Cooling device, head-up display equipment and vehicle

Abstract

The utility model provides a cooling device, head-up display equipment and a vehicle, the cooling device is applied to the head-up display equipment, the cooling device comprises a heat pipe structure and a heat dissipation structure, the heat pipe structure comprises at least one heat pipe, the heat pipe is provided with an evaporation pipe section and a condensation pipe section, and when the heat pipe is installed on the head-up display equipment, the heat dissipation structure can dissipate heat from the evaporation pipe section to the condensation pipe section. The evaporation pipe section is located on the side, away from the light-emitting face, of the backlight source and used for transferring heat to the condensation pipe section in the axial direction of the heat pipe. The condensation pipe section is located at the position farther away from the backlight source relative to the evaporation pipe section. The heat dissipation structure is arranged at the position where the condensation pipe section is located and used for conducting heat generated by the condensation pipe section. According to the scheme, the problem that in the prior art, the heat dissipation efficiency of a backlight source is low can be solved.

Description

Technical Field

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

[0002] Head-up display (HUD) technology uses the principle of optical reflection to project light from an image source onto an imaging window (imaging board, windshield, etc.), which then reflects it into the eye box to form a virtual image. This virtual image can display desired information, such as vehicle speed and other driving-related information, to avoid distraction caused by looking down at the instrument panel while driving, thereby improving driving safety and providing a better driving experience.

[0003] However, the existing HUD backlight source dissipates heat through the use of heat dissipation fins. The heat dissipation efficiency of this heat dissipation structure depends on the material and heat dissipation area of ​​the heat dissipation fins. Since the heat dissipation fins are usually made of materials with low thermal conductivity such as metal aluminum, and the heat dissipation area is limited by the installation space where the HUD backlight source is located, the heat dissipation efficiency of the heat dissipation fins for the backlight source is low, thereby affecting the service life of the backlight source and even the display effect of the HUD. Utility Model Content

[0004] The present application aims to solve at least one of the technical problems existing in the prior art, and proposes a cooling device, a head-up display device and a vehicle, which can solve the problem of low heat dissipation efficiency of the backlight source in the prior art.

[0005] To achieve the above objectives, an embodiment of the present application provides a cooling device for use in a head-up display device, comprising a heat pipe structure and a heat dissipation structure. The heat pipe structure includes at least one heat pipe having an evaporation section and a condensation section. When the heat pipe is installed in the head-up display device, the evaporation section is located on a side of a backlight source facing away from its light-emitting surface, and is configured to transfer heat to the condensation section along the axial direction of the heat pipe. The condensation section is located further away from the backlight source than the evaporation section.

[0006] The heat dissipation structure is arranged at the location of the condensing pipe section and is used for conducting the heat generated by the condensing pipe section.

[0007] In some embodiments, the axial direction of the evaporation tube segment is parallel to the light emitting surface of the backlight source.

[0008] In some embodiments, the axial direction of the condensing pipe section forms an angle with the axial direction of the evaporating pipe section.

[0009] In some embodiments, there are multiple heat pipes, and the evaporation sections of the multiple heat pipes are located in the same plane parallel to the axial direction of the evaporation section and are distributed at intervals, and the distance between the evaporation sections of the multiple heat pipes and the backlight source is the same.

[0010] In some embodiments, there are multiple heat pipes, and the axes of the condensing pipe sections of the multiple heat pipes are parallel to each other. The condensing pipe sections of the multiple heat pipes are distributed at intervals and staggered with each other.

[0011] In some embodiments, the heat pipe structure also includes a heat distributing component, which, when installed in the head-up display device, is located on the side of the backlight source away from its light-emitting surface; at least one accommodating groove is formed on the surface of the heat distributing component opposite to the backlight source, and at least part of the evaporation tube section of each heat pipe is arranged one by one in each of the accommodating grooves.

[0012] In some embodiments, the evaporation tube section is flush with a surface of the heat distributing component opposite to the backlight source.

[0013] In some embodiments, the heat dissipation structure includes a plurality of fins, and the condenser section of each heat pipe is arranged to pass through the plurality of fins.

[0014] In some embodiments, the fins are spaced apart along a first direction to form a heat dissipation channel between two adjacent fins; the plane on which each fin lies is angled with the first direction; and the first direction is parallel to the axial direction of the condenser tube section. In some embodiments, the heat dissipation structure further includes a blower fan configured to supply air to the fins.

[0015] In some embodiments, when the air supply fan is installed on the head-up display device, the air inlet side of the air supply fan can be connected to the accommodating space of the box body for accommodating the optical functional parts of the image source, and / or be connected to the space enclosed by the frame between the display panel of the image source and the optical functional parts of the image source.

[0016] As another technical solution, an embodiment of the present application further provides a head-up display device, including a backlight source and the above-mentioned cooling device provided in an embodiment of the present application.

[0017] In some embodiments, further comprising a housing;

[0018] The cooling device is located outside the housing, and the backlight source is located inside the housing; or,

[0019] The cooling device and the backlight source are both located outside the housing; or,

[0020] In the heat pipe structure of the cooling device, the evaporation pipe section of the heat pipe is located inside the shell, and the condensation pipe section of the heat pipe is located outside the shell; and the backlight source is located inside the shell.

[0021] In some embodiments, the invention further comprises a frame, a display panel of an image source, and an optical functional component, wherein the frame is disposed between the display panel and the optical functional component;

[0022] The heat dissipation structure includes multiple fins and an air supply fan, and the condensation pipe section of each heat pipe is arranged through the multiple fins; the air supply fan is used to supply air to the multiple fins; the air inlet side of the air supply fan is connected to the space enclosed by the frame between the display panel and the optical functional component.

