CN218384423U - Waterproof construction and display screen of display screen - Google Patents

Abstract

The application discloses a waterproof structure of a display screen and the display screen, wherein the waterproof structure of the display screen comprises a bottom shell, a waterproof ring, a box body and a cover plate, wherein a mounting groove is formed in the bottom shell, the waterproof ring is arranged in the mounting groove and matched with the mounting groove, the box body is covered on the bottom shell, the waterproof ring is arranged between the mounting groove and the box body, the front side and the side wall of the waterproof ring are respectively abutted against the box body, and the cover plate is arranged on the bottom shell in a penetrating manner and is clamped with the bottom shell and used for fixing the waterproof ring between the bottom shell and the box body; according to the waterproof structure, the waterproof ring is embedded in the mounting groove of the bottom shell, so that the waterproof ring is respectively abutted against the front side and the side wall of the box body, a plurality of waterproof structures are formed, the front side waterproof and the side waterproof between the box body and the waterproof ring are realized, and the waterproof effect of the waterproof structure is improved; thereby the apron passes through the joint to be fixed waterproof circle on the drain pan, simple structure, easy dismounting, and the apron is to the pressure stability of waterproof circle, guarantees the roughness of display screen face.

Description

Waterproof construction and display screen of display screen

Technical Field

The application relates to the field of display equipment, in particular to a waterproof structure of a display screen, and the display screen.

Background

Outdoor display screen is higher to waterproof performance's requirement, and is general, for preventing that steam from getting into the inside damage that causes electric elements of display screen, the position of all display module assemblies and box contact all need set up waterproof circle in the outdoor display screen. At present, the waterproof structure of outdoor display screen includes that the front of contact is done water repellent treatment with waterproof circle between display module assembly and box or does water repellent treatment with waterproof circle in the side of display module assembly and box contact position. However, the compression amount of the waterproof ring in the front waterproof mode is difficult to control, and if the compression amount is too large, the position of the display module where the waterproof ring is installed is raised after the display module is installed, so that the flatness of the display screen is affected, and the display effect is further affected; if the compression amount of the waterproof ring is too small or insufficient, the waterproof effect is not ideal, and water vapor easily enters the box body to cause short circuit of the electric element. The side waterproof structure needs to carry out secondary operation to the box for the cost of product increases by a wide margin.

It is seen that improvements and enhancements to the prior art are needed.

SUMMERY OF THE UTILITY MODEL

In view of the shortcomings of the prior art, the purpose of the application is to provide a waterproof structure of a display screen and the display screen, aiming at simplifying the waterproof structure of the display screen in the prior art and improving the waterproof effect of the display screen.

In order to achieve the purpose, the following technical scheme is adopted in the application:

this application discloses an aspect discloses waterproof construction of display screen, includes:

the bottom shell is provided with a mounting groove;

the waterproof ring is arranged in the mounting groove and is matched with the mounting groove;

the box body is covered on the bottom shell, the waterproof ring is arranged between the mounting groove and the box body, and the front surface and the side wall of the waterproof ring are respectively abutted against the box body;

and the cover plate penetrates through the bottom shell, is clamped with the bottom shell and is used for fixing the waterproof ring between the bottom shell and the box body.

In some embodiments of the present application, the mounting groove is an annular groove, the cover plate is disposed on an inner side of the mounting groove, a circumferential flange is disposed at one end of the cover plate facing the box body, and the flanges are respectively abutted against a back surface of the waterproof ring and a back surface of the bottom case to fix the waterproof ring on the bottom case;

the one end that the apron was kept away from the box is equipped with the orientation the joint portion that the drain pan extends, joint portion fixes one side of drain pan towards the display screen lamp plate.

In some embodiments of this application, the mounting groove with be formed with first step face on the interior cell wall of one side that the apron is close to, waterproof circle includes cell body portion and location portion, cell body portion place in the mounting groove, location portion connects the cell body portion is close to on the cell wall of one side of apron, location portion spacing in the apron with between the first step face.

