Liquid cooling structure and heat dissipation device of vehicle display system

Abstract

The invention provides a liquid cooling structure and a heat dissipation device of a vehicle display system, and the liquid cooling structure is arranged in a heat dissipation supporting space close to the bottom surface of a backlight assembly, and specifically comprises a diverter; the water inlet end and the water outlet end of each circulating liquid cooling pipe are connected with the flow divider; and at least one part of each circulating liquid cooling pipe adapts to the shape of a bottom shell of the backlight assembly and is close to the bottom shell of the backlight assembly. According to the technical scheme provided by the invention, through the arrangement of the multiple circulating liquid cooling pipes, the heat dissipation requirement of the high-power-consumption backlight assembly can be met, the heat dissipation efficiency of the liquid cooling structure is improved while the heat dissipation requirement is met, and the liquid cooling structure has a promotable value.

Description

Technical Field

[0001] The present application relates to the field of display technology, and in particular to a liquid cooling structure and a heat dissipation device for a vehicle display system. Background Art

[0002] In some application scenarios, in order to provide users with better display visual effects, it is often necessary to provide a large-scale display interface, which requires the setting of a large-area backlight component and the large-area LED devices therein to provide light sources. Since the large-area LED device setting easily causes the backlight power consumption to be too large, the stacking temperature exceeds the junction temperature of the LED device, damaging the LED device and other electronic components. In this case, the heat dissipation efficiency of traditional passive heat dissipation methods such as heat sink fins is insufficient, and it is difficult to reduce the backlight temperature to a usable temperature, so a liquid cooling structure is used to actively dissipate heat for the backlight component. Summary of the invention

[0003] In view of this, the present invention provides a liquid cooling structure and a heat dissipation device for a vehicle display system to solve the problem that the heat dissipation efficiency of traditional passive heat dissipation methods such as heat dissipation fins is insufficient and it is difficult to reduce the backlight temperature to a usable temperature.

[0004] The present invention provides a liquid cooling structure, which is arranged in a heat dissipation support space close to the bottom surface of a backlight assembly, and includes:

[0005] shunt;

[0006] At least two circulating liquid cooling pipes, the water inlet and the water outlet of each circulating liquid cooling pipe are connected to the diverter;

[0007] At least a portion of each circulating liquid cooling pipe is adapted to the shape of the bottom shell of the backlight assembly and is close to the bottom shell of the backlight assembly.

[0008] The first preset time is based on the same inventive concept, and the present invention also provides a heat dissipation device for a vehicle display system, the vehicle display system comprising a backlight assembly;

[0009] The heat dissipation device is arranged in the heat dissipation support area of ​​the bottom surface of the backlight bottom shell of the backlight assembly, and comprises the liquid cooling structure of the invention.

[0010] Compared with the prior art, the liquid cooling structure and the heat dissipation device of the vehicle display system provided by the present invention have the following beneficial effects:

[0011] The liquid cooling structure provided by the present invention is arranged in the heat dissipation support space near the bottom surface of the backlight component, and includes: a diverter; at least two circulating liquid cooling tubes, the water inlet end and the water outlet end of each circulating liquid cooling tube are connected to the diverter; at least a part of each circulating liquid cooling tube is adapted to the bottom shell shape of the backlight component and is close to the bottom shell of the backlight component. The liquid cooling structure can actively provide heat dissipation support for the backlight component with large power consumption and large coverage area. Through the arrangement of multiple circulating liquid cooling tubes, since each circulating liquid cooling tube is responsible for a heat dissipation support area in the heat dissipation support space, the coolant flow path of a single circulating liquid cooling tube is short, so that the temperature difference between the coolant flowing into the single circulating liquid cooling tube and flowing out of the single circulating liquid cooling tube is reduced, the working efficiency of the single circulating liquid cooling tube and the heat dissipation efficiency of the liquid cooling structure as a whole are improved, and the heat dissipation requirements of the backlight component with large power consumption can be met. While meeting the heat dissipation requirements, the heat dissipation efficiency of the liquid cooling structure is improved, and the value of promotion is available. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Other features, objects and advantages of the present disclosure will become more apparent from a reading of the detailed description of non-limiting embodiments made with reference to the following accompanying drawings.

