Automobile head-up display device and automobile

Abstract

The utility model relates to the technical field of vehicle-mounted display, in particular to an automobile head-up display device and an automobile. The automobile head-up display device comprises a metal shell, a projection module, a metal fin and a metal grounding piece, the projection module is contained in the metal shell and comprises a first printed circuit board and a second printed circuit board, and the first printed circuit board and the second printed circuit board are arranged on the two sides of the projection module. Preset gaps are respectively formed between the metal shell and the metal shell; the metal fin is connected with the first printed circuit board through a first metal fastener, and the metal fin is electrically connected with the metal shell; the metal grounding piece is connected with the metal shell through a second metal fastener, and the metal grounding piece is electrically connected with the second printed circuit board. Damage of the projection module caused by gathering of electrostatic energy of the first printed circuit board and the second printed circuit board can be prevented, and normal operation of the automobile head-up display device is ensured.

Description

Technical Field

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

[0002] With the increasing popularity and rapid development of new energy vehicles, the application of in-vehicle projection technology is becoming increasingly widespread, with more and more manufacturers replacing traditional instrument clusters with head-up displays (HUDs). Projection modules are a key component of HUDs, utilizing a variety of optical technologies to project important vehicle information. This not only enhances driving convenience and safety, but also significantly improves driving safety by reducing the driver's gaze from the road ahead. During the production, installation, transportation, and operation of projection modules, static electricity can interfere with their operation, potentially affecting their performance or even damaging their components. Damage to the projection module while driving can significantly impact safe driving.

[0003] Currently, conventional anti-static measures for automotive head-up displays (HUDs) primarily involve adding anti-static devices to the projection module's PCB circuit ports. However, this approach requires redesigning and expanding the existing PCB board area and adding anti-static devices to each signal line. Because projection modules are mature, this approach not only requires significant circuit structure changes and high costs, but also hinders PCB installation due to the increased PCB area. Utility Model Content

[0004] In view of this, it is necessary to provide a car head-up display device and a car that can solve the above technical problems.

[0005] To solve the above technical problems, this application provides the following technical solutions:

[0006] A head-up display device for an automobile, the head-up display device for an automobile comprising:

[0007] Metal casing;

[0008] a projection module housed in the metal housing, the projection module comprising a first printed circuit board and a second printed circuit board, the first printed circuit board and the second printed circuit board being arranged on both sides of the projection module and forming a preset gap with the metal housing respectively;

[0009] The metal fin is connected to the first printed circuit board by a first metal fastener, and the metal fin is electrically connected to the metal housing;

[0010] The metal grounding plate is connected to the metal housing by a second metal fastener, and the metal grounding plate is electrically connected to the second printed circuit board.

[0011] It can be understood that by adding a first metal fastener and a metal fin, a second metal fastener and a metal grounding plate, the first printed circuit board and the second printed circuit board can be electrically connected to the metal casing respectively, so that the electrostatic energy coupled to the first printed circuit board and the second printed circuit board can be discharged through the metal casing. On the one hand, this can prevent the first printed circuit board and the second printed circuit board from being damaged by the accumulation of electrostatic energy, thereby ensuring the normal operation of the car head-up display device. On the other hand, the projection module can be improved on the basis of the original structure, which has the effect of reducing costs.

[0012] In one embodiment, a spacer is provided between the metal fin and the metal shell, and the spacer is in contact with the metal fin and the metal shell respectively, so that the metal fin can be electrically connected to the metal shell through the spacer.

[0013] It can be understood that the metal fins are electrically connected to the metal shell through the spacer, so that the electrostatic energy coupled to the first printed circuit board can be discharged through the metal fins, the spacer and the metal shell in sequence. This can prevent the electrostatic energy accumulated on the first printed circuit board and the metal fins from being discharged through the air breakdown of the metal shell, thereby preventing damage to the first printed circuit board and ensuring the normal operation of the projection module.

[0014] In one embodiment, the metal fin is thermally connected to the metal shell through the spacer.

[0015] It can be understood that the metal fins are thermally connected to the metal shell through the spacer, so that the heat generated by the first printed circuit board during operation can be conducted to the metal shell through the first metal fastener, the metal fins and the spacer, and the metal shell is used to dissipate heat from the first printed circuit board. This can improve the heat dissipation efficiency of the first printed circuit board, thereby ensuring the normal operation of the automobile head-up display device.

