Waterproof box and display screen

Abstract

The utility model provides a waterproof box and a display screen. Electric parts of the display screen are arranged in the waterproof box. The waterproof box comprises a body, a rear cover and a sealing piece, the body extends outwards to be provided with multiple stages of waterproof folded edges, the sealing piece is tightly connected between the waterproof folded edges and the rear cover, and a flow guide channel is formed between the body and the rear cover. Through the arrangement, water drops falling on the waterproof box flow to the outer side of the waterproof box under the blocking effect of the water blocking folding edge and the flow guiding effect of the flow guiding channel, the water drops are effectively prevented from entering the electric devices in the waterproof box, the overall waterproofness of the waterproof box is improved, the water drops are prevented from corroding the electric devices in the waterproof box, and the service life of the waterproof box is prolonged. And the normal use of the display screen in outdoor and other humid environments is effectively ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of LED display screens, in particular to a waterproof box and an outdoor display screen. Background Art

[0002] LED display screens have the characteristics of high luminous brightness, high luminous efficiency, bright colors, high contrast, short response time, wide operating temperature range and low energy consumption. They are widely used in stage display equipment, advertising display equipment, data visualization display equipment and commercial display equipment.

[0003] When display screens are used outdoors, waterproofing is a crucial safety factor, and sealing is particularly crucial. Existing display screens often have poorly sealed power boxes, allowing water droplets to easily seep into the box, causing display anomalies and board burnout, impacting the display's usability and providing a poor user experience. Utility Model Content

[0004] The purpose of the utility model is to solve the problem that the power box of the existing display screen has poor waterproofness and easily causes water droplets to penetrate into the power box.

[0005] In order to solve the above technical problems, the present invention provides a waterproof box, comprising a main body, a back cover and a sealing member; the main body is provided with a waterproof folding edge extending outward, the waterproof folding edge is a multi-level waterproof folding edge, and the extension direction of the waterproof folding edge is different from the height direction of the main body; the back cover is provided on the side of the main body where the waterproof folding edge is formed, and the edge of the back cover is provided with an embedding groove corresponding to the waterproof folding edge, and the waterproof folding edge is partially extended into the embedding groove; the sealing member is embedded in the embedding groove, and one end of the waterproof folding edge is in close contact with the sealing member to form a diversion channel between the main body and the back cover.

[0006] In some embodiments of the present application, the main body includes a main body and a water retaining wall, the main body is annular and has an accommodating cavity formed inside, the water retaining wall is arranged on at least one side of the main body and extends to the outside of the main body; the waterproof folding edge includes a first folding edge and a second folding edge, the first folding edge is annular, and one end of the first folding edge is connected to the main body, and the other end is in close contact with the seal, so that the first folding edge and the back cover can seal the opening of the accommodating cavity; the first folding edge, the water retaining wall, the seal, and the back cover form a first guide channel; the second folding edge is arranged at intervals on the outside of the first folding edge, one end of the second folding edge is connected to the water retaining wall, and the other end is in close contact with the seal, and the second folding edge cooperates with the water retaining wall, the seal, and the back cover to form a second guide channel.

[0007] In some embodiments of the present application, the back cover is provided with a water retaining fold extending outward, and the water retaining fold is partially overlapped on the water retaining wall. The water retaining fold, the water retaining wall, the second fold, and the sealing member together form the second guide channel.

[0008] In some embodiments of the present application, the second folded edge is in the shape of a long strip, the length direction of the second folded edge extends along the top edge of the main body, and the two end faces of the second folded edge are respectively located on the outside of both sides of the main body; the second guide channel is connected to the two end faces of the second folded edge in the length direction.

[0009] In some embodiments of the present application, the extension direction of the water retaining wall is perpendicular to the top surface of the main body; the extension direction of the first folded edge and the second folded edge is perpendicular to the height direction of the water retaining wall.

[0010] In some embodiments of the present application, the embedding groove includes a first embedding groove and a second embedding groove, the position of the first embedding groove corresponds to the position of the first folded edge, and the position of the second embedding groove corresponds to the position of the second folded edge; the seal includes a first seal and a second seal, the first seal is installed in the first embedding groove and is in close contact with the first folded edge; the second seal is installed in the second embedding groove and is in close contact with the second folded edge.

