DE202016000640U1 - Head-up display of a motor vehicle and motor vehicle - Google Patents

Abstract

Head-up display of a motor vehicle (2) having a housing (8) intended to be integrated into a dashboard (4) of the motor vehicle (2), comprising: • a combiner (14) for combining an image ( 18) of the head-up display (6) and an environment perceptible by the combiner (14) in front of the motor vehicle (2), wherein the combiner (14) can be moved from a non-use position to a use position, • an imager (10) for generating the image (18, 20), wherein the image generator (10) is designed to project the image (18) onto the combiner (14) via a first beam path (11.1) and via a second beam path (11.2) a warning image (20) projecting onto a windshield (26), and • a deflecting mirror (24) for directing the warning image (20) onto the windshield (26), the deflecting mirror (24) being arranged on the windshield side.

Description

Hereinafter, a head-up display of a motor vehicle and a corresponding motor vehicle will be described. The head-up display is intended to be integrated into a motor vehicle.

Head-up displays of the aforementioned type and motor vehicles are generally known. Head-up displays are display systems in which a driver is projected into his field of view information that allows the driver to perceive the information while maintaining his head posture. Head-up displays generally consist of an imaging unit, an optical module and a projection surface. The imaging unit generates the image to be projected and the optics module directs the image onto the screen. The projection surface is at least to a degree reflective and translucent at the same time. The image generated by the imaging unit is superimposed by the reflection on the projection surface of the image of the underlying environment. The user thus sees the mirrored image of the imaging unit and at the same time the real world behind the reflection surface. It is also known to design the projection surface, which is referred to in the jargon as a combiner, on the windshield or to provide a separate combiner. Separate combiners are usually retractable when not in use.

The US 2014/0002252 discloses a motor vehicle display device having an obstacle detection device and a display unit on a surface of a dashboard having first and second displays adapted to project a series of information points onto the windshield so as to superimpose information points with a real image.

Furthermore, collision warning devices are known which visually warn a driver of an impending collision. Such optical warning devices should attract the attention of the driver in a very short time.

Motor vehicles offer a variety of equipment options that can be selected by the customer. For this reason, individual modules are developed for many functions, which are installed according to selected equipment in a motor vehicle or not. The large number of necessary modules increases the logistical effort of the manufacturer and the costs for the provision of spare parts supply increase.

In addition, motor vehicles are often offered as right-handed and left-handed variants. Due to the different curvatures and inclinations of the windshield for right- and left-hand drive vehicles, optical systems such as head-up displays have to date been adapted to the corresponding variants.

It is therefore an effort to reduce the complexity of motor vehicles and to achieve a higher integration of functions.

For safety reasons, collision warning devices should be positioned closer to a windshield edge so that they provide an undisturbed view of the road in the bright state, which is especially important in dangerous situations.

Furthermore, the arrangement of a head-up display in the dashboard brings challenges when a collision warning should be positioned as described above, since a combiner in a state of use must not collide with the windshield.

Thus, the task of developing a head-up display and a motor vehicle of the type mentioned in such a way that the head-up display can be used for both right- and left-steered vehicles.

The object is achieved by a head-up display according to claim 1 and a motor vehicle according to the independent claim 11. Further embodiments are subject matters of the dependent claims.

• • einen Combiner zum Kombinieren eines Bildes des Head-up-Displays und einer durch den Combiner hindurch wahrnehmbaren Umgebung vor dem Kraftfahrzeug, wobei der Combiner von einer Nichtbenutzungsposition in eine Benutzungsposition verfahrbar ist,
• • einem Bildgeber zum Erzeugen des Bildes, wobei der Bildgeber dazu ausgebildet ist, über einen ersten Strahlengang ein Bild auf den Combiner zu projizieren und über einen zweiten Strahlengang ein Warnbild auf eine Windschutzscheibe zu projizieren, und
• • einem Umlenkspiegel, um das Warnbild auf die Windschutzscheibe zu lenken, wobei der Umlenkspiegel windschutzscheibenseitig angeordnet ist.

