CN106448457B

CN106448457B - Display device

Info

Publication number: CN106448457B
Application number: CN201610810804.7A
Authority: CN
Inventors: 王定芳; 王勇
Original assignee: Leyard Optoelectronic Co Ltd
Current assignee: Leyard Optoelectronic Co Ltd
Priority date: 2016-09-08
Filing date: 2016-09-08
Publication date: 2022-09-09
Anticipated expiration: 2036-09-08
Also published as: CN106448457A

Abstract

The present invention provides a display device including: a box body; the lamp panel is arranged in the box body; first location structure sets up in the box, and first location structure matches and fixes a position the lamp plate in the box with the lateral wall of lamp plate. The technical scheme of the invention solves the problem of low assembly efficiency of the display device in the prior art.

Description

Display device

Technical Field

The invention relates to the technical field of display equipment, in particular to a display device.

Background

The mounting methods of the lamp panel and the box body in the display device in the prior art are as follows: the mounting holes of the lamp panel and the mounting holes in the box body are aligned and then connected through the connecting bolts. The alignment mode of foretell lamp plate and box is complicated, and difficult operation, and then makes the installation effectiveness of lamp plate and box low.

Disclosure of Invention

The invention mainly aims to provide a display device to solve the problem of low assembly efficiency of the display device in the prior art.

In order to achieve the above object, the present invention provides a display device comprising: a box body; the lamp panel is arranged in the box body; first location structure sets up in the box, and first location structure matches and fixes a position the lamp plate in the box with the lateral wall of lamp plate.

Further, first location structure includes diaphragm and vertical plate, encloses into installation space between diaphragm and the vertical plate, and the lamp plate setting is in installation space.

Further, the transverse plate and the longitudinal plate are vertically arranged.

Furthermore, the diaphragm is a plurality of, and the vertical plate is a plurality of, encloses into a plurality of installation space between a plurality of diaphragms and a plurality of vertical plate, and the lamp plate is a plurality of, and a plurality of lamp plates and a plurality of installation space one-to-one set up.

Further, display device still includes fixed frame, and fixed frame setting is in installation space, and the lamp plate setting is on fixed frame.

Furthermore, a positioning through hole is formed in the fixing frame, and a lamp bead of the lamp panel is arranged in the positioning through hole in a penetrating mode to fix the relative position between the lamp panel and the fixing frame.

Further, be provided with second location structure on the lateral wall of diaphragm and/or vertical plate, be provided with on the lamp plate with second location structure complex third location structure.

Further, the second positioning structure and the third positioning structure are respectively a positioning protrusion and a positioning recess.

Further, the box includes: the first panel is made of transparent materials; and a first annular sidewall connected to the first panel, wherein the lateral plate and the longitudinal plate are connected to the first panel, or the lateral plate and the longitudinal plate are connected to an inner surface of the first annular sidewall.

Furthermore, two ends of the transverse plate are respectively connected to the inner surface of the first annular side wall, and two ends of the longitudinal plate are respectively connected to the inner surface of the first annular side wall.

Further, the first panel and the first annular sidewall are removably connected.

Further, the box still includes: the second panel is arranged on one side, far away from the first panel, of the first annular side wall, and a mounting opening is formed in the second panel.

Further, the box still includes: the second annular side wall is arranged at the mounting opening; and the cover plate is detachably arranged on the second annular side wall.

Further, a guide structure is arranged between the second annular side wall and the cover plate.

Further, the guide structure includes: the guide flanging is arranged on the second annular side wall; the guide groove is arranged on the cover plate, and the guide flanging is matched with the guide groove.

Furthermore, a rolling structure is arranged in the guide groove.

Further, the cover plate includes: the guide grooves are respectively arranged on two opposite sides of the plate body; the backstop turn-ups sets up in the border department of plate body and lies in between two guide ways, the surface cooperation of backstop turn-ups and second annular lateral wall.

Further, the display device further includes: and the locking piece is arranged between the second annular side wall and the edge of the plate body opposite to the stop flange.

