LED display module

Abstract

The present invention provides an LED display module, comprising: a bracket, the bracket comprising an outer frame and a plurality of cross beams and a plurality of longitudinal beams arranged in the outer frame, the plurality of cross beams and the plurality of longitudinal beams intersectingly arranged to form a plurality of accommodating spaces, the plurality of accommodating spaces comprising a first accommodating space located in the middle of the bracket, a second accommodating space located on the first side of the first accommodating space along the transverse direction, and a third accommodating space located on the second side of the first accommodating space along the transverse direction; an LED light board, the LED light board comprising a module circuit, a power supply interface and a signal interface arranged corresponding to the first accommodating space, a main body of a first row driving circuit and a main body of a column driving circuit arranged corresponding to the second accommodating space, and a main body of a second row driving circuit arranged corresponding to the third accommodating space; and a back cover arranged at the rear side of the bracket. The technical solution of the present application can effectively solve the problem of poor heat dissipation effect of LED display modules in the prior art affecting service life.

Description

Technical Field

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

[0002] In the related art, the LED display module generally includes: an LED light board, a bracket and a back cover. Among them, a large number of LED lamp beads are arranged on the front side of the LED light board, an IC chip for controlling the operation of the LED lamp beads is arranged on the back side of the LED light board, and a module circuit connecting the LED lamp beads and the IC chip is also arranged on the LED light board.

[0003] When the LED display module is working, the LED lamp beads emit light and generate a lot of heat. The setting of the back cover makes the heat dissipation effect of the LED display module poor, which affects the service life of the LED display module. Summary of the invention

[0004] The main purpose of the present invention is to provide an LED display module to solve the problem in the prior art that the LED display module has a poor heat dissipation effect and affects its service life.

[0005] In order to achieve the above-mentioned purpose, the present invention provides an LED display module, comprising: a bracket, the bracket comprising an outer frame and a plurality of cross beams and a plurality of longitudinal beams arranged in the outer frame, the plurality of cross beams and the plurality of longitudinal beams intersectingly arranged to form a plurality of accommodating spaces, the plurality of accommodating spaces comprising a first accommodating space located in the middle position of the bracket, a second accommodating space located on the first side of the first accommodating space along the transverse direction, and a third accommodating space located on the second side of the first accommodating space along the transverse direction, the cross-sectional area of ​​the first accommodating space is smaller than the cross-sectional area of ​​the second accommodating space, and the cross-sectional area of ​​the first accommodating space is smaller than the cross-sectional area of ​​the third accommodating space; an LED light board, arranged on the front side of the bracket, the LED light board comprising a module circuit, the module circuit comprising a power supply interface, a signal interface, a first row drive circuit, a second row drive circuit and a column drive circuit, wherein the power supply interface and the signal interface are arranged corresponding to the first accommodating space, the main body of the first row drive circuit and the main body of the column drive circuit are arranged corresponding to the second accommodating space, and the main body of the second row drive circuit is arranged corresponding to the third accommodating space; a back cover, arranged on the back side of the bracket.

[0006] Furthermore, the column driving circuit is located at a side of the first row driving circuit away from the first accommodating space.

[0007] Furthermore, the module circuit also includes a first signal driving circuit and a second signal driving circuit, the first signal driving circuit is arranged corresponding to the second accommodating space, and the second signal driving circuit is arranged corresponding to the third accommodating space.

[0008] Furthermore, the multiple accommodating spaces also include a fourth accommodating space located above the second accommodating space and a fifth accommodating space located below the second accommodating space, and the remaining parts of the first row driving circuit are respectively arranged in the fourth accommodating space and the fifth accommodating space; the multiple accommodating spaces also include a sixth accommodating space located above the third accommodating space and a seventh accommodating space located below the third accommodating space, and the remaining parts of the second row driving circuit are respectively arranged in the sixth accommodating space and the seventh accommodating space.

