Head-up display device

Abstract

The present application relates to a display device (12) comprising:-a support (20) having a partially reflective portion, referred to as an active 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) as a function of the associated driver profile (16) such that, in a head-up display mode, the light beam emitted by the screen (28) is reflected from the active 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, the light beam emitted by the screen (28) is reflected from the active portion (24) to form the virtual image (IM) in the field of view of the associated driver profile (16). The information items emitted by the screen (28) can be directly read on the screen (28) by the relevant driver contour (16).

Description

[0001] The present application relates to a head-up display device for a vehicle and also relates to a related vehicle.

[0002] Vehicles, especially motor vehicles, are equipped with a control panel, also called a dashboard or instrument panel, to display information to the driver that is helpful in driving and operating the vehicle. To this end, the control panel includes the on-board instruments of the vehicle, some of which are required by law.

[0003] For motor vehicles, the control panel is usually integrated into the dashboard below the vehicle windshield, behind the steering wheel. Typically, such a control panel is arranged at an angle of at least -15° to the average driver's line of sight to the road, and about 50 cm from the eyes. This requires the driver to look away from the road to view the control panel, which reduces alertness and increases eye fatigue due to the continuous required visual adjustment effort.

[0004] In order to display useful information more safely, it is known to use a head-up display which transmits a small amount of information from the control panel to the driver.

[0005] However, such displays take up additional space in vehicles, making control panels redundant and, in some cases, very bulky. In addition, in certain situations, especially in high-brightness environments, the information provided by the head-up display sometimes has low contrast, which can have a negative impact on driving safety.

[0006] Therefore, there is a need for an ergonomic device that enables the driver to more easily view information useful for controlling the vehicle, thereby improving driving safety and maintaining the driver's alertness.

[0007] To this end, the present application 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 according to different driver profiles, the display device comprising:

[0008] - a support adapted to be placed opposite the upper part of the body of the driver in the driving position, at least a portion of said support, called the active portion, being partially reflective,

[0009] - a unit for transmitting vehicle control information, the unit for transmitting information comprising a screen suitable for emitting at least one light beam,

[0010] - A mechanism for adjusting the position and / or orientation of the screen according to the relevant driver profile and enabling:

[0011] ● In head-up display mode, the light beam emitted by the screen is reflected at the active part of the support to form a virtual image in the field of view of the relevant driver's profile in the driving position, and

[0012] In direct display mode, the information items emitted by the screen can be read directly on the screen by the relevant driver profile.

[0013] According to further advantageous aspects, the display device comprises one or more of the following features, which can be used individually or in all technically possible combinations.

[0014] - The device comprises at least one element, so called HUD element, adapted to obstruct the direct view of the screen in heads-up display mode.

[0015] - the HUD element or at least one HUD element is:

[0016] an adjustment mechanism adapted to adjust the position and / or orientation of the screen so that in head-up display mode the direct view of the screen is obscured by the associated driver profile, and / or

[0017] a screen having a viewing angle of less than or equal to 45 degrees in the heads-up display mode so as to limit the direct view of the screen, and / or

[0018] A shield, referred to as a screen shield, adapted to shield the direct view of the screen for the associated driver profile in the head-up display mode, and not to shield the direct view of the screen for the associated driver profile in the direct display mode.

[0019] -The screen has an emitting surface contained in a plane, which is called the screen plane. When the HUD element or at least one HUD element is an adjustment mechanism, the adjustment mechanism is suitable for adjusting the position and / or orientation of the screen in the head-up display mode so that the angle between the screen plane and the normal of the effective part passing through the center of the screen, called the HUD angle, is less than or equal to an angle called the limiting HUD angle, which refers to the angle at which the screen is not visible to the relevant driver profile and the light beam emitted by the screen is reflected on the effective part of the support, allowing a virtual image to be formed in the field of view of the driver profile.

[0020] The device comprises at least one element, called direct element, suitable for preventing, in direct display mode, the generation of false virtual images due to reflections of the light beam emitted by the screen on the active parts of the support.

