Head-up display device

Abstract

The invention relates to a display device (12) comprising: a support (20) having a partially reflective portion called a useful portion (24); a screen (28) capable of emitting a light beam; and a mechanism (30) for adjusting the position and / or orientation of the screen (28) according to an associated driver profile (16), such that in a head-up display mode, the light beam emitted from the screen (28) is reflected by the useful portion (24) to form a virtual image (IM) in the field of view of the associated driver profile (16); and in a direct display mode, an item of information emitted from the screen (28) can be read directly on the screen (28) by the associated driver profile (16).

Description

[Technical Field]

[0001] The present invention relates to a head-up display device for a vehicle, and further to an associated vehicle. [Background technology]

[0002] Vehicles, particularly automobiles, are equipped with a control panel, also called an instrument cluster or dashboard, to present the driver with information useful for driving and operating the vehicle. For this purpose, the control panel consists of the vehicle's on-board instruments, some of which are required by law.

[0003] In automobiles, control panels are traditionally integrated into the vehicle's dashboard, below the windshield and behind the steering wheel. Typically, such control panels are positioned at least -15° from the average driver's line of sight, approximately 50 centimeters from their eyes, as they look at the road. This forces the driver to look away from the road, which requires constant visual accommodation effort, reducing alertness and increasing eye fatigue.

[0004] In order to be able to display useful information more safely, it is known to use a head-up display which conveys to the driver several items of information coming from a control panel.

[0005] Nevertheless, such displays occupy additional space in the vehicle due to the redundancy of the control panel and can be quite bulky. Furthermore, in certain situations, especially at high brightness, the contrast of the information items emitted by the head-up display can be reduced, which can have a negative impact on driving safety. [Prior art documents] [Patent documents]

[0006] [Patent Document 1] GB Patent Application Publication No. 2049984 [Patent Document 2] European Patent Application Publication No. 3076221 Summary of the Invention [Problem to be solved by the invention]

[0007] Therefore, there is a need for an ergonomic device that allows a driver to easily visualize information useful in controlling the vehicle to improve driving safety and maintain driver alertness. [Means for solving the problem]

[0008] To this end, the present invention relates to a head-up display device for a vehicle, the display device comprising a head-up display mode and a direct display mode, each mode being adjustable for different driver profiles, the display device comprising: a support that can be placed opposite the upper part of the body of the driver in the driving position, at least a part of the support, called the useful portion, being partially reflective; - a unit for transmitting control information for the vehicle, the unit including a screen capable of emitting at least one light beam; - A mechanism for adjusting the position and / or orientation of the screen according to a relevant driver profile, such as: In head-up display mode, the light beam emitted from the screen is reflected by the useful part of the support to form a virtual image in the field of view of the relevant driver profile in the driving position; In direct display mode, information items emitted by the screen can be read directly on the screen depending on the associated driver profile.

