Method for visualizing a current or anticipated traffic situation concerning a preceding vehicle for a following vehicle

Abstract

Method for visualizing a current or anticipated traffic situation (H, T) concerning a preceding motor vehicle (V) for a following vehicle (F), wherein at least one detection and evaluation device (1, 2, 3) of the preceding motor vehicle (V) detects and evaluates the current or anticipated traffic situation (H, T) applicable to it, and at least one display device (4, 5, 10, 11) of the preceding motor vehicle (V) visible to the following vehicle (F) is controlled or controllable such that the current or anticipated traffic situation (H, T) applicable to the preceding motor vehicle (V) is visualized (P) or can be visualized on the at least one display device (4, 5, 10, 11), characterized in that the visualization on the display device (4, 5, 10, 11) is formed by at least one perspective representation with a geometrically generated vanishing point (P).wherein the vanishing point (P) is changed or can be changed in its appearance on the display device (4,5,10,11) depending on the detected, current or expected traffic situation (H,T).

Description

[0001] The invention relates to a method for visualizing a current or anticipated traffic situation concerning a preceding motor vehicle for a following vehicle.

[0002] The driver of a vehicle following a vehicle in front (the following vehicle) is frequently confronted with a situation where, due to obstructed visibility caused by the vehicle in front, they are unable to correctly assess the current or anticipated traffic situation for the vehicle ahead. This is especially true for vehicles whose design further obstructs the view. Often, this results in the reasons for the driving maneuvers of the vehicle in front being unclear, and consequently, the maneuvers themselves coming as a surprise to the following vehicle.

[0003] German patent application DE 10 2011 112 577 A1 discloses a method for an assistance system that serves to carry out an autonomous or semi-autonomous driving maneuver of a vehicle. The method is intended in particular for accompanying a parking or unparking maneuver.

[0004] Specifically, a camera system captures image data from the vehicle's surroundings and processes it to execute the driving maneuver. Additionally, a light signaling system indicates the direction in which the vehicle is moving during the maneuver.

[0005] The light signaling device consists of an LED light bar with several LEDs arranged side by side. The LEDs are controlled to indicate the direction of movement by creating a running light pattern that moves in the direction the vehicle is maneuvering.

[0006] Furthermore, it is known from the general state of the art to arrange a third brake light in the central rear area, in particular in the upper area of ​​the rear window of motor vehicles, in order to increase the signaling effect of vehicles driving ahead.

[0007] From DE 200 20 245 U1 and DE 10 2006 016 807 A1, a method for visualizing a current or expected traffic situation concerning a preceding motor vehicle for a following vehicle is known.

[0008] However, the aforementioned state of the art is not really suitable for solving the problem initially identified.

[0009] The present invention is therefore based on the objective of providing a method that makes it easier for a following vehicle to better assess the current or anticipated traffic situation concerning a preceding motor vehicle.

[0010] This problem is solved using the features of claim 1.

[0011] The invention also aims to provide a motor vehicle with which the method can be carried out.

[0012] This problem is solved by the features of claim 8.

[0013] Advantageous further developments of the invention can be found in the respective dependent claims.

[0014] According to the invention, a method is proposed in which a current or anticipated traffic situation concerning a preceding motor vehicle is visualized or can be visualized for a following vehicle. In this method, at least one detection and evaluation device of the preceding motor vehicle detects and evaluates the current or anticipated traffic situation applicable to that vehicle. Furthermore, at least one display device of the preceding motor vehicle, visible to the following vehicle, is provided, which is controlled or controllable such that the current or anticipated traffic situation applicable to the preceding motor vehicle is visualized or can be visualized on the at least one display device.

[0015] Due to such a visualization on a display device visible to the following vehicle, it is made much easier for the driver of the following vehicle to correctly assess the current or expected traffic situation concerning the vehicle ahead and thus not be surprised by a resulting driving maneuver of the vehicle ahead.

[0016] Driving maneuvers include, in particular, cornering, evasive maneuvers, and sudden braking. Such maneuvers can put a following vehicle in a difficult position, especially if it is driving too close or attempts to overtake.

[0017] A current or anticipated traffic situation (especially in the near future) includes, in particular, situations caused by the given road conditions, road layouts and / or any obstacles that may occur.

