A waterproof ventilation and heat dissipation block and a display screen with the same

Abstract

The utility model relates to a waterproof ventilation and heat dissipation block and display screen with ventilation and heat dissipation block, and the heat dissipation block includes base block, installs the mounting panel on the base block to first ventilation and waterproof air permeable membrane that set up on the mounting panel. First ventilation is located in the covering range of waterproof air permeable membrane, and the side surface of base block is equipped with second ventilation, and the inside is equipped with the heat dissipation cavity that links first ventilation and second ventilation, and through this design, realized the double function of guiding heat dissipation and waterproof air permeable, and adapted to the mobile external device such as vehicle display screen.

Description

Technical Field

[0001] This utility model relates to the technical field of vehicle-mounted displays, and more specifically, to a waterproof ventilated heat sink and a display screen having the ventilated heat sink. Background Technology

[0002] In the automotive industry, to enhance the driving experience and ease of information access, an increasing number of vehicles are installing in-vehicle displays in locations such as the roof to display entertainment content, advertisements, and other information. These roof-mounted displays generate heat during operation, making heat dissipation a crucial issue that must be considered to ensure stable operation and extend their lifespan. Currently, the heat dissipation structure of such in-vehicle displays typically involves pre-setting heat dissipation channels inside the display body, and then creating air vents and inlets on the display's outer casing. Its working principle is to utilize the relative airflow generated during vehicle movement to automatically draw in outside air through the inlets, allowing it to flow through the internal heat dissipation channels, carrying away the heat generated inside, and then expelling it through the outlets. This passive design, utilizing airflow for heat dissipation, can meet basic cooling needs to a certain extent and eliminates the need for additional active cooling components such as fans, offering a cost advantage. However, this design, which integrates heat dissipation directly into the main structure of the display screen, reveals several problems in practical applications: First, because the air inlet and outlet of the display screen are directly connected to the internal heat dissipation channels, and these inlets and outlets are directly located on the display screen casing, the relatively sensitive electronic components inside the display screen are exposed to the external environment. During vehicle operation, dust, sand, rainwater, and other pollutants from the road can easily enter the display screen through these openings. Long-term accumulation can lead to short circuits in the circuit boards, component corrosion, or poor contact, seriously affecting the reliability and lifespan of the display screen, especially under dusty, rainy, or bumpy road conditions, where the risk is even higher. Therefore, there is an urgent need in the field for an independent ventilation and heat dissipation block with a more optimized structure, higher heat dissipation efficiency, and more reliable waterproof performance that can work in conjunction with the air inlet and outlet of the display screen to guide heat dissipation and prevent water, dust and other substances in the air from entering the display screen, so as to meet the growing heat dissipation and protection needs of electronic devices such as automotive displays. Utility Model Content

[0003] The main objective of this invention is to provide a waterproof ventilated heat dissipation block and a display screen with the ventilated heat dissipation block, in order to solve the problems disclosed in the background art.

[0004] On the one hand, the technical solution adopted by this utility model to solve its technical problem is to provide a waterproof ventilated heat dissipation block, which includes a base block; a mounting plate is provided on the base block; a first vent and a waterproof and breathable membrane are provided on the mounting plate; the first vent is located within the coverage area of ​​the waterproof and breathable membrane; a second vent is provided on one side surface of the base block; and a heat dissipation cavity connecting the first vent and the second vent is provided inside the base block. The ventilation and heat dissipation block of this utility model is provided with a partition in the heat dissipation cavity; the partition divides the cavity into a first airflow channel and a second airflow channel; one end of the partition is also provided with a third airflow channel connecting the first airflow channel and the second airflow channel.

[0005] In the ventilation and heat dissipation block of this utility model, the second ventilation opening is located at the end of the partition away from the third airflow channel and is directly connected to the second airflow channel.

[0006] In the ventilation and heat dissipation block of this utility model, the first ventilation opening is located above the partition and is directly connected to the first airflow channel.

[0007] In the ventilation and heat dissipation block of this utility model, the partition is horizontally arranged in the heat dissipation cavity, and the first airflow channel and the second airflow channel are arranged vertically parallel to each other.

[0008] In the ventilation and heat dissipation block of this utility model, both the first airflow channel and the third airflow channel are directly connected to the first ventilation opening.