[0013] Figure 1 Shown is a schematic cross-sectional structure diagram of a liquid cooling structure provided by the present invention.

[0014] Figure 2 Shown is a schematic cross-sectional structure diagram of another liquid cooling structure provided by the present invention.

[0015] Figure 3 Shown is a schematic diagram of the heat dissipation area corresponding to a single circulating liquid cooling tube provided by the present invention.

[0016] Figure 4 Shown is a schematic diagram of the superposition of heat dissipation areas corresponding to a plurality of circulating liquid cooling tubes provided by the present invention.

[0017] Figure 5 Shown is a schematic cross-sectional structure diagram of a liquid cooling structure provided by the present invention.

[0018] Figure 6 Shown is a schematic cross-sectional structure diagram of another liquid cooling structure provided by the present invention.

[0019] Figure 7 Shown is a structural schematic diagram of a vehicle display system provided by the present invention. DETAILED DESCRIPTION

[0020] The following describes the embodiments of the present disclosure through specific examples, and those skilled in the art can easily understand other advantages and effects of the present disclosure from the contents disclosed in the present disclosure. The present disclosure can also be implemented or applied through other different specific embodiments, and the details in the present disclosure can also be modified or changed in various ways according to different viewpoints and application systems without departing from the spirit of the present disclosure. It should be noted that the embodiments in the present disclosure and the features in the embodiments can be combined with each other without conflict.

[0021] The following is a detailed description of the embodiments of the present disclosure with reference to the accompanying drawings so that those skilled in the art can easily implement the present disclosure. The present disclosure can be embodied in many different forms and is not limited to the embodiments described herein.

[0022] In the representations of the present disclosure, the reference terms "one embodiment", "some embodiments", "examples", "specific examples", or "some examples" and the like mean that the specific features, structures, materials, or characteristics represented in conjunction with the embodiment or example are included in at least one embodiment or example of the present disclosure. Moreover, the specific features, structures, materials, or characteristics represented may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine different embodiments or examples represented in the present disclosure and the features of different embodiments or examples, unless they are mutually contradictory.

[0023] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the representation of the present disclosure, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0024] In order to clearly describe the present disclosure, components not related to the description are omitted, and the same reference numerals are given to the same or similar components throughout the specification.

[0025] Throughout the specification, when a device is said to be "connected" to another device, this includes not only the case of "direct connection" but also the case of "indirect connection" by placing other elements therebetween. In addition, when a device is said to "include" a certain component, unless otherwise stated, it does not exclude other components, but means that other components may be included.

[0026] When a device is said to be "on" another device, it may be directly on the other device, but there may also be other devices between it. In contrast, when a device is said to be "directly" on another device, there are no other devices between it.

[0027] Although the terms first, second, etc. are used to represent various elements in some examples, these elements should not be limited by these terms. These terms are only used to distinguish one element from another element. For example, the first interface and the second interface, etc. are represented. Moreover, as used in this article, the singular forms "one", "one" and "the" are intended to also include plural forms, unless there is an opposite indication in the context. It should be further understood that the terms "comprising" and "including" indicate the existence of features, steps, operations, elements, components, projects, kinds, and / or groups, but do not exclude the existence, occurrence or addition of one or more other features, steps, operations, elements, components, projects, kinds, and / or groups. The terms "or" and "and / or" used herein are interpreted as inclusive, or mean any one or any combination. Therefore, "A, B or C" or "A, B and / or C" means "any of the following: A; B; C; A and B; A and C; B and C; A, B and C". Only when the combination of elements, functions, steps or operations is inherently mutually exclusive in some way, will there be an exception to this definition.

[0028] The technical terms used herein are only used to refer to specific embodiments and are not intended to limit the present disclosure. The singular form used herein also includes the plural form unless the sentence clearly indicates the contrary meaning. The meaning of "including" used in the specification is to specify specific characteristics, regions, integers, steps, operations, elements and / or components, and does not exclude the existence or addition of other characteristics, regions, integers, steps, operations, elements and / or components.

[0029] Although not defined differently, all terms, including technical and scientific terms used herein, have the same meaning as those generally understood by those skilled in the art to which the present disclosure belongs. Terms defined in commonly used dictionaries are additionally interpreted as having meanings consistent with the content of relevant technical literature and current disclosures, and unless defined, shall not be overly interpreted as ideal or very formal meanings.