[0018] For example, a curve represents a traffic situation for a motor vehicle in which the driver must perform an active driving maneuver by appropriately coordinating the operation of the steering wheel, brake and accelerator pedal.

[0019] An approaching, stationary or even moving obstacle, for example, represents a traffic situation in which the driver of a motor vehicle must at least brake or, under certain circumstances, swerve in time.

[0020] A camera system is one suitable device for detecting traffic situations. Alternatively or additionally, other sensors can be used. These sensors could be, for example, ultrasonic, radar, lidar, and / or laser sensors. This list is merely an example.

[0021] In the broadest sense, a navigation system can also be described as a data acquisition system for delivering relevant data, through which a movement trajectory can be derived from the planned route of the motor vehicle.

[0022] The data collected can, for example, reveal whether the vehicle is on a curve or approaching one. It can also indicate whether the vehicle is approaching an obstacle.

[0023] After evaluating the data, a display device can be controlled accordingly, depending on the evaluated data, so that the current or expected traffic situation can be visualized on the display device.

[0024] The display device can, for example, be part of a taillight of the vehicle ahead, or the taillight itself. A design as a freely programmable display is conceivable.

[0025] It is also possible to design the display device in the form of matrix-like arranged LEDs, which can be individually and flexibly controlled.

[0026] The visualization of the current or future traffic situation also includes a current or anticipated driving situation, i.e., a driving maneuver to be carried out due to the traffic situation, such as a braking, steering or evasive maneuver.

[0027] Tests have shown that the visualization of a current and expected traffic situation is particularly perceptible and understandable for a following vehicle when the visualization on the display device is formed by at least one perspective representation with a geometrically generated vanishing point, according to the invention.

[0028] Such a vanishing point can be created, for example, by lines converging in perspective. The lines themselves can have different shapes and structures. They can be straight or curved, for instance. They can be solid or broken lines.

[0029] It is also conceivable to create a vanishing point using geometric figures other than lines.

[0030] According to the invention, the appearance of the vanishing point on the display device changes, or can be changed, depending on the detected, current, or anticipated traffic situation. The appearance of the vanishing point refers in particular to its position, size, and / or shape on the display device.

[0031] In this way, changes in movement and / or direction to be carried out by the motor vehicle (in the near future) can be visualized particularly well for a following vehicle.

[0032] For example, a change in the direction of the motor vehicle caused by a curve can be represented by an essentially horizontal change in the position of the vanishing point on the display device.

[0033] For example, the approach of a motor vehicle to an impending obstacle can be visualized by enlarging the vanishing point on the display device.

[0034] Alternatively or additionally, it is also conceivable to make the vanishing point oscillate at a certain frequency or to increase the intensity of its graphical representation (especially brightness) as one gets closer to the obstacle.

[0035] A suitable embodiment of the invention therefore provides that the vanishing point is changed, at least in its horizontal position on the display device, depending on the movement trajectory of the vehicle ahead.

[0036] The trajectory of a motor vehicle is primarily determined by the given road layout or the planned route.

[0037] Thus, it is advantageous to position the vanishing point in a left area of ​​the display device for a left turn and in a right area of ​​the display device for a right turn.

[0038] To better visualize the approach of the vehicle ahead to an obstacle, a further embodiment of the invention allows the vanishing point on the display device to be enlarged as the vehicle ahead approaches the obstacle. This enlargement preferably occurs continuously as the vehicle ahead approaches the obstacle. Conversely, a preferably continuous reduction of the vanishing point can be provided if the distance between the vehicle ahead and the obstacle should increase again. It is irrelevant whether the obstacle itself is moving (e.g., is itself a moving vehicle) or stationary.

[0039] It can also be useful if the vanishing point on the display device is at least enlarged in the event of a likely braking maneuver by the vehicle in front.

[0040] For this purpose, it may be useful if, for example, a detection device in the interior of the vehicle detects the approach of the driver's foot to the brake pedal (increased readiness to brake) and thus an increased probability of a braking process in the near future can be assumed.

[0041] According to a particularly advantageous embodiment of the invention, the vanishing point is adjusted with a time lead time to an anticipated traffic situation.

[0042] For example, it is conceivable that the vehicle ahead is currently traveling straight ahead, but based on data from a navigation system and the selected route, a curve is expected in the near future. In this case, it is therefore advisable to shift the vanishing point laterally to the left or right on the display device, according to the expected trajectory of the vehicle, even before the curve begins.

