An outdoor small-pitch curved splicing screen

Abstract

The utility model discloses an outdoor small-pitch arc splicing screen, wherein a third connecting column is arranged on a flexible grid plate, a third connecting hole is opened on the top of the third connecting column, a flexible PCB board is fixedly connected to the upper end of the flexible grid plate, LED lamps are arranged in a matrix with equal spacing on the flexible PCB board, a third through hole is arranged on the flexible PCB board, a flexible mask is arranged on the upper end of the flexible PCB board, a fourth through hole is arranged on the flexible mask, the third connecting column passes through the third through hole and is supported below the fourth through hole, and is connected to the third connecting hole by a screw passing through the fourth through hole. The utility model uses the flexible grid plate as an intermediate connecting piece to complete the assembly of the arc splicing screen, and the connecting holes opened on the top of the connecting column do not need to be tapped with internal threads, thereby solving the problem that when the spacing between LED lamps is small, the traditional metal connecting column needs to be miniaturized accordingly, but the metal connecting column is too small to tap the internal thread inside, that is, the problem that the metal connecting column cannot be assembled.

Description

Technical Field

[0001] The utility model relates to the technical field of LED display screens, in particular to an outdoor small-pitch arc-shaped spliced ​​screen. Background Art

[0002] As LED display screens are becoming more and more perfect, their applications are becoming more and more extensive. For the installation of outdoor LED display screens, it is often necessary to install display screens on two intersecting walls outdoors. The traditional splicing method is to install fixed display screens on both walls respectively and connect them by telecommunications. The connection point of the display screen is located at the positive corner of the wall to form a 90-degree right-angle structure, and the display effect is not good. Later, curved display screen modules for excessive connection of positive corners of walls appeared on the market, but the curved display screen modules are basically spliced ​​together by multiple short-side straight screen modules. The external connection spacing between the short-side straight screen modules is large, and the connecting edges are still angular structures. It is a quasi-arc structure spliced ​​with a step transition, and the display effect is slightly improved, but because it cannot achieve stepless splicing transition, the display effect is still not ideal.

[0003] Existing LED display screen modules are generally composed of a mounting base, an LED light board and a mask. The LED light board is fixed on the mounting base, and the mask is mounted on the LED light board by screws. If the mounting base, LED light board and mask are all made into an arc structure, the infinite splicing transition (smooth transition) of the LED display screen on the corner wall can be achieved. Because the mask needs to be mounted on the LED light board by screws, a connecting column structure needs to be set on the LED light board. If the LED light board is made into an arc structure, the connecting column needs to be fixed on the LED light board by patch welding, and the connecting column The axes intersect on the central axis of the arc-shaped LED light board, and the connecting columns can only be metal connecting columns, such as copper columns. The upper ends of the connecting columns need to be provided with internal threads. Because the connecting columns are provided on the arc-shaped LED light board, they can only be provided between LED lights. Therefore, when the spacing between the LED lights is very small, the diameter of the connecting columns must be adapted to be smaller. However, there is no way to carve internal threads on the connecting columns that are too small. That is, when the spacing between the LED lights on the LED light board is too small (such as the LED lights on the ultra-high-definition display), this arc-shaped connection structure cannot be realized. For this reason, we have launched an outdoor small-pitch arc-shaped splicing screen. Utility Model Content

[0004] In response to the shortcomings of the existing technology, the utility model provides an outdoor small-pitch curved splicing screen, which realizes the smooth installation transition of small-pitch curved screens for high-definition outdoor display screens, improves the overall display effect of outdoor display screens, etc.

[0005] To achieve the above objectives, the utility model is implemented through the following technical solutions: an outdoor small-pitch curved splicing screen, including a curved base, a flexible grid plate, a flexible PCB board and a flexible mask. The flexible grid plate is an integrally molded plastic part. The initial forms of the flexible grid plate, the flexible PCB board and the flexible mask are all straight. The flexible grid plate is fixedly connected to the curved base, the flexible grid plate is fixedly connected to the flexible PCB board, and the flexible PCB board is fixedly connected to the flexible mask. After assembly is completed, the flexible grid plate, the flexible PCB board and the flexible mask are all in an curved state, and the arc center axis of the flexible grid plate, the flexible PCB board and the flexible mask coincide with the center axis of the curved base.