[0009] According to other advantageous aspects, the display device comprises one or more of the following features, taken individually or according to all technically possible combinations: The device has at least one element, called a HUD element, that is capable of masking the direct view of the screen in a head-up display mode. - the HUD element or at least one HUD element: an adjustment mechanism that, in a head-up display mode, can adjust the position and / or orientation of the screen to mask the direct view of the screen by the associated driver profile; and / or a screen with a viewing angle of 45° or less in head-up display mode to limit the direct view of the screen; and / or a shutter, called a screen shutter, that can mask the direct view of the screen for the associated driver profile in head-up display mode, but does not mask the direct view of the screen for the associated driver profile in direct display mode; is. - if the screen has a light-emitting surface contained in a plane called the screen plane and said HUD element or at least one HUD element is an adjustment mechanism, the adjustment mechanism is capable of adjusting the position and / or orientation of the screen in head-up display mode so that the angle directed between the screen plane and a normal to the useful part passing through the center of the screen (called the HUD angle) is less than or equal to an angle called the limit HUD angle, which is the angle at which the screen is not visible to the relevant driver profile while allowing the reflection of the beam emitted by the screen onto the useful part of the support to form a virtual image in the field of view of the relevant driver profile. The device includes at least one element, called a direct element, which, in direct display mode, is capable of preventing the generation of spurious virtual images resulting from the beam emitted from the screen being reflected by the useful part of the support. - the direct element or at least one direct element: an adjustment mechanism that can adjust the position and / or orientation of the screen in direct viewing mode to prevent the generation of spurious virtual images due to the beam emitted from the screen being reflected by the useful part of the support; a screen that, in direct viewing mode, has a viewing angle of 45° or less to limit the generation of spurious virtual images due to the beam from the screen reflecting off the useful part of the support; and / or A shutter called a support shutter, which prevents the beam from reflecting off the screen onto the support in direct display mode, but does not prevent reflection in head-up display mode. is. - the screen has a light-emitting surface contained in a plane called the screen plane, and if said direct element or at least one direct element is an adjustment mechanism, the adjustment mechanism is capable of adjusting the position and / or orientation of the screen in direct viewing mode so that the angle directed between the normal to the useful part passing through the center of the screen and the screen plane (called the direct angle) is less than or equal to the limit direct angle, which is the angle at which the beam from the screen is not reflected by the useful part of the support while allowing a direct view of the screen; - the light emitting unit includes at least one optical element along the path of the light beam emitted by the screen in the head-up display mode and / or the direct display mode in order to modify the characteristics of the image seen by the relevant driver profile; - the useful portion has a non-zero curvature so as to form a concave mirror on the driver's side, and the adjustment mechanism includes at least one pivot element for pivoting the screen, the pivot point of the pivot element being selected so that in head-up display mode the screen is located at a predetermined distance from the useful portion that is comprised between a minimum distance and a maximum distance, the maximum distance being selected according to the radius of curvature of the concave mirror so that the virtual image formed is the same image for the right and left eyes of the associated driver profile.

[0010] The present invention also relates to a vehicle equipped with the above-mentioned display device. [Brief explanation of the drawings]

[0011] [Figure 1] 1 is a schematic diagram of an example of a head-up display device having a head-up display mode and a direct display mode. [Figure 2] 10 is a schematic diagram of an example of the adjustment made by the adjustment mechanism to mask the direct view of the screen in head-up display mode. FIG. [Figure 3] FIG. 10 is a schematic diagram of another example of adjustment by an adjustment mechanism to mask the direct view of the screen in head-up display mode depending on an associated driver profile. [Figure 4] FIG. 10 is a schematic diagram of an example of adjustments made by an adjustment mechanism to prevent the generation of spurious virtual images in direct display mode. [Figure 5] 10 is a schematic diagram of an example of a screen viewing angle limiting option for limiting the direct view of the screen in head-up display mode. FIG. [Figure 6] FIG. 10 is a schematic diagram illustrating an example of a screen shutter that can mask the direct view of the screen in head-up display mode for an associated driver profile. [Figure 7] 10 is a schematic diagram of an example in which the height of the screen shutter is selected to mask the direct view of the screen for the driver profile considered in head-up display mode, without blocking the direct view of the screen in direct display mode. [Figure 8] 10 is a schematic diagram of an example of a support shutter that can prevent reflection of the beam coming from the screen to the support in direct display mode. FIG. [Figure 9] FIG. 10 is a schematic diagram of an example where the height of the support shutter is selected to prevent reflection of the beam coming from the screen onto the support in direct display mode, but not to prevent reflection in head-up display mode. DETAILED DESCRIPTION OF THE INVENTION

[0012] Other characteristics and advantages of the invention will become apparent on reading the following description which follows of embodiments of the invention given by way of limiting example only and on referring to the following drawings, in which:

[0013] A head-up display device 12 is shown in FIG.

[0014] The display device 12 can be incorporated into a vehicle, such as a land, air, or naval vehicle. A land vehicle can be, for example, an automobile, a rail vehicle, a two-wheeled vehicle (motorized or not), or a three-wheeled vehicle (motorized or not).