[0021] - the direct element or at least one direct element is:

[0022] an adjustment mechanism adapted to adjust the position and / or orientation of the screen so as to prevent, in direct display mode, the generation of false virtual images due to reflections of the light beam emitted by the screen on the active part of the support,

[0023] a screen having a viewing angle less than or equal to 45 degrees in direct display mode so as to limit the generation of false virtual images due to reflections of light beams from the screen on the active parts of the support, and / or

[0024] A shield, called screen shield, adapted to prevent the light beams coming from the screen from being reflected on the support in direct display mode, while not hindering said reflections in head-up display mode.

[0025] -The screen has an emitting surface contained in a plane, which is called the screen plane. When the or at least one direct element is an adjustment mechanism, the adjustment mechanism is suitable for adjusting the position and / or direction of the screen in the direct display mode so that the angle between the normal of the effective part passing through the center of the screen and the screen plane, called the direct angle, is less than or equal to the limiting direct angle, which refers to the angle at which the light beam from the screen is no longer reflected on the effective part of the support while allowing a direct view of the screen.

[0026] The emitting unit comprises at least one optical element along the path of the light beam emitted by the screen in the head-up display mode and / or in the direct display mode to modify the properties of the visible image of the relevant driver profile.

[0027] - the active portion has a non-zero curvature so that a concave mirror is formed on the driver's side, the adjustment mechanism comprises at least one pivot element suitable for pivoting the screen, the pivot point of the pivot element being selected so that in the head-up display mode, the distance between the screen and the active portion is between a minimum distance and a maximum distance, the selection of the maximum distance depending on the radius of curvature of the concave mirror so that the virtual image formed is the same image for the right eye and the left eye of the relevant driver profile.

[0028] The present application also relates to a vehicle comprising the device as described above.

[0029] Other features and advantages of the present application will emerge after reading the following detailed description, which follows the embodiments of the present application, purely as limiting examples, and with reference to the following drawings:

[0030] -[ Figure 1 ] Figure 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,

[0031] -[ Figure 2 ] Figure 2is a schematic diagram of an example of an adjustment mechanism being adjusted to block a direct view of a screen in a head-up display mode,

[0032] -[ Figure 3 ] Figure 3 is a schematic diagram of another example of an adjustment mechanism being adjusted to block a direct view of a screen based on a relevant driver profile in head-up display mode,

[0033] -[ Figure 4 ] Figure 4 is a schematic diagram of an example of an adjustment performed by an adjustment mechanism in a direct display mode to prevent generation of a false virtual image,

[0034] -[ Figure 5 ] Figure 5 is a schematic diagram of an example of selecting a restricted viewing angle for a screen to limit a direct view of the screen in a heads-up display mode,

[0035] -[ Figure 6 ] Figure 6 is a schematic diagram of an example of a screen shield suitable for shielding a direct view of the screen for a driver's profile in a head-up display mode,

[0036] -[ Figure 7 ] Figure 7 Schematic diagram of an example of selecting a screen visor height so that in head-up display mode, the direct view of the screen is obscured for a considered driver profile, but in direct display mode, the direct view of the screen is not obscured,

[0037] -[ Figure 8 ] Figure 8 is a schematic diagram of an example of a method for preventing a light beam from a screen from being reflected on a support shield of a support in a direct display mode, and

[0038] -[ Fig. 9 ] Fig. 9 Schematic diagram of an example of selecting a support shield height so as to prevent a light beam from a screen from being reflected on the support in the head-up display mode, while not obstructing the reflection in the head-up display mode.

[0039] Figure 1 A heads-up display device 12 is shown.

[0040] The display device 12 is suitable for integration in a vehicle. The vehicle may be, for example, a land, air or water vehicle. The land vehicle may be, for example, a motor vehicle, a rail vehicle, a two-wheeled vehicle (whether motorized or not) or a three-wheeled vehicle (whether motorized or not).

[0041] When the driver 16 is driving the vehicle, the display device 12 is adapted to display control information of the vehicle to the driver 16. Such control information is, for example, onboard instrument information from the vehicle, navigation information, safety information, or communication information from an onboard system of the vehicle or an electronic device of the driver (such as a smartphone).

