Multi-partition independent air duct variable information board cabinet

Abstract

The utility model discloses a variable information board box body of many partition independent air flue belongs to box body heat dissipation technical field. Including the box body, the box body one side is provided with the mounting panel, the mounting panel outside is installed with the LED module, the mounting panel inboard is installed with the power module, is provided with a plurality of independent heat dissipation partition in the box body, every heat dissipation partition is provided with the detachable flow guide plate, the flow guide plate, the heat dissipation partition inboard wall and corresponding LED module back form the air flue, the lower part of air flue is provided with the air inlet, the lower part of air flue is provided with the air outlet, the flow guide plate middle part is protruding and is close to the power module, the air outlet is provided with the axial flow fan system outward. Solve the single heat dissipation space of traditional information box body and the obvious heat dissipation dead zone of existence, cause the technical problem of partial module damage because of long -term overheating.

Description

Technical Field

[0001] This utility model relates to the field of heat dissipation technology for enclosures, and in particular to a variable information board enclosure with multi-zone independent air ducts. Background Technology

[0002] Variable message signs (VMS) are core equipment for highway information dissemination and require stable operation around the clock. They integrate numerous high-power electronic components, including LED display modules, driver circuits, power conversion modules, and communication control units. These components generate significant heat during operation, especially in high-temperature summer environments where the internal temperature can exceed 75°C, far exceeding the safe operating temperature of electronic components (typically ≤65°C). Prolonged operation at high temperatures directly leads to accelerated LED light decay, decreased power efficiency, and control system malfunctions, significantly reducing the equipment's lifespan.

[0003] As information boards evolve towards higher brightness and higher pixel density, power consumption per unit area increases significantly. Traditional heat dissipation solutions face three major technical bottlenecks: 1. Heat accumulation effect: The power module (heat point 80-90℃) and LED module are mixed, causing heat to accumulate inside the cabinet; 2. Fault propagation risk: Single-point heat dissipation failure leads to overall cabinet temperature rise, triggering a chain reaction of failures; 3. Maintenance difficulties: The heat dissipation system is highly coupled with the display module, requiring the entire unit to be shut down for maintenance. Currently, the industry commonly uses the following heat dissipation solutions, but all have shortcomings: 1. Integrated heat dissipation design: Traditional information boards treat the entire cabinet as a single heat dissipation space, with fan groups set at the top or bottom. This design leads to chaotic airflow organization and obvious heat dissipation dead zones. The temperature difference between different areas inside the cabinet can reach more than 15℃, and some modules are damaged due to long-term overheating; 2. Passive heat dissipation structure: Some manufacturers use double-layer access doors or fill the cabinet walls with heat insulation materials. Although the impact of external heat radiation is reduced, it cannot effectively dissipate internal heat accumulation, and its effect is limited during continuous operation; 3. Simple mechanical ventilation: such as the "double-door heat dissipation design" adopted by some gantry-type information boards, which relies solely on natural convection for heat dissipation and lacks forced airflow circulation, making it difficult to meet the heat dissipation requirements of high-density LED displays.

[0004] Based on the above background, an innovative multi-zone independent airflow heat dissipation structure is proposed, which solves the heat dissipation problem of variable information boards through modular independent airflow design. Summary of the Invention

[0005] The purpose of this invention is to address the above-mentioned problems by providing a variable information board enclosure with multiple independent air ducts, thus solving the technical problem that traditional information boxes have a single heat dissipation space with obvious heat dissipation dead zones, causing some modules to be damaged due to long-term overheating.

[0006] To achieve the above objectives, the technical solution adopted by this utility model is as follows: A variable message sign housing with multiple independent air ducts includes a housing, a mounting plate on one side of the housing, an LED module mounted on the outer side of the mounting plate, a power module mounted on the inner side of the mounting plate, and several independent heat dissipation zones within the housing. Each heat dissipation zone is equipped with a detachable guide plate. The guide plate, the inner wall of the heat dissipation zone, and the back of the corresponding LED module form an air duct. An air inlet and an air outlet are provided at the lower part of the air duct. The guide plate protrudes in the middle and is close to the power module. An axial flow fan system is provided outside the air outlet.

[0007] Furthermore, the air inlet is provided with a detachable air intake grille, and the air intake grille is provided with a placement groove, in which dustproof filter cotton is placed.

[0008] Furthermore, the axial flow fan system includes an axial flow fan, a controller, and a temperature sensor. Both the axial flow fan and the temperature sensor are connected to the controller. The controller controls the airflow speed of the axial flow fan based on the temperature detected by the temperature sensor. The temperature sensor is installed in the corresponding partition.

[0009] Furthermore, the axial flow fan is connected to the housing via rubber gaskets.

[0010] Furthermore, each of the aforementioned heat dissipation zones is equipped with a corresponding heat-insulated access door.

[0011] Furthermore, the housing is provided with a first water-blocking edge and a second water-blocking edge, the first water-blocking edge being located above the LED module and the second water-blocking edge being located above the heat-insulated inspection door.