[0006] Preferably, a first connecting column is provided on the arc-shaped base, a first connecting hole is provided on the top of the first connecting column, a first through hole and a second connecting column are also provided on the flexible grid plate, a second connecting hole is provided on the top of the second connecting column, the first connecting column is coaxial with the first through hole and has a one-to-one corresponding position, and is connected to the first connecting hole by a screw passing through the first through hole.

[0007] Preferably, the flexible PCB board is further provided with a second via hole, the second connecting column is coaxial with the second via hole and has a one-to-one position correspondence with the second via hole, and is connected to the second connecting hole by a screw passing through the second via hole.

[0008] Preferably, a third connecting column is provided on the flexible grid plate, a third connecting hole is provided on the top of the third connecting column, LED lights are arranged in a matrix with equal intervals on the flexible PCB board, a third through hole is provided on the flexible PCB board, and the flexible mask is provided with an LED lamp avoidance hole and a fourth through hole. The LED lamp is located in the LED lamp avoidance hole, and the third connecting column passes through the third through hole and is supported under the fourth through hole. The third connecting column is coaxial with the third through hole and the fourth through hole and has a one-to-one corresponding position, and is connected to the third connecting hole by a screw passing through the fourth through hole.

[0009] Preferably, the top of the arc-shaped base is provided with reinforcing ribs that are staggered horizontally and vertically, and the bottom of the flexible grid plate is provided with supporting blocks, which correspond to the upper and lower positions of the third connecting columns, and the height of the supporting blocks is the same as the height of the reinforcing ribs.

[0010] Preferably, the intervals between the LED lights form glue grooves, and glue is poured into the glue grooves to form a waterproof glue layer. During assembly, the top of the waterproof glue layer is not higher than the top of the third connecting column. The third connecting column is also provided with a supporting surface, which is located at the bottom of the third through hole and seals the bottom of the third through hole.

[0011] Preferably, both the arc-shaped base and the flexible grid plate are provided with power connection avoidance holes.

[0012] The utility model provides an outdoor small-pitch curved splicing screen, which has the following beneficial effects:

[0013] The utility model uses a flexible grid plate as an intermediate connecting piece to respectively realize the connection with the curved base, the flexible PCB board, and the flexible mask to complete the assembly of the curved splicing screen. Specifically, the flexible grid plate is an injection-molded one-piece structure. The flexible grid plate, the flexible PCB board, and the flexible mask are all in a straight plate shape in the initial state. The flexible grid plate is bent and connected to the first connecting hole of the first connecting column on the curved base by a screw through the first through hole on the flexible grid plate. At this time, the second connecting column and the third connecting column at the upper end of the flexible grid plate are divergent, and their axes both point to the central axis of the curved base. The flexible PCB board is bent and assembled to the upper end of the flexible grid plate. At this time, the third connecting column on the flexible grid plate passes through the third through hole on the flexible PCB board, and the second connecting column on the flexible grid plate is coaxial and one-to-one corresponding to the second through hole on the flexible PCB board. A screw is used to pass through the second through hole on the flexible PCB board to connect to the second connecting hole of the second connecting column on the flexible grid plate, and then glue is poured into the glue groove at the upper end of the flexible LED board to form a waterproof glue layer, because the supporting block at the bottom of the flexible grid plate It abuts against the upper surface of the curved base to provide support for the flexible grid plate. The flexible grid plate will not deform during the glue injection operation. The abutting surface of the third connecting column abuts against the bottom of the third through hole and blocks the third through hole. The third through hole will not leak glue during the glue injection operation. Finally, the flexible mask is bent and connected to the third connecting hole of the third connecting column on the flexible PCB board through the fourth through hole on the flexible mask using a screw. Since the flexible grid plate is initially in a straight plate shape, it can be integrally formed by injection molding, which is convenient for demolding and has a high processing progress. Moreover, the first connecting hole, the second connecting hole, and the third connecting hole do not need to be tapped with internal threads. It only needs to ensure that their inner diameters are slightly smaller than the outer diameters of the connecting screws, thereby reducing the product component processing steps and reducing product manufacturing costs. In addition, because the third connecting hole does not need to be tapped with internal threads, the problem of traditional connectors using metal connecting columns, which require tapping internal threads inside the metal connecting columns for assembly, but when the spacing between LED lamps is too narrow, the metal connecting columns also need to be reduced accordingly, and metal connecting columns that are too small cannot be tapped with internal threads inside them, that is, normal screw assembly connection cannot be achieved. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the overall structure of the utility model;

