Display device and vehicle

Abstract

The invention discloses a display device and a vehicle, the display device can be applied to the display field, for example, the display device can be applied to an HUD in the vehicle field, and the display device comprises an image generation device, a screen, a screen support and a baffle. The image generation device is used for generating imaging light carrying image information and sending the imaging light to the screen; the screen is used for receiving and displaying the imaging light generated by the image generation device; the screen support is used for supporting the screen, and in the embodiment of the invention, the edge of the screen support can protrude out of the edge of the screen; and the baffle plate is positioned around the image generation device and is used for resisting stray light reaching the screen bracket. The baffle is additionally arranged around the screen of the display equipment so as to resist stray light reaching the screen support and prevent the screen support from being burnt due to overheating, so that the service life of the display equipment is prolonged, and the use experience of a user is improved.

Description

Technical Field

[0001] The present application relates to the field of display, and in particular to a display device and a vehicle. Background Art

[0002] The display device is a device having a function of displaying images viewable by a user, for example, a head up display (HUD), a projector, a table display, and the like.

[0003] In products equipped with display devices, direct sunlight has a great impact on both the product and the user experience. Take HUD as an example. Direct sunlight on the HUD structure will cause the structure to overheat, thereby shortening the service life of the display device. If the structure is not made of high-temperature resistant materials, it may also burn the structure, causing safety problems. Summary of the invention

[0004] The embodiments of the present application provide a display device and a vehicle, which increase the service life of the display device by adding baffles around the screen of the display device to block stray light reaching the screen bracket (used to support the screen of the display device), thereby preventing the screen bracket from overheating and burning.

[0005] Based on this, the embodiments of the present application provide the following technical solutions:

[0006] In the first aspect, the embodiment of the present application first provides a display device that can be used in the display field, for example, it can be applied to the HUD in the automotive field scene, and the display device includes: an image generating device, a screen, a screen bracket and a baffle. Among them, the image generating device is used to generate imaging light carrying image information and send the imaging light to the screen; the screen is used to receive and display the imaging light generated by the image generating device; the screen bracket is used to support the screen, and in the embodiment of the present application, the edge of the screen bracket can protrude from the edge of the screen; the baffle is located around the image generating device, for example, it can be located around the image generating device to block stray light reaching the screen bracket, wherein the baffle can be any form or shape that can block light, and the present application does not limit this.

[0007] In the above-mentioned embodiment of the present application, a baffle is added around the screen of the display device to block stray light reaching the screen bracket structure, thereby preventing the screen bracket from overheating and burning, thereby increasing the service life of the display device and improving the user experience.

[0008] In a possible implementation manner of the first aspect, properties of the baffle may include: high temperature resistant material.

[0009] In the above-mentioned embodiment of the present application, the baffle is made of high temperature resistant material in order to achieve better heat conduction effect.

[0010] In a possible implementation of the first aspect, the angle between the plane where the baffle is located and the plane where the screen is located (the angle may be referred to as a one-sided angle) is within a preset angle range. For example, the plane angle is not less than a first angle value (such as 10°) and not greater than a second angle value (such as 170°). The first angle value and the second angle value may be customized. For example, the value ranges of the two angle values ​​may be adjusted according to the height of the baffle. This application does not limit this.

[0011] In the above-mentioned implementation mode of the present application, the inclination angle of the baffle relative to the screen can be customized and is flexible.

[0012] In a possible implementation of the first aspect, the display device may further include: a filter with an emission angle within a preset threshold range (such as an emission angle of ±10°). In the embodiment of the present application, the preset threshold range can be set relatively small, so the filter used in the present application may also be called a small-angle filter. The filter is located above the screen and is used to pass a light beam with an emission angle within a preset threshold range, which is transmitted from the image generating device to the filter.

[0013] In the above-mentioned embodiment of the present application, a small-angle filter is added above the screen so that glare with a large emission angle cannot pass through, which can greatly reduce the solar glare.

[0014] In a possible implementation manner of the first aspect, the angle between the filter and the screen is greater than zero, that is, the filter can be set at a certain angle to the screen, and the two are not parallel.

[0015] In the above-mentioned embodiment of the present application, the filter and the screen are arranged at a certain angle in order to prevent mirror reflection and improve the user experience.

[0016] In a possible implementation of the first aspect, the display device may further include: a polarizing film and a 1 / 4 film, the polarizing film and the 1 / 4 film are both located on the same side of the screen, wherein sunlight is incident on the polarizing film, the 1 / 4 film, and the screen in sequence. The polarizing film is used to transmit S polarized light and resist the transmission of P polarized light; the 1 / 4 film is used to transmit the S polarized light transmitted by the polarizing film, so that the S polarized light transmitted by the 1 / 4 film for the first time is reflected by the screen and then transmitted through the 1 / 4 film again to become P polarized light, that is, the S polarized light becomes P polarized light after passing through the 1 / 4 film twice. It should be noted here that sunlight is incident on the polarizing film, the 1 / 4 film, and the screen in sequence, which means that the light path of the sunlight passes through the polarizing film, the 1 / 4 film, and the screen in sequence. After the sunlight is incident on each of the above devices, the components of the light beam contained in the sunlight may change, and the specific application will not elaborate on this. It should also be noted that the situation in which the sunlight is incident on each device in sequence in the following embodiments is similar, and the following embodiments will not elaborate on this.

[0017] In the above-mentioned embodiment of the present application, a combination of a polarizing film and a 1 / 4 film can also be used to eliminate glare. The polarizing film transmits S polarized light, and the S polarized light becomes P polarized light after passing through the 1 / 4 film twice. The P polarized light cannot be emitted from the polarizing film, thereby reducing glare.

[0018] In a possible implementation of the first aspect, the display device may further include: a dust cover, a polarizing film on the dust cover, and a 1 / 4 film on the screen, wherein sunlight is incident on the dust cover, the polarizing film, the 1 / 4 film, and the screen in sequence. The polarizing film is used to transmit S polarized light and resist the transmission of P polarized light; the 1 / 4 film is used to transmit S polarized light transmitted by the polarizing film, so that the S polarized light transmitted by the 1 / 4 film for the first time is reflected by the screen and then transmitted again through the 1 / 4 film to become P polarized light.

[0019] In the above-mentioned implementation of the present application, a combination of a polarizing film and a 1 / 4 film is still used to eliminate glare, but the polarizing film is deployed under the dust cover (ie, attached to the lower surface of the dust cover), and the deployment of the polarizing film is flexible.