[0012] Furthermore, the enclosure is provided with one or more partitions, which are vertically arranged, and the heat dissipation partitions are formed inside the enclosure through the partitions.

[0013] Furthermore, an elastic thermally conductive pad is provided between each of the partitions and the inner side wall of the box.

[0014] Furthermore, a dust filter is installed at the exhaust vent.

[0015] Due to the adoption of the above technical solution, the beneficial effects of this utility model are as follows: 1. By setting independent heat dissipation zones, this utility model can divide the cabinet into several independent spaces. During heat dissipation, it can significantly reduce heat dissipation dead zones and reduce the possibility of module damage due to long-term overheating. The air duct formed by the guide plate guides high-speed airflow to flow close to the surface of the LED display module and power module, significantly enhancing the convective heat transfer efficiency. Based on the above, this utility model solves the technical problem of the traditional information cabinet having a single heat dissipation space with obvious heat dissipation dead zones, causing some modules to be damaged due to long-term overheating.

[0016] 2. This utility model features a detachable air intake grille with a dust filter placed on it. This allows for air filtration at the intake, reducing dust and impurities from entering the housing and preventing them from adhering to the module surface and affecting heat dissipation, thus improving reliability. The detachable air intake grille makes replacing the dust filter simple and convenient; simply remove the grille, take out the old filter, and insert a new one.

[0017] 3. The axial flow fan system of this utility model is equipped with a controller and a temperature sensor. The controller controls the wind speed of the axial flow fan according to the temperature detected by the temperature sensor, forming a variable frequency axial flow fan system to achieve energy saving. The axial flow fan is connected to the housing by rubber gaskets, which can reduce the impact of axial flow fan vibration on the housing and internal modules.

[0018] 4. This utility model reduces the entry of external heat by providing a heat-insulated inspection door, and also facilitates individual maintenance of each heat dissipation zone; the first and second water-blocking edges enhance the waterproof effect of the equipment; and the elastic thermally conductive pads ensure uninterrupted heat transfer paths and avoid thermal bridging effects. Attached Figure Description

[0019] Figure 1 This is a three-dimensional drawing of the present invention; Figure 2 This is a three-dimensional view of the present invention from another perspective; Figure 3 This is a diagram of the internal structure of the present invention (the LED module is not shown, and the housing is in a transparent state). Figure 4 This is a cross-sectional view of the present invention.

[0020] In the attached diagram, 1-box body, 2-mounting plate, 3-LED module, 4-power module, 5-heat dissipation partition, 6-guide plate, 7-air intake grille, 8-axial flow fan, 9-heat insulated inspection door, 10-first water baffle, 11-second water baffle, 12-partition, 13-dust filter. Detailed Implementation

[0021] The specific implementation of the utility model will be further described below with reference to the accompanying drawings.

[0022] In the description of this utility model, it should be understood that the terms "center", "length", "width", "upper", "lower", "vertical", "horizontal", "top", "bottom", "inner", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0023] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0024] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0025] Please see Figures 1 to 4A variable message sign enclosure 1 with multi-zone independent air ducts includes an enclosure 1, a mounting plate 2 on one side of the enclosure 1, LED modules 3 mounted on the outer side of the mounting plate 2, and a power module 4 mounted on the inner side of the mounting plate 2. The enclosure 1 contains several independent heat dissipation zones 5. Each heat dissipation zone 5 has a detachable guide plate 6. The guide plate 6, the inner wall of the heat dissipation zone 5, and the back of the corresponding LED module 3 form an air duct. An air inlet and an air outlet are located at the lower part of the air duct. The guide plate 6 protrudes in the middle and is close to the power module 4. An axial flow fan 8 system is installed outside the air outlet. Specifically, the enclosure 1 is formed by bending and welding galvanized sheet, with a light-colored anti-corrosion paint finish. Each heat dissipation zone 5 corresponds to six standard LED modules 3, each measuring 320×160mm, arranged in a rectangular array. Each heat dissipation zone 5 has three air inlets located at the bottom of the zone, each measuring 270×50mm. There are also three exhaust vents located at the top of heat dissipation zone 5 and the back of the casing 1, each measuring 80×80mm. The airflow direction is from bottom to top, with a designed airflow speed of 2.5-3.5m / s.

[0026] In this embodiment, a detachable air intake grille 7 is provided at the air inlet. The air intake grille 7 has a placement groove where dust filter cotton is placed. The detachable air intake grille 7, with the dust filter cotton placed on it, filters the air at the air intake, reducing dust and impurities from entering the housing 1. This prevents dust and impurities from adhering to the module surface and affecting its heat dissipation, thus improving reliability. The detachable air intake grille 7 allows for easy replacement of the dust filter cotton; simply remove the old dust filter cotton and insert the new one. The dust filter cotton replacement operation is simple and convenient.

