Ventilation structure of distribution box

Abstract

The utility model discloses a ventilation structure of a distribution box, which comprises a distribution box body, two ventilation windows are respectively arranged on a left side plate and a right side plate of the distribution box body, and each ventilation window comprises an inner ventilation window and an outer ventilation window; the outer ventilation window is provided with wavy outer water blocking strips, the inner ventilation window is provided with wavy inner water blocking strips, and the inner water blocking strips and the outer water blocking strips are connected in a staggered mode. Ventilation gaps are arranged around a top cover of the distribution box body, an inverted F-shaped clamping portion is arranged on the upper edge of a side plate, a protruding portion matched with the clamping portion is arranged on the inner side of the top cover, and one end, close to the clamping portion, of the protruding portion is lower than the upper edge of the clamping portion. Through staggered assembly of the inner ventilation window and the outer ventilation window and the design of the water blocking strips, rainwater is effectively prevented from entering; the top cover ventilation gap is matched with the clamping part and the protruding part, it is ensured that the top cover is firmly installed, and rainwater is prevented from permeating. The overall structure is convenient to install, firm in connection, convenient to maintain and convenient for part replacement, is suitable for ventilation and heat dissipation of the distribution box in various scenes, and particularly has excellent performance in environments with relatively high humidity and high heat dissipation requirements.

Description

Technical Field

[0001] This utility model relates to the technical field of ventilation structure in distribution boxes, and in particular to a ventilation structure for distribution boxes. Background Technology

[0002] Distribution boxes generate heat during operation, requiring a good ventilation structure for heat dissipation. However, existing distribution box ventilation structures have several problems, such as poor waterproofing allowing rainwater to enter the box and affecting normal equipment operation; low ventilation efficiency hindering effective heat dissipation, reducing the lifespan and operational stability of the distribution box; furthermore, some ventilation structures are complex in design, inconvenient to install, and prone to component loosening or damage during use, increasing maintenance costs and workload.

[0003] Therefore, a distribution box ventilation structure that can effectively solve the above problems is needed. Utility Model Content

[0004] The purpose of this utility model is to provide a ventilation structure for a power distribution box, thereby solving the aforementioned problems existing in the prior art.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0006] A ventilation structure for a distribution box, comprising the distribution box body;

[0007] The distribution box body has two ventilation windows on each of its left and right side panels. Each ventilation window includes an inner ventilation window and an outer ventilation window. The outer ventilation window is equipped with a wavy outer water-blocking strip, and the inner ventilation window is equipped with a wavy inner water-blocking strip. The inner and outer water-blocking blades are connected to each other in an alternating manner.

[0008] The top cover of the distribution box body is provided with ventilation gaps around its perimeter. The upper edge of the side plate of the distribution box body is provided with a locking part in the shape of an inverted F. The inner side of the top cover is provided with a protrusion that cooperates with the locking part. The end of the protrusion near the locking part is lower than the upper edge of the locking part.

[0009] In some specific embodiments, ventilation openings are provided at the bottom of the external ventilation window;

[0010] The top of the internal ventilation window has a ventilation hole that is higher than the ventilation opening of the external ventilation window.

[0011] In some specific embodiments, a crossbeam is installed above the door panel and back panel of the distribution box body. A groove is provided on the crossbeam to cooperate with the ventilation grille. Multiple ventilation holes are evenly distributed along the length of the ventilation grille. The ventilation grille is installed below the top cover covered by the edge of the top cover of the distribution box.

[0012] In some specific embodiments, the internal ventilation windows and external ventilation windows are assembled in an alternating manner and fixed to the side plate of the distribution box by bolts.

[0013] In some specific embodiments, the bottom ends of the inner and outer ventilation windows of the ventilation window are provided with assembly positioning parts to prevent inverted installation.

[0014] In some specific embodiments, the ventilation gap is rectangular or wavy in shape, with a width of 2-10 mm and a length of 100-500 mm.

[0015] In some specific embodiments, the wave-shaped structure of the inner water-blocking strip of the inner ventilation window and the outer water-blocking strip of the outer ventilation window adopts a streamlined design.