[0009] Furthermore, reinforcing ribs are provided on the side of the back cover facing the bracket, and the reinforcing ribs include multiple transverse reinforcing ribs and multiple vertical reinforcing ribs, and the multiple transverse reinforcing ribs and the multiple vertical reinforcing ribs are staggered; a first component layout area and a second component layout area are provided on the back side of the LED light board, the height of the components in the first component layout area is greater than the height of the components in the second component layout area, the second component layout area is arranged corresponding to the position of the reinforcing ribs on the back cover, and the first component layout area corresponds to the position of the back cover other than the reinforcing ribs.

[0010] Furthermore, the LED display module also includes an adhesive layer arranged between the LED light board and the bracket, and the LED light board is bonded to the bracket through the adhesive layer; the adhesive layer includes a first adhesive layer arranged on the outer frame and a second adhesive layer arranged on the cross beam and the longitudinal beam, and the second adhesive layer is a plurality of sections arranged at intervals to avoid the intersection of the cross beam and the longitudinal beam.

[0011] Further, the number of cross beams is two, the distance between the two cross beams is a first distance A1, the distance between each cross beam and an adjacent outer frame is a second distance A2, and the ratio A1 / A2 between the first distance A1 and the second distance A2 satisfies: 0.5≤A1 / A2≤0.8; and / or, the number of longitudinal beams is two, the distance between the two longitudinal beams is a third distance B1, the distance between each longitudinal beam and an adjacent outer frame is a fourth distance B2, and the ratio B1 / B2 between the third distance B1 and the fourth distance B2 satisfies: 1.8≤B1 / B2≤2.4.

[0012] Furthermore, an insulating coating is provided on the rear side of the LED light board at a position corresponding to the bracket.

[0013] Furthermore, the distance between the IC chip in the module circuit and the outer frame, the horizontal beam and the longitudinal beam is more than 2 mm.

[0014] Furthermore, the LED display module also includes a clamping structure arranged between the bracket and the back cover, and the clamping structure includes a buckle arranged separately from the back cover and a clamping slot arranged on the bracket.

[0015] Furthermore, the back cover includes a back cover body and a connecting piece arranged at a first edge of the back cover body, the buckle includes a connecting portion connected to the connecting piece, and the LED display module also includes a plug-in structure arranged between a second edge of the back cover body and the bracket, wherein the first edge and the second edge are arranged opposite to each other; the connecting piece includes a first connecting piece connected to the back cover body and perpendicular to the back cover body, the connecting portion includes two hooks arranged opposite to each other, and the first connecting piece is clamped between the two hooks.

[0016] Furthermore, the connecting piece also includes a second connecting piece connected to the first connecting piece and perpendicular to the first connecting piece, and the connecting part also includes a slot arranged between the two hooks, and part of the second connecting piece is inserted in the slot; the second connecting piece includes a first sheet body and a second sheet body connected to each other, the first sheet body is connected to the first connecting piece, the width of the first sheet body is greater than the width of the second sheet body, and the second sheet body is inserted in the slot.

[0017] Applying the technical solution of the present invention, the LED display module includes: a bracket, a accommodating space, an LED light board, a module circuit and a back cover. The LED light board is arranged on the front side of the bracket, and the back cover is arranged on the back side of the bracket. The back cover can effectively protect the components on the back side of the LED light board to prevent these components from being exposed to the outside and affecting the service life of the LED display module. The bracket includes an outer frame and a plurality of cross beams and a plurality of longitudinal beams arranged inside the outer frame. The plurality of cross beams and a plurality of longitudinal beams intersect to form a plurality of accommodating spaces with different cross-sectional areas. Different parts of the module circuit correspond to different accommodating space settings, so that the heat dissipation effect of the LED display module is better. Specifically, in the present application, the main part of the first row drive circuit and the column drive circuit is arranged in the second accommodating space with a larger cross-sectional area, and the main part of the second row drive circuit is arranged in the third accommodating space with a larger cross-sectional area. These circuits with larger heat generation are arranged inside the accommodating space with a larger cross-sectional area, so that the overall heat dissipation performance of the LED display module is better. Therefore, the technical solution of the present application can effectively solve the problem that the heat dissipation effect of the LED display module in the related art is poor and affects the service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The drawings constituting a part of the present application are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0019] Figure 1 A schematic diagram of the exploded structure of an embodiment of an LED display module according to the present invention is shown;