[0015] The display device 12 is for displaying vehicle control information to the driver 16 while the vehicle is being driven by the driver 16. Such control information includes, for example, information from the vehicle's on-board devices, navigation information, safety information, communication information, etc. from the vehicle's on-board system or the driver's electronic devices such as a smartphone.

[0016] By way of example, the information relates to the vehicle's speedometer, the vehicle's energy consumption, alarms related to malfunctions of certain components of the vehicle, or navigation information (mapping, position, direction).

[0017] The display device 12 has two different display modes: a head-up display mode and a direct display mode. In the head-up display mode, the display device 12 can form a virtual image IM in the field of view of the driver 16 when in a driving position. In the direct display mode, the display device 12 can display driving information on a screen directly visible to the driver 16. The display modes are described below.

[0018] Each display mode is adjustable (configurable) according to a different driver profile 16, i.e., the position and / or orientation of each mode is adjustable according to the driver profile. A driver profile is a body template for a vehicle driving posture. For example, each display mode is adjustable to cover a range of driver profiles from the 5th percentile of the female population (small women) to the 95th percentile of the male population (tall men).

[0019] It is preferable that the display device 12 has the function of a vehicle dashboard and is integrated with the dashboard. In this case, the vehicle's on-board devices are displayed only on the display device 12. Therefore, the vehicle dashboard does not have any mechanical dashboard instruments or digital dashboard instruments integrated with the dashboard, which are different from the display device 12. In this case, the display device 12 is configured to be automatically turned on when the vehicle ignition is turned on and automatically turned off when the vehicle ignition is turned off.

[0020] 1, the display device 12 comprises a support 20, a unit 22 for transmitting vehicle control information, and an adjustment mechanism 30. Preferably, the display device 12 further comprises at least one element referred to as a HUD element 36 and / or at least one element referred to as a direct element 38, the function of which will be explained in detail below.

[0021] The support 20 can be positioned opposite the upper body (at least a portion of the torso) of the driver 16 in the driving position.

[0022] The support 20 is, for example, transparent or partially transparent.

[0023] The support 20 is made of, for example, polycarbonate.

[0024] The substrate 20 has at least one portion, called the useful portion 24, that is partially reflective.

[0025] In one embodiment, as shown in Figure 1, the useful portion 24 is covered with a reflector element 26 that provides a partial reflection function. The reflector element 26 is, for example, a coating or treatment (e.g., obtained by physical or chemical deposition) or a film (e.g., laminated or held by electrostatic effects).

[0026] In a variant, the reflective element 26 is inside the useful portion 24 .

[0027] 1, the useful portion 24 extends over only a portion of the support 20, in this case the portion that allows the generation of a virtual image IM in the field of view (direct or peripheral) of the driver 16 in a driving position, as will be explained below. In a variant, the useful portion 24 extends over the entire support 20.

[0028] In the example shown in Figure 1, the useful portion 24 is substantially flat. In a variant, the useful portion 24 has a non-zero curvature so as to form a concave mirror on the driver's side.

[0029] The support 20 is preferably an element capable of deflecting the air while the vehicle is in operation. The support 20 therefore has the function of a windscreen and is called such. In particular in the case of motorcycles, it is also called a deflector or bubble. In a variant, the support 20 is a blade, also called a "combiner".

[0030] The light-emitting unit 22 can display vehicle control information, preferably including information provided by the vehicle's onboard instruments, or navigation, safety, or communication information coming from the vehicle's onboard system or the driver's electronic device, such as a smartphone. To this end, the light-emitting unit 22 can emit at least one light beam.

[0031] The transmission unit 22 comprises at least one screen 28. The screen 28 has a light-emitting surface contained in a plane called the screen plane PE.

