Dual-system far and near field HUD

Abstract

The embodiment of the utility model belongs to the technical field of automobile parts, and relates to a dual-system far and near field HUD, which comprises a third free-form surface mirror, a first display part and a second display part, and is characterized in that the third free-form surface mirror is positioned on the light path of the first display part and the second display part; and the first display part and the second display part are used for transmitting pictures to the front windshield of the vehicle. Through the arrangement of the first display part and the second display part, the first display part and the second display part are used for transmitting pictures to the front windshield of the vehicle, and due to the characteristic that the front windshield is inclined, the eyes of a driver can see two pictures with different distances at the same time; the third free-form surface mirror is located on the light paths of the first display part and the second display part, that is, the first display part and the second display part can share the third free-form surface mirror, so that the occupied space is reduced, and the space occupied by the HUD system in the whole vehicle is saved.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile accessories, and more specifically, to a dual-system far-field and near-field HUD. Background Art

[0002] HUD head-up display, abbreviated as HUD, also known as the head-up display system, is a driver-centric, blind-operated, multi-function dashboard technology. HUD uses the principle of optical reflection to project important information onto the windshield in front of the driver or a dedicated HUD display. In the automotive field, the HUD system can project key information such as vehicle speed, navigation information, and vehicle status onto the windshield in front of the driver in real time, so that the driver can obtain the required information without having to look down at the dashboard or central control screen during driving, thereby improving driving safety and comfort.

[0003] For example, a Chinese patent (publication number: CN211014860U) discloses a HUD optical path system and a HUD display device, including a TFT display, and a filter unit and a curved reflector arranged in sequence along the light output direction of the TFT display, wherein the filter unit is used to separate the light incident along the optical path into a first light beam and a second light beam, and a photosensitive element is arranged on the optical path of the first light beam or the second light beam, and the photosensitive element is used to sense the light intensity of the first light beam or the second light beam, wherein the deflection angle of the curved reflector is adjustable. In specific practice, the inventors found the following defects:

[0004] It can only display one image at a certain position on the windshield, and the transmission distance of this image is fixed. However, the current automobile intelligence is gradually improving, and it is necessary to be able to transmit images at different distances to realize the function of AR HUD. One image is difficult to meet the usage needs. Therefore, we have made improvements to this and proposed a dual-system near- and far-field HUD. Utility Model Content

[0005] The technical problem to be solved by the embodiments of the present utility model is that only one picture can be displayed at a certain position of the windshield, and the transmission distance of this picture is fixed. However, the intelligence of automobiles is gradually improving, and it is necessary to be able to transmit images of different distances to realize the function of AR HUD. One picture is difficult to meet the usage requirements.

[0006] In order to solve the above technical problems, the utility model adopts the following technical solutions:

[0007] A dual-system near- and far-field HUD comprises: a third free-form surface mirror, a first display unit and a second display unit, wherein the third free-form surface mirror is located on the optical path of the first display unit and the second display unit, and the first display unit and the second display unit are used to transmit images to a front windshield of a vehicle. By setting the first display unit and the second display unit, the first display unit and the second display unit are used to transmit images to the front windshield of the vehicle. Due to the inclined characteristic of the front windshield, the driver's eyes can see two images of different distances at the same time. The third free-form surface mirror is located on the optical path of the first display unit and the second display unit, that is, the first display unit and the second display unit can share the third free-form surface mirror, thereby reducing the space occupied, so as to save the space occupied by the HUD system in the entire vehicle.

[0008] As an improved manner of the utility model, the first display portion includes a first TFT display, the first TFT display is located below the third free-form surface mirror, and the third free-form surface mirror is used to refract the light projected by the first TFT display.

[0009] As an improvement of the present invention, the first display unit further includes a first free-form surface mirror, and the first free-form surface mirror is used to refract the light projected by the third free-form surface mirror onto the front windshield of the vehicle.

[0010] As an improved manner of the utility model, the second display portion includes a second TFT display, the second TFT display is located below the third free-form surface mirror, and the third free-form surface mirror is used to refract the light projected by the second TFT display.

[0011] As an improved manner of the utility model, the second display portion further includes a second free-form surface mirror, and the second free-form surface mirror is used to refract the light projected by the third free-form surface mirror onto the front windshield of the vehicle.

[0012] As an improved manner of the utility model, the third free-curved surface mirror, the second TFT display, the second free-curved surface mirror, the first TFT display and the first free-curved surface mirror are all installed in the vehicle center console.