[0020] Figure 2 Shows Figure 1 An enlarged view of the LED display module at M;

[0021] Figure 3 Shows Figure 1 An enlarged view of a portion of the structure of an LED display module;

[0022] Figure 4 Shows Figure 1 A schematic cross-sectional view of the upper portion of an LED display module;

[0023] Figure 5 Shows Figure 1 A schematic cross-sectional view of the lower portion of an LED display module;

[0024] Figure 6 Shows Figure 1 The rear view of the LED light board of the LED display module;

[0025] Figure 7 Shows Figure 6 A diagram showing the division of the component layout area at the rear of the LED light board;

[0026] Figure 8 Shows Figure 1 A rear view schematic diagram of an LED light panel and a bracket of an LED display module;

[0027] Fig. 9 Shows Figure 8 A front view of the stent and a distribution diagram of the glue layer on the front side of the stent;

[0028] Fig.10 Shows Figure 1 A schematic diagram of the three-dimensional structure of the back cover of the LED display module;

[0029] Fig.11 Shows Fig.10 A schematic diagram of the three-dimensional structure of the back cover from another angle;

[0030] Fig.12 Shows Fig.11 An enlarged view of the back cover at position N; and

[0031] Fig.13 Shows Figure 1 Schematic diagram of the three-dimensional structure of the buckle of the LED display module.

[0032] The above drawings include the following reference numerals:

[0033] 10. Bracket; 11. Outer frame; 12. Crossbeam; 13. Longitudinal beam; 20. Accommodation space; 21. First accommodation space; 22. Second accommodation space; 23. Third accommodation space; 24. Fourth accommodation space; 25. Fifth accommodation space; 26. Sixth accommodation space; 27. Seventh accommodation space; 30. LED light board; 31. First component layout area; 32. Second component layout area; 33. Insulation coating; 40. Module circuit; 41. Power supply interface; 42. Signal interface; 43. First row drive circuit; 44. Second row drive circuit; 45. Column drive circuit; 46. First signal drive circuit; 47. The second signal driving circuit; 50, the back cover; 51, the reinforcing ribs; 511, the transverse reinforcing ribs; 512, the vertical reinforcing ribs; 52, the back cover body; 53, the connecting piece; 531, the first connecting piece; 532, the second connecting piece; 5321, the first sheet; 5322, the second sheet; 60, the adhesive layer; 61, the first adhesive layer; 62, the second adhesive layer; 70, the IC chip; 80, the snap-fit ​​structure; 81, the buckle; 811, the connecting part; 8111, the hook; 8112, the slot; 812, the elastic clamping arm; 813, the clamping block; 814, the spring; 82, the card slot; 90, the plug-in structure; 91, the plug-in block; 92, the socket. DETAILED DESCRIPTION

[0034] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is by no means intended to limit the present invention and its application or use. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0035] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0036] Unless otherwise specifically stated, the relative arrangement of the parts and steps described in these embodiments, numerical expressions and numerical values ​​do not limit the scope of the present invention. At the same time, it should be understood that, for ease of description, the sizes of the various parts shown in the accompanying drawings are not drawn according to the actual proportional relationship. The technology, method and equipment known to ordinary technicians in the relevant field may not be discussed in detail, but in appropriate cases, the technology, method and equipment should be regarded as a part of the authorization specification. In all examples shown and discussed here, any specific value should be interpreted as being merely exemplary, rather than as a limitation. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters represent similar items in the following drawings, so once a certain item is defined in an accompanying drawing, it does not need to be further discussed in subsequent drawings.