[0015] Figure 2 For this utility model Figure 1 Enlarged view of part A in the middle;

[0016] Figure 3 This is a schematic diagram of the arc-shaped base structure of the utility model;

[0017] Figure 4 This is a schematic diagram of the flexible grid plate structure in the utility model;

[0018] Figure 5For this utility model Figure 4 Enlarged view of middle part B;

[0019] Figure 6 This is a schematic diagram of the flexible PCB structure in the utility model;

[0020] Figure 7 For this utility model Figure 6 Enlarged view of middle C part;

[0021] Figure 8 This is a schematic diagram of the structure of the flexible mask in the utility model;

[0022] Figure 9 This is a schematic diagram of the assembly of the utility model;

[0023] Figure 10 This is a schematic diagram of the utility model in use.

[0024] In the picture:

[0025] 1. Arc-shaped base; 10. First connecting column; 100. First connecting hole; 11. Reinforcement rib;

[0026] 2. Flexible grid plate; 20. First via hole; 21. Second connecting post; 210. Second connecting hole; 22. Third connecting post; 220. Third connecting hole; 221. Abutting surface; 23. Abutting block;

[0027] 3. Flexible PCB board; 30. LED light; 31. Second via hole; 32. Third via hole; 33. Glue groove;

[0028] 4. Flexible mask; 40. LED light avoidance hole; 41. Fourth via hole;

[0029] 5. Power connection avoidance hole. DETAILED DESCRIPTION

[0030] In order to deepen the understanding of the present invention, the present invention will be further described in detail below in conjunction with embodiments. The embodiments are only used to explain the present invention and do not constitute a limitation on the scope of protection of the present invention.

[0031] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly attached to the other element or there may be an intermediate element. When an element is referred to as being "connected to" another element, it may be directly connected to the other element or there may be an intermediate element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only.

[0032] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which this invention pertains. The terms used in this specification of the present invention are for the purpose of describing specific embodiments only and are not intended to limit the present invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0033] like Figure 1-8 As shown, the utility model provides a technical solution: an outdoor small-pitch curved splicing screen, comprising a curved base 1, a flexible grid plate 2, a flexible PCB board 3 and a flexible mask 4, the curved base 1 and the flexible grid plate 2 are all one-piece molded plastic parts, the initial forms of the flexible grid plate 2, the flexible PCB board 3 and the flexible mask 4 are all straight-board states, the flexible grid plate 2 is fixedly connected to the curved base 1, the flexible PCB board 3 is fixedly connected to the flexible grid plate 2, and the flexible mask 4 is fixedly connected to the flexible PCB board 3. After assembly is completed, the flexible grid plate 2, the flexible PCB board 3 and the flexible mask 4 are all in an curved state, and the arc center axes of the flexible grid plate 2, the flexible PCB board 3 and the flexible mask 4 coincide with the center axis of the curved base 1.

[0034] Specifically, a first connecting column 10 is provided on the arc-shaped base 1, and a first connecting hole 100 is provided on the top of the first connecting column 10. The flexible grid plate 2 is also provided with a first through hole 20 and a second connecting column 21, and a second connecting hole 210 is provided on the top of the second connecting column 21. The first connecting column 10 is coaxial with the first through hole 20 and has a one-to-one corresponding position, and is connected to the first connecting hole 100 by passing a screw through the first through hole 20.

[0035] Specifically, the flexible PCB board 3 is further provided with a second via hole 31 , the second connecting column 21 is coaxial with the second via hole 31 and has a one-to-one position correspondence, and is connected to the second connecting hole 210 by passing through the second via hole 31 with a screw.

