Display screen

Abstract

The utility model discloses a display screen, and belongs to the technical field of display screens. The display screen comprises a bottom shell, a waterproof sealing piece, a PCB lamp panel and a cover plate, and a mounting hole is formed in the bottom shell in a penetrating mode; the waterproof sealing piece comprises an annular sleeve, a first annular plane and a second annular plane, the first annular plane and the second annular plane are parallel and arranged at the two ends of the annular sleeve in a spaced mode, a first rib is arranged at the end, away from the annular sleeve, of the first annular plane in a protruding mode, and a second rib is arranged at the end, away from the annular sleeve, of the second annular plane in a protruding mode. The annular sleeve is arranged in the mounting hole in a penetrating manner; the PCB lamp panel is connected with the front face of the bottom shell, a plug wire seat of the PCB lamp panel is located in the annular sleeve, and the first annular plane and the first ribs abut against the plate face of the PCB lamp panel. The cover plate is connected with the back face of the bottom shell, and the second annular plane and the second ribs abut against the cover plate. According to the LED display screen, the sealing performance is improved, rainwater or water vapor is prevented from permeating into the plug wire seat of the PCB lamp panel, and normal work of the LED display screen can be guaranteed.

Description

TECHNICAL FIELD

[0001] The utility model relates to display screen technical field especially relates to a display screen. BACKGROUND

[0002] The working principle of LED display screen is mainly based on the electroluminescence principle of light emitting diode. When the light emitting diode is in the forward working state (that is, a forward voltage is added to both ends), the current flows from the anode to the cathode of the LED, and the semiconductor crystal will emit light of different colors from ultraviolet to infrared, and the intensity of light is related to the current. By controlling the on-off of these light emitting diodes, various images and texts can be formed. LED display screen is widely used in various fields, such as stations, wharfs, airports, shopping malls, hospitals, hotels, banks, securities markets and other public places for information display, as well as advertising screens, stage background screens, etc. LED display screen is formed by assembling multiple boxes or unit boards, which are generally installed on the wall, with the back against the wall and the front facing the audience. Each box is equipped with several LED display modules.

[0003] However, the LED display screen in the prior art is prone to water seepage at the wire socket of the PCB lamp panel in a humid environment or outdoor rainy weather due to poor sealing, which seriously affects the normal operation of the LED display screen.

[0004] Therefore, there is an urgent need to provide a display screen to solve the above problems. UTILITY MODEL CONTENT

[0005] The utility model aims at providing a display screen to improve the sealing property and prevent rainwater from seeping into the wire socket of the PCB lamp panel, which helps to ensure the normal operation of the LED display screen.

[0006] To achieve the above-mentioned purpose, the following technical solutions are provided:

[0007] The display screen comprises:

[0008] A bottom shell is provided with a mounting hole;

[0009] A waterproof sealing element comprises an annular sleeve, a first annular plane and a second annular plane, the first annular plane and the second annular plane are parallel and spaced apart at both ends of the annular sleeve, the first annular plane is provided with a first rib at one end away from the annular sleeve, the second annular plane is provided with a second rib at one end away from the annular sleeve, and the annular sleeve is arranged in the mounting hole;

[0010] A PCB lamp panel is connected to the front surface of the bottom shell, the wire socket of the PCB lamp panel is located in the annular sleeve, and the first annular plane and the first rib are in abutment with the panel surface of the PCB lamp panel.

[0011] A cover plate connected to the back of the bottom shell, the second annular plane and the second rib are in abutment with the cover plate.

[0012] As an alternative to the display screen, the inner wall of the annular sleeve is provided with a third rib, and the cover plate is provided with a raised surrounding edge near one end of the PCB lamp plate, the raised surrounding edge is inserted into the annular sleeve and abuts with the third rib.

[0013] As an alternative to the display screen, the third rib is provided with a plurality of, and / or the waterproof sealing member is made of rubber material.

[0014] As an alternative to the display screen, a limiting annular groove is provided on the back of the bottom shell along the periphery of the mounting hole, and the waterproof sealing member further comprises:

[0015] An annular bending part connected to the second annular plane, the annular bending part is embedded in the limiting annular groove.