[0009] The ventilation and heat dissipation block of this utility model has the following features: the length of the first airflow channel is greater than the length of the second airflow channel; the third airflow channel is inclined upward and outward.

[0010] In the ventilation and heat dissipation block of this utility model, the area of ​​the first ventilation opening is larger than the area of ​​the second ventilation opening.

[0011] On the other hand, the present invention also provides a display screen with a ventilation and heat dissipation block, wherein the display screen is provided with a heat dissipation channel; the air outlet and air inlet of the heat dissipation channel are provided with the ventilation and heat dissipation block as described in any one of the claims.

[0012] In the display screen of this utility model, the ventilation and heat dissipation block is detachably connected to the display screen; In the display screen of this utility model, the heat dissipation channel is disposed on the inner side of the lower end of the display screen and extends along the length direction of the display screen; the air outlet and air inlet of the heat dissipation channel are both located on the lower surface of the display screen, and the two ventilation and heat dissipation blocks are also correspondingly disposed at the lower end of the display screen.

[0013] The beneficial effects of this utility model are as follows: The ventilation and heat dissipation block has a simple structure and ingenious design. During vehicle operation, external air, under the influence of wind speed and pressure, actively enters the heat dissipation cavity through the second vent. Then, after being filtered and blocked by the waterproof and breathable membrane, moisture and dust in the air are isolated within the heat dissipation cavity. The dry air then enters the heat dissipation channel of the external equipment through the first vent, thus dissipating heat from the external equipment. The waterproof and breathable membrane effectively prevents the intrusion of rainwater and dust, protecting the electronic components inside the external equipment, thereby significantly improving the reliability and service life of the external equipment. This ventilation and heat dissipation structure is both effectively waterproof and efficiently ventilates and dissipates heat, making it suitable for mobile external equipment such as in-vehicle displays. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the present invention will be further described below in conjunction with the accompanying drawings and embodiments. The drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Figure 1 This is an exploded cross-sectional view of a waterproof ventilation and heat dissipation block according to Embodiment 1 of this utility model; Figure 2 This is a schematic diagram of the structure of a display screen with a ventilation and heat dissipation block in Embodiment 2 of this utility model. Detailed Implementation

[0015] The terms "first," "second," "third," and "fourth," etc., used in the specification, claims, and accompanying drawings of this invention are used to distinguish different objects, not to describe a specific order. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or apparatus that includes a series of steps or units is not limited to the listed steps or units, but may optionally include steps or units not listed, or may optionally include other steps or units inherent to these processes, methods, products, or apparatuses.

[0016] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of the invention. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0017] "Multiple" refers to two or more. "And / or" describes the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A alone, A and B simultaneously, or B alone. The character " / " generally indicates that the preceding and following related objects have an "or" relationship.

[0018] Furthermore, the terms indicating orientation, such as "up, down, front, back, left, right, upper end, lower end, longitudinal," etc., are all based on the posture and position of the device or equipment described in this solution during normal use.

[0019] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, a clear and complete description will be provided below in conjunction with the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the protection scope of the present invention.

[0020] Example 1: A preferred embodiment of this utility model provides a waterproof ventilated heat dissipation block 10, such as... Figure 1 As shown, the structure includes a base block 11; a mounting plate 12 is provided on the base block 11; in this embodiment, the base block 11 is the basic structure of the entire ventilation and heat dissipation block, and usually has a certain thickness and strength. The mounting plate 12 is fixed or integrally formed on the upper surface of the base block 11. The mounting plate 12 is used to install the entire ventilation and heat dissipation block onto a device requiring heat dissipation (such as a display screen); the mounting plate 12 is provided with a first vent 121 and a waterproof and breathable membrane 13; the waterproof and breathable membrane 13 is a special thin film material commonly used in the prior art, which allows gas molecules (such as air) to pass through, but effectively blocks the intrusion of liquid droplets and most dust particles. The first vent 121 is located within the coverage area of ​​the waterproof and breathable membrane 13, ensuring that all incoming airflow must be filtered by the waterproof and breathable membrane; a second vent 111 is provided on one side surface of the base block 11 (e.g., the right side surface); a heat dissipation cavity is provided inside the base block 11, connecting the first vent 121 and the second vent 111; the heat dissipation cavity can provide a separate heat dissipation airflow channel.