[0016] In some specific embodiments, the inclination angle of the ventilation holes of the ventilation grille is 30-60 degrees.

[0017] In some specific embodiments, the bottom ventilation opening of the external ventilation window is shaped like a louver.

[0018] The ventilation holes of the internal ventilation window are equipped with filters;

[0019] A deflector plate is installed at the ventilation gap of the top cover.

[0020] In some specific embodiments, the crossbeam is fixed to the door panel and back panel by welding or bolting.

[0021] The beneficial effects of this utility model are as follows: This utility model discloses a ventilation structure for a distribution box, including a distribution box body; two ventilation windows are provided on each of the left and right side plates of the distribution box body, each ventilation window including an inner ventilation window and an outer ventilation window, the outer ventilation window is provided with a wavy outer water-blocking strip, the inner ventilation window is provided with a wavy inner water-blocking strip, and the inner and outer water-blocking blades are interlaced; ventilation gaps are provided around the top cover of the distribution box body, and a locking part in the shape of an inverted F is provided on the upper edge of the side plate of the distribution box body, and a protrusion that cooperates with the locking part is provided on the inner side of the top cover, the end of the protrusion near the locking part being lower than the upper edge of the locking part. The ventilation structure of the distribution box of this utility model has the following advantages:

[0022] Excellent waterproof performance: The design of alternating internal and external ventilation windows and wavy water-blocking strips effectively prevents rainwater from entering the distribution box, ensuring the normal operation of the equipment in humid environments.

[0023] Highly efficient ventilation and heat dissipation: The multi-layer ventilation window structure and the ventilation gaps on the top cover, combined with the inclined ventilation holes of the ventilation grille, optimize the airflow path, improve heat dissipation efficiency, and extend the service life of the distribution box.

[0024] Stable installation structure: The engagement of the locking part and the protrusion part ensures that the top cover is firmly installed and prevents rainwater from seeping in; the connection between the crossbeam and the ventilation grille is simple and reliable, which improves the stability of the entire ventilation structure.

[0025] Convenient installation and maintenance: The structural design of the ventilation window and ventilation grille facilitates installation and disassembly, and the assembly positioning part prevents inverted installation, reducing maintenance workload and costs.

[0026] Highly adaptable: Suitable for various outdoor and indoor distribution boxes, especially performing well in environments with high humidity and high heat dissipation requirements, and has broad application prospects. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the ventilation structure of a distribution box according to this utility model;

[0028] Figure 2 This is a schematic diagram of another embodiment of the present invention;

[0029] Figure 3 This is a structural schematic diagram of another embodiment of the present utility model;

[0030] Figure 4 This is a structural schematic diagram of another embodiment of the present utility model;

[0031] Figure 5 This is a schematic diagram of the assembled structure of the water-blocking strips for the inner and outer windows of this utility model;

[0032] Figure 6 This is a schematic diagram of the connection between the crossbeam and the ventilation grille of this utility model;

[0033] Figure 7 This is a schematic diagram of the structure of the engaging part and the protruding part of this utility model after combination;

[0034] Figure 8 This is a structural schematic diagram of the ventilation grille of this utility model;

[0035] Figure 9 This is a schematic diagram of the assembly and positioning part of this utility model;

[0036] Figure 10 This is a structural schematic diagram of the ventilation window of this utility model, showing its front, left, and rear views;

[0037] Figure 11 This is a structural schematic diagram of the internal ventilation window and the external ventilation window of this utility model.

[0038] In the attached diagram: 1. Distribution box body; 2. Ventilation window; 21. Internal ventilation window; 22. External ventilation window;

[0039] 23. Outer water-blocking strip; 24. Inner water-blocking strip; 25. Assembly positioning part; 3. Ventilation gap; 31. Engaging part; 32. Protrusion part; 4. Crossbeam; 5. Ventilation grille; 51. Ventilation hole; 11. Side panel; 12. Top cover; 13. Door panel; 14. Back panel. Detailed Implementation

[0040] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the scope of the present utility model.