[0013] As an improved manner of the utility model, it further comprises two curved surface mirror degree adjustment mechanisms, and the two curved surface mirror degree adjustment mechanisms are respectively connected to the first free-curved surface mirror and the second free-curved surface mirror.

[0014] As an improved manner of the utility model, the curved surface mirror degree adjustment mechanism is also installed in the vehicle center console, and the curved surface mirror degree adjustment mechanism is used to adjust the angles of the first free-curved surface mirror and the second free-curved surface mirror.

[0015] As an improved manner of the utility model, the curved surface mirror degree adjustment mechanism includes a drive motor, the output shaft of the drive motor is connected to a worm, the worm is connected to a worm wheel, and a connecting shaft is provided in the middle of the worm wheel.

[0016] As an improved manner of the utility model, a worm gear in one curved surface mirror degree adjustment mechanism is connected to the first free-curved surface mirror, and a worm gear in another curved surface mirror degree adjustment mechanism is connected to the second free-curved surface mirror.

[0017] Compared with the prior art, the embodiments of the present invention mainly have the following beneficial effects:

[0018] In order to solve the problem that in the prior art, only one picture can be displayed at a certain position of the windshield, and the transmission distance of this picture is fixed, while the current automobile intelligence is gradually improving, it is necessary to be able to transmit images at different distances to realize the function of AR HUD, and one picture is difficult to meet the usage requirements, the present application sets a first display unit and a second display unit, and the first display unit and the second display unit are used to transmit the picture to the front windshield of the vehicle. Due to the inclined characteristics of the front windshield, the driver's eyes can see two pictures of different distances at the same time, and the third free-form surface mirror is located on the optical path of the first display unit and the second display unit, that is, the first display unit and the second display unit can share the third free-form surface mirror, thereby reducing the space occupied, so as to save the space occupied by the HUD system in the entire vehicle. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 A schematic diagram of the structure of the dual-system near- and far-field HUD provided for this application;

[0020] Figure 2 A schematic diagram of the structure of the curved mirror degree adjustment mechanism, the first free-form surface mirror and the second free-form surface mirror of the dual-system near- and far-field HUD provided in the present application;

[0021] Figure 3 A schematic diagram of the three-dimensional structure of the curved mirror adjustment mechanism of the dual-system far-field and near-field HUD provided in this application.

[0022] Indicated in the figure:

[0023] 2. First TFT display; 201. First free-form surface mirror; 3. Second TFT display; 301. Second free-form surface mirror; 4. Third free-form surface mirror; 5. Curve mirror degree adjustment mechanism; 501. Drive motor; 502. Worm; 503. Worm wheel; 504. Connecting shaft. DETAILED DESCRIPTION

[0024] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those generally understood by those skilled in the art to which the present invention belongs; the terms used in the specification of the application herein are only for the purpose of describing specific embodiments and are not intended to limit the present invention. Reference to "embodiments" herein means that specific features, structures, or characteristics described in conjunction with the embodiments may be included in at least one embodiment of the present invention. The appearance of this phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0025] As described in the background technology, the existing technology can only display a picture at a certain position on the windshield, and the transmission distance of this picture is fixed. However, the intelligence of automobiles is gradually improving, and it is necessary to be able to transmit images at different distances to realize the function of ARHUD. One picture is difficult to meet the usage requirements.

[0026] In order to solve this technical problem, the utility model provides a dual-system far-field and near-field HUD, which is applied to display vehicle information.

[0027] Specifically, please refer to Figure 1 , dual-system near-field and far-field HUD specifically includes:

[0028] The third free-form surface mirror 4, the first display unit and the second display unit, the third free-form surface mirror 4 is located on the optical path of the first display unit and the second display unit, and the first display unit and the second display unit are used to transmit images to the front windshield of the vehicle.

[0029] The dual-system near- and far-field HUD provided by the utility model has a first display unit and a second display unit, and the first display unit and the second display unit are used to transmit images to the front windshield of the vehicle. Due to the inclined characteristic of the front windshield, the driver's eyes can see two images of different distances at the same time. The third free-form surface mirror 4 is located on the optical path of the first display unit and the second display unit, that is, the first display unit and the second display unit can share the third free-form surface mirror 4, thereby reducing the space occupied, so as to save the space occupied by the HUD system in the entire vehicle.

[0030] In order to enable those skilled in the art to better understand the solution of the utility model, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the accompanying drawings.

[0031] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features and technical solutions in the embodiments may be combined with each other.