[0023] In some embodiments, the backlight source further comprises a box body and an optical functional component, wherein the box body is provided with a receiving space for receiving the optical functional component, and the optical functional component is located on a light emitting surface side of the backlight source;

[0024] The heat dissipation structure includes a plurality of fins and an air supply fan, and the condensation pipe section of each heat pipe is arranged to pass through the plurality of fins; the air supply fan is used to supply air to the plurality of fins; and the air inlet side of the air supply fan is connected to the accommodating space.

[0025] In some embodiments, the air supply fan is located on a side of the circumferential side wall of the box body away from the accommodating space, and the air inlet side of the air supply fan is opposite to the circumferential side wall;

[0026] A connecting channel is provided in the circumferential side wall of the box body, an inlet of the connecting channel is communicated with the accommodating space, and an outlet of the connecting channel is communicated with the air inlet side of the air supply fan.

[0027] As another technical solution, an embodiment of the present application further provides a vehicle, comprising:

[0028] The above-mentioned head-up display device provided in an embodiment of the present application.

[0029] Other objects and features of the present application will become clear by reading the specification, claims and drawings of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] The above and / or additional aspects and advantages of the present application will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0031] Figure 1 Schematic diagram of the application of head-up display devices provided in some examples;

[0032] Figure 2A cross-sectional view of a cooling device provided in an embodiment of the present application installed on a head-up display device assembled with a housing;

[0033] Figure 3 A structural diagram of a single heat pipe of a cooling device provided in an embodiment of the present application;

[0034] Figure 4 for Figure 2 A partial enlarged view of the assembly of the heat dissipation structure and the head-up display device;

[0035] Figure 5 An external structural diagram showing an air supply fan of a cooling device provided in an embodiment of the present application installed on a head-up display device;

[0036] Figure 6 This is a cross-sectional view of the connection between the connection cavity of the cooling device provided in an embodiment of the present application and the circumferential side wall of the box body of the head-up display device.

[0037] Description of main component symbols:

[0038] 100-image source; 10-light source; 20-display panel; 30-optical functional parts; 41-heat pipe structure; 411-heat pipe; 411a-evaporation pipe section; 411b-condensation pipe section; 411c-insulation pipe section; 42-heat dissipation structure; 421-fins; 422-heat dissipation channel; 423-air supply fan; 424-connecting cavity; 50-box; 501-accommodation space; 502-connecting channel; 503-second air outlet duct; 60-frame; 601-space enclosed by frame 60; 602-first air outlet duct; 70-housing; 200-windshield; 300-preset eye box area; 400-virtual image. DETAILED DESCRIPTION

[0039] The embodiments of the present application are described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application and are not to be construed as limiting the present application.

[0040] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more features. In the description of the present application, "multiple" means two or more, unless otherwise clearly and specifically defined.

[0041] In the description of this application, it should be noted that, unless otherwise expressly specified or limited, the terms "installed," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections, electrical connections, or mutual communication; they can refer to direct connections or indirect connections through an intermediate medium; they can refer to internal communication between two components or the interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on specific circumstances.

[0042] The disclosure below provides many different embodiments or examples for realizing different structures of the present application. In order to simplify the disclosure of the present application, the components and settings of specific examples are described below. Of course, they are merely examples and are not intended to limit the present application. In addition, the present application may repeat reference numbers and / or reference letters in different examples, and such repetition is for the purpose of simplicity and clarity, and does not itself indicate the relationship between the various embodiments and / or settings discussed. In addition, the present application provides examples of various specific processes and materials, but those of ordinary skill in the art will appreciate the application of other processes and / or the use of other materials.

[0043] Throughout this specification, reference to terms such as "one embodiment," "certain embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples" means that a specific feature, structure, material, or characteristic described in conjunction with an embodiment or example is included in at least one embodiment or example of the present application. In this specification, 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 any one or more embodiments or examples.

[0044] In the related art, the backlight source of the HUD dissipates heat by using heat dissipation fins. The heat dissipation efficiency of this heat dissipation structure depends on the material and heat dissipation area of ​​the heat dissipation fins. Since the heat dissipation fins are usually made of materials with low thermal conductivity such as metal aluminum, and the heat dissipation area is limited by the installation space where the HUD backlight source is located, the heat dissipation efficiency of the heat dissipation fins for the backlight source is low, which affects the service life of the backlight source and even affects the display effect of the HUD.

[0045] In order to solve the above technical problems, the embodiment of the present application provides a cooling device, which is applied to a head-up display device, and the head-up display device can be installed on a vehicle or other means of transportation. Figure 1 As shown, the head-up display device includes an image source 100 for outputting image light. The image source 100 includes a backlight source 10, a display panel 20 disposed on the light-emitting side of the backlight source 10, and an optical functional component 30. For example, the display panel 20 is a liquid crystal display panel. The display panel 20 includes a plurality of pixel units, each of which includes a plurality of pixels. For example, each pixel unit includes a red pixel, a green pixel, and a blue pixel; for another example, each pixel unit includes a red pixel, a green pixel, a blue pixel, and a white pixel. The display panel 20 is configured to convert light from the backlight source 10 into image light. The vehicle's windshield 200 is configured to reflect the image light toward a predetermined eyebox area 300. When an observer's eyes are within the predetermined eyebox area 300, the observer can see the image formed by the image light. In this case, the image the observer sees is a virtual image 400 formed by the windshield 200 through reflection imaging. The observer, who can be a driver or passenger, can obtain required vehicle information, such as driving speed and fuel consumption, from the virtual image 400 in front of their line of sight. Other information, such as a virtual rearview mirror image or audio and video entertainment images, can also be obtained. The preset eyebox area (i.e., eyebox) 300 specifically refers to the area where the observer's eyes are located and where the image output by the head-up display device (i.e., the virtual image 400) can be seen.