[0030] In order to overcome the problems raised in the background technology, the present disclosure provides a liquid cooling structure and a preparation method thereof, and a display device, which can meet the heat dissipation requirements of a high-power backlight assembly by setting up multiple circulating liquid cooling tubes.

[0031] Specifically, in some embodiments of the present disclosure, Figure 1 A schematic diagram of a cross-sectional structure of a liquid cooling structure is provided. Figure 1As shown in the figure, the liquid cooling structure is arranged in the heat dissipation support space 001 near the bottom surface of the backlight assembly, wherein the edge of the heat dissipation support space 001 corresponds to the bottom surface contour of the backlight assembly. The liquid cooling structure may specifically include a diverter 200 and at least two circulating liquid cooling pipes 100. The water inlet end 100a and the water outlet end 100b of each circulating liquid cooling pipe 100 are connected to the diverter 200. Figure 1 As shown, since each circulating liquid cooling tube 100 is responsible for a heat dissipation support area in the heat dissipation support space 001, the coolant flow path of a single circulating liquid cooling tube 100 is shorter, so that the temperature difference of the coolant when flowing into the single circulating liquid cooling tube 100 and when flowing out of the single circulating liquid cooling tube 100 is in a smaller range, thereby improving the working efficiency of the single circulating liquid cooling tube 100 and the overall heat dissipation efficiency of the liquid cooling structure.

[0032] like Figure 1 As shown, at least a portion of each circulating liquid cooling tube 100 is adapted to the shape of the bottom shell of the backlight assembly and is close to the bottom shell of the backlight assembly. It is understandable that in some embodiments of the present disclosure, the backlight assembly provides a light source for the head-up display of the entire front windshield area of ​​the vehicle, and the backlight area that needs to be covered is relatively large. In order to provide sufficient heat dissipation support for the backlight assembly, the circulating liquid cooling tube 100 can be adapted to the shape of the bottom shell of the backlight assembly and be as close to the bottom shell of the backlight assembly as possible. Those skilled in the art can also choose other suitable settings according to actual needs, which are not limited here.

[0033] In the above embodiment, it can be understood that each circulating liquid cooling tube 100 can correspond to a heat dissipation area. Figure 3 A schematic diagram showing the heat dissipation area corresponding to a single circulating liquid cooling tube 100 is shown: Figure 3 As shown, the projection of the heat dissipation area corresponding to a single circulating liquid cooling tube 100 on the bottom surface of the backlight assembly is shown as the shadow area 101, and the shadow area 101 is distributed near the circulating liquid cooling tube 100, and radiates to a certain range around the circulating liquid cooling tube 100; the distribution shape of the shadow area 101 may be similar to the setting shape of the circulating liquid cooling tube 100, that is, the distribution shape of the heat dissipation area corresponding to the circulating liquid cooling tube 100 may be similar to the setting shape of the circulating liquid cooling tube 100, which is not limited here.

[0034] In the above embodiment, further, Figure 4 An exemplary schematic diagram of the superposition of heat dissipation areas corresponding to a plurality of circulating liquid cooling tubes 100 is shown: Figure 4As shown, the projection of the heat dissipation effect area corresponding to the two adjacent circulating liquid cooling tubes 100 at the setting position on the bottom surface of the backlight assembly, that is, the corresponding shadow areas 101a and 101b, have a partial overlapping area. In other embodiments, the heat dissipation effect areas corresponding to the two adjacent circulating liquid cooling tubes 100 at the setting position also do not intersect with each other and have at least a portion of common edges. In some embodiments of the present disclosure, no matter how the heat dissipation effect areas of the multiple circulating liquid cooling tubes 100 are set, their superposition combination can achieve the ideal heat dissipation effect by covering the entire area of ​​the bottom surface of the backlight assembly. In other embodiments of the present disclosure, considering that the bottom shell of the backlight module needs to be able to support the backlight module and provide a stable setting space for the backlight module, a plurality of structural support members may be set at the edge of the bottom surface of the backlight module, and the setting area of ​​these structural support members does not have a heat dissipation requirement; in order to provide targeted heat dissipation support to the backlight assembly, the heat dissipation effect areas corresponding to all circulating liquid cooling tubes 100 can also be set to cover the heat dissipation requirement area corresponding to the bottom surface of the backlight assembly, which is not limited here.

