CN219552766U - Display device and vehicle - Google Patents

Abstract

The present utility model relates to the field of projection display technologies, and in particular, to a display device and a vehicle. According to the utility model, the imaging screen with the width equivalent to that of the center console is embedded in the center console of the vehicle, the imaging surface of the imaging screen is opposite to the bottom of the windshield, and display light generated by the imaging screen is reflected at the bottom of the windshield, so that human eyes can observe a virtual image of an image displayed by the imaging screen on the windshield along the reflected light. The utility model can greatly increase the width of the projection picture of the HUD display device and improve the watching experience of the primary driver and the secondary driver.

Description

Display device and vehicle

Technical Field

The present utility model relates to the field of projection display technologies, and in particular, to a display device and a vehicle.

Background

HUD (Head Up Display) is a brand new mode of realizing Display by reflection on a transparent surface, is applied to vehicle-mounted Display and is used for directly displaying information in the field of view in front of a driver, and compared with a traditional instrument panel or a vehicle screen, the HUD (Head Up Display) is used for enabling the driver to not need to look at the information in a low Head mode, so that potential safety hazards are greatly reduced. Currently, HUDs used in vehicles are generally classified into C-HUDs, W-HUDs, and the like, wherein the C-HUDs are a display device mounted on a console of the vehicle, the display device comprises transparent resin and an optical-mechanical assembly for projecting display contents onto the transparent resin, and the display size is determined by the size of the transparent resin, so that the limitation of images is very high. Although the W-HUD improves the display mode, the display content is directly projected onto the windshield, the display effect of the HUD is not changed basically, the display view angle is small, the displayable content is limited, the range of the eye box can only meet the requirements of a driver, and the user experience is very bad.

Disclosure of Invention

The utility model aims to provide a display device and a vehicle, and solves the technical problems that in the prior art, the projection content of HUD display devices is limited by pictures and has great limitation and poor display effect.

In order to solve the technical problems, the utility model adopts the following technical scheme:

in a first aspect, the present utility model provides a display apparatus comprising:

an imaging screen integrated in a vehicle center console, the imaging screen having an imaging surface opposite to a windshield, the imaging surface emitting display light to be projected at a bottom position of the windshield so that a virtual image corresponding to a display image of the imaging screen is presented at the bottom position of the windshield;

the imaging screen comprises a first part corresponding to a main driver and a second part corresponding to a secondary driver, wherein the first part and the second part are provided with display arrays for displaying images, so that part of the virtual image is opposite to the main driver and part of the virtual image is opposite to the secondary driver;

and the two sides of the first part and the second part which are integrated are not provided with display arrays for displaying images, so that gaps are formed between the virtual image and the two side edges of the windshield.

In an alternative implementation of the first aspect, the imaging screen further comprises a third portion interposed between the first portion and the second portion, the third portion having a display array for displaying an image.

In an alternative embodiment of the first aspect, the first, second and third portions of the imaging screen are integrally formed.

In an optional implementation manner of the first aspect, the display images of the first portion, the second portion and the third portion are subjected to predistortion treatment, and then display light is emitted from the imaging surface, so as to counteract an influence of the curvature of the windshield on the virtual image.

In an alternative implementation manner of the first aspect, the display images of at least two of the first portion, the second portion, and the third portion are different.

In an optional implementation manner of the first aspect, the display images of the first portion, the second portion and the third portion display content according to a preset rule.

In an optional implementation manner of the first aspect, the display image of the first portion is navigation information.

In an optional implementation manner of the first aspect, the display image of the second portion is entertainment information.

In an optional implementation manner of the first aspect, the display image of the third portion is presentation information.

In an optional implementation manner of the first aspect, the presentation information of the third portion is determined according to information of the first portion or the second portion.

In an alternative implementation of the first aspect, the display image of the first, second and/or third portion is changed in response to a control for the first, second or third portion.

In an optional implementation manner of the first aspect, in response to stopping the independent display of the third portion, the second portion and the third portion are spliced to display the same kind of information.

In an alternative implementation of the first aspect, the display array includes an image source for displaying an image and a backlight for providing brightness to the image source.

In an optional implementation manner of the first aspect, the backlight adjusts the brightness provided to the image source according to the ambient light brightness.

In an alternative implementation of the first aspect, the brightness range of the backlight is dynamically adjusted between 500-1500 nits.

In an optional implementation manner of the first aspect, a glass full fit is adopted for a surface of the image source.

In an alternative implementation of the first aspect, the display array is dimensioned in a portrait direction according to a required portrait resolution of the display image and a required pixel pitch of the display array.

In an alternative embodiment of the first aspect, a holographic film is provided in cooperation with the projection at least at the bottom of the windscreen presenting the virtual image.