[0011] In some embodiments of the present application, the first folding edge includes a connecting portion connected to the main body and a folding portion connected to the connecting portion, the folding portion is located on the outside of the connecting portion away from the connecting portion, and the folding portion, the connecting portion and the retaining wall together form the first diversion channel; the projection of the opening of the second embedding groove in the top view direction is located within the first diversion channel.

[0012] In some embodiments of the present application, the first seal and the second seal are both flexible members; the first seal and the second seal have the same hardness; and / or the compression amount of the first seal is greater than the compression amount of the second seal; and / or the first seal and the second seal are both silicone seals.

[0013] In some embodiments of the present application, the waterproof box also includes a front cover and a first sealing ring, the front cover is connected to one end of the body away from the rear cover, and the first sealing ring is tightly connected between the front cover and the body; the body is provided with a shielding plate above the front cover, and the shielding plate extends toward the side away from the rear cover and covers at least part of the top surface of the front cover; a connecting column is provided on the front cover, and the connecting column protrudes from the outer surface of the side of the front cover away from the rear cover, and the connecting column is used to connect to an external box body, and the waterproof box also includes a second sealing ring, and the second sealing ring is sleeved on the connecting column.

[0014] A display screen comprises a box body, a waterproof box and electrical components, wherein the waterproof box is connected to the box body; and the electrical components are arranged in a receiving cavity of the waterproof box.

[0015] As can be seen from the above technical solution, the beneficial effects of the present invention are as follows: in the waterproof box and display screen of the present application, the electrical components of the display screen are arranged in the waterproof box. The waterproof box includes a body, a back cover, and a sealing member. The body is provided with a multi-stage waterproof hem extending outward. The sealing member is tightly connected between the waterproof hem and the back cover, and a diversion channel is formed between the body and the back cover. This arrangement allows water droplets falling on the waterproof box to flow to the outside of the waterproof box under the blocking effect of the water-retaining hem and the diversion effect of the diversion channel, effectively preventing water droplets from entering the electrical components inside the waterproof box, thereby improving the overall waterproofness of the waterproof box, preventing water droplets from eroding the electrical components inside the waterproof box, and effectively ensuring the normal use of the display screen in humid environments such as outdoor environments. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural diagram of a waterproof box in one embodiment.

[0017] Figure 2 yes Figure 1 Schematic diagram of the local enlarged structure at point A.

[0018] Figure 3 It is a schematic cross-sectional structural diagram of a waterproof box in one embodiment.

[0019] Figure 4 yes Figure 3 Schematic diagram of the local enlarged structure at point B.

[0020] Figure 5 It is a structural diagram of the main body and the front cover after being connected in one embodiment.

[0021] Figure 6 yes Figure 5 Schematic diagram of the local enlarged structure at point C.

[0022] Figure 7 It is a structural schematic diagram of the back cover in one embodiment.

[0023] Figure 8 yes Figure 7 Schematic diagram of the cross-sectional structure of the back cover shown.

[0024] The reference numerals are as follows: 1-main body; 11-main body; 12-water retaining wall; 13-waterproof folding edge; 131-first folding edge; 1311-connecting part; 1312-folding part; 132-second folding edge; 14-shielding plate; 15-accommodating chamber; 16-guiding channel; 161-first guide channel; 162-second guide channel; 2-back cover; 21-groove; 211-first groove; 212-second groove; 22-water retaining folding edge; 3-seal; 31-first seal; 32-second seal; 4-front cover; 41-connecting column; 42-wire outlet hole; 5-first sealing ring; 6-second sealing ring. DETAILED DESCRIPTION

[0025] Typical embodiments that embody the features and advantages of the present invention will be described in detail in the following description. It should be understood that the present invention is capable of various variations in different embodiments without departing from the scope of the present invention, and that the descriptions and illustrations herein are intended to be illustrative in nature and not to limit the present invention.

