Display system for a vehicle and related vehicle

Abstract

The invention relates to a display system (15) comprising a protective lens forming a display surface (S), a device (16) emitting a plurality of incident light beams into a vehicle (10) intended for a user (12) of said vehicle (10), said display system (15) further comprising an optical filter film arranged between said device (16) and said protective lens, said device (16) having a normal axis (N) orthogonal to said display surface (S) and a pitch axis (E) pointing from a bottom to a top of said device (16), said normal axis (N) and said pitch axis (E) forming a viewable plane, said optical filter film being configured to prevent a light ray incident onto the optical filter film and forming an angle of incidence greater than a predetermined filter angle with respect to the normal axis (N) in the viewable plane from exiting the display system (15).

Description

Technical Field

[0001] This invention relates to a display system for vehicles and related vehicles.

[0002] This invention relates to the field of display systems, and more specifically, to display systems suitable for integration into transport vehicles (especially motor vehicles). Background Technology

[0003] As is well known, modern motor vehicles are equipped with multiple luminous devices, such as displays, for example, used to show various driving-related information and / or multimedia infotainment content. Therefore, these displays assist the driver in operating the vehicle and enhance the comfort of the driver and passengers during the journey.

[0004] Naturally, these devices emit light to perform these functions.

[0005] However, this light can reflect off the vehicle's windshield and significantly distract the driver, especially at night.

[0006] The first existing solution to this problem was to use a trim piece mounted above the device to block the light emitted by the device toward the windshield. However, this solution takes up space in the vehicle's passenger compartment and is not aesthetically pleasing.

[0007] A second existing solution involves tilting the display device at an angle or moving it further away from or closer to the driver's seat during the assembly of the vehicle's passenger compartment to avoid such light reflection on the windshield. However, this tilting or increase / decrease in distance may make the information displayed on the device less visible and imposes additional constraints on manufacturers when designing vehicles.

[0008] Therefore, there is a need to provide a display system that avoids the reflection of light emitted by the display device on the vehicle windshield while keeping the brightness of the display device constant, with the aim of making driving safer. Summary of the Invention

[0009] The purpose of this invention is to provide a display system that meets the above requirements.

[0010] For this purpose, the present invention provides a display system comprising a protective lens forming a display surface, a device for emitting a plurality of incident light rays into a vehicle, the device being configured to display at least one piece of information to a user of the vehicle, and an optical filter film disposed between the device and the protective lens.

[0011] The device has a normal axis orthogonal to the display surface and a pitch axis pointing from the bottom to the top of the device, the normal axis and the pitch axis forming a viewing plane.

[0012] The optical filter is configured to prevent light rays incident on the optical filter from exiting the display system at an incident angle greater than a predetermined filtering angle relative to the normal axis in the visible plane.

[0013] With the proposed arrangement, the incident light emitted by the device is fully visible to the user, and the optical filter film filters out incident light that may be reflected by the vehicle's windshield.

[0014] According to other advantageous aspects of the invention, the display system, alone or in any technically feasible combination, includes one or more of the following features:

[0015] -The device is a vehicle display screen;

[0016] - The display system includes two optically transparent adhesive layers, each having a predetermined thickness. The first layer is suitable for assembling the optical filter and the protective lens, and the second layer is suitable for assembling the vehicle display screen and the optical filter.

[0017] - The device includes at least one indicator light, which is configured to emit a plurality of incident light rays;

[0018] - The display system includes an optically transparent adhesive layer suitable for assembling the optical filter and the protective lens;

[0019] - The display surface forms a predetermined angle with the plane formed by the vehicle display screen, the predetermined angle being configured based on the tilt angle between the axis of the vehicle's windshield and the horizontal axis of the vehicle;

[0020] - The predetermined filter angle is between 30° and 60°;

[0021] The display system includes a decorative layer disposed between the device and the optical filter film, the decorative layer being visible to the user when the device is off and invisible to the user when the device is on; and

[0022] - The optical filter film is a thin, flexible film with a thickness between 100 micrometers and 200 micrometers.

[0023] The present invention also relates to a receiver comprising such a display system. Attached Figure Description

[0024] The invention will become clearer from the following description, given only by way of non-limiting example and with reference to the accompanying drawings, in which:

[0025] [ Figure 1 ] Figure 1 This is a schematic diagram of a vehicle including the display system according to the present invention;

[0026] [ Figure 2 ] Figure 2 This is a cross-sectional view of a display system according to a first embodiment of the present invention;

[0027] [ Figure 3 ] Figure 3 It is a front view of a display device equipped with a display unit; and

[0028] [ Figure 4 ] Figure 4 This is a cross-sectional view of a display system according to a second embodiment of the present invention. Detailed Implementation

[0029] Figure 1 A portion of the vehicle 10 is shown schematically in outline, including a horizontal axis H parallel to the ground.

[0030] Vehicle 10 is preferably a motor vehicle, such as, for example, a car, truck, or bus.

[0031] Figure 1 The vehicle 10 is also shown with a user 12, represented by one of their eyes, looking along the observation axis V.

