Screen device and head-up display

Abstract

The utility model discloses a screen device and head-up display, screen device includes adapter support, screen, screen cover, backlight support and LED backboard. Adapter support has inner chamber and both ends are open, and the upper end surface of adapter support is equipped with the accommodation groove. Screen can be placed in the accommodation groove. Screen cover is detachably connected with adapter support, and screen cover restricts screen to separate from the accommodation groove. Backlight support has inner chamber and both ends are open, and backlight support is detachably connected with adapter support, and the upper port of backlight support is connected with the lower port of adapter support, and the convex lens is equipped in the backlight support. LED backboard is detachably connected with backlight support, and LED backboard blocks the lower port of backlight support, and the light of LED backboard is towards convex lens. When screen or LED backboard is damaged, it is convenient to replace and does not need to replace entire screen device, thereby reducing maintenance cost.

Description

Technical Field

[0001] This utility model relates to the field of head-up display technology, and in particular to a screen device and a head-up display. Background Technology

[0002] The screen device is the core component of a head-up display (HUD) system, responsible for generating images and controlling brightness. Its performance directly affects the HUD system's image quality, size, and power consumption. Current screen devices typically integrate the backlight module with the screen using adhesive or welding, resulting in a non-removable design. When the screen or LED light source fails, the entire module must be replaced, leading to high repair costs. Utility Model Content

[0003] This invention aims to at least partially solve one of the technical problems in the related art. To this end, this invention proposes a screen device and a head-up display.

[0004] In a first aspect, embodiments of the present invention provide a screen device, the screen device comprising:

[0005] The adapter support has an inner cavity and is open at both the top and bottom ends. The upper end face of the adapter support is provided with a receiving groove.

[0006] The screen can be placed within the receiving slot;

[0007] The screen cover is detachably connected to the adapter bracket, and the screen cover prevents the screen from detaching from the receiving slot;

[0008] A backlight support has an inner cavity and openings at both the top and bottom. The backlight support is detachably connected to the adapter support. The upper port of the backlight support is connected to the lower port of the adapter support. A convex lens is provided inside the backlight support.

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

[0010] According to some embodiments of the present invention, an optical module is provided inside 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-diffusing film, and a diffusion film from bottom to top. The light from the LED backplate passes through the convex lens, the filter film, the light-diffusing 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 locking strip, and the side wall of the backlight support is provided with a first locking groove. The first locking strip is inserted into the first locking groove to fasten and connect the adapter support and the backlight support.

[0013] According to some embodiments of this utility model, the side wall of the adapter support is provided with a second locking strip, and the screen cover is provided with a second locking groove. The second locking strip is inserted into the second locking groove to fasten the adapter support and the screen cover together.

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

[0015] According to some embodiments of this utility model, the upper end face of the adapter, the screen, and the screen cover are arranged in parallel.

[0016] According to some embodiments of the present invention, the screen cover has a light-transmitting hole in the middle, the imaging light of the screen passes upward through the light-transmitting hole, and the upper surface of the screen cover has a dustproof film covering the light-transmitting hole.

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

[0018] The screen device according to the embodiments of the present utility model 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, and the LED backplate and the backlight support are detachably connected, the screen device can be replaced with different specifications of screen and LED backplate according to needs, 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] Secondly, embodiments of the present invention also provide a head-up display, including a screen device according to the first aspect of the present invention described above.

[0022] The head-up display according to the embodiments of the present utility model has at least the following technical effects: the head-up display uses this screen device, and since the screen is fixed on the rotating support under the joint constraint of the receiving groove and the screen cover, and the LED back plate is detachably connected to the backlight support, the screen device can be replaced with screens and LED back plates of different specifications as needed, thereby improving modularity and reducing production costs. Moreover, when the screen or LED back plate is damaged, it is easy to replace without replacing the entire screen device, thereby reducing maintenance costs.

[0023] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0024] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

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

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

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

[0028] Icon labels:

[0029] Adapter support 100; receiving groove 101; first retaining strip 110; second retaining strip 120;

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

[0031] Screen cover 300; Second card slot 310; Light transmission hole 320;

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

[0033] 500 LED backplate. Detailed Implementation

[0034] The embodiments of this utility model are described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

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

[0036] In the description of this utility model, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. If "first" or "second" is used in the description, it is only for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0037] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0038] The embodiments of this utility model will be further described below with reference to the accompanying drawings.

[0039] According to some embodiments of this utility model, the screen device includes an adapter support 100, a screen 200, a screen cover 300, a backlight support 400, and an LED backplate 500. The adapter support 100 has an inner cavity and openings at both its upper and lower ends. A receiving groove 101 is provided on the upper surface of the adapter support 100. The screen 200 can be placed within the receiving groove 101. The screen cover 300 is detachably connected to the adapter support 100, and the screen cover 300 prevents the screen 200 from detaching from the receiving groove 101. The backlight support 400 has an inner cavity and openings at both its upper and lower ends. The backlight support 400 is detachably connected to the adapter support 100, and its upper port is connected to the lower port of the adapter support 100. A convex lens 410 is provided inside the backlight support 400. The LED backplate 500 and the backlight support 400 are detachably connected by bolts. The LED backplate 500 blocks the lower port of the backlight support 400, and the light from the LED backplate 500 is directed toward the convex lens 410.