[0026] In the description of this application, it should be understood that in the embodiments shown in the drawings, indications of directions or positional relationships (such as up, down, left, right, front, and back) are merely for the convenience of describing this application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed, or operate in a specific orientation. These descriptions are appropriate when these elements are in the positions shown in the drawings. If the descriptions of the positions of these elements change, the indications of these directions will also change accordingly.

[0027] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the described features. Throughout the description of this application, "plurality" means two or more, unless otherwise specifically defined.

[0028] This application addresses the problem that when existing display screens are used in outdoor locations or humid environments, the sealing performance of the power supply box in the display screen is poor, and water droplets easily penetrate into the power supply box, causing display abnormalities and board burns, which affects the use of the display screen. A display screen is provided, which includes a housing, a waterproof box, and electrical components. The waterproof box is connected to the housing, and the electrical components are arranged in a receiving cavity of the waterproof box. The housing is a light box for the display screen, and the electrical components include a power supply. The electrical components are arranged in the waterproof box, so that the waterproof box can protect the power supply and provide waterproofing.

[0029] See Figures 1 to 4The waterproof box includes a body 1, a rear cover 2, a sealing member 3, a front cover 4, and a first sealing ring 5. The body 1 is connected to the box body. The body 1 is formed with a receiving cavity 15 for installing electrical components. The front cover 4 and the rear cover 2 are both fixedly connected to the body 1 and respectively block the openings at both ends of the receiving cavity 15. The sealing member 3 is tightly connected between the body 1 and the rear cover 2 to achieve a sealed connection between the body 1 and the rear cover 2. The first sealing ring 5 is tightly connected between the body 1 and the front cover 4 to achieve a sealed connection between the body 1 and the front cover 4.

[0030] Among them, the main body 1 is extended outward with multiple levels of waterproof folds 13, the extension direction of the waterproof folds 13 is different from the height direction of the main body 1, and one end of the waterproof folds 13 is in close contact with the seal 3, so that there are multiple sealing connections between the main body 1 and the back cover 2 from top to bottom, thereby improving the sealing between the main body 1 and the back cover 2.

[0031] Furthermore, the multi-level waterproof folding edge 13 forms a plurality of guide channels 16 between the main body 1 and the back cover 2, such as the second guide channel 162 and the first guide channel 161 described below, so that when water droplets fall on the guide channel 16, they are quickly discharged to the outside of the main body 1 under the guiding action of the guide channel 16, avoiding the water droplets from concentrating at the connection between the main body 1, the back cover 2 and the seal 3 and causing the water droplets to penetrate into the accommodating cavity 13, thereby improving the waterproof performance of the waterproof box and avoiding water droplets from entering the accommodating cavity 13 and causing damage to electrical components.

[0032] For details, see Figure 5 and Figure 6 The main body 1 includes a main body 11 and a water retaining wall 12. The main body 11 is in the shape of a cube and is hollow inside to form a ring. A accommodating cavity 15 is formed inside the main body 11, and both ends of the accommodating cavity 15 are open. The water retaining wall 12 is arranged on the top surface of the main body 11 and is located at the edge of the opening at one end of the accommodating cavity 15. The water retaining wall 12 extends upward from the main body 11 so that the position of the end of the water retaining wall 12 away from the main body 11 is higher than the top surface of the main body 11. In other embodiments, the main body 11 may also be cylindrical or polygonal prism-shaped. The water retaining wall 12 may also be arranged on multiple sides of the main body 11 and extend to the outside of the main body 11. For example: the water retaining wall 12 is located on the upper side and front and rear sides of the main body 11, and forms an inverted U shape.

[0033] In one embodiment, the retaining wall 12 extends perpendicular to the top surface of the main body 11. In other embodiments, the retaining wall 12 may be arranged at an angle, that is, the retaining wall 12 extends at an angle of 0-90° with the top surface of the main body 11, such as an angle of 30°, 45°, or 60°. In one embodiment, the retaining wall 12 is positioned at the opening of the accommodating cavity 15. In other embodiments, the retaining wall 12 is positioned on the outer surface of the main body 11 at a distance from the opening of the accommodating cavity 15.