In an alternative embodiment of the first aspect, the holographic film is attached to the entire inner surface of the windscreen.

In an alternative embodiment of the first aspect, the imaging plane and the virtual image are optically symmetrical with respect to the windscreen, the angle of the imaging plane being determined according to the desired virtual image angle in the viewing direction.

In an alternative embodiment of the first aspect, the imaging screen is provided with first adjustment means cooperating with the vehicle center console, the first adjustment means providing the angle of the imaging surface with a first state or a second state to accommodate a viewing direction from a first height or a viewing direction from a second height.

In an alternative embodiment of the first aspect, the imaging screen is provided with a second adjustment means cooperating with the vehicle center console, the second adjustment means bringing the imaging plane into a first distance or a second distance from the windscreen such that the virtual image appears on the windscreen with a third or a fourth height.

In a second aspect, the present utility model provides a vehicle comprising a display device according to the first aspect.

Compared with the prior art, the imaging screen with the width equivalent to that of the center console is embedded in the center console of the vehicle, the imaging surface of the imaging screen is opposite to the bottom of the windshield, and display light generated by the imaging screen is reflected at the bottom of the windshield, so that human eyes can observe virtual images of images displayed by the imaging screen on the windshield along the reflected light. The utility model can greatly increase the width of the projection picture of the HUD display device and improve the watching experience of the primary driver and the secondary driver.

Drawings

In order to more clearly illustrate the technical solution of the present utility model, the drawings used in the description of the technical solution will be briefly described. It is obvious that the drawings in the following description are only some examples of the present utility model, and that other drawings may be obtained from these drawings without inventive effort for a person of ordinary skill in the art.

FIG. 1 is a schematic diagram of a C-HUD display scene in some examples of the utility model.

FIG. 2 is a schematic diagram of a W-HUD display scene in some examples of the utility model.

Fig. 3 is a schematic view of a HUD projection display in some examples of the utility model.

Fig. 4 is a schematic diagram of HUD display scene in some examples of the utility model.

Fig. 5 is a schematic diagram showing a distribution on a windshield in some examples of the utility model.

Fig. 6 is a schematic diagram of a HUD display ghost image in some examples of the utility model.

Fig. 7 is a schematic illustration of a film-on-windshield construction in some examples of the utility model.

Fig. 8 is a schematic illustration of a film-on-windshield construction in some examples of the utility model.

Fig. 9 is a schematic view of a HUD display device in some examples of the utility model.

Fig. 10 is a schematic diagram of a HUD projection display in some examples of the utility model.

Fig. 11 is a schematic view of HUD projection display light paths in some examples of the utility model.

Fig. 12 is a schematic diagram of a HUD display device module according to some examples of the present utility model.

Fig. 13 is a schematic illustration of a vehicle in some examples of the utility model.

Description of the embodiments

The present utility model will be described in detail below with reference to the attached drawings, but the descriptions are only examples of the present utility model and are not limited to the utility model, and variations in structure, method or function etc. according to these examples are included in the protection scope of the present utility model.

It should be noted that in different examples, the same reference numerals or labels may be used, but these do not represent absolute relationships in terms of structure or function. Also, the references to "first," "second," etc. in the examples are for descriptive convenience only and do not represent absolute distinguishing relationships between structures or functions, nor should they be construed as indicating or implying a relative importance or number of corresponding objects. Unless specifically stated otherwise, reference to "at least one" in the description may refer to one or more than one, and "a plurality" refers to two or more than two.

In addition, in representing the feature, the character "/" may represent a relationship in which the front-rear related objects exist or exist, for example, a head-up display/head-up display may be represented as a head-up display or a head-up display. In the expression operation, the character "/" may indicate that there is a division relationship between the front and rear related objects, for example, the magnification m=l/P may be expressed as L (virtual image size) divided by P (image source size). Also, "and/or" in different examples is merely to describe the association relationship of the front and rear association objects, and such association relationship may include three cases, for example, a concave mirror and/or a convex mirror, and may be expressed as the presence of a concave mirror alone, the presence of a convex mirror alone, and the presence of both concave and convex mirrors.