[0043] This way, the following vehicle is informed in good time that the vehicle in front will soon be going around a bend.

[0044] The method according to the invention can therefore not only make current or near future motion trajectories of a preceding motor vehicle visible to a following vehicle, but can also display the vehicle position of the preceding motor vehicle in such a way as to provide information about how critically the driver of the preceding vehicle assesses a traffic situation in front of him (increased readiness to brake or not).

[0045] The method according to the invention thus enables "information" for the following vehicle even without complex vehicle-to-vehicle communication, in which both the preceding and the following vehicle must have appropriately suitable technical equipment.

[0046] As already mentioned, the invention also relates to a motor vehicle for carrying out the method according to the invention.

[0047] Such a motor vehicle has at least one device for detecting its surroundings and at least one device for evaluating the data obtained. Furthermore, it has at least one controllable display device on which a current or anticipated traffic situation applicable to the motor vehicle can be visualized for a following vehicle.

[0048] Such a motor vehicle represents, so to speak, a "transparent vehicle" for a following vehicle, allowing the following vehicle to better assess the traffic situation applicable to the vehicle in front and thus its expected driving maneuvers.

[0049] Following further training, the display device can be controlled in such a way that a perspective view with a geometric vanishing point can be generated on it. The appearance of this vanishing point, particularly its position, size, and / or shape, can be changed on the display device depending on the detected traffic situation. This makes the visualization extremely quick for a following vehicle to grasp.

[0050] The display device is preferably formed by a lighting device of the motor vehicle or a part thereof, so that the effort required for separate devices can be kept to a minimum.

[0051] It may also be advantageous if the display device is formed or can be formed at least in part from an area of ​​the rear window of the vehicle in front.

[0052] This allows for very good visibility for a following vehicle.

[0053] When the present application refers to a vanishing point, it means, in the broadest sense, a representation in which several graphic elements converge onto a common area. This area can also be considered a converging area. If the geometric elements are brought close enough together within this area, the area can also have a point-like appearance.

[0054] The graphic elements can take on a variety of forms. A linear design of the graphic elements is particularly preferred, and these can be straight, curved, interrupted, or a combination of these properties.

[0055] It is also conceivable to develop the graphic elements as simple figures, for example as rectangles, circles or squares.

[0056] Preferred embodiments of the invention are illustrated in the drawings and are explained in more detail in the following description. Reference numerals refer to identical, comparable, or functionally equivalent components, achieving corresponding or comparable properties and advantages, even if a repeated description is omitted.

[0057] They show, each schematically Fig. 1. A representation of a motor vehicle operating according to the inventive method in a typical traffic situation. Fig. 2. The representation of different vanishing points to visualize a traffic situation, Fig. 3. The representation of a traffic situation for a motor vehicle operating according to the inventive method (planned curve maneuver), Fig. 4 a representation of a motor vehicle in which the planned curve is visualized for a following vehicle according to the invention, Fig. 5. The representation of another traffic situation for the motor vehicle operating according to the inventive method (approaching an obstacle). Fig. 6. A description of how the traffic situation changed after Fig. 5 on the motor vehicle for a following vehicle according to the invention, Fig. 7. The illustration of yet another traffic situation for the motor vehicle operating according to the inventive method (approaching an obstacle and switching to an increased braking readiness). Fig. 8 a visualization of the traffic situation according to the invention Fig. 7 for a following vehicle and Fig. 9 Another embodiment of a motor vehicle which operates according to the method according to the invention.

[0058] First, the focus will be on Fig. 1 referenced.

[0059] From the Fig. Figure 1 shows a motor vehicle V traveling ahead of a following motor vehicle F (following vehicle). The motor vehicle V is traveling on a roadway (not shown in detail), which defines a trajectory T (trajectory) of the motor vehicle V.

[0060] In front of the motor vehicle V, an obstacle H in the form of another moving motor vehicle is depicted.

[0061] The motor vehicle V is capable of operating according to the method of the invention and is equipped with a detection device 1, at least for the area in front of it. The detection device 1 can be, for example, a camera, a radar sensor, a lidar sensor, an ultrasonic sensor, or an infrared sensor. A combination of these components is also conceivable.

[0062] The recording device 1 has a recording area E.

[0063] Thus, the detection device 1 can detect both the movement trajectory T of the motor vehicle V and the obstacle H.