[0020] In a possible implementation of the first aspect, the display device may further include: a dust cover, a polarizing film on the dust cover, and a 1 / 4 film on the screen, wherein sunlight is incident on the polarizing film, the dust cover, the 1 / 4 film, and the screen in sequence. The polarizing film is used to transmit S polarized light and resist the transmission of P polarized light; the 1 / 4 film is used to transmit S polarized light transmitted by the polarizing film, so that the S polarized light transmitted by the 1 / 4 film for the first time is reflected by the screen and then transmitted again through the 1 / 4 film to become P polarized light.

[0021] In the above-mentioned implementation of the present application, a combination of a polarizing film and a 1 / 4 film is still used to eliminate glare, but the polarizing film is deployed on top of the dust cover (i.e., attached to the upper surface of the dust cover), and the deployment of the polarizing film is flexible.

[0022] In a possible implementation of the first aspect, the display device may further include: a dust cover, at least one curved mirror, a polarizing film located on one of the at least one curved mirror (which may be referred to as a target curved mirror), and a 1 / 4 film located on the screen, wherein sunlight sequentially enters the dust cover, the curved mirrors other than the target curved mirror in the at least one curved mirror, the target curved mirror (including the polarizing film), the 1 / 4 film, and the screen. It should be noted that since the polarizing film can be attached to any curved mirror, the order in which sunlight enters the curved mirror is determined by the positional relationship between the target curved mirror (including the polarizing film) and the other curved mirrors other than the target curved mirror in the at least one curved mirror. The above-mentioned order of entry is only a schematic, and this application does not limit this. The polarizing film is used to transmit S polarized light and resist the transmission of P polarized light; the 1 / 4 film is used to transmit S polarized light transmitted by the polarizing film, so that the S polarized light transmitted by the 1 / 4 film for the first time is reflected by the screen and then transmitted again through the 1 / 4 film to become P polarized light.

[0023] In the above-mentioned embodiments of the present application, the position deployment of the polarizing film is flexible and universal.

[0024] In a possible implementation of the first aspect, the at least one curved mirror may include: a first curved mirror and a second curved mirror; wherein the first curved mirror and the second curved mirror are used to sequentially reflect the imaging light, and the sequentially reflected imaging light can be further projected onto a reflective element (such as a windshield) to form a virtual image received by the human eye.

[0025] In the above-mentioned implementation mode of the present application, the display device may further include a curved mirror for reflecting imaging light, which is feasible.

[0026] The second aspect of the present application also provides a display device, which includes: an image generating device, a screen, a screen bracket and a filter. The image generating device is used to generate imaging light carrying image information and send the imaging light to the screen; the screen is used to receive and display the imaging light generated by the image generating device; the screen bracket is used to support the screen. In the embodiment of the present application, the edge of the screen bracket can protrude from the edge of the screen; the filter is located above the screen and is used to pass a light beam with an exit angle within a preset threshold range, which is transmitted from the image generating device to the filter, wherein the exit angle of the light beam through the filter is within a preset threshold range (such as an exit angle of ±10°). The preset threshold range can be set relatively small, so the filter used in the present application can also be called a small-angle filter.

[0027] In the above-mentioned embodiment of the present application, a small-angle filter is added above the screen to prevent glare with a large emission angle from passing through, which can greatly reduce solar glare and improve user experience.

[0028] In a possible implementation manner of the second aspect, the angle between the filter and the screen is greater than zero, that is, the filter can be set at a certain angle to the screen, and the two are not parallel.

[0029] In the above-mentioned embodiment of the present application, the filter and the screen are arranged at a certain angle in order to prevent mirror reflection and improve the user experience.

[0030] In a possible implementation of the second aspect, the display device may further include: a polarizing film and a 1 / 4 film, both of which are located on the same side of the screen, wherein sunlight is incident on the polarizing film, the 1 / 4 film, and the screen in sequence. The polarizing film is used to transmit S polarized light and resist the transmission of P polarized light; the 1 / 4 film is used to transmit S polarized light transmitted by the polarizing film, so that the S polarized light transmitted by the 1 / 4 film for the first time is reflected by the screen and then transmitted again through the 1 / 4 film to become P polarized light.

[0031] In the above-mentioned embodiment of the present application, a combination of a polarizing film and a 1 / 4 film can also be used to eliminate glare. The polarizing film transmits S polarized light, and the S polarized light becomes P polarized light after passing through the 1 / 4 film twice. The P polarized light cannot be emitted from the polarizing film, thereby reducing glare.

[0032] In a possible implementation of the second aspect, the display device may further include: a dust cover, a polarizing film on the dust cover, and a 1 / 4 film on the screen, wherein sunlight is incident on the dust cover, the polarizing film, the 1 / 4 film, and the screen in sequence. The polarizing film is used to transmit S polarized light and resist the transmission of P polarized light; the 1 / 4 film is used to transmit S polarized light transmitted by the polarizing film, so that the S polarized light transmitted by the 1 / 4 film for the first time is reflected by the screen and then transmitted again through the 1 / 4 film to become P polarized light.

[0033] In the above-mentioned implementation of the present application, a combination of a polarizing film and a 1 / 4 film is still used to eliminate glare, but the polarizing film is deployed under the dust cover (ie, attached to the lower surface of the dust cover), and the deployment of the polarizing film is flexible.

[0034] In a possible implementation of the second aspect, the display device may further include: a dust cover, a polarizing film on the dust cover, and a 1 / 4 film on the screen, wherein sunlight is incident on the polarizing film, the dust cover, the 1 / 4 film, and the screen in sequence. The polarizing film is used to transmit S polarized light and resist the transmission of P polarized light; the 1 / 4 film is used to transmit S polarized light transmitted by the polarizing film, so that the S polarized light transmitted by the 1 / 4 film for the first time is reflected by the screen and then transmitted again through the 1 / 4 film to become P polarized light.

[0035] In the above-mentioned implementation of the present application, a combination of a polarizing film and a 1 / 4 film is still used to eliminate glare, but the polarizing film is deployed on top of the dust cover (i.e., attached to the upper surface of the dust cover), and the deployment of the polarizing film is flexible.

[0036] In a possible implementation of the second aspect, the display device may further include: a dust cover, at least one curved mirror, a polarizing film located on one of the at least one curved mirror (which may be referred to as a target curved mirror), and a 1 / 4 film located on the screen, wherein sunlight sequentially enters the dust cover, the curved mirrors other than the target curved mirror in the at least one curved mirror, the target curved mirror (including the polarizing film), the 1 / 4 film, and the screen. It should be noted that since the polarizing film can be attached to any curved mirror, the order in which sunlight enters the curved mirror is determined by the positional relationship between the target curved mirror (including the polarizing film) and the other curved mirrors other than the target curved mirror in the at least one curved mirror. The above-mentioned order of entry is only a schematic, and this application does not limit this. The polarizing film is used to transmit S polarized light and resist the transmission of P polarized light; the 1 / 4 film is used to transmit S polarized light transmitted by the polarizing film, so that the S polarized light transmitted by the 1 / 4 film for the first time is reflected by the screen and then transmitted again through the 1 / 4 film to become P polarized light.

