A head-up display device and vehicle

Abstract

The present disclosure relates to the technical field of display, and particularly relates to a head-up display device and a vehicle. The head-up display device comprises a display panel, a cover, an adhesive layer and a support piece. The cover is located on the side of the light-out surface away from the backlight surface. The cover comprises a bottom plate, and the bottom plate has an opening area and a peripheral area surrounding the opening area. In the thickness direction of the display panel, the peripheral area has a first overlapping area with the display panel, and the opening area exposes part of the display panel. The adhesive layer is located between the cover and the display panel, and the adhesive layer is located in the first overlapping area and is arranged along the circumference of the opening area. The adhesive layer is used for fixedly connecting the cover and the display panel. The support piece is located on the side of the backlight surface away from the light-out surface. The support piece is detachably connected with the cover, and there is a gap between the support piece and the display panel. The head-up display device provided by the present disclosure can effectively improve the yellowing problem of the display panel caused by pressure.

Description

Technical Field

[0001] This disclosure relates to the field of display technology, and more particularly to a head-up display device and a vehicle. Background Technology

[0002] Head-up displays (HUDs) are commonly used in vehicles. By projecting light emitted from the HUD's image source onto an external imaging component, the light is reflected to form a virtual image, which the driver can directly view. Drivers can see driving parameters without looking down, thus improving the user experience and preventing the driving hazards associated with looking down.

[0003] Liquid crystal display (LCD) panels are common image display units in head-up display (HUD) devices. Currently, most HUDs use mechanical compression to fix the LCD, but this method causes the LCD screen to yellow due to pressure, severely affecting display quality. Summary of the Invention

[0004] To address the aforementioned technical problems, this disclosure provides a head-up display device and a vehicle.

[0005] This disclosure provides a head-up display (HUD) device. The HUD device includes a display panel, a cover, an adhesive layer, and a support member. The display panel includes an opposing light-emitting surface and a backlight surface. The cover is located on the side of the light-emitting surface away from the backlight surface. The cover includes a base plate having an opening area and a peripheral area surrounding the opening area. Along the thickness direction of the display panel, the peripheral area has a first overlapping area with the display panel, and a portion of the display panel is exposed in the opening area. The adhesive layer is located between the cover and the display panel, and is situated within the first overlapping area, disposed circumferentially along the opening area. The adhesive layer is used to securely connect the cover and the display panel. The support member is located on the side of the backlight surface away from the light-emitting surface. The support member is detachably connected to the cover, and a gap exists between the support member and the display panel.

[0006] Based on the same inventive concept, this disclosure also provides a vehicle. The vehicle includes the head-up display device of any of the above claims.

[0007] Compared with the prior art, the technical solution provided in this disclosure has the following advantages: In the head-up display device provided in this disclosure, the light-emitting side of the display panel is not directly contacted and fixedly connected to the cover, but is fixedly connected through an adhesive layer and the cover. Similarly, on the backlight side, the display panel is not directly contacted and fixedly connected to the support member, but is detachably connected to the cover, forming a receiving area between the support member and the cover, with the display panel located within this receiving area. Thus, a gap can be maintained between the support member and the backlight side of the display panel, preventing them from contacting each other. The backlight side of the display panel is suspended, and the support member does not exert any pressure on the display panel. Therefore, the display panel only bears the adhesive force from the adhesive layer, effectively improving the problem of screen yellowing caused by external pressure on the panel in existing solutions. Attached Figure Description

[0008] The accompanying drawings, which are incorporated in and form a part of this specification, illustrate embodiments consistent with this disclosure and, together with the description, serve to explain the principles of this disclosure.

[0009] To more clearly illustrate the technical solutions in the embodiments of this disclosure or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0010] Figure 1 A schematic diagram of the structure of a head-up display device provided in the prior art; Figure 2 A partial cross-sectional view of a head-up display device provided in the prior art; Figure 3 A structural diagram of a head-up display device provided in an embodiment of this disclosure; Figure 4 A side view of a head-up display device provided in an embodiment of this disclosure; Figure 5 An exploded view of a head-up display device provided in an embodiment of this disclosure; Figure 6 An assembly structure diagram of a cover and a display panel provided in an embodiment of this disclosure; Figure 7 This is a schematic diagram of the structure of a cover provided in an embodiment of the present disclosure; Figure 8 for Figure 4 A magnified view of a portion of Q; Figure 9 This is a schematic diagram of a vehicle structure provided for an embodiment of the present disclosure. Detailed Implementation

[0011] To better understand the above-mentioned objectives, features, and advantages of this disclosure, the solutions disclosed herein will be further described below. It should be noted that, unless otherwise specified, the embodiments and features described herein can be combined with each other.

[0012] Numerous specific details are set forth in the following description in order to provide a full understanding of this disclosure, but this disclosure may also be implemented in other ways different from those described herein; obviously, the embodiments in the specification are only some, and not all, of the embodiments of this disclosure.

[0013] Figure 1 A schematic diagram of the structure of a head-up display device provided in the prior art. Figure 2 A partial cross-sectional view of a head-up display device provided for the prior art.

