10] Projection device (1) according to claim 9, characterized by , that the drive unit (A) has a double spindle drive mounted parallel to the winding shaft (8) on the support structure (T) in a rotatable manner in the transverse direction of the vehicle, which is designed for the oppositely synchronous transverse displacement of the two shading systems. [11] Projection device (1) according to any one of claims 6 to 10, characterized by, that one scissor joint is fixedly attached to the support structure (T) and to the extension profile (3) and the other scissor joint is attached to the support profile (18) and to the bearing (5) of each shading system. [12] Projection device (1) according to any one of claims 9 to 11, characterized by , that the drive unit (A) has a single electric motor (9) designed to drive the double spindle drive. [13] Projection device (1) according to any one of the preceding claims, characterized by , that the shading strips (4) with their outer edge contours are shaped in such a way that the edge contours in the functional position of the shading strips (4) are at least largely flush with the side boundaries of the vehicle interior (F).

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