FR3023926A1 - DISPLAY DEVICE, IN PARTICULAR FOR A MOTOR VEHICLE - Google Patents

Abstract

The present invention relates to a display device, especially for a motor vehicle, comprising a projection module for generating an image for projection in the normal direction of view of a user of the display device according to an optical path, the display device comprising a reflection and / or display element, the reflection and / or display element being able to be moved between a rest position and at least one display position, the device display device comprising a support for the reflection and / or display element such that the reflection and / or display element is moved between its rest position and its at least one display position by the intermediate support, the reflection element and / or display having a main extension direction, and the support and the reflection element and / or display being connected via a bearing element between supp ort and the reflection and / or display element such that the reflection and / or display element is retained on both sides along the main extension direction of the reflection element and / or display, the reflection element and / or display traversing - relative to the support - at least partially a rotational movement between its rest and display positions, the bearing element comprising at least one housing element of the bearing element and at least one insert of the bearing element.

Description

DISCLOSURE DEVICE, IN PARTICULAR FOR MOTOR VEHICLE Description The present invention relates to a display device, in particular for a motor vehicle. Head-up display devices (HUD) are known, particularly with the projection of an image to a windshield as described in US 5214413 or to a reflection element. The high-vision vision display devices project information into the field of view of the space in front of the motor vehicle so that the driver of the motor vehicle can read this information without taking his eyes off the space in front of the vehicle. automobile. At the same time, the information can be read without modification of the accommodation of the eyes of the driver of the vehicle. It is advantageous that - depending on the needs of a user of the vehicle the reflection and / or display element may be used at several positions of the head (or eyes) of the vehicle user. A disadvantage of such devices according to the prior art consists in the fact that the efforts to achieve the connection between the support of a reflection element and / or display and the reflection element and / or display are relatively high. DE 2005 031 357 C2 proposes a special assembly of the display device. The present invention is intended in particular to overcome the drawbacks of the prior art, especially those mentioned above, and also aims to provide a head-up display device having a reflection element and / or display which is connected to its support reliably and with reduced costs, and which makes this link so as to allow a rotational movement between the reflection element and / or display and its support with constraints on the reflection and / or display element (ie voltages in the material of the reflection and / or display element) and an attachment between the reflection element and / or d display and its support so as to have a maximum resonant frequency.

According to the present invention, this object is achieved by a display device, in particular for a motor vehicle, comprising a projection module for generating an image for projection in the normal direction of view of a user of the device. display according to an optical path, the display device comprising a reflection element and / or display, the reflection element and / or display being able to be moved between a rest position and at least one position display, the display device comprising a support for the reflection and / or display element such that the reflection and / or display element is moved between its rest position and its at least one position display via the medium, the reflection and / or display element having a main extension direction, and the support and the reflection and / or display element being connected via of an element bearing between the support and the reflection element and / or display such that the reflection element and / or display is retained on both sides along the main extension direction of the reflection element and or display, the reflecting element and / or display traversing - relative to the support - at least partially a rotational movement between its rest and display positions, the bearing element comprising at least one element of the bearing element housing and at least one insert of the bearing element. By such an embodiment of a display device, it is advantageously possible to make a connection between the reflection element and / or display and its support in a simple and inexpensive way. Furthermore, it is advantageously possible according to the present invention to make the link between the reflection element and / or display and its support so as to allow a relative rotational movement with minimal stresses on the reflection element and / or display. It is also advantageously possible to achieve a high resonance frequency regarding the attachment between the reflection element and / or display and its support. Thus, it is advantageously possible that the image - which is projected on the windshield - is visible at any time by the user of the display device when the user drives the motor vehicle.

According to the present invention, it is advantageously possible for the image projected on the windscreen to have no defects or, at least, to have relatively small defects because the voltages in the material of the reflection element and / or display (which can be introduced during relative movements between the reflection element and / or display and its support) are either inexistent or low. Furthermore, it is advantageously possible according to the present invention to take into account thermal expansions of the reflection element and / or display.

Another preferred refinement of the invention resides in the fact that the reflection and / or display element comprises, at a first side along the main extension direction, an end having a spherical surface, and, d a second side, opposite the first side, along the main extension direction, one end having a cylindrical surface, the bearing element carries, on both sides of the reflection and / or display element, a spherical joint between the reflection element and the display and the support. Thus, it is advantageously possible to combine the positive effects of a rotational movement between the reflection element and / or display and its support with minimal constraints on the reflection element and / or display - an attachment between the reflection element and / or display and its support so as to have a maximum resonant frequency, - as well as to allow the reflection element and / or display variations Because of the fact that at the first side of the reflection element and / or the bearing element carries an axial bearing with respect to the support, and that on the second side of the reflection and / or display element, the bearing element provides a radial bearing relative to the support. . By such an embodiment according to the present invention, it is advantageously possible to fix the reflection and / or display element in its axial position on the first side and to allow thermal expansion (that is to say a variation of the length of the reflection element and / or display) of its second side through the radial bearing. According to a variant of the present invention, it is also preferred that the insert of the second side of the reflection and / or display element comprises a spherical outer surface which interacts with a housing element of the housing element. bearing. By such an embodiment according to the present invention, it is advantageously possible to reduce the tensions due to relative movements between the reflection element and / or display and its support.