[0032] User 12 is, for example, the driver of vehicle 10 or a front-seat passenger of vehicle 10.

[0033] Vehicle 10 is equipped with a windshield 14 facing the user 12. The windshield 14 follows the windshield axis B, intersects the horizontal axis H, and thus forms a tilt angle. ,like Figure 1 As shown.

[0034] The vehicle 10 includes a display system 15, which includes a display device 16 that emits multiple incident light beams and is configured to display at least one piece of information to the user 12.

[0035] According to a first embodiment of the present invention, device 16 is a display screen of vehicle 10.

[0036] The display screen is, for example, a liquid crystal display (LCD), especially a TFT-LCD type.

[0037] Then, the display screen forms the surface of device S' and extends vertically along the axis A of the device.

[0038] For example, device 16 is a display screen located on the dashboard of vehicle 10.

[0039] The display system 15 also includes a display device 18.

[0040] The display device 18 is positioned on the device 16 so as to cover the entire surface of the device S'.

[0041] Preferably, according to this first embodiment of the invention, the display device 18 has a geometry similar to that of the device 16.

[0042] For example, device 16 is a display screen with a parallelepiped shape, and therefore display device 18 also has a parallelepiped shape.

[0043] Display system 15 (its implementation scheme is as follows) Figure 2 and Figure 4 (As shown in the figure) It includes a protective lens 20 and an optical filter 22.

[0044] Figure 2 The first implementation scheme is shown in the figure.

[0045] The protective lens 20 is designed to protect the device 16 from potential external damage, such as scratches or impacts.

[0046] The protective lens 20 has a predetermined thickness that is advantageously between 1 mm and 2.5 mm.

[0047] The optical filter 22 forms a light guide with a predetermined filtering angle. For example, the optical filter 22 is produced using an adhesive method (such as lamination).

[0048] Preferably, the optical filter film 22 is a flexible film with a thickness between 100 and 200 μm. For example, the film is a transparent plastic film, such as one made of optical grade polycarbonate (PC) or polymethyl methacrylate (PMMA).

[0049] refer to Figure 3 The first arrangement of the components of the display system 15 is disclosed.

[0050] To illustrate the first arrangement of the various components forming the display system 15, a reference frame is used. like Figure 3 As shown, where It is the center of display system 15, and These are the three direction vectors in each of the three dimensions of the space shown.

[0051] Without loss of generality, we assume Multiple incident rays emitted by device 16 The point of incidence. Also assume that this point... As observed by user 12, and the observed axis V therefore passes through... .

[0052] Protective lens 20 in plane A display surface S is formed in the middle, and along the axis The parallel pitch axis E extends vertically and coincides with the axis A of the equipment. According to this first arrangement, therefore... Figure 1 The angle shown It is zero.

[0053] The protective lens 20 also includes a normal axis N orthogonal to the display surface S. .

[0054] Furthermore, the normal axis N and the pitch axis E form a visible plane P= This includes observing the axis V and the incident light. ,like Figure 3 As shown.

[0055] In order to Figure 3 The drawing of the visible plane P is clear, defining two axes N' and N'', both parallel to the normal axis N, and respectively in the direction and Translate upwards.

[0056] like Figure 2 As shown, the optical filter 22 is positioned between the protective lens 20 and the device 16.

[0057] Advantageously, the protective lens 20 and the optical filter 22 are bonded by a first layer of optically transparent adhesive 24, and the optical filter 22 and the device 16 are bonded by a second layer of optically transparent adhesive 24.

[0058] Even more advantageously, each optically transparent adhesive layer has a predefined thickness between 25 micrometers and 75 micrometers.

[0059] In this way, the optical filter 22 also extends along the pitch axis E.

[0060] Additionally, and referring to Figure 3 The optical filter 22 is suitable for filtering incident light emitted by the device 16. The incident ray forms an incident angle greater than a predetermined filtering angle relative to the normal axis N in the visible plane P. hereinafter referred to as .

[0061] "Filtering incident light" is understood to mean preventing light incident on the optical filter film 22. The light emitted from the display system 15 forms a shape greater than the normal axis N in the visible plane P. or less angle of incidence .

[0062] According to this operation, if Then the incident ray And as a result, at least one piece of information displayed by device 16 is visible to user 12, and if Then it will not be visible to user 12.

[0063] In addition, it is preferable to select a predetermined filter angle. , so that if Then the incident ray It cannot be reflected on the windshield 14 of vehicle 10.

[0064] Advantageously, the predetermined filter angle Between 30° and 60°.

[0065] Therefore, refer to Figure 3 In the example, the incident light emitted by device 16 In the middle, only the incident light Visible to user 12, light It is filtered by optical filter film 22.

[0066] Therefore, advantageously, the device 16 at the incident point Incident light emitted from the point Neither of them can be reflected on the windshield 14 of vehicle 10.

[0067] According to the alternative arrangement, the display device 18 is mounted on the device 16 such that the pitch axis E of the protective lens 20 forms a predetermined angle that is strictly positive with the device axis A. ,like Figure 1 As shown.

