Heat dissipation module and vehicle-mounted display device comprising same

Abstract

The utility model provides a kind of heat dissipation module and the vehicle-mounted display device comprising it, and the heat dissipation module comprises first fan assembly, second fan assembly and isolation frame, the first fan assembly has first support ring and first leaf group being annularly arranged at the periphery of the first support ring;The second fan assembly has second support ring and second leaf group being annularly arranged in the periphery of the second support ring;The isolation frame has annular isolation sleeve, on the radial direction of the annular isolation sleeve, the second support ring is sleeved on the inner side of the annular isolation sleeve, and the first support ring is sleeved on the outer side of the annular isolation sleeve;Wherein, a plurality of mounting through holes are provided on the annular isolation sleeve, the plurality of mounting through holes are annularly arranged, a steering gear wheel is movably connected in each mounting through hole, and the steering gear wheel is respectively drivingly connected with the first support ring and the second support ring.

Description

Technical Field

[0001] This utility model relates to the field of display, and in particular to a heat dissipation module and an in-vehicle display device including the same. Background Technology

[0002] With the development of display technology, display modules have been widely used in various products, such as automobiles. Taking low-temperature polycrystalline silicon liquid crystal display modules (LTPS-LCD) as automotive center console / instrument displays as an example, they can clearly and accurately display parameters such as mileage, speed, and fuel level, gradually replacing traditional mechanical car dashboards. They can also integrate more functions and information such as vehicle status monitoring and driver assistance system prompts.

[0003] In actual use, the driving circuit inside the display module generates a certain amount of heat when operating at high frequency. In order to meet the visibility requirements under strong light so that drivers can understand the vehicle status information at any time to ensure safe driving, the backlight module used by the display module needs to provide a higher brightness backlight, which will increase the power of the backlight module accordingly, further aggravating the heat generation of the circuit. Since the interior space of the car where the central control display screen is located is limited, the airflow speed behind the display module is slow, and the aforementioned heat cannot be dissipated in time. Prolonged high temperature can cause damage or potential hazards to the driving circuit inside the display module, affecting its use. Utility Model Content

[0004] The purpose of this utility model is to provide a heat dissipation module and an in-vehicle display device including the same, so as to solve the above-mentioned technical problems.

[0005] To achieve the above objectives, this utility model proposes a heat dissipation module, which includes a first fan assembly, a second fan assembly, and an isolation frame. The first fan assembly has a first support ring and a first fan blade assembly arranged around the periphery of the first support ring. The second fan assembly has a second support ring and a second fan blade assembly arranged around the inner periphery of the second support ring. The isolation frame has an annular isolation sleeve. In the radial direction of the annular isolation sleeve, the second support ring is sleeved on the inner side of the annular isolation sleeve, and the first support ring is sleeved on the outer side of the annular isolation sleeve. The annular isolation sleeve is provided with a plurality of mounting through holes arranged in a ring. Each mounting through hole is movably connected to a steering gear, which respectively engages with the first support ring and the second support ring.

[0006] As an optional technical solution, the heat dissipation module also includes a heat dissipation housing with a receiving slot that covers and accommodates the first fan assembly, the second fan assembly, and the isolation frame.

[0007] As an optional technical solution, the bottom of the receiving groove is provided with a hollow support, and a motor is fixedly connected to the center of the hollow support. The motor is also connected to the second fan blade assembly.

[0008] As an optional technical solution, the annular isolation sleeve has a first thickness in the axial direction, and the first support ring has a second thickness, wherein the first thickness is not less than the second thickness.

[0009] As an optional technical solution, the isolation frame also includes an arc-shaped guide ring. The annular isolation sleeve has a first end along its axial direction. The arc-shaped guide ring is connected to the first end and extends arc-shaped from the first end to partially cover the first fan blade assembly.

[0010] As an optional technical solution, the heat dissipation module also includes a heat dissipation shell with a receiving groove. The bottom of the receiving groove is provided with a hollow support. The annular isolation sleeve has a second end along its axial direction that is opposite to the first end. The second end is fixedly connected to the hollow support.

[0011] As an optional technical solution, the first support ring has an inner surface corresponding to the annular isolation sleeve, and a plurality of meshing internal gear teeth are provided on the inner surface, and the plurality of meshing internal gear teeth are arranged in an annular arrangement along the inner surface; the second support ring has an outer surface corresponding to the annular isolation sleeve, and a plurality of driving external gear teeth are provided on the outer surface, and the plurality of driving external gears and the plurality of meshing internal gears respectively mesh with the steering gear.