[0042] For example, this information relates to an indication of the speed of the vehicle, the energy consumption of the vehicle, warnings related to the malfunction of certain components of the vehicle or navigation information (maps, position, directions).

[0043] The display device 12 has two different display modes, namely, a head-up display mode and a direct display mode. In the head-up display mode, the display device 12 is adapted to form a virtual image IM in the field of vision of the driver 16 in the driving position. In the direct display mode, the display device 12 is adapted to display driving information on a screen that can be directly viewed by the driver 16. These two display modes will be discussed in detail in the following description.

[0044] Each display mode can be adjusted (configured) according to different driver profiles 16, that is, the position and / or orientation of each mode can be adjusted according to the driver profile. The driver profile refers to the body template of the driver in the driving posture in the vehicle. For example, each display mode can be adjusted to cover driver profiles from the fifth percentile of the female population (small women) to the ninety-fifth percentile of the male population (tall men).

[0045] Preferably, the display device 12 should have the function of an integrated vehicle instrument panel. Therefore, in this case, the vehicle's onboard instruments are only displayed on the display device 12. Therefore, the vehicle's instrument panel does not have mechanical instrument panels integrated in the instrument panel and digital instrument panels integrated in the instrument panel, which are different from the display device 12. In this case, the display device 12 is configured to automatically turn on when the ignition switch in the vehicle is turned on, and automatically turn off when the ignition switch in the vehicle is turned off.

[0046] like Figure 1 As shown, the display device 12 includes a bracket 20, a unit 22 for transmitting vehicle control information, and an adjustment mechanism 30. Preferably, the display device 12 also includes at least one element called a HUD element 36 and / or at least one element called a direct element 38, the functions of which will be discussed in detail in the subsequent description.

[0047] The support 20 is adapted to be positioned facing the upper body (at least a portion of the torso) of the driver 16 in the driving position.

[0048] For example, the support 20 is transparent or translucent.

[0049] For example, the bracket 20 is made of polycarbonate.

[0050] The support 20 has at least one portion, referred to as the active portion 24, which is partially reflective.

[0051] In an example of an implementation, Figure 1 As shown, the effective portion 24 is covered by a reflective element 26 imparting a partial reflective function. The reflective element 26 is, for example, a coating or treatment layer (eg, obtained by physical or chemical deposition) or a film (eg, fixed by lamination or electrostatic effect).

[0052] In a variant, the reflective element 26 is located inside the active portion 24 .

[0053] exist Figure 1 In the example of the embodiment, the effective portion 24 extends to cover only a portion of the support 20, in which case the portion enables the generation of a virtual image IM in the field of vision (direct field of vision or peripheral field of vision) of the driver 16 in the driving position, as described below. In a variant, the effective portion 24 extends to cover the entire support 20.

[0054] exist Figure 1 In the example shown, the active portion 24 is substantially flat. In a variant, the active portion 24 has a non-zero curvature so that a concave mirror is formed on the driver's side.

[0055] Preferably, the support 20 is an element suitable for deflecting the air when the vehicle is moving. The support 20 thus has the function of a windshield, hence its name. In particular in two-wheeled vehicles, it is also called a deflector or bubble. In a variant, the support 20 is a blade, also called a "combiner".

[0056] The transmitting unit 22 is adapted to display control information of the vehicle. The information preferably includes information provided by an onboard instrument, or navigation information, safety information or communication information provided by an onboard system of the vehicle or an electronic device of the driver (such as a smartphone). To this end, the transmitting unit 22 is adapted to emit at least one light beam.

[0057] The transmission unit 22 comprises at least one screen 28 having an emission surface contained in a plane, which is referred to as the screen plane P. E .

[0058] Preferably, the transmitting unit 22 comprises 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 properties (e.g. magnification) of the visible image of the relevant driver profile 16. The optical element is, for example, a lens or a reflector. The optical element is, for example, attached to or not attached to the screen 28. The optical element is, for example, used only in one mode.

[0059] Preferably, the screen 28 is adapted to display a real image from which the light beam from the emitting unit 22 is emitted.