[0035] In some embodiments of the present disclosure, Figure 1 As shown, this liquid cooling structure may further include a controller (not shown) and a switch valve 300, each of which corresponds to one or more circulating liquid cooling pipes 100; the switch valve 300 is electrically connected to the controller and is used to conduct and shut down the circulating liquid cooling pipe 100 according to the control instructions of the controller. Figure 1 In the liquid cooling structure shown, one end of the circulating liquid cooling tube 100 is connected to the diverter 200 through the switch valve 300, and the other end of the circulating liquid cooling tube 100 is directly connected to the diverter 200, that is, the switch valve 300 is arranged at the diverter 200 to realize the conduction control between the diverter 200 and the circulating liquid cooling tube 100. In some embodiments, the switch valve 300 can be realized by an electrically controlled solenoid valve.

[0036] In some embodiments of the present disclosure, Figure 2 A cross-sectional schematic diagram of another liquid cooling structure is provided. Figure 2 As shown in the figure, the switch valve 300 can also be set at the circulating liquid cooling pipe 100. In some examples, a switch valve 300 can be set for each circulating liquid cooling pipe 100, that is, each switch valve 300 can independently control the conduction and operation of the circulating liquid cooling pipe 100; in other examples, such as Figure 2As shown, a single switch valve 300 can control two circulating liquid cooling pipes 100, that is, each switch valve 300 can simultaneously control the conduction and operation of multiple circulating liquid cooling pipes 100. It can be understood that the more switch valves 300 are set, the more precise the control of a single circulating liquid cooling pipe 100 will be. Correspondingly, the controller's control of the switch valve 300 and the electrical connection between the switch valve 300 and the controller will be more complex. For those skilled in the art, the number of circulating liquid cooling pipes 100 controlled by a single switch valve 300 can be set according to actual needs, and no limitation is made here. In order to achieve zoned temperature control, it is only necessary to open the switch valve 300 in the area that needs to be cooled. In addition, single-area cooling is more precise and the cooling effect will be better.

[0037] In some embodiments of the present disclosure, Figure 5 A schematic diagram of a cross-sectional structure of a liquid cooling structure is shown. Figure 5 As shown, the liquid cooling structure may further include a temperature sensor 500, wherein the temperature sensor 500 may be disposed in the heat dissipation support space and electrically connected to the controller, and each temperature sensor 500 corresponds to one or more circulating liquid cooling tubes 100. In some embodiments, as Figure 5 As shown, the temperature sensor 500 may correspond to two circulating liquid cooling pipes 100 adjacent thereto.

[0038] In the above embodiment, when the real-time detected temperature of the temperature sensor 500 is greater than the first preset threshold, the controller can control the switch valve 300 of one or more circulating liquid cooling tubes 100 corresponding to the temperature sensor 500 to perform a conduction operation. It can be understood that when the real-time detected temperature of the temperature sensor 500 is greater than the first preset threshold, it means that the location of the setting area of ​​the temperature sensor 500 has a heat dissipation requirement and needs to be dissipated. At this time, the controller can control the switch valve 300 of one or more circulating liquid cooling tubes 100 corresponding to the temperature sensor 500 to perform a conduction operation, so that the coolant flows through the diverter 200 through the one or more circulating liquid cooling tubes 100 corresponding to the temperature sensor 500, thereby providing a heat dissipation function.

[0039] In some embodiments of the present disclosure, Figure 6 A schematic diagram of a cross-sectional structure of a liquid cooling structure is shown. Figure 6As shown, the liquid cooling structure may further include a light sensor 600, wherein the light sensor 600 may be disposed on a structural member of the backlight assembly and electrically connected to the controller, and each light sensor 600 corresponds to one or more circulating liquid cooling tubes 100. In some embodiments, the light sensor may be disposed on a sub-control flexible printed circuit (FPC) of the backlight assembly; in other embodiments, the light sensor may be disposed on a backlight die-casting of the backlight assembly. In some embodiments, as Figure 6 As shown, the temperature sensor 600 may correspond to two adjacent circulating liquid cooling pipes 100 .