[0036] Specifically, a third connecting column 22 is provided on the flexible grid plate 2, and a third connecting hole 220 is opened on the top of the third connecting column 22. LED lights 30 are arranged in a matrix with equal intervals on the flexible PCB board 3. A third through hole 32 is provided on the flexible PCB board 3. The flexible mask 4 is provided with an LED lamp avoidance hole 40 and a fourth through hole 41. The LED lamp 30 is located in the LED lamp avoidance hole 40. The third connecting column 22 passes through the third through hole 32 and is supported under the fourth through hole 41. The third connecting column 22 is coaxial with the third through hole 32 and the fourth through hole 41 and corresponds one to one in position, and is connected to the third connecting hole 220 by a screw passing through the fourth through hole 41.

[0037] The flexible grid panel 2 is an integrally molded plastic part, and its initial state is a straight board state. The utility model uses the flexible grid panel 2 as an intermediate connecting part to complete the assembly of the curved splicing screen. Specifically, the curved base 1 is fixedly connected to the bottom of the flexible grid panel 2 by screws, and the flexible PCB board 3 and the flexible mask 4 are fixed to the top of the flexible grid panel 2 in sequence by screws. The connecting holes opened on the top of the connecting column do not need to be tapped with internal threads, which solves the problem that when the spacing between LED lamps is small, the traditional metal connecting column is correspondingly miniaturized, but the metal connecting column is too small to be tapped with internal threads inside it, that is, the problem that assembly cannot be achieved using the metal connecting column.

[0038] Furthermore, the top of the arc-shaped base 1 is provided with horizontal and vertical staggered reinforcing ribs 11, and the bottom of the flexible grid plate 2 is distributed with a supporting block 23. The supporting block 23 corresponds to the upper and lower positions of the third connecting column 22. The height of the supporting block 23 is the same as the height of the reinforcing rib 11, that is, the bottom of the supporting block 23 is connected to the upper surface of the top of the arc-shaped base 1. The supporting block 23 supports the bottom of the flexible grid plate 2 to prevent the flexible grid plate 2 from being deformed when subjected to external force.

[0039] Furthermore, the intervals between the LED lights 30 form glue grooves 33, and glue is poured into the glue grooves 33 to form a waterproof glue layer. During assembly, the top of the waterproof glue layer is no higher than the top of the third connecting column 22. The third connecting column 22 is also provided with a supporting surface 221, which is located at the bottom of the third through hole 32 and seals the bottom of the third through hole 32.

[0040] During the process of glue filling or screw fixing, there will be a downward force on the flexible PCB board 3. The flexible PCB board 3 is supported by the supporting surface 221 on the flexible grid plate 2. Therefore, correspondingly, a force will also appear on the flexible grid plate 2, because the supporting block 23 supports the bottom of the flexible grid plate 2 to prevent the flexible grid plate 2 from deforming or sinking under the action of external force. During the glue filling process, it can be ensured that the supporting surface 221 is not separated from the bottom of the third through hole 32, and the bottom of the third through hole 32 can be well sealed, and glue leakage will not occur. During the screw fixing process, the flexible grid plate 2 will not sink, and is supported by the supporting block 23, which facilitates the tightening operation of the screw.

[0041] Furthermore, in order to facilitate power connection, power connection avoidance holes 5 are provided on the arc base 1 and the flexible grid plate 2 to facilitate power connection to the flexible PCB board 3.

[0042] like Figure 9As shown, when assembling the present invention, first fix the straight-plate flexible grid plate 2 on the arc-shaped base 1 by screws, so that the flexible grid plate 2 is in an arc-shaped state. At this time, the axial directions of the second connecting column 21 and the third connecting column 22 on the flexible grid plate 2 both point to the central axis of the arc-shaped base 1. Then, bend the flexible PCB board 3 and fix it to the flexible grid plate 2 by screws. Glue is poured into the glue groove 33 on the flexible PCB board 3 to form a waterproof glue layer. Finally, bend the flexible mask 4 and assemble it on the third connecting column 22 by screws. At this time, the LED lamp 30 passes through the LED avoidance hole 40 and is exposed to the outside.