[0016] As an alternative to the display screen, a plurality of first limiting columns are circumferentially spaced along the periphery of the mounting hole on the back of the bottom shell, a plurality of first insertion holes are provided through the second annular plane, and the first limiting columns are inserted into the first insertion holes.

[0017] As an alternative to the display screen, a plurality of second limiting columns are spaced along the periphery of the mounting hole on the front of the bottom shell, a plurality of second insertion holes are provided through the first annular plane, and the second limiting columns are inserted into the second insertion holes.

[0018] As an alternative to the display screen, the cross section of the first limiting column is square; and / or the cross section of the second limiting column is circular.

[0019] As an alternative to the display screen, a plurality of mounting bosses are spaced along the periphery of the mounting hole on the front of the bottom shell, a plurality of third insertion holes are provided through the first annular plane, and the mounting bosses are inserted into the third insertion holes.

[0020] As an alternative to the display screen, an installation gap is formed between the PCB lamp plate and the bottom shell, a communication groove is provided on the first annular plane, one side of the communication groove is in communication with the annular sleeve, and the other side of the communication groove is in communication with the installation gap.

[0021] As an alternative to the display screen, connecting ears are provided on both sides of the cover plate, a first connecting hole is provided through the connecting ear, two limiting grooves are provided on the back of the bottom shell, a second connecting hole is provided on the groove bottom of the limiting groove, and the display screen further comprises:

[0022] A fastener is inserted into the first connecting hole and connected with the second connecting hole.

[0023] Compared with the prior art, the display screen has the beneficial effects that:

[0024] The display screen has the mounting hole arranged on the bottom shell, the annular sleeve of the waterproof sealing member is mounted into the mounting hole, the PCB lamp plate is assembled on the front surface of the bottom shell, and the cover plate is assembled on the back surface of the bottom shell, the first annular plane and the first rib of the waterproof sealing member are in close abutment with the plate surface of the PCB lamp plate on one hand, and the second annular plane and the second rib are in close abutment with the cover plate on the other hand, different surface multiple waterproof can be realized, the sealing performance of the display screen is improved, rainwater or water vapor is prevented from penetrating into the wire socket of the PCB lamp plate, the normal work of the LED display screen is helped to be ensured, and the display screen is safer and more reliable to use. BRIEF DESCRIPTION OF DRAWINGS

[0025] In order to more clearly illustrate the technical scheme in the embodiment of the utility model, the drawings needed to be used in the embodiment of the utility model will be briefly introduced as follows. Obviously, the drawings in the following description are only some embodiments of the utility model, and other drawings can be obtained according to the content of the embodiment of the utility model and these drawings by those skilled in the art without creating labor.

[0026] Figure 1 It is the assembly schematic view of the display screen in the embodiment of the utility model;

[0027] Figure 2 It is the assembly schematic view of the display screen in the embodiment of the utility model; Figure 1 It is the sectional view of A-A direction in the embodiment of the utility model;

[0028] Figure 3 It is the assembly schematic view of the display screen in the embodiment of the utility model; Figure 2 It is the enlarged view of B in the embodiment of the utility model;

[0029] Figure 4 It is the assembly schematic view of the display screen in the embodiment of the utility model;

[0030] Figure 5 It is the assembly schematic view of the display screen in the embodiment of the utility model; Figure 4 It is the enlarged view of C in the embodiment of the utility model;

[0031] Figure 6 It is the structure schematic view of the bottom shell in the embodiment of the utility model;

[0032] Figure 7 It is the structure schematic view of the bottom shell in the embodiment of the utility model; Figure 6 It is the enlarged view of D in the embodiment of the utility model;

[0033] Figure 8 It is the sectional view of the waterproof sealing member in the embodiment of the utility model;

[0034] Figure 9 It is the structure schematic view of the waterproof sealing piece in the first visual angle of the embodiment of the utility model;

[0035] Figure 10 It is the structure schematic view of the waterproof sealing piece in the second visual angle of the embodiment of the utility model;

[0036] Figure 11 It is the structure schematic view of the cover plate in the embodiment of the utility model.