[0041] Reference Figures 1-11 The diagram shows a distribution box ventilation structure, which includes a distribution box body 1;

[0042] Two ventilation windows 2 are provided on each of the left and right side plates 11 of the distribution box body 1. Each ventilation window 2 includes an inner ventilation window 21 and an outer ventilation window 22. The outer ventilation window 22 is provided with a wavy outer water-blocking strip 23, and the inner ventilation window 21 is provided with a wavy inner water-blocking strip 24. The inner water-blocking blades and the outer water-blocking blades are connected to each other in an alternating manner.

[0043] The top cover 12 of the distribution box body 1 is provided with ventilation gaps 3 around its perimeter. The upper edge of the side plate 11 of the distribution box body 1 is provided with a locking part 31, which is inverted F-shaped. The inner side of the top cover 12 is provided with a protrusion 32 that cooperates with the locking part. The end of the protrusion near the locking part is lower than the upper edge of the locking part 31.

[0044] The following is a detailed description of the ventilation structure of the above-mentioned distribution box in this embodiment:

[0045] Distribution box body and side panels

[0046] The main body 1 of the distribution box is the basic carrier of the entire ventilation structure, and two ventilation windows 2 are provided on each of its two side panels 11. This layout allows ventilation to come from both sides of the distribution box, increasing the ventilation area and efficiency.

[0047] Composition and connection of ventilation windows

[0048] Each ventilation window 2 includes an inner ventilation window 21 and an outer ventilation window 22. The outer ventilation window 22 is located outside the inner ventilation window 21, and the two are assembled in an alternating manner and fixed to the side plate 11 of the distribution box with bolts. This alternating assembly method can increase the ventilation path and resistance, and prevent rainwater from the outside from directly entering the interior of the distribution box.

[0049] The exterior ventilation window 22 is equipped with a wavy outer water-blocking strip 23, and the interior ventilation window 21 is equipped with a wavy inner water-blocking strip 24. The wavy water-blocking strip design effectively prevents rainwater intrusion. When rainwater falls on the exterior ventilation window 22, the wavy outer water-blocking strip 23 prevents the rainwater from directly entering along the ventilation window, forcing the rainwater to flow down in a wavy shape. Similarly, the inner water-blocking strip 24 on the interior ventilation window 21 further blocks any rainwater that may seep in, ensuring the dryness of the inside of the electrical distribution box.

[0050] Top cover and ventilation gap design

[0051] The top cover 12 of the distribution box body 1 is provided with ventilation gaps 3 around its perimeter. The ventilation gaps 3 can be rectangular or wavy in shape, with a width of 2-10 mm and a length of 100-500 mm. This design ensures air circulation while preventing rainwater from entering directly from the top.

[0052] Connection relationship between the engaging part and the protruding part

[0053] The upper edge of the side plate 11 of the distribution box body 1 is provided with a locking part 31, which is inverted F-shaped. The inner side of the top cover 12 is provided with a protrusion 32 that cooperates with the locking part. When the top cover 12 is installed on the side plate 11, the protrusion 32 cooperates with the locking part 31, so that the top cover 12 is tightly fixed on the side plate 11. Moreover, the end of the protrusion near the locking part is lower than the upper edge of the locking part 31, which can prevent rainwater from seeping in from the gap between the top cover 12 and the side plate 11.

[0054] Through the connection relationships and placement of the above-mentioned structures, the ventilation structure of this distribution box can effectively achieve ventilation and heat dissipation, while preventing rainwater from entering the distribution box and ensuring the safe operation of the power distribution equipment.

[0055] In some specific embodiments, the bottom of the external ventilation window 22 is provided with a ventilation opening; the bottom of the internal ventilation window 21 is provided with a ventilation opening and is higher than the ventilation opening of the external ventilation window 22.

[0056] In this embodiment, the external ventilation window 22 and the internal ventilation window 21 are assembled in an alternating manner and fixed to the side plate 11 of the distribution box by bolts. This connection method allows the two to fit together tightly and form an integrated ventilation structure.