Another preferred refinement of the invention resides in the fact that the reflection and / or display element is capable of being positioned in a multitude of different display positions.

A preferred development of the invention lies in the fact that between the different display positions of the reflection element and / or display, the reflection element and / or display is subjected to a rotary movement and / or translational. Yet another preferred development of the invention lies in the fact that the reflection element and / or display is driven between its rest position and its at least one display position via a motor element or an actuator element. Other features and advantages of the invention will become apparent from reading the following description of a particular non-limiting embodiment of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS The invention will be better understood thanks to the following description, which refers to preferred embodiments given by way of non-limiting example and explained with reference to the appended diagrammatic drawings, in which FIG. is a schematic sectional view of a display device according to the present invention; FIG. 2 is a schematic perspective view of a portion of the display device according to the present invention with the reflection element and / or d 3 is a diagrammatic perspective view of a housing element of the bearing element with an insert of the bearing element, FIG. 4 is a diagrammatic perspective view of the housing element. of the housing element of the bearing element with the insert of the bearing element, and with the second side of the reflection and / or display element, Figure 5 is a schematic sectional view of d the housing element of the bearing element with the insert of the bearing element, and with the second side of the reflection and / or display element, FIG. 6 is another schematic view of section of the housing element of the bearing element with the insert of the bearing element, and with the second side of the reflection and / or display element, FIG. 7 is a schematic view of perspective of a part of the display device according to the present invention with the reflection element and / or display and with the bearing element, Figure 8 is a schematic perspective view of another housing element of the bearing element with another insert of the bearing element, and with the first side of the reflection and / or display element, FIG. 9 is a schematic sectional view of the other element of the bearing element. housing of the bearing element with the other insert of the bearing element, and with the first side of the reflection and / or display element, FIG. 10 is a schematic perspective view of the other housing element of the bearing element with the first side of the reflection and / or display element Fig. 11 is a schematic sectional view of the other housing element of the bearing element with the other insert of the bearing element and with the first side of the reflection element and / or 12 is a diagrammatic perspective view of the insert of the bearing element, and FIG. 13 is a diagrammatic perspective view of the other insert of the bearing element. DESCRIPTION OF THE DRAWINGS As shown in FIG. 1, a display device 10 according to the present invention comprises a projection module 11 which generates an image in the normal viewing direction of a user of the display device 10 according to an optical path 12 The optical path 12 normally comprises at least one In this way, the optical path 12 may comprise a (single) reflection element, as shown in FIG. 1. Moreover, the optical path 2 may also comprise two elements of reflection. The display device 10 can be made with either a reflection element 13 or a display element (such as for example a Thin Film Transistor), or with a reflection element. The normal viewing direction 15 is the direction of view of a user of the display device 10, in particular a vehicle driver, when the latter is looking, in particular through a windshield 14, at the outside. in front of the vehicle.

According to the present invention, the reflection and / or display element 13 is an element positioned at a distance from the windshield 14. According to the present invention, the reflection and / or display element 13 may be positioned in a rest position and in at least one display position. When the reflection element and / or display 13 is positioned in its rest position, the reflection element and / or display 13 is for example positioned inside a housing of the display device 10. When the reflection and / or display element 13 is positioned in its display position, the reflection and / or display element 13 is typically positioned upright or almost vertically or inclined so that the user of the display device can look through the reflection and / or display element 13. The change of position of the home position and the display position of the reflection element and / or display 13 is made through a rotary movement and / or translation of the reflection element and / or display 13.

Different positions of the reflection element and / or display 13 can correspond to different display positions and can be adapted to different heights of the user's head. The reflection and / or display element 13 is typically driven by a motor element or an actuator element, either directly or through a transmission element. The driving element may in particular be a linear motor element or a rotary motor element, in particular an electric motor element with a pitch. According to the present invention, a support 16 is associated with the reflection and / or display element 13. The support 16 may form part of the display unit housing 10, or the support may be driven between different positions, especially via the motor element, and drives the reflection element and / or display 13. According to the present invention, the movement of the reflection element and / or display 13 between its rest position and its display position implies a relative movement between the reflection and / or display element 13 and the support 16. According to the present invention, a bearing element 17 is provided between the support 16 and the reflection and / or display element 13. In FIG. 2, a perspective view of a part of the display device 10 with the reflection and / or display element 13 and with the Bearing element 17 is shown schematically. The reflection and / or display element 13 has a main extension direction, and the bearing element 17 connects the support 16 with the reflection element 20 and / or display element 13 such that the element of reflection and / or display 13 is retained on both sides along the main extension direction of the reflection and / or display element 13. Preferably according to the present invention, the reflection element and / or or display 13 comprises, on a first side along the main extension direction, an end having a spherical surface, and, on a second side, opposite the first side, along the main extension direction an end having a cylindrical surface. The bearing element 17 carries, on both sides of the reflection and / or display element 13, a spherical articulation between the reflection and / or display element 13 and the support 16. FIG. also the driving element or the actuator element 18 schematically. In Fig. 3, a perspective view of a housing member 19 of the bearing member 17 with an insert 21 of the bearing member 17 is schematically shown. The insert 21 comprises fin elements 20. The insert 21 - especially via its fin elements 20 - is in contact with the second side of the reflection element 35 and / or display 13. This is also shown schematically in Figure 4.