In some embodiments of this application, the cell body portion includes follows the recess that the periphery circumference of waterproof circle set up, the notch of recess sets up towards the box, the box butt is in on the recess.

In some embodiments of the present application, the positioning portion is provided with one or more first protruding rings protruding outward, the first protruding rings are arranged along the circumferential direction of the outer side wall of the positioning portion, and the first protruding rings are abutted to the box body.

In some embodiments of the present application, the first protruding ring is provided with two, and the two first protruding rings are spaced apart from each other.

In some embodiments of this application, be provided with the mounting hole on the drain pan, be provided with in the box with the via hole that the mounting hole corresponds, the mounting groove encircles the mounting hole sets up, the periphery of via hole is provided with the orientation the convex annular of drain pan is protruding, the annular is protruding to be set up in the recess, its free end with the recess butt.

In some embodiments of the present application, the groove portion further includes a second protruding ring and a third protruding ring, the second protruding ring and the third protruding ring are connected below the groove, the second protruding ring and the third protruding ring are connected on the groove bottom of the mounting groove, the second protruding ring and the third protruding ring are arranged in an inclined manner, and a distance between a connecting end of the second protruding ring and a connecting end of the third protruding ring is smaller than a distance between a free end of the second protruding ring and a free end of the third protruding ring; the width of the mounting groove is larger than the distance between the second convex ring and the third convex ring.

In some embodiments of the present application, a protrusion is disposed on a bottom of the mounting groove, and the protrusion is disposed between the second protruding ring and the third protruding ring, and spaced apart from the second protruding ring and the third protruding ring.

This application on the other hand still provides a display screen, the display screen include as above arbitrary display screen waterproof construction, still include display screen lamp plate and control device, the display screen lamp plate is fixed the drain pan is kept away from one side of box, the control device with display screen lamp plate electric connection.

Has the beneficial effects that:

the application provides a waterproof structure of a display screen, wherein the waterproof structure enables the front side and the side surface of a waterproof ring to be abutted against a box body by embedding the waterproof ring into an installation groove of a bottom shell, so that the front side and the side surface of the bottom shell and the box body are simultaneously waterproof, and the waterproof effect of the display screen is improved; in addition, fix the waterproof circle in the mounting groove of drain pan through the apron, the apron is connected with the drain pan block, realizes waterproof construction's quick assembly disassembly. When the cover plate fixes the waterproof ring in the mounting groove, the pressure applied to the waterproof ring is stable, the problem that the waterproof performance is not enough due to the fact that the waterproof ring is excessively pressed down to cause unevenness of a screen surface of a display screen or the compression amount of the waterproof ring is not enough can be effectively solved, and the effective and stable waterproof sealing effect is achieved.

The application also provides a display screen, including the waterproof construction of above-mentioned display screen, have all advantages of above-mentioned waterproof construction.

Drawings

Fig. 1 is a schematic cross-sectional view of a waterproof structure of a display screen according to an embodiment of the present application.

Fig. 2 is a schematic structural diagram of a waterproof structure of a display screen according to an embodiment of the present application.

Fig. 3 is a first structural schematic diagram of a waterproof ring according to an embodiment of the present application.

Fig. 4 is a schematic structural diagram of a waterproof ring according to an embodiment of the present application.

Fig. 5 is a schematic structural diagram of a cover plate according to an embodiment of the present application.

Fig. 6 is a first partial schematic structural diagram of a bottom case according to an embodiment of the present application.

Fig. 7 is a partial schematic structural diagram of a bottom case according to an embodiment of the present application.

Fig. 8 is a first structural schematic diagram of a box body according to an embodiment of the present application.

Fig. 9 is a second schematic structural diagram of a box according to an embodiment of the present application.

Fig. 10 is a schematic structural diagram of a display screen according to an embodiment of the present application.