[0014] In existing technologies, combined with Figure 1 and Figure 2 As shown, the head-up display device 01 includes a liquid crystal display panel 02, a bracket 03, and a cover 04. The bracket 03 is located on one side of the liquid crystal display panel 02, and a first limiting member 031 is provided around the bracket 03. The first limiting member 031 can be a spring-loaded leg or a rib, used to fix the liquid crystal display panel 02 and prevent it from shifting. The cover 04 is located on the side of the liquid crystal display panel 02 away from the bracket 03, and a second limiting member 041 is provided on the cover 04. The second limiting member 041 can be a spring-loaded leg or a flat contact portion, used to fix the liquid crystal display panel 02 and prevent it from shifting along its thickness direction. Foam may be provided between the cover 04 and the liquid crystal display panel 02 to reduce the pressure on the liquid crystal display panel 02.

[0015] As shown in the above structure, the liquid crystal display panel 02 is subjected to external pressure from the bracket 03 and the cover 04, resulting in a yellowish image during imaging. Although reducing the pressure on the liquid crystal display panel 02 can improve the yellowing, sufficient clamping force is required to ensure that the liquid crystal display panel 02 does not shake or fall off during reliability tests such as temperature-controlled random vibration tests or impact tests. Therefore, the existing structure faces a dilemma: it must reduce the pressure to improve the yellowing while ensuring sufficient clamping pressure to pass reliability tests. Thus, the existing structure can only reduce the force on the liquid crystal display panel 02, but cannot completely eliminate the pressure on it. This only improves the yellowing phenomenon and cannot fundamentally solve the problem.

[0016] Based on this, the present disclosure provides a head-up display device 100, which can effectively improve the problem of screen yellowing caused by external pressure in the prior art.

[0017] Figure 3This is a structural diagram of a head-up display device provided in an embodiment of the present disclosure. Figure 4 This is a side view of a head-up display device provided in an embodiment of the present disclosure. Figure 5 An exploded view of a head-up display device provided in an embodiment of this disclosure.

[0018] Combination Figures 3-5 As shown, the head-up display device 100 provided in some embodiments of this disclosure includes: a display panel 10, a cover 20, an adhesive layer 30, and a support member 40.

[0019] The display panel 10 includes a light-emitting surface and a backlight surface C2.

[0020] For example, the display panel 10 may be a liquid crystal display (LCD). However, the present disclosure embodiments are not limited to this type of display panel 10.

[0021] The cover 20 is located on the side of the display panel 10 away from the backlight surface C2. The cover 20 includes a base plate 21, which has an opening area K and a peripheral area F surrounding the opening area K. Along the third direction Z, the peripheral area F has a first overlapping area R with the display panel 10, and the opening area K exposes a portion of the display panel 10. Here, the third direction Z can be the thickness direction of the display panel 10.

[0022] Understandably, since the cover 20 is positioned on the light-emitting side of the display panel 10, an opening area K can be provided on the base plate 21 of the cover 20 to expose the display panel 10, allowing the light emitted from the display panel 10 to be emitted normally for image display. Simultaneously, the base plate 21 of the cover 20 can also have a peripheral area F around the opening area K. The orthographic projection of the peripheral area F onto the plane of the display panel 10 has a first overlapping area R with the display panel 10, meaning the peripheral area F is located on the display surface side of the display panel 10 and covers the edge area of ​​the display panel 10. Therefore, the peripheral area F can both block stray light generated at the edge of the display panel 10 and provide an adhesive bearing surface for the adhesive layer 30.

[0023] For example, the display panel 10 has a display area and a non-display area surrounding the display area. Along the third direction Z, the opening area K overlaps with the display area, and the peripheral area F overlaps with the non-display area. For example, along the third direction upward, the opening area K coincides with the display area, and the peripheral area F coincides with the non-display area.

[0024] With this configuration, the opening area K of the cover 20 exposes the display area of ​​the display panel 10, allowing the light from the display area to be emitted normally; the peripheral area F covers the non-display area of ​​the display panel 10, which not only blocks stray light generated by the non-display area, but also provides an adhesive bearing surface for the adhesive layer 30.

[0025] The adhesive layer 30 is located between the cover 20 and the display panel 10, and the adhesive layer 30 is located in the first overlapping area R and is arranged circumferentially along the opening area K. The adhesive layer 30 is used to fix the cover 20 and the display panel 10.

[0026] It is understandable that, since the adhesive layer 30 is disposed in the first overlapping area R between the peripheral area F of the cover 20 and the non-display area of ​​the display panel 10, and is disposed circumferentially along the opening area K, the adhesive layer 30 is distributed around the display area of ​​the display panel 10. Thus, the cover 20 and the display panel 10 are separated by the adhesive layer 30, and there is no direct contact between them. The adhesive layer 30 constitutes the only fixing structure between the display panel 10 and the cover 20. The display panel 10 is fixedly connected to the cover 20 only through the adhesive layer 30, without the need for other external forces. Compared with the prior art's fixing method of mechanically pressing the display panel 10 with a first limiting member, in this embodiment, when the display panel 10 is fixed to the cover 20, it is only subjected to the adhesive force provided by the adhesive layer 30, reducing or even avoiding uneven local stress or excessive pressure caused by mechanical pressing, thereby reducing the possibility of screen yellowing due to deformation of the display panel 10 under stress.