[0060] Preferably, in the head-up display mode, the brightness of the screen 28 is higher than that in the direct display mode. In a variant, the brightness of the screen 28 is the same in both modes, or can be changed according to each mode.

[0061] The screen 28 is, for example, a liquid crystal display (LCD) or an organic light emitting diode (OLED) screen.

[0062] The adjustment mechanism 30 is adapted to adjust the position and / or orientation of the screen 28 according to the relevant driver profile 16 such that:

[0063] - in head-up display mode, the light beams emitted by said screen 28 are reflected at the active part 24 of the support 20 so as to form a virtual image IM in the field of vision of the relevant driver profile 16 in the driving position; and

[0064] In direct display mode, the relevant driver profile 16 can read the information emitted by the screen 28 directly on the screen 28 (when the driver 16 in the driving position views the screen 28 ).

[0065] The adjustment mechanism 30 includes, for example, a pivoting member 31 (eg, Figure 1 ), which is suitable for rotating the screen 28 between the head-up display mode and the direct display mode and, if appropriate, adjusting the orientation of the screen 28 to the relevant driver profile 16. The pivot element 31 is, for example, a pivot, a ball joint, a curved slide or corresponding to a curved guide, or a specific kinematic structure.

[0066] Preferably, the pivot point of the pivot element 31 is selected so that in the head-up display mode, the distance between the screen 28 and the active portion 24 is between the minimum distance and the maximum distance.

[0067] Specifically, when the effective portion 24 of the support 20 has a non-zero curvature to form a concave mirror on the driver's side, the selection of the maximum distance depends on the radius of curvature of the concave mirror so as to compensate for the optical difference between the right eye and the left eye of the relevant driver profile 16. In other words, the selection of the maximum distance depends on the radius of curvature of the concave mirror so that the formed virtual image IM is the same image for the right eye and the left eye of the relevant driver profile 16. For example, the maximum distance is given by the following formula:

[0068] d max =-AR 2 +B.R+C

[0069] in:

[0070] ·d max is the maximum distance,

[0071] ●·R is the radius of curvature of the concave mirror, and

[0072] ●A, B and C are positive numbers.

[0073] The minimum distance is, for example, the minimum distance that allows the light beam from the screen 28 to be reflected on the effective portion 24 of the support 20 .

[0074] Preferably, the pivoting element 31 is adapted to pivot the screen 28 about a pivot axis to modify the orientation of the (real) image generated by the screen 28. Thus, for the head-up display mode, the image is inverted, while for the direct display mode, the image is not inverted. For example, when the screen 28 is a 16 / 9 screen and the display on the screen 28 is a landscape display, the pivot axis is horizontal. When the screen 28 is a 16 / 9 screen and the display on the screen 28 is a portrait display, the pivot axis is vertical.

[0075] Preferably, the adjustment mechanism 30 further comprises a shifting element adapted to shift the screen 28 according to the associated driver profile 16 and possibly also adapted to shift the screen 28 between a head-up display mode and a direct display mode.

[0076] The or each HUD element 36 is adapted to block the direct view of the screen 28 in the head-up display mode, thereby preventing information from the screen 28 (other than information from the light beam from the screen 28 reflecting on the bracket 20) from interfering with the driver's 16 vision.

[0077] exist Figure 2 and Figure 3In the embodiment shown, the HUD element 36 or at least one HUD element 36 is an adjustment mechanism 30. In this case, the adjustment mechanism 30 is adapted to adjust the position and / or orientation of the screen 28 so that the direct view of the screen 28 is obscured by the associated driver profile 16 in the head-up display mode.

[0078] exist Figure 2 and Figure 3 In the example of the embodiment shown, the adjustment mechanism 30 is suitable for adjusting the position and / or orientation of the screen 28 in the head-up display mode so that the screen plane P E The angle between the normal N of the effective part 24 passing through the center of the screen 28 is called the HUD angle α, and the angle less than or equal to the limit HUD angle α L The limiting HUD angle α L This means that the screen 28 is not visible to the relevant driver profile 16 , while the light beam emitted by the screen 28 is reflected on the effective part 24 of the bracket 20 , allowing an angle of the virtual image IM to be formed in the field of view of the driver profile 16 .