The head-up display of a motor vehicle described below has a housing which is intended to be integrated into a dashboard of the motor vehicle, the head-up display having:

• A combiner for combining an image of the head-up display and an environment perceptible by the combiner in front of the motor vehicle, wherein the combiner is movable from a non-use position to a use position,
• An image generator for generating the image, the image generator being designed to project an image onto the combiner via a first beam path and to project a warning image onto a windshield via a second beam path, and
• • A deflection mirror to direct the warning image on the windshield, wherein the deflecting mirror is arranged windshield side.

The combiner consists of an at least partially specular and at least partially transparent disc. The at least partially reflective side is facing the driver. The combiner can, for example, as semi-permeable Be designed mirror. The combiner can also be configured as a glass or plexiglass pane. Light is also reflected at the air-disk interface. The reflectance is large enough to be able to perceive the image well with sufficiently bright imager. The combiner is usually located in a use position in the lower part of a field of view of the driver. By the combiner, the environment of the motor vehicle is perceived so that the real environment image is combined with the image generated by the imager.

By the method of the combiner from a non-use position to a use position and vice versa, optical irritations at the edges of the combiner can be avoided when the head-up display is not in use.

"Image" as used herein is a perceptible and delimitable geometric shape and includes one or more lines and / or points, point arrangements, more complex shapes and the like.

The provision of two beam paths, one for displaying an image on the combiner and one for displaying a warning image on the windshield can also be switched off via the head-up display, in which the combiner is in the non-use position.

The deflecting mirror can be positioned very close to a root of the windscreen by the windshield-side arrangement. Thus, the beam guide for the warning image can be designed so that a reflection point on the windshield is achieved in a lower region.

In a first further embodiment, the imager can be designed to rotate the warning image depending on the installation position of the head-up display.

The installation position may be a right side or a left side of the vehicle, depending on the particular embodiment of the motor vehicle as right-hand drive or as left-hand drive.

In some embodiments, two imagers or imager parts may be provided, one for generating the image and one for generating the warning image.

In other embodiments, a single imager can be provided. In embodiments where only one imager is provided, the imager can simultaneously generate an image displayed on the combiner as well as the warning image that is directly reflected on the windshield, at least at a combiner in non-use position. The image which can be reflected on the windshield can be rotated as described above in order to be displayed in the correct position.

The imager can be, for example, an LCD display in one embodiment. The image generated by the imager can represent driving-related information that is usually displayed in the instrument panel, e.g. As current speed, maximum speed, speed, navigation instructions and the like.

In a further embodiment, the image generator can be rotatable so as to be brought into the correct position for the correct representation of the warning image on the windshield, depending on the installation position.

In an alternative embodiment, a controller may be provided with a computing unit and a memory, wherein in the memory, a computer program product is stored, which, when it is loaded into the arithmetic unit and executed by the arithmetic unit, is adapted to the installation position of the head-up Interrogate displays and rotate the warning image depending on the mounting position. In this way, a correction of the alignment of the warning image depending on the installation position can be achieved with the help of the arithmetic unit. In addition to rotating the warning image, other operations can be performed on the warning image, for example, to eliminate distortions generated by the disc curvature.

In a further refinement that goes beyond that, provision can be made for the installation position of the head-up display to be stored in the memory or in a separate memory. Such a memory can store the installation position, for example, in a configuration file which is requested by the computer program product. A separate memory may be a separate memory in the controller or another separate memory in the motor vehicle, for example, a memory of a motor vehicle control unit, are stored in the motor vehicle-specific data. By using a computer program product to properly align the warning image to be projected, the number of mechanical components and moving parts in the head-up display can be reduced.

In a further embodiment, an opening can be arranged on a windshield-side side of the housing, through which the second beam path is guided from the imager to the deflection mirror. Thus, the beam path can be guided flat to the deflection mirror, which is a recessed arrangement of the deflecting mirror, in particular outside the field of view of the driver allowed

In another further embodiment, the windshield-side deflecting mirror can be adjusted, so that the second beam path, which is generated by the imager in non-use position combiner, is directed to the windshield of the motor vehicle that the warning image generated thereby in a field of view of a driver of the motor vehicle lies. In this way, the beam guide can be designed so that the warning image in the windshield is at a fixed height, which would otherwise be in a different height, for example in an area to be kept clear.