[0027] The bracket 40 is located on the side of the backlight surface C2 of the display panel 10 away from the light-emitting surface. The bracket 40 is detachably connected to the cover 20, and there is a gap between the bracket 40 and the display panel 10.

[0028] Understandably, the bracket 40 is not directly and fixedly connected to the display panel 10, but is detachably connected to the cover 20. A receiving area is formed between the bracket 40 and the cover 20, and the display panel 10 is located within this receiving area. A gap is left between the bracket 40 and the display panel 10, ensuring that the bracket 40 remains separated from the backlight surface C2 of the display panel 10 in the assembled state, and the bracket 40 and the display panel 10 do not contact each other. Therefore, the backlight surface C2 side of the display panel 10 is suspended, and the display panel 10 does not bear any force from the bracket 40.

[0029] In summary, in the head-up display device 100 provided in this embodiment, the light-emitting surface of the display panel 10 is not directly contacted and fixedly connected to the cover 20, but is fixedly connected to the cover 20 through an adhesive layer 30. Similarly, on the backlight surface C2 side, the display panel 10 is not directly contacted and fixedly connected to the support member 40, but is detachably connected to the cover 20, forming a receiving area between the support member 40 and the cover 20, with the display panel 10 located within this receiving area. Therefore, in the assembled state, the support member 40 maintains a distance from the backlight surface C2 of the display panel 10, and the support member 40 and the display panel 10 do not contact each other. The backlight surface C2 side of the display panel 10 is in a suspended state, and the display panel 10 does not bear any force from the support member 40. It is evident that, apart from being subjected to the adhesive force of the adhesive layer 30, the display panel 10 can effectively improve the problem of screen yellowing caused by external pressure in the prior art.

[0030] Figure 6 This is an assembly structure diagram of a cover and a display panel provided in an embodiment of the present disclosure. Figure 7 This is a schematic diagram of the structure of a cover provided in an embodiment of this disclosure. Figure 7 To clearly illustrate the structure and location of the limiting rib 22, the entire structure of the cover 20 is not depicted.

[0031] Combination Figure 6 and Figure 7 As shown, in some embodiments, the cover 20 further includes at least three limiting ribs 22, which are located on the base plate 21. The at least three limiting ribs 22 are arranged sequentially along the circumference of the opening area K, and the limiting ribs 22 are located on the side of the adhesive layer 30 away from the opening area K. The limiting ribs 22 engage with the side of the display panel 10 to fix the display panel 10.

[0032] Understandably, by sequentially arranging at least three limiting ribs 22 along the circumference of the opening area K on the base plate 21, the at least three limiting ribs 22 together surround a receiving area, and the display panel 10 is confined within this receiving area. Furthermore, the limiting ribs 22 are located on the side of the adhesive layer 30 away from the opening area K, so that the limiting ribs 22 are located on the periphery of the display panel 10, ensuring that the limiting ribs 22 can engage with the side of the display panel 10, while also facilitating full adhesion between the adhesive layer 30 and the display panel 10, thereby improving the stability of the fixed connection between the display panel 10 and the cover 20.

[0033] Based on this, when the display panel 10 tends to shift horizontally under vibration or impact, the limiting rib 22 can limit the display panel 10, preventing it from shifting or shaking, thereby improving the structural reliability of the head-up display device 100. Furthermore, since the limiting rib 22 and the side of the display panel 10 are only in a snap-fit ​​relationship, the limiting rib 22 does not exert any horizontal force on the display panel 10 in the assembled state, nor does it exert any Z-direction clamping force on the display panel 10. Therefore, the setting of the limiting rib 22 does not affect the zero-pressure fixation of the display panel 10, effectively improving the problem of screen yellowing caused by external pressure.

[0034] In some examples, the cover 20 also includes three limiting ribs 22, which are arranged sequentially along the circumference of the opening area K.

[0035] For example, one limiting rib 22 corresponds to one side of the display panel 10. When there are three limiting ribs 22, the three limiting ribs 22 are arranged sequentially along the circumference of the opening area K and are respectively disposed on the outer side of three different sides of the display panel 10.

[0036] It is understandable that the display panel 10 is usually quadrilateral, and three limiting ribs 22 are arranged sequentially along the circumference of the opening area K, which can engage and limit the side of the display panel 10 from at least three directions, thereby reducing the number of limiting ribs 22 and simplifying the structure of the cover 20 while ensuring the assembly stability of the display panel 10.

[0037] However, the number of limiting ribs 22 is not limited to this in the embodiments of this disclosure. For example, the number of limiting ribs 22 can also be four.

[0038] In some examples, the cover 20 also includes at least three limiting ribs 22 located on the base plate 21. The at least three limiting ribs 22 are arranged sequentially along the circumference of the opening area K, and there is a gap between adjacent limiting ribs 22.

[0039] This configuration provides clearance for the installation of the display panel 10 by creating gaps between adjacent limiting ribs 22, facilitating the placement and assembly of the display panel 10. Furthermore, the gaps correspond to the corners of the display panel 10, ensuring that the corners of the display panel 10 will not come into contact with or collide with the limiting ribs 22 during assembly and use, thus preventing damage to the corners of the display panel 10 due to impact. In addition, at least three limiting ribs 22 are sequentially arranged along the circumference of the opening area K, providing side restraint for the display panel 10 from multiple directions, while still ensuring the stability requirements of the head-up display device 100 for the display panel 10 are met.