[0032] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0033] Embodiment 1 of the utility model dual-system near-field and far-field HUD

[0034] The dual-system far-field and near-field HUD of the utility model comprises: a third free-form surface mirror 4, a first display unit and a second display unit, the third free-form surface mirror 4 is located on the optical path of the first display unit and the second display unit, and the first display unit and the second display unit are used to transmit images to the front windshield of the vehicle. By setting the first display unit and the second display unit, the first display unit and the second display unit are used to transmit images to the front windshield of the vehicle. Due to the inclined characteristic of the front windshield, the driver's eyes can see two images of different distances at the same time. The third free-form surface mirror 4 is located on the optical path of the first display unit and the second display unit, that is, the first display unit and the second display unit can share the third free-form surface mirror 4, thereby reducing the space occupied, so as to save the space occupied by the HUD system in the entire vehicle.

[0035] Further, such as Figure 1 As shown, the first display unit includes a first TFT display 2, and the first TFT display 2 is located below the third free-form surface mirror 4, and the third free-form surface mirror 4 is used to refract the light projected by the first TFT display 2, thereby realizing the refraction of the picture.

[0036] Further, such as Figure 1 As shown, the first display unit also includes a first free-form surface mirror 201, which is used to refract the light projected by the third free-form surface mirror 4 onto the vehicle windshield, so that the image displayed by the first TFT display 2 can be displayed on the vehicle windshield.

[0037] Further, such as Figure 1 As shown, the second display unit includes a second TFT display 3, the second TFT display 3 is located below the third free-form surface mirror 4, and the third free-form surface mirror 4 is used to refract the light projected by the second TFT display 3, thereby realizing the refraction of the picture;

[0038] TFT Thin Film Transistor is a thin film field effect transistor, which is a key component in liquid crystal displays. In liquid crystal displays, each liquid crystal pixel is driven by a thin film transistor integrated behind it, which ensures that the display can achieve high-speed, high-brightness, and high-contrast display effects; therefore, in the HUD system, the main function of the TFT display is to serve as a display device to present driving information such as speed and navigation in a high-quality, high-definition form. Through the high performance of the TFT display, the HUD system can ensure accurate and fast transmission of information, help the driver better understand the driving status of the vehicle, and improve driving comfort and safety.

[0039] Further, such as Figure 1 As shown, the second display part further includes a second free-form surface mirror 301, and the second free-form surface mirror 301 is used to refract the light projected by the third free-form surface mirror 4 onto the front windshield of the vehicle;

[0040] The first free-curved mirror 201 and the second free-curved mirror 301 use two curved mirrors with different curvature radii and different surface shapes, in order to achieve different impact magnifications and transmission image distances, so that the image displayed by the second TFT display 3 can be displayed on the front windshield of the vehicle.

[0041] Embodiment 2 of the utility model dual-system near-far field HUD

[0042] Further, such as Figure 1 As shown, the third free-form mirror 4, the second TFT display 3, the second free-form mirror 301, the first TFT display 2 and the first free-form mirror 201 are all installed in the vehicle's center console. They are installed in such a position mainly for driving safety and convenience considerations. The HUD system can project key driving information, such as vehicle speed, navigation instructions, etc., into the driver's field of view in front of the driver, so that the driver can understand the vehicle status at any time without having to lower his head to check the dashboard during driving. This design reduces the driver's line of sight and helps the driver to focus more on road conditions, thereby improving driving safety. In addition, the projection focal length of the HUD system is located in front of the vehicle's front windshield, so that the driver can clearly see the characters, images and other information superimposed on the exterior scene without having to change the focal length of his eyes. This design not only improves the visibility of the information, but also enables the driver to obtain driving information more intuitively, further enhancing the convenience and safety of driving.

[0043] In summary, the HUD system is installed above the car's windshield or on the center console in front of the driver, mainly to improve driving safety and convenience.

[0044] Embodiment 3 of the utility model dual-system near-far field HUD

[0045] Further, such as Figure 1 As shown, two curved surface mirror degree adjustment mechanisms 5 are also included, and the two curved surface mirror degree adjustment mechanisms 5 are respectively connected to the first free-curved surface mirror 201 and the second free-curved surface mirror 301.

[0046] Further, such as Figure 1 As shown, the curved mirror degree adjustment mechanism 5 is also installed in the vehicle center console, and the curved mirror degree adjustment mechanism 5 is used to adjust the angles of the first free-curved mirror 201 and the second free-curved mirror 301 to meet the usage needs of drivers of different body shapes.

