CN108656952B

CN108656952B - Vehicle-mounted information display device, vehicle-mounted information display method and transportation tool

Info

Publication number: CN108656952B
Application number: CN201710213610.3A
Authority: CN
Inventors: 郎海涛; 周召涛; 杨佳
Original assignee: Ningbo Sunny Automotive Optech Co Ltd
Current assignee: Ningbo Sunny Automotive Optech Co Ltd
Priority date: 2017-04-01
Filing date: 2017-04-01
Publication date: 2021-02-09
Anticipated expiration: 2037-04-01
Also published as: CN108656952A

Abstract

The invention provides a vehicle-mounted information display device, a vehicle-mounted information display method and a transportation tool. The on-vehicle information display device includes: a lighting unit; the light splitting unit is used for splitting the light rays generated by the lighting unit into first light rays and second light rays, wherein the first light rays and the second light rays are transmitted along different light paths; a first display unit for displaying first information based on the first light; and a second display unit for displaying second information based on the second light. The vehicle-mounted information display device, the vehicle-mounted information display method and the transportation tool can realize a miniaturized vehicle-mounted information display system.

Description

Vehicle-mounted information display device, vehicle-mounted information display method and transportation tool

Technical Field

The present invention relates to the field of in-vehicle display systems, and more particularly to an in-vehicle information display device, an in-vehicle information display method, and a transportation tool of an in-vehicle information display system that can be miniaturized.

Background

The in-vehicle information display system can provide a driver with various information during the driving of the vehicle, thereby assisting the driver in better driving the vehicle. Specifically, the conventional in-vehicle information display system is typified by an instrument panel on a center console. Also, vehicles are basically equipped with a dashboard on a center console to display various types of driving information, such as vehicle speed, engine Revolutions Per Minute (RPM), temperature, and fuel amount.

However, in order to meet the driving requirements, a driver needs to constantly switch the line of sight at multiple positions such as an instrument panel, a front road condition, a rearview mirror and the like during driving, and as the functions of a vehicle-mounted system are improved, more and more vehicles integrate the GPS function, so that the user may need to frequently watch the GPS during driving, which may cause unsafe driving.

In view of the above problems, in-vehicle head-up displays (or heads-up displays, HUDs) have been developed in recent years. Through the vehicle-mounted head-up display, a driver can acquire part of important information closely related to driving without lowering head in the normal driving process. Through the display device, important information parameters (such as speed, navigation information and the like) of the vehicle are projected and imaged in front of the sight line of the driver, so that the sight line transfer caused by looking over instrument data by lowering the head of the driver in the driving process is avoided, and the driving safety is greatly improved.

However, the existing vehicle-mounted head-up display is large in size and inconvenient to design and install due to limited space of a console in the vehicle.

Accordingly, there is a need for an improved in-vehicle information display apparatus and display method.

Disclosure of Invention

The present invention has been made to address the above-mentioned drawbacks and deficiencies of the prior art, and it is an object of the present invention to provide a novel and improved in-vehicle information display apparatus, in-vehicle information display method, and transportation means that enable a miniaturized in-vehicle information display system.

An object of the present invention is to provide a vehicle-mounted information display apparatus, a vehicle-mounted information display method, and a transportation that can greatly reduce an installation space by sharing an illumination unit for different display systems.

An object of the present invention is to provide a vehicle-mounted information display apparatus, a vehicle-mounted information display method, and a transportation vehicle, which can improve light source efficiency and reduce overall energy consumption by sharing an illumination unit for different display systems.

An object of the present invention is to provide a vehicle-mounted information display apparatus, a vehicle-mounted information display method, and a transportation vehicle, which can greatly reduce heat generated from a light source and improve the overall stability of a vehicle-mounted information display system and a central control system by sharing an illumination unit for different display systems.

An object of the present invention is to provide a vehicle-mounted information display apparatus, a vehicle-mounted information display method, and a transportation vehicle that ensure display quality of a display system while reducing an integration volume by providing different optical element layouts.

An object of the present invention is to provide an in-vehicle information display apparatus, an in-vehicle information display method, and a transportation means, which can provide an overall solution matching for different vehicle types by providing different optical element layouts.

An object of the present invention is to provide a vehicle-mounted information display apparatus, a vehicle-mounted information display method, and a transportation that can effectively avoid the limitation of the front and rear depth spaces inside a console by arranging optical elements according to the position of the console, and reduce the volume required for installation by utilizing the surplus of the lateral internal space.

According to an aspect of the present invention, there is provided an in-vehicle information display apparatus including: a lighting unit; a light splitting unit for splitting the light generated by the illumination unit into a first light and a second light, wherein the first light and the second light propagate along different light paths; a first display unit for displaying first information based on the first light; and a second display unit for displaying second information based on the second light.

In the above-described in-vehicle information display device, the first display unit is an instrument panel display unit; and, the second display unit is a heads-up display unit.

In the above vehicle-mounted information display device, the first light is light formed by the light generated by the illumination unit being transmitted by the light splitting unit; and the second light is formed by reflecting the light generated by the lighting unit by the light splitting unit.

In the above vehicle-mounted information display device, the light splitting unit has different reflection/refraction ratios according to the light energy requirements of the first display unit and the second display unit, so that the light intensity of the first light ray meets the light energy requirement of the first display unit, and the light intensity of the second light ray meets the light energy requirement of the second display unit.

In the above vehicle-mounted information display device, the vehicle-mounted information display device further includes: and the light path adjusting unit is used for adjusting the light path of the first light ray and/or the second light ray so as to guide the first light ray and/or the second light ray to the corresponding first display unit and/or second display unit.

In the above vehicle-mounted information display device, the vehicle-mounted information display device further includes: and the light homogenizing unit is used for adjusting the light uniformity of the first light and/or the second light so as to guide the first light and/or the second light with improved light uniformity to the corresponding first display unit and/or second display unit.

In the above vehicle-mounted information display device, the vehicle-mounted information display device further includes: and the projection unit is used for projecting second light which passes through the second display unit and carries the display information of the second display unit onto a front windshield of the vehicle so that a user can see an image presented in front of the sight line of the user.