[0037] Reference signs:

[0038] 1, bottom shell; 2, waterproof sealing piece; 3, PCB lamp plate; 31, plug seat; 4, cover plate; 41, convex surrounding edge; 42, connecting lug; 421, first connecting hole; 5, fastener;

[0039] 11, mounting hole; 12, limiting annular groove; 13, first limiting column; 14, second limiting column; 15, mounting boss; 16, limiting groove; 161, second connecting hole;

[0040] 21, annular sleeve; 211, third rib; 22, first annular plane; 221, first rib; 222, second jack; 223, third jack; 224, communication groove; 23, second annular plane; 231, second rib; 232, first jack; 24, annular bending part. DETAILED DESCRIPTION

[0041] In order to make the purpose, technical scheme and advantages of the embodiment of the utility model more clear, the technical scheme in the embodiment of the utility model will be described clearly and completely below in combination with the drawings in the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiments of the utility model, rather than all the embodiments. The components of the embodiment of the utility model described and shown in the drawings can be arranged and designed in various different configurations.

[0042] In the description of the utility model, it should be pointed out that the orientation or position relationship indicated by the terms "up", "down", "left", "right", "vertical", "horizontal", "inner", "outer" and the like is based on the orientation or position relationship shown in the drawings, or the orientation or position relationship commonly placed when the utility model product is used, and is only for the convenience of describing the utility model and simplifying the description, and therefore cannot be understood as indicating or implying that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the utility model. In addition, the terms "first", "second", "third" and the like are only used for differentiation in description, and cannot be understood as indicating or implying relative importance. In the description of the utility model, unless otherwise specified, the meaning of "multiple" is two or more.

[0043] In the description of the utility model, still need to explain, unless another explicit provision and limitation, term '' set '' '' connection '' should do broad sense understanding, for example, can be fixed connection, also can be detachable connection, or integrally connected, can be mechanical connection, also can be electrical connection. For ordinary skilled in the art, can understand the specific meaning of the above terms in the utility model according to specific circumstances.

[0044] The embodiments of the utility model are described in detail below, and the examples of the embodiments are shown in the drawings, wherein the same or similar reference signs represent the same or similar elements or elements with the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary, only for explaining the utility model, and cannot be understood as limiting the utility model.

[0045] In order to improve the sealing, avoid rainwater or water vapor from penetrating into the plug-in socket of the PCB lamp plate, help to ensure the normal work of the LED display screen, the embodiment provides a display screen, which is described in detail below Figures 1 to 11 The specific content of the embodiment is described in detail.

[0046] The display screen in the embodiment includes a bottom shell 1, a waterproof sealing element 2, a PCB lamp plate 3 and a cover plate 4. The bottom shell 1 has a mounting hole 11. The waterproof sealing element 2 includes an annular sleeve 21, a first annular plane 22 and a second annular plane 23. The first annular plane 22 and the second annular plane 23 are parallel and spaced apart at both ends of the annular sleeve 21. The first annular plane 22 has a first rib 221 protruding from one end away from the annular sleeve 21. The second annular plane 23 has a second rib 231 protruding from one end away from the annular sleeve 21. The annular sleeve 21 is arranged in the mounting hole 11. The PCB lamp plate 3 is connected to the front surface of the bottom shell 1. The plug-in socket 31 of the PCB lamp plate 3 is located in the annular sleeve 21. The first annular plane 22 and the first rib 221 are in abutment with the surface of the PCB lamp plate 3. The cover plate 4 is connected to the back surface of the bottom shell 1. The second annular plane 23 and the second rib 231 are in abutment with the cover plate 4.

[0047] In short, the display screen provided by the utility model has the mounting hole 11 on the bottom shell 1, and the annular sleeve 21 of the waterproof sealing element 2 is installed in the mounting hole 11. The PCB lamp plate 3 is assembled on the front surface of the bottom shell 1, and the cover plate 4 is assembled on the back surface of the bottom shell 1. On the one hand, the first annular plane 22 and the first rib 221 of the waterproof sealing element 2 are in close extrusion with the surface of the PCB lamp plate 3. On the other hand, the second annular plane 23 and the second rib 231 are in close extrusion with the cover plate 4. Different surfaces can be waterproofed, the sealing of the display screen is improved, rainwater or water vapor is prevented from penetrating into the plug-in socket 31 of the PCB lamp plate 3, which helps to ensure the normal work of the LED display screen, and the use is safer and more reliable.