Further, the locking piece is the rotor that rotationally sets up on the apron, and the rotor includes the backstop chimb, and rotatory rotor makes the backstop chimb backstop second annular lateral wall's surface, perhaps makes the backstop chimb keep away from second annular lateral wall and dodge second annular lateral wall.

Further, the second annular side wall is provided with a ventilation hole.

Further, the first annular side wall includes a slanted wall section, and the display device includes a plurality of interconnected boxes, the slanted wall sections of adjacent boxes forming a drainage channel.

Furthermore, a waterproof rubber strip is arranged between the adjacent box bodies.

By applying the technical scheme of the invention, the display device comprises a first positioning structure. When the lamp plate is required to be installed, the first positioning structure is matched with the side wall of the lamp plate, so that the lamp plate is positioned. Above-mentioned structure makes the installation lamp plate easy and simple to handle to improve the assembly efficiency of lamp plate. Therefore, the technical scheme of the invention solves the problem of low assembly efficiency of the display device in the prior art.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:

fig. 1 shows a schematic rear side three-dimensional structure of an embodiment of a display device according to the invention;

FIG. 2 shows a schematic front side perspective view of an embodiment of the display device of FIG. 1;

FIG. 3 shows an exploded view of the display device of FIG. 1;

FIG. 4 shows an enlarged schematic view at A in FIG. 3;

FIG. 5 shows an enlarged schematic view at B in FIG. 3;

FIG. 6 is a schematic diagram showing a rear structure of the case of FIG. 3;

FIG. 7 shows an enlarged schematic view at C of FIG. 6;

FIG. 8 shows a rear schematic view of the case of FIG. 6;

fig. 9 is a schematic view showing a structure of a cover plate of the display device of fig. 1;

FIG. 10 shows a schematic top view of the cover plate of FIG. 9;

FIG. 11 shows an enlarged schematic view at D of FIG. 10;

fig. 12 is a schematic structural diagram of a lamp panel of the display device in fig. 1;

FIG. 13 is a schematic diagram showing a rear side structure of the lamp panel in FIG. 12;

fig. 14 shows a schematic top view of the display device of fig. 1;

fig. 15 shows an enlarged schematic view at E of the display device in fig. 14;

FIG. 16 is an assembly view of multiple housings of the display device of FIG. 1;

FIG. 17 shows an enlarged schematic view at F in FIG. 16;

FIG. 18 shows a schematic top view of the display device of FIG. 16; and

fig. 19 shows a perspective view of the display device of fig. 16.

Wherein the figures include the following reference numerals:

10. a box body; 11. a first panel; 12. a first annular sidewall; 121. an oblique wall section; 13. a second panel; 131. an installation port; 14. a second annular sidewall; 15. a cover plate; 151. a plate body; 152. the stop flanging; 20. a lamp panel; 21. a lamp bead; 30. a first positioning structure; 31. a transverse plate; 32. a longitudinal plate; 40. a guide structure; 41. guiding flanging; 42. a guide groove; 50. a rolling structure; 60. a locking member; 61. a stop flange; 70. a ventilation hole; 80. a waterproof adhesive tape; 90. a fixing frame; 91. positioning the through hole; 100. and a second positioning structure.

Detailed Description

It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the application, its application, or uses. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.

The relative arrangement of the components and steps, the numerical expressions, and numerical values set forth in these embodiments do not limit the scope of the present application unless specifically stated otherwise. Meanwhile, it should be understood that the sizes of the respective portions shown in the drawings are not drawn in an actual proportional relationship for the convenience of description. Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate. In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be discussed further in subsequent figures.

In the description of the present application, it is to be understood that the orientation or positional relationship indicated by the directional terms such as "front, rear, upper, lower, left, right", "lateral, vertical, horizontal" and "top, bottom", etc., are generally based on the orientation or positional relationship shown in the drawings, and are used for convenience of description and simplicity of description only, and in the case of not making a reverse description, these directional terms do not indicate and imply that the device or element being referred to must have a particular orientation or be constructed and operated in a particular orientation, and therefore, should not be considered as limiting the scope of the present application; the terms "inner and outer" refer to the inner and outer relative to the profile of the respective component itself.