[0057] The outer ventilation window 22 has a ventilation opening at its bottom, while the inner ventilation window 21 has a ventilation opening at its top, which is higher than the ventilation opening of the outer ventilation window 22. This design allows air to enter from the bottom of the outer ventilation window 22, pass through the staggered space between the inner and outer ventilation windows 21, and then exit from the ventilation opening of the inner ventilation window 21, forming good air convection and improving ventilation efficiency. At the same time, the ventilation opening of the inner ventilation window 21 is higher than the ventilation opening of the outer ventilation window 22, which can prevent rainwater from flowing back into the distribution box through the ventilation opening of the inner ventilation window 21.

[0058] In some specific embodiments, a crossbeam 4 is installed above the door panel 13 and the back panel 14 of the distribution box body 1. A groove that matches the ventilation grille 5 is provided on the crossbeam 4. Multiple ventilation holes 51 are evenly distributed along the length of the ventilation grille 5. The ventilation grille 5 is installed below the top cover 12 covered by the edge of the top cover 12 of the distribution box.

[0059] A crossbeam 4 is installed above the door panel 13 and the back panel 14 of the distribution box body 1. The crossbeam 4 has a groove that matches the ventilation grille 5. The ventilation grille 5 is installed below the top cover 12 covered by the edge of the top cover 12 of the distribution box.

[0060] Connection relationship: The crossbeam 4 is fixed to the door panel 13 and the back panel 14 by welding or bolting. The ventilation grille 5 is connected to the crossbeam 4 by groove matching, so that the ventilation grille 5 is stably installed on the crossbeam 4.

[0061] Function and effect: The crossbeam 4 provides a mounting base for the ventilation grille 5, increasing the stability of the ventilation grille 5 installation. Multiple ventilation holes 51 with an inclination angle of 30-60 degrees are evenly distributed along the length of the ventilation grille 5. This design further increases the ventilation area and improves heat dissipation efficiency. At the same time, the inclination of the ventilation holes 51 also guides the airflow direction, optimizing the ventilation effect.

[0062] In some specific embodiments, the inner ventilation window 21 and the outer ventilation window 22 are assembled in an alternating manner and fixed to the side plate 11 of the distribution box by bolts.

[0063] In some specific embodiments, the bottom ends of the inner ventilation window 21 and the outer ventilation window 22 of the ventilation window 2 are also provided with assembly positioning parts 25 to prevent inverted installation.

[0064] The assembly positioning part 25 is opened at the bottom of the inner ventilation window 21 and the outer ventilation window 22, and plays a positioning role by cooperating with each other through specific shapes or structures.

[0065] The assembly positioning part 25 can effectively prevent the ventilation window from being installed upside down during the installation process, ensuring the correct installation direction of the ventilation window, thereby ensuring that the waterproof and ventilation functions of the ventilation window can be performed normally.

[0066] In some specific embodiments, the ventilation gap 3 is rectangular or wavy in shape, with a width of 2-10 mm and a length of 100-500 mm.

[0067] In this embodiment, ventilation gaps 3 are provided around the top cover 12 of the distribution box body 1.

[0068] The ventilation gap 3 and the top cover 12 of the distribution box body 1 form an integral ventilation structure, and air can circulate around the top cover 12 through the ventilation gap 3.

[0069] The ventilation gap 3 is rectangular or wavy in shape, with a width of 2-10 mm and a length of 100-500 mm. This design ensures air circulation while preventing rainwater from entering the distribution box in large quantities through the ventilation gap 3. At the same time, the placement of the ventilation gap 3 around the top cover allows air to enter from multiple directions, improving the uniformity and efficiency of ventilation.

[0070] In some specific embodiments, the wave-shaped structure of the inner water-blocking strip of the inner ventilation window 21 and the outer water-blocking strip of the outer ventilation window 22 adopts a streamlined design.

[0071] The inner water-blocking strip of the inner ventilation window 21 and the outer water-blocking strip of the outer ventilation window 22 are respectively installed on the inner ventilation window 21 and the outer ventilation window 22.