[0064] The detection device 1 is in signal communication with an evaluation and processing unit 2. The evaluation and processing unit 2 is also in signal communication with a navigation unit 3.

[0065] Using the map data available to the navigation unit 3 in conjunction with a destination entered by the driver of the motor vehicle V, data on the expected movement trajectory T of the motor vehicle V can be supplied to the evaluation and calculation unit in addition to or as an alternative to the data from the recording device 1.

[0066] The evaluation and computing unit 2 is in turn connected via signal technology to display devices 4, which are each part of the rear lights 5 of the motor vehicle V.

[0067] The traffic situation applicable or expected for the motor vehicle V is therefore recorded or captured by the detection device 1 and / or the navigation unit 3.

[0068] After evaluation of the recorded data by the evaluation and computing unit 2, the data or the corresponding traffic situation is visualized on the display devices 4 of the rear lights in a manner to be described in more detail.

[0069] The rear lights 5 and thus the display devices 4 are clearly visible to the following vehicle F, so that it is well informed about the traffic situation applicable to the preceding vehicle V by means of the visualization.

[0070] Based on Fig. Section 2 now explains in more detail how the traffic situation applicable or expected for the vehicle V ahead can be visualized for the following vehicle F.

[0071] The visualization is achieved through a perspective representation with a geometrically generated vanishing point P.

[0072] A freely programmable display 40, which is part of the display device 4 and with which geometric elements G can be generated and moved with maximum flexibility, is used for the display.

[0073] Intermediate areas 41 are formed between the generated geometric elements G.

[0074] Based on the Fig. 2 it is evident that the vanishing point P is geometrically generated by the fact that the geometric elements G appear to converge on a single point.

[0075] As can be seen, the design of the geometric elements G and how close they are brought to each other are irrelevant for the generation of the vanishing point P.

[0076] In the illustrations, a vanishing point P, which is visually perceptible to a viewer, is highlighted by a dashed line for clarity only. This can, of course, be omitted in the actual visualization by the vehicle V.

[0077] A vanishing point P can therefore be formed, for example, by geometric elements G in the form of straight or curved lines (compare Fig. 2a and Fig. 2b). The lines can of course also be broken, a mixture of these variants is also conceivable.

[0078] However, the geometric elements G can also be formed by simple geometric figures, for example in the form of rectangles or squares (compare Fig. 2c).

[0079] From the Fig. 2d and Fig. 2e it is evident that the geometric elements G can be almost completely combined to form a vanishing point P ( Fig. 2d), but can also encompass a relatively wide area, which can also be considered a vanishing point (cf. Fig. 2e).

[0080] The shape of the vanishing point P (round, square, oval, etc.) is also irrelevant for the criteria of whether a vanishing point exists within the meaning of the invention or not.

[0081] In Fig. Figure 3 now depicts a traffic situation for the motor vehicle V, in which it has a trajectory T that transitions from driving straight ahead at time t0 to driving around a curve Ta or Tb at time t1. The time interval from t0 to t1 is denoted by Δt.

[0082] In Fig. Figure 4 shows how this current or expected traffic situation for the following vehicle F can be visualized for the motor vehicle V.

[0083] Thus, vanishing points P are created on the rear lights 5 of the motor vehicle V by geometric elements G.

[0084] The vanishing points P are determined from an imaginary, central position M on a suitable display device of the rear lights 5 in the case of an anticipated left turn (Ta, compare Fig. 3) to the left L ( Fig. 4a) and in the case of an expected right turn (Tb, compare Fig. 3) to the right R ( Fig. 4b) postponed.

[0085] It is important to mention that the vanishing points P are still in the middle position M when the vehicle V is traveling straight ahead before time t0, but already in the time interval Δt before the start of the actual curve (i.e., already at time t0) they are in the position shown in the Fig. 4a or the Fig. The off-center position L or R shown in 4b can be brought.

[0086] This allows the following vehicle F to visualize, even before the preceding vehicle begins to turn, that such a turn is to be expected in the near future.

[0087] Therefore, at this point it no longer makes sense for the following vehicle F to initiate an overtaking maneuver, for example.

[0088] In relation to Fig. 2. It should also be mentioned that the formation of the geometric elements G can be achieved, firstly, by illuminating (illuminating) these areas on the display 40, while the intermediate areas 41 are not illuminated, i.e., left dark. Likewise, the formation of the geometric elements G through an inverse representation is conceivable, in which the intermediate areas 41 are illuminated, but the geometric elements G are left dark.