Spatially relative terms, such as "above … …," "above … …," "above … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial relationship to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device in the figures is turned over, devices described as "above" or "on" other devices or configurations would then be oriented "below" or "under" the other devices or configurations. Thus, the exemplary term "above … …" can include both an orientation of "above … …" and "below … …". The device may be otherwise variously oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

It should be noted that the terms "first", "second", and the like are used to define the components, and are only used for convenience of distinguishing the corresponding components, and the terms have no special meanings unless otherwise stated, and therefore, the scope of protection of the present application is not to be construed as being limited.

As shown in fig. 1 to fig. 3, the display device of the present embodiment includes a box 10, a lamp panel 20, and a first positioning structure 30. Wherein, lamp plate 20 sets up in box 10. First location structure 30 sets up in box 10, and first location structure 30 matches and fixes a position lamp plate 20 in box 10 with lamp plate 20's lateral wall.

With the technical solution of this embodiment, the display device includes the first positioning structure 30. When lamp plate 20 is installed to needs, it is that the lateral wall of first location structure 30 and lamp plate 20 cooperates to accomplish lamp plate 20's location. Above-mentioned structure makes installation lamp plate 20 easy and simple to handle to improve lamp plate 20's assembly efficiency. Therefore, the technical scheme of the embodiment solves the problem of low assembly efficiency of the display device in the prior art.

As shown in fig. 3, in the technical solution of this embodiment, the first positioning structure 30 includes a horizontal plate 31 and a vertical plate 32, an installation space is enclosed between the horizontal plate 31 and the vertical plate 32, and the lamp panel 20 is disposed in the installation space. Specifically, the transverse plates 31 and the longitudinal plates 32 are arranged in a staggered mode, and the space surrounded by the transverse plates 31 and the longitudinal plates 32 is matched with the shape of the lamp panel, so that the lamp panel is embedded into the mounting space surrounded by the transverse plates 31 and the longitudinal plates 32 when the lamp panel 20 is mounted.

As shown in fig. 6, in the present embodiment, the horizontal plate 31 and the vertical plate 32 are vertically disposed. The installation space can be rectangular or square through the arrangement mode. The installation control is suitable for the square lamp panel. Of course, if the lamp panel 20 is a lamp panel with other shapes, the shapes and the position relationship between the horizontal plate 31 and the vertical plate 32 can be adjusted adaptively. So that the installation space is adapted to the shape of the lamp panel 20.

Preferably, the transverse plates 31 are multiple, the longitudinal plates 32 are multiple, multiple installation spaces are defined between the transverse plates 31 and the longitudinal plates 32, the lamp panels are multiple, and the lamp panels 20 and the installation spaces are arranged in a one-to-one correspondence manner. The number of the horizontal plates 31 and the vertical plates 32 may be determined according to the number of the lamp panels 20.

As shown in fig. 6 to 8, in the present embodiment, the display device further includes a fixing frame 90, the fixing frame 90 is disposed in the installation space, and the lamp panel 20 is disposed on the fixing frame 90. Specifically, the fixing frame 90 is disposed at the outer side edge of the transverse plate 31 and the longitudinal plate 32, and when the lamp panel 20 is installed, the lamp panel 20 is attached to the fixing frame 90 and is positioned.

As shown in fig. 6 to 8, 12 and 13, in the technical solution of this embodiment, a positioning through hole 91 is provided on the fixing frame 90, and the lamp bead 21 of the lamp panel 20 is inserted into the positioning through hole 91 to fix the relative position between the lamp panel 20 and the fixing frame 90. Specifically, be provided with a plurality of square through-holes on the fixed frame 90, be provided with a plurality of lamp pearls 21 on the lamp plate 20. A plurality of positioning hole 91 and a plurality of lamp pearl one-to-one set up. When installation lamp plate 20, with the laminating of lamp plate 20 on fixed frame 90 to pass positioning hole 91 with lamp pearl 21 from back to front. Above-mentioned structure does not influence display device's display effect on the one hand, and on the other hand can realize the location of lamp plate 20 on vertical face.