[0072] The inner and outer water-blocking strips are connected to the inner ventilation window 21 and the outer ventilation window 22 respectively, forming a wave-shaped structure, and the inner and outer water-blocking blades are interlaced and connected to each other.

[0073] The wave-shaped structure of the inner water-blocking strip of the inner ventilation window 21 and the outer water-blocking strip of the outer ventilation window 22 adopts a streamlined design. This design can better guide the flow direction of rainwater, so that when rainwater encounters the water-blocking strip, it can flow smoothly down the streamlined surface and will not easily enter the inside of the distribution box, further enhancing the waterproof performance of the ventilation structure.

[0074] In some specific embodiments, the inclination angle of the ventilation holes 51 of the ventilation grille 5 is 30-60 degrees.

[0075] In this embodiment, it should be noted that the inclined ventilation holes can change the direction of airflow into the distribution box, making it more in line with aerodynamic principles. When cold external air enters through the ventilation holes, the inclined angle guides the airflow along a specific path, usually towards the upper part of the distribution box or a specific area, thereby enhancing air convection and improving heat dissipation efficiency.

[0076] Increased ventilation area: Compared to vertical ventilation holes, angled ventilation holes can provide a larger effective ventilation area within the same space. This allows more air to enter and exit the distribution box in the same amount of time, accelerating air exchange between the inside and outside of the box and further improving ventilation and heat dissipation capabilities.

[0077] Improve waterproof performance

[0078] Preventing rainwater intrusion: The angled ventilation holes effectively prevent rainwater from directly entering. When rainwater impacts the angled ventilation holes, it is blocked and guided by the hole walls, changing its original direction of movement. Due to the angle, the kinetic energy of the rainwater is partially dispersed and canceled out, making it difficult for it to enter the distribution box perpendicular to the ventilation hole. The angled hole walls guide most of the rainwater to the outside of the hole, allowing it to slide down the slope and drain out, thus effectively preventing rainwater from directly entering the ventilation holes. This enhances the waterproof effect of the ventilation structure.

[0079] Reduced condensation: The angled vents help reduce condensation around the vents. Because the angled surface allows for smoother airflow, condensation is less likely to accumulate at the vents, reducing the risk of condensation entering the distribution box and further ensuring the normal operation of electrical equipment.

[0080] In some specific embodiments, the bottom ventilation opening of the external ventilation window 22 is shaped like a louver; a filter screen is provided around the ventilation opening of the internal ventilation window 21; and a guide plate is provided at the ventilation gap 3 of the top cover 12. The guide plate can be designed as an inclined smooth surface.

[0081] Further explanation of the airflow guiding process of the deflector:

[0082] When rainwater falls on the top cover 12 and attempts to enter the distribution box through the ventilation gap 3, the deflector plate comes into contact with the rainwater. Because the deflector plate is inclined, the rainwater flows downwards along its inclined surface under the influence of gravity. The surface of the deflector plate is typically smooth, which reduces resistance to the flow of rainwater, allowing it to slide down more smoothly. The rainwater is guided by the deflector plate to the outer edge of the ventilation gap 3, where it drips or drains, thus preventing rainwater from entering the interior of the ventilation gap 3.

[0083] Effects

[0084] Effectively prevents rainwater intrusion: By changing the flow direction of rainwater, the deflector can guide rainwater to the outside, preventing rainwater from entering the distribution box along the ventilation gap 3. This greatly improves the waterproof performance of the ventilation structure, ensuring that the electrical components inside the distribution box can work normally in humid weather or heavy rain conditions, and avoiding short circuits, corrosion and other malfunctions caused by water ingress.

[0085] The ventilation function is protected and can function normally. While preventing rainwater from entering, the deflector does not significantly obstruct airflow, thus allowing the ventilation gap 3 to continuously and effectively exchange air, maintain the heat dissipation and ventilation effect inside the distribution box, and ensure that electrical components operate in a suitable temperature environment.