In the above vehicle-mounted information display device, the vehicle-mounted information display device further includes: and the projection imaging unit is used for projecting second light rays which pass through the second display unit and carry the display information of the second display unit to a reflection unit with a preset curvature arranged in the vehicle, so that a user can see an image presented in front of the sight line of the user through the reflection unit.

In the above-described in-vehicle information display device, two or more optical elements among the respective optical elements of the in-vehicle information display device are arranged longitudinally in the longitudinal direction of the vehicle.

In the above-described in-vehicle information display device, two or more optical elements among the respective optical elements of the in-vehicle information display device are arranged laterally in the width direction of the vehicle.

According to another aspect of the present invention, there is provided a vehicle-mounted information display method including: generating light for on-vehicle information display by an illumination unit; dividing light generated by the illumination unit into a first light and a second light by a light splitting unit, wherein the first light and the second light propagate along different light paths; displaying, by a first display unit, first information based on the first light; and displaying, by a second display unit, second information based on the second light.

In the above vehicle-mounted information display method, the first display unit is an instrument panel display unit; and, the second display unit is a heads-up display unit.

In the above vehicle-mounted information display method, the first light is formed by the light generated by the illumination unit being transmitted by the light splitting unit; and the second light is formed by reflecting the light generated by the lighting unit by the light splitting unit.

In the above vehicle-mounted information display method, the light splitting unit has different reflection/refraction ratios according to the light energy requirements of the first display unit and the second display unit, so that the light intensity of the first light ray meets the light energy requirement of the first display unit, and the light intensity of the second light ray meets the light energy requirement of the second display unit.

In the above vehicle-mounted information display method, after the light beam generated by the illumination unit is divided into the first light beam and the second light beam by the light splitting unit, the method further includes: adjusting a light path of the first light ray and/or the second light ray to guide the first light ray and/or the second light ray to the corresponding first display unit and/or second display unit.

In the above vehicle-mounted information display method, after the light beam generated by the illumination unit is divided into the first light beam and the second light beam by the light splitting unit, the method further includes: and adjusting the light uniformity of the first light rays and/or the second light rays to guide the first light rays and/or the second light rays with improved light uniformity to the corresponding first display unit and/or second display unit.

In the above vehicle-mounted information display method, after the second information is displayed by the second display unit based on the second light, further comprising: and projecting a second light ray passing through the second display unit and carrying display information of the second display unit onto a front windshield of the vehicle so that the user sees an image presented in front of his line of sight.

In the above vehicle-mounted information display method, after the second information is displayed by the second display unit based on the second light, further comprising: and projecting a second light ray passing through the second display unit and carrying display information of the second display unit to a reflection unit having a predetermined curvature provided in the vehicle, so that the user sees an image presented in front of his line of sight through the reflection unit.

In the above vehicle-mounted information display method, the method further includes: two or more optical elements among the respective optical elements for on-vehicle information display are arranged longitudinally in the longitudinal direction of the vehicle.

In the above vehicle-mounted information display method, the method further includes: two or more optical elements among the respective optical elements for on-vehicle information display are arranged laterally in the width direction of the vehicle.

According to still another aspect of the present invention, there is provided a transportation vehicle including an in-vehicle information display device for displaying information to a driver of the transportation vehicle, the in-vehicle information display device including: a lighting unit; a light splitting unit for splitting the light generated by the illumination unit into a first light and a second light, wherein the first light and the second light propagate along different light paths; a first display unit for displaying first information based on the first light; and a second display unit for displaying second information based on the second light.

In the above transportation means, the first display unit is an instrument panel display unit; and, the second display unit is a heads-up display unit.

In the transportation vehicle, the first light is formed by the light generated by the illumination unit after being transmitted by the light splitting unit; and the second light is formed by reflecting the light generated by the lighting unit by the light splitting unit.

In the transportation vehicle, the light splitting unit has different reflection/refraction ratios according to the light energy requirements of the first display unit and the second display unit, so that the light intensity of the first light ray meets the light energy requirement of the first display unit, and the light intensity of the second light ray meets the light energy requirement of the second display unit.

In the above transportation vehicle, the in-vehicle information display device further includes: and the light path adjusting unit is used for adjusting the light path of the first light ray and/or the second light ray so as to guide the first light ray and/or the second light ray to the corresponding first display unit and/or second display unit.

In the above transportation vehicle, the in-vehicle information display device further includes: and the light homogenizing unit is used for adjusting the light uniformity of the first light and/or the second light so as to guide the first light and/or the second light with improved light uniformity to the corresponding first display unit and/or second display unit.

In the above transportation vehicle, the in-vehicle information display device further includes: and the projection unit is used for projecting second light which passes through the second display unit and carries the display information of the second display unit onto a front windshield of the vehicle so that a user can see an image presented in front of the sight line of the user.

In the above transportation vehicle, the in-vehicle information display device further includes: and the projection imaging unit is used for projecting second light rays which pass through the second display unit and carry the display information of the second display unit to a reflection unit with a preset curvature arranged in the vehicle, so that a user can see an image presented in front of the sight line of the user through the reflection unit.

In the above vehicle, two or more optical elements of the respective optical elements of the in-vehicle information display device are arranged longitudinally in a longitudinal direction of the vehicle.

In the above-described transportation vehicle, two or more optical elements among the respective optical elements of the in-vehicle information display device are arranged laterally in a width direction of the transportation vehicle.

According to the vehicle-mounted information display device, the vehicle-mounted information display method and the transportation tool, different display systems can share the lighting unit, so that the installation space is greatly reduced, the light source efficiency is improved, the overall energy consumption is reduced, the heat generated by the light source is reduced to a great extent, and the overall stability of the vehicle-mounted information display system and the central control system is improved.

According to the vehicle-mounted information display device, the vehicle-mounted information display method and the transportation tool, the display quality of the display system can be ensured while the integration volume is reduced by providing different optical element layouts, and an overall solution suitable for different vehicle types is provided.