The HUD mainly uses the optical reflection principle to project the information to be displayed on the transparent surface, and the user can directly watch the corresponding information on the transparent surface, so that a special display screen is not needed, and another convenient implementation manner is provided for information display. In particular, when the transparent surface (such as a windshield glass and the like) is arranged in the front view field of the driver, and the driver needs to view information when driving the vehicle, the view field does not need to be rotated to a place beyond the front of the vehicle, so that the driving safety of the driver is improved. As shown in fig. 1, in some examples, a display device (C-HUD) may be fixedly installed on a console 10 in a vehicle, where the display device includes a base and a transparent resin 11 fixed on the base, an optical-mechanical component and an optical lens for realizing light path planning are integrated in the base, the optical-mechanical component may project display light, and the display content is projected on the surface of the transparent resin 11 through the optical lens, and since the transparent resin 11 is disposed in front of a driver and in a transparent state, the driver does not influence the driver to observe the road conditions ahead, the driver can observe the content displayed on the transparent resin 11 while observing the road conditions ahead during driving, so as to reduce the potential safety hazard to a certain extent. However, as a rear-mounted display device, it is impossible to design the transparent resin 11 to an excessively large size to occupy the space in the vehicle, and at the same time, the transparent resin is used as a protruding object on the console 10 in the vehicle, which may adversely bring uncertainty to the safety of the driver in the event of a serious collision accident of the vehicle.

As shown in fig. 2, in some examples, before the vehicle leaves the factory, a display device (W-HUD) is integrated in a console in the vehicle, and the corresponding display device includes an optical-mechanical assembly, an optical lens, and the like, where the optical-mechanical assembly projects display light, and finally, the display light is projected onto a windshield 30 through an optical path planning of the optical lens, and the windshield 30 is used as a transparent surface for receiving the projection display, so that a virtual image 12 (such as navigation information and a vehicle speed) corresponding to the display content is observed. Specifically, as shown in fig. 3, a display device for realizing the HUD function is embedded on a center console in front of a steering wheel of the vehicle, where the display device includes at least a light machine 21, a first mirror 22, and a second mirror 23, and in this example, the first mirror 22 and the second mirror 23 cooperate to form an optical path transmission device, and the optical path transmission device may project display light emitted by the light machine 21 onto a windshield 30. In some examples, the first mirror 22, the second mirror 23 may be configured as a free-form surface mirror such as a concave mirror, a convex mirror, or the like, as desired. In some examples, the optical path transmission device may also enable planning of the optical path by one or more transmissive mirrors. The optical machine 21 projects light rays for displaying corresponding information, and the first reflecting mirror 22 and the second reflecting mirror 23 are used for realizing light path planning, so that a light path can be customized in a smaller space, and different projection display requirements are met. The display light projected by the light machine 21 is finally projected on the windshield 30 of the vehicle through multiple reflections of the first reflecting mirror 22 and the second reflecting mirror 23, and a driver 40 in the vehicle can see a virtual image 12 formed on the windshield 30 by the projection light of the light machine 21 against the windshield 30, and the virtual image may be corresponding to parameter information of the vehicle. In some examples, first mirror 22, second mirror 23 may also be adjusted to some degree to change the projected position of virtual image 12 on windshield 30 to accommodate the height of different drivers 40.

It should be noted that, although the W-HUD in the examples of fig. 2 and 3 conceals the optical-mechanical components, the optical lenses, and the like in the center console, and the transparent surface is a windshield of the multiplexed vehicle itself, unlike the C-HUD in the example of fig. 1, in which the display device is prominently mounted on the vehicle center console, which results in a sharp collision risk to the person in the vehicle, the projection structure determines that the W-HUD still does not have a larger angle of view, and the display area that the driver can observe on the windshield is not necessarily much larger than the display area determined by the transparent resin of the C-HUD, and the display content thereof is limited only to conventional navigation information and vehicle speed. Meanwhile, the range of the eye box formed by projection is smaller, so that a main driver can normally observe display information on a windshield only in a normal sitting posture, and other in-vehicle personnel such as a subsidiary driver can not basically see corresponding information.

As shown in fig. 4, in some examples, in order to increase the width of the projection screen and improve the visual range of the information presentation, in this example, the optical path structures shown in fig. 2 and 3 are improved, an imaging screen corresponding to the width of the center console is integrated on the vehicle center console 10, the imaging screen is embedded in the vehicle center console, and the body of the imaging screen does not protrude above the center console, so that the visual field of the driver is not affected, and at the same time, the risk of collision is not existed. It should be noted that, the imaging screen is disposed in the center console, but a projection window is reserved, one surface (imaging surface) of the imaging screen faces outwards to the projection window, the image is displayed through the imaging surface of the imaging screen, the emitted display light can be directly projected to the projection area 13 of the windshield 30 through the projection window, and the projection area 13 is located at the bottom of the windshield 30, so that the driver is not affected basically by watching the road in front. The lateral dimension of the projection area 13 is related to the lateral dimension of the imaging screen integrated in the center console, and the projection area 13 basically extends from the primary driving position to the secondary driving position, so that more projection information can be carried, and different viewing requirements of the primary driving and the secondary driving can be met. Correspondingly, the projection area 13 is also matched with an imaging screen from the main driving position to the auxiliary driving position relative to the interior of the center console. Optionally, the imaging screen may be formed by physically splicing multiple small screens, or may have a complete wide screen spanning between the primary driver and the secondary driver. In the present utility model, "lateral" refers to a direction between left and right in a view angle of a windshield normally seated in the cockpit, and longitudinal may refer to a direction between front and rear in a view angle of a windshield normally seated in the cockpit, or a direction between up and down facing the screen.