[0040] In some examples, the limiting ribs 22 on the cover 20 and the base plate 21 are integrally formed.

[0041] With this configuration, no additional connection structure is needed between the limiting rib 22 and the base plate 21, which simplifies the manufacturing process of the cover 20, improves the structural strength of the cover 20, and helps to improve the reliability of the limiting rib 22 in limiting the display panel 10.

[0042] Figure 8 for Figure 4 A magnified view of a portion of Q.

[0043] Combination Figure 4 , Figure 5 and Figure 8 As shown, in some embodiments, along the third direction Z, the thickness of the limiting rib 22 is greater than or equal to the sum of the thicknesses of the adhesive layer 30 and the display panel 10.

[0044] Based on this, by setting the thickness of the limiting rib 22 to be greater than or equal to the sum of the thicknesses of the adhesive layer 30 and the display panel 10, the limiting rib 22 forms a sufficient limiting height in the third direction Z, improving the engagement reliability between the limiting rib 22 and the side of the display panel 10, thereby enhancing the stability of horizontal limiting. Simultaneously, the limiting rib 22 houses the display panel 10 within its enclosed space, maintaining a gap between the backlight surface C2 of the display panel 10 and the subsequently assembled support member 40, reducing the risk of contact between the display panel 10 and the support member 40, and preventing the display panel 10 from bearing pressure from the support member 40. This effectively improves the problem of screen yellowing caused by external pressure.

[0045] Combination Figure 6 and Figure 7 As shown, in some embodiments, the adhesive layer 30 includes at least one of optical adhesive or thermally conductive adhesive.

[0046] In some examples, the adhesive layer 30 includes optically clear adhesive (OCA). Optical adhesive has high adhesive strength and can reliably bond the display panel 10 to the cover 20, thereby improving the structural reliability of the head-up display device 100.

[0047] In some examples, the adhesive layer 30 includes a thermally conductive adhesive. This thermally conductive adhesive not only provides bonding and fixation but also exhibits excellent thermal conductivity, effectively transferring the heat generated by the display panel 10 during operation to the cover 20, thereby reducing the operating temperature of the display panel 10 and improving heat dissipation efficiency.

[0048] In some examples, adhesive layer 30 contains both optical adhesive and thermally conductive adhesive.

[0049] With this configuration, the adhesive layer 30 can combine the high adhesive strength of optical adhesive with the high thermal conductivity of thermal adhesive, thereby improving the heat dissipation performance of the head-up display device 100 while meeting the bonding and fixing requirements between the display panel 10 and the cover 20, which is conducive to improving the working stability and service life of the display panel 10.

[0050] Combination Figures 6-8 As shown, in some embodiments, the adhesive layer 30 includes a first adhesive portion 31, a second adhesive portion 32, a third adhesive portion 33 and a fourth adhesive portion 34 sequentially disposed along the circumferential direction of the opening region K.

[0051] Based on this, by setting the adhesive layer 30 as four adhesive portions arranged sequentially along the circumference of the opening area K, the adhesive layer 30 forms a segmented adhesive structure in the circumference of the opening area K. This segmented adhesive structure facilitates the disassembly of the adhesive layer 30 into multiple independent adhesive portions for separate installation, reducing the area and difficulty of a single coating and improving assembly efficiency. Furthermore, the display panel 10 is typically quadrilateral, and the circumference of the opening area K includes four sequentially connected sides. The first adhesive portion 31, the second adhesive portion 32, the third adhesive portion 33, and the fourth adhesive portion 34 are respectively arranged sequentially along the four sides of the opening area K, ensuring that the adhesive layer 30 has adhesive portions on all four sides of the opening area K, which is beneficial for achieving reliable bonding of the display panel 10 to the cover 20 around its entire circumference. In addition, the segmented adhesive structure allows for the selection of different adhesive materials according to the different performance requirements of each segment, enabling the adhesive layer 30 to meet multiple performance requirements as a whole.

[0052] In some examples, the thicknesses of the first adhesive portion 31, the second adhesive portion 32, the third adhesive portion 33, and the fourth adhesive portion 34 are equal along the third direction Z.

[0053] With this configuration, the top surfaces of the first adhesive part 31, the second adhesive part 32, the third adhesive part 33, and the fourth adhesive part 34 are flush in the third direction Z, forming a flat support surface together, which helps to improve the installation flatness of the display panel 10.

[0054] In some examples, two of the first adhesive portion 31, the second adhesive portion 32, the third adhesive portion 33, and the fourth adhesive portion 34 may include optical adhesive, and the other two may include thermally conductive adhesive.

[0055] With this configuration, the optical adhesive and thermally conductive adhesive are used together in the circumferential direction of the opening area K, so that the adhesive layer 30 can take into account both the adhesive performance and the heat dissipation performance as a whole.

[0056] For example, the first adhesive portion 31 and the third adhesive portion 33 include optical adhesive, and the second adhesive portion 32 and the fourth adhesive portion 34 include thermally conductive adhesive.

[0057] With this arrangement, the optical adhesive and thermally conductive adhesive are staggered along the circumference of the opening area K, so that the adhesive layer 30 is evenly distributed with optical adhesive and thermally conductive adhesive in the circumference of the opening area K. This is beneficial to achieve reliable bonding between the display panel 10 and the cover 20 around the entire circumference, while also dissipating the heat generated by the display panel 10 during operation, thereby improving the working stability and service life of the display panel 10.