Drawings

Fig. 1 is a schematic block diagram of an in-vehicle information display apparatus according to an embodiment of the present invention;

fig. 2A and 2B are schematic views showing an in-vehicle information display apparatus according to a first embodiment of the invention;

fig. 3A and 3B are schematic views showing an in-vehicle information display apparatus according to a second embodiment of the invention;

fig. 4A and 4B are schematic views showing an in-vehicle information display apparatus according to a third embodiment of the invention;

fig. 5 is a schematic flowchart of an in-vehicle information display method according to an embodiment of the present invention;

FIG. 6 is a schematic block diagram of a vehicle according to an embodiment of the present invention.

Detailed Description

The following description is presented to disclose the invention so as to enable any person skilled in the art to practice the invention. The preferred embodiments in the following description are given by way of example only, and other obvious variations will occur to those skilled in the art. The basic principles of the invention, as defined in the following description, may be applied to other embodiments, variations, modifications, equivalents, and other technical solutions without departing from the spirit and scope of the invention.

The terms and words used in the following specification and claims are not limited to the literal meanings, but are used only by the inventors to enable a clear and consistent understanding of the invention. Accordingly, it will be apparent to those skilled in the art that the following descriptions of the various embodiments of the present invention are provided for illustration only and not for the purpose of limiting the invention as defined by the appended claims and their equivalents.

It is understood that the terms "a" and "an" should be interpreted as meaning that a number of one element or element is one in one embodiment, while a number of other elements is one in another embodiment, and the terms "a" and "an" should not be interpreted as limiting the number.

While ordinal numbers such as "first," "second," etc., will be used to describe various components, those components are not limited herein. The term is used only to distinguish one element from another. For example, a first component could be termed a second component, and, similarly, a second component could be termed a first component, without departing from the teachings of the inventive concepts. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

The terminology used herein is for the purpose of describing various embodiments only and is not intended to be limiting. As used herein, the singular forms are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises" and/or "comprising," when used in this specification, specify the presence of stated features, numbers, steps, operations, components, elements, or combinations thereof, but do not preclude the presence or addition of one or more other features, numbers, steps, operations, components, elements, or groups thereof.

Terms used herein, including technical and scientific terms, have the same meaning as terms commonly understood by one of ordinary skill in the art, unless otherwise defined. It will be understood that terms defined in commonly used dictionaries have meanings that are consistent with their meanings in the prior art.

The invention is described in further detail below with reference to the following figures and detailed description:

[ concept of the invention ]

According to an aspect of an embodiment of the present invention, there is provided an in-vehicle information display apparatus including: a lighting unit; the light splitting unit is used for splitting the light rays generated by the lighting unit into first light rays and second light rays, wherein the first light rays and the second light rays are transmitted along different light paths; a first display unit for displaying first information based on the first light; and a second display unit for displaying second information based on the second light.

Fig. 1 is a schematic block diagram of an in-vehicle information display apparatus according to an embodiment of the present invention. As shown in fig. 1, the in-vehicle information display apparatus 100 according to the embodiment of the present invention includes: a lighting unit 101; a light splitting unit 102 connected to the illumination unit 101, for splitting the light generated by the illumination unit 101 into a first light and a second light, wherein the first light and the second light propagate along different light paths; a first display unit 103 connected to the light splitting unit 102, for displaying first information based on the first light formed by the light splitting unit 102; and a second display unit 104 connected to the light splitting unit 102 for displaying second information based on the second light formed by the light splitting unit 102.

Therefore, in the in-vehicle information display device according to the embodiment of the invention, by integrating the illumination units of the first display unit and the second display unit, the first display unit and the second display unit can share the same illumination unit, thereby reducing the space occupied by installing the illumination units respectively. Here, it can be understood by those skilled in the art that the volume of the illumination unit occupies a significant portion with respect to the volume of the entire system in order to improve the display effect, and thus, the space required for installation of the device can be greatly reduced by the in-vehicle information display device according to the embodiment of the present invention.

In addition, the first display unit and the second display unit share the same illumination unit, so that the utilization efficiency of the light source of the illumination unit can be improved, and the overall energy consumption of the vehicle-mounted information display device is reduced.

In addition, the first display unit and the second display unit share the same illumination unit, so that the heat generated by a light source of the illumination unit can be reduced, and the overall stability of the vehicle-mounted information display device and the central control system is improved.

In the above-described in-vehicle information display device, the first display unit is an instrument panel display unit, and the second display unit is a head-up display unit.

As described above, among the driving information display systems of the vehicle, the dashboard display system is the most commonly used part. After a long time of development, the dashboard display technology has matured considerably, and users have developed a habit of learning the driving condition of the vehicle by viewing the driving information displayed on the dashboard. Therefore, in the in-vehicle information display apparatus according to the embodiment of the present invention, the first display unit is provided as the instrument panel display unit, so that the existing display system of the vehicle is utilized to the maximum extent, and the cost of the entire system modification can be reduced. Meanwhile, the user experience can be enhanced as the use habit of the user does not need to be changed excessively.

In addition, the heads-up display, which is a recently developed vehicle-mounted information display technology, enables a user to see information required during driving directly in front of a line of sight without intentionally changing the line of sight, thereby enabling driving safety to be significantly improved while enhancing user experience.

Here, it can be understood by those skilled in the art that, in the in-vehicle information display apparatus according to the embodiment of the present invention, the instrument panel display unit and the heads-up display unit are only preferred examples. The display unit may be other types of display units according to specific needs, for example, as the degree of intelligence of the automobile increases, more and more automobiles are provided with display screens at the center console. The display screen can display various entertainment culture information to the user besides displaying various information to the user, thereby obviously expanding the functionality of the automobile. Therefore, the display unit of the in-vehicle information display apparatus according to the embodiment of the invention may also include a display screen on the center console, or the display unit may include, for example, a display screen provided at the rear of the seat of the vehicle for displaying information to the rear passenger, or the like.