[0046] The optical functional component 30 is provided between the backlight source 10 and the display panel 20, and is used to adjust the light of the backlight source 10 so that the outgoing light of the display panel 20 is directed to the preset eye box area 300. The adjustment of the light by the optical functional component 30 includes but is not limited to directional control such as collimation, focusing, and diffusion, which may include, for example, a converging element, a light angle control element, a diffusion element, and the like. The light angle control element may include a combination of one or more of a convex lens, a concave lens, and a Fresnel lens. In addition, the head-up display device further includes a housing 70 (such as Figure 2 As shown in FIG5 , the display panel 20 is located outside the housing 70, and the corresponding components located on the light-emitting side of the display panel 20 are located inside the housing 70. However, the embodiments of the present application are not limited thereto. In actual applications, the display panel 20 may also be located inside the housing 70. In addition, the optical functional component 30 may be located inside or outside the housing 70, or partly inside the housing 70 and partly outside the housing 70. The backlight source 10 may be located inside or outside the housing 70, or partly inside the housing 70 and partly outside the housing 70.

[0047] See also Figure 2 The cooling device provided in an embodiment of the present application includes a heat pipe structure 41 and a heat dissipation structure 42, wherein the heat pipe structure 41 includes at least one heat pipe 411, and the heat pipe 411 has an evaporation pipe section 411a and a condensation pipe section 411b. When the heat pipe 411 is installed in the head-up display device, the evaporation pipe section 411a is located on the side of the backlight source 10 away from its light-emitting surface, and is used to transfer heat to the condensation pipe section 411b along the axial direction of the heat pipe 411; the condensation pipe section 411b is located at a position farther away from the backlight source 10 relative to the evaporation pipe section 411a; the heat dissipation structure 42 is arranged at the position where the condensation pipe section 411b is located, and is used to conduct the heat generated by the condensation pipe section 411b.

[0048] Specifically, a typical heat pipe 411 consists of a tube shell, a liquid wick, and an end cap. During the manufacturing process, the inside of the tube shell is evacuated to form a negative pressure, and then filled with an appropriate amount of liquid (this liquid has a low boiling point and is easily volatile). After the liquid is filled in the liquid wick (usually a capillary porous material) close to the inner wall of the tube shell, the inside of the tube shell is sealed. Figure 3 As shown, the heat pipe 411 is typically divided into three sections along its axial direction. The two sections at the ends are the evaporation section 411a and the condensation section 411b, respectively. The central section is, for example, the insulation section 411c. Preferably, to allow the evaporation section 411a to mate with the surface of the backlight 10 facing away from the light emitting surface, thereby increasing the heat dissipation area, a tangent plane 411d is defined on the outer periphery of the evaporation section 411a toward the backlight 10. This tangent plane 411d is configured to mate with the surface of the backlight 10 facing away from the light emitting surface.

[0049] The operating principle of heat pipe 411 is to rapidly conduct heat by utilizing the phase change of the medium in condenser section 411b after evaporation of the evaporator section 411a (i.e., utilizing the latent heat of evaporation and condensation of the liquid). Specifically, when evaporator section 411a of heat pipe 411 is heated, the liquid in the wick rapidly vaporizes. Driven by thermal diffusion, the vapor flows toward condenser section 411b, where it condenses and releases heat. The liquid then flows back to evaporator section 411a via capillary action along the porous capillary material of the wick. This cycle continues until the temperatures of evaporator section 411a and condenser section 411b of heat pipe 411 are equal (at which point thermal diffusion of the vapor ceases). This cycle is rapid, and the heat absorbed by evaporator section 411a can be continuously conducted to condenser section 411b for release through condensation.

[0050] On this basis, when the heat pipe 411 used in the embodiment of the present application is installed in a head-up display device, the evaporation pipe section 411a of the heat pipe 411 is located on the side of the backlight source 10 away from its light-emitting surface, and is used to transfer heat to the condensation pipe section 411b along the axial direction of the heat pipe 411, thereby absorbing heat from the backlight source 10 and continuously conducting the heat to the condensation pipe section 411b for condensation and release until the temperatures of the evaporation pipe section 411a and the condensation pipe section 411b of the heat pipe 411 are equal, thereby achieving heat dissipation of the backlight source 10; at the same time, since the condensation pipe section 411b is located farther away from the backlight source 10 than the evaporation pipe section 411a, , that is, the condensing pipe section 411b is relatively far away from the backlight source 10. On the one hand, this allows the condensing pipe section 411b to release heat at a position relatively far away from the backlight source 10, avoiding affecting the heat dissipation efficiency of the backlight source 10 due to its close distance to the backlight source 10; on the other hand, the condensing pipe section 411b can be installed in an appropriate position to facilitate the installation of the heat dissipation structure 42. For example, in a case where the head-up display device includes a box body 50 for accommodating the optical functional part 30, the backlight source 10 is located at the bottom of the accommodating space of the box body 50, and the condensing pipe section 411b can be installed on the side of the circumferential side wall of the box body 50 away from the accommodating space. In this way, not only can the heat pipe 411 conduct the heat from the backlight source 10 to the circumferential side of the box body 50 to avoid affecting the heat dissipation efficiency of the backlight source 10 due to the heat release position being close to the backlight source 10; it can also install the heat dissipation structure 42 on the circumferential side wall of the box body 50 and be located on the same side as the condensation pipe section 411b, thereby facilitating the installation of the heat dissipation structure 42, and reducing the space occupied by the head-up display device on the side of the backlight source 10 away from its light-emitting surface, thereby reducing the size of the head-up display device in the direction perpendicular to the light-emitting surface of the backlight source 10.

