Waterproof shell and electrical equipment

Abstract

The utility model discloses a waterproof housing and electrical equipment, relates to the electrical equipment waterproof technical field, the waterproof housing comprises a housing and a cover body, the side plate of the housing is provided with an air inlet hole, the bottom plate of the housing is provided with a water dripping hole, the housing is internally provided with a coaming, the coaming is arranged around the air inlet hole and the water dripping hole, and the cover body is arranged on the cover body. A water retaining cavity is defined between the coaming and the inner wall of the shell; the cover body covers the surrounding plate to cover the water retaining cavity, and an air outlet hole is formed in the cover body or the surrounding plate and is used for facing a heating element. When liquid is splashed in from the air inlet hole, the liquid is blocked by the coaming and the cover body to be attached to the inner wall of the water blocking cavity, naturally flows to the bottom under the action of gravity and is discharged through the water dripping hole in the bottom, and therefore the problem that the liquid splashed in from the air inlet hole acts on internal elements, and the internal elements are corroded or short-circuited is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of electrical appliance waterproofing, and particularly relates to a waterproof housing and an electrical appliance device. Background Art

[0002] When an electrical appliance device is working, its internal components will generate heat. To avoid overheating of the components, air intake holes are usually provided on the housing of the device for heat dissipation. Moreover, portable electrical appliance devices are usually present in people's daily lives. In some common situations in life, there are often some liquids that may come into contact with the electrical appliance device, such as daily drinking water, coffee and other liquids, and the juice generated by the human body during exercise, etc. These may all enter the interior of the electrical appliance device through the air intake holes, and follow the heat dissipation channels into the heating elements, thereby causing corrosion or short circuit to the internal heating elements such as chips and circuit boards, affecting the operating performance of the device. Summary of the Utility Model

[0003] The main object of the utility model is to propose a waterproof housing and an electrical appliance device, aiming to solve the problem that liquid enters through the air intake hole and acts on the internal components, causing corrosion or short circuit to the internal components.

[0004] To achieve the above object, the waterproof housing proposed by the utility model includes a housing and a cover body. An air intake hole is provided on the side plate of the housing, and a water dripping hole is provided on the bottom plate of the housing. A surrounding plate is arranged inside the housing, and the surrounding plate is arranged around the air intake hole and the water dripping hole. A water blocking cavity is formed by enclosing between the surrounding plate and the inner wall of the housing; the cover body is covered on the surrounding plate to cover the water blocking cavity, and an air outlet hole is provided on the cover body or the surrounding plate, and the air outlet hole is arranged towards the heating element.

[0005] In an embodiment, the axial direction of the air outlet hole is perpendicular to the axial direction of the air intake hole, or the axial direction of the air outlet hole is parallel to the axial direction of the air intake hole, and the air outlet hole and the air intake hole are arranged in a staggered manner.

[0006] In an embodiment, a retaining wall is arranged in the water blocking cavity to divide the water blocking cavity into a first chamber and a second chamber. An air passing hole is provided on the retaining wall to communicate the first chamber and the second chamber, and the first chamber is communicated with the air intake hole, the second chamber is communicated with the air outlet hole, and the water dripping hole is arranged on the bottom wall of the first chamber, or the water dripping hole is arranged on the bottom walls of the first chamber and the second chamber.

[0007] In an embodiment, the height where the air outlet hole is located is higher than the height where the air intake hole is located.

[0008] In one embodiment, the retaining wall includes a first sub-retaining wall, a second sub-retaining wall, and a third sub-retaining wall. The first sub-retaining wall is disposed opposite to the air inlet hole. The second sub-retaining wall and the third sub-retaining wall are respectively bent and disposed at two ends of the first sub-retaining wall, and the second sub-retaining wall and the third sub-retaining wall are disposed back to back. One end of the second sub-retaining wall away from the first sub-retaining wall is connected to the inner wall of the housing, and one end of the third sub-retaining wall away from the first sub-retaining wall is connected to the shroud. The three sub-retaining walls divide the water retaining cavity into a first chamber and a second chamber, and an air passing port is formed in the third sub-retaining wall to communicate the first chamber and the second chamber.