[0032] Preferably, the lighting unit 22 includes at least one optical element along the path of the light beam emitted by the screen 28 in the head-up display mode and / or the direct display mode to change the characteristics (e.g., magnification) of the image seen by the associated driver 16. The optical element is, for example, a lens or a mirror. The optical element may, for example, be attached to the screen 28 or not. The optical element may, for example, be used in only one mode.

[0033] Preferably, the screen 28 is capable of displaying a real image onto which the emitted light beams from the light-emitting units 22 are projected.

[0034] Preferably, in head-up display mode, the screen 28 is brighter than in direct display mode. Alternatively, the brightness of the screen 28 is the same for both modes or is adaptive for each mode.

[0035] The screen 28 is, for example, a liquid crystal display (LCD) or an organic light emitting diode (OLED) screen.

[0036] The adjustment mechanism 30 may adjust the position and / or orientation of the screen 28 according to the associated driver profile 16 as follows: - in head-up display mode, the light beam emitted from the screen 28 is reflected by the useful part 24 of the support 20 to form a virtual image IM in the field of view of the associated driver profile 16 in the driving position, In direct display mode, the information emitted by the screen 28 can be read directly on the screen 28 by the associated driver profile 16 (when the driver 16 in the driving position is looking at the screen 28).

[0037] The adjustment mechanism 30 includes a pivot element 31 (as in FIG. 1 ) that can, for example, pivot the screen 28 between a head-up display mode and a direct display mode and, where appropriate, adjust the orientation of the screen 28 to the associated driver profile 16. The pivot element 31 can, for example, be a pivot, a ball joint, a curved slide or correspond to a curved guide or correspond to a particular kinematics.

[0038] Preferably, the pivot point of the pivot element 31 is selected so that in head-up display mode the screen 28 is located at a predetermined distance from the useful portion 24 comprised between a minimum distance and a maximum distance.

[0039] In particular, if the useful portion 24 of the support 20 has a non-zero curvature so as to form a concave mirror on the driver side, the maximum distance is selected as a function of the radius of curvature of the concave mirror so as to compensate for the optical imbalance between the right and left eyes of the associated driver profile 16. In other words, the maximum distance is selected as a function of the radius of curvature of the concave mirror so that the virtual image IM formed is the same image for the right and left eyes of the associated driver profile 16. For example, the maximum distance is given by the following formula:

[0040] d max =-A·R 2 +B·R+C where: · d max is the maximum distance, R is the radius of curvature of the concave mirror, and A, B, and C are positive numbers.

[0041] The minimum distance is, for example, the minimum distance that allows the beam from the screen 28 to be reflected onto the useful part 24 of the support 20 .

[0042] Preferably, the pivot element 31 allows the screen 28 to rotate about a pivot axis in order to correct the orientation of the (real) image generated by the screen 28. This causes the image to be inverted in the head-up display mode and not inverted in the direct display mode. For example, if the screen 28 is a 16 / 9 screen and the display on the screen 28 is in landscape mode, the pivot axis is horizontal. If the screen 28 is a 16 / 9 screen and the display on the screen 28 is in portrait mode, the pivot axis is vertical.

[0043] Preferably, the adjustment mechanism 30 further includes a translation element that can translate the screen 28 as a function of the associated driver profile 16, and in some cases can also translate the screen 28 between a head-up display mode and a direct display mode.

[0044] In head-up display mode, the HUD element 36 can mask the direct view of the screen 28, thereby preventing information from the screen 28 from cluttering the driver's 16's view, other than information from light reflected from the screen 28 on the support 20.

[0045] 2 and 3, at least one HUD element 36 is an adjustment mechanism 30. In such a case, the adjustment mechanism 30 may adjust the position and / or orientation of the screen 28 such that the direct view of the screen 28 is masked by the associated driver profile 16 in a head-up display mode.