[0040] Understandably, since the screen 200 is fixed to the rotating support under the joint constraints of the receiving slot 101 and the screen cover 300, and the LED backplate 500 is detachably connected to the backlight support 400, the screen device can be replaced with different specifications of screen 200 and LED backplate 500 as needed, thereby improving modularity and reducing production costs. Moreover, when the screen 200 or LED backplate 500 is damaged, it is easy to replace without replacing the entire screen device, thereby reducing maintenance costs.

[0041] The modular and separate design of this technical solution allows the screen 200 and the backlight system to form independent thermal management units. The heat from the screen 200 is dissipated upwards through the metal material of the screen cover 300, while the heat from the LED backplate 500 is dissipated downwards through the backlight support 400. This dual-path heat dissipation avoids the heat accumulation effect of traditional structures. The detachable connection allows for the replacement of only the optical engine during upgrades without affecting the mechanical frame, significantly reducing iteration costs.

[0042] It should be noted that the screen 200 has a metal frame, which abuts against the wall of the receiving slot 101. The wall of the receiving slot 101 restricts the screen 200 from moving horizontally and downwards. Meanwhile, after the screen cover 300 is assembled and connected to the adapter bracket 100, it restricts the screen 200 from moving upwards, thus fixing the screen 200 and the adapter bracket 100 relatively. Furthermore, when the screen 200 uses displays of different sizes, its metal frame is adjusted accordingly, ensuring that the overall specifications of the screen 200 remain unchanged. This guarantees that the receiving slot 101 and the screen 200 are compatible, eliminating the need to replace the adapter bracket 100.

[0043] According to some embodiments of this utility model, refer to Figure 3 An optical module 420 is provided inside the backlight support 400. The optical module 420 is located above the convex lens 410 and is used to modulate light. Preferably, the optical module 420 includes a filter film 421, a light-diffusing film 422, and a diffusion film 423 from bottom to top. The light from the LED back panel 500 passes through the convex lens 410, the filter film 421, the light-diffusing film 422, and the diffusion film 423 in sequence before reaching the screen 200.

[0044] Understandably, the LED backplate 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 beam of high lumen density. However, the original light is a point light source, which leads to uneven brightness, infrared / ultraviolet stray light in the spectrum, and random emission angle, resulting in wasted light efficiency.

[0045] The convex lens 410 array is located directly above the LED backplate 500. It adopts an aspherical freeform surface design, with each lens unit precisely corresponding to a single LED. Through refraction, it compresses large-angle scattered light into small-angle collimated light, thereby eliminating the dark areas caused by the LED spacing. At the same time, it improves the lateral light intensity uniformity to over 80% and provides a directionally controllable light foundation for subsequent optical processing.

[0046] The filter film 421 is composed of a bandpass interference coating, which specifically absorbs or reflects ultraviolet rays with wavelengths <400nm and infrared rays >700nm, thereby preventing material aging and blocking heat radiation, allowing only visible light to pass through, and avoiding stray light interference with color reproduction.

[0047] The surface of the homogenizing film 422 is densely covered with micron-sized lens structures. Through multiple refractions and reflections, the optical path distribution is disrupted, the optical path difference between the center and the edge is compensated, and the intensity fluctuation of the collimated light output by the lens array is reduced, achieving a surface uniformity of >95%.

[0048] The surface of the diffusion film 423 is provided with random microprisms or internal scattering particles to 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°, and finally outputs a uniform milky white backlight without graininess or glare.

[0049] As an image information carrier, screen 200 modulates the transmittance of each pixel by deflecting liquid crystal molecules when backlight passes through its pixel array, converting electronic signals into a spatial image with grayscale levels and colors. This process loads graphic information such as navigation icons and vehicle speed to generate the original virtual image.

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

[0051] According to some embodiments of this utility model, refer to Figures 1 to 3 The adapter support 100 has a first retaining strip 110 on its side wall, and the backlight support 400 has a first retaining groove 430 on its side wall. The first retaining strip 110 is inserted into the first retaining groove 430 to engage and connect the adapter support 100 and the backlight support 400, thereby fixing them to each other. The interference fit between the first retaining strip 110 and the first retaining groove 430 generates a continuous radial clamping force, effectively suppressing axial micro-displacement caused by vehicle bumps and preventing misalignment of the optical components.