[0048] Further, the third rib 211 is arranged on the inner wall of the annular sleeve 21, and the protruding surrounding edge 41 of the cover plate 4 is arranged close to the PCB lamp plate 3, the protruding surrounding edge 41 is inserted into the annular sleeve 21 and abuts against the third rib 211. By tightly extruding the side surface of the protruding surrounding edge 41 of the cover plate 4 and the third rib 211 in the annular sleeve 21, the sealing performance of the display screen is further improved.

[0049] Exemplarily, the third rib 211 is provided in plurality, and / or the waterproof sealing element 2 is made of rubber material. The plurality of third ribs 211 abut against the protruding surrounding edge 41 of the cover plate 4 at the same time, so as to achieve the effect of multiple sealing.

[0050] Exemplarily, the limiting annular groove 12 is arranged on the back surface of the bottom shell 1 along the periphery of the mounting hole 11, and the waterproof sealing element 2 further comprises the annular bending portion 24, the annular bending portion 24 is connected with the second annular plane 23, and the annular bending portion 24 is embedded in the limiting annular groove 12. By extruding the side surface of the annular bending portion 24 and the limiting annular groove 12, the connection sealing performance of the waterproof sealing element 2 and the bottom shell 1 is further improved. Optionally, the first annular plane 22, the annular sleeve 21, the second annular plane 23 and the annular bending portion 24 are integrally formed.

[0051] Further, the first limiting column 13 is arranged on the back surface of the bottom shell 1 along the periphery of the mounting hole 11 in a circumferential interval, and the first insertion hole 232 is arranged through the second annular plane 23 in a plurality, and the first limiting column 13 is inserted into the first insertion hole 232. By adding the first limiting column 13 and the first insertion hole 232, the connection stability of the second annular plane 23 and the bottom shell 1 is improved.

[0052] Further, the second limiting column 14 is arranged on the front surface of the bottom shell 1 along the periphery of the mounting hole 11 in an interval, and the second insertion hole 222 is arranged through the first annular plane 22 in a plurality, and the second limiting column 14 is inserted into the second insertion hole 222. By adding the second limiting column 14 and the second insertion hole 222, the connection stability of the first annular plane 22 and the bottom shell 1 is improved.

[0053] Optionally, the cross section of the first limiting column 13 is square; and / or the cross section of the second limiting column 14 is circular. By cooperating the waterproof sealing element 2 with the first limiting column 13 and the second limiting column 14, the waterproof sealing element 2 can be prevented from falling off the bottom shell 1.

[0054] Further, a plurality of mounting bosses 15 are arranged on the front surface of the bottom shell 1 at intervals along the periphery of the mounting hole 11, a plurality of third insertion holes 223 are arranged through the first annular plane 22, and the mounting bosses 15 are inserted into the third insertion holes 223. By adding the mounting bosses 15 and the third insertion holes 223, the installation position of the waterproof sealing member 2 on the bottom shell 1 can be further limited, and the assembly precision is improved. The mounting bosses 15 of the embodiment are provided with protruding columnar bodies which can be inserted into corresponding holes in the PCB lamp plate 3, for limiting the installation position of the PCB lamp plate 3.

[0055] Further, an installation gap is formed between the PCB lamp plate 3 and the bottom shell 1, the first annular plane 22 is provided with a communication groove 224, one side of the communication groove 224 is in communication with the annular sleeve 21, and the other side of the communication groove 224 is in communication with the installation gap, so that water vapor is not easily generated in the module.

[0056] Further, the two sides of the cover plate 4 are provided with connecting ears 42, the connecting ears 42 are provided with first connecting holes 421, two limiting grooves 16 are arranged on the back surface of the bottom shell 1, second connecting holes 161 are arranged in the groove bottoms of the limiting grooves 16, and the display screen further comprises fasteners 5 which are inserted into the first connecting holes 421 and connected with the second connecting holes 161. The fasteners 5 can be, but are not limited to, bolts, screws and the like, and are not limited here. Optionally, reinforcing ribs are arranged on the cover plate 4 and the bottom shell 1, for improving the structural strength.