[0009] In one embodiment, the retaining wall includes a first sub-retaining wall, a second sub-retaining wall, and a third sub-retaining wall that enclose three sides. The first sub-retaining wall is disposed opposite to the air inlet hole. The second sub-retaining wall and the third sub-retaining wall are respectively disposed at two ends of the first sub-retaining wall, and the three sub-retaining walls are disposed around the air inlet hole and the water dripping hole. The shroud is disposed around the three sub-retaining walls.

[0010] Wherein, the three sub-retaining walls and the inner wall of the housing enclose to form the first chamber, and the three sub-retaining walls and the three shrouds enclose to form the second chamber. Air passing ports are formed in the second sub-retaining wall and the third sub-retaining wall to communicate the first chamber and the second chamber.

[0011] In one embodiment, a plurality of partition plates are disposed in the second chamber to divide the second chamber into a plurality of air guiding chambers. The top surfaces of the retaining wall and the partition plates are respectively and fittingly disposed with the surface of the cover body. An air guiding port is formed in each partition plate to communicate two adjacent air guiding chambers. The air outlet hole is disposed on the cover body or the shroud and is communicated with the last air guiding chamber.

[0012] In one embodiment, the air guiding ports on adjacent partition plates are disposed at different heights, or the air guiding ports on adjacent partition plates are disposed offset left and right.

[0013] In one embodiment, a plurality of partition plates are disposed in the second chamber to divide the second chamber into a plurality of air guiding chambers. The cover body includes a top plate and a flange disposed at the edge of the top plate. A boss is convexly provided in the enclosed area of the flange on the top plate. A plurality of air guiding grooves are concavely provided on the boss. A partition wall is formed between two adjacent air guiding grooves. The top surface of the shroud is fittingly disposed with the flange. The end surface of the retaining wall is fittingly disposed with the end surface of the boss. The end surface of the partition plate is fittingly disposed with the end surface of the partition wall, so that each air guiding groove is disposed opposite to an air guiding chamber. An air guiding port is formed in the partition plate and / or the partition wall. The air outlet hole is disposed on the cover body or the shroud and is communicated with the last air guiding chamber.

[0014] In one embodiment, the partitions at odd positions are defined as the first group of partitions, the partitions at even positions are defined as the second group of partitions, the partition walls at odd positions are defined as the first group of partition walls, and the partition walls at even positions are defined as the second group of partition walls. Among them, air guiding openings are provided on the first group of partitions and the second group of partition walls, or air guiding openings are provided on the second group of partitions and the first group of partition walls.

[0015] The present utility model further provides an electrical appliance, which includes the waterproof housing proposed above. A heating element is arranged inside the waterproof housing, and the air outlet of the waterproof housing is arranged opposite to the heating element.

[0016] In this waterproof housing, air inlet holes are provided on the side plates of the housing, water dripping holes are provided on the bottom plate of the housing, a surrounding plate is arranged inside the housing, and the surrounding plate surrounds the air inlet holes and the water dripping holes. A water blocking cavity is formed by enclosing between the surrounding plate and the inner wall of the housing; a cover body covers the surrounding plate to cover the water blocking cavity, and air outlet holes are provided on the cover body or the surrounding plate, and the air outlet holes are used to face the heating element. Thus, when liquid splashes in from the air inlet holes, the liquid will be blocked by the surrounding plate and the cover body and will adhere to the inner wall of the water blocking cavity, and will naturally flow to the bottom under the action of gravity and be discharged through the water dripping holes at the bottom, thereby avoiding the problem that the liquid splashing in from the air inlet holes acts on the internal components and causes corrosion or short circuit of the internal components. At the same time, air outlet holes are provided on the cover body or the surrounding plate, and the air flow flowing in from the air inlet holes passes through the water blocking cavity and then blows to the heating element through the air outlet holes, thereby realizing heat dissipation of the heating element. Description of the Drawings

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required to be used in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on the structures shown in these drawings.

