WO2020258770A1

WO2020258770A1 - Led display module and led display screen

Info

Publication number: WO2020258770A1
Application number: PCT/CN2019/126395
Authority: WO
Inventors: 贺金锋; 康鹏飞
Original assignee: 深圳市洲明科技股份有限公司
Priority date: 2019-06-28
Filing date: 2019-12-18
Publication date: 2020-12-30
Also published as: CN209843142U

Abstract

Disclosed are an LED display module and an LED display screen, relating to the technical field of LED display screens. The LED display module comprises a module bottom shell (100), a module PCB (200), and a plurality of LED lamp beads (300) arranged on one side, away from the module bottom shell (100), of the module PCB (200), wherein the module bottom shell (100) is provided with a mounting hole position (110) for fastening and connecting the module PCB (200), and the mounting hole position (110) comprises a mounting hole (111) and an annular hollow structure arranged around the mounting hole (111). According to the technical solution, the problem whereby a copper column falls off due to the fact that the mounting hole position (110) in the module bottom shell is not aligned with the copper column on the module PCB (200) can be effectively prevented, such that the service life of a product is prolonged, and the frequency and cost of post-maintenance are reduced.

Description

LED display module and LED display

Technical field

The invention relates to the technical field of LED display screens, in particular to an LED display module and an LED display screen.

Background technique

Most of the existing LED display bottom shells use screws to connect and fix the module. In this way, if the mounting hole of the module bottom shell and the copper pillar welded on the module PCB board appear axial Improper alignment (the main reasons for the incorrect alignment of the two are: 1. Because there is a certain tolerance between the mounting holes of the module bottom shell and the module PCB board itself, there is a certain amount of copper pillar welding process on the module PCB board. The angle of the module is inclined, all these errors may cause obvious misalignment; 2. When the module bottom shell expands and contracts with heat, the mounting hole position of the module bottom shell will vary with the size of the module bottom shell. Due to the large thermal expansion coefficient difference between the module PCB board and the module bottom shell, the mounting hole of the module bottom shell and the copper pillar welded on the module PCB board will produce a certain displacement. Displacement, resulting in obvious misalignment), a certain stress will be generated between the two. When this stress exceeds the critical value, it will cause the copper pillar welding part of the relatively low-strength module PCB board to fail, making the mold The copper pillars on the PCB board of the group fall off, which causes the LED display to be unable to be effectively fixed on the cabinet, which seriously affects the display effect.

technical problem

The technical problem to be solved by the present invention is to provide an LED display module and an LED display screen, aiming to solve the problem that the existing LED display module is prone to appear due to the mounting holes on the module bottom shell and the copper pillars on the module PCB board. The technical problem of copper pillars falling off caused by incorrect alignment.

Technical solutions

In order to solve the above technical problems, the present invention provides an LED display module, which includes a module bottom shell, a module PCB board, and a plurality of LED lamp beads arranged on the side of the module PCB board away from the module bottom shell. The module bottom shell is provided with mounting holes for fastening and connecting the module PCB board, and the mounting holes include mounting holes and an annular hollow structure arranged around the mounting holes.

Optionally, the mounting hole has a round hole structure.

Optionally, the mounting hole position further includes a plurality of first arc-shaped holes arranged around the mounting hole, and a plurality of the first arc-shaped holes are evenly spaced along the same circumference to pass through the plurality of first arcs. The shaped hole forms the annular hollow structure.

Optionally, the arc lengths corresponding to each of the first arc-shaped holes are equal.

Optionally, the mounting hole position further includes a plurality of second arc-shaped holes arranged around the mounting hole, and a plurality of the second arc-shaped holes are evenly distributed along the same circumference; each of the second arcs The radius of the arc corresponding to the hole is greater than the radius of the arc corresponding to each of the first arc-shaped holes, so that the annular hollow structure is formed by the plurality of first arc-shaped holes and the plurality of second arc-shaped holes.

Optionally, a plurality of the first arc-shaped holes and a plurality of the second arc-shaped holes are staggered along the radial direction of the mounting hole.

Optionally, the mounting holes include four of the first arc-shaped holes and four of the second arc-shaped holes to pass through the four first arc-shaped holes and the four second arc-shaped holes The holes jointly form the annular hollow structure.

Optionally, a copper pillar is fixed on the module PCB board, and an end of the copper pillar away from the module PCB is provided with a connecting hole, and the connecting piece is connected to the copper pillar after passing through the mounting hole. The connecting holes are mated and connected, so that the module PCB board and the module bottom case are firmly connected.

