Screen device and head-up display

Abstract

The invention discloses a screen device and a head-up display. The screen device comprises a switching support, a screen, a screen cover, a backlight support and an LED backboard. The adapter support is provided with an inner cavity, the upper end and the lower end of the adapter support are open, and a containing groove is formed in the upper end face of the adapter support. And the screen can be placed in the accommodating groove. The screen cover is detachably connected with the switching support and limits the screen from being separated from the containing groove. The backlight support is provided with an inner cavity, the upper end and the lower end of the backlight support are open, the backlight support is detachably connected with the adapter support, an upper port of the backlight support is connected with a lower port of the adapter support, and a convex lens is arranged in the backlight support. The LED back plate is detachably connected with the backlight support, the LED back plate blocks a lower port of the backlight support, and light of the LED back plate faces the convex lens. And when the screen or the LED back plate is damaged, the screen or the LED back plate is convenient to replace without replacing the whole screen device, so that the maintenance cost is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of head-up displays, and in particular to a screen device and a head-up display. Background Art

[0002] The screen assembly is a core component of a head-up display (HUD) system, responsible for image generation and brightness control. Its performance directly impacts the system's image quality, size, and power consumption. Current screen assemblies typically integrate the backlight module and the screen by gluing or welding them together, making them non-detachable. Damage to the screen or LED light source requires complete module replacement, resulting in costly repairs. Summary of the Invention

[0003] The present invention aims to solve one of the technical problems in the related art at least to a certain extent. To this end, the present invention provides a screen device and a head-up display.

[0004] In a first aspect, an embodiment of the present invention provides a screen device, comprising:

[0005] The adapter support has an inner cavity and is open at both upper and lower ends, and the upper end surface of the adapter support is provided with a receiving groove;

[0006] A screen capable of being placed in the receiving slot;

[0007] A screen cover is detachably connected to the adapter support, and the screen cover prevents the screen from being separated from the receiving slot;

[0008] A backlight support having an inner cavity and openings at both upper and lower ends, the backlight support being detachably connected to the adapter support, the upper end of the backlight support being connected to the lower end of the adapter support, and a convex lens being provided in the backlight support;

[0009] The LED backboard is detachably connected to the backlight support. The LED backboard blocks the lower port of the backlight support, and the light of the LED backboard is directed toward the convex lens.

[0010] According to some embodiments of the present invention, an optical module is provided in the backlight support, the optical module is located above the convex lens, and the optical module is used to modulate light.

[0011] According to some embodiments of the present invention, the optical module includes a filter film, a light-homogenizing film and a diffusion film from bottom to top, and the light from the LED backplane passes through the convex lens, the filter film, the light-homogenizing film and the diffusion film in sequence before reaching the screen.

[0012] According to some embodiments of the present invention, the side wall of the adapter support is provided with a first clamping strip, and the side wall of the backlight support is provided with a first clamping slot, and the first clamping strip is inserted into the first clamping slot to make the adapter support and the backlight support snap-fitted and connected.

[0013] According to some embodiments of the present invention, the side wall of the adapter support is provided with a second clip, and the screen cover is provided with a second slot, and the second clip is inserted into the second slot to enable the adapter support and the screen cover to be buckled and connected.

[0014] According to some embodiments of the present invention, the upper end surface of the adapter support is inclined downward from front to back.

[0015] According to some embodiments of the present invention, the upper end surface of the adapter support, the screen and the screen cover are arranged in parallel.

[0016] According to some embodiments of the present invention, a light-transmitting hole is provided in the middle of the screen cover, and the imaging light of the screen passes upward through the light-transmitting hole. A dust-proof film is provided on the upper end surface of the screen cover, and the dust-proof film covers the light-transmitting hole.

[0017] According to some embodiments of the present invention, a side wall of the adapter support is provided with a positioning groove, and a side wall of the backlight support is provided with a positioning bar, and the positioning bar is inserted into the positioning groove.

[0018] The screen device according to the embodiment of the present invention has at least the following technical effects:

[0019] 1. Since the screen is fixed on the rotating support under the joint constraints of the receiving slot and the screen cover, the LED backplane and the backlight support are detachably connected, so that the screen device can be replaced with screens and LED backplanes of different specifications as needed, thereby improving modularity and reducing production costs.

[0020] 2. When the screen or LED back panel is damaged, it is easy to replace without replacing the entire screen device, thereby reducing maintenance costs.

[0021] In a second aspect, an embodiment of the present invention further provides a head-up display, comprising a screen device according to an embodiment of the first aspect of the present invention.

