LED module and LED display screen

Abstract

The present invention belongs to the technical field of display screens, and particularly relates to an LED module and an LED display screen. The LED module includes a bottom shell, an LED light board, and a plurality of connection components connecting the bottom shell and the LED light board; the connection component includes a copper column, a first buffer, and a connection component, the first end of the copper column is connected to the LED light board, the second end of the copper column extends into the first buffer, the connection component is connected between the bottom shell and the second end of the copper column, the first buffer is arranged between the bottom shell and the LED light board, and the end of the first buffer away from the LED light board abuts the bottom shell. In the present invention, after the LED light board is assembled with the bottom shell, the first buffer is located in the gap between the copper column and the bottom shell, which has a buffering effect on the tension exerted on the copper column, prevents the copper column from separating from the LED light board, plays a good role in protecting the copper column, increases the firmness and reliability of the copper column, and ensures that it is not easy to fall off.

Description

Technical Field

[0001] The invention belongs to the technical field of display screens, and in particular relates to an LED module and an LED display screen. Background Art

[0002] LED modules are one of the important components of LED display screens. Existing LED modules have the following problems:

[0003] (1) The copper pillar soldering process is simple. The copper pillar soldering is in contact with the surface of the copper pillar soldering pad. During soldering, soldering can only be performed on the circumference of the cylindrical body of the copper pillar, resulting in the copper pillar soldering being not strong. In addition, considering the temperature problem, soldering of the copper pillar soldering is difficult and wastes tin.

[0004] (2) Since the copper pillars of the SMD will be uneven after being soldered, the LED light board contacts the bottom shell during assembly. The copper pillars of the SMD need to keep a gap with the bottom shell to ensure that the flatness of the LED module is not affected. However, it is not considered that the long-term pulling force of the screws on the copper pillars of the SMD after assembly will weaken the firmness of the copper pillars of the SMD and easily cause the copper pillars of the SMD to fall off. The pulling force and torque of the screws are relatively large. Summary of the invention

[0005] The technical problem to be solved by the present invention is: to provide an LED module and an LED display screen in view of the problem that the copper pillars of the patch in the LED module of the prior art are not strong and are easy to fall off.

[0006] In order to solve the above technical problems, on the one hand, the present invention provides an LED module, comprising a bottom shell, an LED light board, and a plurality of connecting components connecting the bottom shell and the LED light board;

[0007] The connecting component includes a copper column, a first buffer and a connecting member, the first end of the copper column is connected to the LED light board, the second end of the copper column extends into the first buffer, the connecting member is connected between the bottom shell and the second end of the copper column, the first buffer is arranged between the bottom shell and the LED light board, and the end of the first buffer away from the LED light board abuts the bottom shell.

[0008] Optionally, the copper column includes a first column, a second column, a third column and a fourth column connected in sequence from the first end to the second end, and the second column is provided with a plurality of welding holes distributed along its circumference.

[0009] Optionally, the diameters of the first cylinder, the second cylinder, the third cylinder and the fourth cylinder are all different; and the axial lengths of the first cylinder, the second cylinder, the third cylinder and the fourth cylinder are all different.

[0010] Optionally, a first positioning hole is provided on the LED lamp board, and the first column is located in the first positioning hole.

[0011] Optionally, the connection component also includes a copper column pad fixedly connected to the LED light board, the copper column pad is located between the second column and the LED light board, a second positioning hole is provided on the copper column pad, and the first column passes through the second positioning hole.

[0012] Optionally, a plurality of laser holes are provided on the copper column pad.

[0013] Optionally, a first channel, a second channel and a third channel which are interconnected are axially arranged inside the first buffer component, the third column is located in the first channel, and the fourth column is located in the second channel.

[0014] Optionally, the second end of the copper column is provided with a blind hole for connecting the connecting piece.

[0015] Optionally, the LED module further includes a second buffer member, and the second buffer member is arranged between the connecting member and the bottom shell.

[0016] In another aspect, the present invention provides an LED display screen, comprising the LED module as described above.

[0017] In the present invention, the connection between the second end of the copper column and the connecting piece is located in the first buffer piece. After the LED light board is assembled with the bottom shell, the first buffer piece is located in the gap between the copper column and the bottom shell, which has a buffering effect on the tension exerted on the copper column, prevents the copper column from separating from the LED light board, and plays a good role in protecting the copper column, increasing the firmness and reliability of the copper column, and ensuring that it is not easy to fall off.