[0079] Therefore, in Figure 2 In the left configuration, the HUD angle α is greater than the limit HUD angle α L , the screen 28 is still visible in the direct view, and in the right configuration, the HUD angle α is less than or equal to the limit HUD angle α L , the screen 28 is obscured from direct view. Figure 3 Explains the limit HUD angle α L This is due to the fact that the eyes of the relevant driver profile 16 are at a height h relative to the screen 28 (for the same HUD angle α1 , the direct view is visible for a profile at height h1 , but is blocked for a profile at height h2 ).

[0080] exist Figure 5 In another embodiment shown, the HUD element 36 or at least one HUD element 36 is a screen 28. In this case, in the head-up display mode, the viewing angle of the screen 28 is less than or equal to 45 degrees so as to limit the direct view of the screen 28. For example, the viewing angle of the screen 28 can be reduced by using different screen technologies (such as IPS, TN) or adding a privacy film to the screen 28.

[0081] More specifically, Figure 5 The left configuration in FIG. 1 shows a screen 28 with a larger viewing angle than the right configuration. Therefore, for the same position and orientation of the screen 28 and the same driver profile 16, in the head-up display mode, the screen 28 is still directly visible in the left configuration, while being blocked in the right configuration. Combined with the previous example ( Figure 2 and Figure 3 ) is used, which allows relaxing the requirements for the HUD angle α or the driver's 16 eye height h.

[0082] exist Figure 6 and Figure 7 In another example of embodiment shown, the HUD element 36 or at least one HUD element 36 is a shield (mechanical privacy screen), referred to as a screen shield. In the head-up display mode, the screen shield is suitable for shielding the direct view of the relevant driver profile 16 to the screen 28, while in the direct display mode, it does not shield the direct view of the relevant driver profile 16 to the screen 28.

[0083] Therefore, in Figure 6 In the right side configuration, the screen shield is adapted to block a direct view of the screen 28 as compared to the left side configuration. Figure 7 The selection of the screen shade height is described so that the direct view of the screen 28 is not blocked in the direct display mode (for the same driver profile 16, when the screen shade height is H1, the direct view is visible, but when the screen shade height is H2, the direct view is blocked). This adjustment can be accomplished by changing the height or position of the screen shade.

[0084] Those skilled in the art will appreciate that different versions of HUD elements (adjustment mechanism 30 and / or viewing angle of screen 28 and / or screen shield) may be combined within the same display device 12 .

[0085] The or each direct element 38 is adapted to prevent, in direct display mode, the generation of false virtual images due to reflections of the light beam emitted by the screen 28 on the active portion 24 of the support 20. This prevents information (other than that coming from the direct view of the screen 28) from interfering with the vision of the driver 16 in direct display mode.

[0086] exist Figure 4 In the example of embodiment shown, the direct element 38 or at least one direct element 38 is an adjustment mechanism 30. In this case, the adjustment mechanism 30 is suitable for adjusting the position and / or orientation of the screen 28 so that in direct display mode, the generation of false virtual images due to reflections of the light beam emitted by the screen 28 on the active part 24 of the support 20 is prevented.

[0087] exist Figure 4 In the example of the embodiment shown, the adjustment mechanism 30 is adapted to adjust the position and / or orientation of the screen 28 in the head-up display mode so that the normal N of the effective portion 24 passing through the center of the screen 28 is aligned with the screen plane P E The angle between them is called the direct angle β, which is less than or equal to the limiting direct angle β L , the limiting direct angle β LThe angle (which may be negative) refers to the angle at which the light beam from the screen 28 is no longer reflected on the active portion 24 of the support 20, while allowing a direct view of the screen 28.

[0088] Therefore, in Figure 4 In the left configuration of , the direct angle β is greater than the limiting direct angle, and a false virtual image is generated due to the reflection of the light beam from the screen 28 on the effective part 24 of the bracket 20. Figure 4 In the right side configuration, the direct angle β is less than or equal to the direct limit angle, and no false virtual image is generated.