[0022] The head-up display according to the embodiment of the present invention has at least the following technical effects: the head-up display adopts the screen device, and since the screen is fixed on the rotating support under the joint restriction of the receiving groove and the screen cover, the LED backplane and the backlight support are detachably connected, so that the screen device can be replaced with screens and LED backplanes of different specifications as needed, thereby improving modularity and reducing production costs. Moreover, when the screen or LED backplane is damaged, it is also convenient to replace it without replacing the entire screen device, thereby reducing maintenance costs.

[0023] Additional aspects and advantages of the present invention will be set forth in part in the description which follows and, in part, will be obvious from the description which follows, or may be learned by practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the following description of the embodiments with reference to the accompanying drawings, in which:

[0025] Figure 1 is a schematic structural diagram of a screen device according to some embodiments of the present invention;

[0026] Figure 2 is a schematic structural diagram of a screen device according to some embodiments of the present invention from another angle;

[0027] Figure 3 is an exploded diagram of a screen device according to some embodiments of the present invention.

[0028] Figure Number:

[0029] Adaptation support 100; accommodating slot 101; first clamping strip 110; second clamping strip 120;

[0030] Screen 200; positioning bar 210; positioning groove 220;

[0031] Screen cover 300; second card slot 310; light-transmitting hole 320;

[0032] Backlight support 400; convex lens 410; optical module 420; filter film 421; light-distributing film 422; diffusion film 423; first card slot 430;

[0033] LED back panel 500. DETAILED DESCRIPTION

[0034] The following describes embodiments of the present invention in detail. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended only to explain the present invention and are not to be construed as limiting the present invention.

[0035] In the description of the present invention, it should be understood that descriptions involving orientations, such as up, down, front, back, left, right, etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as limitations on the present invention.

[0036] In the description of the present invention, "several" means one or more, "many" means more than two, "greater than," "less than," and "exceed" are understood to exclude the number itself, while "above," "below," and "within" are understood to include the number itself. The use of "first" and "second" in the description is solely for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance, implicitly specifying the number of the indicated technical features, or implicitly specifying the order of the indicated technical features.

[0037] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, and connecting should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0038] The embodiments of the present invention are further described below with reference to the accompanying drawings.

[0039] According to some embodiments of the present invention, a screen device includes an adapter support 100, a screen 200, a screen cover 300, a backlight support 400, and an LED back panel 500. The adapter support 100 has an inner cavity and is open at both upper and lower ends. The upper end surface of the adapter support 100 is provided with a receiving groove 101. The screen 200 can be placed in the receiving groove 101. The screen cover 300 is detachably connected to the adapter support 100, and the screen cover 300 restricts the screen 200 from being separated from the receiving groove 101. The backlight support 400 has an inner cavity and is open at both upper and lower ends. The backlight support 400 is detachably connected to the adapter support 100, the upper port of the backlight support 400 is connected to the lower port of the adapter support 100, and a convex lens 410 is provided in the backlight support 400. The LED back panel 500 and the backlight support 400 are detachably connected by bolts. The LED back panel 500 blocks the lower port of the backlight support 400 , and the light of the LED back panel 500 is directed toward the convex lens 410 .

[0040] It can be understood that since the screen 200 is fixed on the rotating support under the joint constraints of the accommodating groove 101 and the screen cover 300, the LED back panel 500 is detachably connected to the backlight support 400, so that the screen device can replace screens 200 and LED back panels 500 of different specifications as needed, thereby improving modularity and reducing production costs. Moreover, when the screen 200 or the LED back panel 500 is damaged, it is also convenient to replace them without replacing the entire screen device, thereby reducing maintenance costs.

[0041] This modular, split design allows the screen 200 and backlight system to form independent thermal management units. Heat from the screen 200 is dissipated upward through the metal screen cover 300, while heat from the LED backplane 500 is directed downward through the backlight support 400. This dual-path heat dissipation avoids the heat accumulation effect of traditional structures. The detachable connection allows upgrades to replace only the optical engine without affecting the mechanical frame, significantly reducing iteration costs.

[0042] It should be noted that the screen 200 has a metal frame that abuts the walls of the receiving slot 101. The walls of the receiving slot 101 together restrict horizontal and downward movement of the screen 200. When assembled and connected to the adapter support 100, the screen cover 300 restricts upward movement of the screen 200, thereby securing the screen 200 relative to the adapter support 100. Furthermore, when the screen 200 is adapted to display screens of different sizes, its metal frame can be adaptively adjusted, maintaining the overall specifications of the screen 200. This ensures that the receiving slot 101 and the screen 200 are compatible with each other, without requiring replacement of the adapter support 100.