[0058] Combination Figures 6-8 As shown, in some embodiments, the cover 20 further includes a flange group U, which includes a first flange 23 and a second flange 24 extending along a first direction X and arranged in a second direction Y. The first flange 23 and the second flange 24 are located on the same side of the base plate 21, and a limiting groove is formed between the first flange 23, the base plate 21 and the second flange 24, with at least a portion of the thermally conductive adhesive located in the limiting groove.

[0059] Here, the first direction X is the direction from the peripheral region F to the opening region K. The first direction X intersects with the second direction Y, and both the first direction X and the second direction Y intersect with the third direction Z. For example, the first direction X, the second direction Y, and the third direction Z are all perpendicular to each other.

[0060] Based on this, by providing a first protruding edge 23 and a second protruding edge 24 on the base plate 21 of the cover 20, the first protruding edge 23, the base plate 21, and the second protruding edge 24 form a limiting groove, in which at least a portion of the thermally conductive adhesive is contained. Thus, the limiting groove can limit the thermally conductive adhesive, reducing the risk of overflow during coating or curing and improving the molding accuracy of the thermally conductive adhesive.

[0061] In some examples, the cover 20 includes two convex rims U disposed on both sides of the opening area K.

[0062] As shown in the above structure, when the adhesive layer 30 is provided, the second adhesive portion 32 and the fourth adhesive portion 34 include thermally conductive adhesive. The thermally conductive adhesive is usually in liquid or paste form during application and has a certain degree of fluidity. Based on this, the second adhesive portion 32 can be correspondingly disposed in the limiting groove of one of the convex edge groups U, and the fourth adhesive portion 34 can be correspondingly disposed in the limiting groove of the other convex edge group U. This allows the limiting groove to block and limit the thermally conductive adhesive using the first convex edge 23 and the second convex edge 24, reducing the risk of the thermally conductive adhesive overflowing due to its fluidity during application or curing, and improving the molding accuracy of the thermally conductive adhesive.

[0063] It should be noted that when the adhesive layer 30 only includes thermally conductive adhesive, that is, when the first adhesive portion 31, the second adhesive portion 32, the third adhesive portion 33, and the fourth adhesive portion 34 all include thermally conductive adhesive, four raised edge groups U can be provided on the cover 20, arranged sequentially along the circumference of the opening area K. The four raised edge groups U are respectively provided for the first adhesive portion 31, the second adhesive portion 32, the third adhesive portion 33, and the fourth adhesive portion 34, so that the thermally conductive adhesive in the first adhesive portion 31, the second adhesive portion 32, the third adhesive portion 33, and the fourth adhesive portion 34 is respectively accommodated in the limiting groove of the corresponding raised edge group U, thereby limiting the thermally conductive adhesive in the four adhesive portions, reducing the risk of overflow of the thermally conductive adhesive due to fluidity during the coating or curing process, and improving the molding accuracy of the thermally conductive adhesive. However, the number of raised edge groups U in the cover 20 is not limited to this in the embodiments of this disclosure, and can be set according to the actual situation.

[0064] In some examples, the flange assembly U in the cover 20 is integrally formed with the base plate 21. That is, the first flange 23, the base plate 21, and the second flange 24 are integrally formed.

[0065] This design eliminates the need for additional connecting structures between the first protruding edge 23, the base plate 21, and the second protruding edge 24, simplifying the manufacturing process of the cover 20, reducing the number of parts, and lowering assembly costs. Simultaneously, the one-piece molding structure provides high structural strength between the first protruding edge 23, the base plate 21, and the second protruding edge 24, which helps improve the reliability of the limiting groove in limiting the thermally conductive adhesive.

[0066] In some examples, the convex edge group U is located within the area enclosed by multiple limiting ribs 22, that is, the convex edge group U is located on the side of the limiting rib 22 closer to the opening area K.

[0067] With this configuration, the raised edge group U is located within the area covered by the display panel 10. Even if the thermally conductive adhesive in the adhesive layer 30 overflows in the limiting groove, the overflowing thermally conductive adhesive is blocked below the display panel 10 and is not visible from the outside of the display panel 10. This helps to prevent the thermally conductive adhesive from overflowing and affecting the appearance of the head-up display device 100.

[0068] In some examples, there is a gap between the first protruding edge 23 and the two limiting ribs 22 arranged along the first direction X and extending along the second direction Y.

[0069] With this configuration, the thermally conductive adhesive can overflow from the gap between the first protrusion 23 and the limiting rib 22, causing the thermally conductive adhesive to overflow in a direction away from the display panel 10, which helps to prevent the thermally conductive adhesive from overflowing and affecting the appearance of the head-up display device 100.

[0070] In some examples, along the second direction Y, the first protruding edge 23 is located on the side of the second protruding edge 24 away from the opening area K; that is, the first protruding edge 23 is located on the side away from the display panel 10 relative to the second protruding edge 24. Furthermore, along the first direction X, the length of the first protruding edge 23 can be less than the length of the second protruding edge 24.