Also, in the in-vehicle information display apparatus according to the embodiment of the present invention, the specific type of the above-described display unit is not limited, and for example, the display unit may be various types of displays such as a liquid crystal display or the like as actually required. In addition, if necessary, the liquid crystal display may also be combined with a touch unit, thereby implementing a touch display.

That is, regardless of where the display unit included in the in-vehicle information display apparatus is located in the vehicle, and regardless of the specific type of display of the display unit, they can share one illumination unit according to the principle of the present invention, thereby achieving the advantageous effects of the present invention.

Also, in the in-vehicle information display apparatus according to the embodiment of the present invention, the specific configuration of the illumination unit may also be changed according to the type of display to which it is applied. For example, the lighting unit may be an LED lighting device, or the lighting unit may be another type of high brightness light source, such as an array LED, or a higher brightness laser light source.

In the above vehicle-mounted information display device, the first light is formed by transmitting the light generated by the illumination unit through the light splitting unit, and the second light is formed by reflecting the light generated by the illumination unit through the light splitting unit.

Here, in order to realize that the light emitted by the illumination unit is shared by the first display unit and the second display unit, in the in-vehicle information display device according to the embodiment of the present invention, the light generated by the illumination unit is reflected and refracted by the light splitting unit, thereby ensuring that the light generated by the illumination unit is divided by the light splitting unit into the first light and the second light directed to the first display unit and the second display unit, respectively.

Of course, the light splitting unit of the vehicle-mounted information display device according to the embodiment of the present invention is not limited to splitting the light emitted by the illumination unit into the first light and the second light by reflection and refraction, and other types of light splitting units may be used, and the embodiment of the present invention is not intended to limit the light splitting unit in any way.

Also, it can be understood by those skilled in the art that the light splitting unit of the in-vehicle information display device according to the embodiment of the present invention simply splits the light generated from the illumination unit into the first light and the second light having reduced intensity without changing the composition of the refracted or reflected light. Specifically, the light splitting unit of the vehicle-mounted information display device according to the embodiment of the invention divides the white light emitted by the illumination unit into the first white light ray and the second white light ray with reduced intensity, rather than dividing the white light emitted by the illumination unit into, for example, red light, green light, blue light, etc. with different color components.

In addition, the light splitting unit of the vehicle-mounted information display device according to the embodiment of the invention may adjust the transmission/reflection ratio according to actual needs, for example, the light splitting unit includes, but is not limited to, a semi-reflective and semi-transmissive light splitting unit, and a light splitter with different transmission/reflection ratios is also adopted. For example, when the brightness of the light source required by the first display unit and the second display unit is different, the actual light energy distribution can be matched according to specific requirements, so as to meet the specific requirements of different display systems.

That is, in the above vehicle-mounted information display device, the light splitting unit further includes a light splitting unit having different reflection/refraction ratios according to the light energy requirements of the first display unit and the second display unit, so that the light intensity of the first light beam meets the light energy requirement of the first display unit, and the light intensity of the second light beam meets the light energy requirement of the second display unit.

In the above vehicle-mounted information display device, the light path adjusting unit is further included for adjusting the light path of the first light ray and/or the second light ray so as to guide the first light ray and/or the second light ray to the corresponding first display unit and/or the second display unit.

In particular, subject to the spatial limitations of vehicles, particularly the limited amount of space in the center console, in the in-vehicle information display apparatus according to the embodiment of the present invention, depending on the configuration of specific optical elements, an optical path adjusting unit such as a mirror may be required to adjust the optical path of the first light ray and/or the second light ray so that the first light ray and the second light ray divided by the light dividing unit can be properly directed to the first display unit and the second display unit. Of course, those skilled in the art can understand that, depending on different positions of the illumination unit and the first and second display units, the optical path adjusting unit of the vehicle-mounted information display device according to the embodiment of the present invention may require a plurality of optical elements, or may not require the optical path adjusting unit at all, and the light emitted by the illumination unit may directly reach the first and second display units after being divided by the light splitting unit. Accordingly, the embodiments of the present invention are not intended to be limiting in any way.

In the above vehicle-mounted information display device, the device further comprises a light uniformizing unit for adjusting the light uniformity of the first light and/or the second light to guide the first light and/or the second light with improved light uniformity to the corresponding first display unit and/or second display unit.

In particular, in the vehicle-mounted information display apparatus according to the embodiment of the invention, since the volume of the optical element is reduced as much as possible, but at the same time, the brightness of the illumination is also required to be ensured, the light emitted by the illumination unit may still be a high-brightness thin beam after being divided into the first light and the second light. In this case, such light may have disadvantages in being a light source of the first display unit or the second display unit. For example, if the fine light beam is directly irradiated on the first display unit or the second display unit, a problem may occur that the light beam of the central portion of the first display unit or the second display unit is too strong and the light beam of the peripheral portion is too weak, thereby affecting the display effect of the first display unit or the second display unit. Therefore, in the in-vehicle information display apparatus according to the embodiment of the invention, the light uniformizing unit for improving the light uniformity of the first light and/or the second light is further included, so that the first display unit and/or the second display unit can display an image based on the first light and the second light as uniform as possible to improve the display quality of the first display unit and/or the second display unit.

Also, if the first light and/or the second light incident to the first display unit and/or the second display unit itself has good light uniformity, or in the case where the display quality of the first display unit and/or the second display unit itself is not high in demand, the light uniformizing unit may be omitted from the viewpoints of saving the space for disposing the optical elements, simplifying the system configuration, and the like.

In addition, in the vehicle-mounted information display device according to the embodiment of the invention, the illumination mode of the instrument panel display system may be a mode other than the mode of illumination after passing through the light homogenizing sheet, for example, the mode of illumination through the light guide device may be adopted, so that the flexibility of installation of the instrument panel display system may be further improved.

In the above vehicle-mounted information display apparatus, a projection unit for projecting a second light ray passing through the second display unit and carrying display information of the second display unit onto a front windshield of the vehicle so that the user sees an image presented in front of his line of sight is further included.