[0046] In the example embodiment shown in FIGS. 2 and 3, the adjustment mechanism 30 adjusts the angle oriented between the screen plane PE and the normal N to the useful portion 24 that passes through the center of the screen 28, referred to as the HUD angle α, to a limit HUD angle α L The position and / or orientation of the screen 28 in the head-up display mode can be adjusted so that the limit HUD angle α is equal to or less than the limit HUD angle α Lis the angle at which the screen 28 is not visible to the associated driver profile 16 while still allowing the formation of a virtual image IM within the field of view of the driver profile 16 by reflection of the beam emitted by the screen 28 on the useful part 24 of the support 20.

[0047] As a result, in the configuration on the left side of Figure 2, the HUD angle α is set to the limit HUD angle α L , and the screen 28 remains visible in the direct line of sight, while in the right configuration, the HUD angle α is greater than the limit HUD angle α L , and the screen 28 is masked in the direct view. L depends on the eye height h of the relevant driver profile 16 relative to the screen 28 (for the same HUD angle α1, a profile with height h1 has a direct view, while a profile with height h2 has a masked view).

[0048] 5, at least one HUD element 36 is a screen 28. In this case, the screen 28 has a viewing angle of 45° or less in head-up display mode, limiting direct viewing of the screen 28. A reduced viewing angle of the screen 28 can be achieved, for example, by using a different screen technology (IPS, TN) or by adding a privacy filter on the screen 28.

[0049] More specifically, the left configuration in Figure 5 shows the screen 28 with a larger viewing angle than in the right configuration. As a result, in head-up display mode, for the same position and orientation of the screen 28 and the same driver profile 16, the screen 28 is in direct view for the left configuration but masked for the right configuration. Used in addition to the previous examples (Figures 2 and 3), this can relax requirements on the HUD angle α or the eye height h of the driver 16.

[0050] 6 and 7, at least one HUD element 36 is a shutter (mechanical privacy screen) called a screen shutter that can mask a direct view of the screen 28 for the associated driver profile 16 in a head-up display mode, but does not mask a direct view of the screen 28 by the associated driver profile 16 in a direct display mode.

[0051] 6, the screen shutter can mask the direct view of the screen 28 more than the configuration on the left. Figure 7 shows that the height of the screen shutter is selected so as not to mask the direct view of the screen 28 in the direct viewing mode (for the same driver profile 16, the direct view is visible for a screen shutter with height H1 but masked for a screen shutter with height H2). This adjustment can be made by changing the height of the screen shutter or by changing its position.

[0052] Those skilled in the art will appreciate that different versions of HUD elements can be combined within the same display device 12 (adjustment mechanism 30 and / or screen 28 and / or shutter screen viewing angle).

[0053] Each direct element 38 can prevent the generation of spurious virtual images in the direct display mode due to the beam emitted by the screen 28 being reflected on the useful portion 24 of the support 20. This prevents the driver 16 from being distracted by information other than that directly visible from the screen 28 in the direct display mode.

[0054] 4, the at least one direct element 38 is an adjustment mechanism 30. In such a case, the adjustment mechanism 30 can adjust the position and / or orientation of the screen 28 in a direct viewing mode to prevent the generation of spurious virtual images due to the beam emitted by the screen 28 reflecting off the useful portion 24 of the support 20.

[0055] In the example embodiment shown in FIG. 4 , the adjustment mechanism 30 adjusts the position and / or orientation of the screen 28 in head-up display mode so that the angle directed between the normal N to the useful portion 24 passing through the center of the screen 28 and the screen plane PE (referred to as the direct angle β) is less than the limit direct angle β L The limit direct angle β can be set as follows: L (which may be negative) is the angle at which the beam from the screen 28 is no longer reflected on the useful part 24 of the support 20 while still allowing the screen 28 to be viewed directly.

[0056] 4, the direct angle β is greater than the critical direct angle, resulting in the generation of spurious virtual images resulting from the reflection of the beam from the screen 28 on the useful portion 24 of the support 20. On the other hand, in the configuration on the right side of FIG. 4, the direct angle β is less than the critical direct angle, resulting in no spurious virtual images.