[0018] Figure 1 It is a schematic structural diagram of an embodiment of the waterproof housing provided by the present utility model;

[0019] Figure 2 For Figure 1 A schematic structural diagram in another state;

[0020] Figure 3 It is an enlarged view of the surrounding plate in an embodiment of the waterproof housing provided by the present utility model;

[0021] Figure 4 It is an enlarged view of another surrounding plate in an embodiment of the waterproof housing provided by the present utility model;

[0022] Figure 5 This is a schematic structural diagram of the cover in an embodiment of the waterproof housing provided by the present utility model.

[0023] Explanation of the reference numerals in the attached drawings:

[0024] 100, waterproof housing; 1, outer shell; 11, air inlet hole; 12, water dripping hole; 13, surrounding plate; 14, retaining wall; 140, air passing port; 141, first sub-retaining wall; 142, second sub-retaining wall; 143, third sub-retaining wall; 15, partition board; 151, air guiding port; 16, air guiding cavity; 17, mounting post; 2, cover; 20, air outlet hole; 21, top plate; 22, flange; 23, boss; 231, air guiding groove; 232, partition wall; 24, mounting ear.

[0025] The realization of the purpose, functional characteristics and advantages of the present utility model will be further described with reference to the embodiments and the accompanying drawings. Specific embodiments

[0026] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0027] It should be noted that if there are directional indications (such as up, down, left, right, front, back...) in the embodiments of the present utility model, the directional indications are only used to explain the relative positional relationship and movement conditions between components in a specific posture. If the specific posture changes, the directional indications will also change accordingly.

[0028] In addition, if there are descriptions such as "first" and "second" in the embodiments of the present utility model, the descriptions of "first", "second", etc. are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one such feature. In addition, if "and / or" or "and / or" appears throughout the text, its meaning includes three parallel solutions. Taking "A and / or B" as an example, it includes solution A, solution B, or a solution that satisfies both A and B at the same time. In addition, the technical solutions between the embodiments can be combined with each other, but it must be based on the ability of those of ordinary skill in the art to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the protection scope required by the present utility model.

[0029] The present utility model provides a waterproof housing 100.

[0030] Please refer to Figure 1 and Figure 2 , this waterproof housing 100 includes a housing 1 and a cover body 2. An air inlet hole 11 is provided on the side plate of the housing 1, and a water dripping hole 12 is provided on the bottom plate of the housing. A surrounding plate 13 is arranged inside the housing 1, and the surrounding plate 13 is arranged around the air inlet hole 11 and the water dripping hole 12. A water blocking cavity is formed by enclosing between the surrounding plate 13 and the inner wall of the housing 1. The cover body 2 is covered on the surrounding plate 13 to cover the water blocking cavity. An air outlet hole 20 is provided on the cover body 2 or the surrounding plate 13, and the air outlet hole 20 is arranged towards the heating element.

[0031] The equipment housing usually includes a bottom plate, a top plate and side plates. The housing 1 shown in the figure is a schematic diagram after removing the top plate. In order to realize the heat dissipation of the internal structure of the equipment, the traditional housing may be provided with air inlet holes 11 on both the top plate and the side plates for heat dissipation. However, in the living scenario, it is inevitable that some liquids may enter the equipment through the air inlet holes, which may corrode or short-circuit the internal components. In order to avoid this phenomenon, this waterproof housing 100 is provided with an air inlet hole 11 and a water dripping hole 12 on the housing 1. Among them, the air inlet hole 11 is provided on the side plate of the housing 1, and the water dripping hole 12 is provided on the bottom plate of the housing 1. At the same time, a surrounding plate 13 that surrounds the air inlet hole 11 and the water dripping hole 12 is convexly provided on the inner wall of the housing 1. A water blocking cavity is formed between the surrounding plate 13 and the inner wall of the housing 1. A cover body 2 is arranged inside the housing 1, and the cover body 2 is covered on the surrounding plate 13 to cover the water blocking cavity. Subsequently, an air outlet hole 20 is provided on the cover body 2 or the surrounding plate 13 to communicate with the cavity of the housing 1.