[0089] In Fig. Figure 5 now depicts a traffic situation for the motor vehicle V, in which it is approaching an obstacle located in front of it.

[0090] In the present case, the obstacle is formed by a motor vehicle traveling ahead, which has a slower speed than the motor vehicle V itself.

[0091] Ha represents the obstacle at a greater distance from the motor vehicle V, while Hb (shown as a dashed line) represents the obstacle at a shorter distance from the motor vehicle V.

[0092] Out of Fig. Figure 6 shows how this traffic situation applicable to motor vehicle V can be visualized for the following vehicle F.

[0093] It can be seen that for visualization purposes, a vanishing point P is formed on the rear lights 5 of the motor vehicle V, which is intended to represent the approaching obstacle Ha or Hb.

[0094] The vanishing point P is determined by the initially greater distance of the obstacle (Ha, compare Fig. 5 is represented as a comparatively small vanishing point P (cf. Fig. 6a).

[0095] As the distance decreases, the vanishing point P enlarges and, at a smaller distance from the obstacle (Hb, compare Fig. 5) one like in Fig. Size shown in 6b.

[0096] The change in the size of the vanishing point P preferably occurs continuously with decreasing distance of the obstacle H in front of the motor vehicle V.

[0097] Conversely, i.e., with a potentially increasing distance to the obstacle H, the vanishing point P continuously decreases.

[0098] With the help of Fig. Section 7 should describe that the explained procedure can serve not only to visualize a planned movement trajectory of the motor vehicle V or to represent an obstacle located in front of it.

[0099] Rather, the visualization according to the invention for the following vehicle F also includes the assessment (of the driver) of the preceding vehicle V of how critical a traffic situation is perceived to be. This can, in particular, lead to an (increased) readiness to brake by the preceding vehicle.

[0100] Thus, in Fig. Figure 7 schematically illustrates that when an obstacle approaches (from Ha to Hb), the driver of motor vehicle V releases their foot 9 from the accelerator pedal 6 and positions it near the brake pedal 7. The driver of motor vehicle V thus enters a state of (increased) braking readiness. This is detected by a sensor 8, which is connected to the evaluation and processing unit 2 (see Figure 7). Fig. 1) is connected by a signaling system not shown in detail.

[0101] This in turn leads to a corresponding control of the display device 4 which is part of the rear lights 5.

[0102] The corresponding visualization is in Fig. 8 shown.

[0103] It is evident that this in turn is achieved by a representation of the obstacle ahead (Ha, Fig. 7) is visualized using a vanishing point P.

[0104] As the distance decreases (Hb, Fig. 7) and the associated readiness to brake of the motor vehicle V, the vanishing point P is greatly enlarged, so that the vanishing point P makes up a large part of the area on the display device or on the rear lights 5 (cf. Fig. 8b).

[0105] In the case of visualizing brake readiness, it is also useful if the representation of the area forming the vanishing point P appears as an illuminated area (preferably in red).

[0106] The following vehicle F is warned in good time by this visualization that the vehicle V in front has gone into increased braking readiness and could brake soon.

[0107] It should be noted that an algorithm, which is not further explained, can be used to determine precisely how a driving situation of the motor vehicle V, detected by the detection device 1 or sensor (1, 8), is to be displayed on the display device 4 with regard to its criticality. This is therefore also a question of the interaction between the sensor and the algorithm, which is preferably stored in the evaluation and processing unit 2.

[0108] For example, the algorithm can be used to determine the extent to which the vanishing point P should be enlarged depending on the approach of the foot 9 to the brake pedal 7 detected by the sensor 8, or the extent to which the position of the vanishing point P should be changed depending on a detected steering angle.

[0109] During actual braking, the rear lights 5 are controlled in a known manner, so that the intensity of the emitted light is greatly increased for the duration of the braking process.

[0110] It is advantageous if the inventive method is further developed in such a way that a visualization of the traffic situation applicable to the preceding motor vehicle on the rear lights 5 of the motor vehicle V only takes place if the traffic situation also requires increased attention for the following vehicle F.

[0111] This is especially the case when the motor vehicle V is heading towards a curve, when an obstacle is approaching the motor vehicle V and / or when the motor vehicle V (for whatever reason) goes into a braking readiness position.