[0037] like Figure 1 , Figure 6 and Figure 8 As shown, the LED display module of this embodiment includes: a bracket 10, a accommodating space 20, an LED light board 30, a module circuit 40 and a back cover 50. The bracket 10 includes an outer frame 11 and a plurality of cross beams 12 and a plurality of longitudinal beams 13 arranged in the outer frame 11. The plurality of cross beams 12 and the plurality of longitudinal beams 13 are arranged to intersect to form a plurality of accommodating spaces 20. The plurality of accommodating spaces 20 include a first accommodating space 21 located in the middle position of the bracket 10, a second accommodating space 22 located on a first side of the first accommodating space 21 along the transverse direction, and a third accommodating space 23 located on a second side of the first accommodating space 21 along the transverse direction. The cross-sectional area of ​​the first accommodating space 21 is smaller than the cross-sectional area of ​​the second accommodating space 22, and the cross-sectional area of ​​the first accommodating space 21 is smaller than the cross-sectional area of ​​the third accommodating space 23. 3; the LED light board 30 is arranged on the front side of the bracket 10, the LED light board 30 includes a module circuit 40, the module circuit 40 includes a power supply interface 41, a signal interface 42, a first row drive circuit 43, a second row drive circuit 44 and a column drive circuit 45, wherein the power supply interface 41 and the signal interface 42 are arranged corresponding to the first accommodating space 21, the main body of the first row drive circuit 43 and the main body of the column drive circuit 45 are arranged corresponding to the second accommodating space 22, and the main body of the second row drive circuit 44 is arranged corresponding to the third accommodating space 23; the back cover 50 is arranged on the rear side of the bracket 10.

[0038] Applying the technical solution of this embodiment, the LED display module includes: a bracket 10, a accommodating space 20, an LED light board 30, a module circuit 40 and a back cover 50. The LED light board 30 is arranged on the front side of the bracket 10, and the back cover 50 is arranged on the back side of the bracket 10. The back cover 50 can effectively protect the components on the back side of the LED light board 30 to prevent these components from being exposed to the outside and affecting the service life of the LED display module. The bracket 10 includes an outer frame 11 and a plurality of cross beams 12 and a plurality of longitudinal beams 13 arranged inside the outer frame 11. The plurality of cross beams 12 and the plurality of longitudinal beams 13 are intersected to form a plurality of accommodating spaces 20 with different cross-sectional areas. Different parts of the module circuit 40 correspond to different accommodating spaces 20, respectively, so that the heat dissipation effect of the LED display module is better. Specifically, in this embodiment, the main parts of the first row driving circuit 43 and the column driving circuit 45 are arranged in the second accommodation space 22 with a larger cross-sectional area, and the main part of the second row driving circuit 44 is arranged in the third accommodation space 23 with a larger cross-sectional area. These circuits that generate more heat are arranged inside the accommodation space with a larger cross-sectional area, so that the overall heat dissipation performance of the LED display module is better. Therefore, the technical solution of this embodiment can effectively solve the problem of poor heat dissipation effect of the LED display module affecting the service life in the related art.

[0039] In this embodiment, if Figure 1 As shown, the side where the LED light board 30 is located is the front side of the bracket 10, and the side where the rear cover 50 is located is the rear side of the bracket 10. Two cross beams 12 and two longitudinal beams 13 are arranged inside the outer frame 11, and the two cross beams 12 and the two longitudinal beams 13 form a "well"-shaped structure, and a three-dimensional ring is formed between the cross beams 12 and the longitudinal beams 13, thereby increasing the heat dissipation area.

[0040] It should be noted that the above-mentioned “cross-sectional area of ​​the first accommodating space 21” refers to the projection area of ​​the first accommodating space 21 on a plane parallel to the front surface of the LED light board 30. Correspondingly, the cross-sectional areas of the second accommodating space 22 and the third accommodating space 23 are also projection areas on a plane parallel to the front surface of the LED light board 30. The “main part” of the circuit refers to most of the IC chips of the circuit, that is, in this embodiment: most of the IC chips of the first row driving circuit 43 are arranged corresponding to the second accommodating space 22; most of the column driving circuit 45 are arranged corresponding to the second accommodating space 22; most of the second row driving circuit 44 are arranged corresponding to the third accommodating space 23. Figure 6 FIG. 4 schematically illustrates the composition of the first row driving circuit 43 , the second row driving circuit 44 and the column driving circuit 45 . Of course, the actual circuit composition is not limited to that shown in the figure.