[0040] In the above embodiment, when the real-time detected light intensity of the light sensor 600 is greater than the second preset threshold, the controller can control the switch valve 300 of one or more circulating liquid cooling tubes 100 corresponding to the light sensor 600 to perform a conduction operation. It can be understood that when the real-time detected light intensity of the light sensor 600 is greater than the second preset threshold, it means that the luminous intensity of the light-emitting unit in the backlight assembly corresponding to the setting area of ​​the light sensor 600 has reached the second preset threshold, and the corresponding liquid cooling structure is required to provide heat dissipation support. At this time, the controller can control the switch valve 300 of one or more circulating liquid cooling tubes 100 corresponding to the light sensor 600 to perform a conduction operation, so that the coolant flows through the diverter 200 through the one or more circulating liquid cooling tubes 100 corresponding to the light sensor 600, and the heat dissipation function is provided. In some embodiments of the present disclosure, the light sensor 600 can be set selectively with the temperature sensor 500 provided in the above embodiments, or can be set simultaneously in the liquid cooling structure provided in the present disclosure, which is not limited here.

[0041] In some embodiments of the present disclosure, further, considering that the heat accumulation caused by the self-luminescence of the light-emitting unit in the backlight assembly is not obvious when it just starts working, heat dissipation support is not yet required. In order to further improve the control accuracy of the liquid cooling structure, the controller can be configured to control the switch valve 300 of one or more circulating liquid cooling tubes 100 corresponding to the light sensor 600 to conduct at intervals of preset time when the real-time detected light intensity of the light sensor 600 is greater than the second preset threshold. Those skilled in the art can control the preset time according to the actual use of the backlight assembly, so that the circulating liquid cooling tube 100 can be turned on and off more accurately while meeting the heat dissipation requirements.

[0042] In some embodiments of the present disclosure, further, considering that the light-emitting unit in the backlight assembly may provide intermittent regional backlight light sources due to changes in the display area, the need for heat dissipation support will only occur when the backlight light source is provided for a long time. In order to further improve the control accuracy of the liquid cooling structure, the controller can be configured to control the switch valve 300 of one or more circulating liquid cooling tubes 100 corresponding to the light sensor 600 to conduct when the real-time detected light intensity of the light sensor 600 is greater than the second preset threshold and the duration is greater than the first preset time. Those skilled in the art can set the second preset threshold and the first preset time according to the actual use of the backlight assembly, so that the circulating liquid cooling tube 100 can more accurately achieve the control of conduction and closing while meeting the heat dissipation requirements.

[0043] In some embodiments of the present disclosure, further, considering that whether the light-emitting unit in the backlight assembly emits light is controlled by the backlight control terminal of the backlight assembly, in order to further improve the control accuracy of the liquid cooling structure, the controller can be configured to be electrically connected to the backlight control terminal of the backlight assembly, and according to the distribution of the light-emitting area provided by the backlight control terminal, the switch valves of one or more circulating liquid cooling pipes corresponding to the light-emitting area are controlled to conduct. Through the linkage setting of the controller and the backlight control section, the light-emitting area of ​​the backlight assembly can be accurately obtained, and there is no need to set up an additional sensor structure in the liquid cooling structure for monitoring the light-emitting condition and heat dissipation requirements.

[0044] In some embodiments of the present disclosure, Figures 2 to 6 As shown, the circulating liquid cooling tube 100 can be set to fit the bottom shell shape of the backlight assembly and can be arranged in an L shape. In other embodiments of the present disclosure, the circulating liquid cooling tube 100 can also be arranged in a serpentine shape to adapt to the application scenario of a large-area backlight assembly. Those skilled in the art can select a suitable setting structure of the circulating liquid cooling tube 100 according to actual needs, and no limitation is made here.

[0045] In some embodiments of the present disclosure, the circulating liquid cooling tube 100 is made of copper alloy. It is understandable that using copper alloy with high thermal conductivity as the preparation material of the circulating liquid cooling tube 100 can improve the heat conduction efficiency and heat dissipation effect of the circulating liquid cooling tube 100. Those skilled in the art can also select a suitable preparation material of the circulating liquid cooling tube 100 according to actual needs, which is not limited here.