[0057] In another embodiment, the at least one direct element 38 is a screen 28. In such a case, the screen 28 has a viewing angle of 45° or less in the direct viewing mode to limit reflection of the beam from the screen 28 on the useful portion 24 of the support 20.

[0058] A reduction in the viewing angle of the screen 28 can be obtained, for example, by using different screen technologies (IPS, TN) or by adding a privacy filter on the screen 28.

[0059] Used in addition to the previous example (FIG. 4), this makes it possible to relax the requirements on the direct angle β or height h of the driver's 16 eyes.

[0060] 8 and 9, the or at least one direct element 38 is a shutter (mechanical privacy screen) called a support shutter, which can prevent reflection of the beam from the screen 28 onto the support 20 in direct display mode without preventing such reflection in head-up display mode.

[0061] 8, the support shutter can prevent the beam from being reflected from the screen 28 onto the support 20, compared to the configuration on the left. Figure 9 illustrates the selection of the support shutter height in head-up display mode so as not to prevent the beam from being reflected from the screen 28 onto the support 20 (for the same driver profile 16, reflection is prevented for a support shutter with a height Hd1 and is completely unprevented for a support shutter with a height Hd2). The adjustment can be made by changing the height of the support shutter or by changing its position.

[0062] Those skilled in the art will understand that different versions of direct elements can be combined within the same display device 12 (adjustment mechanism 30 and / or viewing angle of screen 28 and / or shutter support).

[0063] Next, the operation of the display device 12 will be described.

[0064] In head-up display mode, the position and / or orientation of the screen 28 of the display device 12 is adjusted by an adjustment mechanism 30 in accordance with the associated driver profile 16 so that a light beam emitted by the screen 28 is reflected by the useful part 24 of the support 20 to form a virtual image IM in the field of view of the associated driver profile 16. Where appropriate, HUD elements make it possible to mask the direct view of the screen 28.

[0065] In the direct display mode, the position and / or orientation of the screen 28 of the display device 12 is adjusted by the adjustment mechanism 30 in accordance with the associated driver profile 16 so that information emitted by the screen 28 can be read directly on the screen 28 by the associated driver profile 16. Where appropriate, one or more direct elements prevent the generation of spurious virtual images resulting from reflection of the beam emitted by the screen 28 on the useful part 24 of the support 20.

[0066] This allows the display device 12, with its two display modes, to be an ergonomic, compact device that is easily integrated into the vehicle, and such display device 12 facilitates the driver 16 to safely view information useful for driving, whatever the ambient conditions, because it can be easily switched from one mode to another.

[0067] In embodiments with HUD and / or direct elements, spurious virtual images (arising from parasitic reflections in direct display mode and direct view of screen 28 in head-up display mode) are further reduced to further improve visibility of useful information and enable safer driving.

[0068] Such a display device 12 is often incorporated into a vehicle in place of the instrument panel, although it can also be used in addition to the instrument panel.

[0069] Those skilled in the art will appreciate that the above-described embodiments may likely be combined with each other where such combinations are compatible.

Claims

1. A head-up display device (12) for a vehicle, comprising a head-up display mode and a direct display mode, each mode adjustable for a different driver profile (16), the display device (12) comprising: a support (20) that can be placed opposite the upper body of a driver (16) in a driving position, at least a part of said support (20), called the useful part (24), being partially reflective; a unit (22) for transmitting vehicle control information, said unit (22) having a screen (28) capable of emitting at least one light beam; a mechanism (30) for adjusting the position and / or orientation of said screen (28) according to an associated driver profile (16), said mechanism comprising: in the head-up display mode, a light beam emitted from the screen (28) is reflected by the useful part (24) of the support (20) to form a virtual image (IM) in the field of view of an associated driver profile (16) in a driving position; In the direct display mode, the information items emitted by the screen (28) can be read directly on the screen (28) by the associated driver profile (16); A mechanism (30); The device is provided with:

2. 2. The device of claim 1, wherein the device (12) comprises at least one element, referred to as a HUD element (36), capable of masking a direct view of the screen (28) in the heads-up display mode.