[0051] Furthermore, by arranging the heat dissipation structure 42 at the location of the condensing pipe section 411b to conduct the heat generated by the condensing pipe section 411b, the efficiency of the condensing pipe section 411b in releasing heat can be improved, thereby further improving the heat dissipation efficiency of the backlight source 10.

[0052] The cooling device provided in the embodiment of the present application has a completely different heat dissipation principle compared to the heat dissipation method using heat dissipation fins 421 in the related art, and has a higher heat dissipation efficiency, thereby extending the service life of the backlight source 10 and ensuring the display effect of the HUD.

[0053] In some embodiments, to more evenly absorb heat from different locations on the backlight 10 and improve the uniformity of temperature distribution at different locations on the backlight 10 (particularly along the axial direction of the evaporation tube segment 411a), the axial direction of the evaporation tube segment 411a is parallel to the light-emitting surface of the backlight. This ensures that all locations on the evaporation tube segment 411a are equidistant from the light-emitting surface of the backlight 10, achieving the aforementioned effect.

[0054] There are many ways to implement the condensation pipe section 411b being located at a position farther away from the backlight source 10 relative to the evaporation pipe section 411a. In some embodiments, for example, Figure 4 As shown, the axial direction of the condensing pipe section 411b forms an angle with the axial direction of the evaporating pipe section 411a. In this way, under the premise that the axial direction of the evaporating pipe section 411a is parallel to the light emitting surface of the backlight source 10, the condensing pipe section 411b can be located on the side of the circumferential side wall of the box body 50 away from the accommodating space. In other embodiments, it can also be located on the side of the evaporating pipe section 411a away from the backlight source 10. Both positions are relatively far away from the backlight source 10, thereby achieving the purpose of avoiding affecting the heat dissipation efficiency of the backlight source 10. The angle between the axial direction of the condensing pipe section 411b and the axial direction of the evaporating pipe section 411a can be any angle in the range of greater than or equal to 0° and less than or equal to 180°, preferably greater than or equal to 90° and less than 180°, and further preferably 90°. In actual applications, it is also possible to set the portion of the heat pipe 411 located between the condensing pipe section 411b and the evaporating pipe section 411a (for example, Figure 3 The position of the condensing pipe section 411b and the distance between the condensing pipe section 411b and the backlight source 10 can be adjusted by adjusting the different lengths of the insulating pipe section 411c) shown in FIG.

[0055] Furthermore, in some embodiments, to more evenly absorb heat from different positions of the backlight source and improve the uniformity of temperature distribution at different positions of the backlight source 10 (particularly in a direction perpendicular to the axial direction of the evaporation tube segment 411a), multiple heat pipes 411 are provided, and the evaporation tube segments 411a of the multiple heat pipes 411 are located in the same plane parallel to the axial direction of the evaporation tube segment 411a and are spaced apart. Here, the evaporation tube segments 411a of the multiple heat pipes 411 are located in the same plane, and specifically, the axes of the evaporation tube segments 411a of the multiple heat pipes 411 are located in the same plane. This plane is parallel to the light-emitting surface of the backlight source 10. On the basis that the axial direction of the evaporation tube segment 411a is parallel to the light-emitting surface of the backlight source 10 to improve the temperature distribution uniformity of the backlight source 10 along the axial direction of the evaporation tube segment 411a, the evaporation tube segments 411a of multiple heat pipes 411 are located in the same plane parallel to the axial direction of the evaporation tube segment 411a and are distributed at intervals, the temperature distribution uniformity in the entire plane where the backlight source 10 is located can be more effectively improved.

[0056] Furthermore, in some embodiments, in order to more effectively improve the uniformity of temperature distribution within the entire plane where the backlight source is located, a plurality of heat pipes 411 are simultaneously installed uniformly, so that the evaporation tube sections 411a of the plurality of heat pipes 411 are located in the same plane parallel to the axial direction of the evaporation tube section 411a. The heat pipe structure 41 also includes a heat distribution component (not shown in the figure). When the heat distribution component is installed in the head-up display device, it is located on the side of the backlight source 10 away from its light-emitting surface; at least one accommodating groove is formed on the surface of the heat distribution component opposite to the backlight source 10, and at least part of the evaporation tube section 411a of each heat pipe 411 is arranged in each accommodating groove in a one-to-one correspondence. The heat distribution component can not only realize the installation of the evaporation tube section 411a of each heat pipe 411 through the accommodating groove, but also achieve a heat distribution effect by conducting heat between the evaporation tube sections 411a.