As shown in fig. 6 and 7, in the technical solution of this embodiment, the lateral walls of the horizontal plate 31 and the vertical plate 32 are provided with a second positioning structure 100, and the lamp panel 20 is provided with a third positioning structure matched with the second positioning structure 100. Specifically, the position of the rear side of lamp plate 20 can be located by second location structure 100 and third location structure to completely locate lamp plate 20 in installation space.

Further, in order to enable the lamp panel 20 to be tightly installed in the installation space, a filler, such as a sponge, a rubber block, etc., may be disposed between the lamp panel 20 and the horizontal plate 31 and the vertical plate 32. Foretell filler can make the lamp plate jam tightly in installation space to prevent that lamp plate 20 from rocking.

As shown in fig. 7, in the solution of the present embodiment, the second positioning structure 100 and the third positioning structure are a positioning protrusion and a positioning recess, respectively. The location is sunken to be set up on lamp plate 20's side. Specifically, when installation lamp plate 20, thereby realize lamp plate 20's location with protruding embedding of location to the location in sunken.

As shown in fig. 14 and 15, in the solution of the present embodiment, the box 10 includes a first panel 11 and a first annular side wall 12. The first panel 11 is made of transparent material; a first annular sidewall 12 is attached to the first panel 11. Wherein the horizontal plate 31 and the vertical plate 32 are connected to the first panel 11, or the horizontal plate 31 and the vertical plate 32 are connected to the inner surface of the first annular sidewall 12. Specifically, enclose between first panel 11 and the first annular lateral wall 12 and enclose and hold the chamber, lamp plate 20 installs and holds the intracavity. While the transverse plate 31 and the longitudinal plate 32 are fixedly arranged in the accommodating cavity.

As shown in fig. 6, in the solution of the present embodiment, two ends of the horizontal plate 31 are respectively connected to the inner surface of the first annular side wall 12, and two ends of the vertical plate 32 are respectively connected to the inner surface of the first annular side wall 12. Specifically, the lateral plate 31 has both ends connected to the left and right ends of the first annular side wall 12, and the longitudinal plate 32 has both ends connected to the upper and lower ends of the first annular side wall.

Preferably, the first panel 11 and the first annular side wall 12 are removably connected. Can be convenient for maintain lamp plate 20 through dismantling first panel 11.

As shown in fig. 8, 14 and 15, in the present embodiment, the case 10 further includes: and a second panel 13 disposed on a side of the first annular sidewall 12 away from the first panel 11, wherein the second panel 13 is provided with a mounting opening 131. Specifically, the size of the mounting opening 131 is smaller than the space surrounded by the first annular sidewall 12. Specifically, when the lamp panel 20 is installed, the lamp panel 20 enters from the installation opening 131 and is installed in the installation space.

As shown in fig. 14 and 15, in the solution of the present embodiment, the box body 10 further includes a second annular side wall 14 and a cover plate 15. The second annular side wall 14 is provided at the mounting opening 131, and the cover plate 15 is detachably provided on the second annular side wall 14. The space enclosed by the second annular side wall 14 is used for routing and placing other electrical equipment. The cover 15 can be removed for maintenance or replacement of the electrical equipment inside.

As shown in fig. 4 and 5, in the solution of the present embodiment, a guiding structure 40 is provided between the second annular side wall 14 and the cover plate 15. Specifically, the guide structure 40 includes a guide flange 41 and a guide groove 42. Specifically, the guide flange 41 is provided on the second annular side wall 14, the guide groove 42 is provided on the cover plate 15, and the guide flange 41 is engaged with the guide groove 42. Specifically, when the cover plate 15 is mounted, the cover plate 15 is first placed on the side of the second annular side wall 14, and then the guide flanges 41 are snapped into the guide grooves 42. Pushing the cover 15 causes the guide flanges 41 to slide within the guide slots 42, eventually causing the cover 15 to be installed in place.