[0016] In one embodiment, a first heat-conducting insulating layer is provided between the first printed circuit board and the metal fins, and the first heat-conducting insulating layer is thermally connected to the first printed circuit board and the metal fins respectively.

[0017] It is understandable that, through the above-mentioned structural arrangement, the metal fins can be used to dissipate heat from the first printed circuit board, which can further improve the heat dissipation efficiency when dissipating heat from the first printed circuit board.

[0018] In one embodiment, the first metal fastener passes through the metal fin arrangement and is screwed to the first printed circuit board.

[0019] It is understandable that the metal fin is connected to the first printed circuit board in a screw connection manner, which facilitates the assembly of the metal fin on the first printed circuit board.

[0020] In one embodiment, the metal grounding plate includes a contact spring, which is overlapped on the second printed circuit board and electrically connects the metal grounding plate to the second printed circuit board.

[0021] It can be understood that the metal grounding plate is electrically connected to the second printed circuit board via the contact spring, which facilitates the electrical connection between the metal grounding plate and the second printed circuit board. At the same time, the structural characteristics of the contact spring can be utilized to improve the stability of the electrical connection between the contact spring and the second printed circuit board when the second metal fastener is used to connect the metal grounding plate to the metal housing and electrically connect them.

[0022] In one embodiment, the number of the second printed circuit boards is multiple, and the multiple second printed circuit boards are independently arranged;

[0023] There are also multiple contact springs, each of which corresponds to each of the second printed circuit boards. Furthermore, each contact spring is overlapped with the corresponding second printed circuit boards.

[0024] It is understandable that, through the above-mentioned structural arrangement, a single metal grounding plate can be used to simultaneously connect to a plurality of second printed circuit boards at different positions, thus simplifying the structure.

[0025] In one embodiment, the second metal fastener passes through the metal grounding plate and is screwed to the metal housing.

[0026] It is understandable that the metal grounding plate is connected to the metal housing in a screw connection manner, which facilitates the assembly of the metal grounding plate on the metal housing.

[0027] In one embodiment, a second heat-conducting insulating layer is provided between the second printed circuit board and the metal shell, and the second heat-conducting insulating layer is thermally connected to the second printed circuit board and the metal shell respectively.

[0028] It is understandable that, through the above-mentioned structural arrangement, the metal housing can be used to dissipate heat from the second printed circuit board, thereby improving the heat dissipation efficiency of the second printed circuit board.

[0029] This application also seeks protection for a vehicle head-up display device including the above-mentioned one.

[0030] Due to the application of the above solution, this application has the following advantages compared to the prior art:

[0031] The automobile head-up display device and automobile for which protection is sought in this application, by adding a first metal fastener and a metal fin, a second metal fastener and a metal grounding plate, can realize electrical connection between the first printed circuit board and the second printed circuit board and the metal casing respectively, so that the electrostatic energy coupled to the first printed circuit board and the second printed circuit board can be discharged through the metal casing. This can, on the one hand, prevent the first printed circuit board and the second printed circuit board from being damaged by the accumulation of electrostatic energy, thereby ensuring the normal operation of the automobile head-up display device. On the other hand, the projection module can be improved on the basis of the original structure, which has the effect of reducing costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the conventional technology, the following briefly introduces the drawings required for use in the embodiments or the conventional technology descriptions. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0033] Figure 1 This is a schematic structural diagram of a vehicle head-up display device provided in one embodiment of the present application.

[0034] Figure 2 A cross-sectional view of a vehicle head-up display device provided in one embodiment of the present application.

[0035] Figure 3 This is a schematic structural diagram of a metal grounding plate provided in one embodiment of the present application.

[0036] Figure 4 This is a schematic structural diagram of a spacer provided in one embodiment of the present application.

[0037] Figure numerals: 100, automobile head-up display device; 10, metal housing; 20, projection module; 21, first printed circuit board; 22, second printed circuit board; 30, metal fin; 40, metal grounding plate; 41, contact spring; 42, through hole; 50, first metal fastener; 60, second metal fastener; 80, spacer; 81, conductive part; 82, heat-conducting part; 90, second heat-conducting insulation layer. DETAILED DESCRIPTION

[0038] To make the above-mentioned objects, features, and advantages of the present application more clearly understood, the specific embodiments of the present application are described in detail below with reference to the accompanying drawings. The following description sets forth many specific details to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways than those described herein, and those skilled in the art can make similar improvements without violating the scope of the present application. Therefore, the present application is not limited to the specific embodiments disclosed below.