[0071] With this configuration, the blocking area defined by the first protruding edge 23 along the first direction X is smaller than the blocking area defined by the second protruding edge 24 along the first direction X. When the thermally conductive adhesive is placed in the limiting groove, if the thermally conductive adhesive overflows, due to the larger blocking area of ​​the second protruding edge 24, the thermally conductive adhesive is less likely to overflow towards the display panel 10. Instead, it can extend appropriately beyond the first protruding edge 23 in a direction away from the opening area K, thereby ensuring that the thermally conductive adhesive overflows directionally towards the side away from the display panel 10. At the same time, the extension of the thermally conductive adhesive in the direction away from the opening area K increases the heat dissipation area of ​​the thermally conductive adhesive, which is beneficial to improving heat dissipation efficiency.

[0072] Alternatively, in other examples, the length of the first protrusion 23 is greater than the length of the second protrusion 24 in the first direction X. In this case, the two ends of the second protrusion 24 abut against the first adhesive portion 31 and the third adhesive portion 33, respectively, in the first direction X.

[0073] Thus, the second protruding edge 24, the first adhesive portion 31, and the third adhesive portion 33 form a continuous shielding structure. This shielding structure prevents the thermally conductive adhesive from overflowing onto the display panel 10, thus preventing it from affecting the display effect of the display panel 10. Simultaneously, due to the gap between the first protruding edge 23 and the limiting rib 22, the thermally conductive adhesive flows directionally from the gap away from the display panel 10. The shielding structure, combined with the directional overflow, ensures that the thermally conductive adhesive can only extend in a direction away from the opening area K, further preventing the thermally conductive adhesive from affecting the display effect of the display panel 10.

[0074] Combination Figures 6-8 As shown, in some embodiments, along the third direction Z, the thickness of the first convex edge 23 is equal to the thickness of the thermally conductive adhesive.

[0075] Based on this, the top surface of the first protrusion 23 in the third direction Z is flush with the top surface of the thermally conductive adhesive in the third direction Z, and the two together form a flat support surface, which helps to improve the installation flatness of the display panel 10. At the same time, since the thickness of the first protrusion 23 is equal to the thickness of the thermally conductive adhesive, the first protrusion 23 will not protrude from the thermally conductive adhesive in the third direction Z, preventing the first protrusion 23 from exerting additional pressure on the display panel 10, which helps to prevent the display panel 10 from yellowing due to pressure.

[0076] Combination Figures 6-8 As shown, in some embodiments, along the third direction Z, the thickness of the first convex edge 23 is less than the thickness of the limiting rib 22.

[0077] It is understandable that, along the third direction Z, the thickness of the first protruding edge 23 is equal to the thickness of the thermally conductive adhesive, the thickness of the adhesive layer 30 is the same as the thickness of the thermally conductive adhesive, and the thickness of the limiting rib 22 is greater than or equal to the sum of the thicknesses of the adhesive layer 30 and the display panel 10. Therefore, the thickness of the limiting rib 22 must be greater than the thickness of the first protruding edge 23.

[0078] With this configuration, the thickness difference between the limiting rib 22 and the first protruding edge 23 is used to accommodate the display panel 10, so that the limiting rib 22 can limit the side of the display panel 10. At the same time, the first protruding edge 23 only supports the display panel 10 together with the thermally conductive adhesive, and will not exert additional pressure on the display panel 10, which helps to prevent the display panel 10 from yellowing due to pressure.

[0079] Combination Figures 6-8 As shown, in some embodiments, along the third direction Z, the thickness of the second convex edge 24 is equal to the thickness of the thermally conductive adhesive.

[0080] Based on this, the top surface of the second protrusion 24 in the third direction Z is flush with the top surface of the thermally conductive adhesive in the third direction Z, and the two together form a flat support surface, which helps to improve the installation flatness of the display panel 10. At the same time, since the thickness of the second protrusion 24 is equal to the thickness of the thermally conductive adhesive, the second protrusion 24 will not protrude from the thermally conductive adhesive in the third direction Z, preventing the second protrusion 24 from exerting additional pressure on the display panel 10, which helps to prevent the display panel 10 from yellowing due to pressure.

[0081] Combination Figures 6-8 As shown, in some embodiments, along the third direction Z, the thickness of the second convex edge 24 is less than the thickness of the limiting rib 22.

[0082] It is understandable that, along the third direction Z, the thickness of the second protruding edge 24 is equal to the thickness of the thermally conductive adhesive, the thickness of the adhesive layer 30 is the same as the thickness of the thermally conductive adhesive, and the thickness of the limiting rib 22 is greater than or equal to the sum of the thicknesses of the adhesive layer 30 and the display panel 10. Therefore, the thickness of the limiting rib 22 must be greater than the thickness of the second protruding edge 24.

[0083] With this configuration, the thickness difference between the limiting rib 22 and the second protruding edge 24 is used to accommodate the display panel 10, so that the limiting rib 22 can limit the side of the display panel 10. At the same time, the second protruding edge 24 only supports the display panel 10 together with the thermally conductive adhesive, and will not exert additional pressure on the display panel 10, which helps to prevent the display panel 10 from yellowing due to pressure.

[0084] Combination Figures 6-8 As shown, in some embodiments, along the third direction Z, the thickness of the first convex edge 23 and the thickness of the second convex edge 24 are equal to the thickness of the thermally conductive adhesive.