As described above, since the optical components of the in-vehicle information display device according to the embodiment of the present invention are generally installed at the center console position of the vehicle, in order to ensure that the light passing through the second display unit, i.e., the head-up display unit, can be projected onto the front windshield of the vehicle and then reach the eyes of the user through the reflection of the front windshield, it may be necessary to provide a projection unit on the light path after passing through the second display unit to project the second light after passing through the second display unit onto the front windshield of the vehicle. For example, the projection unit includes a curved mirror having a predetermined curvature. Thus, the second light which displays the display information of the head-up display unit can reach the eyes of the user driving the vehicle after being reflected by the front windshield of the vehicle, so that the user can see the virtual image formed in front of the sight line.

In the above vehicle-mounted information display apparatus, a projection imaging unit for projecting a second light ray passing through the second display unit and carrying display information of the second display unit to a reflection unit having a predetermined curvature provided in the vehicle so that the user sees an image presented in front of his line of sight through the reflection unit is further included.

In another example, instead of the above-described projection unit that projects the second light rays passing through the second display unit onto the front windshield of the vehicle, the in-vehicle information display device according to the embodiment of the invention includes a projection imaging unit that includes a reflection unit having a predetermined curvature, such as a refractor, so that the second light rays carrying display information after passing through the second display unit can be directly reflected to the eyes of the user who is driving the vehicle through the reflection unit, thereby allowing the user to see a virtual image imaged in front of the line of sight. By adopting the projection imaging unit instead of the projection unit, the vehicle-mounted information display device according to the embodiment of the invention has the possibility of further reducing the installation volume, thereby facilitating the integration of the head-up display system and the central control system.

Of course, it will be understood by those skilled in the art that, in the in-vehicle information display device according to the embodiment of the present invention, the use of the above-described projection unit or the above-described projection imaging unit requires the overall adjustment of the optical path, particularly the optical path of the second light passing through the second display unit, rather than the replacement of only a single reflection element, which will be specifically described in the following embodiments.

In addition, in the vehicle-mounted information display device according to the embodiment of the invention, it is only necessary to ensure that the second light passing through the head-up display unit and carrying the image information displayed by the head-up display unit reaches the eye position of the user driving the vehicle. Therefore, the vehicle-mounted information display device according to the embodiment of the invention is not limited to the projection unit, the projection imaging unit, or other optical elements for adjusting the optical path, and even directly projects the second light passing through the second display unit to the eye position of the user without passing through any optical element.

In the above-described in-vehicle information display device, two or more of the respective optical elements may be arranged longitudinally in the longitudinal direction of the vehicle or transversely in the width direction of the vehicle. In which the design of the overall optical path of the optical element can be made relatively simple when the optical element is arranged longitudinally, but at the same time does not contribute to a reduction in the installation volume. In contrast, when the optical elements are transversely arranged, the limitation of the front and back depth space of the console is avoided, surplus of the transverse space is utilized, and the volume required by installation is reduced.

Here, the optical elements may include two or more of the aforementioned illumination unit, light splitting unit, light path adjusting unit, light unifying unit, and projection unit in accordance with a specific layout.

Also, as for the on-vehicle information display device according to the embodiment of the present invention as a whole, the installation position is not particularly limited, for example, it is not limited to be installed below and on the left side of the center console (i.e., the position where the instrument panel is usually located), but may be installed in other positions according to the specific implementation as long as the manner in which the light source is shared by two or more display units is satisfied.

Hereinafter, the in-vehicle information display device according to the embodiment of the present invention will be further described by way of specific examples.

[ first embodiment ]

Fig. 2A and 2B are schematic views showing an in-vehicle information display apparatus according to a first embodiment of the present invention. Fig. 2A shows a schematic view of the overall arrangement of the in-vehicle information display device according to the first embodiment of the invention with respect to the vehicle, and fig. 2B shows an enlarged schematic view of the in-vehicle information display device according to the first embodiment of the invention.

As shown in fig. 2A and 2B, the in-vehicle information display device according to the first embodiment of the present invention includes: the device comprises a (high-brightness) light source 1, a spectroscope 2, a total reflection mirror 3, a color HUD-LCD display screen 4, a free-form surface mirror 5, a light homogenizing sheet 7 and an instrument panel LCD display screen 8.

In a specific operation, a directed light beam emitted by the (high brightness) light source 1, i.e. the aforementioned lighting unit, e.g. an LED lighting unit, is reflected by the first surface of the beam splitter at the beam splitter 2, i.e. the aforementioned beam splitter unit, in part, while another part is directly transmitted. The reflected light is used to provide illumination for the color HUD-LCD display screen 4, i.e. the aforementioned second display unit. Then, the light beam carrying the color HUD-LCD display information is reflected by the free-form surface mirror 5, directed to the windshield (indicated by reference numeral 6 in fig. 2A and 2B), and reflected by the windshield to enter the eyes of the driver (indicated by reference numeral 9 in fig. 2A), so that the driver can observe a virtual image (indicated by reference numeral 10 in fig. 2A) imaged in front of the line of sight, thereby realizing a heads-up display system. Here, the projection unit is an entire optical system including the curved mirror 5 and the windshield 6. On the other hand, the light beam transmitted from the beam splitter is reflected by the total reflection mirror 3, i.e., the light path adjusting unit, and then is reflected by the second surface of the beam splitter again, and then is transmitted by the light uniformizing sheet 7, i.e., the light uniformizing unit, and is used for providing uniform illumination for the LCD display screen 8 of the instrument panel, i.e., the first display unit, so that a display system of the instrument panel or a non-head-up display system is realized.

Thus, the vehicle-mounted information display device according to the first embodiment of the present invention integrates the illumination module of the head-up display system and the illumination module of the instrument panel display system, so as to reduce the installation space and facilitate the integration of the vehicle-mounted information display system.

[ second embodiment ]

Fig. 3A and 3B are schematic views showing an in-vehicle information display apparatus according to a second embodiment of the present invention. Fig. 3A shows a schematic view of the overall arrangement of an in-vehicle information display device according to a second embodiment of the invention with respect to a vehicle, and fig. 3B shows an enlarged schematic view of the in-vehicle information display device according to the second embodiment of the invention.