[0034] The waterproof hem 13 includes a first hem 131 and a second hem 132. The second hem 132 is spaced apart and positioned above the first hem 131. The first and second hems 131, 132 extend perpendicularly to the height of the water retaining wall 12, such that both the first and second hems 131, 132 extend toward one side of the rear cover 2. Therefore, when the rear cover 2 is mounted on the body 1, both the first and second hems 131, 132 can extend into the recess 21 on the rear cover 2. In other embodiments, the first and second hems 131, 132 extend at other angles to the height of the water retaining wall 12, such as 30°, 45°, or 60°.

[0035] The first folded edge 131 is annular, with one end connected to the edge of the accommodating cavity 15 of the main body 11, and the other end being a free end of the first folded edge 131. When the rear cover 2 is mounted on the main body 1, the free end of the first folded edge 131 extends into the embedding groove 21 of the rear cover 2 and abuts against the sealing member 3, thereby sealing the opening of the accommodating cavity 15 in the circumferential direction.

[0036] The first folding edge 131 includes a connecting portion 1311 and a folding portion 1312. The connecting portion 1311 is fixedly connected to the main body 11. The folding portion 1312 is connected to the end of the connecting portion 1311 away from the main body 11, and the side of the folding portion 1312 away from the connecting portion 1311 is located outside the connecting portion 1311, that is, the folding portion 1312 is located on the side of the connecting portion 1311 facing away from the accommodating cavity 15. The folding portion 1312, the connecting portion 1311, and the retaining wall 12 together form a first guide channel 161. The first guide channel 161 is connected to the outside of the main body at both sides of the connecting portion 1311. The side of the folding portion 1312 facing away from the first guide channel 161 is the free end of the first folding edge 131. In other words, the first guide channel 161 is located on the side of the folding portion 1312 facing away from the sealing member 3. When water droplets fall on the top surface of the first fold edge 131, the water droplets gather in the first guide channel 161 under the action of their own gravity, that is, gather at the top surface of the connecting part 1311, and flow out quickly to both sides along the connecting part 1311, avoiding the water droplets from concentrating at the connection between the first fold edge 131 and the seal 3, which makes it easy for the water droplets to penetrate into the accommodating cavity 15.

[0037] exist Figure 6In the illustrated embodiment, the connecting portion 1311 is annular, and the folding portion 1312 is an elongated strip. The folding portion 1312 is connected to the end of the connecting portion 1311 away from the main body 11, and the top surface of the folding portion 1312 is higher than the top surface of the connecting portion 1311. The length direction of the folding portion 1312 extends along the top edge of the connecting portion 1311, so that the folding portion 1312, the connecting portion 1311, and the retaining wall 12 are combined on the top surface of the first folding edge 131 to form the first guide channel 161. In this embodiment, the connecting portion 1311 and the folding portion 1312 are both in contact with the sealing member 3. In other embodiments, the folding portion 1312 can also be annular, and the folding portion 1312 is arranged on the outside of the end of the connecting portion 1311 away from the main body 11, so that the first guide channel 161 forms a ring.

[0038] One end of the second hem 132 is connected to the retaining wall 12, and the other end is the free end of the second hem 132. When the back cover 2 is installed on the body 1, the free end of the second hem 132 extends into the recess 21 of the back cover 2 and abuts against the seal 3, achieving close contact between the second hem 132 and the seal 3. The second hem 132 is in the shape of an elongated strip, and its length extends along the top edge of the body 1, with its two end surfaces located on the outside of the body 1. This arrangement ensures that the connection between the body 1 and the back cover 2 is provided with multiple layers of waterproof structure from top to bottom. When water drops fall on the second hem 132, the water drops are blocked by the second hem 132 and cannot directly reach the first hem 131, thus preventing the water drops from seeping into the interior of the accommodating cavity 15 through the first hem 131.

[0039] The second folded edge 132 cooperates with the water retaining wall 12, the seal 3, and the back cover 2 to form a second guide channel 162. The opening of the second guide channel 162 is set on the top surface of the second folded edge 132; the second guide channel 162 is connected to the two end surfaces of the second folded edge 132 in the longitudinal direction. When water droplets fall on the second folded edge 132, the water droplets converge in the second guide channel 162 under the action of their own gravity and flow out along the two ends of the second guide channel 162, so that the water droplets falling on the second folded edge 132 flow to the outside of the main body 1 under the guiding effect of the second guide channel 162. As a result, the water droplets will not drip onto the two side walls of the main body 11 and the first folded edge 131, effectively preventing water droplets from passing between the free end of the first folded edge 131 and the seal 3, thereby improving the waterproofness of the waterproof box. In other embodiments, the second guide channel 162 can also be opened on the top surface of the second folded edge 132.