As shown in fig. 9 to 11, in the present embodiment, a rolling structure 50 is provided in the guide groove 42. The rolling structure 50 can make the guide flange 41 slide more smoothly between the guide grooves 42, on one hand, the installation by an operator is convenient, and on the other hand, the service life of the product can be prolonged.

As shown in fig. 11, in the solution of the present embodiment, the cover plate 15 includes a plate body 151 and a stop flange 152. Two guide grooves 42 are provided, and the two guide grooves 42 are respectively disposed on two opposite sides of the plate body 151. Stop flanges 152 are provided at the edge of the plate 151 between the two guide grooves 42, the stop flanges 152 cooperating with the outer surface of the second annular side wall 14. Specifically, the cover plate 15 is installed from above the second annular side wall 14, and after the cover plate 15 is slid into place, the stopper flange 152 abuts against the second annular side wall 14 to position the upper side of the cover plate 15.

As shown in fig. 16 and 17, in the present embodiment, the display device further includes a locking member 60. The locking element 60 is arranged between the second annular side wall 14 and the edge of the plate 151 opposite the stop flange 152. The locking member 60 is used to position the lower end of the cover plate 15.

As shown in fig. 17, in the solution of the present embodiment, the locking member 60 is a rotating plate rotatably disposed on the cover plate 15, and the rotating plate includes a stop flange 61, and the rotating plate is rotated to make the stop flange 61 stop the outer surface of the second annular sidewall 14, or make the stop flange 61 move away from the second annular sidewall 14 and avoid the second annular sidewall 14. Specifically, when the cover plate 15 is mounted or the cover plate 15 is dismounted, the rotor plate is rotated to a position where the stopper flange 61 is retracted from the second annular side wall 14, thereby enabling the cover plate 15 to slide freely. When the cover plate 15 is slid into place, the rotating plate is rotated and the stop flange 61 is caused to stop the second annular side wall 14, and the cover plate 15 is fixed to the second annular side wall 14. As can be seen from the above description, the cover plate 15 of the present embodiment does not need screws or other connectors during installation, and installation is more convenient.

As shown in fig. 5, in the solution of the present embodiment, the second annular side wall 14 is provided with ventilation holes 70. In particular, the airing holes 70 are pin-hole type airing holes, so that the airing holes 70 can perform an airing function, while water cannot enter into the case body 10,

as shown in fig. 15 and 18, in the present embodiment, the first annular side wall 12 includes inclined wall sections 121, the display device includes a plurality of interconnected boxes 10, and the inclined wall sections 121 of adjacent boxes 10 form a drainage channel. Specifically, when water enters between the cases 10, the water can be discharged through the drainage groove, thereby preventing the water from being accumulated between the cases 10.

As shown in fig. 18 and 19, in the solution of the present embodiment, a waterproof rubber strip 80 is provided between adjacent cases 10. The waterproof rubber strip 80 can allow water to enter from the rear side of the case 10 to the front end of the case 10. Further, when the display device is of a top-hung type, the waterproof rubber strip 80 can prevent water from dropping from above.

As can be seen from the above description, the display device of the present application has the characteristics of simple installation and good waterproof performance, and further, the display device of the present application is particularly suitable for a top-hung display device.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A display device, comprising:

a case (10);

the lamp panel (20) is arranged in the box body (10);

the first positioning structure (30) is arranged in the box body (10), and the first positioning structure (30) is matched with the side wall of the lamp panel (20) and used for positioning the lamp panel (20) in the box body (10);

the case (10) includes:

a first panel (11) for supporting the first panel,

a first annular side wall (12) connected to said first panel (11),

the box (10) further comprises:

a second panel (13) disposed on a side of the first annular sidewall (12) away from the first panel (11), the second panel (13) having a mounting opening (131)

The box (10) further comprises:

a second annular side wall (14) provided at the mounting opening (131);

a cover plate (15) removably arranged on said second annular side wall (14);

a guide structure (40) is arranged between the second annular side wall (14) and the cover plate (15)

The guide structure (40) comprises:

a guide flange (41) arranged on the second annular side wall (14);

the guide groove (42) is arranged on the cover plate (15), and the guide flanging (41) is matched with the guide groove (42).