[0043] According to some embodiments of the present invention, referring to Figure 3 An optical module 420 is disposed within the backlight support 400 and is located above the convex lens 410. The optical module 420 is used to modulate light. Preferably, the optical module 420 includes, from bottom to top, a filter film 421, a light-distributing film 422, and a diffusion film 423. Light from the LED backplane 500 passes through the convex lens 410, the filter film 421, the light-distributing film 422, and the diffusion film 423 before reaching the screen 200.

[0044] It can be understood that the LED backplane 500, as the initial light source of the system, is composed of multiple high-brightness LED chips arranged in a matrix. Its core function is to emit a scattered light beam with a high lumen density, but the original light is a point light source, resulting in uneven brightness, infrared / ultraviolet stray light in the spectrum, and random light-emitting angles, resulting in waste of light efficiency.

[0045] The convex lens 410 array is located directly above the LED backplane 500 and adopts an aspheric free-form surface design. Each lens unit precisely corresponds to a single LED, compressing large-angle scattered light into small-angle collimated light through refraction, thereby eliminating the dark areas caused by the LED spacing. At the same time, it improves the lateral light intensity uniformity to more than 80% and provides a direction-controllable light foundation for subsequent optical processing.

[0046] The filter film 421 is composed of a bandpass interference coating that specifically absorbs or reflects ultraviolet rays with wavelengths less than 400nm and infrared rays with wavelengths greater than 700nm, thereby preventing material aging and blocking thermal radiation, allowing only the visible spectrum to penetrate, and preventing stray light from interfering with color reproduction.

[0047] The surface of the light-homogenizing film 422 is densely covered with micron-scale lens structures, which disrupt the light path distribution through multiple refractions and reflections, compensate for the optical path difference between the center and the edge, reduce the fluctuation of the collimated light intensity output by the lens array, and achieve surface uniformity of >95%.

[0048] The surface of the diffusion film 423 is provided with random microprisms or internal scattering particles, which soften the light and destroy the coherence of the light waves to eliminate interference fringes such as Newton's rings. At the same time, the microstructure diffuses the light to a wide angle of 140°, ultimately outputting a uniform milky white backlight without graininess or glare.

[0049] Screen 200 acts as an image information carrier. When the backlight penetrates its pixel array, the transmittance of each pixel is modulated by deflection of liquid crystal molecules, converting the electronic signal into a spatial image with grayscale and color. This process loads graphic information such as navigation icons and vehicle speed to generate the original virtual image.

[0050] Finally, the imaging light emitted from the screen 200 is refracted by the subsequent reflective mirror and the curved mirror, and finally reflected onto the glass for the user to watch.

[0051] According to some embodiments of the present invention, referring to Figures 1 to 3 The sidewall of the adapter support 100 is provided with a first retaining strip 110, and the sidewall of the backlight support 400 is provided with a first retaining slot 430. The first retaining strip 110 is inserted into the first retaining slot 430, thereby interlocking the adapter support 100 and the backlight support 400, thereby securing the adapter support 100 and the backlight support 400 to each other. The interference fit between the first retaining strip 110 and the first retaining slot 430 generates a continuous radial compressive force, effectively suppressing axial micro-displacement caused by vehicle jolting and preventing misalignment of the optical components.

[0052] According to some embodiments of the present invention, referring to Figures 1 to 3 The sidewall of the adapter support 100 is provided with a second retaining strip 120, and the upper end surface of the screen cover 300 is provided with a second retaining slot 310. The second retaining strip 120 is elastic. When the screen 200 covers the upper end surface of the adapter support 100, the screen cover 300 moves downward over the second retaining strip 120. The second retaining strip 120 then recovers under the action of elasticity and applies a downward force to the screen cover 300, so that the second retaining strip 120 is inserted into the second retaining slot 310, thereby locking the adapter support 100 and the screen cover 300 together and fixing the adapter support 100 and the screen cover 300 relative to each other. The second retaining strip 120 generates a progressive feedback force when the screen cover 300 is pressed down, allowing the operator to confirm that the assembly is in place by feel.

[0053] According to some embodiments of the present invention, referring to Figure 1 and Figure 2 The upper end surface of the adapter support 100 is tilted downward from front to back. The upper end surface of the adapter support 100, the screen 200, and the screen cover 300 are arranged in parallel. Under the action of gravity, dust and moisture on the surface of the screen 200 can move downward, ensuring that the surface of the screen 200 is clean.

[0054] According to some embodiments of the present invention, referring to Figure 3A light hole 320 is provided in the middle of the screen cover 300, through which imaging light from the screen 200 passes upward. A dustproof film is provided on the upper end surface of the screen cover 300. The dustproof film is bonded to the upper surface of the screen cover 300 and covers the light hole 320. The dustproof film is a composite structure of magnesium fluoride coating and nano-titanium dioxide, which produces a photocatalytic self-cleaning effect under ultraviolet light excitation.