[0032] Thus, when a liquid splashes in from the air inlet hole 11, the liquid will be blocked by the surrounding plate 13 and the cover body 2 and will adhere to the inner wall of the water blocking cavity, and will naturally flow to the bottom under the action of gravity and be discharged through the water dripping hole 12 at the bottom, thus avoiding the problem that the liquid splashing in from the air inlet hole 11 directly flows into the internal circuit components along the heat dissipation channel, causing corrosion or short circuit to the internal circuit components. At the same time, an air outlet hole 20 is provided on the cover body 2 or the surrounding plate 13, and the air flow flowing in from the air inlet hole 11 passes through the water blocking cavity and then blows towards the heating element through the air outlet hole 20, so as to realize the heat dissipation of the heating element.

[0033] When the air outlet hole 20 is provided on the cover body 2, the axial direction of the air outlet hole 20 is perpendicular to the axial direction of the air inlet hole 11. At this time, the flow path of the air flow will turn by 90°, increasing the bending number of the flow path of the air flow, thereby increasing the difficulty of the liquid flowing from the air outlet hole 20 to the air inlet hole 11, and better avoiding the liquid from flowing into the heating element.

[0034] When the air outlet 20 is provided on the surrounding plate 13, the axial direction of the air outlet 20 is parallel to the axial direction of the air inlet 11. At this time, the air outlet 20 and the air inlet 11 can be arranged in a staggered manner to avoid the direct inflow and outflow of air, increase the bending number of the air flow path, thereby increasing the difficulty of the liquid flowing from the air outlet 20 to the air inlet 11, and better avoiding the liquid from flowing into the heating element.

[0035] In addition, the height where the air outlet 20 is located should be higher than the height where the air inlet 11 is located to prevent the liquid in the water retaining cavity from flowing out through the air outlet 20.

[0036] It should be noted that, in order to discharge the gas in the housing, an air outlet (not labeled) is provided on the side wall of the housing, and a one-way valve is provided in the air outlet, so as to ensure that the air flow passing through the air outlet can only flow from the inside to the outside, and cannot flow from the outside to the inside, thereby preventing the liquid from splashing into the housing through the air outlet.

[0037] In some embodiments of the present invention, a retaining wall 14 is provided in the water retaining cavity to divide the water retaining cavity into a first chamber and a second chamber. An air passage hole 140 is provided on the retaining wall 14 to communicate the first chamber and the second chamber. The first chamber is communicated with the air inlet 11, the second chamber is communicated with the air outlet 20, and the water dripping hole 12 is provided on the bottom wall of the first chamber, or the water dripping hole 12 is provided on the bottom walls of the first chamber and the second chamber.

[0038] At this time, the air flow path is as follows: after flowing in from the air inlet 11, it flows through the first chamber, the air passage hole 140 and the second chamber in sequence, and finally blows from the air outlet 20 to the heating element. In this embodiment, the retaining wall 14 is provided to divide the water retaining cavity into a first chamber and a second chamber, so that the liquid entering from the air inlet 11 will be blocked by the retaining wall 14 in the first chamber and discharged through the water dripping hole 12 at the bottom of the first chamber. Since the liquid is restricted in the first chamber, it is ensured that the air flow path connected to the air outlet 20 in the second chamber will not be disturbed by the liquid. Moreover, the setting of the second chamber extends the air flow path, increases the chance of the small liquid droplets carried in the air freely settling or adhering to the chamber wall, realizes gas-liquid separation, and prevents the water vapor in the air from entering the heating element along with the air.

