Head-up display for vehicle and vehicle

Abstract

The present disclosure relates to a head-up display (100) for a vehicle, characterized in that the head-up display (100) has: a backlight-type screen (102) having a first region for displaying an image and a second region surrounding the first region; an optical system for projecting images of the first and second regions onto a windshield (105) of a vehicle; a correction structure for correcting distortion of an image in a second area on the windshield (105); the outer frame of the corrected image (110) of the second area on the windshield (105) is rectangular; wherein the correction structure has a correction region (111) for the transmission of light, the correction region (111) having a quadrilateral boundary. The disclosure also relates to a vehicle.

Description

Technical Field

[0001] This disclosure relates to a head-up display for a vehicle and the vehicle. Background Technology

[0002] Head-up displays (HUDs) are increasingly used in vehicles, projecting information such as navigation and vehicle speed onto the windshield in front of the driver's line of sight using optical technology. This not only reduces the time the driver's eyes are off the road, significantly reducing driver distraction, lowering the risk of accidents, and improving driving safety, but also provides drivers with a new driving experience.

[0003] A head-up display mainly consists of two parts: a screen and an optical system. The screen displays the projected image, while the optical system is used to change the light path and magnify the projected image.

[0004] Currently, the TFT screens commonly used in head-up display designs have material properties that allow backlight to pass through the screen even when the image is completely black, thus creating a background frame around the displayed image (also known as the postcard effect). Furthermore, due to the magnification effect of the optical system, this background frame also undergoes a certain degree of distortion, resulting in an irregularly shaped background displayed to the user. This significantly impacts the user experience.

[0005] The distorted background frame cannot be improved by commonly used techniques in the existing technology, such as local dimming or software pre-distortion.

[0006] Furthermore, in multi-model platform design schemes, the goal is to reuse as many components as possible. However, due to differences in the geometric data of each model, the final postcard effect exhibits significant shape variations. Therefore, it is also necessary to ensure that the platform design scheme reuses as many components as possible, using the fewest possible variations to address the postcard shape differences between models. Utility Model Content

[0007] This disclosure aims to provide a head-up display for a vehicle and a vehicle that at least partially solves the problems described above.

[0008] This disclosure now proposes a head-up display for a vehicle and a vehicle that overcomes the aforementioned disadvantages and brings other technical effects by adopting the following technical features.

[0009] According to a first aspect of this disclosure, a head-up display for a vehicle is proposed, the head-up display having:

[0010] A backlit screen has a first area for displaying an image and a second area surrounding the first area;

[0011] An optical system for projecting images of the first and second regions onto the windshield of a vehicle;

[0012] A correction structure for correcting the distortion of the image in the second region on the windshield;

[0013] The outer frame of the image of the second region on the windshield after correction is rectangular;

[0014] The correction structure has a correction region for light transmission, and the correction region has a quadrilateral boundary.

[0015] In some embodiments, the first and second sides of the boundary are opposite to each other in a first direction and are offset from each other in a second direction perpendicular to the first direction, wherein the third and fourth sides of the boundary are designed to be curved in the same manner and connect the first and second sides respectively.

[0016] In some embodiments, the correction structure is constructed as a frame that covers the screen and exposes a portion of the screen through an opening in the frame, the shape of which corresponds to the shape of the correction area.

[0017] In some embodiments, the first sidewall inside the frame forms the first side of the correction region, the second sidewall forms the second side of the correction region, the third sidewall forms the third side of the correction region, and the fourth sidewall forms the fourth side of the correction region, wherein the first sidewall and the second sidewall are designed to be straight and parallel to each other.

[0018] In some embodiments, the correction structure is configured as a cover plate that is attached to the screen, the cover plate having a first light-transmitting area and the shape of the first light-transmitting area corresponding to the shape of the correction area.

[0019] In some embodiments, the optical system has a first-stage mirror, wherein the correction structure is designed as a first reflecting surface on the first-stage mirror, the shape of the first reflecting surface corresponding to the shape of the correction region, wherein the first side and the second side of the correction region gradually move away from each other in a second direction.

[0020] In some embodiments, the optical system has a second-stage mirror, and the correction structure is designed as a second reflecting surface on the second-stage mirror.

[0021] In some embodiments, the shape of the second reflective surface corresponds to the shape of the correction region, wherein the first and second sides of the correction region are designed to be straight and parallel to each other.

[0022] In some embodiments, the head-up display has a dust cover through which the image is projected onto the windshield.

[0023] In some embodiments, the dust cover has a second light-transmitting area, the shape of which corresponds to the shape of the correction area, wherein the first and second sides are designed to be curved in the same manner, and the third and fourth sides gradually move away from each other in a first direction.

[0024] According to a second aspect of this disclosure, a vehicle is proposed having a head-up display for a vehicle as described in any of the foregoing contents of this disclosure.