[0046] In some embodiments of the present disclosure, for the circulating liquid cooling tube 100 disposed in the heat dissipation support space 001, in order to ensure that the circulating liquid cooling tube 100 is tightly attached to the bottom shell of the backlight assembly for stable installation, at least a portion of the circulating liquid cooling tube can be connected to the bottom shell of the backlight assembly by welding and / or gluing. In other embodiments of the present disclosure, other connecting structural members can also be introduced to connect at least a portion of the circulating liquid cooling tube to the bottom shell of the backlight assembly through a connecting member. Those skilled in the art can select a suitable installation method for the circulating liquid cooling tube according to actual needs, which is not limited here.

[0047] In some embodiments of the present invention, a heat dissipation device for a vehicle display system is also provided, including the liquid cooling structure in the above embodiment, and the heat dissipation device is arranged in the heat dissipation support area 001 on the bottom surface of the backlight bottom shell of the backlight assembly 710. It can be understood that the heat dissipation device for a vehicle display system provided by the embodiment of the present invention has the corresponding beneficial effects of the liquid cooling structure provided by the embodiment of the present invention, which will not be described in detail here. Specifically, the present invention can be applied to Figure 7 The vehicle display system shown. Figure 7 As shown, in order to improve the display effect of the vehicle display system, a panoramic image head-up display device can be selected as a component of the vehicle display system. The panoramic image head-up display device includes a backlight component 710 and a head-up display area 720. The light source provided by the backlight component 710 enables the head-up display content to be presented in the head-up display area 720. Since the panoramic image head-up display device provides a visual interface for all drivers and passengers through the entire front windshield, higher brightness and contrast are required. Therefore, the backlight component required has the characteristics of large area, high power consumption, and high heat generation, and the corresponding heat dissipation requirements also increase accordingly. In some embodiments of the present disclosure, the backlight component of the vehicle display system can be heat-dissipated based on the liquid cooling structure provided in the aforementioned embodiments.

[0048] In some embodiments of the present disclosure, when the vehicle equipped with the vehicle display system is a new energy vehicle, the liquid cooling structure provided in the above embodiments can be connected to the liquid cooling system of the vehicle to achieve the circulation of the coolant in the liquid cooling system of the whole vehicle. In other embodiments of the present disclosure, when the vehicle equipped with the vehicle display system is a fuel vehicle, the liquid cooling structure provided in the above embodiments can be connected to the air conditioning circulation system of the vehicle to achieve the circulation of the coolant in the liquid cooling system of the whole vehicle, which is not limited here.

[0049] It can be seen from the above embodiments that the display module and display device provided by the present invention achieve at least the following beneficial effects:

[0050] The liquid cooling structure provided by the present invention is arranged in the heat dissipation support space near the bottom surface of the backlight component, and includes: a diverter; at least two circulating liquid cooling tubes, the water inlet end and the water outlet end of each circulating liquid cooling tube are connected to the diverter; at least a part of each circulating liquid cooling tube is adapted to the bottom shell shape of the backlight component and is close to the bottom shell of the backlight component. The liquid cooling structure can actively provide heat dissipation support for the backlight component with high power consumption and large coverage area. Through the arrangement of multiple circulating liquid cooling tubes, since each circulating liquid cooling tube is responsible for a heat dissipation support area in the heat dissipation support space, the coolant flow path of a single circulating liquid cooling tube is short, so that the temperature difference between the coolant flowing into the single circulating liquid cooling tube and flowing out of the single circulating liquid cooling tube is reduced, the working efficiency of the single circulating liquid cooling tube and the heat dissipation efficiency of the liquid cooling structure as a whole are improved, the heat dissipation requirements of the high power consumption backlight component can be met, and the heat dissipation efficiency of the liquid cooling structure is improved while meeting the heat dissipation requirements, and it has a popularizable value. The above content is a further detailed description of the present disclosure in combination with specific preferred embodiments, and it cannot be determined that the specific implementation of the present disclosure is limited to these descriptions. For ordinary technicians in the technical field to which the present disclosure belongs, they can make some simple deductions or substitutions without departing from the concept of the present disclosure, which should be regarded as belonging to the protection scope of the present disclosure.