[0037] In the above-mentioned embodiments of the present application, the position deployment of the polarizing film is flexible and universal.

[0038] In a possible implementation of the second aspect, the display device may further include: a baffle, which is located around the image generating device, for example, can be located around the image generating device, and is used to block stray light reaching the screen bracket, wherein the baffle can be any form or shape that can block light, and this application does not limit this.

[0039] In the above-mentioned embodiment of the present application, a baffle is added around the screen of the display device to block stray light reaching the screen bracket structure, thereby preventing the screen bracket from overheating and burning, thereby increasing the service life of the display device and improving the user experience.

[0040] In a possible implementation manner of the second aspect, properties of the baffle may include: high temperature resistant material.

[0041] In the above-mentioned embodiment of the present application, the baffle is made of high temperature resistant material in order to achieve better heat conduction effect.

[0042] In a possible implementation of the second aspect, the angle between the plane where the baffle is located and the plane where the screen is located (the angle may be referred to as a one-sided angle) is within a preset angle range. For example, the plane angle is not less than a first angle value (such as 10°) and not greater than a second angle value (such as 170°). The first angle value and the second angle value may be customized. For example, the value ranges of the two angle values ​​may be adjusted according to the height of the baffle. This application does not limit this.

[0043] In the above-mentioned implementation mode of the present application, the inclination angle of the baffle relative to the screen can be customized and is flexible.

[0044] In a possible implementation of the second aspect, the at least one curved mirror may include: a first curved mirror and a second curved mirror; wherein the first curved mirror and the second curved mirror are used to sequentially reflect the imaging light, and the sequentially reflected imaging light can be further projected onto a reflective element (such as a windshield) to form a virtual image received by the human eye.

[0045] In the above-mentioned implementation mode of the present application, the display device may further include a curved mirror for reflecting imaging light, which is feasible.

[0046] The third aspect of the present application also provides a display device, which includes: an image generating device, a screen, a screen bracket, a polarizing film and a 1 / 4 film. The image generating device is used to generate imaging light carrying image information and send the imaging light to the screen. The imaging light can be called the first imaging light; the screen is used to receive and display the first imaging light generated by the image generating device; the screen bracket is used to support the screen. In the embodiment of the present application, the edge of the screen bracket can protrude from the edge of the screen; the sunlight is incident on the polarizing film, the 1 / 4 film and the screen in turn. The polarizing film is used to transmit S polarized light and resist the transmission of P polarized light; the 1 / 4 film is used to transmit the S polarized light transmitted by the polarizing film, so that the S polarized light transmitted by the 1 / 4 film for the first time is reflected by the screen and then transmitted through the 1 / 4 film again to become P polarized light.

[0047] In the above-mentioned embodiment of the present application, a combination of a polarizing film and a 1 / 4 film can also be used to eliminate glare. The polarizing film transmits S polarized light, and the S polarized light becomes P polarized light after passing through the 1 / 4 film twice. The P polarized light cannot be emitted from the polarizing film, thereby reducing glare.

[0048] In a possible implementation manner of the third aspect, the polarizing film and the 1 / 4 film may both be located on the screen.

[0049] In the above-mentioned embodiment of the present application, a method for realizing the deployment position of the polarizing film and the 1 / 4 film is described, which has flexibility.

[0050] In a possible implementation of the third aspect, the display device may further include: a dust cover, and the polarizing film may be located on the dust cover (such as deployed on the upper surface or lower surface of the dust cover). In this case, if the polarizing film is deployed on the lower surface of the dust cover, the sunlight enters the dust cover, the polarizing film, the 1 / 4 film and the screen in sequence; if the polarizing film is deployed on the upper surface of the dust cover, the sunlight enters the polarizing film, the dust cover, the 1 / 4 film and the screen in sequence; the polarizing film may also be located on one of the at least one curved mirrors (which may be referred to as the target curved mirror). In this case, the sunlight enters the dust cover, the curved mirror other than the target curved mirror in the at least one curved mirror, the target curved mirror (including the polarizing film), the 1 / 4 film and the screen in sequence. It should be noted that since the polarizing film can be attached to any curved mirror, the order in which the sunlight enters the curved mirror is determined by the positional relationship between the target curved mirror (including the polarizing film) and the other curved mirrors in the at least one curved mirror other than the target curved mirror. The above-mentioned order of incidence is only a schematic, and the present application does not limit this.

[0051] In the above-mentioned embodiments of the present application, the deployment position of the polarizing film is flexible and universal.

[0052] In a possible implementation of the third aspect, the display device may further include: a filter with an emission angle within a preset threshold range (such as an emission angle of ±10°). In an embodiment of the present application, the preset threshold range can be set relatively small, so the filter used in the present application may also be called a small-angle filter. The filter is located above the screen and is used to pass a light beam with an emission angle within a preset threshold range, which is transmitted from the image generating device to the filter.

[0053] In the above-mentioned embodiment of the present application, a small-angle filter is added above the screen so that glare with a large emission angle cannot pass through, which can greatly reduce the solar glare.

[0054] In a possible implementation manner of the third aspect, the angle between the filter and the screen is greater than zero, that is, the filter can be set at a certain angle to the screen, and the two are not parallel.

[0055] In the above-mentioned embodiment of the present application, the filter and the screen are arranged at a certain angle in order to prevent mirror reflection and improve the user experience.

[0056] In a possible implementation of the third aspect, the display device may further include: a baffle, which is located around the image generating device, for example, can be located around the image generating device, and is used to block stray light reaching the screen bracket, wherein the baffle can be any form or shape that can block light, and this application does not limit this.

[0057] In the above-mentioned embodiment of the present application, a baffle is added around the screen of the display device to block stray light reaching the screen bracket structure, thereby preventing the screen bracket from overheating and burning, thereby increasing the service life of the display device and improving the user experience.

[0058] In a possible implementation manner of the third aspect, properties of the baffle may include: high temperature resistant material.

[0059] In the above-mentioned embodiment of the present application, the baffle is made of high temperature resistant material in order to achieve better heat conduction effect.