[0039] It should be noted that when a component is referred to as being "fixed to" or "disposed on" another component, it may be directly on the other component or there may be a central component. When a component is considered to be "connected to" another component, it may be directly connected to the other component or there may be a central component at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used in the specification of this application are for illustrative purposes only and do not represent the only implementation method.

[0040] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of such features. Throughout the description of this application, "plurality" means at least two, for example, two, three, etc., unless otherwise specifically defined.

[0041] In this application, unless otherwise expressly specified or limited, when a first feature is "above" or "below" a second feature, it can mean that the first feature is directly in contact with the second feature, or the first feature and the second feature are indirectly in contact through an intermediary. Furthermore, when a first feature is "above," "above," or "above" a second feature, it can mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is higher in level than the second feature. When a first feature is "below," "below," or "below" a second feature, it can mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is lower in level than the second feature.

[0042] Unless otherwise defined, all technical and scientific terms used in the specification of this application have the same meaning as commonly understood by those skilled in the art to which this application belongs. The terms used in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application. The term "and / or" used in the specification of this application includes any and all combinations of one or more of the relevant listed items.

[0043] like Figures 1 to 4As shown, an automotive head-up display device 100 provided in one embodiment of the present application includes a metal housing 10, a projection module 20, a metal fin 30 and a metal grounding plate 40. The projection module 20 is accommodated in the metal housing 10. The projection module 20 includes a first printed circuit board 21 and a second printed circuit board 22. The first printed circuit board 21 and the second printed circuit board 22 are arranged on both sides of the projection module 20 and form a preset gap with the metal housing 10 respectively; the metal fin 30 and the first printed circuit board 21 are connected by a first metal fastener 50, and the metal fin 30 is electrically connected to the metal housing 10; the metal grounding plate 40 and the metal housing 10 are connected by a second metal fastener 60, and the metal grounding plate 40 is electrically connected to the second printed circuit board 22.

[0044] It can be understood that by adding the first metal fastener 50 and the metal fin 30, the second metal fastener 60 and the metal grounding plate 40, the first printed circuit board 21 and the second printed circuit board 22 can be electrically connected to the metal housing 10 respectively, so that the electrostatic energy coupled to the first printed circuit board 21 and the second printed circuit board 22 can be discharged through the metal housing 10. On the one hand, this can prevent the first printed circuit board 21 and the second printed circuit board 22 from being damaged by the accumulation of electrostatic energy, thereby ensuring the normal operation of the automobile head-up display device 100. On the other hand, the projection module 20 can be improved on the basis of the original structure, which has the effect of reducing costs.

[0045] like Figure 1 、 Figure 2 As shown, in one embodiment, a first metal fastener 50 is disposed through the metal fin 30 and is screwed to the first printed circuit board 21. In other words, the metal fin 30 is screwed to the first printed circuit board 21, which facilitates assembly of the metal fin 30 onto the first printed circuit board 21. It is understood that in other embodiments, the first metal fastener 50 may be assembled onto the first printed circuit board 21 using other methods such as snap-fitting or tight-fitting, which will not be discussed in detail here. Here, the first metal fastener 50 can be configured as a conductive metal member such as a bolt, screw, or latch. In this embodiment, there are two first metal fasteners 50, which improves the electrical connection stability between the metal fin 30 and the first printed circuit board 21 when connected using the first metal fasteners 50.

[0046] like Figure 1As shown, in one embodiment, a first thermally conductive barrier layer (not shown) is disposed between the first printed circuit board 21 and the metal fins 30. The first thermally conductive barrier layer is thermally connected to the first printed circuit board 21 and the metal fins 30, respectively. This arrangement allows the metal fins 30 to dissipate heat from the first printed circuit board 21, further improving the heat dissipation efficiency of the first printed circuit board 21. The first thermally conductive barrier layer can be configured as thermally conductive silicone grease, thermally conductive adhesive, or the like.

[0047] like Figure 2 、 Figure 4 As shown, in one embodiment, a spacer 80 is provided between the metal fin 30 and the metal housing 10. The spacer 80 contacts the metal fin 30 and the metal housing 10, respectively, so that the metal fin 30 can be electrically connected to the metal housing 10 through the spacer 80. In other words, the metal fin 30 and the metal housing 10 are electrically connected via the spacer 80, so that the electrostatic energy coupled to the first printed circuit board 21 can be discharged sequentially through the metal fin 30, the spacer 80, and the metal housing 10. This prevents the electrostatic energy accumulated on the first printed circuit board 21 and the metal fin 30 from being discharged through the metal housing 10 by air breakdown, thereby preventing damage to the first printed circuit board 21 and ensuring the normal operation of the projection module 20. Here, the spacer 80 is configured as a thermally conductive and electrically conductive sheet having a conductive portion 81. The metal fin 30 can be electrically connected to the metal housing 10 via the conductive portion 81, wherein the conductive portion 81 is made of aluminum foam material.