In some examples, since the curvature of the a-pillars on both sides of the windshield 30 of most vehicles is complex, the projection effect may have serious image distortion, so the projection area 13 may be controlled at the center of the windshield 30, and a certain gap 14 may be left between the projection area 13 and the a-pillars, that is, information may be displayed on both sides of the windshield 30 may be avoided. Accordingly, the imaging screen integrated in the center console also reserves dot spaces on both sides, for example, the reserved spaces can be directly the surface material of the center console, or the imaging screen occupies the transverse position of the entire center console, but the two side screen areas corresponding to the gaps 14 do not have the function of opening the display image, so that no corresponding display light is projected on the gap 14 areas.

In some examples, since the projection area 13 is significantly larger than a conventional HUD projection area, multiple types of images can be projected and displayed, effectively utilizing an ultra-wide projection area 13 to meet the different needs of the driver and all passengers in the vehicle. As shown in fig. 5, in some examples, the projection area 13 may be divided into three parts, and the leftmost part may display navigation information or the like in a projection manner due to the fact that the leftmost part faces the main drive (for example, a left rudder vehicle), and the driver may drive by directly observing the above navigation information. The rightmost part can project and display entertainment information such as animation of music rhythm or video playing window as the right part faces to the secondary driver, so that the requirement of the secondary driver on the time of playing passengers is met, and the defect that most of vehicles have no mature display scheme in secondary driving is overcome. Optionally, a sub-projection area may be further disposed in the middle portion of the projection area 13, for projecting and displaying presentation information, so as to serve the viewing experience of the rear passengers or the auxiliary requirements of the main driving and the auxiliary driving, for example, the distance from the destination can be displayed according to the navigation information displayed by the main driving facing portion, so that anxiety of the rear passengers can be relieved. For example, the video image displayed by the opposite side driving part can be copied to the middle part for playing, so that the multimedia requirement of all vehicle personnel can be met.

As shown in fig. 6, the imaging screen 24 as described above emits display light to be projected on the windshield 30, and the driver 40 can observe the virtual image 13 presented on the windshield 30 by reflection of the windshield 30. However, in some examples, due to the excessive thickness of the windshield 30, the windshield 30 has two reflective surfaces, an inner surface and an outer surface, respectively, and the display light emitted from the imaging screen 24 is reflected once by the inner surface and the outer surface, respectively, when reaching the windshield 30, and in fact, the driver 40 may observe two virtual images 13 on the windshield 30, that is, may see ghost images, which obviously affects the effect of the projection display. Therefore, it is necessary to take some measure to cope with the ghost image caused by the windshield. More importantly, since the windshield 30 is transparent, when the display light emitted from the imaging screen 24 reaches the windshield 30, a part of the display light is transmitted, so that the brightness of the virtual image 13 seen by the driver cannot meet the requirement, and particularly in a strong light environment, the display content displayed by the virtual image 13 is difficult to see if the display brightness is too low, that is, the corresponding display content is not clearly seen in the projection area.

In order to overcome the problems of low brightness and certain ghost caused by the display of the virtual image 13, a holographic film may be disposed on the inner surface of the windshield 30, and the holographic film may be a transflective reflective film, so that the holographic film of this example may increase the reflectivity of light, on the one hand, the brightness of the reflective display may be increased, and on the other hand, the brightness of the light reaching the outer surface from the inner surface of the windshield may be reduced due to the increase of the reflectivity, so that the ghost condition may be inhibited in a certain procedure. As shown in fig. 7, since the projection area 13 shown in fig. 4 is located at the bottom of the windshield 30, a holographic film 31 may be attached to the bottom of the windshield 30, so that the virtual image effect of the imaging screen reflected on the windshield can be enhanced in cooperation with the display brightness on the projection area 13. Due to the semi-transparent and semi-reflective effect of the holographic film 31, not only the reflected image but also the light transmitted from the road ahead can be observed through the holographic film, so that the requirement of simultaneously watching the projected image and the environmental scene can be satisfied. As shown in fig. 8, in some examples, since the hologram film has both transmission and reflection functions, the attachment of the hologram film to the windshield does not affect the driver's view of the road ahead, and therefore, in order to reduce the vertical cracking sensation caused by the attachment of the hologram film to the bottom of the windshield, the hologram film 31 may be attached to the entire inner surface of the windshield 30, which may not only improve the effect of the bottom of the windshield, but also improve the effect above the bottom of the windshield. In some examples, the display image of the imaging screen may also be projected to an area outside the bottom of the windshield, as is practical.