[0012] In addition, this utility model also proposes an in-vehicle display device, which includes a display module, a housing, and a heat dissipation module as described above. The housing has a bottom plate and a side plate connected to each other. The bottom plate and the side plate form an accommodating space. The display module is located in the accommodating space, and the display surface of the display module is opposite to the bottom plate. The heat dissipation module is fixedly connected to the bottom plate.

[0013] As an optional technical solution, the base plate has a through hole corresponding to the heat dissipation module, the heat dissipation module covers the through hole, the isolation frame also includes an arc-shaped guide ring, the annular isolation sleeve has a first end along its axial direction, the arc-shaped guide ring is connected to the first end, and in the thickness direction of the vehicle display device, there is a gap between the arc-shaped guide ring of the heat dissipation module and the backlight module.

[0014] As an optional technical solution, the vehicle display device includes multiple heat dissipation modules, which are symmetrically connected to the base plate.

[0015] This utility model provides a heat dissipation module and an in-vehicle display device including the same. A first fan assembly, an isolation frame, and a second fan assembly are sequentially sleeved and driven together along the radial direction of the isolation frame. When the heat dissipation module is working, the first fan assembly and the second fan assembly rotate in opposite directions. One of the first fan assembly and the second fan assembly introduces external airflow into the inside of the display module, while the other of the first fan assembly and the second fan assembly guides the internal airflow of the display module to the outside, thereby increasing the airflow speed inside the in-vehicle display device. This allows for the rapid removal of internal hot airflow, thereby improving the heat dissipation effect. Furthermore, the heat dissipation module is relatively thin, which can effectively save installation space inside the car. Attached Figure Description

[0016] The specific embodiments of this utility model will be further described in detail below with reference to the accompanying drawings.

[0017] Figure 1 This is a schematic diagram of the vehicle-mounted display device in this utility model;

[0018] Figure 2 This is a structural schematic diagram of the vehicle-mounted display device of this utility model from another perspective;

[0019] Figure 3 This is a schematic diagram of the heat dissipation module in this utility model;

[0020] Figure 4 This is a structural schematic diagram of the heat dissipation module in this utility model from another perspective;

[0021] Figure 5 This is a schematic diagram of the heat dissipation shell of the heat dissipation module in this utility model;

[0022] Figure 6 This is a schematic diagram of the isolation frame of the heat dissipation module in this utility model;

[0023] Figure 7 This is a schematic diagram of the isolation frame of the heat dissipation module in this utility model from another perspective;

[0024] Figure 8 for Figure 7 A magnified view of the structure at point A in the middle circle;

[0025] Figure 9 This is a schematic diagram of the structure of the first fan assembly of the heat dissipation module in this utility model;

[0026] Figure 10 for Figure 9 A magnified view of the structure at point B in the middle circle;

[0027] Figure 11 This is a schematic diagram of the structure of the second fan assembly of the heat dissipation module in this utility model;

[0028] Figure 12 for Figure 11 A magnified view of the structure at point C in the middle circle. Detailed Implementation

[0029] To more clearly illustrate this utility model, the preferred embodiments and accompanying drawings will be used for further description. Similar components in the drawings are indicated by the same reference numerals. Those skilled in the art should understand that the specific description below is illustrative rather than restrictive and should not be construed as limiting the scope of protection of this utility model.

[0030] Please refer to Figure 1 and Figure 2 , Figure 1 The diagram shown is a structural schematic of the vehicle-mounted display device of this utility model; Figure 2 The image shown is a structural schematic diagram of the vehicle-mounted display device of this utility model from another perspective. (See attached image.) Figure 1 and Figure 2 As shown, the vehicle-mounted display device includes a housing 1, a display module 2, and a heat dissipation module (not labeled). The housing 1 has a connected base plate and side plates, which form an accommodating space. The display module 2 is located within the accommodating space, and the display surface of the display module 2 faces away from the base plate. The heat dissipation module is fixedly connected to the base plate. The heat dissipation module is used to dissipate heat from the display module 2 during operation to ensure the safe operation of the vehicle-mounted display device.