[0060] In a possible implementation of the third aspect, the angle between the plane where the baffle is located and the plane where the screen is located (the angle may be referred to as a one-sided angle) is within a preset angle range. For example, the plane angle is not less than a first angle value (such as 10°) and not greater than a second angle value (such as 170°). The first angle value and the second angle value may be customized. For example, the value ranges of the two angle values ​​may be adjusted according to the height of the baffle. This application does not limit this.

[0061] In the above-mentioned implementation mode of the present application, the inclination angle of the baffle relative to the screen can be customized and is flexible.

[0062] In a possible implementation of the third aspect, the at least one curved mirror may include: a first curved mirror and a second curved mirror; wherein the first curved mirror and the second curved mirror are used to sequentially reflect the imaging light, and the sequentially reflected imaging light can be further projected onto a reflective element (such as a windshield) to form a virtual image received by the human eye.

[0063] In the above-mentioned implementation mode of the present application, the display device may further include a curved mirror for reflecting imaging light, which is feasible.

[0064] In a fourth aspect, the present application provides a vehicle. The vehicle comprises a display device as described in the first aspect or any one of the optional modes of the first aspect, the second aspect or any one of the optional modes of the second aspect, and the third aspect or any one of the optional modes of the third aspect. The display device is installed on the vehicle.

[0065] In a possible implementation of the fourth aspect, the vehicle may further include: a reflective element (such as a windshield), the display device is used to project the above-mentioned imaging light to the reflective element, and the reflective element is used to reflect the imaging light to form a virtual image so that the virtual image can be received by the human eye. BRIEF DESCRIPTION OF THE DRAWINGS

[0066] Figure 1 A schematic diagram of the structure of a display device provided in an embodiment of the present application;

[0067] Figure 2 A schematic diagram of the relationship between the baffle plate and the protruding size of the edge of the screen bracket provided in the embodiment of the present application;

[0068] Figure 3 A schematic diagram of a plane angle between a baffle and a screen provided in an embodiment of the present application;

[0069] Figure 4 A comparison diagram of energy simulation results of sunlight backflow from a screen bracket provided in an embodiment of the present application;

[0070] Figure 5 Another schematic diagram of the structure of the display device provided in the embodiment of the present application;

[0071] Figure 6 Another schematic diagram of the structure of the display device provided in the embodiment of the present application;

[0072] Figure 7 Another schematic diagram of the structure of the display device provided in the embodiment of the present application;

[0073] Figure 8 Another schematic diagram of the structure of the display device provided in the embodiment of the present application;

[0074] Fig. 9 A schematic diagram of a display device installed in a vehicle is provided for an embodiment of the present application;

[0075] Fig.10 A schematic diagram of a possible functional framework of a vehicle provided in an embodiment of the present application. DETAILED DESCRIPTION

[0076] The embodiments of the present application provide a display device and a vehicle, which increases the service life of the display device by adding a baffle around the screen of the display device to block stray light reaching the screen bracket structure, thereby preventing the screen bracket from overheating and burning, thereby saving user costs and improving user experience.

[0077] The terms "first", "second", etc. in the specification and claims and drawings of the present application are used to distinguish similar objects, and need not be used to describe a specific order or sequential order. It should be understood that the terms used in this way can be interchangeable under appropriate circumstances, which is merely a way of distinguishing the objects of the same attributes when describing them in the embodiments of the present application. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions, so that the process, method, system, product or equipment comprising a series of units need not be limited to those units, but may include other units that are not clearly listed or inherent to these processes, methods, products or equipment.

[0078] The application scenarios of the display device in this application can be HUD, vehicle-mounted display screen, projector, desktop display, augmented reality (AR), virtual reality (VR) and other devices. In products equipped with display devices, direct sunlight has a great impact on both the product and the experience. Taking HUD as an example, direct sunlight on the structural parts of the HUD (such as the screen bracket) will cause the structural parts to overheat, thereby shortening the service life of the display device. If the structural parts are not made of high temperature resistant materials, the structural parts may also be burned.

[0079] To this end, the present application provides a display device. For the convenience of explanation, the following embodiments of the present application take HUD as an example to illustrate the structure of the display device. Figure 1 A schematic diagram of the structure of a display device provided in an embodiment of the present application. Figure 1 As shown, the display device includes: an image generating device 101, a screen 102, a screen support 103 and a baffle 104, wherein the image generating device 101 is used to generate imaging light carrying image information and send the imaging light to the screen, and the imaging light can be referred to as the first imaging light; the screen 102 can also be referred to as an imaging screen (such as a diffusion screen), which is used to receive and display the first imaging light generated by the image generating device 101; the screen support 103 is used to support the screen 102. In the embodiment of the present application, the edge of the screen support 103 can protrude from the edge of the screen 102 (such as Figure 1 As shown); baffle 104 is located around the image generating device 101, for example, it can be located around the image generating device to block stray light reaching the screen bracket 103, wherein the baffle 104 can be any form or shape that can block light, and this application does not limit this. It should be noted that, Figure 1 The baffle 104 is shown in the front view, and only the baffles on the left and right sides are shown. Figure 1 It is also important to note that Figure 1The relative distances between the image generating device 101, the screen 102, the screen support 103 and the baffle 104, and the sizes thereof are for illustration only, and are only for the purpose of showing the relative positional relationship between the image generating device 101, the screen 102, the screen support 103 and the baffle 104, and do not constitute a limitation on actual applications. For example, Figure 1 The relative position between the image generating device 101 and the screen 102 is only for illustration. In actual application, the image generating device 101 and the screen 102 are separated by a certain distance (depending on the specific application scenario), which is not limited in this application. The subsequent other figures are similar and will not be described in detail below.

[0080] It should be noted that, in some embodiments of the present application, the baffle 104 may also be located only in at least one orientation around the image generating device 101, such as only setting the baffle 104 on two opposite sides around the image generating device 101, so that the function of partially blocking the stray light reaching the screen bracket 103 can also be achieved. For the convenience of explanation, the following embodiments of the present application are all described by taking the baffle 104 being located around the image generating device 101 as an example. It should be noted here that the baffle 104 located around the image generating device 101 may be one or more baffles, or may be a whole baffle formed in one piece. For example, when the baffle 104 is set around the image generating device 101, it may be four baffles 104 surrounding the image generating device 101, or it may be a whole baffle 104 bent around the screen 102. The specific application does not limit this. For the convenience of explanation, in the following embodiments of the present application, four baffles 104 surrounding the image generating device 101 are described as an example.