[0039] From the above process, it can be seen that a small amount of liquid may also be stored in the second chamber. Therefore, a water dripping hole 12 may also be provided on the bottom wall of the second chamber to discharge the liquid intercepted in the second chamber.

[0040] Among them, the height where the air passage hole 140 is located should be higher than the height where the air inlet 11 is located. With such a design, the rising direction of the gas can be higher than the falling direction of the liquid, so that the liquid stays in the first chamber under the action of gravity, and the gas enters the second chamber from the air passage hole 140 without being affected by gravity, and then is injected into the heating element from the second chamber.

[0041] InFigure 3 In the illustrated embodiment, the retaining wall 14 includes a first sub-retaining wall 141, a second sub-retaining wall 142, and a third sub-retaining wall 143. The first sub-retaining wall 14 is disposed opposite to the air inlet hole 11. The second sub-retaining wall 142 and the third sub-retaining wall 143 are respectively bent and disposed at both ends of the first sub-retaining wall 141, and the second sub-retaining wall 142 and the third sub-retaining wall 143 face away from each other. One end of the second sub-retaining wall 142 away from the first sub-retaining wall 141 is connected to the inner wall of the housing 1, and one end of the third sub-retaining wall 143 away from the first sub-retaining wall 141 is connected to the surrounding plate 13. The three-sided sub-retaining wall 14 divides the water-retaining cavity into a first chamber and a second chamber. An air passage hole 140 is formed in the third sub-retaining wall 143 to communicate the first chamber and the second chamber.

[0042] In Figure 4 In the illustrated embodiment, the retaining wall 14 includes a first sub-retaining wall 141, a second sub-retaining wall 142, and a third sub-retaining wall 143 that enclose three sides. The first sub-retaining wall 141 is disposed opposite to the air inlet hole 11. The second sub-retaining wall 142 and the third sub-retaining wall 143 are respectively disposed at both ends of the first sub-retaining wall 141, and the three-sided sub-retaining wall 14 surrounds the air inlet hole 11 and the water-dripping hole 12. The surrounding plate 13 surrounds the three-sided sub-retaining wall 14. Among them, the three-sided sub-retaining wall 14 and the inner wall of the housing 1 enclose a first chamber, and the three-sided sub-retaining wall 14 and the three-sided surrounding plate 13 enclose a second chamber. Air passage holes 140 are formed in the second sub-retaining wall 142 and the third sub-retaining wall 143 to communicate the first chamber and the second chamber.

[0043] In the actual application process, the design form of the retaining wall 14 can be flexibly changed and is not limited herein.

[0044] Furthermore, a plurality of partition plates 15 may be disposed in the second chamber to divide the second chamber into a plurality of air guiding chambers 16. In one embodiment, the top surfaces of the retaining wall 14 and the partition plates 15 are both attached to the surface of the cover body 2. An air guiding hole 151 is formed in each partition plate 15 to communicate two adjacent air guiding chambers 16. The air outlet hole 20 is disposed on the cover body 2 or the surrounding plate 13 and is communicated with the last air guiding chamber 16.

[0045] In this embodiment, the surrounding plate 13, the retaining wall 14, and the partition plates 15 have the same height. When the cover body 2 is covered on the surrounding plate 13, the top surfaces of the retaining wall 14 and the partition plates 15 are both attached to the surface of the cover body 2, that is, the cover body 2 can seal each air guiding chamber 16. At the same time, an air guiding hole 151 is formed in each partition plate 15 to communicate two adjacent air guiding chambers 16. At this time, the air outlet hole 20 is disposed on the cover body 2 or the surrounding plate 13 and is communicated with the last air guiding chamber 16. At this time, the air flow flows into the first chamber from the air inlet hole 11 and then flows through each air guiding chamber 16 in sequence, and finally flows into the chamber of the housing 1 from the air outlet hole 20 on the side wall of the last air guiding chamber 16. Adding a plurality of air guiding chambers 16 can accommodate liquid multiple times and increase the difficulty of the liquid flowing out of the second chamber.