As shown in fig. 9, the imaging screen 24 is disposed directly below the windshield 30, and the display image of the imaging screen 24 is directly projected onto the projection area 13, and the projection area 13 displays the same information as the display image of the imaging screen, that is, a virtual image. Based on the above projection structure, the windshield 30 is utilized to project the display image presented by the imaging screen 24 to the human eye, and the human eye can observe the image suspended in the space along the reflected light, so that the viewing experience of the personnel in the vehicle can be greatly improved by applying the above principle in the field of vehicle-mounted projection display. Accordingly, the imaging screen 24 has a first transverse dimension 24a and a second longitudinal dimension 24b, and the first dimension 24a determines the transverse width of the projection area 13 due to the optical projection relationship between the imaging screen 24 and the projection area 13, and basically the larger the first dimension 24a, the wider the transverse width of the projection area 13. The second dimension 24b determines the longitudinal height of the projection area 13, basically the larger the second dimension 24b, the higher the longitudinal height of the projection area 13. In some examples, the lateral dimension may fully account for the width of the corresponding vehicle center console and windshield, and the longitudinal dimension may fully account for the projected area height and display effect projected onto the windshield when determining the size of the imaging screen.

In some examples, as shown in fig. 10, a complete holographic film 31 is attached to the inner surface of the windshield 30 to ensure that the display light from the imaging screen 24 is well reflected to the windshield 30 to increase the display brightness. For a windshield 30 on a vehicle, it is usually mounted on the vehicle at a certain inclination angle, so that the imaging screen 24 integrated in the center console is correspondingly located directly under the windshield 30, and the virtual image 13 is optically positioned, based on the optical imaging principle, at a point symmetrical to the imaging screen 24 with respect to the windshield 30, that is, at a point where the reflected light path seen by the driver 40 is extended reversely to the other side of the windshield 30. According to the above-described relation of the optical paths, the virtual image 13 is also adjacent to the windshield 30 on the other side of the windshield 30 when the imaging screen 24 is adjacent to the windshield 30, and accordingly, the position of the eyes of the driver 40 is unchanged, and the position of the virtual image 13 on the windshield 30 is perceived to be lowered. Conversely, when the imaging screen 24 is away from the windshield 30, the virtual image 13 is also away from the windshield 30 on the other side of the windshield 30, and accordingly, the driver 40 feels that the position of the virtual image 13 on the windshield 30 is raised. In addition, the angle of the imaging screen 24 is reversed, and accordingly the virtual image is reversed on the other side of the windshield 30, the driver 40 perceives the change in the angle of the virtual image, and the brightness observed by the driver is affected by the difference in the viewing direction between the driver and the virtual image. Therefore, a corresponding mechanical structure can be provided to ensure that the imaging screen 24 can change front and back or change angle, so as to adapt to the requirements and display effects of different observers.

In some examples, the imaging screen includes hardware circuitry (described in more detail below in connection with fig. 12) to control the display and a support structure secured within the center console. Optionally, the supporting structure further includes a corresponding adjusting device, where the adjusting device may implement the front-back change or the angle change of the imaging screen. For example, a rotatable long shaft can be connected between the imaging screen and the center console, the imaging screen can rotate along the long shaft, and accordingly, the angle of emergent light rays of the imaging surface of the imaging screen can be adjusted, so that clear images can be watched in the range of 100mm above and below the conventional viewpoint position. For another example, a sliding rail is relatively arranged between the imaging screen and the center console, and the imaging screen can move back and forth along the sliding rail, so that the up-and-down movement of the virtual image on the windshield is realized.

As shown in fig. 11, with the above-described configuration, the display light emitted from the imaging screen on the lower right side has a large range, and after being projected onto the windshield in the middle, the display light reaches the left eye-box region, i.e., the region that can be observed by the human eye, through reflection. Since the light propagation surface is wide, the observable area is also large as seen by the left eye box, and the range of the eye box is obviously wider than that of the eye box displayed by the traditional HUD projection, in an actual vehicle, not only can the main driver clearly see the information projected on the bottom of the windshield, but also the auxiliary driver can clearly see the information projected on the bottom of the windshield, and even passengers in the rear row can also see the information projected on the bottom of the windshield. Accordingly, the effect of the display screen is equal to that of a traditional vehicle-mounted screen, and the display screen is realized on a windshield, so that information is not required to be checked at a low head, meanwhile, the displayed content does not influence the sight of observing a road in front, and the bad experience brought by a traditional HUD to a user is greatly improved.