According to another further embodiment, the combiner can be adjustable in order to adjust the display height of the mirrored information. For this purpose, the combiner can be height-adjustable and / or pivotable.

In another further embodiment, the deflecting mirror can be arranged on the housing of the head-up display. This results in a fully integrated module. Depending on the particular geometry, it may also be necessary to dispose the deflecting mirror not on the housing but outside the housing.

In an alternative further refinement, the deflecting mirror can be arranged on the dashboard. In this embodiment, the deflection mirror is not mounted on the housing of the head-up display, but is a separate element that can be positioned very close to a windshield root, without greatly increasing the housing of the head-up display.

In another further embodiment, the opening may be provided with a translucent disk or foil, which prevents soiling of the interior of the head-up display.

In another further embodiment, the disc or foil may be translucent, whereby the representation contrast is reduced. As a result, dazzling the driver can be avoided by excessive contrasts.

Furthermore, according to another further embodiment, the disc or foil may be a color filter. In particular, the color filter may be dark, resulting in a uniformly dark appearance of the dashboard that can prevent driver dazzling by sudden jumps in the brightness of the dashboard, which become visible as reflections. Such a color filter may be, for example, a red filter. Red filters may appear essentially black, but transparent or translucent for red light. The color emitted by the imager is then adjusted so that at least portions of the emitted light pass through the filter and onto the windshield to warn the driver.

In another further embodiment, the deflection mirror can be adjustable. By adjusting the deflection mirror, the warning image can be rotated accordingly and displayed correctly aligned.

In a further embodiment, at least two locking positions for fixing the deflecting mirror can be provided in accordance with at least two positions, wherein at least one locking position per possible installation position is provided.

In another further embodiment, it can be provided that the combiner is the cover. In this way, the number of necessary components can be reduced. In addition, the combiner can be moved to the non-use position to save space.

Alternatively, a separate cover may be provided. The cover can be especially matt. With the help of the cover, the head-up display can be covered when it is not activated, which on the one hand prevents reflections through the components of the head-up display on the windshield and on the other hand reduces contamination of the imaging elements.

Another further aspect provides that a drive, for example a linear drive and / or a rotary drive are provided to move the combiner between the non-use position and the use position. The linear drive can lead the combiner on a straight path or on a curved path. A rotary drive may have a corresponding kinematics to allow more complex trajectories, for. B. to adjust the combiner to adjust the position of the image.

The drive can also be used to optimize the image position to correctly position the image displayed on the combiner relative to the driver's eye position.

In a further embodiment, a diaphragm for covering the beam path can be provided with an open combiner. As a result, the second beam path can be blocked with the combiner open, so that only an image is displayed on the combiner. The eliminated Double representations of the warning picture on the windscreen and on the combiner. When the warning image is displayed on the combiner, the warning image can be turned so that it is displayed in the correct position.

The aperture can be arranged in one embodiment on the combiner. This allows the aperture to be placed in the correct position using the combiner's method.

A first independent subject relates to a motor vehicle with a head-up display of the aforementioned type. A corresponding motor vehicle allows the realization of a collision warning with the aid of a head-up display and thus with less complexity than in separate collision warning and head-up displays.

• • einem Combiner zum Kombinieren eines Bildes des Head-up-Displays und einer durch den Combiner hindurch wahrnehmbaren Umgebung vor dem Kraftfahrzeug, wobei der Combiner von einer Nichtbenutzungsposition in eine Benutzungsposition verfahrbar ist, und
• • einem Bildgeber zum Erzeugen des Bildes,
• • wobei bei einem in Nichtbenutzungsposition befindlichen Combiner im Falle einer drohenden Gefahr wenigstens ein Lichtstrahl von dem Bildgeber erzeugt und auf die Windschutzscheibe projiziert wird,
• • wobei der Bildgeber das Bild abhängig von der Einbauposition des Head-up-Displays dreht.