[0081] Optionally, an optical element such as an optical path folding mirror and a reflective mirror may be disposed behind the screen 102 to project the first imaging light on the screen 102 onto the reflective element, so that the virtual image formed on the reflective element is received by the human eye. As an example, the above optical element in the HUD may be two curved mirrors, such as Figure 1As shown, the two curved mirrors are respectively called the first curved mirror 105 and the second curved mirror 106, wherein the first curved mirror 105 is used to reflect the first imaging light to obtain the imaging light after the first reflection; the second curved mirror 106 is used to reflect the imaging light after the first reflection to obtain the imaging light after the second reflection, which can be called the second imaging light, and the second imaging light can be further projected onto the windshield (such as projected onto the windshield after passing through the dust cover) to form a virtual image received by the human eye. It should be noted that the source of the stray light blocked by the baffle 104 may be more than one. As an example, the stray light may be the stray light that is reflected from the first curved mirror 105 to the second curved mirror 106 after the sunlight irradiates the first curved mirror 105.

[0082] It should be noted that, in some embodiments of the present application, the height of the baffle 104 can be set according to the size of the screen bracket 103, and the purpose of blocking the stray light reaching the screen bracket 103 can be achieved by adjusting the height of the baffle 104. Figure 2 The more the edge of the screen bracket 103 protrudes from the edge of the screen 102, the higher the height of the baffle 104 can be set. Figure 2 h1 shown in the sub-schematic diagram (a) of FIG. 1 ; otherwise, the height of the baffle 104 can be set lower, such as Figure 2 h2, h1>h2 as shown in the sub-schematic diagram (b) in FIG. 1 . Accordingly, most of the stray light reaching the screen bracket 103 can be blocked, the optical power on the screen bracket can be greatly reduced, the screen bracket 103 can be prevented from overheating and burning, and the safety of product use can be improved. In addition, when the baffle 104 is set higher, it can also block the stray light from the first curved mirror 105 to the second curved mirror 106, further reducing the optical power of the second curved mirror 106 and increasing the service life of the second curved mirror 106. It should be noted here that in the case where the four baffles 104 surround the image generating device 101, the heights of the four baffles can be consistent or different. The present application does not limit the value of the height of each baffle, which can be set according to the application scenario. Similarly, if a whole baffle formed in one piece surrounds the image generating device 101, the height of the baffle at each position can also be consistent or different, which will not be elaborated here.

[0083] It should also be noted that in other embodiments of the present application, in order to better conduct heat, the baffle 104 can be a high-temperature resistant material. For example, the baffle can be a single metal (such as iron, copper, aluminum, etc.), a metal alloy (such as steel, brass, aluminum alloy, etc.), or other non-metallic high-temperature resistant materials (such as high-temperature resistant polymers, high-temperature resistant fiber materials, etc.). The present application does not specifically limit this.

[0084] In addition, in some embodiments of the present application, the angle between the plane where the baffle 104 is located and the plane where the screen 102 is located (the angle may be referred to as the plane angle) may also be set according to actual needs. Specifically, the plane angle between the baffle 104 and the screen 102 may be within a preset angle range, for example, it may be not less than a first angle value (such as 20°) and not greater than a second angle value (such as 160°). The first angle value and the second angle value may be customized. For example, the value ranges of the two angle values ​​may be adjusted according to the height of the baffle 104. The present application does not limit this. As an example, please refer to Figure 3 , Figure 3 The sub-schematic diagram (a) in FIG. 1 shows that the plane angle between the four baffles 104 around the screen 102 and the screen 102 is 90°. Figure 3 The sub-schematic diagram (b) in FIG. 1 shows that the plane angle between the four baffles 104 around the screen 102 and the screen 102 is 120°.

[0085] It should be noted here that Figure 3 It is shown that the values ​​of the plane angles between the four baffles 104 around the screen 102 and the screen 102 are the same. In some application scenarios, the plane angles between the four baffles 104 and the screen 102 may be different. For example, the plane angle between the two baffles 104 opposite to each other and the screen 102 may be 60°, and the plane angle between the other two baffles 104 opposite to each other and the screen 102 may be 120°. This application does not limit the specific value of the plane angle between each baffle 104 and the screen 102.

[0086] It should also be noted that in some implementations of the present application, the height of the baffle 104 can be set according to the size of the screen bracket 103 as well as the value of the plane angle between the baffle 104 and the screen 102. As an example, when the plane angle is 90°, the height of the baffle 104 can be set lower, when the plane angle is between 20° and 90°, the height of the baffle 104 is inversely correlated with the value of the plane angle (i.e., the larger the plane angle, the lower the height), and when the plane angle is between 90° and 160°, the height of the baffle 104 is positively correlated with the value of the plane angle (i.e., the larger the plane angle, the higher the height).

[0087] In order to have a more intuitive understanding of the beneficial effects brought by the embodiments of the present application, the following further compares the technical effects brought by the embodiments of the present application. Figure 4 , Figure 4 This is a comparison diagram of the energy simulation results of the backflow of sunlight from the screen bracket 103, where: Figure 4The units of the horizontal and vertical axes of the schematic diagrams (a) and (b) are both millimeters. Figure 4 The schematic diagram (a) shows the case without a baffle. Without a baffle, the incident power of the screen bracket is 2.6W, and the maximum power density is 10609W / m 2 ; Figure 4 The schematic diagram (b) shows the case where a baffle is added. When the baffle is added, the incident power of the screen bracket is 0.04W and the maximum power density is 3607W / m 2 It can be seen that for the display device with a baffle, both the incident power and the maximum power density on the screen bracket are greatly reduced.

[0088] In related products equipped with display devices, direct sunlight hitting the structural parts of the display device will not only cause the structural parts to overheat, but also the internal mirror of the display device (such as the curved mirror of the HUD) or the light reflected back by the structural parts will form a white spot (i.e. glare) in the field of vision when seen by the human eye, thereby affecting the user experience (such as driving). In order to reduce the impact of glare, in some embodiments of the present application, glare can also be eliminated by adding a small-angle filter, a polarizing film, and a 1 / 4 film above the screen. These two methods will reduce most of the glare incident on the screen and reflected, which are introduced below:

[0089] 1. Add a filter with an emission angle within the preset threshold range above the screen

[0090] For details, please refer to Figure 5 ,exist Figure 5 In the embodiment of the present application, the display device is still taken as a HUD as an example for illustration. In the embodiment of the present application, a filter 107 with an emission angle within a preset threshold range (such as an emission angle of ±5°) can be added above the screen 102 of the display device to pass a light beam with an emission angle within the preset threshold range, which is propagated from the image generating device 101 to the filter 107. In the embodiment of the present application, the preset threshold range can be set relatively small. Therefore, the filter used in the present application can also be called a small-angle filter, that is, the filter only allows a light beam within a small angle range to be emitted from the filter, such as a light beam of ±5°, and a light beam with a larger angle cannot pass. In the present application, the imaging light generated by the image generating device 101 belongs to a small-angle light beam, which can pass through the filter 107. The large-angle glare formed by reflection after the sun directly hits the screen 102 cannot pass through the filter 107, which can greatly reduce the sun glare. It should be noted that the present application does not limit the type of filter used.