[0052] According to some embodiments of this utility model, refer to Figures 1 to 3 The adapter bracket 100 has a second locking strip 120 on its side wall, and the screen cover 300 has a second locking groove 310 on its upper surface. The second locking strip 120 is elastic. When the screen 200 covers the upper surface of the adapter bracket 100, the screen cover 300 moves downward past the second locking strip 120. The second locking strip 120 then recovers under its elasticity and applies a downward force to the screen cover 300, causing the second locking strip 120 to insert into the second locking groove 310, thus engaging and connecting the adapter bracket 100 and the screen cover 300, thereby fixing the adapter bracket 100 and the screen cover 300 relatively in place. The second locking 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 touch.

[0053] According to some embodiments of this utility model, refer to Figure 1 and Figure 2 The upper surface of the adapter 100 slopes downwards from front to back. The upper surface of the adapter 100, the screen 200, and the screen cover 300 are arranged parallel to each other. Under the influence of gravity, dust and moisture on the surface of the screen 200 can move downwards, ensuring that the surface of the screen 200 is clean.

[0054] According to some embodiments of this utility model, refer to Figure 3The screen cover 300 has a light-transmitting hole 320 in the center, through which the imaging light from the screen 200 passes upward. A dustproof film is provided on the upper surface of the screen cover 300, adhering to the upper surface and covering the light-transmitting hole 320. The dustproof film uses a composite structure of magnesium fluoride coating and nano-titanium dioxide, generating a photocatalytic self-cleaning effect under ultraviolet excitation.

[0055] According to some embodiments of this utility model, refer to Figure 1 The side wall of the adapter support 100 is provided with a positioning groove 220, which extends in the vertical direction and the opening of the positioning groove 220 faces downward. The side wall of the backlight support 400 is provided with a positioning strip 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, detachable connections allow for independent surface hardening of each component—the adapter bracket 100 is anodized for enhanced wear resistance, the screen cover 300 features laser-engraved anti-glare texture, and the LED backplate 500 is gold-plated to improve thermal conductivity—a technological advantage that traditional monolithic packaging cannot achieve. Second, the split structure allows for customized heat dissipation paths for different components; the screen 200 area uses an upward-conducting thermal grease layer, while the LED area features a downward-facing heat spreader, completely resolving the heat concentration issue after HUD miniaturization. Finally, the snap-fit ​​positioning system maintains the axial parallelism of the optical components within ±0.1° during reassembly after maintenance, ensuring that the virtual image position does not shift due to disassembly and reassembly.

[0057] The leap in optical performance stems from the combination of three innovative features: the light-gathering characteristics of the convex lens array 410 complement the microstructure of the light-diffusing film 422, with the former solving the dark area caused by the distance between light sources and the latter eliminating the optical distortion of the lens itself; the upper and lower clamping of the filter film 421 and the diffuser film 423 forms a "spectral purification channel", which softens the visible light wavefront while blocking harmful radiation; and the combined effect of the tilted installation of the screen 200 and the dustproof film reduces ambient light interference.

[0058] In this specification, the reference to the term "some embodiments" means that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above 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 one or more embodiments or examples.

[0059] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which 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 the top and bottom ends. The upper end face of the adapter support (100) is provided with a receiving groove (101). The screen (200) can be placed in the receiving slot (101); The screen cover (300) is detachably connected to the adapter support (100), and the screen cover (300) restricts the screen (200) from being disengaged from the receiving groove (101); A backlight support (400) has an inner cavity and is open at both the top and bottom. 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). A convex lens (410) is provided inside the backlight support (400). The LED backplate (500) is detachably connected to the backlight support (400). The LED backplate (500) blocks the lower port of the backlight support (400), and the light from the LED backplate (500) is directed toward the convex lens (410).

2. The screen device according to claim 1, characterized in that, The backlight support (400) is provided with an optical module (420), which is located above the convex lens (410) and 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-diffusing film (422), and a diffusion film (423). The light from the LED backplate (500) passes through the convex lens (410), the filter film (421), the light-diffusing 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, The adapter support (100) has a first locking strip (110) on its side wall, and the backlight support (400) has a first locking groove (430) on its side wall. The first locking strip (110) is inserted into the first locking groove (430) to make the adapter support (100) and the backlight support (400) fastened together.

5. The screen device according to claim 1, characterized in that, The side wall of the adapter (100) is provided with a second locking strip (120), and the screen cover (300) is provided with a second locking groove (310). The second locking strip (120) is inserted into the second locking groove (310) to make the adapter (100) and the screen cover (300) fastened together.

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

7. The screen device according to claim 6, characterized in that, The upper surface of the adapter 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, The screen cover (300) has a light-transmitting hole (320) in the middle, and the imaging light of the screen (200) passes upward through the light-transmitting hole (320). The upper surface of the screen cover (300) is provided with a dustproof film, which covers the light-transmitting hole (320).

9. The screen device according to claim 1, characterized in that, The side wall of the adapter support (100) is provided with a positioning groove (220), and the side wall of the backlight support (400) is provided with a positioning strip (210), which is inserted into the positioning groove (220).

10. A heads-up display, characterized in that, It includes a screen device as described in any one of claims 1 to 9.

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