[0018] The copper column has a small volume and can be heated up quickly during soldering, so that the copper column has a high temperature and is easy to tin with a small amount of tin, which is environmentally friendly. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is a structural schematic diagram of an LED module provided by an embodiment of the present invention;

[0020] Figure 2 yes Figure 1 Schematic diagram of the cross-sectional structure along the AA direction;

[0021] Figure 3 is an enlarged structural schematic diagram of a connection assembly provided in one embodiment of the present invention;

[0022] Figure 4 is a schematic structural diagram of a copper column provided by an embodiment of the present invention;

[0023] Figure 5is a schematic structural diagram of a first buffer member provided by an embodiment of the present invention;

[0024] Figure 6 It is a schematic structural diagram of a copper pillar pad provided by an embodiment of the present invention.

[0025] The reference numerals in the specification are as follows:

[0026] 1. Bottom shell; 2. LED light board; 3. Connecting assembly; 4. Copper column; 41. First column; 42. Second column; 43. Third column; 44. Fourth column; 45. Blind hole; 46. Solder hole; 5. First buffer; 51. First channel; 52. Second channel; 53. Third channel; 6. Connecting piece; 7. Copper column pad; 71. Second positioning hole; 72. Laser hole; 8. Second buffer. DETAILED DESCRIPTION

[0027] In order to make the technical problems, technical solutions and beneficial effects solved by the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0028] like Figures 1 to 6 As shown, an embodiment of the present invention provides an LED module, comprising a bottom shell 1, an LED light board 2, and a plurality of connecting components 3 connecting the bottom shell 1 and the LED light board 2. The LED light board 2 is mounted with a plurality of LED lamp beads for emitting light, and the connecting components 3 are located between the LED light board 2 and the bottom shell 1 to achieve a firm connection between the LED light board 2 and the bottom shell 1.

[0029] The connecting component 3 includes a copper column 4, a first buffer component 5 and a connecting component 6, the first end of the copper column 4 is connected to the LED light board 2, the second end of the copper column 4 extends into the first buffer component 5, the connecting component 6 is connected between the bottom shell 1 and the second end of the copper column 4, the first buffer component 5 is arranged between the bottom shell 1 and the LED light board 2, and the end of the first buffer component 5 away from the LED light board 2 abuts against the bottom shell 1.

[0030] In the present invention, the connection between the second end of the copper column 4 and the connecting piece 6 is located in the first buffer member 5. After the LED light board 2 is assembled with the bottom shell 1, the first buffer member 5 is located in the gap between the copper column 4 and the bottom shell 1, which has a buffering effect on the tension exerted on the copper column 4, prevents the copper column 4 from separating from the LED light board 2, and plays a good role in protecting the copper column 4, increasing the firmness and reliability of the copper column 4, and ensuring that it is not easy to fall off.

[0031] The copper pillar 4 is relatively small in size and can quickly reach a high temperature during soldering, so that the copper pillar 4 is easily tinned at a high temperature and uses a small amount of tin, which is environmentally friendly.

[0032] like Figure 4 As shown, in one embodiment, the second end of the copper column 4 is provided with a blind hole 45 for connecting the connector 6. Preferably, the inner wall of the blind hole 45 is provided with a thread, and the blind hole 45 is threadedly connected to the connector 6.

[0033] In one embodiment, the connecting member 6 may be, but is not limited to, a screw or a bolt.

[0034] like Figure 4 As shown, in one embodiment, along the direction from the first end to the second end of the copper column 4, the copper column 4 includes a first column 41, a second column 42, a third column 43 and a fourth column 44 connected in sequence, and the second column 42 is provided with a plurality of welding holes 46 distributed along its circumference, and the welding holes 46 penetrate the second column 42 along the axial direction of the second column 42.

[0035] In one embodiment, the diameters of the first cylinder 41, the second cylinder 42, the third cylinder 43 and the fourth cylinder 44 are all different, and the axial lengths of the first cylinder 41, the second cylinder 42, the third cylinder 43 and the fourth cylinder 44 are all different. The diameter of the first cylinder 41 is the smallest, the diameter of the second cylinder 42 is the largest, the diameter of the fourth cylinder 44 is larger than the diameter of the third cylinder 43, and the central axes of the first cylinder 41, the second cylinder 42, the third cylinder 43 and the fourth cylinder 44 are on the same straight line.

[0036] The number of the welding holes 46 can be determined according to the size of the second column 42 and the connection strength requirement between the copper column 4 and the copper column pad 7. In one embodiment, four welding holes 46 are provided, and the four welding holes 46 are arranged on the second column 42 at equal intervals.

[0037] like Figure 3 As shown, in one embodiment, a first positioning hole is provided on the LED lamp board 2, and the first column 41 is located in the first positioning hole. By connecting the first column 41 and the first positioning hole, the position of the connecting component 3 is accurately positioned, and the copper column 4 can be prevented from shifting during use.