[0027] In this embodiment, the axial flow fan 8 system includes an axial flow fan 8, a controller, and a temperature sensor. Both the axial flow fan 8 and the temperature sensor are connected to the controller. The controller controls the airflow speed of the axial flow fan 8 based on the temperature detected by the temperature sensor, which is installed in a corresponding partition. The axial flow fan 8 is connected to the housing 1 via rubber gaskets. The axial flow fan 8 system, by incorporating a controller and a temperature sensor, and by controlling the airflow speed of the axial flow fan 8 based on the temperature detected by the temperature sensor, forms a variable frequency axial flow fan 8 system, achieving energy-saving effects. The rubber gaskets connecting the axial flow fan 8 to the housing 1 reduce the impact of vibration from the axial flow fan 8 on the housing and internal modules. It should be noted that the controller controlling the airflow speed of the axial flow fan 8 based on the temperature detected by the temperature sensor is prior art, and the specific details of this application will not be elaborated upon.

[0028] In this embodiment, each heat dissipation zone 5 is equipped with a corresponding heat-insulated inspection door 9. The heat-insulated inspection door 9 is filled with 25mm thick rock wool insulation material. By providing the heat-insulated inspection door 9, the entry of external heat can be reduced, and individual maintenance of each heat dissipation zone 5 can be facilitated.

[0029] In this embodiment, the housing 1 is provided with a first water-blocking edge 10 and a second water-blocking edge 11. The first water-blocking edge 10 is located above the LED module 3, and the second water-blocking edge 11 is located above the heat-insulated inspection door 9. The first water-blocking edge 10 and the second water-blocking edge 11 enhance the waterproof effect of the equipment.

[0030] In this embodiment, the housing 1 is provided with one or more partitions 12, which are vertically arranged, and heat dissipation partitions 5 are formed inside the housing 1 through the partitions 12. By providing elastic thermally conductive pads, the heat transfer path can be ensured to be unobstructed, avoiding the thermal bridging effect.

[0031] In this embodiment, an elastic thermally conductive pad is provided between each partition 12 and the inner wall of the housing 1. The elastic thermally conductive pad is made of silicone substrate and has a thermal conductivity ≥1.5W / m·K.

[0032] In this embodiment, a dust filter 13 is provided at the exhaust vent. The dust filter 13 can prevent foreign objects from flying in and causing damage to the axial flow fan 8.

[0033] The above description is a detailed description of the preferred embodiments of the present utility model. However, the embodiments are not intended to limit the scope of the patent application of the present utility model. All equivalent changes or modifications made under the technical spirit of the present utility model should fall within the patent scope covered by the present utility model.

Claims

1. A variable information panel enclosure with multi-zone independent air ducts, characterized in that: The device includes a housing with a mounting plate on one side. An LED module is mounted on the outer side of the mounting plate, and a power module is mounted on the inner side of the mounting plate. The housing contains several independent heat dissipation zones. Each heat dissipation zone has a removable air guide plate. The air guide plate, the inner wall of the heat dissipation zone, and the back of the corresponding LED module form an air duct. An air inlet and an air outlet are located at the lower part of the air duct. The air guide plate protrudes in the middle and is close to the power module. An axial flow fan system is located outside the air outlet.

2. The variable information board enclosure with multi-zone independent air ducts according to claim 1, characterized in that: The air inlet is equipped with a detachable air intake grille, and the air intake grille has a placement groove in which dustproof filter cotton is placed.

3. The variable information panel housing with multi-zone independent air ducts according to claim 1, characterized in that: The axial flow fan system includes an axial flow fan, a controller, and a temperature sensor. Both the axial flow fan and the temperature sensor are connected to the controller. The controller controls the airflow speed of the axial flow fan based on the temperature detected by the temperature sensor. The temperature sensor is installed in the corresponding partition.

4. The variable information panel housing with multi-zone independent air ducts according to claim 3, characterized in that: The axial flow fan is connected to the housing via rubber gaskets.

5. The variable information panel housing with multi-zone independent air ducts according to claim 1, characterized in that: Each of the aforementioned heat dissipation zones is equipped with a corresponding heat-insulated access door.

6. The variable information panel housing with multi-zone independent air ducts according to claim 5, characterized in that: The housing is provided with a first water-blocking edge and a second water-blocking edge. The first water-blocking edge is located above the LED module, and the second water-blocking edge is located above the heat-insulated inspection door.

7. The variable information panel housing with multi-zone independent air ducts according to claim 1, characterized in that: The enclosure is provided with one or more partitions, which are vertically arranged, and the heat dissipation zone is formed inside the enclosure through the partitions.

8. The variable information panel housing with multi-zone independent air ducts according to claim 7, characterized in that: Each of the partitions is provided with an elastic thermally conductive pad between itself and the inner side wall of the box.

9. The variable information panel housing with multi-zone independent air ducts according to claim 1, characterized in that: A dust filter is installed at the exhaust vent.

Images