[0085] With this configuration, the top surfaces of the first protruding edge 23, the second protruding edge 24, and the thermally conductive adhesive in the third direction Z are flush, forming a flat support surface, which helps improve the flatness of the display panel 10 during installation. Simultaneously, neither the first protruding edge 23 nor the second protruding edge 24 protrudes beyond the thermally conductive adhesive in the third direction Z, preventing additional pressure on the display panel 10 and thus helping to prevent yellowing of the display panel 10 due to pressure.

[0086] like Figures 5-7 As shown, in some embodiments, the cover 20 further includes a first hollow body 25. Along the third direction Z, the first hollow body 25 has a first opening 25A and a second opening 25B at its two ends. The side surface S of the first hollow body 25 near the first opening 25A includes a first mounting block M, which includes a first mounting hole M1. The base plate 21 is located at the first opening 25A and is fixedly connected to the side surface S of the first hollow body 25.

[0087] The bracket 40 includes a mounting plate 41, the mounting plate 41 includes a second mounting block N, and the second mounting block N includes a second mounting hole N1.

[0088] The head-up display device 100 also includes fasteners (not shown in the figure) that mate with both the first mounting hole M1 and the second mounting hole N1, and the bracket 40 and the cover 20 are detachably connected by the fasteners.

[0089] This configuration allows for a detachable connection between the cover 20 and the support 40, facilitating the assembly, disassembly, and maintenance of the head-up display device 100. Simultaneously, the first mounting block M is positioned on the side S of the first hollow body 25, and the second mounting block N on the mounting plate 41 corresponds to the first mounting block M. Fasteners pass through the first mounting hole M1 and the second mounting hole N1, resulting in a simple connection structure that improves assembly efficiency.

[0090] In some examples, the fastener can be a screw, and the first mounting hole M1 and the second mounting hole N1 can be screw holes.

[0091] This design simplifies the screw and screw hole fit, facilitating a detachable connection between the bracket 40 and the cover 20, thus improving the ease of assembly, disassembly, and maintenance. Simultaneously, the screw connection offers good reliability, ensuring the stability of the connection between the bracket 40 and the cover 20.

[0092] like Figure 7As shown, in some embodiments, the first hollow body 25 and the base plate 21 are integrally formed.

[0093] This design eliminates the need for additional connecting structures between the first hollow body 25 and the base plate 21, simplifying the assembly process of the cover 20 and improving production efficiency. Simultaneously, the one-piece molding structure avoids connection gaps between the first hollow body 25 and the base plate 21, thus enhancing the overall structural strength of the cover 20.

[0094] like Figure 4 and Figure 7 As shown, in some embodiments, the second mounting block N protrudes toward the side of the cover 20.

[0095] Based on this, by setting the second mounting block N to protrude towards the cover 20, the bracket 40 connects with the first mounting block M of the cover 20 through the protruding second mounting block N, thereby increasing the distance between the mounting plate 41 of the bracket 40 and the cover 20, thus expanding the gap between the bracket 40 and the display panel 10, reducing the probability of the bracket 40 and the display panel 10 coming into contact during assembly, and helping to prevent the display panel 10 from yellowing due to pressure.

[0096] like Figures 5-7 As shown, in some embodiments, the cover 20 further includes heat dissipation fins 26, which may be located on the side S of the first hollow body 25.

[0097] With this configuration, the heat dissipation fins 26 increase the contact area between the cover 20 and the outside air, which helps to quickly dissipate the heat of the head-up display device 100 to the outside environment and improve the heat dissipation efficiency of the head-up display device 100.

[0098] In some examples, the heat dissipation fins 26 may be located on at least two sides S of the first hollow body 25.

[0099] With this configuration, the heat dissipation fins 26 are distributed on at least two sides S, which further increases the heat dissipation area compared to only being set on a single side S, thus improving heat dissipation efficiency.

[0100] In some examples, the heat dissipation fins may be located on two sides of the first hollow body 25.

[0101] With this configuration, the heat dissipation fins 26 are concentrated on the two sides S, which increases the heat dissipation area and simplifies the structural complexity of the cover 20, making it easier to process and shape.

[0102] In some examples, the heat dissipation fins may be located on two oppositely arranged sides of the first hollow body 25.

[0103] With this configuration, the heat dissipation fins 26 are distributed on two oppositely positioned sides S, and the heat dissipation structures on both sides are symmetrically distributed, allowing heat to be dissipated synchronously in two opposite directions, thus accelerating the overall heat dissipation speed.

[0104] For example, the first hollow body 25 also includes a frame forming the first opening 25A, the frame including a first side, a second side, a third side, and a fourth side connected in sequence. The heat dissipation fins 26 can be disposed on the side having the second side and the fourth side.

[0105] With this configuration, the heat sink fins 26 are located close to the thermally conductive adhesive. The heat generated by the thermally conductive adhesive can be transferred to the heat sink fins 26 through a shorter conduction path, which helps to improve heat transfer efficiency and further enhance the heat dissipation effect.

[0106] In some examples, heat dissipation fins 26 may be located on each side of the first hollow body 25.

[0107] With this configuration, the heat dissipation fins 26 cover the entire side surface S of the first hollow body 25, maximizing the heat dissipation area and facilitating efficient heat dissipation of the head-up display device 100.