Description of the main element symbols: 1. a bottom case; 11. mounting grooves; 111. a first step surface; 112. a boss portion; 12. mounting holes; 2. a waterproof ring; 21. a trough portion; 211. a groove; 212. a second convex ring; 213. a third convex ring; 22. a positioning part; 221. a first convex ring; 3. a box body; 31. a via hole; 32. an annular projection; 4. a cover plate; 41. a flange; 42. a clamping part; 200. a display screen lamp panel; 300. a signal interface element.

Detailed Description

The application provides a waterproof construction and display screen of display screen, for making purpose, technical scheme and effect of this application clearer, make the following refer to the attached drawing and to the further detailed description of this application of embodiment. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.

In the description of the present application, it is to be understood that the terms "upper", "lower", "left", "right", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are only for convenience in describing the present application and simplifying the description, and do not indicate or imply that the referred devices or elements must have a specific orientation and a specific orientation configuration and operation, and thus, should not be construed as limiting the present application. Furthermore, "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, "a plurality" means two or more unless otherwise specified.

In the description of the present application, it should be noted that, unless otherwise explicitly stated or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, a fixed connection, a detachable connection, or an integral connection; may be mechanically connected, may be electrically connected or may be in communication with each other; either directly or indirectly through intervening media, either internally or in any other suitable relationship. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as the case may be.

The LED display screen has the advantages of high luminous brightness, high luminous efficiency, bright color, high contrast, short corresponding time, wide working temperature range, low energy consumption and the like, and is widely applied to stage display equipment, advertisement display equipment, data visualization display equipment and commercial display equipment.

When the LED display screen is applied to outdoor advertising display, waterproof treatment is usually required to be carried out at the position where the display module and the box body are contacted, and the damage to electric elements caused by the water vapor entering the display screen is avoided.

Fig. 1 is a schematic sectional view of a waterproof structure of a display screen, and fig. 2 is a schematic structural view of the waterproof structure of the display screen.

Referring to fig. 1 and 2, the present application provides a waterproof structure of a display screen, where the display screen is an LED display screen, and includes one of a conventional LED display screen, a grid screen, and an LED transparent screen.

The LED display screen has the advantages of high luminous brightness, high luminous efficiency, bright color, high contrast, short corresponding time, wide working temperature range, low energy consumption and the like, and is widely applied to stage display equipment, advertisement display equipment, data visualization display equipment and commercial display equipment.

When the LED display screen is applied to outdoor advertising display, certain windproof and waterproof functions are required, waterproof treatment is usually required to be carried out at the position where the display module and the box body are contacted, and damage to electrical elements caused by water vapor entering the display screen is avoided.

The waterproof construction that this embodiment provided can be used to the waterproof sealing between the display module assembly and the box of display screen, is particularly useful for the waterproof of display module assembly signal interface.

The waterproof structure comprises a bottom shell 1, a waterproof ring 2, a box body 3 and a cover plate 4; the bottom shell 1 is provided with a mounting groove 11; the waterproof ring 2 is arranged in the mounting groove 11 and is matched with the mounting groove 11; the box body 3 is covered on the bottom shell 1, and the box body 3 and the bottom shell 1 can be fixedly connected through connecting pieces such as magnetic absorbing pieces and screws; the waterproof ring 2 is arranged between the mounting groove 11 and the box body 3, and the front surface and the side wall of the waterproof ring 2 are respectively abutted against the box body 3; the cover plate 4 is arranged on the bottom shell 1 in a penetrating mode and is clamped with the bottom shell 1, and the waterproof ring 2 is fixed between the bottom shell 1 and the box body 3. Above-mentioned waterproof construction is with waterproof circle 2 embedding drain pan 1's mounting groove 11 to make waterproof circle 2 openly all with the 3 butts of box with the lateral wall, realized openly waterproof and waterproof multiple waterproof construction in side between waterproof circle 2 and the box 3, improved waterproof sealing effect effectively. Further, waterproof circle 2 passes through 4 joints of apron on drain pan 1, easy dismounting to drain pan 1 is stable to the pressure that waterproof circle 2 was applyed, has avoided influencing the roughness of display screen face or waterproof circle 2 compression undersize and cause the water-proof effects not enough because of waterproof circle 2 compression is too big.