Another independent subject relates to a method of operating a head-up display with a housing intended to be integrated into a dashboard of the motor vehicle, comprising:

• A combiner for combining an image of the head-up display and an environment perceptible by the combiner in front of the motor vehicle, wherein the combiner is movable from a non-use position to a use position, and
• An imager for generating the image,
• Wherein, in the case of an imminent danger, at least one light beam is generated by the imager and projected onto the windshield in a combiner located in the non-use position,
• • The image generator rotates the image depending on the mounting position of the head-up display.

In this way, with a non-active head-up display a hazard warning, eg. B. issued a collision warning in the correct position depending on the installation position.

In a further embodiment, a deflecting mirror can be provided, which is adjusted in a position when not in use or in the non-position to be traversed or traveling combiner, so that the light beam to be projected on the windshield is adjustable in its position.

In a further embodiment of the method, a control of the head-up display queries the installation position of the head-up display before the image is projected. The query can be done by querying a memory in which the mounting position is stored. The memory may be part of the controller or be arranged outside the head-up display.

Further features and details will become apparent from the following description, in which - where appropriate, with reference to the drawings - at least one embodiment is described in detail. Described and / or illustrated features form the subject matter, or independently of the claims, either alone or in any meaningful combination, and in particular may additionally be the subject of one or more separate applications. The same, similar and / or functionally identical parts are provided with the same reference numerals. Here are shown schematically:

1 a side view of a head-up display with extended combiner;

2 the head-up display off 1 with retracted combiner;

3 a perspective view of the head-up display 1 with retracted combiner;

4a , b two views of the head-up display from the driver's point of view;

5 shows a side view of another head-up display;

6 a side view of the head-up display 5 when displaying information about a combiner;

7 a side view of the head-up display 5 when issuing warning information;

8th a representation of the head-up display 5 with extended combiner;

9 a perspective view of the head-up display 5 with retracted combiner.

The same or equivalent components are provided in the following embodiments to improve readability with the same reference numerals.

1 shows a side view of a motor vehicle 2 with a dashboard 4 and a head-up display mounted therein 6 ,

The head-up display 6 has a housing 8th in which a projector 10 to create an image 18 with driving information and a warning picture 20 are arranged. The projector 10 is a display, z. As an LCD display, OLED display or the like.

The projector 10 generates two beam paths, a first beam path 11.1 and a second beam path 11.2 , The first beam path 11.1 of the projector 10 gets on a combiner 14 to generate the image 18 directed.

The combiner 14 is powered by a drive 15 driven and so between a non-use position and a use position procedure. Also, an adjustment of the position and orientation of the combiner 14 is about the drive 15 possible.

The combiner 14 can simultaneously cover a housing opening 16 represent in the installed state substantially horizontally, that is oriented upward. In the present embodiment, an additional cover (not shown) is provided, which in particular has a matt surface.

The projector 10 is aligned in the direction of travel x forward and projected over the beam path 11.2 a warning picture 20 through one in the housing 8th essentially in the direction of travel x forward facing windshield side opening 22 , behind, based on the beam path 11.2 , a deflecting mirror 24 is arranged, from which the warning picture 20 on a windshield 26 thrown and reflected at this, from where the warning picture 20 becomes noticeable to the driver.

The deflection mirror 24 is in the dashboard 4 positioned. The dashboard 4 has an opening or recess 28 on, through which the second beam path 11.2 is guided.

The head-up display 6 has a controller 32 with a computing unit 34 and a memory 36 on. In the store 36 is a computer program product that stores when it is in the arithmetic unit 34 loaded and from the arithmetic unit 34 ; is executed, is set to the installation position of the head-up display 6 to interrogate and the warning picture 20 to rotate depending on the installation position.

The combiner 14 is designed so that in the use position the beam path from the projector 10 to the deflection mirror 24 like a blind 25 blocked. A warning picture 20 will then be on the combiner 14 shown.

2 shows the head-up display 2 out 1 with combiner in non-use position 14 ,

The beam path from the projector 10 to the deflection mirror 24 is released so that the warning picture above it 20 on the windshield 26 can be projected by the driver 30 ' can be perceived.