[0046] Further, the air guiding openings 151 on adjacent partition plates 15 are arranged with height offsets, that is, the air guiding openings 151 on adjacent partition plates 15 are offset in the height direction or the left - right direction of the partition plate 15. Thus, it can be avoided that the liquid goes straight in and out directly in the air guiding cavity 16, and the difficulty for the liquid to flow towards the air outlet hole 20 in the air guiding cavity 16 is increased. Among them, the height where the air guiding opening 151 is located should not be too low, that is, there is a certain distance between the air guiding opening 151 and the bottom plate of the housing, so that each air guiding cavity 16 can store a certain amount of liquid.

[0047] In another embodiment, a plurality of partition plates 15 are arranged in the second chamber to divide the second chamber into a plurality of air guiding cavities 16. Refer to Figure 5 , the cover body 2 includes a top plate 21 and a flange 22 arranged at the edge of the top plate 21. A boss 23 is convexly provided in the enclosed area of the flange 22. A plurality of air guiding grooves 231 are recessed on the boss 23. A partition wall 232 is formed between two adjacent air guiding grooves 231. The top surface of the surrounding plate 13 is attached to the flange 22, the end surface of the retaining wall 14 is attached to the end surface of the boss 23, and the end surface of the partition plate 15 is attached to the end surface of the partition wall 232, so that each air guiding groove 231 is arranged opposite to an air guiding cavity 16. At the same time, air guiding openings 151 are provided on the partition plate 15 and / or the partition wall 232. The air outlet hole 20 is provided on the cover body 2 or the surrounding plate 13 and is communicated with the last air guiding cavity 16.

[0048] In this embodiment, a boss 23 is convexly provided in the enclosed area of the flange 22 of the cover body 2, and a plurality of air guiding grooves 231 are recessed on the boss 23. The number of air guiding grooves 231 is the same as the number of air guiding cavities 16. When the cover body 2 is covered on the surrounding plate 13, the end surface of the surrounding plate 13 is attached to the end surface of the flange 22, the end surface of the retaining wall 14 is attached to the end surface of the boss 23, and the end surface of the partition plate 15 is attached to the end surface of the partition wall 232, so that each air guiding groove 231 is docked with an air guiding cavity 16. At the same time, air guiding openings 151 are provided on the partition plate 15 and / or the partition wall 232 to communicate two adjacent air guiding cavities 16. At this time, the air outlet hole 20 is provided on the cover body 2 or the surrounding plate 13 and is communicated with the last air guiding cavity 16. At this time, the air flow flows through each air guiding cavity 16 in sequence after flowing into the first chamber from the air inlet hole 11, and finally flows into the chamber of the housing 1 from the air outlet hole 20 on the side wall of the last air guiding cavity 16. The arrangement of the air guiding cavities 16 can extend the flow path of the air flow, and at the same time, it can also store the liquid multiple times, so that the liquid is affected by gravity multiple times and stored in the air guiding cavity 16. And in this embodiment, a boss 23 is convexly provided on the cover body 2, and air guiding grooves 231 are recessed on the boss 23 to be docked with the air guiding cavities 16, which can increase the height of the air guiding cavities 16, increase the air passing amount, and both the partition plate 15 and the partition wall 232 can intercept the liquid, further improving the efficiency of intercepting the liquid.

[0049] Define the partition plate 15 at the odd positions as the first group of partition plates, and the partition plate 15 at the even positions as the second group of partition plates. Define the partition wall 232 at the odd positions as the first group of partition walls 232, and the partition wall 232 at the even positions as the second group of partition walls 232. In one embodiment, air guide openings 151 are provided on the first group of partition plates and the second group of partition walls 232, or air guide openings 151 are provided on the second group of partition plates and the first group of partition walls 232.