Optionally, a receiving groove is provided on one side of the mounting hole where the mounting hole is connected to the copper pillar, so as to correspondingly receive an end of the copper pillar away from the module PCB board.

In addition, in order to solve the above technical problems, the present invention also provides an LED display screen. The LED display screen includes a plurality of the above-mentioned LED display modules, and the plurality of the LED display modules are regularly distributed in a matrix.

Beneficial effect

In the LED display module and the LED display provided by the present invention, the module bottom shell of the LED display module is provided with mounting holes for fastening and connecting the PCB board of the module, and the mounting holes include mounting holes and surrounding mounting holes Set ring hollow structure. In this way, because the ring-shaped hollow structure has 360-degree flexibility, when it is set around the mounting hole, it can respond to external forces or dimensional deformation from any direction through its own deformation, adapt to a variety of complex environments, and limit the possible stress to Within a certain range, ensure that the copper pillars will not fall off, thereby ensuring a good display effect of the LED display. It can be seen that this technical solution can effectively avoid the problem of copper pillars falling off due to the incorrect alignment of the mounting holes on the module bottom shell with the copper pillars on the module PCB board, thereby increasing product life and reducing subsequent maintenance Frequency and cost.

Description of the drawings

In order to explain the embodiments of the present invention or the technical solutions in the prior art more clearly, the following will briefly introduce the drawings that need to be used in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only These are some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative labor.

FIG. 1 is a schematic diagram of the split structure of a preferred embodiment of the LED display module of the present invention.

Fig. 2 is a partial enlarged schematic diagram of a connection of the LED display module shown in Fig. 1.

Embodiments of the invention

The specific embodiments of the present invention will be further described below in conjunction with the drawings. It should be noted here that the description of these embodiments is used to help understand the present invention, but does not constitute a limitation to the present invention. In addition, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other. It should be noted that when an element is expressed as being "fixed to" another element, it can be directly on the other element, or there can be one or more elements in between. When an element is expressed as "snapling" to another element, it can be directly snapped to the other element, or there may be one or more intermediate elements in between. Used in this manual The terms "upper", "lower", "left", "right", "front", "rear" and similar expressions are for illustrative purposes only.

As shown in Figures 1 and 2, this embodiment provides an LED display screen. The LED display screen includes a number of LED display modules 1 regularly distributed in a matrix. The LED display module 1 includes a module bottom case 100 and a module The PCB board 200 and a number of LED lamp beads 300 arranged on the side of the module PCB board 200 away from the module bottom shell 100 are provided with mounting holes 110 for fastening and connecting the module PCB board 200, and The mounting hole 110 includes a mounting hole 111 and an annular hollow structure arranged around the mounting hole 111.

In this embodiment, as shown in FIG. 2, the mounting hole 111 preferably adopts a round hole structure. The mounting hole position 110 also includes a plurality of first arc-shaped holes 112 arranged around the mounting hole 111, and the plurality of first arc-shaped holes 112 are evenly distributed along the same circumference at equal intervals. At this time, a plurality of first arc-shaped holes 112 can be formed The ring-shaped hollow structure. Because the ring-shaped hollow structure has 360-degree elasticity, when it is set around the mounting hole 111, it can respond to external forces or dimensional deformation from any direction through its own deformation, adapt to a variety of complex environments, and limit the possible stress to a certain range Inside, it is ensured that the copper pillars will not fall off, thereby ensuring a good display effect of the LED display. To ensure the stability of its overall structure, the arc lengths of each first arc-shaped hole 112 are equal. In order to enhance the elastic strain capability of the entire annular hollow structure, the mounting hole position 110 in this embodiment further includes a plurality of second arc-shaped holes 113 arranged around the mounting hole 111, and the plurality of second arc-shaped holes 113 are equally spaced along the same circumference. Evenly distributed. The arc radius corresponding to each second arc-shaped hole 113 is larger than the arc radius corresponding to each first arc-shaped hole 112, so that the plurality of first arc-shaped holes 112 and the plurality of second arc-shaped holes 113 jointly form an annular hollow structure . The arc lengths corresponding to each second arc-shaped hole 113 are equal. The first arc-shaped holes 112 and the second arc-shaped holes 113 are staggered along the radial direction of the mounting hole 111. Through these settings, the elastic strain capacity of the entire annular hollow structure can be effectively enhanced. Preferably, the mounting hole position 110 in this embodiment includes four first arc holes 112 and four second arc holes 113 to pass through the four first arc holes 112 and four second arc holes 113 Together to form the annular hollow structure, the best strain effect can be achieved at this time, which not only ensures the stability of the overall structure, but also makes the elastic strain capacity of the entire annular hollow structure achieve the best effect.