[0043] like Figure 10 As shown, the curved splicing screen of the present invention can be well spliced ​​with the LED display screen on the corner wall for small pitch and infinite connection, and the overall display screen has a good display effect.

[0044] The above shows and describes the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and improvements are intended to fall within the scope of the present invention. The scope of protection claimed in this invention is defined by the appended claims and their equivalents.

Claims

1. An outdoor small-pitch curved splicing screen, characterized in that: The invention comprises an arc-shaped base (1), a flexible grid plate (2), a flexible PCB (3) and a flexible mask (4); the flexible grid plate (2) is an integrally formed plastic part; the initial forms of the flexible grid plate (2), the flexible PCB (3) and the flexible mask (4) are all in a straight plate state; the flexible grid plate (2) is fixedly connected inside the arc-shaped base (1); the flexible PCB (3) is fixedly connected on the flexible grid plate (2); and the flexible mask (4) is fixedly connected on the flexible PCB (3); after assembly, the flexible grid plate (2), the flexible PCB (3) and the flexible mask (4) are all in an arc-shaped state, and the arc-shaped central axes of the flexible grid plate (2), the flexible PCB (3) and the flexible mask (4) coincide with the central axis of the arc-shaped base (1).

2. The outdoor small-pitch curved splicing screen according to claim 1 is characterized by: A first connecting column (10) is provided on the arc-shaped base (1), a first connecting hole (100) is provided on the top of the first connecting column (10), a first through hole (20) and a second connecting column (21) are also provided on the flexible grid plate (2), a second connecting column (21) is provided on the top of the second connecting column (21), the first connecting column (10) and the first through hole (20) are coaxial and have one-to-one corresponding positions, and are connected to the first connecting hole (100) by passing a screw through the first through hole (20).

3. The outdoor small-pitch curved splicing screen according to claim 1 is characterized by: The flexible PCB board (3) is further provided with a second via hole (31), the second connecting column (21) is coaxial with the second via hole (31) and has a one-to-one corresponding position, and is connected to the second connecting hole (210) by passing a screw through the second via hole (31).

4. The outdoor small-pitch curved splicing screen according to claim 1 is characterized by: The flexible grid plate (2) is provided with a third connecting column (22), a third connecting hole (220) is opened at the top of the third connecting column (22), LED lamps (30) are arranged in a matrix at equal intervals on the flexible PCB board (3), a third through hole (32) is provided on the flexible PCB board (3), the flexible mask (4) is provided with an LED lamp avoidance hole (40) and a fourth through hole (41), the LED lamp (30) is located in the LED lamp avoidance hole (40), the third connecting column (22) passes through the third through hole (32) and abuts against the bottom of the fourth through hole (41), the third connecting column (22) is coaxial with the third through hole (32) and the fourth through hole (41) and has a one-to-one position correspondence, and is connected to the third connecting hole (220) by passing a screw through the fourth through hole (41).

5. The outdoor small-pitch curved splicing screen according to claim 4 is characterized by: The top of the arc-shaped base (1) is provided with reinforcing ribs (11) arranged in a crisscross pattern. The bottom of the flexible grid plate (2) is provided with a supporting block (23). The supporting block (23) corresponds to the third connecting column (22) in upper and lower positions. The height of the supporting block (23) is the same as the height of the reinforcing rib (11).

6. The outdoor small-pitch curved splicing screen according to claim 4, characterized in that: The intervals between the LED lamps (30) form a glue groove (33), and the glue groove (33) is filled with glue to form a waterproof glue layer. During assembly, the top of the waterproof glue layer is not higher than the top of the third connecting column (22). The third connecting column (22) is also provided with a supporting surface (221), and the supporting surface (221) is located at the bottom of the third through hole (32) and blocks the bottom of the third through hole (32).

7. The outdoor small-pitch curved splicing screen according to claim 1 is characterized by: Power connection avoidance holes (5) are provided on the arc-shaped base (1) and the flexible grid plate (2).

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