As shown in fig. 3A and 3B, the in-vehicle information display device according to the second embodiment of the present invention includes: the device comprises a (high-brightness) light source 1, a spectroscope 2, a total reflection mirror 3, a color HUD-LCD display screen 4, a refractor 5, a light homogenizing sheet 6 and an instrument panel LCD display screen 7.

In a specific operation, a directed light beam emitted by the (high brightness) light source 1, i.e. the aforementioned lighting unit, e.g. an LED lighting unit, is reflected by the first surface of the beam splitter at the beam splitter 2, i.e. the aforementioned beam splitter unit, in part, while another part is directly transmitted. The reflected light is used to provide illumination for the color HUD-LCD display screen 4, i.e. the aforementioned second display unit. Then, the light beam carrying the color HUD-LCD display information is directly incident on, for example, a refractor having a certain curvature, and enters the eyes of the driver after being reflected by the refractor (shown by reference numeral 8 in fig. 3A), so that the driver can observe a virtual image (shown by reference numeral 9 in fig. 3A) imaged in front of the line of sight, thereby realizing a heads-up display system. Here, the aforementioned projection imaging unit is an entire optical system including a refractor. On the other hand, the light beam transmitted from the beam splitter is reflected by the total reflection mirror 3, i.e., the light path adjusting unit, and then is reflected by the second surface of the beam splitter again, and then is transmitted through the light uniformizing sheet 6, i.e., the light uniformizing unit, and is used for providing uniform illumination for the LCD display screen 7 of the instrument panel, i.e., the first display unit, so that a display system of the instrument panel or a non-head-up display system is realized.

The vehicle-mounted information display device of the second embodiment of the invention not only achieves the effects of reducing the installation space and facilitating the integration of the vehicle-mounted information display system, but also greatly reduces the volume required by installation because the light carrying the color HUD-LCD display information is directly projected to Combiner, thereby further promoting the integration of the head-up display system and the instrument panel display system and further promoting the integration of the head-up display system and the whole central control system.

[ third embodiment ]

Fig. 4A and 4B are schematic views showing an in-vehicle information display apparatus according to a third embodiment of the present invention. Fig. 4A shows a schematic view of the overall arrangement of an in-vehicle information display device according to a third embodiment of the invention with respect to a vehicle, and fig. 4B shows an enlarged schematic view of the in-vehicle information display device according to the third embodiment of the invention.

As shown in fig. 4A and 4B, the in-vehicle information display device according to the third embodiment of the invention includes: the device comprises a (high-brightness) light source 1, a spectroscope 2, a total reflector 3, a color HUD-LCD display screen 4, a refraction reflector 5, a free-form surface mirror 6, a light homogenizing sheet 8 and an instrument panel LCD display screen 9.

In a specific operation, a light beam emitted by a laterally mounted (high brightness) light source 1, i.e. the aforementioned lighting unit, such as an LED lighting unit, is reflected by a first surface of the beam splitter at the beam splitter 2, i.e. the aforementioned beam splitter unit, in part, while another part is directly transmitted. The transmitted light is used to illuminate the diagonal HUD-LCD display screen 4, i.e. the aforementioned second display unit. Then, the light beam carrying the color HUD-LCD display information is reflected by the folding mirror 5 to the free-form surface mirror 6 (here, the folding mirror 5 and the free-form surface mirror 6 collectively correspond to the aforementioned projection unit), reflected by the free-form surface mirror 6, and then emitted to the windshield (shown by reference numeral 7 in fig. 4A). Then, the light is reflected into the eyes of the driver via the windshield (shown by reference numeral 10 in fig. 4A and 4B) so that the driver observes a virtual image (shown by reference numeral 11 in fig. 4A) in front of the line of sight, thereby realizing the head-up display system. Here, the projection unit is an entire optical system including the folding mirror 5, the curved mirror 6, and the windshield 7. On the other hand, the light beam reflected by the beam splitter 2 is transmitted through the beam splitter 2 after being reflected by the total reflection mirror 3, namely the light path adjusting unit, and is emitted to the light uniformizing sheet 8, namely the light uniformizing unit, and is used for providing uniform illumination for the LCD display screen 9 of the instrument panel, namely the first display unit, so that the instrument panel display system, or also called a non-head-up display system, is realized.

The vehicle-mounted information display device of the third embodiment of the invention not only achieves the effects of reducing the installation space and facilitating the integration of the vehicle-mounted information display system, but also skillfully avoids the limitation of the front and rear depth spaces of the center console due to the transverse installation of the lighting system along the width direction of the vehicle, and utilizes the surplus of the transverse space, thereby reducing the volume required by installation.

In summary, the first to third embodiments of the present invention provide three schemes of windshield direct-projection type, Combiner direct-projection type and oblique reflection type according to different arrangement modes of optical elements, so as to reduce the integrated volume and ensure the optical imaging performance of the head-up display system and the instrument panel display system. And, through adopting different optical element layout designs, can provide the whole solution with different motorcycle types assorted to the spatial property of different motorcycle types.

In addition, it can be understood by those skilled in the art that although the first to third embodiments described above show the vehicle-mounted information display device with a certain angle between the optical elements, such as the angle between the beam splitter and the total reflection mirror, the embodiments of the present invention are not limited to a specific angle, but can be adjusted accordingly according to the illumination requirements in the implementation of a specific product.

[ vehicle-mounted information display method ]

According to another aspect of the embodiments of the present invention, there is provided a vehicle-mounted information display method, including: generating light for on-vehicle information display by an illumination unit; dividing the light generated by the illumination unit into a first light and a second light by a light splitting unit, wherein the first light and the second light are transmitted along different light paths; displaying, by a first display unit, first information based on the first light; and displaying, by a second display unit, second information based on the second light.