It should be noted that the front side of the present embodiment and the following description refers to the side of the display screen facing the user during normal use; the back refers to the side of the display screen that faces away from the user during normal use.

Fig. 5 is a schematic structural view of the cover plate 4.

As shown in fig. 1 and 5, further, the mounting groove 11 is an annular groove, the cover plate 4 is disposed inside the mounting groove 11, one end of the cover plate 4 facing the box body 3 is provided with a circumferential flange 41, one side of the flange 41 facing the bottom case 1 is respectively abutted against the back of the waterproof ring 2 and the back of the bottom case 1, and the waterproof ring 2 is fixed on the bottom case 1; flange 41 sets up the rear end at apron 4, and display screen lamp plate 200's one end is kept away from to apron 4 promptly, presses waterproof circle 2 to mounting groove 11 through this flange 41, makes waterproof circle 2 fix in mounting groove 11.

The flange 41 is also abutted against the back of the bottom case 1, so that the waterproof ring 2 cannot be pressed to the mounting groove 11 any more after the cover plate 4 is contacted with the back of the bottom case 1, and the cover plate 4 is ensured to generate stable pressure on the waterproof ring 2, thereby ensuring that the compression amount of the waterproof ring 2 is stable.

One end of the cover plate 4 far away from the box body 3 is provided with a clamping portion 42 extending towards the bottom shell 1, and the clamping portion 42 is fixed on one side of the bottom shell 1 towards the display screen lamp panel 200. The snap-in part 42 has a catch projecting towards the outside of the cover plate 4, it being understood that the catch has a certain deformability. The cover plate 4 is clamped on one side of the bottom shell 1, which is back to the box body 3, through the elastic deformation performance of the buckle, so that the waterproof ring 2 is installed quickly.

In a specific embodiment, the clamping portions 42 are L-shaped with the openings facing outward, and include four, and are respectively and symmetrically arranged on the upper portion and the lower portion of the cover plate 4, so that not only can the connection stability of the cover plate 4 be ensured, but also the cover plate 4 is more labor-saving when being clamped into the bottom shell 1.

Fig. 3 is a first structural diagram of the waterproof ring, fig. 4 is a second structural diagram of the waterproof ring, and fig. 6 is a partial structural diagram of the bottom case.

As shown in fig. 1, 3, 4 and 6, a first step surface 111 is formed on an inner groove wall of the mounting groove 11 on a side close to the cover plate 4, the waterproof ring 2 includes a groove portion 21 and a positioning portion 22, the groove portion 21 is disposed in the mounting groove 11, the positioning portion 22 is connected to a groove wall of the groove portion 21 on a side close to the cover plate 4, and the positioning portion 22 is limited between the cover plate 4 and the first step surface 111. Specifically, the positioning portion 22 protrudes toward the cover body, so that a second step surface is formed on the outer side of the connection between the positioning portion 22 and the groove portion 21, and the second step surface abuts against the first step surface 111, that is, one end of the positioning portion 22 abuts against the flange 41 of the cover plate 4, and the other end abuts against the second step surface, so that the movement of the waterproof ring 2 in the front and rear positions is limited, and the sealing performance between the waterproof ring 2 and the bottom case 1 is improved.

As shown in fig. 1 and 4, further, the groove portion 21 includes a groove 211 circumferentially provided along the outer periphery of the waterproof ring 2, a notch of the groove 211 is provided toward the case body 3, and the case body 3 abuts on the groove 211. The concrete, the tank bottom interference fit of the recess 211 of box 3 and waterproof circle 2 forms the waterproof construction of front contact, and when steam got into from the gap between display module assembly and the box 3, when in this recess 211, the further entering of steam can be blockked in being connected between recess 211 and the box 3, realizes water-proof effects.