[0021] This ventilation and heat dissipation block features a simple yet ingenious design. During vehicle operation, external air, driven by wind speed and pressure, actively enters the heat dissipation chamber through the second vent. After being filtered and blocked by a waterproof and breathable membrane, moisture and dust are trapped within the chamber. Dry air then enters the heat dissipation channels of external devices through the first vent, further cooling them. The waterproof and breathable membrane effectively prevents rainwater and dust intrusion, protecting the internal electronic components and significantly improving the reliability and lifespan of the external devices. This ventilation and heat dissipation structure is both waterproof and highly efficient, making it suitable for mobile external devices such as in-vehicle displays.

[0022] Furthermore, a partition 14 is provided within the heat dissipation cavity; the partition 14 divides the heat dissipation cavity into a first airflow channel 112 and a second airflow channel 113; it is worth noting that the partition 14 does not completely isolate the cavity, and one end of the partition 14 is also provided with a third airflow channel 114 connecting the first airflow channel 112 and the second airflow channel 113. By setting the partition and the third airflow channel, the originally single heat dissipation cavity is divided into two main airflow channels (first and second) and connected by the third airflow channel. This design can guide the airflow to flow along a preset path, increase the degree of airflow turbulence or the path of the airflow, help improve the heat dissipation efficiency, and may optimize the airflow organization, reduce the direct water vapor impact path of the air, and this curved airflow channel can also extend the flow path within a limited volume, providing a buffer space for the air to reach the first vent.

[0023] Furthermore, to extend the length of the airflow channel, the second vent 111 is located at the end of the partition 14 furthest from the third airflow channel 114 and is directly connected to the second airflow channel 113. The first vent 121 is located above the partition 14 and is directly connected to the first airflow channel 112. The obstruction of the partition and the connection to the third airflow channel can form a more complex airflow path, further promoting heat dissipation. Furthermore, the partition 14 is horizontally positioned within the heat dissipation cavity, and the first airflow channel 112 and the second airflow channel 113 are arranged vertically parallel. Both the first airflow channel 112 and the third airflow channel 114 are directly connected to the first vent 121.

[0024] The ventilation and heat dissipation block is installed at the car's air intake, with its second vent facing the front of the car. During vehicle movement, external air, influenced by the vehicle's speed, actively enters the third airflow channel from the second vent. Some of this airflow may then enter the first airflow channel, while some enters directly through the first vent (also passing through a waterproof and breathable membrane). The airflow in the first airflow channel then enters the device's interior through the first vent (again, through the waterproof and breathable membrane). The internal channels of the ventilation and heat dissipation block increase the airflow path and potential turbulence, guiding air quickly into the display screen for air exchange and heat removal. (Also covered by a waterproof and breathable membrane); The ventilation and heat dissipation block is installed at the air vent of the car, with its second vent facing the rear of the car. When the car is moving, the air pressure at the second vent decreases. When the internal temperature of the device rises, the internal air expands, or the internal air needs to be vented after heat exchange, the hot air will be discharged from the first vent at the air vent. Some of the gas is directly discharged into the first airflow channel, and the other part of the gas is directly discharged into the third airflow channel. The gas in the first airflow channel will also flow towards the third airflow channel. Finally, the airflow converges into the second airflow channel and is discharged outward into the air from the second vent, thus completing the heat dissipation of the vehicle display screen.

[0025] Furthermore, the length of the first airflow channel 112 is greater than the length of the second airflow channel 113; the third airflow channel 114 is inclined upward and outward, serving a guiding and diverting function. Optionally, the area of ​​the first vent 121 is greater than the area of ​​the second vent 111.

[0026] Example 2: like Figure 2 As shown, this utility model also provides a display screen 20 with a ventilation heat dissipation block 10, and the display screen 20 is provided with a heat dissipation channel; the air outlet and air inlet of the heat dissipation channel are provided with ventilation heat dissipation blocks 10 as in Embodiment 1; specifically, the structure of the ventilation heat dissipation block 10 is as described in Embodiment 1, and will not be repeated here.

[0027] Placing the aforementioned ventilation and heat dissipation blocks at the air inlet and outlet of the display screen's heat dissipation channel ensures both effective airflow within the display screen and effective isolation from the external environment. The ventilation and heat dissipation blocks at both the air inlet and outlet prevent moisture and dust from entering the screen.