[0091] It should be noted that Figure 5Since the HUD is used as an example for illustration, it has a first curved mirror 105 and a second curved mirror 106. In order to prevent mirror reflection, the filter 107 can be set at a certain angle to the screen 102, that is, the angle between the filter 107 and the screen 102 is greater than zero (that is, the two are not parallel).

[0092] It should be noted that, in the embodiment of the present application, the filter 107 and the screen 102 are arranged at a certain angle, which can be as follows: Figure 5 The tilting method in can also be as follows Figure 6 The tilting method shown and the tilting angle (i.e., the angle) can be set according to the specific application scenario, and this application does not limit this.

[0093] It is also important to note that Figure 5 Taking HUD as an example, in some other embodiments of the present application, the display device may not need modules such as the first curved mirror 105, the second curved mirror 106 and the dust cover, or other modules may be added or reduced according to application requirements. The present application does not limit this, but the image generating device 101, the screen 102, the screen bracket 103 and the filter 107 are necessary modules.

[0094] It is also important to note that in Figure 5 In the embodiment of the present invention, the filter 107 is deployed above the baffle 104 (i.e., the baffle 104 is used as a supporting structure of the filter 107), that is, the combination of "baffle 104 + filter 107" is used to prevent the screen bracket 103 from overheating and prevent solar glare; in other embodiments of the present application, the filter 107 can be deployed separately, that is, not deployed above the baffle 104, but supported by additional supporting structures (such as 4 brackets), that is, only the "filter 107" is used to achieve the function of preventing solar glare. In practical applications, the solution can be selected according to functional requirements, and the present application does not limit this.

[0095] 2. Add polarizing film and 1 / 4 film above the screen

[0096] In the embodiment of the present application, a combination of a polarizing film and a 1 / 4 film can also be used to eliminate glare. Specifically, the polarizing film and the 1 / 4 film are both located above the screen, wherein the polarizing film is used to transmit S polarized light and resist the transmission of P polarized light, that is, the polarizing film transmits S polarized light and does not transmit P polarized light (that is, P polarized light cannot be emitted from the polarizing film); the 1 / 4 film is used to convert the S polarized light into P polarized light when the S polarized light passes through for the second time, that is, the S polarized light becomes P polarized light after passing through the 1 / 4 film twice. In the embodiment of the present application, the specific arrangement of the polarizing film and the 1 / 4 film may include but is not limited to the following methods:

[0097] (1) The polarizing film and 1 / 4 film are above the screen.

[0098] For details, please refer to Figure 7 (Take HUD as an example), by directly adding the polarizing film 108 and the 1 / 4 film 109 above the screen 102, and the polarizing film 108 is above the 1 / 4 film 109. It should be noted that in this case, the polarizing film 108 and the 1 / 4 film 109 are attached together. Figure 7 In order to illustrate its working principle, the polarizing film 108 and the 1 / 4 film 109 are separated in the middle. The polarizing film 108 and the 1 / 4 film 109 can be completely tightly fitted together without leaving a gap in the middle; the polarizing film 108 and the 1 / 4 film 109 can also leave a gap in the middle (such as separated by glass), which is not specifically limited in this application. Sunlight (including Figure 8 After the P polarized light shown by the dotted line and the S polarized light shown by the solid line passes through the polarizing film 108, the S polarized light is transmitted, and the S polarized light becomes P polarized light after passing through the 1 / 4 film 109 twice. Since the P polarized light cannot be emitted from the polarizing film 108, the risk of glare is reduced.

[0099] It should also be noted that in the embodiment of the present application, the 1 / 4 film 109 can be attached to the screen 102 (in Figure 7 In order to explain the principle, the two are drawn in parallel), and they can also be deployed independently, but it is necessary to ensure that the S polarized light transmitted from the polarizing film 108 is not vertically incident on the 1 / 4 film 109. This is to avoid the problem of incomplete polarization state conversion and stray light when the angles of the light passing through the polarizer and the 1 / 4 film are inconsistent.

[0100] It should also be noted that the polarizing film 108 mentioned above transmits S-polarized light and blocks P-polarized light. In other embodiments of the present application, a polarizing film that transmits P-polarized light and blocks S-polarized light can also be used. In this case, the dotted line in Figure 7 shows S-polarized light, and the solid line shows P-polarized light. The rest of the process is similar and will not be repeated here.

[0101] Similarly, Figure 7 Also taking HUD as an example, in some other embodiments of the present application, the display device may not need modules such as the first curved mirror 105, the second curved mirror 106 and the dust cover, or other modules may be added or reduced according to application requirements. The present application does not limit this, but the image generating device 101, the screen 102, the screen bracket 103, the polarizing film 108, and the 1 / 4 film 109 are necessary modules.

[0102] (2) The polarizing film is placed on the dust cover with 1 / 4 of the film above the screen.

[0103] For details, please refer to Figure 8 (Take HUD as an example), in the embodiment of the present application, the polarizing film 108 is disposed on the dust cover (such as Figure 8 The dust cover with the polarizing film 108 can be called a polarizing dust cover (in the HUD, the dust cover is located above the curved mirror, therefore, the dust cover with the polarizing film 108 is also located above the screen 102), and the 1 / 4 film 109 is above the screen 102 (such as being attached to the screen 102 or independently deployed). When sunlight enters the polarizing dust cover, only S polarized light can pass through. The S polarized light passes through the 1 / 4 film twice and becomes P polarized light, and can no longer pass through the polarizing dust cover, thereby reducing glare.

[0104] Similarly, the polarizing film 108 described above transmits S polarized light and blocks P polarized light; in other embodiments of the present application, a polarizing film that transmits P polarized light and blocks S polarized light may also be used. In this case, Figure 8 The dashed line in the middle shows S polarized light, and the solid line shows P polarized light. The rest of the process is similar and will not be elaborated here.

[0105] It should be noted that the above two methods of the present application are two typical settings of the polarizing film and the 1 / 4 film. In some other embodiments of the present application, as an example, the 1 / 4 film 109 can also be bonded together with the polarizing film 108 to form a combined film, and then the combined film is set on the dust cover. The present application does not limit the specific setting positions of the polarizing film 108 and the 1 / 4 film 109.