[0057] Preferably, in order to allow both the heat distribution component and the evaporation tube segment 411a to be attached to the surface of the backlight source 10 facing away from its light emitting surface (e.g., the back of the light source mounting plate of the backlight source 10), thereby further improving heat dissipation efficiency and heat dissipation uniformity, the evaporation tube segment 411a is flush with the surface of the heat distribution component opposite to the backlight source 10. Of course, in actual applications, it is also possible that one of the heat distribution component and the evaporation tube segment 411a is attached to the surface of the backlight source 10 facing away from its light emitting surface, while the other is not attached. In this case, the evaporation tube segment 411a may be protruding or recessed relative to the surface of the heat distribution component opposite to the backlight source 10.

[0058] In other embodiments, the axial direction of the evaporation tube segment 411a may not be parallel to the light-emitting surface of the backlight source 10, that is, the axial direction of the evaporation tube segment 411a may form an angle with the light-emitting surface of the backlight source 10. Furthermore, in embodiments where there are multiple heat pipes 411, the axial directions of the evaporation tube segments 411a of the multiple heat pipes 411 may all form the same angle with the light-emitting surface of the backlight source 10.

[0059] In an embodiment where there are multiple heat pipes 411, Figure 4 As shown, the axial directions of the condensing sections 411b of the multiple heat pipes 411 are parallel to each other, and the condensing sections 411b of the multiple heat pipes 411 are spaced and staggered. In other words, the condensing sections 411b of the multiple heat pipes 411 are not arranged in a row, for example, Figure 4 As shown, taking the example of three heat pipes 411 having condenser sections 411b installed on the side of the circumferential sidewall of the box body 50 facing away from the accommodating space, the condenser sections 411b of the three heat pipes 411 are arranged in two rows, the distances between the two rows of condenser sections 411b and the circumferential sidewall of the box body 50 are different, and two adjacent condenser sections 411b are located in different rows. This is conducive to the dispersed arrangement of the condenser sections 411b, avoiding the impact on the heat release efficiency of the condenser sections 411b due to the multiple condenser sections 411b being concentrated in the same row. Of course, in actual applications, the condenser sections 411b of the multiple heat pipes 411 can also be dispersed in other ways, as long as the heat release efficiency of the condenser sections 411b can be improved.

[0060] In some embodiments, in order to achieve heat dissipation of the condensation pipe section 411b of the heat pipe 411, as shown in FIG. Figure 4 As shown, the heat dissipation structure 42 includes, for example, a plurality of fins 421, and the condensing pipe section 411b of each heat pipe 411 is arranged to pass through the plurality of fins 421. The plurality of fins 421 can conduct the heat released by the condensing pipe section 411b to the external environment, thereby further improving the efficiency of heat release by the condensing pipe section 411b. On this basis, by allowing the condensing pipe section 411b of each heat pipe 411 to pass through the plurality of fins 421, each condensing pipe section 411b can be in contact with all of the fins 421, so that all of the fins 421 can directly dissipate heat from each condensing pipe section 411b, thereby improving heat dissipation efficiency.

[0061] Furthermore, in some embodiments, the plurality of fins 421 are spaced apart along a first direction to form a heat dissipation channel 422 between each two adjacent fins 421; the plane on which each fin 421 lies is angled with the first direction; and the first direction is parallel to the axial direction of the condenser tube segment 411b. In other words, the plurality of fins 421 are spaced apart along the axial direction of the condenser tube segment 411b, and the plane on which each fin 421 lies is angled with the axial direction of the condenser tube segment 411b (e.g., 90°). This facilitates the condenser tube segment 411b of each heat pipe 411 to pass through all the fins 421. Furthermore, by forming a heat dissipation channel 422 between each two adjacent fins 421, heat conduction between each fin 421 and the air in the heat dissipation channel 422 is facilitated, thereby allowing the heat from the fins 421 to be removed by the air.

[0062] Preferably, in order to increase the air flow speed in the heat dissipation channel 422 and further improve the heat dissipation efficiency of the fins 421, as shown in FIG. Figure 4 and Figure 5 As shown, the heat dissipation structure 42 further includes an air supply fan 423 , which is used to supply air to the multiple fins 421 .

[0063] In some embodiments, when the head-up display device includes a box body 50 for accommodating the optical functional component 30 of the image source, and when the air supply fan 423 is installed in the head-up display device, as shown in FIG. Figure 4 As shown, the air inlet side of the air supply fan 423 can be connected to the accommodating space 501 of the box body 50, so that the air supply fan 423 can provide suction power to draw out the air in the accommodating space 501 of the box body 50, and flow it to the external environment through the heat dissipation channel 422 formed between each two adjacent fins 421, so that the air in the accommodating space 501 of the box body 50 can be drawn out on the basis of using the air supply fan 423 to supply air to multiple fins 421 to increase the air flow speed in the heat dissipation channel 422, so that the accommodating space 501 of the box body 50 can be cooled, which is beneficial to the heat dissipation of the optical functional part 30 of the image source located in the accommodating space 501.

[0064] Similar, such as Figure 4As shown, the air inlet side of the air supply fan 423 can also be connected to the space 601 enclosed by the frame 60 between the display panel 20 of the image source and the optical functional component 30 of the image source. In this way, the air supply fan 423 can provide suction power to draw air out of the space 601 enclosed by the frame 60, and the air flows to the external environment through the heat dissipation channel 422 formed between each two adjacent fins 421. Therefore, while the air supply fan 423 is used to supply air to the multiple fins 421 to increase the air flow speed in the heat dissipation channel 422, the air in the space 601 enclosed by the frame 60 can be drawn out, thereby dissipating heat from the space 601 enclosed by the frame 60, thereby facilitating the heat dissipation of the display panel 20 and the optical functional component 30 exposed to the space 601 enclosed by the frame 60. In particular, the display panel 20 can effectively reduce the temperature rise on the light-entering side of the display panel 20 by dissipating heat from the space 601 enclosed by the frame 60, that is, reducing the temperature of the space between the display panel 20 and the optical functional component 30. This can greatly reduce or even avoid the risk of the display panel 20 exceeding the required operating temperature or burning.