[0041] In this embodiment, “the first side of the first accommodating space 21 along the transverse direction” is Figure 8The left side of the first accommodating space 21 in the “second side of the first accommodating space 21 along the lateral direction” is Figure 8 Of course, in other feasible implementations, the second accommodation space may also be arranged on the right side of the first accommodation space, and correspondingly, the third accommodation space may also be arranged on the left side of the first accommodation space, as long as the second accommodation space and the third accommodation space are respectively located on both sides of the first accommodation space in the lateral direction.

[0042] like Figure 6 As shown, in this embodiment, the column driving circuit 45 is located on a side of the first row driving circuit 43 away from the first accommodating space 21. This can make the circuit layout inside the LED light board 30 more reasonable.

[0043] like Figure 6 As shown, in this embodiment, the module circuit 40 further includes a first signal driving circuit 46 and a second signal driving circuit 47. The first signal driving circuit 46 is arranged corresponding to the second accommodating space 22, and the second signal driving circuit 47 is arranged corresponding to the third accommodating space 23. In this way, the circuit layout inside the LED light board 30 can be more reasonable.

[0044] like Figure 6 As shown, in this embodiment, the plurality of accommodating spaces 20 further include a fourth accommodating space 24 located above the second accommodating space 22 and a fifth accommodating space 25 located below the second accommodating space 22, and the remaining parts of the first row driving circuit 43 are respectively arranged in the fourth accommodating space 24 and the fifth accommodating space 25; the plurality of accommodating spaces 20 further include a sixth accommodating space 26 located above the third accommodating space 23 and a seventh accommodating space 27 located below the third accommodating space 23, and the remaining parts of the second row driving circuit 44 are respectively arranged in the sixth accommodating space 26 and the seventh accommodating space 27. The first row driving circuit 43 and the second row driving circuit 44 are respectively arranged in the plurality of accommodating spaces 20, so that the IC chips in the circuit are scattered and arranged, so that the heat dissipation is more uniform, and the problem of the LED display module being prone to high temperature color bands due to uneven heat dissipation in the related art is solved.

[0045] like Figure 1 , Figure 7 and Fig.10As shown, a reinforcing rib 51 is provided on the side of the back cover 50 facing the bracket 10, and the reinforcing rib 51 includes a plurality of transverse reinforcing ribs 511 and a plurality of vertical reinforcing ribs 512, and the plurality of transverse reinforcing ribs 511 and the plurality of vertical reinforcing ribs 512 are arranged alternately; a first component layout area 31 and a second component layout area 32 are provided on the back side of the LED light board 30, and the height of the components in the first component layout area 31 is greater than the height of the components in the second component layout area 32, and the second component layout area 32 corresponds to the position setting of the reinforcing rib 51 on the back cover 50, and the first component layout area 31 corresponds to the position outside the reinforcing rib 51 of the back cover 50. The setting of the reinforcing rib 51 can enhance the strength of the back cover 50, thereby improving the overall strength of the LED display module. The second component layout area 32 corresponds to the position setting of the reinforcing rib 51, and the components with lower height are arranged in the second component layout area 32, which can avoid interference between the components and the reinforcing rib 51.

[0046] like Figure 1 and Fig. 9 As shown, in this embodiment, the LED display module also includes a glue layer 60 arranged between the LED light board 30 and the bracket 10, and the LED light board 30 is bonded to the bracket 10 through the glue layer 60; the glue layer 60 includes a first glue layer 61 arranged on the outer frame 11 and a second glue layer 62 arranged on the cross beam 12 and the longitudinal beam 13, and the second glue layer 62 is a plurality of sections arranged at intervals to avoid the intersection of the cross beam 12 and the longitudinal beam 13. The LED light board 30 and the bracket 10 are bonded together by the glue layer 60. Specifically, the glue layer 60 is a 0.4mm 3M thermal conductive electronic glue, which has good thermal conductivity, insulation and viscosity, so that the LED light board 30 can be firmly bonded to the bracket 10, and a screwless connection between the bracket 10 and the LED light board 30 is realized. It can effectively avoid the LED light board being easily damaged by screw fixing connection. The second glue layer 62 includes multiple sections of glue layers, and the multiple sections of glue layers are arranged at intervals, which can reduce the precision requirements of the glue while ensuring the bonding effect. Specifically, in this embodiment, the intervals between the multiple sections of the second adhesive layer 62 are less than 40 mm.