[0108] like Figures 5-7 As shown, in some embodiments, the heat dissipation fins 26 and the first hollow body 25 are an integral structure.

[0109] This design eliminates the need for additional connecting structures between the heat dissipation fins 26 and the first hollow body 25, simplifying the assembly process of the cover 20 and improving production efficiency. Simultaneously, the integrated structure avoids gaps between the heat dissipation fins 26 and the first hollow body 25, improving the heat transfer efficiency from the first hollow body 25 to the heat dissipation fins 26 and further enhancing the heat dissipation effect.

[0110] like Figures 5-7 As shown, in some embodiments, the cover 20 is made of metal.

[0111] With this design, the cover 20 is made entirely of metal. Metal has excellent thermal conductivity, which helps to quickly conduct heat from the head-up display device 100 to the external environment, improving heat dissipation efficiency. At the same time, metal has high structural strength, which helps to improve the overall structural stability of the cover 20.

[0112] Some embodiments of this disclosure provide a vehicle. Figure 9 This is a schematic diagram of a vehicle structure provided for an embodiment of the present disclosure.

[0113] like Figure 9As shown, vehicle 200 includes the head-up display device 100 provided in any of the above embodiments. Therefore, the vehicle provided in this disclosure has all the beneficial effects of the head-up display device 100 provided in any of the above embodiments, which will not be elaborated here.

[0114] In some examples, vehicle 200 may include a viewing window, which is at least one of a windshield, a side window, or a sunroof.

[0115] In order to achieve a good imaging position, the head-up display 100 is installed on the vehicle's dashboard, so that the head-up display 100 can project the target onto the viewing window, so that the user can see the vehicle information without moving the viewing angle.

[0116] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0117] The above description is merely a specific embodiment of this disclosure, enabling those skilled in the art to understand or implement it. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of this disclosure. Therefore, this disclosure is not to be limited to the embodiments described herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A head-up display device, characterized in that, include: The display panel includes a light-emitting surface and a backlight surface; A cover is located on the side of the light-emitting surface away from the backlight surface; the cover includes a base plate having an opening area and a peripheral area surrounding the opening area; Along the thickness direction of the display panel, the peripheral area has a first overlapping area with the display panel, and the opening area exposes a portion of the display panel; An adhesive layer is located between the cover and the display panel, and the adhesive layer is located within the first overlapping area and is disposed circumferentially along the opening area. The adhesive layer is used to fix the cover and the display panel together. A support component is located on the side of the backlight surface away from the light-emitting surface. The support component is detachably connected to the cover, and there is a gap between the support component and the display panel.

2. The head-up display device according to claim 1, characterized in that, The cover also includes: At least three limiting ribs are located on the base plate and are arranged sequentially along the circumference of the opening area. The limiting ribs are located on the side of the adhesive layer away from the opening area. The limiting ribs engage with the side of the display panel to fix the display panel.

3. The head-up display device according to claim 2, characterized in that, The thickness of the limiting rib is greater than or equal to the sum of the thicknesses of the adhesive layer and the display panel.

4. The head-up display device according to claim 1, characterized in that, The adhesive layer includes at least one of optical adhesive or thermally conductive adhesive.

5. The head-up display device according to claim 1, characterized in that, The adhesive layer includes a first adhesive portion, a second adhesive portion, a third adhesive portion, and a fourth adhesive portion arranged sequentially along the circumference of the opening area; wherein the first adhesive portion and the third adhesive portion include optical adhesive, and the second adhesive portion and the fourth adhesive portion include thermally conductive adhesive.

6. The head-up display device according to claim 4 or 5, characterized in that, The cover also includes: A first protruding edge and a second protruding edge extending in a first direction and arranged in a second direction, the first protruding edge and the second protruding edge being located on the same side of the base plate, a limiting groove being formed between the first protruding edge, the base plate and the second protruding edge, and at least a portion of the thermally conductive adhesive being located within the limiting groove; Wherein, the first direction is the direction from the peripheral area to the opening area, and the first direction intersects with the second direction.

7. The head-up display device according to claim 6, characterized in that, The thickness of the first protrusion is equal to the thickness of the thermally conductive adhesive, and / or the thickness of the second protrusion is equal to the thickness of the thermally conductive adhesive.

8. The head-up display device according to claim 1, characterized in that, The cover also includes a first hollow body with a first opening and a second opening at both ends, and the side of the first hollow body includes a first mounting block, the first mounting block including a first mounting hole; the base plate is located at the first opening and is fixedly connected to the side of the first hollow body. The bracket includes a mounting plate, the mounting plate includes a second mounting block, and the second mounting block includes a second mounting hole; The head-up display device also includes fasteners that mate with both the first mounting hole and the second mounting hole, and the bracket and the cover are detachably connected by the fasteners.

9. The head-up display device according to claim 8, characterized in that, The second mounting block protrudes toward the side of the cover.

10. The head-up display device according to claim 8, characterized in that, The cover also includes heat dissipation fins located on at least two sides of the first hollow body.

11. The head-up display device according to claim 1, characterized in that, The cover is made of metal.

12. A vehicle, characterized in that, The vehicle includes a head-up display device as described in any one of claims 1-11.

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