[0065] It should be noted that the air inlet side of the air supply fan 423 can be connected to at least one of the accommodating space 501 of the box body 50 and the space 601 surrounded by the frame 60. On this basis, the specific manner in which the air inlet side of the air supply fan 423 is connected to the accommodating space 501 of the box body 50 is, for example: Figure 4 As shown, a connecting channel 502 can be provided on the circumferential side wall of the box body 50 to connect the air inlet side of the air supply fan 423 with the accommodating space 501 of the box body 50. The specific manner in which the air inlet side of the air supply fan 423 is connected with the space 601 enclosed by the frame body 60 is, for example: Figure 4 It shows that the air inlet side of the air supply fan 423 is in communication with both the accommodating space 501 of the box body 50 and the space 601 enclosed by the frame body 60 . Figure 6 The figure shows that the air inlet side of the air supply fan 423 is connected to the space 601 enclosed by the frame 60. Figure 4 and Figure 6 As shown, a first air outlet channel 602 is provided in the frame 60, and a second air outlet channel 503 is provided on the circumferential side wall of the box body 50. The air inlet end of the first air outlet channel 602 is located on the inner periphery of the frame 60 and is connected to the space 601 enclosed by the frame 60. The air outlet end of the first air outlet channel 602 and the air inlet end of the second air outlet channel 503 are respectively located on the opposite surfaces of the frame 60 and the box body 50 and are connected; the air outlet end of the second air outlet channel 503 is located on the outer periphery of the box body 50 and is connected to the air inlet side of the air supply fan 423. The air flow direction in the space 601 enclosed by the frame 60 is as shown in FIG. Figure 6 The specific manner in which the air inlet side of the air supply fan 423 is connected to the accommodating space 501 of the box body 50 and the space 601 surrounded by the frame body 60 is as follows. Figure 4 As shown, on the basis of the above-mentioned specific method of connecting the air inlet side of the air supply fan 423 with the space 601 enclosed by the frame body 60, a connecting channel 502 can be opened in the circumferential side wall of the box body 50, and the air inlet end of the connecting channel 502 is located on the inner periphery of the box body 50 and is connected with the accommodating space 501 of the box body 50, and the air outlet end of the connecting channel 502 is connected with the second air outlet channel 503 and the air inlet side of the air supply fan 423.

[0066] Furthermore, in a specific embodiment, the air inlet side of the air supply fan 423 can be fixedly connected to the outer peripheral side wall of the box body 50 through a connecting cavity 424, and the connecting cavity 424 is used to transmit air from at least one of the accommodating space 501 of the box body 50 and the space 601 enclosed by the frame 60 to the air supply fan 423. The connecting cavity 501 is used to provide a mounting base for the air supply fan 423 and to supply air to the air supply fan 423. For example, Figure 4 As shown, the connecting cavity 424 is fixed to the outer peripheral side wall of the box body 50, and its internal space is connected to the air inlet side of the air supply fan 423 and the air outlet end of the connecting channel 502. Figure 6 As shown, the connecting cavity 424 is fixed to the outer peripheral side wall of the box body 50, and its internal space is communicated with the air inlet side of the air supply fan 423 and the air outlet end of the second air outlet channel 503 respectively.

[0067] As another technical solution, an embodiment of the present application further provides a head-up display device, including a backlight source and the above-mentioned cooling device provided in an embodiment of the present application.

[0068] The head-up display device provided in the embodiments of the present application, by employing the aforementioned cooling device provided in the embodiments of the present application, can improve the heat dissipation efficiency of the backlight source, thereby extending the service life of the backlight source and ensuring the display quality of the HUD. Accordingly, the head-up display device has all the advantages of the aforementioned cooling device, which will not be elaborated on here.

[0069] In some embodiments, the head-up display device further includes a housing. Figure 2 Taking the housing 70 shown as an example, the housing 70 is used to provide a housing space for components located above the display panel 20, the display panel 20, and at least a portion of at least a portion of the components of the image source 10. Furthermore, the cooling device and the backlight source 10 can be disposed within the housing 70 or outside the housing 70.

[0070] In some embodiments, as Figure 4 and Figure 6As shown, the head-up display device also includes a frame 60, as well as a display panel 20 and an optical component 30 serving as an image source. The frame 60 is disposed between the display panel 20 and the optical component 30. In this case, the heat dissipation structure 42 includes a plurality of fins 421 and an air supply fan 423. The condenser section 411b of each heat pipe 411 is disposed through the plurality of fins 421. The air supply fan 423 is configured to supply air to the plurality of fins 421. The air inlet side of the air supply fan 423 communicates with the space 601 enclosed by the frame 60 between the display panel 20 and the optical component 30. In this way, the air supply fan 423 can provide suction power to draw air out of the space 601 enclosed by the frame 60, and the air flows to the external environment through the heat dissipation channel 422 formed between each two adjacent fins 421. Thus, while the air supply fan 423 can be used to supply air to the multiple fins 421 to increase the air flow rate in the heat dissipation channel 422, the air in the space 601 enclosed by the frame 60 can be drawn out, thereby dissipating heat from the space 601 enclosed by the frame 60, thereby facilitating heat dissipation of the display panel 20 and the optical functional components 30 exposed to the space 601 enclosed by the frame 60. In particular, by dissipating heat from the space enclosed by the frame 60, i.e., by lowering the temperature of the space between the display panel 20 and the optical functional components 30, the temperature rise on the light-entering side of the display panel 20 can be effectively reduced, thereby significantly reducing or even eliminating the risk of the display panel 20 exceeding the required operating temperature or burning.