Fig. 5 is a schematic flowchart of a vehicle-mounted information display method according to an embodiment of the present invention. As shown in fig. 5, the in-vehicle information display method according to the embodiment of the present invention includes: s1, generating light rays for displaying vehicle-mounted information by the lighting unit; s2, dividing the light generated by the illumination unit into a first light and a second light by a light splitting unit, wherein the first light and the second light propagate along different light paths; s3, displaying, by the first display unit, first information based on the first light; and S4, displaying second information based on the second light by the second display unit.

Here, those skilled in the art will understand that, although steps S3 and S4 are shown as being executed in parallel in fig. 5, this actually means that steps S3 and S4 are two steps that are parallel to each other and do not interfere with each other, and the execution or non-execution of either does not have any influence on the other. In addition, the first display unit and the second display unit display the first information and the second information with the first light and the second light as backlight during the display of the in-vehicle information. It is also possible for the dashboard display unit to display information without the need for a backlight. Therefore, for example, when the first display system is the instrument panel display unit, step S3 may not be performed, and only step S4 may be performed.

In the above vehicle-mounted information display method, after the light generated by the illumination unit is divided into the first light and the second light by the light splitting unit, the method further includes: and adjusting the light path of the first light ray and/or the second light ray to guide the first light ray and/or the second light ray to the corresponding first display unit and/or second display unit.

In the above vehicle-mounted information display method, after the light generated by the illumination unit is divided into the first light and the second light by the light splitting unit, the method further includes: and adjusting the light uniformity of the first light and/or the second light to guide the first light and/or the second light with improved light uniformity to the corresponding first display unit and/or second display unit.

In the above vehicle-mounted information display method, after the second information is displayed by the second display unit based on the second light, further comprising: and projecting a second light ray, which passes through the second display unit and carries display information of the second display unit, onto a front windshield of the vehicle, so that the user sees an image presented in front of his line of sight.

In the above vehicle-mounted information display method, after the second information is displayed by the second display unit based on the second light, further comprising: and projecting a second light ray passing through the second display unit and carrying display information of the second display unit to a reflection unit provided in the vehicle, so that the user sees an image presented in front of his line of sight through the reflection unit.

It will be understood by those skilled in the art that, in the method for displaying on-vehicle information according to an embodiment of the present invention, displaying the second information by the second display unit based on the second light may include only a process of passing light through the second display unit, specifically, the HUD-LCD display screen in the above-described embodiment. In addition, as can be understood by those skilled in the art, in the vehicle-mounted information display method according to the embodiment of the invention, displaying the second information by the second display unit based on the second light ray may also include the whole process that the light ray passes through the second display unit, and carries the display information of the second display unit to be projected onto a front windshield of the vehicle or other projection imaging units, and reaches the eye position of the driver after being reflected, so that the driver sees a virtual image presented in front of the line of sight.

Therefore, in the above vehicle-mounted information display method, displaying, by the second display unit, the second information based on the second light ray specifically includes: and projecting a second light ray, which passes through the second display unit and carries display information of the second display unit, onto a front windshield of the vehicle, so that the user sees an image presented in front of his line of sight.

In the above vehicle-mounted information display method, the displaying, by the second display unit, the second information based on the second light ray specifically includes: and projecting a second light ray passing through the second display unit and carrying display information of the second display unit to a reflection unit provided in the vehicle, so that the user sees an image presented in front of his line of sight through the reflection unit.

Here, it can be understood by those skilled in the art that other details in the in-vehicle information display method according to the embodiment of the present invention are completely the same as the corresponding details described previously with respect to the in-vehicle information display apparatus according to the embodiment of the present invention, and are not described again in order to avoid redundancy.

[ means of transportation ]

According to still another aspect of an embodiment of the present invention, there is provided a vehicle including an in-vehicle information display device for displaying information to a driver of the vehicle, the in-vehicle information display device including: a lighting unit; the light splitting unit is used for splitting the light rays generated by the lighting unit into first light rays and second light rays, wherein the first light rays and the second light rays are transmitted along different light paths; a first display unit for displaying first information based on the first light; and a second display unit for displaying second information based on the second light.

FIG. 6 is a schematic block diagram of a vehicle according to an embodiment of the present invention. As shown in fig. 6, a transportation vehicle 200 according to an embodiment of the present invention includes an in-vehicle information display device 210 for displaying information to a driver of the transportation vehicle 200, the in-vehicle information display device 210 including: an illumination unit 211; a light splitting unit 212 connected to the illumination unit 211, for splitting the light generated by the illumination unit 211 into a first light and a second light, wherein the first light and the second light propagate along different light paths; a first display unit 213 connected to the light splitting unit 212, for displaying first information based on the first light divided by the light splitting unit 212; and a second display unit 214 connected to the light splitting unit 212, for displaying second information based on the second light divided by the light splitting unit 212.

In the transportation means described above, the first display unit is an instrument panel display unit; and, the second display unit is a heads-up display unit.

In the transportation vehicle, the first light is formed by the light generated by the lighting unit after being transmitted by the light splitting unit; and the second light is formed by reflecting the light generated by the lighting unit by the light splitting unit.

In the above transportation vehicle, the in-vehicle information display device further includes: and the projection imaging unit is used for projecting second light which passes through the second display unit and carries the display information of the second display unit to a reflection unit arranged in the vehicle, so that a user can see an image presented in front of the sight line of the user through the reflection unit.

In the above-described transportation vehicle, two or more optical elements among the respective optical elements of the in-vehicle information display device are arranged longitudinally in the longitudinal direction of the transportation vehicle.

In the above-described transportation vehicle, two or more optical elements among the respective optical elements of the in-vehicle information display device are arranged laterally in the width direction of the transportation vehicle.

It will be appreciated by those skilled in the art that the in-vehicle information may be any form of information for presentation to the driver and/or passengers of the vehicle, including, for example, vehicle navigation information, or entertainment information other than traffic information, such as information related to radio functions, music playing functions, and the like.