[0025] The preferred embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings so that the features and advantages of the present disclosure can be readily understood. Attached Figure Description

[0026] To more clearly illustrate the technical solutions of the embodiments of this disclosure, the accompanying drawings of the embodiments of this disclosure will be briefly described below. The drawings are merely illustrative of some embodiments of this disclosure and are not intended to limit all embodiments of this disclosure to them.

[0027] Figure 1 A side view of the arrangement of a head-up display in a vehicle and its schematic diagram are shown.

[0028] Figure 2 This illustrates the uncorrected postcard effect produced in a head-up display;

[0029] Figure 3 This illustrates the corrected postcard effect produced in a head-up display;

[0030] Figure 4 The shape of the correction region of the correction structure is shown;

[0031] Figure 5 A perspective view of a frame constructed as a correction structure according to the present disclosure is shown;

[0032] Figure 6 A top view of a cover plate constructed as a correction structure according to this disclosure is shown;

[0033] Figure 7 A top view of a first-stage reflector configured as a correction structure according to this disclosure is shown;

[0034] Figure 8 A top view of a second-stage reflector configured as a correction structure according to this disclosure is shown;

[0035] Figure 9 A top view of a dust cover constructed as a correction structure according to this disclosure is shown.

[0036] List of reference numerals

[0037] 100-degree head-up display

[0038] 102 screens

[0039] 103 First-stage reflector

[0040] 104 Second-stage reflector

[0041] 105 windshield

[0042] 106 virtual image

[0043] 107 Eyes

[0044] Image of the first area of ​​108

[0045] 109 Uncorrected images of the second region

[0046] Image of the second region after 110 correction

[0047] 111 calibration area

[0048] 112 First side

[0049] 113 Second side

[0050] 114 Third side

[0051] 115 Fourth side

[0052] 116 frame

[0053] 117 Fixed Components

[0054] 118 First sidewall

[0055] 119 Second Side Wall

[0056] 120 Third sidewall

[0057] 121 Fourth sidewall

[0058] 122 cover plate

[0059] 123 First light-transmitting area

[0060] 124 First Reflecting Surface

[0061] 125 Second Reflector

[0062] 126 dust cover

[0063] 127 Second Light Transmitting Area

[0064] X First Direction

[0065] Y second direction Detailed Implementation

[0066] To make the objectives, technical solutions, and advantages of this disclosure clearer, the technical solutions of the embodiments of this disclosure will be clearly and completely described below with reference to the accompanying drawings. The same reference numerals in the drawings represent the same components. It should be noted that the described embodiments are only some, not all, of the embodiments of this disclosure. All other embodiments obtained by those skilled in the art based on the described embodiments of this disclosure without creative effort are within the scope of protection of this disclosure.

[0067] Compared to the embodiments shown in the accompanying drawings, feasible embodiments within the scope of this disclosure may have fewer components, other components not shown in the drawings, different components, components arranged differently, or components with different connections, etc. Furthermore, two or more components in the drawings may be implemented in a single component, or a single component shown in the drawings may be implemented as multiple separate components.

[0068] Unless otherwise defined, the technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art to which this disclosure pertains. The terms “first,” “second,” and similar terms used in this patent application specification do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Similarly, the terms “an” or “a” and similar terms do not necessarily indicate a quantity limitation. The terms “comprising” or “including” and similar terms mean that the element or object preceding the word encompasses the element or object listed following the word and its equivalents, without excluding other elements or objects. The terms “connected” or “linked” and similar terms are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. The terms “upper,” “lower,” “left,” and “right” are used only to indicate relative positional relationships, which may change accordingly when the absolute position of the described object changes.

[0069] Figure 1 A side view and schematic diagram of the arrangement of the head-up display 100 in a vehicle are shown. Figure 1The image shows a portion of the vehicle, specifically the front area, where the front of the vehicle, steering wheel, and windshield 105 are visible. A head-up display 100 is installed in this area, specifically inside the vehicle's center console. The head-up display 100 has a screen 102 on which an image is projected sequentially by light onto a first-stage reflector 103 and a second-stage reflector 104, and then onto the windshield 105 via the second-stage reflector 104. The driver's eyes 107 can see a virtual image 106 of this image through the windshield 105. During this process, the light transmission path... Figure 1 The image is represented by a trapezoidal symbol starting from screen 102 and a triangular symbol from the driver's eyes 107 to the virtual image 106. The head-up display 100 projects information such as navigation and vehicle speed onto the windshield in front of the driver's line of sight using optical technology. This not only reduces the time the driver's eyes are off the road, significantly reducing driver distraction, lowering the risk of accidents, and improving driving safety, but also provides the driver with a new driving experience.