[0112] At least in such cases, it is advisable to activate the described visualization dynamically.

[0113] Finally, it is based on Fig. Figure 9 shows that the visualization can be carried out not only on a display device of the rear lights 5, but also by means of a projection device 10 on an area 11 of a rear window of the preceding motor vehicle V.

[0114] The projection device 10 can, for example, be located in the headliner of the motor vehicle V and can realize the visualization by means of a vanishing point P in the manner described, for example by laser projection onto the area 11 of the rear window.

[0115] The invention is not limited to the embodiment(s) described above. These were only used to generally illustrate the core concept of the invention. Within the scope of its protection, the invention may also include embodiments or configurations other than those described above. In particular, it may also include features that represent a combination of individual features of the respective claims. REFERENCE MARK LIST 1 Detection device for the area surrounding the motor vehicle 2 Evaluation and calculation unit 3 Navigation unit 4 Display device 40 freely programmable display 41 Intermediate areas 5 taillights 6 Accelerator pedal 7 Brake pedal 8 Sensor 9 feet 10 projection units 11 Area on the rear window E Detection area of ​​the detection device F Follow vehicle G geometric element H stationary or moving obstacle Ha obstacle with a further distance to the motor vehicle HB obstacle with a shorter distance to the motor vehicle Left shift M Middle position on the taillight P Vanishing point R Rightward shift t1 Time at which the motor vehicle transitions from straight-ahead driving to cornering t0 Time at which the motor vehicle is still traveling straight ahead Δt Time interval from t0 to t1 T Trajectory of movement (travel path) of the motor vehicle Ta Left turn Tb Right turn V preceding motor vehicle

Claims

[1] Method for visualizing a current or anticipated traffic situation (H, T) relating to a preceding motor vehicle (V) for a following vehicle (F), wherein at least one detection and evaluation device (1, 2, 3) of the preceding motor vehicle (V) detects and evaluates the current or anticipated traffic situation (H, T) applicable to it, and at least one display device (4, 5, 10, 11) of the preceding motor vehicle (V) visible to the following vehicle (F) is controlled or controllable in such a way that the current or anticipated traffic situation (H, T) applicable to the preceding motor vehicle (V) is visualized (P) or can be visualized on the at least one display device (4, 5, 10, 11), characterized by, that the visualization on the display device (4,5,10,11) is formed by at least one perspective representation with a geometrically generated vanishing point (P), wherein the vanishing point (P) is changed or can be changed in its appearance depending on the detected, current or expected traffic situation (H,T) on the display device (4,5,10,11). [2] Method according to any one of the preceding claims, characterized by , that the vanishing point (P) is changed depending on a motion trajectory (T, Ta, Tb) of the preceding motor vehicle (V) at least in its horizontal position (L, R) on the display device (4,5,10,11). [3] Method according to any one of the preceding claims, characterized by , that the vanishing point (P) is at least enlarged on the display device (4,5,10,11) when the preceding motor vehicle (V) approaches an obstacle (H, Ha, Hb). [4] Method according to any one of the preceding claims, characterized by , that the vanishing point (P) is at least enlarged on the display device (4,5,10,11) during a foreseeable braking process of the vehicle ahead (V). [5] Method according to any one of the preceding claims 2 to 4, characterized by , that the vanishing point (P) is adjusted with a time lead (Δt) to a probable traffic situation (Ta, Tb). [6] Motor vehicle (V) for carrying out the method according to one of the preceding claims with at least one device (1,3) for detecting the environment (E) and at least one device (2) for evaluating the data obtained as well as at least one controllable display device (4,5,10) on which a current or expected traffic situation (H,T) applicable to the motor vehicle (V) can be visualized for a following vehicle (F), characterized by, that the display device (4,5,10) can be controlled in such a way that a perspective representation with a geometric vanishing point (P) can be generated on it, which, depending on the detected traffic situation (H,T), can be changed in its appearance on the display device (4,5,10), in particular in its position, size and / or shape. [7] Motor vehicle (V) according to claim 6, characterized by , that the display device (4,5) is formed by a lighting device (5) or a part (4) thereof. [8] Motor vehicle (V) according to claim 6, characterized by that the display device is or can be formed at least also by an area (11) of a rear window of the motor vehicle (V).

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