In addition, the on-board information display device may be installed in various types of transportation vehicles, not limited to a family car in the conventional sense, but any other type of vehicle or manned or unmanned transportation vehicle such as a ground, water and/or air transportation vehicle. Thus, although the term "in-vehicle information display device" is used in the description of the present invention, it will be understood by those skilled in the art that the device is not limited to being associated with a vehicle, but may be any on-board device having an information display function, including, but not limited to, various types of navigation devices, Global Positioning System (GPS) receivers, Event Data Recorders (EDRs), Flight Data Recorders (FDRs), automotive infotainment devices, marine electronic devices (e.g., marine navigation devices, gyroscopes or compasses), and avionic devices.

According to the vehicle-mounted information display device, the vehicle-mounted information display method and the transportation tool, the display quality of the display system can be ensured while the integration volume is reduced by providing different optical element layouts, and the whole solution suitable for different vehicle types is matched.

It will be appreciated by persons skilled in the art that the embodiments of the invention described above and shown in the drawings are given by way of example only and are not limiting of the invention. The objects of the invention have been fully and effectively accomplished. The functional and structural principles of the present invention have been shown and described in the examples, and any variations or modifications of the embodiments of the present invention may be made without departing from the principles.

Claims

1. An in-vehicle information display device comprising:

a lighting unit;

a light splitting unit for splitting the light generated by the illumination unit into a first light and a second light, wherein the first light and the second light propagate along different light paths;

a first display unit for displaying first information based on the first light; and

a second display unit for displaying second information based on the second light;

the light splitting unit has different reflection/refraction ratios according to light energy requirements of the first display unit and the second display unit, so that the light intensity of the first light ray meets the light energy requirement of the first display unit, the light intensity of the second light ray meets the light energy requirement of the second display unit, and the first display unit and the second display unit display the first information and the second information by taking the first light ray and the second light ray as backlight.

2. The on-vehicle information display device according to claim 1, wherein the light splitting unit splits white light emitted from the illumination unit into the first light and the second light with reduced intensity, wherein the first light and the second light are white light.

3. The in-vehicle information display device according to claim 1 or 2, wherein the first display unit is an instrument panel display unit; and

the second display unit is a heads-up display unit.

4. The in-vehicle information display device according to claim 3,

the first light is formed by the light generated by the lighting unit after being transmitted by the light splitting unit; and

the second light is formed by reflecting the light generated by the lighting unit by the light splitting unit.

5. The in-vehicle information display device according to claim 3, characterized by further comprising:

and the light path adjusting unit is used for adjusting the light path of the first light ray and/or the second light ray so as to guide the first light ray and/or the second light ray to the corresponding first display unit and/or second display unit.

6. The in-vehicle information display device according to claim 3, characterized by further comprising:

and the light homogenizing unit is used for adjusting the light uniformity of the first light and/or the second light so as to guide the first light and/or the second light with improved light uniformity to the corresponding first display unit and/or second display unit.

7. The in-vehicle information display device according to claim 3, characterized by further comprising:

and the projection unit is used for projecting second light which passes through the second display unit and carries the display information of the second display unit onto a front windshield of the vehicle so that a user can see an image presented in front of the sight line of the user.

8. The in-vehicle information display device according to claim 3, characterized by further comprising:

and the projection imaging unit is used for projecting second light rays which pass through the second display unit and carry the display information of the second display unit to a reflection unit with a preset curvature arranged in the vehicle, so that a user can see an image presented in front of the sight line of the user through the reflection unit.

9. The in-vehicle information display device according to claim 3,

two or more optical elements among the respective optical elements of the in-vehicle information display device are arranged longitudinally in a longitudinal direction of the vehicle.

10. The in-vehicle information display device according to claim 3,

two or more optical elements among the respective optical elements of the in-vehicle information display device are arranged laterally in a width direction of the vehicle.

11. A vehicle-mounted information display method comprises the following steps:

generating light for on-vehicle information display by an illumination unit;

dividing light generated by the illumination unit into a first light and a second light by a light splitting unit, wherein the first light and the second light propagate along different light paths;

displaying, by a first display unit, first information based on the first light; and

displaying, by a second display unit, second information based on the second light;

12. The method as claimed in claim 11, wherein the light splitting unit splits the white light emitted from the illumination unit into the first light and the second light with reduced intensity, wherein the first light and the second light are white light.

13. The in-vehicle information display method according to claim 11 or 12, characterized in that the first display unit is an instrument panel display unit; and

the second display unit is a heads-up display unit.

14. The on-vehicle information display method according to claim 13,

15. The on-vehicle information display method according to claim 13, further comprising, after the light generated by the illumination unit is divided into the first light and the second light by the light dividing unit:

adjusting a light path of the first light ray and/or the second light ray to guide the first light ray and/or the second light ray to the corresponding first display unit and/or second display unit.

16. The on-vehicle information display method according to claim 13, further comprising, after the light generated by the illumination unit is divided into the first light and the second light by the light dividing unit:

and adjusting the light uniformity of the first light rays and/or the second light rays to guide the first light rays and/or the second light rays with improved light uniformity to the corresponding first display unit and/or second display unit.

17. The on-vehicle information display method according to claim 13, further comprising, after displaying second information based on the second light by a second display unit:

and projecting a second light ray passing through the second display unit and carrying display information of the second display unit onto a front windshield of the vehicle so that the user sees an image presented in front of his line of sight.

18. The on-vehicle information display method according to claim 13, further comprising, after displaying second information based on the second light by a second display unit:

and projecting a second light ray passing through the second display unit and carrying display information of the second display unit to a reflection unit having a predetermined curvature provided in the vehicle, so that the user sees an image presented in front of his line of sight through the reflection unit.

19. The on-vehicle information display method according to claim 13, characterized by further comprising:

two or more optical elements among the respective optical elements for on-vehicle information display are arranged longitudinally in the longitudinal direction of the vehicle.

20. The on-vehicle information display method according to claim 13, characterized by further comprising:

two or more optical elements among the respective optical elements for on-vehicle information display are arranged laterally in the width direction of the vehicle.

21. A transportation means comprising the in-vehicle information display device according to any one of claims 1 or 2.