[0031] In one embodiment, the display module 2 includes a display panel and a backlight module (not shown in the figure). The display panel is placed on the backlight module, which provides a backlight for the display panel. Both the display panel and the backlight module are housed within the accommodating space of the housing 1. That is, the housing 1 has a hollow structure. The display panel is located on the side facing the user for easy viewing, while the backlight module and heat dissipation module are located on the side facing away from the user. This provides a backlight for the display panel while facilitating heat dissipation for the display module 2 without affecting the visual effect.

[0032] In one embodiment, the in-vehicle display device is an in-vehicle central control screen, and the heat dissipation module is, for example, housed inside the car's central control panel. In actual operation, depending on heat dissipation requirements, the in-vehicle display device includes multiple heat dissipation modules, which can be symmetrically connected to the base plate of the housing 1. For example, two heat dissipation modules can be provided (e.g., Figure 2 As shown), two heat dissipation modules are symmetrically connected to the bottom plate of the housing 1 to facilitate heat dissipation for the backlight module, etc. In other embodiments, it is not limited to setting two heat dissipation modules, and the number of heat dissipation modules can be set according to the actual size of the backlight module and the heat generation situation.

[0033] Please refer to Figures 3 to 12It illustrates the schematic diagrams of the components in the heat dissipation module. For example... Figure 3 and Figure 4 As shown, the heat dissipation module includes an isolation frame 4, a first fan assembly 5, and a second fan assembly 6. The first fan assembly 5 has a first support ring 51 and a first fan blade group arranged around the periphery of the first support ring 51. The first fan blade group may include multiple first fan blades 52, which are arranged in a ring around the periphery of the first support ring 51. The second fan assembly 6 has a second support ring 61 and a second fan blade group arranged around the inner periphery of the second support ring 61. The second fan blade group may include multiple second fan blades 62, which are arranged in a ring around the inner periphery of the second support ring 61. The ends of each second fan blade 62 furthest from the second support ring 61 can be connected to each other for subsequent connection to a drive mechanism.

[0034] like Figure 6 and Figure 7 As shown, the isolation frame 4 has an annular isolation sleeve 41. A second support ring 61 is fitted inside the annular isolation sleeve 41 radially, and a first support ring 51 is fitted outside the annular isolation sleeve 41. Furthermore, the annular isolation sleeve 41 is provided with multiple mounting through holes 42 arranged in a ring along the annular isolation sleeve 41. A steering gear 43 is movably connected within each mounting through hole 42, and the steering gear 43 engages with both the first support ring 51 and the second support ring 61 in a transmission relationship. When the vehicle display device is working, the second fan blade assembly is driven by the drive mechanism to rotate. Since each steering gear 43 on the annular isolation sleeve 41 is in transmission cooperation with the first support ring 51 and the second support ring 61 respectively, the second fan blade assembly drives each steering gear 43 to rotate. Power is transmitted through the steering gear 43, thereby driving the first fan assembly 5 to rotate. The first fan assembly 5 and the second fan assembly 6 rotate in opposite directions. For example, the first fan assembly 5 rotates counterclockwise and the second fan assembly 6 rotates clockwise, but this is not a limitation in actual applications.

[0035] The present invention discloses a heat dissipation module and an in-vehicle display device including the present invention. The first fan assembly 5, the isolation frame 4, and the second fan assembly 6 are sequentially sleeved and driven together along the radial direction of the isolation frame 4. When the heat dissipation module is working, the first fan assembly 5 and the second fan assembly 6 rotate in opposite directions. Thus, one of the first fan assembly 5 and the second fan assembly 6 (e.g., the first fan assembly 5) introduces external airflow into the inside of the housing 1, while the other of the first fan assembly 5 and the second fan assembly 6 (e.g., the second fan assembly 6) leads the internal airflow of the housing 1 to the outside, thereby increasing the airflow speed inside the housing 1 and quickly carrying away the hot airflow inside the housing 1, thereby improving the heat dissipation effect. Furthermore, since the second fan assembly 6, the isolation frame 4, and the first fan assembly 5 are sequentially nested along the radial direction of the isolation frame 4, the second fan assembly 6 can be considered as being disposed inside the hollow interior of the first fan assembly 5. The first fan assembly 5 and the second fan assembly 6 are approximately coplanar, making the thickness of the heat dissipation module approximately the thickness of a single fan assembly, which can effectively save installation space inside the car. In addition, the symmetrical design of the first fan assembly 5 and the second fan assembly 6 makes it easy to cancel out the noise generated by the vibration of the two fans during operation, resulting in lower resonance noise and electromagnetic noise of the heat dissipation module as a whole during operation, thus improving the user experience.