[0040] In one embodiment, the second guide channel 162 forms an opening of the second guide channel 162 above the second folded edge 132. In other embodiments, the opening of the second guide channel 162 may also be provided on the side of the second folded edge 132.

[0041] In other embodiments, the second fold 132 may also be annular and located circumferentially outside the first fold 131, so that the accommodating cavity 15 forms at least two layers of sealing structure in the circumferential direction, thereby enhancing the waterproofness of the waterproof box. Alternatively, the second fold 132 may be in an inverted U-shape, that is, the second fold 132 is located above the first fold 131 and on both sides in the front-to-back direction, thereby enhancing the waterproofness of the waterproof box without affecting the drainage of water droplets in the second guide channel 162.

[0042] exist Figure 6 In the illustrated embodiment, there is one second folded edge 132. In other embodiments, a plurality of second folded edges 132 are provided, and the plurality of second folded edges 132 are spaced apart along the height direction of the body 1, so that the connection position between the body 1 and the back cover 2 is sequentially provided with a multi-layer waterproof structure from top to bottom.

[0043] Preferably, the main body 11, the retaining wall 12, the first folding edge 131 and the second folding edge 132 are an integrally formed structure, so as to improve the sealing performance of the main body 1, and the structure is simple, easy to manufacture and low in cost.

[0044] See Figure 4 、 Figure 7 and Figure 8 In one embodiment, the seal 3 includes a first seal 31 and a second seal 32, both of which are installed in the embedding groove 21 of the back cover 2. The first seal 31 is annular, and the size of the first seal 31 is adapted to the first folded edge 131, and the first folded edge 131 is in close contact with the first seal 31. The second seal 32 is long and the length of the second seal 32 is adapted to the length of the second seal 32, and the second folded edge 132 is in close contact with the second seal 32. The first seal 31 and the second seal 32 are both flexible, so that the first seal 31 and the second seal 32 can be compressed to improve the sealing of the connection between the back cover 2 and the body 1.

[0045] In one embodiment, the hardness of the first seal 31 and the second seal 32 is the same, so that the first fold 131 and the second fold 132 can compress the first seal 31 and the second seal 32 respectively to achieve a seal between the first fold 131 and the back cover 2 and between the second fold 132 and the back cover 2. This prevents the first seal 31 and the second seal 32 from having different hardnesses, which may cause the harder seal 3 to be in a compressed state and press against the back cover 2, thereby preventing the harder seal 3 from being compressed. The Shore hardness of the first seal 31 and the second seal 32 is 20-40 degrees. In one embodiment, the Shore hardness of the first seal 31 and the second seal 32 is preferably 30 degrees.

[0046] In one embodiment, the first sealing member 31 and the second sealing member 32 are both silicone sealing rings or rubber sealing rings.

[0047] In one embodiment, the compression amount of the first seal 31 is greater than the compression amount of the second seal 32, so that the waterproof box has a better sealing effect at the first seal 31, can effectively prevent water droplets from entering the accommodating cavity 15, and meet the IPX6 waterproof test.

[0048] exist Figure 4 In the embodiment shown, the first sealing member 31 and the second sealing member 32 are provided separately. In other embodiments, the first sealing member 31 and the second sealing member 32 may also be an integrated structure.

[0049] In one embodiment, a screw hole is provided on the back cover 2, a screw post is provided on the main body 11, and the waterproof box further includes a first bolt, which passes through the screw hole and is threadedly connected to the screw post to achieve a fixed connection between the back cover 2 and the main body 1. In other embodiments, the back cover 2 and the main body 1 can also be connected by a snap fastener.