[0055] According to some embodiments of the present invention, referring to Figure 1 The side wall of the adapter support 100 is provided with a positioning groove 220, which extends in the up and down direction, with the notch of the positioning groove 220 facing downward. The side wall of the backlight support 400 is provided with a positioning bar 210, which is inserted upward into the positioning groove 220 to play a positioning role.

[0056] The synergy between modular architecture and optical design creates three key advantages: First, the removable connection allows each component to be independently hardened—the adapter mount 100 is anodized for wear resistance, the screen cover 300 is laser-micro-engraved with anti-glare patterns, and the LED backplane 500 is gold-plated for improved thermal conductivity—a process advantage unattainable with traditional monolithic packaging. Second, the split structure allows for customized heat dissipation paths for different components. The screen area 200 utilizes an upward-facing thermal grease layer, while the LED area features a downward-facing heat spreader, completely eliminating the heat concentration associated with HUD miniaturization. Finally, the snap-on positioning system maintains axial parallelism within ±0.1° during reassembly after repair, ensuring that the virtual image position does not shift due to disassembly or assembly.

[0057] This leap in optical performance stems from three key innovations: the light-focusing properties of the convex lens array 410 complement the microstructure of the light-homogenizing film 422. The former addresses dark areas caused by the spacing between light sources, while the latter eliminates optical distortion within the lens. The upper and lower clamping of the filter film 421 and the diffuser film 423 form a "spectral purification channel," softening the visible light wavefront while blocking harmful radiation. The tilted installation of the screen 200 and the combined effect of the dust-proof film minimize interference from ambient light.

[0058] Throughout this specification, references to the term "some embodiments" indicate that a specific feature, structure, material, or characteristic described in conjunction with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, schematic representations of these terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0059] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to the embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the claims and their equivalents.

Claims

1. A screen device, characterized in that: include: The adapter support (100) has an inner cavity and is open at both upper and lower ends, and the upper end surface of the adapter support (100) is provided with a receiving groove (101); A screen (200) capable of being placed in the receiving groove (101); a screen cover (300) detachably connected to the transfer support (100), the screen cover (300) restricting the screen (200) from being separated from the receiving groove (101); A backlight support (400) having an inner cavity and openings at both upper and lower ends; the backlight support (400) is detachably connected to the adapter support (100); an upper port of the backlight support (400) is connected to a lower port of the adapter support (100); and a convex lens (410) is provided in the backlight support (400); The LED back panel (500) is detachably connected to the backlight support (400), the LED back panel (500) blocks the lower port of the backlight support (400), and the light of the LED back panel (500) is directed toward the convex lens (410).

2. The screen device according to claim 1, characterized in that An optical module (420) is provided in the backlight support (400), the optical module (420) is located above the convex lens (410), and the optical module (420) is used to modulate light.

3. The screen device according to claim 2, characterized in that The optical module (420) includes, from bottom to top, a filter film (421), a light-homogenizing film (422), and a diffusion film (423); light from the LED back panel (500) passes through the convex lens (410), the filter film (421), the light-homogenizing film (422), and the diffusion film (423) in sequence before reaching the screen (200).

4. The screen device according to claim 1, characterized in that A first clamping strip (110) is provided on the side wall of the transfer support (100), and a first clamping slot (430) is provided on the side wall of the backlight support (400); the first clamping strip (110) is inserted into the first clamping slot (430) to enable the transfer support (100) and the backlight support (400) to be buckled and connected.

5. The screen device according to claim 1, characterized in that The side wall of the transfer support (100) is provided with a second clamping strip (120), and the screen cover (300) is provided with a second clamping slot (310). The second clamping strip (120) is inserted into the second clamping slot (310) so that the transfer support (100) and the screen cover (300) are buckled and connected.

6. The screen device according to claim 1, characterized in that The upper end surface of the transfer support (100) is inclined downward from front to back.

7. The screen device according to claim 6, characterized in that The upper end surface of the transfer support (100), the screen (200) and the screen cover (300) are arranged in parallel.

8. The screen device according to claim 1, characterized in that A light-transmitting hole (320) is provided in the middle of the screen cover (300), and imaging light of the screen (200) passes upward through the light-transmitting hole (320). A dust-proof film is provided on the upper end surface of the screen cover (300), and the dust-proof film covers the light-transmitting hole (320).

9. The screen device according to claim 1, characterized in that A positioning groove (220) is provided on the side wall of the transfer support (100), and a positioning bar (210) is provided on the side wall of the backlight support (400), wherein the positioning bar (210) is inserted into the positioning groove (220).

10. A head-up display, characterized in that: The invention comprises a screen device according to any one of claims 1 to 9.

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