[0071] In some embodiments, as Figure 4 As shown, the head-up display device also includes a box body 50 and an optical functional component 30. The box body 50 is formed with a accommodating space 501 for accommodating the optical functional component 30. The optical functional component 30 is located on the light-emitting side of the backlight source 10; the heat dissipation structure 42 includes a plurality of fins 421 and an air supply fan 423, and the condensation pipe section 411b of each heat pipe 411 is arranged to pass through the plurality of fins 421; the air supply fan 423 is used to supply air to the plurality of fins 421; the air inlet side of the air supply fan 423 is connected to the accommodating space 501. In this way, the air supply fan 423 can provide exhaust power to draw out the air in the accommodating space 501 of the box body 50, and flow it to the external environment through the heat dissipation channel 422 formed between each adjacent fin 421, so that the air in the accommodating space 501 of the box body 50 can be drawn out on the basis of using the air supply fan 423 to supply air to multiple fins 421 to increase the air flow speed in the heat dissipation channel 422, so that the accommodating space 501 of the box body 50 can be cooled, which is beneficial to the heat dissipation of the optical functional component 30 of the image source located in the accommodating space 501.

[0072] Furthermore, in some embodiments, Figure 5As shown, the air supply fan 423 is located on the side of the circumferential side wall of the box body 50 away from the accommodating space 501, and the air inlet side of the air supply fan 423 is opposite to the circumferential side wall; Figure 4 As shown, a connecting channel 502 is provided in the circumferential side wall of the box body 50 , the inlet of the connecting channel 502 is communicated with the accommodating space 501 , and the outlet of the connecting channel 502 is communicated with the air inlet side of the air supply fan 423 .

[0073] It should be noted that the air inlet side of the air supply fan 423 can be connected to at least one of the accommodating space 501 of the box body 50 and the space 601 surrounded by the frame 60. On this basis, the specific manner in which the air inlet side of the air supply fan 423 is connected to the accommodating space of the box body 50 is, for example: Figure 4 As shown, a connecting channel 502 can be provided on the circumferential side wall of the box body 50 to connect the air inlet side of the air supply fan 423 with the accommodating space 501 of the box body 50. The specific manner in which the air inlet side of the air supply fan 423 is connected with the space 601 enclosed by the frame body 60 is, for example: Figure 4 It shows that the air inlet side of the air supply fan 423 is in communication with both the accommodating space 501 of the box body 50 and the space 601 enclosed by the frame body 60 . Figure 6 The figure shows that the air inlet side of the air supply fan 423 is connected to the space 601 enclosed by the frame 60. Figure 4 and Figure 6 As shown, a first air outlet channel 602 is provided in the frame 60, and a second air outlet channel 503 is provided on the circumferential side wall of the box body 50. The air inlet end of the first air outlet channel 602 is located on the inner periphery of the frame 60 and is connected to the space 601 enclosed by the frame 60. The air outlet end of the first air outlet channel 602 and the air inlet end of the second air outlet channel 503 are respectively located on the opposite surfaces of the frame 60 and the box body 50 and are connected; the air outlet end of the second air outlet channel 503 is located on the outer periphery of the box body 50 and is connected to the air inlet side of the air supply fan 423. The air flow direction in the space 601 enclosed by the frame 60 is as shown in FIG. Figure 6 The specific manner in which the air inlet side of the air supply fan 423 is connected to the accommodating space 501 of the box body 50 and the space 601 surrounded by the frame body 60 is as follows. Figure 4 As shown, on the basis of the above-mentioned specific method of connecting the air inlet side of the air supply fan 423 with the space 601 enclosed by the frame body 60, a connecting channel 502 can be opened in the circumferential side wall of the box body 50, and the air inlet end of the connecting channel 502 is located on the inner periphery of the box body 50 and is connected with the accommodating space 501 of the box body 50, and the air outlet end of the connecting channel 502 is connected with the second air outlet channel 503 and the air inlet side of the air supply fan 423.

[0074] Furthermore, in a specific embodiment, the air inlet side of the air supply fan 423 can be fixedly connected to the outer peripheral side wall of the box body 50 through a connecting cavity 424, and the connecting cavity 424 is used to transmit air from at least one of the accommodating space 501 of the box body 50 and the space 601 enclosed by the frame 60 to the air supply fan 423. The connecting cavity 501 is used to provide a mounting base for the air supply fan 423 and to supply air to the air supply fan 423. For example, Figure 4 As shown, the connecting cavity 424 is fixed to the outer peripheral side wall of the box body 50, and its internal space is connected to the air inlet side of the air supply fan 423 and the air outlet end of the connecting channel 502. Figure 6 As shown, the connecting cavity 424 is fixed to the outer peripheral side wall of the box body 50, and its internal space is communicated with the air inlet side of the air supply fan 423 and the air outlet end of the second air outlet channel 503 respectively.