Furthermore, one or more first convex rings 221 protruding outward are arranged on the positioning portion 22, the first convex rings 221 are arranged along the circumferential direction of the outer side wall of the positioning portion 22, and the first convex rings 221 are abutted against the side wall of the box body 3. The first convex ring 221 contacts with the side face of the box body 3, so that the side face between the waterproof ring 2 and the box body 3 is waterproof, and the waterproof effect of the waterproof structure is further improved.

Water vapor can enter the display screen from a gap between the outer groove wall of the mounting groove of the bottom shell in the waterproof structure and the box body, the gap is smaller and is generally about 1mm, and therefore only a small amount of water vapor can pass through the gap; the contact position of the first convex ring 221 and the box body 3 is positioned behind the contact position of the groove 211 and the box body 3 along the direction that water vapor enters the display screen, most of the water vapor is intercepted after passing through the contact position of the groove 211 and the box body 3, and a small amount of water vapor reaches the first convex ring 221 through the contact position of the groove 211 and the box body 3 and is blocked by the first convex ring 221 again; therefore, when the waterproof ring 2 is provided with the first convex ring 221, the damage to the electric element caused by the fact that water vapor enters the display screen can be almost prevented, and the water vapor can be more completely prevented by arranging more than two first convex rings 221.

In some embodiments of the present application, the first protruding ring 221 is provided with two, and the two first protruding rings 221 are arranged at intervals, so that it can be ensured that water vapor cannot enter the display screen to damage the electric element, and the structure of the waterproof ring 2 is simplified.

Fig. 7 is a schematic structural diagram of the bottom case, fig. 8 is a schematic structural diagram of the case body, and fig. 9 is a schematic structural diagram of the case body.

As shown in fig. 1, 6, 7, 8 and 9, further, a mounting hole 12 is provided on the bottom case 1, a through hole 31 corresponding to the mounting hole 12 is provided in the box body 3, the mounting groove 11 is provided around the mounting hole 12, an annular protrusion 32 protruding toward the bottom case 1 is provided on the periphery of the through hole 31, the annular protrusion 32 is provided in the groove 211, and the free end of the annular protrusion 32 abuts against the groove 211. The aperture of via hole 31 is greater than the aperture of mounting hole 12, and lateral wall and apron 4 setting between location portion 22, the mounting groove 11 of drain pan 1 and the mounting hole 12 of waterproof circle 2 are inboard at via hole 31, and the annular that lies in the via hole 31 periphery on the box 3 is protruding 32 and the recess 211 interference fit of waterproof circle 2, makes to form sealed waterproof construction between box 3, waterproof circle 2, drain pan 1 and the apron 4. Because of still being connected through other connecting pieces between box 3 and the drain pan 1, relative position between them is invariable, therefore the positive pressure that box 3 produced to the recess 211 of waterproof circle 2 is stable, can not influence the roughness of display screen face.

In the embodiment, the back of box 3 is formed with the recessed installation cavity of orientation drain pan 1, and this via hole 31 sets up in this installation cavity, and waterproof circle 2 and apron 4 all do not surpass this installation cavity in the one side of drain pan 1 dorsad, do not influence the roughness at the 3 backs of box, and the installation of the box 3 of being convenient for is fixed.

In some embodiments of the present application, the groove portion 21 further includes a second protruding ring 212 and a third protruding ring 213, the second protruding ring 212 and the third protruding ring 213 are connected below the groove 211, a free end of the second protruding ring 212 and a free end of the third protruding ring 213 are connected on the groove bottom of the mounting groove 11, the second protruding ring 212 and the third protruding ring 213 are disposed in an inclined manner, and a distance between a connecting end of the second protruding ring 212 and a connecting end of the third protruding ring 213 is smaller than a distance between a free end of the second protruding ring 212 and a free end of the third protruding ring 213; the width of the mounting groove 11 is greater than the distance between the second and third protruding rings 212 and 213. When box 3 extrudes waterproof circle 2 to drain pan 1, second bulge loop 212 and third bulge loop 213 are to outside deformation, exert the pressure of waterproof circle 2 to box 3 and play the cushioning effect, prevent that waterproof circle 2 from being excessively extrudeed and influence the roughness of display screen face. The second and third collars 212 and 213 are inclined outward so as to be deformed outward when pressed without interfering with each other.