[0036] In one embodiment, the heat dissipation module further includes a heat dissipation housing 3, which has a receiving groove. When the heat dissipation module is fixedly connected to the base plate, the receiving groove covers and accommodates the isolation frame 4, the first fan assembly 5, and the second fan assembly 6. Figures 3 to 5 As shown, the heat dissipation housing 3 is provided with multiple mounting holes 8, which are arranged in a rectangular pattern, for example, at the four corners of the heat dissipation housing 3. However, in actual applications, this is not the limitation. The housing 1 (bottom plate) is provided with multiple mounting parts corresponding to the multiple mounting holes 8, so that the heat dissipation housing 3 of the heat dissipation module can be fixedly connected to the housing 1 through the multiple mounting holes 8.

[0037] like Figure 4 and Figure 5 As shown, a perforated bracket 7 is provided at the bottom of the receiving groove of the heat dissipation housing 3. The perforated bracket 7 can be integrally formed with the heat dissipation housing 3, and the perforated bracket 7 is located on the side of the heat dissipation housing 3 away from the display module 2, so that the heat dissipation housing 3 can support / accommodate the isolation frame 4, the first fan assembly 5, and the second fan assembly 6 without affecting the heat dissipation effect. Furthermore, a drive mechanism (e.g., a motor) (not shown in the figure) is fixedly connected to the center of the perforated bracket 7. The drive mechanism is also connected to the second fan blade group of the second fan assembly 6. When the heat dissipation module is working, the second fan assembly 6 is driven to rotate by the drive mechanism (e.g., a motor), which in turn drives the first fan assembly 5 to rotate in the opposite direction via each steering gear 43.

[0038] like Figures 6 to 8As shown, the isolation frame 4 also includes an arc-shaped guide ring 44. The annular isolation sleeve 41 and the arc-shaped guide ring 44 can be integrally formed. In the axial direction of the annular isolation sleeve 41, the annular isolation sleeve 41 may have a first end (e.g., a top end). The arc-shaped guide ring 44 is connected to the first end of the annular isolation sleeve 41 and extends arcuately from the first end to partially cover the first fan blade assembly, so that the arc-shaped guide ring 41 is inclined towards the first fan blade assembly. In the axial direction of the annular isolation sleeve 41, the annular isolation sleeve 41 has a first thickness, and the first support ring 51 has a second thickness. The first thickness is not less than the second thickness to ensure that the arrangement of the arc-shaped guide ring 44 will not affect the mechanism interference with the first fan assembly 5 and the second fan assembly 6, and to ensure the normal operation of the first fan assembly 5 and the second fan assembly 6.

[0039] Furthermore, along the axial direction of the annular isolation sleeve 41, the annular isolation sleeve 41 also has a second end (e.g., the bottom end) opposite to the aforementioned first end. The second end is fixedly connected to the hollow bracket 7, that is, the bottom of the annular isolation sleeve 41 is fixedly connected to the hollow bracket 7. The arc-shaped guide ring 44 extends above the first fan assembly 5 and is disposed on the inner side of the housing 1. That is, the arc-shaped guide ring 44 is closer to the display panel 2 than the first fan assembly 5 and the second fan assembly 6, and the arc-shaped guide ring 44 extends parallel to the direction of the display panel 2, which can facilitate the guidance of the airflow flowing through the display panel 2.

[0040] In this embodiment, the first fan assembly 5 and the second fan assembly 6 are isolated by the annular isolation sleeve 41, thereby separating the air intake and exhaust, preventing the airflow entering the inner side of the housing 1 from being directly discharged and causing a short circuit in the airflow. In addition, the arc-shaped guide ring 44 above the annular isolation sleeve 41 can also guide the airflow of the intake, so that the external airflow enters the inner side of the housing 1 and flows rapidly to the surroundings, and carries away the heat from the surroundings.