[0075] As another technical solution, an embodiment of the present application further provides a vehicle, comprising the above-mentioned head-up display device provided in an embodiment of the present application.

[0076] The vehicle provided in the embodiment of the present application adopts the above-mentioned head-up display device provided in the embodiment of the present application. Accordingly, the vehicle has all the advantages of the cooling device 500 included in the above-mentioned head-up display device, which will not be described one by one here.

[0077] It is understood that the above embodiments are merely exemplary embodiments for illustrating the principles of the present application, and the present application is not limited thereto. Those skilled in the art may make various modifications and improvements without departing from the spirit and substance of the present application, and such modifications and improvements are also considered to be within the scope of protection of the present application.

Claims

1. A cooling device, applied to a head-up display device, characterized in that: The heat pipe structure includes a heat pipe structure and a heat dissipation structure, wherein the heat pipe structure includes at least one heat pipe, the heat pipe having an evaporation section and a condensation section. When the heat pipe is installed in the head-up display device, the evaporation section is located on the side of the backlight source away from the light emitting surface thereof, and is used to transfer heat to the condensation section along the axial direction of the heat pipe; the condensation section is located at a position farther away from the backlight source than the evaporation section. The heat dissipation structure is arranged at the location of the condensing pipe section and is used for conducting the heat generated by the condensing pipe section.

2. The cooling device according to claim 1, characterized in that The axial direction of the evaporation tube segment is parallel to the light emitting surface of the backlight source.

3. The cooling device according to claim 2, characterized in that The axial direction of the condensing pipe section forms an angle with the axial direction of the evaporating pipe section.

4. The cooling device according to claim 1, characterized in that There are multiple heat pipes, and the evaporation sections of the multiple heat pipes are located in the same plane parallel to the axial direction of the evaporation section and are distributed at intervals. The distances between the evaporation sections of the multiple heat pipes and the backlight source are the same.

5. The cooling device according to claim 1, characterized in that There are multiple heat pipes, and the condensing pipe sections of the multiple heat pipes are parallel to each other in their axial directions. The condensing pipe sections of the multiple heat pipes are distributed at intervals and staggered with each other.

6. The cooling device according to any one of claims 1 to 5, characterized in that: The heat pipe structure further includes a heat distribution component, which, when installed in the head-up display device, is located on a side of the backlight source away from its light emitting surface; At least one accommodating groove is formed on the surface of the heat distribution component opposite to the backlight source, and at least part of the evaporation tube section of each heat pipe is arranged in each accommodating groove in a one-to-one correspondence.

7. The cooling device according to claim 6, characterized in that The evaporation tube section is flush with a surface of the heat dissipation component opposite to the backlight source.

8. The cooling device according to any one of claims 1 to 5, characterized in that: The heat dissipation structure includes a plurality of fins, and the condensing pipe section of each heat pipe is arranged to pass through the plurality of fins.

9. The cooling device according to claim 8, characterized in that The plurality of fins are spaced apart along a first direction to form a heat dissipation channel between each two adjacent fins; the plane where each fin is located forms an angle with the first direction; the first direction is parallel to the axial direction of the condenser tube section.

10. The cooling device according to claim 8, characterized in that The heat dissipation structure further includes an air supply fan, and the air supply fan is used to supply air to the plurality of fins.

11. The cooling device according to claim 10, characterized in that When the air supply fan is installed on the head-up display device, the air inlet side of the air supply fan can be connected to the accommodating space of the box body for accommodating the optical functional parts of the image source, and / or be connected to the space enclosed by the frame between the display panel of the image source and the optical functional parts of the image source.

12. A head-up display device, characterized in that: The invention comprises a backlight source and a cooling device as claimed in any one of claims 1 to 11.

13. The head-up display device according to claim 12, characterized in that: Also includes a housing; The cooling device is located outside the housing, and the backlight source is located inside the housing; or, The cooling device and the backlight source are both located outside the housing; or, In the heat pipe structure of the cooling device, the evaporation pipe section of the heat pipe is located inside the shell, and the condensation pipe section of the heat pipe is located outside the shell; and the backlight source is located inside the shell.

14. The head-up display device according to claim 12, characterized in that: It also includes a frame, a display panel of an image source, and an optical functional component, wherein the frame is arranged between the display panel and the optical functional component; The heat dissipation structure includes multiple fins and an air supply fan, and the condensation pipe section of each heat pipe is arranged through the multiple fins; the air supply fan is used to supply air to the multiple fins; the air inlet side of the air supply fan is connected to the space enclosed by the frame between the display panel and the optical functional component.

15. The head-up display device according to claim 12, characterized in that: It also includes a box body and an optical functional component, wherein the box body is formed with an accommodating space for accommodating the optical functional component, and the optical functional component is located on the light emitting surface side of the backlight source; The heat dissipation structure includes a plurality of fins and an air supply fan, and the condensation pipe section of each heat pipe is arranged to pass through the plurality of fins; the air supply fan is used to supply air to the plurality of fins; and the air inlet side of the air supply fan is connected to the accommodating space.

16. The head-up display device according to claim 15, characterized in that: The air supply fan is located on a side of the circumferential side wall of the box body away from the accommodating space, and the air inlet side of the air supply fan is opposite to the circumferential side wall; A connecting channel is provided in the circumferential side wall of the box body, an inlet of the connecting channel is communicated with the accommodating space, and an outlet of the connecting channel is communicated with the air inlet side of the air supply fan.

17. A vehicle, characterized in that: include: A head-up display device according to any one of claims 12 to 16.

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