[0068] According to this alternative, when the display device 18 is assembled on the device 16, the predetermined angle Based on tilt angle Make a selection.

[0069] Specifically, the display device 18 is assembled on the device 16 based on a model of the vehicle 10.

[0070] For example, vehicle 10 is a sports car, which typically has a tilt angle between 30° and 50°. Pre-determined angle It is approximately ten degrees.

[0071] According to another example, vehicle 10 is a pickup truck, which typically has a tilt angle between 60° and 80°. The selected predetermined angle How many degrees?

[0072] The following reference Figure 4 The description shows a second implementation of system 15.

[0073] According to this second embodiment of the invention, device 16 includes at least one indicator light that emits a plurality of incident rays.

[0074] An indicator light may be one or more LEDs.

[0075] Then, the display device 18 is positioned to cover the entire surface of at least one indicator light of the device 16 in order to filter incident light emitted by the device 16 that can be reflected on the windshield 14 of the vehicle 10.

[0076] The display device 18 is also positioned at a predetermined distance from at least one indicator light of the device 16, the predetermined distance being selected based on several parameters inherent to the device 16.

[0077] For example, when device 16 emits light with high luminous intensity, display device 18 is positioned at a predetermined shorter distance from device 16, and if device 16 emits light with low luminous intensity, display device 18 is positioned at a predetermined longer distance.

[0078] According to this second embodiment of the invention, the display device 18 includes a protective lens 20 and an optical filter film 22 bonded together by a single layer of optically transparent adhesive 24, such as Figure 4 As shown.

[0079] In addition, the optically transparent adhesive layer 24 has a predetermined thickness between 25 micrometers and 75 micrometers.

[0080] As an optional addition, the display device 18 according to any embodiment of the present invention further includes a decorative layer disposed between the device 16 and the optical filter film 22.

[0081] The decorative layer is used to display a set of decorative patterns when device 16 is off. When device 16 is on, the decorative layer is made invisible to user 12.

[0082] Independent of the addition of the decorative layer disclosed above, the display system 15 maintains its filtering characteristics for incident light emitted by the device 16 via the optical filter 22, according to the incident angle of the incident light as described in the previous arrangement.

[0083] In short, the display system 15, including the display device 18 according to the implementation scheme described above, ensures that all incident light emitted by the device 16 is not reflected on the windshield 14 of the vehicle 10, without having to implement additional systems that impose strict space and / or technical limitations when designing the passenger compartment of the vehicle 10.

[0084] Furthermore, the display device 18 enables this function to be achieved without reducing the luminous intensity of the light beam emitted by the device 16. In fact, it has... and angle of incidence between The incident light is not attenuated or filtered by the optical filter 22. Therefore, the user 12 cannot see the difference between the display screen equipped with such a display device 18 and his own display screen.

Claims

1. A display system (15) comprising a protective lens (20) forming a display surface (S), a device (16) for emitting a plurality of incident light rays into a vehicle (10), the device (16) being configured to display at least one piece of information to a user (12) of the vehicle (10), the display system further comprising an optical filter (22) disposed between the device (16) and the protective lens (20). The device (16) has a normal axis (N) orthogonal to the display surface (S) and a pitch axis (E) pointing from the bottom to the top of the device (16), the normal axis (N) and the pitch axis (E) forming a visible plane (P). Its features are, The optical filter (22) is configured to prevent light rays incident on the optical filter (22) and forming an incident angle greater than a predetermined filtering angle relative to the normal axis (N) in the visible plane (P) from exiting the display system (15).

2. The display system (15) according to claim 1, wherein, The device (16) is a vehicle display screen (10).

3. The display system (15) according to claim 2 further comprises two optically transparent adhesive layers (24), each having a predetermined thickness, the first layer being adapted to assemble the optical filter (22) and the protective lens (20), and the second layer being adapted to assemble the vehicle display screen (10) and the optical filter (22).

4. The display system (15) according to claims 1 to 3, wherein, The device (16) includes at least one indicator light, which is configured to emit a plurality of incident rays.

5. The display system (15) according to claim 4 further includes an optically transparent adhesive layer (24) suitable for assembling the optical filter (22) and the protective lens (20).

6. The display system (15) according to any one of claims 2 to 5, wherein, The display surface (S) forms a predetermined angle with the plane (S') formed by the vehicle display screen, the predetermined angle being configured based on the tilt angle between the axis (B) along the windshield (14) of the vehicle (10) and the horizontal axis (H) of the vehicle (10).

7. The display system (15) according to any one of the preceding claims, wherein, The predetermined filter angle is between 30° and 60°.

8. The display system (15) according to any one of the preceding claims further includes a decorative layer disposed between the device (16) and the optical filter film (22), the decorative layer being visible to the user (12) when the device (16) is off and invisible to the user (12) when the device (16) is on.

9. The display system (15) according to any one of the preceding claims, wherein, The optical filter film (22) is a flexible film with a thickness between 100 micrometers and 200 micrometers.

10. A vehicle (10) comprising a display system (15) according to any one of the preceding claims.

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