[0089] In another example of embodiment, the direct element 38 or at least one direct element 38 is a screen 28. In this case, the viewing angle of the screen 28 in direct display mode is less than or equal to 45 degrees, so that the reflection of the light beam from the screen 28 on the active part 24 of the support 20 is limited.

[0090] The viewing angle of the screen 28 can be reduced by using different screen technologies (such as IPS, TN) or adding an anti-peep film on the screen 28.

[0091] Combining the previous example ( Figure 4 ) is used, which allows relaxing the requirements on the driver's 16 eye direct angle β or height h.

[0092] exist Figure 8 and Fig. 9 In another example of embodiment shown, the direct element 38 or at least one direct element 38 is at least a shield (mechanical privacy screen), called a support shield. In direct display mode, the support shield is suitable for preventing the light beam from the screen 28 from being reflected on the support 20, while in head-up display mode, it does not hinder the reflection.

[0093] Therefore, with Figure 8 Compared with the left side configuration, Figure 8 In the right side configuration, the bracket shield is more suitable for preventing the light beam from the screen 28 from being reflected on the bracket 20. Fig. 9 The selection of the bracket shield height is described so that the reflection of the light beam from the screen 28 on the bracket 20 is not blocked in the head-up display mode (for the same driver profile 16, when the bracket shield height is Hd1, the reflection is blocked, but when the bracket shield height is Hd2, the reflection is not blocked at all). This adjustment can be accomplished by modifying the height or position of the bracket shield.

[0094] Those skilled in the art will appreciate that different versions of direct elements (adjustment mechanism 30 and / or viewing angle of screen 28 and / or stand shield) may be combined within the same display device 12 .

[0095] The operation of the display device 12 will now be described.

[0096] In the head-up display mode, the position and / or orientation of the screen 28 of the display device 12 is adjusted by the adjustment mechanism 30 according to the relevant driver profile 16, so that the light beam emitted by the screen 28 is reflected on the effective part 24 of the bracket 20, thereby forming a virtual image IM in the field of view of the relevant driver profile 16. Where appropriate, the HUD element can block the direct view of the screen 28.

[0097] In direct display mode, the position and / or orientation of the screen 28 of the display device 12 is adjusted according to the relevant driver profile 16 by means of the adjustment mechanism 30, so that the relevant driver profile 16 can read the information emitted by the screen 28 directly on the screen 28. Where appropriate, the direct element or elements prevent the generation of false virtual images due to reflection of the light beam emitted by the screen 28 on the active part 24 of the support 20.

[0098] Thus, due to its two display modes, the display device 12 is an ergonomic and compact device that can be easily integrated into a vehicle. Such a device 12 facilitates the driver 16 to safely view information useful for driving in any environmental conditions, since it can be simply switched from one mode to the other.

[0099] To further improve the view of useful information and enable safe driving, in embodiments including HUD elements and / or direct elements, false images (created by parasitic reflections in direct display mode and direct view of screen 28 in heads-up display mode) are further reduced.

[0100] Such a display device 12 is also suitable for integration into a vehicle to replace the instrument panel. However, it can also be used as an additional device for the instrument panel.

[0101] Those skilled in the art will appreciate that the above-described embodiments may likely be combined with each other when the above-described combinations are compatible.

Claims

1. A head-up display device (12) for a vehicle, the display device (12) comprising a head-up display mode and a direct display mode, each mode being adjustable according to different driver profiles (16), the display device (12) comprising: - a support (20) adapted to be placed opposite the upper part of the body of the driver (16) in the driving position, at least a portion of the support (20), called the active portion (24), being partially reflective, a transmission unit (22) for transmitting vehicle control information, said transmission unit (22) comprising a screen (28) adapted to emit at least one light beam, - a mechanism (30) for adjusting the position and / or orientation of the screen (28) according to the relevant driver profile (16) and causing: In head-up display mode, the light beam emitted by the screen (28) is reflected on the active part (24) of the support (20) to form a virtual image (IM) in the field of vision of the relevant driver profile (16) in the driving position, and In direct display mode, the information items transmitted by the screen (28) can be read directly on the screen (28) by the associated driver profile (16).