Further, the distances between the second convex ring 212 and the third convex ring 213 and the corresponding groove walls of the installation groove 11 are equal, so that the second convex ring 212 and the third convex ring 213 have the same displacement space when being deformed by being pressed by the box body 3, and the two sides of the groove 211 are uniformly stressed.

It can be understood that the protruding heights of the second protruding ring 212 and the third protruding ring 213 are the same, so that the second protruding ring 212 and the third protruding ring 213 can uniformly distribute the pressure of the box body 3, and ensure the sealing performance between the waterproof ring 2 and the box body 3 and the bottom case 1.

Specifically, the wall thickness of the waterproof ring 2 is thin and is 0.9-1.0mm, the waterproof ring 2 is made of a material with certain hardness and deformation capacity, for example, the waterproof ring 2 is formed by injection molding of 30-degree silica gel, the shrinkage ratio of the waterproof ring 2 made of the material is small, and the sealing performance of the waterproof ring 2 is ensured; in addition, still have tear resistance strong, acid and alkali-resistance ageing, longer advantage of life makes this waterproof construction not need frequent maintenance, improves and uses experience.

In some embodiments of the present application, a protrusion 112 is disposed on a bottom of the mounting groove 11, the protrusion 112 is disposed between the second protrusion ring 212 and the third protrusion ring 213 and spaced apart from the second protrusion ring 212 and the third protrusion ring 213, and when the waterproof ring 2 is compressed toward the bottom case 1 by the case body 3, the protrusion 112 forces the second protrusion ring 212 and the third protrusion ring 213 to move outward. The second and third collars 212, 213 are moved in the designated deformation direction. Specifically, the protruding portion 112 is also annular, and ensures that all the parts of the second protruding ring 212 and the third protruding ring 213 deform outward when being pressed.

Fig. 10 is a schematic structural diagram of a display screen.

As shown in fig. 10, this application on the other hand still provides a display screen, and the display screen includes as above any display screen waterproof construction, still include display screen lamp plate 200 and control device (not shown in the figure), display screen lamp plate 200 is fixed in drain pan 1 and is kept away from one side of box 3, control device and display screen lamp plate 200 electric connection. Display screen lamp plate 200 can include one or polylith, and when display screen lamp plate 200 includes the polylith, polylith display screen lamp plate 200 is the display and arranges on drain pan 1, forms a holistic display screen face.

The bottom shell 1 and the box body 3 are connected through magnetic attraction of the magnetic parts, so that the bottom shell is convenient to disassemble and assemble, the distance between the bottom shell 1 and the box body 3 is easy to control, and the flatness of the screen surface of the display screen is guaranteed.

In this embodiment, the waterproof structure is used for waterproofing a signal interface of a display screen, the cover plate 4 is of an annular structure, the signal interface element 300 is arranged inside the cover plate 4 in a penetrating manner, and the signal interface element 300 is electrically connected with a control circuit of the display screen and used for connecting a signal connecting line of the display screen externally.

To sum up, this application is through 2 gomphosis of waterproof circle in the mounting groove 11 of drain pan 1, and make the front of box 3 and side all with waterproof circle 2 butts, make and form multichannel waterproof construction between box 3 and the waterproof circle 2, realize openly waterproof with the side, improved this waterproof construction's water-proof effects. The structure does not need to reprocess the box body 3 or the bottom shell 1, and the structure is simple;

in addition, waterproof circle 2 is fixed on drain pan 1 through apron 4, and the buckle is connected between apron 4 and the drain pan 1, easy dismounting, and apron 4 is stable to the pressure that waterproof circle 2 was applyed, has avoided excessively to extrude waterproof circle 2 and has caused the screen unevenness of display screen or waterproof circle 2 compression capacity not enough and cause water-proof effects unsatisfactory.