[0086] In some specific embodiments, the crossbeam 4 is fixed to the door panel 13 and the back panel 14 by welding or bolting.

[0087] In this embodiment, the ventilation holes 51 of the ventilation grille 5 are provided on the ventilation grille 5, the bottom ventilation opening of the outer ventilation window 22 is provided at the bottom of the outer ventilation window 22, the ventilation holes of the inner ventilation window 21 are surrounded by a filter screen, and the ventilation gap 3 of the top cover 12 is provided with a guide plate.

[0088] Ventilation holes 51 are evenly distributed along the length of the ventilation grille 5, a filter screen is installed around the ventilation holes of the inner ventilation window 21, and a baffle plate is installed at the ventilation gap 3 of the top cover 12.

[0089] The bottom ventilation opening of the external ventilation window 22 is shaped like a louver, which further prevents rainwater from entering while allowing air circulation. The ventilation opening of the internal ventilation window 21 is surrounded by a filter screen to filter out dust and impurities from the air, preventing them from entering the distribution box and protecting electrical components. The deflector plate at the ventilation gap 3 of the top cover 12 guides rainwater entering the ventilation gap 3 to the outside, preventing rainwater from flowing into the distribution box along the ventilation gap 3 and improving the waterproof performance of the entire ventilation structure.

[0090] Working principle of this utility model

[0091] The ventilation structure of the distribution box of this utility model mainly relies on natural air convection and the special design of each component to achieve ventilation, heat dissipation and waterproofing functions. Its specific working principle is as follows:

[0092] Ventilation and heat dissipation principle

[0093] When electrical components inside the distribution box operate, they generate heat, causing the air temperature inside the box to rise. Hot air, being less dense, naturally rises and eventually escapes through the ventilation gaps around the top cover of the distribution box. Simultaneously, the relatively denser outside air, being cooler, enters the box through ventilation windows on the left and right side panels under atmospheric pressure. The outer ventilation window has a ventilation opening at its bottom, while the inner ventilation window has a ventilation opening at its top, higher than the outer ventilation window's opening. This design allows cool outside air to smoothly enter through the ventilation opening at the bottom of the outer ventilation window, flow along the staggered space between the inner and outer ventilation windows, and finally enter the distribution box through the ventilation opening of the inner ventilation window, creating good air convection circulation and effectively dissipating heat from the inside of the distribution box.

[0094] In addition, ventilation grilles are installed on the crossbeams above the main door panel and back panel of the distribution box. These grilles have multiple ventilation holes evenly distributed along their length, with an inclination angle of 30-60 degrees. These inclination holes further guide airflow, increase ventilation area, and improve heat dissipation efficiency, allowing hot air inside the distribution box to be expelled more quickly. This maintains the electrical components inside the box in a relatively low-temperature operating environment, ensuring their stable operation.

[0095] Waterproofing principle

[0096] The exterior ventilation window is equipped with a wavy outer water-blocking strip, while the interior ventilation window has a wavy inner water-blocking strip, with the two strips interlocking. When rainwater falls on the ventilation window, the wavy strips create multiple barriers, disrupting the straight flow path of the rainwater. This causes the rainwater to be diverted and slide off the wavy surface, making it difficult for it to directly enter the distribution box through the ventilation window. Simultaneously, the ventilation opening of the interior ventilation window is higher than that of the exterior ventilation window. Even if a small amount of rainwater seeps through the exterior ventilation window, it will be blocked by the water-blocking strip of the interior ventilation window, preventing it from easily entering the box through the ventilation opening. This effectively prevents rainwater from entering the distribution box through the ventilation windows.

[0097] The distribution box body has ventilation gaps around its top cover, and an inverted F-shaped locking part on the upper edge of the side panel. The inner side of the top cover has a protrusion that mates with the locking part, with the end of the protrusion near the locking part lower than its upper edge. This structure ensures a tight fit between the top cover and the side panel, preventing rainwater from seeping in through the joint. Furthermore, deflectors are installed at the ventilation gaps of the top cover. When rainwater falls on the top cover and attempts to enter through the ventilation gaps, the deflectors guide the rainwater to the outside, allowing it to flow down the deflectors and further preventing rainwater from entering the distribution box through the ventilation gaps around the top cover.