[0048] like Figure 2 、 Figure 4 As shown, in one embodiment, the metal fins 30 are also thermally connected to the metal housing 10 via spacers 80. Specifically, the spacers 80 thermally connect the metal fins 30 to the metal housing 10, allowing heat generated by the first printed circuit board 21 during operation to be transferred to the metal housing 10 via the first metal fasteners 50, the metal fins 30, and the spacers 80. The metal housing 10 then dissipates heat from the first printed circuit board 21, improving the heat dissipation efficiency of the first printed circuit board 21 and ensuring proper operation of the automotive head-up display device 100. Here, the spacers 80 are configured as thermally conductive sheets having a heat conducting portion 82. The metal fins 30 are thermally connected to the metal housing 10 via the heat conducting portion 82, wherein the heat conducting portion 82 is made of thermally conductive silicone grease.

[0049] like Figures 1 to 3As shown, in one embodiment, the metal grounding plate 40 includes a contact spring 41, which overlaps the second printed circuit board 22 and electrically connects the metal grounding plate 40 to the second printed circuit board 22. It will be appreciated that the electrical connection between the metal grounding plate 40 and the second printed circuit board 22 via the contact spring 41 facilitates the electrical connection between the metal grounding plate 40 and the second printed circuit board 22. Furthermore, the structural features of the contact spring 41 improve the stability of the electrical connection between the contact spring 41 and the second printed circuit board 22 when the second metal fastener 60 is used to connect the metal grounding plate 40 to the metal housing 10 and electrically connect them.

[0050] like Figure 1 As shown, in one embodiment, there are multiple second printed circuit boards 22, each of which is independently arranged. There are also multiple contact springs 41, each corresponding to a plurality of second printed circuit boards 22. Furthermore, the contact springs 41 overlap the corresponding second printed circuit boards 22. In other words, a single metal grounding plate 40 can simultaneously overlap multiple second printed circuit boards 22 at different locations, simplifying the structure. Here, there are three second printed circuit boards 22, and correspondingly, there are also three contact springs 41. It is understood that in other embodiments, the number of second printed circuit boards 22 may be two, four, or even more, which will not be elaborated here.

[0051] like Figure 1 、 Figure 2 As shown, in one embodiment, a second metal fastener 60 is disposed through the metal grounding plate 40 and is screwed to the metal housing 10. That is, the metal grounding plate 40 is screwed to the metal housing 10, which facilitates assembly of the metal grounding plate 40 to the metal housing 10. It is understood that in other embodiments, the second metal fastener 60 may be assembled to the second printed circuit board 22 using methods such as snap-fitting or tight-fitting, which will not be elaborated here. In this embodiment, there are two second metal fasteners 60. Accordingly, the metal grounding plate 40 defines two through-holes 42, which are spaced apart along the length of the metal grounding plate 40. Each second metal fastener 60 can pass through a corresponding through-hole 42 in the metal grounding plate 40 and be screwed to the metal housing 10. This improves the connection strength between the metal grounding plate 40 and the metal housing 10, thereby enhancing the stability of the electrical connection between the metal grounding plate 40 and the metal housing 10. The second metal fastener 60 can be configured as a conductive metal member such as a bolt, screw, or latch.

[0052] like Figure 1 、 Figure 2As shown, in one embodiment, a second thermally conductive barrier layer 90 is disposed between the second printed circuit board 22 and the metal housing 10. The second thermally conductive barrier layer 90 is thermally connected to the second printed circuit board 22 and the metal housing 10, respectively. This allows the metal housing 10 to dissipate heat from the second printed circuit board 22, thereby improving the heat dissipation efficiency of the second printed circuit board 22. The second thermally conductive barrier layer 90 can be configured as thermally conductive silicone grease, thermally conductive adhesive, or the like.