[0041] like Figures 9 to 12 As shown, the first support ring 51 has an inner surface corresponding to the annular isolation sleeve 41, and a plurality of meshing internal gear teeth 53 are provided on the inner surface, and the plurality of meshing internal gear teeth 53 are arranged in an annular arrangement. The second support ring 61 has an outer surface corresponding to the annular isolation sleeve 41, and a plurality of driving external gear teeth 63 are provided on the outer surface, and the plurality of driving external gears 63 are arranged in an annular arrangement. The plurality of driving external gears 63 and the plurality of meshing internal gears 53 respectively mesh with each steering gear 43.

[0042] In one embodiment, multiple driving outer gear teeth 63 are disposed on the inner side of the annular isolation sleeve 41, and multiple meshing inner gear teeth 53 are disposed on the outer side of the annular isolation sleeve 41. The multiple driving outer gear teeth 63 and the multiple meshing inner gear teeth 53 respectively mesh with the steering gear 43, so that the steering gear teeth 43 respectively engage with the first support ring 51 and the second support ring 61. When the heat dissipation module is working, after the second fan assembly 6 is driven to rotate by the drive mechanism (e.g., a motor), the rotation of the second fan assembly 6 drives the rotation of the first fan assembly 5 by the cooperation of the multiple driving outer gear teeth 63, the multiple meshing inner gear teeth 53 and the steering gear 43. The operation of the two fan assemblies in different rotation directions can be realized by a single drive mechanism. The structure is simple, can save manufacturing costs, and is easy to control.

[0043] The working principle of the heat dissipation module of this utility model is as follows: First, the internal drive circuit of the car powers the drive mechanism (e.g., a motor) fixed at the center of the hollow bracket 7. The output shaft of the drive mechanism drives the second fan blade assembly 6 to rotate. The second support ring 61 around the second fan blade assembly rotates inside the mounting through hole 42 through the meshing of multiple external drive gears 63 and multiple steering gears 43. The other side of the steering gears 43 rotates the first support ring 51 through the meshing of multiple internal gears 53. The first fan blade assembly on the first support ring 51 sends external airflow into the inside of the housing 1. The first fan assembly 5 acts as a blower, which can draw in external cold air. The drawn-in external airflow faces the concave surface of the arc-shaped guide ring 44, so that the airflow passes through the annular isolation sleeve 41 and the arc-shaped guide ring 44. After being guided, the air no longer sprays straight towards the center, but instead transforms into an airflow that diffuses outwards along the curved surface of the arc-shaped guide ring 44. This diffused external airflow enters the inner side of the housing 1 and flows outwards from the central area of ​​the fan to the various edges and corners inside the housing 1. This ensures that the cold air makes full and uniform contact with the entire heat-generating area of ​​the display module 2, avoiding the problem of the central area of ​​the display panel 2 being too cold and the periphery being too hot. When the heat around the display module 2 is carried away, the cold air absorbs heat and becomes hot air. The second fan assembly 6 acts as an exhaust fan, and its rotation direction is opposite to that of the first fan assembly 5. The rotating heat dissipation fan blades 62 can draw away the hot air that has completed heat exchange, allowing the airflow inside the heat dissipation shell 3 to be discharged, increasing the airflow velocity inside the heat dissipation shell 3, and expelling the hot air outside the housing 1, thus forming a complete heat exchange cycle. The airflow quickly carries away the internal heat, thereby improving the heat dissipation effect on the electronic components inside the heat dissipation shell 3.

[0044] In one embodiment, the bottom plate of the housing 1 has a through hole corresponding to the heat dissipation module. The heat dissipation module covers the corresponding through hole, through which the display module can be exposed relative to the heat dissipation module. In the thickness direction of the vehicle display device, there is a gap between the arc-shaped guide ring 44 and the backlight module. Due to the existence of the gap, airflow can flow within the gap. After the external airflow enters through the first fan assembly 5, it diffuses to the surroundings. Then, the airflow around the inner side of the housing 1 carries heat through the inner side of the annular isolation sleeve 41 and is discharged, thereby ensuring the heat dissipation effect of the vehicle display device.

[0045] In summary, this utility model provides a heat dissipation module and an in-vehicle display device including the same. A first fan assembly, an isolation frame, and a second fan assembly are sequentially sleeved and driven together along the radial direction of the isolation frame. When the heat dissipation module is working, the first fan assembly and the second fan assembly rotate in opposite directions. One of the first fan assembly and the second fan assembly introduces external airflow into the inside of the display module, while the other of the first fan assembly and the second fan assembly guides the internal airflow of the display module to the outside, thereby increasing the airflow speed inside the in-vehicle display device. This allows for the rapid removal of internal hot airflow, thus improving the heat dissipation effect. Furthermore, the heat dissipation module is relatively thin, which can effectively save installation space inside the car.