In some examples, the imaging screen is controlled by a corresponding hardware circuit, and accordingly, the imaging screen can also interact with the vehicle machine, so as to acquire and display parameter information of the vehicle. Fig. 12 shows a block diagram of a HUD display device. The hardware circuitry may include, among other things, a processor 51, a power module 52, an imaging screen 53, a run memory 54, a storage memory 55, a motor 56, and the like. It should be noted that the various modules listed in fig. 12 are merely exemplary descriptions and not limiting in any way, and that the hardware circuitry for controlling the imaging screen may also include other modules in some examples. In addition, the modules described above may be implemented in one or more hardware in different examples, or a single module may be implemented by a combination of a plurality of hardware.

The processor 51 serves as a control center of the overall system and includes one or more processing units of any type, including but not limited to a CPU (Central Processing Unit ), GPU (Graphics Processing Unit, graphics processor), microcontroller, DSP (Digital Signal Processor, digital signal control unit), NPU (Neural-network Processing Unit, neural network processor), or any combination thereof. The processor 51 is configured to generate an operation control signal according to a computer program, and control other modules, and accordingly, can process and drive a corresponding video stream to perform video selection control of display and projection display on an imaging screen.

The power supply module 52 is used to supply power to the entire system, including a power supply IC that outputs a specific voltage drive, and the like. Alternatively, the power module 52 may be connected to a power source provided by the vehicle receiver to provide a regulated power supply to each module of the system, so as to ensure that the processor 51 and the like are not burned out.

The imaging screen 53 is for projecting display light containing the designation information on the windshield, and a display image on the imaging screen is controlled to be driven by the processor 51. The imaging screen 53 may include an image source for displaying an image of corresponding information and projecting the same according to control of the processor 51, and may be an LCD (Liquid Crystal Display ) or the like. In order to realize high light transmittance of the screen surface, the technical scheme of glass full lamination can be adopted on the surface of the image source, so that the intensity assurance can be provided for the LCD panel, the loss of brightness can be reduced, and the influence of glare is restrained. The backlight is used to provide a light source for the image source and adjust the brightness of the display according to the control of the processor 51, and may be an LED (light-emitting diode) light source, a laser, or the like. In some examples, the backlight is designed for ultra-high dynamic luminance range adjustment, has ultra-high luminance range dynamic adjustment capability of 500 nit to 1500 nit, and can be adjusted in real time according to the luminance of ambient light to achieve that the luminance and contrast of an image viewed by human eyes are always kept within a comfortable range.

The running Memory 54 is used for storing computer programs executed by the processor 51, and temporarily storing operation data, data exchanged with the storage Memory, and may be SDRAM (Synchronous Dynamic Random-access Memory), etc.

The storage memory 55 is used for storing resources such as related display content of the display device, and may be Flash, or may provide an interface to access an external memory.

The motor 56 is used to drive the imaging screen to change its position accordingly, for example, by driving the adjusting device to adjust the imaging screen back and forth or angle, so as to change the display effect of the virtual image on the windshield.

In some examples, the processor 51 communicates with modules inside the system or with external vehicles via a specific communication protocol, and accordingly, an ethernet interface, a CAN (Controller Area Network ) interface, etc. may be integrated. The ethernet interface is a network data connection port for local area network communication, and defines a series of software and hardware standards, and multiple electronic devices can be connected together through the ethernet interface, for example, information interaction can be performed with a vehicle. The CAN interface is a network data connection port of the controller local area network, provides a standard bus for a control system and embedded industrial control in the automobile, and realizes communication interaction among all nodes. It should be noted that the communication interface is not limited to the above interface, and any alternative communication protocol may be used.

In some examples, to increase the width of the projected image of the HUD display device while improving the viewing experience of both primary and secondary driving, the display device includes an imaging screen (see fig. 4-5, 9-10) integrated into the vehicle center console, the imaging screen being positioned below the windshield such that at least the imaging surface of the imaging screen is disposed opposite the windshield, optionally the imaging surface is directly opposite the bottom of the windshield, thus ensuring that the display light emitted by the imaging surface is projected at the bottom of the windshield, and the display image on the imaging surface will present a corresponding virtual image at the bottom of the windshield for viewing by personnel in the vehicle based on principles of optical reflection.

The imaging screen so that the corresponding imaging surface can emit display light is implemented by a display array integrated in the imaging screen, which may include an image source for displaying an image and a backlight for providing brightness to the image source (see in particular the example of fig. 12). The brightness of the backlight may be dynamically adjusted (as described above, between 500-1500 nits) to meet the actual needs, optionally, the backlight adjusts the brightness provided to the image source based on ambient light. Further, the image source may be entirely bonded with glass in order to increase the brightness of display light emitted from the entire imaging surface.