[0098] The bottom ventilation opening of the external ventilation window is designed with a louvered structure, which ensures air circulation while effectively preventing rainwater from entering. The ventilation opening of the internal ventilation window is surrounded by a filter screen. This filter screen not only filters dust and impurities from the air but also helps to prevent rainwater from flowing back into the distribution box through the ventilation opening of the internal ventilation window. Through the coordinated action of these components, the ventilation structure of this distribution box achieves good ventilation and heat dissipation while effectively preventing rainwater from entering the distribution box, thus ensuring the safe operation of electrical equipment.

[0099] Example 1

[0100] In a factory workshop electrical distribution box renovation project, the workshop environment had high humidity, and the electrical distribution box required high heat dissipation during operation. Therefore, the ventilation structure of the electrical distribution box of this utility model was adopted.

[0101] First, install two ventilation windows on each of the left and right side panels of the distribution box. The inner and outer ventilation windows of each ventilation window are assembled in an alternating pattern and fixed to the side panel with bolts. The outer ventilation window is equipped with a wavy outer water-blocking strip, and the inner ventilation window is equipped with a wavy inner water-blocking strip, with the inner and outer water-blocking strips alternating.

[0102] Then, ventilation gaps are set around the top cover of the distribution box body, and an inverted F-shaped locking part is installed on the upper edge of the side plate. A protrusion that matches the locking part is installed on the inside of the top cover to ensure that the top cover is installed firmly.

[0103] After a period of use, the temperature of the electrical components inside the distribution box was effectively controlled, and there was no damage to the equipment due to rainwater entering. The ventilation, heat dissipation and waterproofing effects were significant.

[0104] Example 2

[0105] In a new construction project for the distribution box of an outdoor communication base station, the base station is located in a rainy area, requiring extremely high waterproof performance from the distribution box. Simultaneously, due to the large amount of heat generated during equipment operation, good heat dissipation is also necessary. Therefore, the ventilation structure of the distribution box described in this utility model was adopted.

[0106] During installation, in addition to the basic ventilation windows and roof ventilation gaps, a louvered structure was installed at the bottom ventilation opening of the external ventilation window to further enhance waterproof performance. Meanwhile, filters were installed around the ventilation holes of the internal ventilation window to prevent dust from entering.

[0107] During subsequent use, even in heavy rain, the inside of the distribution box remained dry, the equipment operated stably, and heat dissipation was good, meeting the requirements for outdoor communication base stations.

[0108] By adopting the above-disclosed technical solution of this utility model, the following beneficial effects are obtained:

[0109] The ventilation structure of the distribution box of this utility model has the following significant advantages:

[0110] Excellent waterproof performance: The structure features alternating internal and external ventilation windows, along with wavy internal and external water-blocking strips, creating multiple barriers to effectively prevent rainwater from entering the distribution box through the side ventilation windows. The ventilation gaps around the top cover, combined with the inverted F-shaped locking mechanism and protrusions, ensure a more secure installation, preventing rainwater seepage from the top and ensuring the safe operation of the distribution box outdoors or in humid environments.

[0111] High heat dissipation efficiency: Two ventilation windows are provided on each of the left and right side panels to increase the ventilation area; the ventilation openings at the bottom of the outer ventilation window and the ventilation openings at the bottom of the inner ventilation window, which are higher than the outer ventilation window, form a good air convection path, accelerating the exhaust of hot air. Ventilation grilles with inclined ventilation holes are installed on the crossbeam to further expand the ventilation range, optimize the airflow direction, improve heat dissipation efficiency, ensure the stable operation of electrical components in the distribution box, and extend their service life.

[0112] Stable and reliable structure: The internal and external ventilation windows are fixed to the side plate of the distribution box with bolts, making the connection firm and not easy to loosen; the crossbeams are connected to the door panel and back panel by welding or bolting, which enhances the overall structural stability, ensures the reliability of the ventilation structure during long-term use, and reduces the risk of ventilation failure due to loose parts.