[0050] For example, a total of four partition plates 15 are provided in the second chamber, which are the first partition plate, the second partition plate, the third partition plate, and the fourth partition plate in sequence from the air inlet end to the air outlet end. Correspondingly, the partition walls 232 are the first partition wall, the second partition wall, the third partition wall, and the fourth partition wall in sequence. Among them, the first partition plate and the third partition plate are the first group of partition plates, and the second partition plate and the fourth partition plate are the second group of partition plates; the first partition wall and the third partition wall are the first group of partition walls, and the second partition wall and the fourth partition wall are the second group of partition walls. Then, air guide openings 151 are provided on the first partition plate, the second partition wall, the third partition plate, and the fourth partition wall in sequence, or air guide openings 151 are provided on the first partition wall, the second partition plate, the third partition wall, and the fourth partition plate in sequence. Thus, the air guide openings 151 can be arranged in a high-low staggered manner, which can prevent the liquid in the air guide chamber 16 from flowing in and out directly, increase the difficulty of the liquid flowing to the air outlet hole 20 in the air guide chamber 16, and thus improve the liquid interception efficiency.

[0051] In the above embodiments, chamfers can be provided on the side walls of the air guide openings 151, and the inclined surfaces formed by the chamfers are arranged towards the air inlet direction. The chamfered inclined surfaces play a guiding role and facilitate the rapid passage of air flow.

[0052] Regarding the installation of the cover body 2, the outer shell 1 is convexly provided with installation posts 17 on the inner wall of the bottom plate. The installation posts 17 are located on the periphery of the enclosure 13. A first fixing hole is provided at the axis of the installation posts 17. The side surface of the cover body 2 is convexly provided with installation ears 24, and a second fixing hole is provided on the installation ears 24. When the cover body 2 is covered on the enclosure 13, the installation ears 24 are in contact with the installation posts 17, and then fasteners (such as screws) can be screwed into the first fixing hole and the second fixing hole to realize the installation of the cover body 2.

[0053] The present utility model also proposes an electrical device, which includes a waterproof housing 100. The specific structure of the waterproof housing 100 refers to the above embodiments. Since this electrical device adopts all the technical solutions of the above embodiments, it at least has all the beneficial effects brought by the technical solutions of the above embodiments, which will not be elaborated here one by one. Among them, a heating element is provided in the waterproof housing 100, and the air outlet hole 20 of the waterproof housing 100 is arranged opposite to the heating element. Thus, the dry air flow blown out from the air outlet hole 20 will directly blow on the heating element, thereby dissipating heat from the heating element.

[0054] The above is only an exemplary embodiment of the present utility model, and does not limit the patent scope of the present utility model. Any equivalent structural transformation made under the technical concept of the present utility model by using the content of the specification and drawings of the present utility model, or any direct / indirect application in other related technical fields, is included in the patent protection scope of the present utility model.

Claims

1. A waterproof housing, characterized in that, Including: A housing, an air inlet is provided on the side plate of the housing, a water dripping hole is provided on the bottom plate of the housing, a surrounding plate is arranged inside the housing, the surrounding plate is arranged around the air inlet and the water dripping hole, and a water retaining cavity is formed by enclosing between the surrounding plate and the inner wall of the housing; A cover body, the cover body is covered on the surrounding plate to cover the water retaining cavity, an air outlet is provided on the cover body or the surrounding plate, and the air outlet is arranged towards the heating element.

2. The waterproof housing according to claim 1, characterized in that, The height where the air outlet is located is higher than the height where the air inlet is located.

3. The waterproof housing according to claim 1, characterized in that, A retaining wall is arranged in the water retaining cavity to divide the water retaining cavity into a first chamber and a second chamber, an air passing port is provided on the retaining wall to communicate the first chamber and the second chamber, the first chamber is communicated with the air inlet, the second chamber is communicated with the air outlet, the water dripping hole is arranged on the bottom wall of the first chamber, or the water dripping hole is arranged on the bottom walls of the first chamber and the second chamber.