[0046] Although the present invention has been described in conjunction with the accompanying drawings, the embodiments disclosed in the drawings are intended to provide illustrative examples of preferred embodiments of the present invention and should not be construed as limiting the present invention. For the purpose of clearly describing the required components, the scale in the schematic drawings does not represent the actual proportional relationships of the components.

[0047] This utility model has been described by the above-described embodiments; however, these embodiments are merely examples for implementing this utility model. It must be noted that the disclosed embodiments do not limit the scope of this utility model. Conversely, any modifications and refinements made without departing from the spirit and scope of this utility model are within the scope of patent protection of this utility model.

Claims

1. A heat dissipation module for an in-vehicle display device, characterized in that, This heat dissipation module includes: The first fan assembly has a first support ring and a first fan blade assembly arranged around the periphery of the first support ring; The second fan assembly has a second support ring and a second fan blade assembly arranged around the inner periphery of the second support ring; as well as An isolation frame has an annular isolation sleeve. In the radial direction of the annular isolation sleeve, a second support ring is sleeved on the inner side of the annular isolation sleeve, and a first support ring is sleeved on the outer side of the annular isolation sleeve. The annular isolation sleeve is provided with multiple mounting through holes arranged in a ring. Each mounting through hole is movably connected to a steering gear, which is in transmission cooperation with the first support ring and the second support ring respectively.

2. The heat dissipation module according to claim 1, characterized in that, The heat dissipation module also includes a heat dissipation housing with a receiving slot that covers and accommodates the first fan assembly, the second fan assembly, and the isolation frame.

3. The heat dissipation module according to claim 2, characterized in that, The bottom of the receiving slot is provided with a hollow support, and a motor is fixedly connected to the center of the hollow support. The motor is also connected to the second fan blade assembly.

4. The heat dissipation module according to claim 1, characterized in that, Along the axial direction of the annular isolation sleeve, the annular isolation sleeve has a first thickness, and the first support ring has a second thickness, the first thickness being not less than the second thickness.

5. The heat dissipation module according to claim 4, characterized in that, The isolation frame also includes an arc-shaped guide ring, the annular isolation sleeve having a first end along its axial direction, the arc-shaped guide ring being connected to the first end and extending arc-shaped from the first end to partially cover the first blade assembly.

6. The heat dissipation module according to claim 5, characterized in that, The heat dissipation module also includes a heat dissipation shell with a receiving groove and a hollow support at the bottom of the receiving groove. The annular isolation sleeve has a second end along its axial direction opposite to the first end, and the second end is fixedly connected to the hollow support.

7. The heat dissipation module according to claim 1, characterized in that, The first support ring has an inner surface corresponding to the annular isolation sleeve, and a plurality of meshing internal gear teeth are provided on the inner surface, and the plurality of meshing internal gear teeth are arranged in an annular arrangement along the inner surface; the second support ring has an outer surface corresponding to the annular isolation sleeve, and a plurality of driving external gear teeth are provided on the outer surface, and the plurality of driving external gear teeth are arranged in an annular arrangement along the outer surface; the plurality of driving external gears and the plurality of meshing internal gears respectively mesh with the steering gear.

8. A vehicle-mounted display device, characterized in that, The vehicle-mounted display device includes: Display module; The housing has a bottom plate and a side plate connected to each other, the bottom plate and the side plate forming an accommodating space, the display module is located in the accommodating space, and the display surface of the display module is opposite to the bottom plate; as well as The heat dissipation module as described in any one of claims 1 to 7 is fixedly connected to the base plate.

9. The vehicle-mounted display device according to claim 8, characterized in that, The base plate has a through hole corresponding to the heat dissipation module, the heat dissipation module covers the through hole, the isolation frame also includes an arc-shaped guide ring, the annular isolation sleeve has a first end along its axial direction, the arc-shaped guide ring is connected to the first end, and in the thickness direction of the vehicle display device, there is a gap between the arc-shaped guide ring of the heat dissipation module and the backlight module.

10. The vehicle-mounted display device according to claim 8, characterized in that, The vehicle display device includes multiple heat dissipation modules, which are symmetrically connected to the base plate.

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