[0047] Meanwhile, in the present embodiment, the LED light board 30 and the bracket 10 are connected without screws, so that the LED display module can be prevented from being bent and deformed due to natural shrinkage caused by long-term exposure to heat after being connected with screws.

[0048] There are two crossbeams 12, the distance between the two crossbeams 12 is the first distance A1, the distance between each crossbeam 12 and the adjacent outer frame 11 is the second distance A2, and the ratio A1 / A2 between the first distance A1 and the second distance A2 satisfies: 0.5≤A1 / A2≤0.8; there are two longitudinal beams 13, the distance between the two longitudinal beams 13 is the third distance B1, the distance between each longitudinal beam 13 and the adjacent outer frame 11 is the fourth distance B2, and the ratio B1 / B2 between the third distance B1 and the fourth distance B2 satisfies: 1.8≤B1 / B2≤2.4. This arrangement can make the layout of the circuits and electronic components inside the LED display module more reasonable while ensuring the strength of the bracket 10. Since the power supply interface 41 and the signal interface 42 that are plugged into the external power line and signal line are set in the first accommodating space 21, it is necessary to make the structural strength of the first accommodating space 21 larger. When A1 / A2<0.5, the distance between the two beams 12 will be too small, making the layout of the IC chips and other components in the first accommodation space 21 too close, and the heat dissipation effect of the first accommodation space 21 is not good; at the same time, the layout of the power supply interface 41 and the signal interface 42 will be too close, which is inconvenient for the plugging and unplugging of the signal line and the power line. When A1 / A2>0.8, the strength around the first accommodation space 21 will be relatively small, and the second accommodation space 22 and the third accommodation space 23 will be relatively small. The layout of the IC chips and other components in the second accommodation space 22 and the third accommodation space 23 is relatively close, and the heat dissipation effect is not good. When B1 / B2<1.8, the fourth accommodation space 24, the fifth accommodation space 25, the sixth accommodation space 26 and the seventh accommodation space 27 will be larger, and more IC chips will be set in these accommodation spaces accordingly. However, these accommodation spaces are close to the outer frame 11, and the outer frame 11 is wider than the beams 12 and the longitudinal beams 13, and the heat dissipation effect is not good. When B1 / B2>2.4, the fourth accommodating space 24, the fifth accommodating space 25, the sixth accommodating space 26 and the seventh accommodating space 27 will be smaller, and fewer IC chips can be placed therein, so that most of the IC chips are placed in the middle longitudinal position of the LED lamp board 30, and such a layout is not reasonable.

[0049] Specifically, in this embodiment, the ratio A1 / A2 between the first distance A1 and the second distance A2 can be 0.5, 0.6 or 0.8; the ratio B1 / B2 between the third distance B1 and the fourth distance B2 is 1.8, 2.1 or 2.4. The values ​​of A1 / A2 and B1 / B2 are set comprehensively to ensure both heat dissipation effect and structural strength.

[0050] like Figure 1 , Figure 6 and Figure 8As shown, in this embodiment, an insulating coating 33 is provided on the rear side of the LED light board 30 corresponding to the position of the bracket 10. The bracket 10 is a metal bracket, specifically an aluminum bracket. The width of the insulating coating 33 is greater than the width of the cross beam 12 and the longitudinal beam 13, so that the circuits or components on the LED light board 30 can be prevented from touching the metal bracket and affecting the display effect of the LED limiting module.

[0051] In this embodiment, the distance between the IC chip 70 in the module circuit 40 and the outer frame 11, the cross beam 12 and the longitudinal beam 13 is more than 2 mm. This arrangement can prevent components from touching the metal bracket and affecting the display effect of the LED limiting module.