By the curvature of the windshield 26 must have the corresponding warning picture 20 be rotated and possibly rectified otherwise, in order to be able to be displayed correctly.

3 shows a perspective view of the head-up display 6 with the beam path 11.2 , the deflecting mirror arranged on the windshield side 24 on the windshield 26 is steered.

4a shows the perception as a driver of the motor vehicle on the head-up display 6 and on the windshield 26 ,

Due to the different orientation of Combiner 14 and windshield 26 becomes the warning picture 20 , shown here as an oval, in the correct position on the combiner 14 but turned on the windshield 26 shown.

According to the solution described here, by turning the warning image, as in 4b shown, a correct position display on the windshield 26 done, which requires that the representation on the combiner 14 would be turned.

5 shows a side view of a motor vehicle 2 ' with a dashboard 4 ' into which a head-up display 6 ' is installed.

The head-up display 6 ' has a housing 8th' in which a first projector 10 ' to create an image 18 ' with driving information and a second projector 12 ' for generating a warning image 20 ' are arranged. The first projector 10 ' is a display, z. As an LCD display, OLED display or the like. The second projector 12 ' is an LED array or array, but in other embodiments may also be a display.

The beam paths of the two projectors 10 ' . 12 ' are designed differently. The beam path 11.1 ' of the projector 10 ' gets on a combiner 14 ' steered by a drive 15 ' is driven.

The combiner 14 ' simultaneously provides a cover of a housing opening 16 ' in the installed state is substantially horizontal, ie oriented upward. Alternatively, an additional cover (not shown) may be provided, which in particular has a matt surface.

In the illustrated extended use position, the image becomes 18 ' on the combiner 14 ' steered and from this into the driver's field of vision.

The projector 12 ' is aligned in the direction of travel forward and projected by means of a beam path 11.2 ' a warning picture 20 ' through one in the housing 8th' essentially in the direction of travel x 'forward facing opening 22 ' , behind, based on the beam path 11.2 ' , a windshield-side deflection mirror 24 ' is arranged, from which the warning picture 20 ' on a windshield 26 ' thrown and reflected on this.

The deflection mirror 24 ' is in the dashboard 4 ' positioned. The dashboard 4 ' has an opening or recess 28 ' on, through which the beam path 11.2 ' can get.

The head-up display 6 ' has a controller 32 ' with a computing unit 34 ' and a memory 36 ' on. In the store 36 ' is a computer program product stored that when it is in the arithmetic unit 34 ' loaded and from the arithmetic unit 34 ' is executed, is set to the installation position of the head-up display 6 ' to interrogate and the warning picture 20 ' to rotate depending on the installation position.

6 shows the beam path 11.1 ' to a driver 30 ' ,

The beam path 11.1 ' of the picture 18 ' is calculated so that the driver 30 ' the picture 18 ' over the combiner 14 ' perceives.

7 shows the beam path 11.2 ' when the head-up display is switched off 6 ' in the case of a delivery of a warning picture 20 ' by means of the second projector 12 ' ,

The warning picture 20 ' will depend on the curvature of the windshield 26 ' so from the second projector 12 ' It generates the correct position from the driver 30 ' is perceived.

The configuration shown can also be used when the head-up display is switched off 6 ' and in non-use position combiner 14 ' a warning picture 20 ' be delivered.

8th shows the combined delivery of a warning image 20 ' by means of the second projector 12 ' and a picture 18 ' over the combiner in use position 14 ' ,

With activated head-up display 6 ' and in use position combiner 14 ' can simultaneously display driving information, such as speed, engine speed, temperature, driving information etc. via the combiner 14 ' and a warning picture 20 ' over the second projector 12 ' on the windshield 26 ' respectively.

The warning picture 20 ' appears for the driver 30 ' higher than the first picture 18 ' so the warning picture 20 ' not with combiner in use position 14 ' is covered by this.

9 shows a schematic perspective view of the motor vehicle 2 ' ,

The combiner 14 ' is between dashboard 4 ' and windshield 26 ' arranged and is transparent. A corresponding combiner 14 ' may for example consist of a plexiglass.