[0047] Further, such as Figure 1 As shown, the curved mirror degree adjustment mechanism 5 includes a driving motor 501, the output shaft of the driving motor 501 is connected to a worm 502, the worm 502 is connected to a worm wheel 503, and a connecting shaft 504 is arranged in the middle of the worm wheel 503, the worm 502 is installed in the vehicle through a bearing and a bearing seat, the driving motor 501 can drive the worm wheel 503 to rotate through the worm 502, the connecting shaft 504 is installed in the vehicle through a bearing, and the connecting shaft 504 can support the worm wheel 503.

[0048] Further, such as Figure 1 As shown, the worm gear 503 in one of the curved surface mirror degree adjustment mechanisms 5 is connected to the first free-curve mirror 201, and the worm gear 503 in the other curved surface mirror degree adjustment mechanism 5 is connected to the second free-curve mirror 301, so that when the worm gear 503 rotates, it can drive the first free-curve mirror 201 and the second free-curve mirror 301 to rotate, thereby realizing the adjustment of the angles of the first free-curve mirror 201 and the second free-curve mirror 301.

[0049] When in use, for the convenience of description and understanding, the present application uses A to represent the vehicle windshield and marks it in the figure. The images displayed by the first TFT display 2 and the second TFT display 3 are projected onto the third free-form surface mirror 4, and the third free-form surface mirror 4 refracts the image information displayed by the first TFT display 2 toward the first free-form surface mirror 201, and then refracts it onto the vehicle windshield by the first free-form surface mirror 201. The third free-form surface mirror 4 refracts the image information displayed by the second TFT display 3 toward the second free-form surface mirror 301, and then refracts it onto the vehicle windshield by the second free-form surface mirror 301, so that the driver can see two images on the vehicle windshield.

[0050] Obviously, the embodiments described above are only some embodiments of the utility model, rather than all embodiments. The preferred embodiments of the utility model are given in the accompanying drawings, but they do not limit the patent scope of the utility model. The utility model can be implemented in many different forms. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosure of the utility model more thorough and comprehensive. Although the utility model is described in detail with reference to the aforementioned embodiments, for those skilled in the art, it is still possible to modify the technical solutions recorded in the aforementioned specific implementation methods, or to replace some of the technical features therein with equivalents. Any equivalent structure made using the contents of the utility model specification and the accompanying drawings, directly or indirectly used in other related technical fields, is also within the scope of patent protection of the utility model.

Claims

1. A dual-system near-field and far-field HUD, characterized in that: include: A third free-form surface mirror (4), a first display unit and a second display unit, wherein the third free-form surface mirror (4) is located on an optical path between the first display unit and the second display unit, and the first display unit and the second display unit are used to transmit images to a front windshield of the vehicle; The first display unit comprises a first TFT display (2), the first TFT display (2) being located below the third free-form surface mirror (4), and the third free-form surface mirror (4) being used for refracting light projected by the first TFT display (2); The first display unit further comprises a first free-form surface mirror (201), the first free-form surface mirror (201) being used to refract the light projected by the third free-form surface mirror (4) onto the front windshield of the vehicle; The second display unit further comprises a second free-form surface mirror (301), the second free-form surface mirror (301) being used to refract the light projected by the third free-form surface mirror (4) onto the front windshield of the vehicle; The second display portion comprises a second TFT display (3), the second TFT display (3) is located below the third free-form surface mirror (4), and the third free-form surface mirror (4) is used to refract light projected by the second TFT display (3); It also comprises two curved surface mirror degree adjustment mechanisms (5), wherein the two curved surface mirror degree adjustment mechanisms (5) are respectively connected to the first free-curved surface mirror (201) and the second free-curved surface mirror (301); The curved surface mirror degree adjustment mechanism (5) comprises a drive motor (501), the output shaft of the drive motor (501) is connected to a worm (502), the worm (502) is connected to a worm wheel (503), and a connecting shaft (504) is provided in the middle of the worm wheel (503); The worm gear (503) in one of the curved surface mirror degree adjustment mechanisms (5) is connected to the first free-curved surface mirror (201), and the worm gear (503) in the other curved surface mirror degree adjustment mechanism (5) is connected to the second free-curved surface mirror (301).

2. The dual-system near-field and far-field HUD according to claim 1, characterized in that: The third free-form surface mirror (4), the second TFT display (3), the second free-form surface mirror (301), the first TFT display (2) and the first free-form surface mirror (201) are all installed in a vehicle center console.

3. The dual-system near-field and far-field HUD according to claim 2, characterized in that: The curved surface mirror degree adjustment mechanism (5) is also installed in the vehicle center console, and the curved surface mirror degree adjustment mechanism (5) is used to adjust the angles of the first free-curved surface mirror (201) and the second free-curved surface mirror (301).

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