[0070] The head-up display 100 typically has a backlit screen 102, such as a thin-film transistor (TFT) screen. Due to the inherent material properties, backlight can still pass through the screen even in complete darkness, thus forming a background frame around the displayed image. In other words, the screen 102 can be described as having a first area for displaying the image and a second area surrounding the first area. The optical system of the head-up display 100 projects the images of both the first and second areas onto the vehicle's windshield. This allows the driver to see not only images of navigation, vehicle speed, and other information, but also the image of the background frame surrounding these information images. Because this display is similar to the design of a common postcard, it is also known as the postcard effect.

[0071] In a head-up display (HUD), the image on screen 102 is distorted after being reflected by the first and second stage mirrors. Consequently, the background frame in this postcard effect is also distorted, so drivers often see irregular or oddly shaped background frames, which leads to a poor driving experience and can sometimes even be distracting. This significantly diminishes the convenience offered by HUD technology. Figure 2 This illustrates the display content seen by the driver through the windshield in this configuration, namely, in addition to the image 108 of the first area of ​​screen 102, he also sees a distorted, asymmetrical, and uncorrected image 109 of a second area surrounding the image 108 of the first area. In some embodiments, the first-stage reflector is, for example, a plane mirror. The second-stage reflector is, for example, a curved mirror.

[0072] According to this disclosure, the head-up display 100 has a correction structure that corrects the distortion of an uncorrected image 109 of a second region on the windshield 105. Using the correction structure according to this disclosure, the uncorrected image 109 of the second region on the windshield 105 can be corrected into a regular shape, such as a rectangle. That is, the outer frame of the corrected image 110 of the second region displayed on the windshield 105 is rectangular, such as... Figure 3 As shown. Figure 4 As shown, the correction structure has a correction region 111 for light transmission, in which light can be reflected or passed through. Furthermore, the correction region 111 can also be a light-emitting area, specifically the display surface of the screen 102 itself. It can also be seen in the figure that the correction region has a quadrilateral boundary.

[0073] from Figure 4 As can be seen in the figure, the first side 112 and the second side 113 of the quadrilateral's boundary are opposite each other in the first direction X and are offset from each other in the second direction Y, which is perpendicular to the first direction X. In the case shown in the figure, the second side 113 is offset upwards relative to the first side 112, that is, the two ends of the second side 113 in the Y direction are respectively higher than the two corresponding ends of the first side 112. It can also be seen in the figure that the other two sides of the quadrilateral's boundary, the third side 114 and the fourth side 115, are designed to bend in the same way and connect the first side 112 and the second side 113 respectively. The third side 114 and the fourth side 115 are bent in the same way, that is, in the example shown in the figure, both bend downwards.

[0074] Figure 5 A frame 116 configured as a correction structure according to the present disclosure is shown, the frame 116 covering the screen 102. Figure 5 The frame 116 shown has a total of four fixing parts 117 on its two opposite short sides, which are designed as snap-fit ​​connections for securing the frame 116 to the screen 102 or its support. A portion of the screen 102 protrudes from an opening in the frame 116, meaning that light emitted from the screen 102 is emitted outwards through this opening. The shape of the opening corresponds to the shape of the correction area 111.

[0075] The opening is formed by the side walls inside the frame, namely the first side wall 118, the second side wall 119, the third side wall 120, and the fourth side wall 121. The first side wall 118 forms the first side 112 of the correction area 111, the second side wall 119 forms the second side 113 of the correction area 111, the third side wall 120 forms the third side 114 of the correction area, and the fourth side wall 121 forms the fourth side 115 of the correction area. As can be seen in the figure, the first side wall 118 and the second side wall 119 are designed to be straight and parallel to each other.

[0076] Figure 6 A cover plate 122 configured as the correction structure is shown, which can be attached to the screen 102, for example, by adhesive. As shown, the cover plate 122 has a first light-transmitting area 123, and other areas of the cover plate are printed with an opaque material, such as ink. The shape of the first light-transmitting area 123 corresponds to the shape of the correction area 111.

[0077] Other components of the head-up display 100 may also be designed to have the correction structure described in this disclosure. For example... Figure 7 As shown, the optical system of the head-up display has a first-stage reflector 103, on which the image on the screen 102 is projected outwards. The correction structure can be designed as a first reflecting surface 124 on the first-stage reflector 103, the shape of which corresponds to the shape of the correction area. Figure 7 In the figure, the first-stage reflector 103 itself is shown as a rectangle, and the first reflective surface 124 is shown as a light-colored area inside the first-stage reflector 103. Other areas of the first-stage reflector 103 can be treated accordingly, such as by coating, to prevent light reflection. Furthermore, as shown in the figure, the first and second sides of the first reflective surface 124, which are opposite each other along the first direction X, are not parallel to each other in this design, but gradually move away from each other along the second direction Y.

[0078] Figure 8 The image shows a second-stage reflector 104 of the optical system of the head-up display 100. A first-stage reflector 103 projects an image onto the second-stage reflector 104 to magnify the image. The correction structure is designed as a second reflective surface 125 on the second-stage reflector 104.