3. At least one of the HUD elements (36) comprises: an adjustment mechanism (30) that, in the head-up display mode, can adjust the position and / or orientation of the screen (28) to mask a direct view of the screen (28) by an associated driver profile (16); and / or b. the screen (28) having a viewing angle of 45° or less in the head-up display mode to limit the direct view of the screen (28); and / or c. a shutter, called a screen shutter, capable of masking a direct view of the screen (28) for an associated driver profile (16) in the head-up display mode, and not masking a direct view of the screen (28) by an associated driver profile (16) in the direct display mode; 3. The device of claim 2, wherein:

4. The screen (28) has a light-emitting surface contained in a plane called a screen plane (PE), and if the HUD element (36) or at least one HUD element (36) is the adjustment mechanism (30), the adjustment mechanism (30) is configured to adjust the angle (called a HUD angle (α)) oriented between the screen plane (PE) and a normal (N) to the useful portion (24) passing through the center of the screen (28) in the head-up display mode so that the angle (called a HUD angle (α)) is less than a limit HUD angle (α Ｌ The position and / or orientation of the screen (28) can be adjusted so that the limit HUD angle (α Ｌ 4. The device according to claim 3, wherein the screen (28) is at an angle such that the screen (28) is not visible to the associated driver profile (16) while allowing a virtual image (IM) to be formed within the field of view of the associated driver profile (16) by reflection of a beam emitted from the screen (28) on the useful portion (24) of the support (20).

5. The device (12) according to any one of claims 1 to 4, further comprising at least one element called a direct element (38) that, in the direct display mode, can prevent the generation of spurious virtual images due to the beam emitted from the screen (28) being reflected by the useful part (24) of the support (20).

6. The or at least one direct element (38) comprises: a) the adjustment mechanism (30) capable of adjusting the position and / or orientation of the screen (28) in the direct display mode so as to prevent the generation of spurious virtual images caused by the beam emitted from the screen (28) being reflected by the useful portion (24) of the support (20); b. the screen (28), in the direct viewing mode, having a viewing angle of 45° or less to limit the generation of spurious virtual images due to the beam from the screen (28) reflecting off the useful portion (24) of the support (20); and / or c. a shutter, called a support shutter, which is capable of preventing reflection of the beam from the screen (28) onto the support (20) in the direct display mode, but does not prevent said reflection in the head-up display mode; 6. The device of claim 5, wherein:

7. The screen (28) has a light-emitting surface contained in a plane called the screen plane (PE), and if the direct element or at least one direct element (38) is the adjustment mechanism (30), the adjustment mechanism (30) adjusts the angle (called the direct angle (β)) directed between the normal (N) to the useful portion (24) passing through the center of the screen (28) and the screen plane (PE) to a limit direct angle (β Ｌ The position and / or orientation of the screen (28) in the direct display mode can be adjusted so that the limit direct angle (β Ｌ 5. The device according to claim 1, wherein the angle of the beam from the screen (28) is such that the beam is not reflected by the useful part (24) of the support (20) while allowing a direct view of the screen (28).

8. 5. The device according to claim 1, wherein the lighting unit (22) includes at least one optical element along the path of the light beam emitted by the screen (28) in the head-up display mode and / or the direct display mode to modify the characteristics of the image seen by an associated driver profile (16).

9. 5. The device according to claim 1, wherein the useful portion (24) has a non-zero curvature so as to form a concave mirror on the driver's side, and the adjustment mechanism (30) comprises at least one pivot element (31) for pivoting the screen (28), the pivot point of which is selected so that in the head-up display mode, the screen (28) is located at a predetermined distance from the useful portion (24) comprised between a minimum distance and a maximum distance, the maximum distance being selected depending on the radius of curvature of the concave mirror so that the virtual image (IM) formed is the same image for the right eye and the left eye of the associated driver profile (16).

10. A vehicle equipped with the device according to any one of claims 1 to 4.

Images