[0057] It should be noted that the above are only the preferred embodiments of the present application and the technical principles applied. Those skilled in the art will understand that the present application is not limited to the specific embodiments described herein, and those skilled in the art can make various obvious changes, re-adjustments and substitutions without departing from the scope of the present application. Therefore, although the present application has been described in detail through the above embodiments, the present application is not limited to the above embodiments, and can include more other equivalent embodiments without departing from the concept of the present application, and the scope of the present application is determined by the scope of the appended claims.

Claims

1. A display screen, characterized in that The utility model relates to a waterproof sealing device for a PCB lamp plate, comprising: a bottom shell (1) with a mounting hole (11) through the bottom shell (1); a waterproof sealing device (2) comprising an annular sleeve (21), a first annular plane (22) and a second annular plane (23), the first annular plane (22) and the second annular plane (23) being parallel and spaced apart at both ends of the annular sleeve (21), the first annular plane (22) having a first rib (221) protruding from one end of the annular sleeve (21), the second annular plane (23) having a second rib (231) protruding from one end of the annular sleeve (21), the annular sleeve (21) being arranged in the mounting hole (11); a PCB lamp plate (3) connected to the front surface of the bottom shell (1), the plug seat (31) of the PCB lamp plate (3) being located in the annular sleeve (21), the first annular plane (22) and the first rib (221) both abutting against the surface of the PCB lamp plate (3); a cover plate (4) connected to the back surface of the bottom shell (1), the second annular plane (23) and the second rib (231) both abutting against the cover plate (4).

2. The display screen of claim 1, wherein, The inner wall surface of the annular sleeve (21) has a third rib (211) protruding therefrom, one end of the cover plate (4) near the PCB lamp plate (3) is provided with a raised surrounding edge (41), the raised surrounding edge (41) is inserted into the annular sleeve (21) and abuts against the third rib (211).

3. The display screen of claim 2, wherein, The third rib (211) is provided in multiple, and / or the waterproof sealing device (2) is made of rubber material.

4. The display screen of claim 2, wherein, A limiting annular groove (12) is arranged on the back surface of the bottom shell (1) along the periphery of the mounting hole (11), and the waterproof sealing device (2) further comprises: an annular bending part (24) connected to the second annular plane (23), the annular bending part (24) being embedded in the limiting annular groove (12).

5. The display screen of claim 2, wherein, A plurality of first limiting columns (13) are circumferentially and spaced apart on the back surface of the bottom shell (1) along the periphery of the mounting hole (11), and a plurality of first insertion holes (232) are arranged through the second annular plane (23), the first limiting columns (13) being inserted into the first insertion holes (232).

6. The display screen of claim 5, wherein, A plurality of second limiting columns (14) are spaced apart on the front surface of the bottom shell (1) along the periphery of the mounting hole (11), and a plurality of second insertion holes (222) are arranged through the first annular plane (22), the second limiting columns (14) being inserted into the second insertion holes (222).

7. The display screen of claim 6, wherein, The cross section of the first limiting column (13) is square; and / or the cross section of the second limiting column (14) is circular.

8. The display screen of claim 2, wherein, A plurality of mounting bosses (15) are spaced apart on the front surface of the bottom shell (1) along the periphery of the mounting hole (11), and a plurality of third insertion holes (223) are arranged through the first annular plane (22), the mounting bosses (15) being inserted into the third insertion holes (223).

9. The display screen of claim 2, wherein, The mounting gap is formed between the PCB lamp panel (3) and the bottom shell (1), and the first annular plane (22) is provided with a communication groove (224) in communication with the annular sleeve (21) on one side and the mounting gap on the other side.

10. A display screen according to any one of claims 1 to 9, characterised in that, Both sides of the cover plate (4) are provided with connecting ears (42), and the connecting ears (42) are provided with first connecting holes (421) penetratingly formed. The back of the bottom shell (1) is provided with two limiting grooves (16), and the groove bottoms of the limiting grooves (16) are provided with second connecting holes (161). The display screen further comprises: The fastener (5) is arranged in the first connecting hole (421) and connected with the second connecting hole (161).

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