Claims

1. A liquid cooling structure, arranged in a heat dissipation support space near the bottom surface of a backlight assembly, characterized in that: The liquid cooling structure comprises: shunt; At least two circulating liquid cooling pipes, the water inlet and the water outlet of each circulating liquid cooling pipe are connected to the diverter; At least a portion of each of the circulating liquid cooling pipes is adapted to the shape of the bottom shell of the backlight assembly and is close to the bottom shell of the backlight assembly.

2. The liquid cooling structure according to claim 1, characterized in that: Each of the circulating liquid cooling tubes corresponds to a heat dissipation area; The heat dissipation areas corresponding to all the circulating liquid cooling tubes cover the bottom surface of the backlight assembly; or The heat dissipation action areas corresponding to all the circulating liquid cooling tubes cover the heat dissipation requirement areas corresponding to the bottom surface of the backlight assembly.

3. The liquid cooling structure according to claim 1, characterized in that: include: Controller; A switch valve, at least one end of each of the circulating liquid cooling pipes is connected to the diverter through the switch valve, and each of the switch valves corresponds to one or more circulating liquid cooling pipes; The switch valve is electrically connected to the controller and is used to perform on-off operations and off-off operations on the circulating liquid cooling pipe according to control instructions of the controller.

4. The liquid cooling structure according to claim 3, characterized in that: The switch valve is arranged on the diverter and / or the circulating liquid cooling pipe.

5. The liquid cooling structure according to claim 3, characterized in that: include: A temperature sensor is disposed in the heat dissipation support space and electrically connected to the controller, each of the temperature sensors corresponding to one or more circulating liquid cooling tubes; When the real-time detected temperature of the temperature sensor is greater than a first preset threshold, the controller controls the switch valves of one or more circulating liquid cooling pipes corresponding to the temperature sensor to perform a conduction operation.

6. The liquid cooling structure according to claim 3 or 4, characterized in that: include: A light sensor is disposed on a structural member of the backlight assembly and electrically connected to the controller, each of the light sensors corresponding to one or more circulating liquid cooling tubes; When the real-time detected light intensity of the light sensor is greater than a second preset threshold, the controller controls the switch valves of one or more circulating liquid cooling pipes corresponding to the light sensor to perform a conduction operation; or The controller controls the switch valves of one or more circulating liquid cooling pipes corresponding to the light sensor to perform conduction operations at preset time intervals.

7. The liquid cooling structure according to claim 6, characterized in that: When the real-time detected light intensity of the light sensor is greater than the second preset threshold and the duration is greater than the first preset time, the controller controls the switch valves of one or more circulating liquid cooling pipes corresponding to the light sensor to perform conduction operations.

8. The liquid cooling structure according to claim 3, characterized in that: The controller is electrically connected to a backlight control terminal of the backlight assembly; According to the distribution of the light-emitting areas provided by the backlight control end, the controller controls the switch valves of one or more circulating liquid cooling tubes corresponding to the light-emitting areas to perform conduction operations.

9. The liquid cooling structure according to claim 1, characterized in that: The circulating liquid cooling tubes are arranged in an L shape; or The circulating liquid cooling pipes are arranged in a serpentine shape.

10. The liquid cooling structure according to claim 1, characterized in that: The circulating liquid cooling tube is made of copper alloy.

11. The liquid cooling structure according to claim 1, characterized in that: At least a portion of the circulating liquid cooling pipe is connected to the bottom housing of the backlight assembly by welding and / or gluing; and / or At least a portion of the circulating liquid cooling pipe is connected to the bottom shell of the backlight assembly through a connecting piece.

12. A heat dissipation device for a vehicle display system, characterized in that: The vehicle display system includes a backlight assembly; The heat dissipation device is arranged in a heat dissipation support area on the bottom surface of the backlight bottom shell of the backlight assembly, and includes a liquid cooling structure as described in any one of claims 1 to 11.

13. The heat dissipation device according to claim 12, characterized in that: The liquid cooling structure is connected to the liquid cooling system of the vehicle; or The liquid cooling structure is connected to the air conditioning circulation system of the vehicle.

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