The imaging screen defines a projection area projected on the windshield by the arrangement of the display arrays (refer specifically to fig. 4, 5). Alternatively, the display array may be continuously integrated inside the imaging screen, enabling a partial area of the display array for displaying the image projected on the windscreen. In some examples, the lateral direction of the imaging screen spans both sides of the primary and secondary drivers such that the imaging screen includes a first portion relative to the primary driver and a second portion relative to the secondary driver, both of which have display arrays for displaying images such that a virtual image projected on the windshield has content facing both the primary and secondary drivers. Optionally, a third portion is further provided between the first portion and the second portion, and the third portion also has a display array for displaying an image, and virtual images of the first portion, the second portion, and the third portion projected on the windshield may refer to fig. 5. Alternatively, the first, second and third portions may be integrally formed using a unitary display array. In order to improve the projection effect of the first, second and third portions on the windshield, a holographic film may be further disposed on the windshield in the corresponding area, and reference may be made to examples of fig. 7 and 8.

The first part, the second part and the two sides of the center console are provided with certain gaps, so that the virtual images of the first part and the second part projected on the windshield are provided with gaps with the edges of the two sides of the windshield (refer to fig. 4), the gaps on the two sides of the windshield can be prevented from displaying information, and the influence of image distortion on the display effect is avoided. In some examples, to eliminate distortion caused by the projection of the first, second, or third portions onto the windshield, the processor may employ an image predistortion algorithm by which the image displayed on the display array is adjusted to match the distortion effects after reflection from the windshield, effectively eliminating image bending due to windshield bending.

As described above, by providing a display array of a plurality of portions, a plurality of projection sub-areas can be displayed on the windshield, and further, the content displayed in the projection sub-areas can be defined according to the positions of the projection sub-areas, i.e., the processor will display specific content on the display array of a plurality of portions accordingly. For example, the first part of the main driver can display the required content related to the driving behavior of the driver, the second part of the auxiliary driver can display the required content related to the riding behavior of the passenger, and the third part between the first part and the second part can display the required content related to the riding behavior of the rear passengers, so that the displayed content of the first part, the displayed content of the second part and the displayed content of the third part can be different, and accordingly, three different areas are formed by projection at the bottom of the windshield, so that the main driver, the auxiliary driver and the rear passengers can view different contents respectively. Optionally, the display images of the first portion, the second portion and the third portion display content according to preset rules, specifically, the display range and the content can be switched according to different usage situations, for example, the second portion can display entertainment information when the vehicle normally runs, and can display overspeed warning information when the vehicle is in overspeed running, so that passengers driving the assistant driver can remind the driver to run at a reduced speed.

In some examples, the first portion displays navigation information, the second portion displays entertainment information, and the third portion displays presentation information, with reference to fig. 5, such that the projection display is on the windshield with the vehicle speed, directions, etc. on the lower left, the middle is a prompt for distance from the destination, and the lower right is a rhythmic animation of music. Alternatively, the presentation information of the third portion may be determined according to information of the first portion or the second portion, such as that the third portion displays a distance from a destination, the information of the destination being a destination on which the navigation information displayed by the first portion is based.

Further, the vehicle personnel can control any one of the first part, the second part or the third part, if the control content relates to at least one of the display content of the first part, the second part and the third part, the display image of the corresponding part can be changed, for example, the video of the second part is controlled to initiate a screen throwing function in a touch control or key mode, the second part can display prompt information of screen throwing completion, the third part can correspondingly display the video of the second part, and the original display content of the third part is covered. Optionally, when the third part stops independent display, for example, when no passenger is taken in the rear row, the second part and the third part can be automatically spliced together in the display effect, so that a user can view a wider projection subarea on the right side of the bottom of the windshield, and more similar information can be displayed in the corresponding projection subarea, for example, the user can use the same to browse a webpage on a wide screen.

As described above, the imaging screen may be embedded in the center console, and considering that the projection area needs to reserve a gap on both sides of the windshield, so that the lateral dimension of the imaging screen may be equal to and slightly smaller than the width of the center console, and the longitudinal dimension of the imaging screen determines the height of the projection area on the windshield, accordingly, the display array for displaying the image indirectly affects the longitudinal dimension, specifically, the longitudinal resolution of the display image and the pixel pitch of the display array, which are defined parameters before the product design, determine the output mode of the image, and the difference of the pixel pitch affects the definition and the graininess of the image, and also is a parameter determined when the product is positioned, which determines the desired effect of the image, and specifically, reference may be made to the example of fig. 9. The size of the display array in the longitudinal direction is determined according to the longitudinal resolution required by the display image and the pixel spacing required by the display array, for example, a video source adopts 1920 x 1080 resolution high definition signal input, according to a panoramic display scheme, the longitudinal resolution of the display image takes 1/4 clipping area, an LCD liquid crystal screen with the pixel spacing of 0.63mm is selected on the premise of ensuring that the image observed by human eyes is clear and no obvious granular sensation, and the longitudinal size is 270 x 0.63mm.