[0050] The back cover 2 has a beading groove 21 on one side facing the main body 11. The beading groove 21 includes a first beading groove 211 and a second beading groove 212. The first beading groove 211 corresponds to the first folded edge 131, and the first sealing member 31 is installed in the first beading groove 211. The second beading groove 212 corresponds to the second folded edge 132, and the second sealing member 32 is installed in the second beading groove 212.

[0051] Preferably, the first sealing member 31 is installed in the first embedding groove 211 by embedding, so that the first sealing member 31 is completely in contact with the sidewalls of the first embedding groove 211, reducing the gap between the first sealing member 31 and the sidewalls of the first embedding groove 211, preventing water droplets from passing between the first sealing member 31 and the first embedding groove 211, and thus preventing water droplets from entering the interior of the accommodating cavity 15. In other embodiments, the first sealing member 31 can also be installed on the back cover 2 by bonding or screwing.

[0052] Similarly, the second sealing member 32 is installed in the second embedding groove 212 by embedding, so that the second sealing member 32 is completely in contact with the sidewall of the second embedding groove 212, reducing the gap between the second sealing member 32 and the sidewall of the second embedding groove 212, and preventing water droplets from passing between the second sealing member 32 and the second embedding groove 212. In other embodiments, the second sealing member 32 can also be installed on the back cover 2 by bonding or screwing.

[0053] The projection of the opening of the second embedding groove 212 in the top view is located in the first guide channel 161, so that when water droplets pass between the second sealing member 32 and the free end of the second folded edge 132, the water droplets fall into the first guide channel 161 and are discharged from the first guide channel 161.

[0054] The depth of the first embedding groove 211 is greater than the depth of the second embedding groove 212, and the thickness of the first seal 31 is greater than the thickness of the second seal 32, so that the compression amount of the first seal 31 is greater than the compression amount of the second seal 32, so that there is better sealing between the main body 1 and the back cover 2 at the first seal 31, preventing water droplets from entering the accommodating cavity 15.

[0055] See Figure 3 、 Figure 4 、 Figure 7 as well as Figure 8 In one embodiment, a water-retaining fold 22 extends outward from the rear cover 2. The fold 22 partially overlaps the water-retaining wall 12. Together with the water-retaining wall 12, the second fold 132, and the second seal 32, the fold 22 forms a second diversion channel 162. Furthermore, the fold 22 is located outside the water-retaining wall 12, the second fold 132, and the second seal 32, allowing it to divert water droplets outside the second diversion channel 162, preventing them from flowing directly into the second diversion channel 162. When water droplets splash and enter the seal 3 through the gap between the fold 22 and the water-retaining wall 12, they converge in the second diversion channel 162 under the action of their own gravity and flow out along the second diversion channel 162. This prevents the water droplets from concentrating at the connection between the second fold 132, the rear cover 2, and the seal 3, potentially causing them to penetrate into the accommodating cavity 15, thereby improving the waterproof performance of the waterproof box.

[0056] Figure 4 In the illustrated embodiment, the water-retaining flange 22 completely covers the top surface of the water-retaining wall 12, and the gap between the water-retaining flange 22 and the water-retaining wall 12 is higher than the top surface of the main body 11. When rainwater falls on the water-retaining flange 22, it flows down along the water-retaining flange 22 and the water-retaining wall 12, preventing water droplets from entering the second diversion channel 162 and the first diversion channel 161 through the gap between the water-retaining flange 22 and the water-retaining wall 12. When water droplets fall on the top surface of the main body 11 and splash, most of the water droplets are blocked by the water-retaining wall 12 and the water-retaining flange 22, and only a small amount of water droplets enter the second diversion channel 162 through the gap between the water-retaining flange 22 and the water-retaining wall 12. This arrangement reduces the number of water droplets entering the second diversion channel 162, and water droplets that enter the second diversion channel 162 flow out along the second diversion channel 162, preventing water droplets from seeping into the accommodating cavity 15 through the sealing member 3. Moreover, a sealing member 3 is provided between the second folded edge 132 and the back cover 2 and between the first folded edge 131 and the back cover 2, thereby improving the waterproof performance of the waterproof box.