In addition, as shown in FIGS. 1 and 2, a copper pillar 210 is fixed on the module PCB board 200, and the end of the copper pillar 210 away from the module PCB board 200 is provided with a connecting hole 211. The connecting piece 212 passes through the mounting hole 111. The mating connection with the connecting hole 211 of the copper pillar 210 makes the module PCB board 200 and the module bottom case 100 tightly connected. The fitting connection preferably adopts a threaded fitting connection, that is, the connecting hole 211 is preferably a threaded connecting hole, and the connecting member 212 is preferably a screw. The side where the mounting hole 111 and the copper column 210 are connected is provided with a receiving groove 114 to correspond to the end of the copper column 210 far away from the module PCB board 200, so that the fastening connection between the mounting hole 311 and the copper column 210 can be improved. firm.

The embodiments of the present invention have been described in detail above with reference to the accompanying drawings, but the present invention is not limited to the described embodiments. For those skilled in the art, without departing from the principle and spirit of the present invention, various changes, modifications, substitutions and modifications to these embodiments still fall within the protection scope of the present invention.

Industrial applicability

In the LED display module and the LED display provided by the present invention, the module bottom shell of the LED display module is provided with mounting holes for fastening and connecting the PCB board of the module, and the mounting holes include mounting holes and surrounding mounting holes Set ring hollow structure. In this way, because the ring-shaped hollow structure has 360-degree flexibility, when it is set around the mounting hole, it can respond to external forces or dimensional deformation from any direction through its own deformation, adapt to a variety of complex environments, and limit the possible stress to Within a certain range, ensure that the copper pillars will not fall off, thereby ensuring a good display effect of the LED display. It can be seen that this technical solution can effectively avoid the problem of copper pillars falling off due to the incorrect alignment of the mounting holes on the module bottom shell with the copper pillars on the module PCB board, thereby increasing product life and reducing subsequent maintenance Frequency and cost have industrial applicability.

Claims

An LED display module includes a module bottom shell, a module PCB board, and a plurality of LED lamp beads arranged on the side of the module PCB board away from the module bottom shell. The mounting holes are fastened to the module PCB board, and the mounting holes include mounting holes and a ring-shaped hollow structure arranged around the mounting holes.
The LED display module of claim 1, wherein the mounting hole is a round hole structure.
The LED display module according to claim 2, wherein the mounting hole position further comprises a plurality of first arc-shaped holes arranged around the mounting hole, and a plurality of the first arc-shaped holes are evenly spaced along the same circumference Distributed to form the annular hollow structure through a plurality of the first arc-shaped holes.
4. The LED display module of claim 3, wherein the arc lengths of each of the first arc holes are equal.
The LED display module according to claim 3, wherein the mounting hole position further comprises a plurality of second arc-shaped holes arranged around the mounting hole, and the plurality of second arc-shaped holes are evenly spaced along the same circumference Distribution; the radius of the arc corresponding to each of the second arc-shaped holes is greater than the radius of the arc corresponding to each of the first arc-shaped holes, so as to pass through the first arc-shaped holes and the second arcs The holes jointly form the annular hollow structure.
5. The LED display module of claim 5, wherein a plurality of the first arc-shaped holes and a plurality of the second arc-shaped holes are staggered along the radial direction of the mounting hole.
7. The LED display module of claim 6, wherein the mounting holes include four of the first arc-shaped holes and four of the second arc-shaped holes to pass through the four first arcs The hole and the four second arc-shaped holes jointly form the annular hollow structure.
7. The LED display module of any one of claims 1-7, wherein a copper pillar is fixed on the module PCB board, and an end of the copper pillar away from the module PCB board is provided with a connection hole, After passing through the mounting hole, the connecting piece is mated and connected with the connecting hole of the copper column, so that the module PCB board is firmly connected to the module bottom shell.
The LED display module according to claim 8, wherein a receiving groove is provided on one side of the mounting hole and the copper pillar to correspond to the end of the copper pillar away from the PCB board of the module .
An LED display screen, which comprises a plurality of LED display modules according to any one of claims 1-9, and the plurality of LED display modules are regularly distributed in a matrix.