[0113] Easy installation and maintenance: The design of the ventilation windows and grilles facilitates disassembly and installation, and the assembly positioning part effectively prevents inverted installation, simplifying the installation process and reducing the installation error rate. When maintenance or replacement of parts is required, the corresponding parts can be quickly disassembled, reducing maintenance workload and costs and improving work efficiency.

[0114] High adaptability: The ventilation structure of this utility model for distribution boxes is suitable for various outdoor and indoor distribution boxes, especially for places with high humidity and high heat dissipation requirements, such as industrial plants, commercial buildings, residential communities, and communication base stations. Whether it is the installation of new distribution boxes or the renovation and upgrading of old distribution boxes, this ventilation structure can be flexibly applied to meet the ventilation and heat dissipation needs in different scenarios, and has broad application prospects and practical value.

[0115] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A ventilation structure for a distribution box, characterized in that: Including the main body of the distribution box (1); The power distribution box body (1) has two ventilation windows (2) on each of the left and right side plates (11). Each ventilation window (2) includes an inner ventilation window (21) and an outer ventilation window (22). The outer ventilation window (22) is provided with a wavy outer water-blocking strip (23), and the inner ventilation window (21) is provided with a wavy inner water-blocking strip (24). The inner water-blocking blades and the outer water-blocking blades are interleaved and connected. The top cover (12) of the power distribution box body (1) is provided with ventilation gaps (3) around its perimeter. The upper edge of the side plate (11) of the power distribution box body (1) is provided with a locking part (31) in the shape of an inverted F. The inner side of the top cover (12) is provided with a protrusion (32) that cooperates with the locking part. The end of the protrusion near the locking part is lower than the upper edge of the locking part (31).

2. The ventilation structure of the distribution box according to claim 1, characterized in that, The bottom of the external ventilation window (22) is provided with a ventilation opening; The top of the inner ventilation window (21) has a ventilation hole, which is higher than the ventilation opening of the outer ventilation window (22).

3. The ventilation structure of the distribution box according to claim 2, characterized in that, The distribution box body (1) has a crossbeam (4) installed above the door panel (13) and back panel (14). The crossbeam (4) has a groove that matches the ventilation grille (5). Multiple ventilation holes (51) are evenly distributed along the length of the ventilation grille (5). The ventilation grille (5) is installed below the top cover (12) covered by the edge of the top cover (12) of the distribution box.

4. The ventilation structure of the distribution box according to claim 1, characterized in that, The internal ventilation window (21) and the external ventilation window (22) are assembled in an alternating manner and fixed to the side plate (11) of the distribution box by bolts.

5. The ventilation structure of the distribution box according to claim 1, characterized in that, The bottom ends of the inner ventilation window (21) and the outer ventilation window (22) of the ventilation window (2) are also provided with assembly positioning parts (25) to prevent inverted installation.

6. The ventilation structure of the distribution box according to claim 1, characterized in that, The ventilation gap (3) is rectangular or wavy in shape, with a width of 2-10 mm and a length of 100-500 mm.

7. The ventilation structure of the distribution box according to claim 1, characterized in that, The wave-shaped structure of the inner water-blocking strip of the inner ventilation window (21) and the outer water-blocking strip of the outer ventilation window (22) adopts a streamlined design.

8. The ventilation structure of the distribution box according to claim 3, characterized in that, The inclination angle of the ventilation holes (51) of the ventilation grille (5) is 30-60 degrees.

9. The ventilation structure of the distribution box according to claim 1, characterized in that: The bottom ventilation opening of the external ventilation window (22) is shaped like a louver. The ventilation holes of the internal ventilation window (21) are surrounded by a filter screen; A baffle plate is provided at the ventilation gap (3) of the top cover (12).

10. The ventilation structure of the distribution box according to claim 3, characterized in that, The crossbeam (4) is fixed to the door panel (13) and the back panel (14) by welding or bolting.

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