It should be understood that equivalents and modifications based on the technical solutions of the present application and the application concepts thereof can be made by those skilled in the art, and all such modifications and modifications should be included in the scope of the claims appended to the present application.

Claims (10)

1. A waterproof structure of a display screen, comprising:

the bottom shell is provided with a mounting groove;

the waterproof ring is arranged in the mounting groove and is matched with the mounting groove;

the box body is covered on the bottom shell, the waterproof ring is arranged between the mounting groove and the box body, and the front surface and the side wall of the waterproof ring are respectively abutted against the box body;

and the cover plate is arranged on the bottom shell in a penetrating manner, is clamped with the bottom shell and is used for fixing the waterproof ring between the bottom shell and the box body.

2. The waterproof structure of the display screen according to claim 1, wherein the mounting groove is an annular groove, the cover plate is disposed inside the mounting groove, a circumferential flange is disposed at an end of the cover plate facing the cabinet, and the flanges are respectively abutted against a back surface of the waterproof ring and a back surface of the bottom case to fix the waterproof ring to the bottom case;

the one end that the apron was kept away from the box is equipped with the orientation the joint portion that the drain pan extends, joint portion fixes one side of drain pan towards the display screen lamp plate.

3. The waterproof structure of the display screen according to claim 1, wherein a first step surface is formed on an inner groove wall of one side of the mounting groove close to the cover plate, the waterproof ring includes a groove portion and a positioning portion, the groove portion is disposed in the mounting groove, the positioning portion is connected to a groove wall of one side of the groove portion close to the cover plate, and the positioning portion is limited between the cover plate and the first step surface.

4. The waterproof structure of a display screen according to claim 3, wherein the groove portion includes a groove provided circumferentially along an outer periphery of the waterproof ring, a notch of the groove is provided toward a box body, and the box body abuts on the groove.

5. The waterproof structure of the display screen according to claim 4, wherein the positioning portion is provided with one or more first protruding rings protruding outward, the first protruding rings are circumferentially arranged along an outer side wall of the positioning portion, and the first protruding rings abut against the box body.

6. The waterproof structure of a display screen according to claim 5, wherein the first protruding ring is provided in two numbers, and the two first protruding rings are provided at an interval.

7. The waterproof structure of a display screen according to claim 4, wherein a mounting hole is provided in the bottom case, a via hole corresponding to the mounting hole is provided in the box body, the mounting groove is provided around the mounting hole, an annular protrusion protruding toward the bottom case is provided on the periphery of the via hole, the annular protrusion is provided in the groove, and the free end of the annular protrusion abuts against the groove.

8. The waterproof structure of a display screen according to claim 4, wherein the groove portion further comprises a second protruding ring and a third protruding ring, the second protruding ring and the third protruding ring are connected below the groove, the second protruding ring and the third protruding ring are connected to the groove bottom of the mounting groove, the second protruding ring and the third protruding ring are arranged obliquely with respect to each other, and a distance between a connecting end of the second protruding ring and a connecting end of the third protruding ring is smaller than a distance between a free end of the second protruding ring and a free end of the third protruding ring; the width of the mounting groove is larger than the distance between the second convex ring and the third convex ring.

9. The waterproof structure of the display screen according to claim 8, wherein a protrusion is provided on a bottom of the mounting groove, and the protrusion is provided between the second convex ring and the third convex ring and spaced from the second convex ring and the third convex ring.

10. A display screen, characterized in that, includes the waterproof construction of display screen of any one of claims 1-9, still includes display screen lamp plate and control device, the display screen lamp plate is fixed the drain pan is kept away from one side of box, control device with display screen lamp plate electric connection.

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