[0106] Similarly, in Figure 7 or Figure 8 In addition to the polarizing film 108 and the 1 / 4 film 109, there is also a baffle 104, which can be used as a supporting structure for the 1 / 4 film 109 (or a combined film of the polarizing film 108 and the 1 / 4 film 109), that is, the combination of the "baffle 104 + polarizing film 108 and the 1 / 4 film 109" can achieve the function of preventing the screen bracket 103 from overheating and preventing solar glare; and in other embodiments of the present application, the polarizing film 108 and the 1 / 4 film 109 can be deployed separately, that is, the baffle 104 is not required, and the anti-sun glare function is achieved only by the "polarizing film 108 and the 1 / 4 film 109". In practical applications, the solution can be selected according to the functional requirements, and the present application does not limit this.

[0107] It should also be noted that in other embodiments of the present application, in order to enhance the anti-glare function, the combination of "baffle 104 + filter 107 + polarizing film 108 and 1 / 4 film 109" can be used to prevent the screen bracket 103 from overheating and better prevent solar glare; or, the combination of "filter 107 + polarizing film 108 and 1 / 4 film 109" can be used to achieve better anti-solar glare. Among them, the setting method of baffle 104, filter 107, polarizing film 108 and 1 / 4 film 109 is similar to the above-mentioned process of separate deployment. In actual application, they only need to be used in combination. Please refer to the above description for details, which will not be repeated here.

[0108] Since the display device provided in the embodiments of the present application can be used for image display in fields such as smart terminals and smart driving, multiple application scenarios of the products are introduced below.

[0109] (1) The display device is HUD

[0110] In a possible application scenario, the display device provided in the embodiment of the present application may be a HUD, which can project navigation information, instrument information, etc. into the driver's front field of view to prevent the driver from looking down at this information, thereby affecting driving safety. The image projected by the HUD is reflected by the windshield to form a virtual image outside the vehicle. Among them, the types of HUD include but are not limited to windshield (W)-HUD, augmented reality head-up display (AR-HUD), etc. When the driver is driving a vehicle, the sunlight directly hits the curved mirror inside the HUD or the light reflected back by the structural parts will form white spots in the field of view, thereby affecting driving. Therefore, the HUD provided in the embodiment of the present application can reduce the impact of glare. For example, the polarizing film and 1 / 4 film, baffle and / or small angle filter of the embodiment of the present application can be set in a double concave architecture HUD proposed by Nippon Seiki to increase the service life of the HUD and / or reduce the impact of glare.

[0111] (2) The display device is a projector

[0112] In a possible application scenario, the display device provided in the embodiment of the present application may be a projector, which can project images onto a wall or a projection screen. In some special usage scenarios, such as outdoor camping, team building, etc., when the user is watching, the light reflected back by the internal structural parts of the projector directly from the sunlight will form white spots in the field of vision, thereby affecting the viewing experience. Therefore, the projector provided in the embodiment of the present application can also reduce the impact of glare.

[0113] (3) The display device is a near-eye display (NED) device

[0114] In a possible application scenario, the display device provided in the embodiment of the present application may be a NED device, and the NED device may be an AR device or a VR device. AR devices may include but are not limited to AR glasses and AR helmets, and VR devices may include but are not limited to VR glasses and VR helmets. Taking AR glasses as an example, users can wear AR glasses to play games, watch videos, participate in virtual meetings, etc. In some usage scenarios, such as playing games outdoors, when the user uses the AR glasses, the light reflected by the internal structural parts of the AR glasses caused by direct sunlight will be seen by the human eye as white spots in the field of vision, thereby affecting the viewing experience. Therefore, the NED device provided in the embodiment of the present application can also reduce the impact of glare and improve the user experience.

[0115] It should be noted that the display device described in the present application can be applied not only to the application scenarios described above, but also to various sub-fields of the display field, which will not be illustrated here.

[0116] The embodiment of the present application also provides a vehicle, which is equipped with any of the above-mentioned display devices. Figure 9 is a schematic diagram of a display device 901 installed on a vehicle provided in an embodiment of the present application. The windshield of the vehicle can be used as a curved mirror or a lens. When the windshield is used as a curved mirror, the display device 901 and the driver or passenger are located on the same side of the windshield. When the windshield is used as a lens, the display device 901 and the driver or passenger are located on different sides of the windshield. The display device 901 is used to output imaging light. The windshield is used to reflect or transmit imaging light to form a virtual image. The virtual image is located on one side of the windshield, and the driver or passenger is located on the other side of the windshield. The reflected or transmitted imaging light is irradiated to both eyes of the driver or passenger respectively.

[0117] Exemplarily, the vehicle may be a car, a truck, a motorcycle, a bus, a ship, an airplane, a helicopter, a lawn mower, an amusement vehicle, a playground vehicle, construction equipment, a tram, a golf cart, a train, and a cart, etc., which are not particularly limited in the embodiments of the present application. The display device 901 may be installed on the instrument panel (IP) of the vehicle, located at the co-pilot position or the main driver position, or may be installed on the back of the seat. The above-mentioned display device 901 may be referred to as a HUD when applied to a vehicle, and may be used to display navigation information, vehicle speed, battery / fuel level, etc.

[0118] Fig.10 Schematic diagram of a possible functional framework of a vehicle provided in an embodiment of the present application. Fig.10As shown, the functional framework of the vehicle may include various subsystems, such as the control system 14, the sensor system 12, one or more peripheral devices 16 (one is shown as an example), the power supply 18, the computer system 20, and the display system 32. Optionally, the vehicle may also include other functional systems, such as an engine system that provides power for the vehicle, etc., which is not limited in this application.

[0119] The sensor system 12 may include a number of detection devices, which can sense the measured information and convert the sensed information into electrical signals or other required forms of information output according to a certain rule. As shown in the figure, these detection devices may include a global positioning system (GPS), a vehicle speed sensor, an inertial measurement unit (IMU), a radar unit, a laser rangefinder, a camera device, a wheel speed sensor, a steering sensor, a gear position sensor, or other components for automatic detection, etc., and the present application does not limit them.

[0120] The control system 14 may include several components, such as the steering unit, brake unit, lighting system, automatic driving system, map navigation system, network timing system and obstacle avoidance system shown in the figure. Optionally, the control system 14 may also include components such as a throttle controller and an engine controller for controlling the vehicle's speed, which are not limited in this application.

[0121] The peripheral device 16 may include several components, such as the communication system, touch screen, user interface, microphone, and speaker shown in the figure. The communication system is used to realize network communication between the vehicle and other devices other than the vehicle. In practical applications, the communication system may use wireless communication technology or wired communication technology to realize network communication between the vehicle and other devices. The wired communication technology may refer to communication between the vehicle and other devices through network cables or optical fibers.