Figures 5 and 6 schematically show sectional views of the housing member 19 of the bearing member 17 with the insert 21 of the bearing member, and with the second side of the reflection member and or display 13 which has a cylindrical surface. Between the insert 21 and the housing member 19 of the bearing member 17 is a surface (ie the outer surface of the insert 21) spherical 22 which corresponds to a friction surface between the insert 21 and the housing member 19 of the bearing element 17. Thus, it is advantageously possible according to the present invention that the second side of the reflection and / or display element 13 is allowed to move as illustrated by the arrows 13 'as illustrated in Figure 6. The contact areas between the second side of the reflection element and / or display 13 and the fin elements 20 are indicated by the sign of 23. In Fig. 7, a perspective view of a part of the display device 10 according to the present invention with the reflection and / or display element 13 and with the bearing element 17 is schematically shown. . In FIG. 8, a perspective view of another housing element of the bearing element 17 with another insert 24 of the bearing element 17, and with the first side of the reflection element and / or 17 is schematically shown.

In FIG. 9, a sectional view of the other housing element of the bearing element 17 with the other insert 24 of the bearing element 17, and with the first side of the reflection element and / or display 17 is schematically shown.

In Fig. 10, a perspective view of the other housing member of the bearing member 17 with the first side of the reflection and / or display member 13 is schematically shown. FIG. 11 schematically shows a sectional view of the other housing element of the bearing element 17 with the other insert 24 of the bearing element 17 and with the first side of the reflection element and / or 13. It is visible in Figure 11 that the other insert 24 comprises a retaining element 25 which prevents the first side of the reflection element and / or display 13 from leaving the other insert 24. Thus, the reflection and / or display element 13 is held in its axial position along the main extension direction of the reflection and / or display element 13 (that is to say between the first side and the second side of the reflection element and / or display 13).

FIG. 12 shows a schematic perspective view of the other insert 24 of the bearing element 17, and FIG. 13 shows a schematic sectional view of the other insert 24 of the bearing element 17 with the element. retainer 25.

List of reference signs 10 display device 11 projection module 12 optical path 13 reflection and / or display element 13 'allowable movement directions of the second side of the reflection and / or display element 14 breeze normal viewing direction 16 support 17 bearing element 18 motor element 15 19 housing element of bearing element fin elements 21 insert 22 spherical surface of insert 23 contact points between second side of element reflection and / or display 20 and the fin elements 24 further insert retainer

Claims (7)

REVENDICATIONS1. Display device (10), in particular for a motor vehicle, comprising a projection module (11) for generating an image for projection in the normal viewing direction (15) of a user of the display device ( 10) according to an optical path (12), the display device (10) comprising a reflection and / or display element (13), the reflection and / or display element (13) being capable of be moved between a rest position and at least one display position, the display device (10) comprising a support (16) for the reflection and / or display element (13) such as the reflection and / or display element (13) is moved between its rest position and its at least one display position via the support (16), the reflection and / or display element ( 13) having a main extension direction, and the support (16) and the reflection and / or display element (13) being connected via the of a bearing element (17) between the support (16) and the reflection and / or display element (13) such that the reflection and / or display element (13) is retained two sides along the main extension direction of the reflection and / or display element (13), the reflecting and / or displaying element (13) traveling - relative to the support (16) - to the least partially rotational movement between its rest and display positions, characterized in that the bearing element (17) comprises at least one housing element (19) of the bearing element (17) as well as at least one insert (21) of the bearing element (17). 2. Display device (10) according to claim 1, characterized in that the reflection and / or display element (13) comprises, at a first side along the main extension direction, an end having a spherical surface, and a second side opposite to the first side, along the main extension direction, one end having a cylindrical surface, the bearing member (17) providing on both sides of the reflection and / or display member (13), a spherical joint between the reflection and / or display element (13) and the support (16). Display device (10) according to one of the preceding claims, characterized in that at the first side of the reflection and / or display element (13) the bearing element (17) carries out an axial bearing relative to the support (16), and at the second side of the reflection and / or display element (13), the bearing element (17) provides a radial bearing relative to the support (16). 4. 10 5. 15 6. 20 7. Display device (10) according to any one of the preceding claims, characterized in that the insert of the second side of the reflection and / or display element (13) comprises a spherical outer surface which interacts with a housing member (19) of the bearing member (17). Display device (10) according to one of the preceding claims, characterized in that the reflection and / or display element (13) can be positioned in a multitude of different display positions. Display device (10) according to one of the preceding claims, characterized in that between the different display positions of the reflection and / or display element (13), the reflection element and or display (13) is subjected to a rotary and / or translational movement. Display device (10) according to any one of the preceding claims, characterized in that the reflection and / or display element (13) is driven between its rest position and its at least one display position via a motor element (18).