[0057] See Figure 1 and Figure 3 The front cover 4 is connected to the end of the body 1 away from the rear cover 2 and blocks the opening of the accommodating cavity 15 away from the rear cover 2, so that the body 1, the rear cover 2 and the front cover 4 enclose the accommodating cavity 15 to form a closed cavity. The connection between the front cover 4 and the body 1 can be a screw connection or a snap connection.

[0058] The first sealing ring 5 is tightly connected between the front cover 4 and the body 1, and is tightly fitted to both the front cover 4 and the body 1, thereby achieving a sealed connection between the front cover 4 and the body 1. In this embodiment, the front cover 4 and the body 1 are provided separately. In other embodiments, the front cover 4 and the body 1 can also be an integrally formed structure.

[0059] exist Figure 3 In the embodiment shown, the main body 1 is provided with a baffle 14 above the front cover 4. The baffle 14 extends toward the side away from the rear cover 2 and covers at least a portion of the top surface of the front cover 4, so that the baffle 14 can prevent water droplets from falling on the connection position between the main body 1, the front cover 4 and the first sealing ring 5, and avoid water droplets from seeping into the interior of the accommodating cavity 15 from the first sealing ring 5.

[0060] In one embodiment, the box body is provided with a mounting hole. The front cover 4 is provided with a connecting post 41, which protrudes from the outer surface of the front cover 4 on the side facing away from the rear cover 2. The connecting post 41 is used to connect to the external box body. The waterproof box also includes a second sealing ring 6, which is mounted on the connecting post 41 and located in the mounting hole. That is, the second sealing ring 6 is located between the side wall of the mounting hole and the circumferential outer surface of the connecting post 41, thereby achieving a seal at the connection between the waterproof box and the box body.

[0061] exist Figure 3 In the illustrated embodiment, an annular groove is provided on the circumferential outer surface of the connecting column 41, and the second sealing ring 6 is installed in the annular groove so that the second sealing ring 6 is fixed on the connecting column 41. The thickness of at least part of the second sealing ring 6 is greater than the depth of the annular groove, so that the second sealing ring 6 can contact the side wall of the mounting hole and be in a compressed state, thereby realizing a sealed connection between the connecting column 41 and the mounting hole of the box body.

[0062] The electrical components installed in the waterproof box are connected to the light board installed inside the box via wires. A wire hole 42 is provided on the connecting column 41 and communicates with the accommodating cavity 15. The wires connecting the electrical components and the light board pass through the wire hole 42, thereby achieving electrical connection between the electrical components and the light board and ensuring waterproofing.

[0063] In the waterproof box of the present application, a waterproof folding edge 13 is provided on the main body 1 extending outward, and a guide channel 16 is provided on the waterproof folding edge 13. The back cover 2 of the waterproof box is fixed at the opening of the accommodating cavity 15 of the main body 1, and a water-retaining folding edge 22 is provided on the back cover 2 of the waterproof box. One end of the water-retaining folding edge 22 extends to the outside of the waterproof folding edge 13 and covers the guide channel 16. A seal 3 is provided between the waterproof folding edge 13 and the back cover 2 of the waterproof box. Such arrangement enables water droplets falling on the waterproof box to flow to the outside of the waterproof box under the obstruction of the water retaining fold 22, and when water droplets splash into the waterproof box from the gap between the water retaining fold 22 and the waterproof fold 13, the water droplets entering the waterproof box fall into the guide channel 16 under the obstruction of the seal 3, and flow out of the waterproof box under the guidance of the guide channel 16, effectively preventing water droplets from entering the electrical components inside the waterproof box, thereby enhancing the overall waterproofness of the waterproof box, preventing water droplets from eroding the electrical components inside the waterproof box, and effectively ensuring the normal use of the display screen in humid environments such as outdoor.

[0064] While the present invention has been described with reference to several exemplary embodiments, it should be understood that the terms used are illustrative and exemplary rather than restrictive. Since the present invention can be embodied in a variety of forms without departing from the spirit or essence of the invention, it should be understood that the above-described embodiments are not limited to any of the foregoing details, but should be interpreted broadly within the spirit and scope of the appended claims. Therefore, all changes and modifications that fall within the scope of the claims or their equivalents are intended to be covered by the appended claims.