Based on the imaging principle, the display image on the imaging plane and the virtual image presented on the windshield are optically symmetrical relative to the windshield (refer to fig. 10 in particular), so that the position and angle of the virtual image can be changed by adjusting the imaging plane, thereby being suitable for the observation directions of people with different heights for viewing information. Correspondingly, the imaging screen is provided with a first adjusting device matched with the vehicle center console, and the first adjusting device can enable the imaging surface of the imaging screen to be at different angles, such as a person with a higher viewpoint, the overlooking angle can be smaller, so that the angle of the imaging surface can be adjusted to enable the virtual image to face the viewpoint direction more, and vice versa, so that different observation directions are adapted. Optionally, the imaging screen may be further provided with a second adjusting device that cooperates with the console in the vehicle, and the second adjusting device may adjust the distance between the imaging surface of the imaging screen and the windshield, so as to change the height of the virtual image on the windshield, for example, the position of the virtual image is slightly biased to the bottom edge of the windshield, which is unfavorable for the rear passenger to watch, at this time, the imaging surface may be separated from a point of the windshield by using the second adjusting device as needed, at this time, the virtual image may be adjusted upwards a little, and vice versa.

As shown in fig. 13, in some examples, the HUD display device may be integrated on a vehicle such as an automobile, and corresponding parameter information is projected on the bottom position of the windshield by projection, so that any person in the vehicle can view various information on the bottom of the windshield. The vehicle is not limited to the above-described automobile, and may include buses, trucks, excavators, motorcycles, trains, high-speed rails, ships, yachts, airplanes, spacecraft, and the like. The projected windshield is not limited to the front windshield of the automobile, and may be a transparent surface in other positions.

In summary, the vehicle center console is embedded with the imaging screen with the width equivalent to that of the center console, the imaging surface of the imaging screen is opposite to the bottom of the windshield, and display light generated by the imaging screen is reflected at the bottom of the windshield, so that human eyes can observe a virtual image of an image displayed by the imaging screen on the windshield along the reflected light. The utility model can greatly increase the width of the projection picture of the HUD display device and improve the watching experience of the primary driver and the secondary driver.

It should be understood that while this specification includes examples, any of these examples does not include only a single embodiment, and that this depiction of the specification is for clarity only. Those skilled in the art will recognize that the embodiments of the present utility model may be combined as appropriate with one another to form other embodiments as would be apparent to one of ordinary skill in the art.

The above list of detailed descriptions is only specific to practical embodiments of the present utility model, and they are not intended to limit the scope of the present utility model, and all equivalent embodiments or modifications that do not depart from the teachings of the present utility model should be included in the scope of the present utility model.

Claims (10)

1. A display device, characterized by comprising:

an imaging screen integrated in a vehicle center console, the imaging screen having an imaging surface opposite to a windshield, the imaging surface emitting display light to be projected at a bottom position of the windshield so that a virtual image corresponding to a display image of the imaging screen is presented at the bottom position of the windshield;

the imaging screen comprises a first part corresponding to a main driver and a second part corresponding to a secondary driver, wherein the first part and the second part are provided with display arrays for displaying images, so that part of the virtual image is opposite to the main driver and part of the virtual image is opposite to the secondary driver;

and the two sides of the first part and the second part which are integrated are not provided with display arrays for displaying images, so that gaps are formed between the virtual image and the two side edges of the windshield.

2. The display device of claim 1, wherein the imaging screen further comprises a third portion interposed between the first portion and the second portion, the third portion having a display array for displaying images.

3. The display device of claim 2, wherein the first, second, and third portions of the imaging screen are integrally formed.

4. A display device according to any one of claims 1-3, wherein the display array comprises an image source for displaying an image and a backlight for providing brightness to the image source.

5. A display device as claimed in any one of claims 1 to 3, characterized in that the size of the display array in the portrait direction is determined in dependence on the required portrait resolution of the displayed image and the required pixel pitch of the display array.

6. A display device as claimed in claim 1, characterized in that a holographic film is provided in cooperation with the projection at least at the bottom of the windscreen presenting the virtual image.

7. The display device of claim 6, wherein the holographic film is affixed to the entire inner surface of the windshield.

8. A display device as claimed in claim 1, characterized in that the imaging plane and the virtual image are optically symmetrical with respect to the windscreen, the angle of the imaging plane being determined in dependence on the desired virtual image angle in the viewing direction.

9. A display device according to claim 8, wherein the imaging screen is provided with first adjustment means cooperating with the vehicle centre console, the first adjustment means providing the angle of the imaging plane with a first or second state to accommodate a viewing direction from a first height or a viewing direction from a second height.

10. A vehicle comprising a display device according to any one of claims 1-9.