[0053] In summary, the automotive head-up display device 100 of the present application electrically connects the first printed circuit board 21 to the metal fin 30 through the first metal fastener 50, and the metal fin 30 is electrically connected to the metal housing 10 through the spacer 80, thereby achieving electrical connection between the first printed circuit board 21 and the metal housing 10, so that the electrostatic energy coupled to the first printed circuit board 21 can be discharged in sequence through the first metal fastener 50, the metal fin 30, the spacer 80 and the metal housing 10; at the same time, the metal grounding plate 40 is electrically connected to the second printed circuit board 22 through the second metal fastener 60, and the metal grounding plate 40 is electrically connected to the second printed circuit board 22 through the second metal fastener 60. 0 is electrically connected to the metal housing 10, thereby achieving electrical connection between the second printed circuit board 22 and the metal housing 10. In this way, the electrostatic energy coupled to the second printed circuit board 22 can be discharged sequentially through the metal grounding plate 40, the second metal fastener 60, and the metal housing 10. In this way, the automotive head-up display device 100 achieves the discharge of static electricity coupled to the first printed circuit board 21 and the second printed circuit board 22 through the metal housing 10 in a multi-stage overlapping manner, preventing damage to the projection module 20 caused by the accumulation of electrostatic energy on the first and second printed circuit boards 21, 22, thereby ensuring the normal operation of the automotive head-up display device 100.

[0054] The present application also provides a car, comprising the above-mentioned car head-up display device 100.

[0055] The technical features of the above-mentioned embodiments can be combined arbitrarily. In order to make the description concise, not all possible combinations of the technical features in the above-mentioned embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0056] The above-described embodiments merely represent several implementation methods of the present application. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that a person of ordinary skill in the art may make various modifications and improvements without departing from the spirit of the present application, all of which fall within the scope of protection of the present application. Therefore, the scope of patent protection for the present application shall be determined by the appended claims.

Claims

1. A head-up display device for an automobile, characterized in that: The automobile head-up display device (100) comprises: Metal housing (10); A projection module (20) is housed in the metal housing (10), the projection module (20) comprising a first printed circuit board (21) and a second printed circuit board (22), the first printed circuit board (21) and the second printed circuit board (22) being arranged on both sides of the projection module (20) and forming a preset gap with the metal housing (10); The metal fin (30) is connected to the first printed circuit board (21) by a first metal fastener (50), and the metal fin (30) is electrically connected to the metal housing (10); The metal grounding plate (40) is connected to the metal housing (10) via a second metal fastener (60), and the metal grounding plate (40) is electrically connected to the second printed circuit board (22).

2. The automobile head-up display device according to claim 1, characterized in that: A spacer (80) is provided between the metal fin (30) and the metal shell (10), and the spacer (80) contacts the metal fin (30) and the metal shell (10) respectively, so that the metal fin (30) can be electrically connected to the metal shell (10) through the spacer (80).

3. The automobile head-up display device according to claim 2, characterized in that: The metal fin (30) is also thermally connected to the metal shell (10) through the spacer (80).

4. The automotive head-up display device according to claim 1, characterized in that: A first heat-conducting insulating layer is provided between the first printed circuit board (21) and the metal fin (30), and the first heat-conducting insulating layer is thermally connected to the first printed circuit board (21) and the metal fin (30) respectively.

5. The automobile head-up display device according to claim 1, characterized in that: The first metal fastener (50) is arranged through the metal fin (30) and is screwed to the first printed circuit board (21).

6. The automotive head-up display device according to claim 1, characterized in that: The metal grounding plate (40) includes a contact spring (41), and the contact spring (41) is overlapped on the second printed circuit board (22) and electrically connects the metal grounding plate (40) to the second printed circuit board (22).

7. The automotive head-up display device according to claim 6, characterized in that: The number of the second printed circuit boards (22) is configured to be multiple, and the multiple second printed circuit boards (22) are independently arranged. The number of the contact springs (41) is also multiple, and the multiple contact springs (41) correspond one-to-one to the multiple second printed circuit boards (22), and the contact springs (41) overlap with the corresponding second printed circuit boards (22).

8. The automobile head-up display device according to claim 1, characterized in that: The second metal fastener (60) is arranged through the metal grounding plate (40) and is screwed to the metal housing (10).

9. The automobile head-up display device according to claim 1, characterized in that: A second heat-conducting insulating layer (90) is provided between the second printed circuit board (22) and the metal shell (10), and the second heat-conducting insulating layer (90) is thermally connected to the second printed circuit board (22) and the metal shell (10), respectively.

10. An automobile, characterized in that: The vehicle head-up display device (100) comprises any one of claims 1 to 9.

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