Claims

1. A waterproof box, characterized in that: include: The main body is provided with a waterproof hem extending outward, the waterproof hem is a multi-level waterproof hem, and the extension direction of the waterproof hem is different from the height direction of the main body; A back cover is provided on a side of the body where the waterproof fold is formed, an embedding groove is provided on an edge of the back cover corresponding to the waterproof fold, and a portion of the waterproof fold is extended into the embedding groove; A sealing member is embedded in the embedding groove, and one end of the waterproof folding edge is in close contact with the sealing member to form a guide channel between the body and the back cover.

2. The waterproof box according to claim 1, characterized in that: The main body includes a main body and a water retaining wall. The main body is annular and has an accommodating cavity formed inside. The water retaining wall is provided on at least one side of the main body and extends outward from the main body. The waterproof folding edge includes a first folding edge and a second folding edge, the first folding edge is annular, and one end of the first folding edge is connected to the main body, and the other end is in close contact with the sealing member, so that the first folding edge and the back cover can seal the opening of the accommodating cavity; The first folded edge, the water retaining wall, the sealing member, and the rear cover form a first guide channel; The second folded edge is arranged at intervals on the outside of the first folded edge, one end of the second folded edge is connected to the water retaining wall, and the other end is in close contact with the seal. The second folded edge cooperates with the water retaining wall, the seal and the back cover to form a second guide channel.

3. The waterproof box according to claim 2, characterized in that: The rear cover is provided with a water retaining fold extending outward, and the water retaining fold is partially overlapped on the water retaining wall. The water retaining fold, the water retaining wall, the second fold and the sealing member together form the second guide channel.

4. The waterproof box according to claim 3, characterized in that: The second folded edge is in the shape of an elongated strip, the length direction of the second folded edge extends along the top edge of the main body, and the two end surfaces of the second folded edge are respectively located on the outer sides of both sides of the main body; The second guide channel is communicated with both end surfaces of the second folded edge in the length direction.

5. The waterproof box according to claim 3, characterized in that: The extending direction of the retaining wall is perpendicular to the top surface of the main body; The extending directions of the first folded edge and the second folded edge are perpendicular to the height direction of the water retaining wall.

6. The waterproof box according to claim 2, characterized in that: The beading groove includes a first beading groove and a second beading groove, wherein the position of the first beading groove corresponds to the position of the first folding edge, and the position of the second beading groove corresponds to the position of the second folding edge; The sealing member includes a first sealing member and a second sealing member. The first sealing member is installed in the first embedding groove and is in close contact with the first folded edge. The second sealing member is installed in the second embedding groove and is in close contact with the second folded edge.

7. The waterproof box according to claim 6, characterized in that: The first folding edge includes a connecting portion connected to the main body and a folding portion connected to the connecting portion, wherein a side of the folding portion away from the connecting portion is located outside the connecting portion, and the folding portion, the connecting portion and the retaining wall together form the first diversion channel; The projection of the opening of the second embedding groove in a top view is located in the first guide channel.

8. The waterproof box according to claim 6, characterized in that: The first sealing member and the second sealing member are both flexible members; the first sealing member and the second sealing member have the same hardness; and / or The compression amount of the first sealing member is greater than the compression amount of the second sealing member; and / or The first sealing member and the second sealing member are both silicone sealing members.

9. The waterproof box according to claim 1, characterized in that: The waterproof box further includes a front cover and a first sealing ring, wherein the front cover is connected to an end of the body away from the rear cover, and the first sealing ring is tightly connected between the front cover and the body; The main body is provided with a shielding plate above the front cover, and the shielding plate extends to a side away from the rear cover and covers at least a portion of the top surface of the front cover; The front cover is provided with a connecting column, which protrudes from the outer surface of the front cover on the side facing away from the rear cover. The connecting column is used to connect to the external box body. The waterproof box also includes a second sealing ring, which is sleeved on the connecting column.

10. A display screen, characterized in that: The invention comprises a box body, a waterproof box and an electrical component, wherein the waterproof box is connected to the box body and is the waterproof box according to any one of claims 1 to 9; and the electrical component is arranged in the accommodating cavity of the waterproof box.

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