[0122] The power source 18 represents a system that provides power or energy for the vehicle, which may include but is not limited to rechargeable lithium batteries or lead-acid batteries, etc. In practical applications, one or more battery components in the power source are used to provide power or energy for starting the vehicle, and the type and material of the power source are not limited in this application.

[0123] Several functions of the vehicle are controlled and implemented by the computer system 20. The computer system 20 may include one or more processors 2001 (one processor is shown as an example) and a memory 2002 (also referred to as a storage device). In actual applications, the memory 2002 is also inside the computer system 20, or it may be outside the computer system 20, for example, as a cache in the vehicle, etc., which is not limited in this application.

[0124] For the description of the processor 2001, reference may be made to the description of the processor 1001. The processor 2001 may include one or more general-purpose processors, such as a graphics processing unit (GPU). The processor 2001 may be used to run the relevant programs or instructions corresponding to the programs stored in the memory 2002 to implement the corresponding functions of the vehicle.

[0125] The memory 2002 may include a volatile memory, such as a RAM; the memory may also include a non-volatile memory, such as a ROM, a flash memory or a solid state drive (SSD); the memory 2002 may also include a combination of the above-mentioned types of memory. The memory 2002 may be used to store a set of program codes or instructions corresponding to the program codes, so that the processor 2001 calls the program codes or instructions stored in the memory 2002 to implement the corresponding functions of the vehicle. This function includes but is not limited to Fig.10 Some or all of the functions in the vehicle functional framework diagram shown. In this application, the memory 2002 may store a set of program codes for vehicle control, and the processor 2001 calls the program code to control the safe driving of the vehicle. How to achieve safe driving of the vehicle is described in detail below in this application.

[0126] Optionally, in addition to storing program codes or instructions, the memory 2002 may also store information such as road maps, driving routes, sensor data, etc. The computer system 20 may be combined with other elements in the vehicle functional framework diagram, such as sensors in the sensor system, GPS, etc., to implement relevant functions of the vehicle. For example, the computer system 20 may control the driving direction or driving speed of the vehicle based on the data input from the sensor system 12, which is not limited in this application.

[0127] The display system 32 may include several components, such as a controller and the display device 901 described above. The controller is used to generate images according to user instructions (such as generating images containing vehicle status such as vehicle speed, power / fuel level, and images of augmented reality AR content), and send the image content to the display device 901. The image generating device in the display device 901 is used to output imaging light carrying image information. The windshield is used to reflect or transmit imaging light so that a virtual image corresponding to the image content is presented in front of the driver or passenger. It should be noted that the functions of some components in the display system 32 can also be implemented by other subsystems of the vehicle. For example, the controller can also be a component in the control system 14.

[0128] Among them, this application Fig.10 The four subsystems shown are sensor system 12, control system 14, computer system 20 and display system 32, which are only examples and do not constitute limitations. In practical applications, vehicles can combine several components in the vehicle according to different functions to obtain subsystems with corresponding different functions. In practical applications, vehicles can include more or fewer systems or components, which is not limited in this application.

[0129] In the description of this specification, specific features, structures, materials or characteristics may be combined in an appropriate manner in any one or more embodiments or examples.

[0130] The above are only specific implementations of the present application, but the protection scope of the present application is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

1. A display device, characterized in that: include: An image generating device, a screen, a screen support, and a baffle; The image generating device is used to generate imaging light carrying image information and send the imaging light to the screen; The screen is used to display the imaging light; The screen bracket is used to support the screen; The baffle is located around the screen and is used to block stray light from reaching the screen bracket.

2. The device according to claim 1, characterized in that The properties of the baffle include: High temperature resistant material.

3. The device according to any one of claims 1-2, characterized in that The angle between the plane where the baffle is located and the plane where the screen is located is within a preset angle range.

4. The device according to any one of claims 1 to 3, characterized in that The device also includes: Optical filters; The filter is located above the screen and is used to pass a light beam whose exit angle is within the preset threshold range, and the light beam is propagated from the image generating device to the filter.

5. The device according to claim 4, characterized in that The angle between the filter and the screen is greater than zero.

6. The device according to any one of claims 1 to 5, characterized in that The device also includes: A polarizing film and a 1 / 4 film located on the same side of the screen, wherein sunlight is incident on the polarizing film, the 1 / 4 film and the screen in sequence; The polarizing film is used to transmit S-polarized light and resist the transmission of P-polarized light; The 1 / 4 film is used to transmit the S polarized light, so that the transmitted S polarized light becomes P polarized light when it passes through the 1 / 4 film again after being reflected by the screen.

7. The device according to any one of claims 1 to 5, characterized in that The device also includes: A dust cover, a polarizing film on the dust cover, and a 1 / 4 film on the screen, wherein sunlight is incident on the dust cover, the polarizing film, the 1 / 4 film, and the screen in sequence; The polarizing film is used to transmit S-polarized light and resist the transmission of P-polarized light; The 1 / 4 film is used to transmit the S polarized light, so that the transmitted S polarized light is transformed into P polarized light after being reflected by the screen and passing through the 1 / 4 film again.

8. The device according to any one of claims 1 to 5, characterized in that The device also includes: A dust cover, a polarizing film on the dust cover, and a 1 / 4 film on the screen, wherein sunlight is incident on the polarizing film, the dust cover, the 1 / 4 film, and the screen in sequence; The polarizing film is used to transmit S-polarized light and resist the transmission of P-polarized light; The 1 / 4 film is used to transmit the S polarized light, so that the transmitted S polarized light is transformed into P polarized light after being reflected by the screen and passing through the 1 / 4 film again.

9. The device according to any one of claims 1 to 5, characterized in that The device also includes: A dust cover, a curved mirror, a polarizing film on the curved mirror, and a 1 / 4 film on the screen, wherein sunlight is incident on the dust cover, the polarizing film, the curved mirror, the 1 / 4 film, and the screen in sequence; The polarizing film is used to transmit S-polarized light and resist the transmission of P-polarized light; The 1 / 4 film is used to transmit the S polarized light, so that the transmitted S polarized light is transformed into P polarized light after being reflected by the screen and passing through the 1 / 4 film again.

10. The device according to claim 9, characterized in that The curved mirror comprises: A first curved mirror and a second curved mirror; The first curved mirror and the second curved mirror are used to sequentially reflect the imaging light.

11. A means of transport, characterized in that: The invention comprises the display device according to any one of claims 1 to 10, wherein the display device is installed on the vehicle.

12. The vehicle according to claim 11, characterized in that The transportation means also include: A reflective element, wherein the display device is used to project the imaging light onto the reflective element, and the reflective element is used to reflect the imaging light to form a virtual image.

Images