4. The waterproof housing according to claim 3, characterized in that, The retaining wall includes a first sub-retaining wall, a second sub-retaining wall and a third sub-retaining wall, the first sub-retaining wall is arranged opposite to the air inlet, the second sub-retaining wall and the third sub-retaining wall are respectively bent and arranged at both ends of the first sub-retaining wall, and the second sub-retaining wall and the third sub-retaining wall are arranged back to back, the end of the second sub-retaining wall far away from the first sub-retaining wall is connected to the inner wall of the housing, the end of the third sub-retaining wall far away from the first sub-retaining wall is connected to the surrounding plate, the three sub-retaining walls divide the water retaining cavity into a first chamber and a second chamber, and an air passing port is provided on the third sub-retaining wall to communicate the first chamber and the second chamber.

5. The waterproof housing according to claim 3, wherein, The retaining wall includes a first sub-retaining wall, a second sub-retaining wall and a third sub-retaining wall that are surrounded by three sides, the first sub-retaining wall is arranged opposite to the air inlet, the second sub-retaining wall and the third sub-retaining wall are respectively arranged at both ends of the first sub-retaining wall, and the three sub-retaining walls are arranged around the air inlet and the water dripping hole, and the surrounding plate is arranged around the three sub-retaining walls; Wherein, the first chamber is formed by enclosing between the three sub-retaining walls and the inner wall of the housing, the second chamber is formed by enclosing between the three sub-retaining walls and the three surrounding plates, and air passing ports are provided on the second sub-retaining wall and the third sub-retaining wall to communicate the first chamber and the second chamber.

6. The waterproof housing according to claim 3, wherein, A plurality of partition plates are arranged in the second chamber to divide the second chamber into a plurality of air guiding chambers, the top surfaces of the retaining wall and the partition plates are both attached to the surface of the cover body, an air guiding port is provided on each partition plate to communicate two adjacent air guiding chambers, and the air outlet is provided on the cover body or the surrounding plate and is communicated with the last air guiding chamber.

7. The waterproof housing according to claim 6, characterized in that, The air guiding ports on adjacent partition plates are arranged with a height offset, or the air guiding ports on adjacent partition plates are arranged with a left-right offset.

8. The waterproof housing according to claim 3, characterized in that, A plurality of partition plates are arranged in the second chamber to divide the second chamber into a plurality of air guiding chambers. The cover body includes a top plate and a flange provided at the edge of the top plate. A boss is convexly provided in the enclosed area of the flange on the top plate. A plurality of air guiding grooves are concavely provided on the boss. A partition wall is formed between two adjacent air guiding grooves. The top surface of the surrounding plate is attached to the flange. The end surface of the retaining wall is attached to the end surface of the boss. The end surface of the partition plate is attached to the end surface of the partition wall, so that each air guiding groove is arranged opposite to an air guiding chamber. Air guiding openings are formed in the partition plate and / or the partition wall. The air outlet hole is arranged on the cover body or the surrounding plate and is communicated with the last air guiding chamber.

9. The waterproof housing according to claim 8, characterized in that, The partition plates in the odd positions are defined as the first group of partition plates, the partition plates in the even positions are defined as the second group of partition plates, the partition walls in the odd positions are defined as the first group of partition walls, and the partition walls in the even positions are defined as the second group of partition walls. Among them, air guiding openings are formed in the first group of partition plates and the second group of partition walls, or air guiding openings are formed in the second group of partition plates and the first group of partition walls.

10. An electrical device, characterized in that, It includes the waterproof housing according to any one of claims 1 to 9. A heating element is arranged in the waterproof housing. The air outlet hole of the waterproof housing is arranged opposite to the heating element.

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