2. The device (12) according to claim 1, wherein: The device (12) includes at least one element, referred to as a HUD element (36), which is adapted to obstruct the direct view of the screen (28) in a heads-up display mode.

3. The device (12) according to claim 2, wherein: The HUD element (36) or at least one HUD element (36) is: a. an adjustment mechanism (30) adapted to adjust the position and / or orientation of the screen (28) so that a direct view of the screen (28) by an associated driver profile (16) is obscured in the head-up display mode, and / or b. a screen (28), wherein in the head-up display mode, the viewing angle of the screen (28) is less than or equal to 45 degrees, so as to limit the direct view of the screen (28), and / or c. A shield, referred to as a screen shield, adapted to shield the associated driver profile (16) from a direct view of the screen (28) in a head-up display mode, while not shielding the associated driver profile (16) from a direct view of the screen (28) in a direct display mode.

4. The device (12) according to claim 3, wherein: The screen (28) has a plane called the screen plane (P E ), when the HUD element (36) or at least one HUD element (36) is an adjustment mechanism (30), the adjustment mechanism (30) is suitable for adjusting the position and / or direction of the screen (28) in the head-up display mode so that the screen plane (P E ) and the normal (N) passing through the center of the effective portion (24) of the screen (28), called the HUD angle (α), is less than or equal to the limit HUD angle (α L ), the limiting HUD angle (α L ) refers to the angle at which the screen (28) is not visible to the relevant driver profile (16) and at the same time allows the formation of a virtual image (IM) in the field of vision of the driver profile (16) by the light beam emitted by the screen (28) being reflected on the active part (24) of the support (20).

5. The device (12) according to any one of claims 1 to 4, wherein: The device (12) comprises at least one element, referred to as direct element (38), adapted to prevent, in direct display mode, the generation of false virtual images due to reflections of light beams emitted from the screen (28) on the active part (24) of the support (20).

6. The device (12) according to claim 5, wherein: The direct element (38) or at least one direct element (38) is: a. an adjustment mechanism (30) adapted to adjust the position and / or orientation of the screen (28) so as to prevent the generation of a false virtual image due to reflection of a light beam emitted from the screen (28) on the effective portion (24) of the support (20) in the direct display mode, b. a screen (28) having a viewing angle less than or equal to 45 degrees in direct display mode, so as to limit the generation of false virtual images due to reflection of a light beam from the screen (28) on the effective part (24) of the support (20), and / or c. A shield, called screen shield, adapted to prevent the light beam from the screen (28) from being reflected on the support (20) in direct display mode, while not hindering said reflection in head-up display mode.

7. The device (12) according to any one of claims 1 to 6, wherein: The screen (28) has a plane called the screen plane (P E ), when the direct element (38) or at least one direct element (38) is an adjustment mechanism (30), the adjustment mechanism (30) is suitable for adjusting the position and / or direction of the screen (28) in the direct display mode so that the normal (N) of the effective part (24) passing through the center of the screen (28) is aligned with the screen plane (P E ) is less than or equal to the limiting direct angle (β), wherein the limiting direct angle (β) refers to the angle at which the light beam from the screen (28) is no longer reflected on the effective part (24) of the bracket (20) and at the same time allows a direct view of the screen (28).

8. The device (12) according to any one of claims 1 to 7, wherein: The transmitting unit (22) comprises 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 properties of the image visible to the associated driver (16).

9. The device (12) according to any one of claims 1 to 8, wherein: The active portion (24) has a non-zero curvature so that a concave mirror is formed on the driver's side, and the adjustment mechanism (30) includes at least one pivoting element (31) suitable for pivoting the screen (28), and the pivot point of the pivoting element (31) is selected so that in the head-up display mode, the distance between the screen (28) and the active portion (24) is between a minimum distance and a maximum distance, and the selection of the maximum distance depends on the curvature radius 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 relevant driver profile (16).

10. A vehicle comprising the device according to any one of claims 1 to 9.

Images