2. The display device according to claim 1, wherein the first positioning structure (30) comprises a transverse plate (31) and a longitudinal plate (32), an installation space is enclosed between the transverse plate (31) and the longitudinal plate (32), and the lamp panel (20) is arranged in the installation space.

3. The display device according to claim 2, wherein the lateral plate (31) and the longitudinal plate (32) are vertically disposed.

4. The display device according to claim 2, wherein the number of the horizontal plates (31) is plural, the number of the vertical plates (32) is plural, a plurality of installation spaces are defined between the plurality of horizontal plates (31) and the plurality of vertical plates (32), the number of the lamp panels is plural, and the plurality of the lamp panels (20) and the plurality of installation spaces are arranged in a one-to-one correspondence manner.

5. The display device according to claim 2, further comprising a fixing frame (90), wherein the fixing frame (90) is disposed in the installation space, and wherein the lamp panel (20) is disposed on the fixing frame (90).

6. The display device according to claim 5, wherein a positioning through hole (91) is provided on the fixing frame (90), and the lamp bead (21) of the lamp panel (20) is inserted into the positioning through hole (91) to fix the relative position between the lamp panel (20) and the fixing frame (90).

7. The display device according to claim 2, wherein a second positioning structure (100) is disposed on a side wall of the horizontal plate (31) and/or the vertical plate (32), and a third positioning structure matched with the second positioning structure (100) is disposed on the lamp panel (20).

8. The display device according to claim 7, wherein the second positioning structure (100) and the third positioning structure are a positioning protrusion and a positioning recess, respectively.

9. The display device according to any one of claims 2 to 8, wherein the first panel (11) is made of a transparent material; wherein the transverse plate (31) and the longitudinal plate (32) are connected to the first panel (11) or the transverse plate (31) and the longitudinal plate (32) are connected to the inner surface of the first annular side wall (12).

10. The display device according to claim 9, wherein the transverse plate (31) is connected at both ends thereof to the inner surface of the first annular side wall (12), and the longitudinal plate (32) is connected at both ends thereof to the inner surface of the first annular side wall (12).

11. A display device as claimed in claim 9, characterised in that the first panel (11) and the first annular side wall (12) are detachably connected.

12. The display device according to claim 9, wherein a rolling structure (50) is provided in the guide groove (42).

13. The display device according to claim 9, wherein the cover plate (15) comprises:

the number of the guide grooves (42) is two, and the two guide grooves (42) are respectively arranged on two opposite sides of the plate body (151);

the stop flange (152) is arranged at the edge of the plate body (151) and located between the two guide grooves (42), and the stop flange (152) is matched with the outer surface of the second annular side wall (14).

14. The display device according to claim 13, further comprising:

a locking element (60), said locking element (60) being arranged between said second annular lateral wall (14) and the edge of said plate body (151) opposite to said stop flange (152).

15. The display device according to claim 14, wherein the locking member (60) is a rotating plate rotatably disposed on the cover plate (15), the rotating plate includes a stop flange (61), and rotating the rotating plate causes the stop flange (61) to stop the outer surface of the second annular sidewall (14) or causes the stop flange (61) to move away from the second annular sidewall (14) and to clear the second annular sidewall (14).

16. A display device as claimed in claim 13, characterised in that the second annular side wall (14) is provided with ventilation apertures (70).

17. A display device as claimed in claim 9, characterised in that the first annular side wall (12) comprises a sloping wall section (121), the display device comprising a plurality of interconnected boxes (10), the sloping wall sections (121) of adjacent boxes (10) forming drainage channels.

18. The display device according to claim 17, wherein a waterproof rubber strip (80) is provided between the adjacent cases (10).