[0079] exist Figure 8In the diagram, the second reflective surface 125 is shown as a light-colored area inside the second-stage reflector 104. Other areas of the second-stage reflector 104 can be treated accordingly, such as by coating, to prevent light reflection. The shape of the second reflective surface 125 corresponds to the shape of the correction region 111, wherein the first and second sides of the correction region 111 are here two short sides of the second reflective surface 125 that are inclined relative to the second direction Y, and are designed to be straight and parallel to each other.

[0080] The head-up display 100 also has a dust cover 126, which is a transparent structure and can be designed to be arched or flat. Images are projected from the second-stage reflector 104 onto the windshield 105 through the dust cover 126.

[0081] The dust cover 126 has a second light-transmitting area 127, the shape of which corresponds to the shape of the correction area 111. Two opposite sides of the second light-transmitting area 127 in the first direction X correspond to the first and second sides of the correction area 111, and are designed to be curved in the same manner. Two opposite sides of the second light-transmitting area 127 in the second direction Y correspond to the third and fourth sides of the correction area 111, and gradually move away from each other in the first direction X.

[0082] The exemplary implementation of the solution proposed in this disclosure has been described in detail above with reference to preferred embodiments. However, those skilled in the art will understand that various modifications and alterations can be made to the above specific embodiments without departing from the spirit of this disclosure, and various combinations can be made to the various technical features and structures proposed in this disclosure without exceeding the protection scope of this disclosure.

Claims

1. A head-up display (100) for a vehicle, characterized by The head-up display (100) has: The backlit screen (102) has a first area for displaying an image and a second area surrounding the first area; An optical system for projecting images of the first and second regions onto the windshield (105) of the vehicle; A correction structure is used to correct the distortion of the image in the second region on the windshield (105), and the outer frame of the corrected image (110) in the second region on the windshield (105) is rectangular; The correction structure has a correction region (111) for light transmission, and the correction region (111) has a quadrilateral boundary.

2. The head-up display (100) for a vehicle according to claim 1, characterized in that The first side (112) and the second side (113) of the boundary are opposite to each other in a first direction (X) and are offset from each other in a second direction (Y) perpendicular to the first direction. The third side (114) and the fourth side (115) of the boundary are designed to be bent in the same way and connect the first side (112) and the second side (113) respectively.

3. The head-up display (100) for a vehicle according to claim 2, characterized in that The correction structure is constructed as a frame (116) that covers the screen (102) and exposes a portion of the screen (102) through an opening in the frame (116) whose shape corresponds to the shape of the correction area (111).

4. The head-up display (100) for a vehicle according to claim 3, characterized in that The first sidewall (118) inside the frame (116) forms the first side (112) of the correction region (111), the second sidewall (119) forms the second side (113) of the correction region (111), the third sidewall (120) forms the third side (114) of the correction region (111), and the fourth sidewall (121) forms the fourth side (115) of the correction region (111), wherein the first sidewall (118) and the second sidewall (119) are designed to be straight and parallel to each other.

5. The head-up display (100) for a vehicle according to claim 2, characterized in that, The correction structure is constructed as a cover plate (122), which is attached to the screen (102). The cover plate (122) has a first light-transmitting area (123), and the shape of the first light-transmitting area (123) corresponds to the shape of the correction area (111).

6. The head-up display (100) for a vehicle according to claim 2, characterized in that, The optical system has a first-stage mirror (103), wherein the correction structure is designed as a first reflecting surface (124) on the first-stage mirror (103), the shape of the first reflecting surface (124) corresponds to the shape of the correction region (111), wherein the first side (112) and the second side (113) of the correction region (111) gradually move away from each other in the second direction (Y).

7. The head-up display (100) for a vehicle according to claim 2, characterized in that The optical system has a second-stage mirror (104), and the correction structure is designed as a second reflecting surface (125) on the second-stage mirror (104).

8. The head-up display (100) for a vehicle according to claim 7, characterized in that The shape of the second reflective surface (125) corresponds to the shape of the correction area (111), wherein the first side (112) and the second side (113) of the correction area (111) are designed to be straight and parallel to each other.

9. The head-up display (100) for a vehicle according to claim 2, characterized in that, The head-up display (100) has a dust cover (126) through which the image is projected onto the windshield (105).

10. The head-up display (100) for a vehicle according to claim 9, characterized in that The dust cover (126) has a second light-transmitting area (127), the shape of which corresponds to the shape of the correction area (111), wherein the first side (112) and the second side (113) are designed to be curved in the same way, and the third side (114) and the fourth side (115) gradually move away from each other in the first direction (X).

11. A vehicle characterized by comprising: It has a head-up display (100) for a vehicle according to any one of the preceding claims.

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