Although the subject matter has been further illustrated and explained in detail by way of embodiments, the invention is not limited by the disclosed examples, and other variations can be derived therefrom by those skilled in the art. It is therefore clear that a multitude of possible variations exists. It is also to be understood that exemplary embodiments are only examples that are not to be construed in any way as limiting the scope, applicability, or configuration of the invention. Rather, the foregoing description and description of the figures enable one skilled in the art to practice the exemplary embodiments, and those of skill in the knowledge of the disclosed inventive concept may make various changes, for example, to the operation or arrangement of particular elements recited in an exemplary embodiment, without Protected area, which is defined by the claims and their legal equivalents, such as further explanation in the description.

LIST OF REFERENCE NUMBERS

2, 2 '

motor vehicle

4, 4 '

dashboard

6, 6 '

Head-Up Display

8, 8 '

casing

10

projector

10 '

first projector

11.1, 11.1 '

first ray path

11.2, 11.2 '

second beam path

12 '

second projector

14, 14 '

Assemblers

15, 15 '

drive

16, 16 '

opening

18, 18 '

image

20, 20 '

warning image

22, 22 '

opening

24, 24 '

deflecting

25 '

cover

26, 26 '

Windshield

28, 28 '

opening

30, 30 '

driver

32, 32 '

control

34, 34 '

computer unit

36, 36 '

Storage

x, x '

direction of travel

QUOTES INCLUDE IN THE DESCRIPTION

This list of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Cited patent literature

• US 2014/0002252 [0003]

Claims (11)

Head-up display of a motor vehicle ( 2 ) with a housing ( 8th ), which is intended for use in a dashboard ( 4 ) of the motor vehicle ( 2 ) with: • a combiner ( 14 ) for combining an image ( 18 ) of the head-up display ( 6 ) and one through the combiner ( 14 ) perceptible environment in front of the motor vehicle ( 2 ), whereby the combiner ( 14 ) is movable from a non-use position to a use position, an imager ( 10 ) for generating the image ( 18 . 20 ), the imager ( 10 ) is adapted to the image ( 18 ) via a first beam path ( 11.1 ) on the combiner ( 14 ) and via a second beam path ( 11.2 ) a warning picture ( 20 ) on a windshield ( 26 ), and • a deflecting mirror ( 24 ), the warning picture ( 20 ) on the windscreen ( 26 ), wherein the deflection mirror ( 24 ) windshield side is arranged. Head-up display according to claim 1, wherein the imager ( 10 ) is adapted to the warning image ( 20 ) depending on the installation position of the head-up display ( 6 ) to turn. Head-up display according to claim 2, wherein the imager ( 10 ) is rotatable. Head-up display according to claim 2, wherein a controller ( 32 ) with a computing unit ( 34 ) and a memory ( 36 ) is provided, wherein in the memory ( 36 ) a computer program product is stored which, when stored in the arithmetic unit ( 34 ) and from the arithmetic unit ( 34 ) is set up, the installation position of the head-up display ( 6 ) and the warning picture ( 20 ) to rotate depending on the installation position. Head-up display according to claim 4, wherein the installation position of the head-up display ( 6 ) In the storage room ( 36 ) or stored in a separate memory. Head-up display according to one of the preceding claims, wherein an opening ( 22 ) on a windshield side of the housing ( 8th ) is arranged, through which the second beam path ( 11.2 ) from the imager ( 10 ) to the deflection mirror ( 24 ) is guided. Head-up display according to one of the preceding claims, wherein the deflection mirror ( 24 ) on the housing ( 8th ) is arranged. Head-up display according to one of claims 1 to 7, wherein the deflection mirror ( 24 ) on the dashboard ( 4 ) can be arranged. Head-up display according to one of claims 7 or 8, wherein the deflection mirror ( 24 ) is rotatable. Head-up display according to one of the preceding claims, wherein a diaphragm ( 25 ' ) for concealing the second beam path ( 11.2 ) with open combiner ( 14 ) is provided. Motor vehicle with a head-up display ( 6 ) according to any one of the preceding claims.

Images