[0028] Furthermore, the ventilation and heat sink 10 is detachably connected to the display screen 20, for example, by screws, clips, or bolts, facilitating installation, maintenance, and replacement. When the ventilation and heat sink needs cleaning, repair, or replacement, it can be easily removed from the display screen without extensive disassembly, improving product maintainability and lifespan.

[0029] Optionally, the heat dissipation channel is located on the lower inner side of the display screen 20 and extends along the length of the display screen 20; the air outlet and air inlet of the heat dissipation channel are both located on the lower surface of the display screen 20, and the two ventilation heat dissipation blocks 10 are also correspondingly located at the lower end of the display screen 20.

[0030] The ventilation and heat dissipation block is installed at the car's air intake, with its second vent facing the front of the car. During vehicle movement, external air, influenced by the vehicle's speed, actively enters the third airflow channel from the second vent. Some of this airflow may then enter the first airflow channel, while some enters directly through the first vent (also passing through a waterproof and breathable membrane). The airflow in the first airflow channel then enters the device's interior through the first vent (again, through the waterproof and breathable membrane). The internal channels of the ventilation and heat dissipation block increase the airflow path and potential turbulence, guiding air quickly into the display screen for air exchange and heat removal. (Also covered by a waterproof and breathable membrane); The ventilation and heat dissipation block is installed at the air vent of the car, with its second vent facing the rear of the car. When the car is moving, the air pressure at the second vent decreases. When the internal temperature of the device rises, the internal air expands, or the internal air needs to be vented after heat exchange, the hot air will be discharged from the first vent at the air vent. Some of the gas is directly discharged into the first airflow channel, and the other part of the gas is directly discharged into the third airflow channel. The gas in the first airflow channel will also flow towards the third airflow channel. Finally, the airflow converges into the second airflow channel and is discharged outward into the air from the second vent, thus completing the heat dissipation of the vehicle display screen.

[0031] It should be understood that those skilled in the art can make improvements or modifications based on the above description, and all such improvements and modifications should fall within the protection scope of the appended claims.

Claims

1. A waterproof ventilated heat dissipation block, characterized in that, The device includes a base block; a mounting plate is provided on the base block; a first vent and a waterproof and breathable membrane are provided on the mounting plate; the first vent is located within the coverage area of ​​the waterproof and breathable membrane; a second vent is provided on one side surface of the base block; and a heat dissipation cavity connecting the first vent and the second vent is provided inside the base block.

2. The ventilation and heat dissipation block according to claim 1, characterized in that, The heat dissipation cavity is also provided with a partition; the partition divides the cavity into a first airflow channel and a second airflow channel; one end of the partition is also provided with a third airflow channel connecting the first airflow channel and the second airflow channel.

3. The ventilation and heat dissipation block according to claim 2, characterized in that, The second vent is located at the end of the partition away from the third airflow channel and is directly connected to the second airflow channel.

4. The ventilation and heat dissipation block according to claim 3, characterized in that, The first vent is located above the partition and is directly connected to the first airflow channel.

5. The ventilation and heat dissipation block according to any one of claims 2-4, characterized in that, The partition is horizontally disposed within the heat dissipation cavity, and the first airflow channel and the second airflow channel are arranged vertically parallel to each other.

6. The ventilation and heat dissipation block according to claim 5, characterized in that, Both the first airflow channel and the third airflow channel are directly connected to the first vent.

7. The ventilation and heat dissipation block according to claim 5, characterized in that, The length of the first airflow channel is greater than the length of the second airflow channel; the third airflow channel is inclined upward and outward.

8. A display screen with a ventilated heat dissipation block, characterized in that, The display screen is provided with a heat dissipation channel; the air outlet and air inlet of the heat dissipation channel are provided with ventilation and heat dissipation blocks as described in any one of claims 1-7.

9. The display screen according to claim 8, characterized in that, The ventilation and heat dissipation block is detachably connected to the display screen.

10. The display screen according to claim 8 or 9, characterized in that, The heat dissipation channel is located on the lower inner side of the display screen and extends along the length of the display screen; the air outlet and air inlet of the heat dissipation channel are both located on the lower surface of the display screen, and the two ventilation and heat dissipation blocks are also correspondingly located at the lower end of the display screen.

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