[0038] like Figure 3 , Figure 6As shown, in one embodiment, the connecting component 3 also includes a copper column pad 7 fixedly connected to the LED light board 2, and the copper column pad 7 is located between the second column 42 and the LED light board 2. A second positioning hole 71 is provided on the copper column pad 7, and the first column 41 passes through the second positioning hole 71 and extends into the first positioning hole. Preferably, the second positioning hole 71 is located at the center of the copper column pad 7.

[0039] When assembling the LED module, the copper column pad 7 is fixedly connected to the LED lamp board 2, and the copper column 4 is welded to the copper column pad 7 by soldering. Soldering is performed in the circumference of the second column 42 of the copper column 4 and the soldering hole 46 to form a welding of the middle tin and the circumferential tin, thereby increasing the firmness of the welding between the copper column 4 and the copper column pad 7 and ensuring the firmness and reliability of the copper column 4.

[0040] In one embodiment, a plurality of laser holes 72 are provided on the copper column pad 7 to facilitate heat dissipation between the copper column 4 and the LED light board 2 .

[0041] like Figure 5 As shown, in one embodiment, the first buffer 5 is provided with a first channel 51, a second channel 52 and a third channel 53 interconnected along the axial direction. When the second end of the copper column 4 extends into the first buffer 5, the third column 43 is located in the first channel 51, and the fourth column 44 is located in the second channel 52. The diameter of the fourth column 44 is larger than that of the third column 43, and correspondingly, the diameter of the second channel 52 is larger than that of the first channel 51, so that the second end of the copper column 4 is well confined in the first buffer 5 and is not easy to be separated.

[0042] The first buffer member 5 is made of elastic material. Preferably, in this embodiment, the first buffer member 5 is a buffer rubber pad. After the LED light board 2 and the bottom shell 1 are assembled together, the first buffer member 5 between the fourth column 44 of the copper column 4 and the bottom shell 1 is squeezed, which can buffer the long-term tensile force on the copper column 4.

[0043] like Figure 3 As shown, in one embodiment, the LED module also includes a second buffer 8, and the second buffer 8 is made of an elastic material. Preferably, the second buffer 8 is a screw rubber pad, which is assembled together with the connecting member 6. The second buffer 8 is arranged between the connecting member 6 and the bottom shell 1, and can buffer the tension and torsion of the connecting member 6.

[0044] During assembly, the second end of the copper column 4 is inserted into the first buffer member 5, and the first column body 41 of the copper column is positioned and inserted into the first positioning hole of the LED lamp board 2. Then, the bottom shell is covered, and a countersunk hole is provided on the bottom shell. The connecting member (such as a screw) is provided in the countersunk hole. The connecting member passes through the third channel of the bottom shell and the first buffer member 5, and extends into the blind hole 45 of the copper column 4. After tightening the connecting member 6, the assembly of the LED module is completed.

[0045] On the other hand, an embodiment of the present invention provides an LED display screen, comprising the LED module as described above.

[0046] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An LED module, characterized in that: It includes a bottom shell, an LED light board, and a plurality of connecting components connecting the bottom shell and the LED light board; The connecting component comprises a copper column, a first buffer and a connecting member, wherein the first end of the copper column is connected to the LED light board, the second end of the copper column extends into the first buffer, the connecting member is connected between the bottom shell and the second end of the copper column, the first buffer is arranged between the bottom shell and the LED light board, and one end of the first buffer away from the LED light board abuts against the bottom shell; The copper column comprises a first column, a second column, a third column and a fourth column which are sequentially connected from the first end to the second end, and the second column is provided with a plurality of welding holes distributed along its circumference; The first buffer is provided with a first channel, a second channel and a third channel connected to each other in the axial direction, the third column is located in the first channel, and the fourth column is located in the second channel; The diameter of the fourth column is greater than that of the third column, the diameter of the second channel is greater than that of the first channel, and the diameter of the second channel is greater than that of the third channel.

2. The LED module according to claim 1, wherein: The diameters of the first cylinder, the second cylinder, the third cylinder and the fourth cylinder are all different; The axial lengths of the first cylinder, the second cylinder, the third cylinder and the fourth cylinder are all different.

3. The LED module according to claim 1, characterized in that: The LED lamp board is provided with a first positioning hole, and the first column is located in the first positioning hole.

4. The LED module according to claim 1, characterized in that: The connection assembly also includes a copper column pad fixedly connected to the LED lamp board, the copper column pad is located between the second column and the LED lamp board, a second positioning hole is provided on the copper column pad, and the first column passes through the second positioning hole.

5. The LED module according to claim 4, characterized in that: A plurality of laser holes are arranged on the copper column pad.

6. The LED module according to claim 1, wherein: The second end of the copper column is provided with a blind hole for connecting the connecting piece.

7. The LED module according to claim 1, wherein: The LED module further includes a second buffer member, which is arranged between the connecting member and the bottom shell.

8. An LED display screen, characterized in that: The LED module comprises any one of claims 1 to 7.

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