[0052] like Figures 1 to 4 As shown, in this embodiment, the LED display module also includes a snap-fit ​​structure 80 disposed between the bracket 10 and the back cover 50, and the snap-fit ​​structure 80 includes a snap-fit ​​81 disposed separately from the back cover 50 and a slot 82 disposed on the bracket 10. The installation between the back cover 50 and the bracket 10 is achieved by the snap-fit ​​structure 80, which can realize the rapid assembly and maintenance between the back cover 50 and the bracket 10, thereby reducing the production cost and improving the production efficiency. At the same time, the snap-fit ​​81 is disposed separately from the back cover 50, which is convenient for processing the snap-fit ​​81 separately, making the structure of the back cover 50 simple and easier to process.

[0053] The snap-fit ​​structure 80 also includes a snap slot 82 provided on the bracket 10. After the rear cover 50 is mounted on the bracket 10, the snap 81 is completely located in the space between the rear cover 50 and the bracket 10, that is, the snap 81 is hidden in the space between the rear cover 50 and the bracket 10, so that the snap 81 is prevented from being exposed to the outside, thereby extending the service life of the snap 81. At the same time, it is also prevented from being deformed and falling out of the snap slot 82 due to the user accidentally touching the snap 81 during use, thereby preventing the rear cover 50 from falling off the bracket 10.

[0054] Specifically, in this embodiment, the back cover 50 is made of metal material, and the buckle 81 is made of plastic material. In this embodiment, the back cover 50 is made of metal with good thermal conductivity such as metal aluminum. The use of aluminum back cover 50 enables the LED display module to have good physical heat dissipation performance. At the same time, the buckle 81 is made of plastic material, which has good elasticity, low cost, and is easy to produce.

[0055] like Figures 1 to 5 as well as Figures 11 to 13As shown, the back cover 50 includes a back cover body 52 and a connecting piece 53 arranged at a first edge of the back cover body 52, the buckle 81 includes a connecting portion 811 connected to the connecting piece 53, and the LED display module also includes a plug-in structure 90 arranged between the second edge of the back cover body 50 and the bracket 10, wherein the first edge and the second edge are arranged opposite to each other. Fig.11 The upper edge of the rear cover 50 in the Fig.11 The lower edge of the rear cover 50 in the bracket 10 is formed by the plug-in structure 90 and the clamping structure 80. The clamping structure 81 is connected to the connecting piece 53 through the connecting portion 811, so as to realize the connection between the clamping structure 81 and the rear cover 50. The structure is simple and easy to manufacture. The plug-in structure 90 includes an insert block 91 and a socket 92, wherein the insert block 91 and the rear cover body 52 are an integrally formed structure, and the socket 92 is arranged on the bracket 10. The rear cover 50 is installed on the bracket 10 through the plug-in structure 90 and the clamping structure 80, which has the advantages of simple structure and easy installation.

[0056] like Figure 4 and Figure 5 As shown, in this embodiment, the socket 92 and the slot 82 are both arranged on the front side of the bracket 10 (i.e., the side of the bracket 10 facing the LED light board 30), and the buckle 81 and the insert block 91 are respectively located on opposite sides of the rear cover 50. The socket 92 is arranged on the lower surface of the bottom crossbeam of the bracket 10, and the slot 82 is arranged on the lower surface of the upper crossbeam of the bracket 10. When installing, the user first inserts the insert block 91 into the socket 92, and then makes the buckle 81 locked in the slot 82 to achieve the installation of the rear cover 50.

[0057] In this embodiment, the buckle 81 is disposed on the upper side wall of the rear cover 50 and extends upward, and the insert block 91 is disposed on the lower side wall of the rear cover 50 and extends downward. In other feasible implementations, the buckle may also be disposed on the lower side wall of the rear cover, and correspondingly, the insert block may be disposed on the upper side wall of the rear cover. Meanwhile, the buckle and the insert block may also be disposed on the left and right side walls of the rear cover, respectively.

[0058] In this embodiment, the number of the buckles 81 is two, and the number of the inserting blocks 91 is also two.

[0059] like Figures 1 to 5 as well as Figures 11 to 13 As shown, the connecting piece 53 includes a first connecting piece 531 connected to the rear cover body 52 and perpendicular to the rear cover body 52, and the connecting portion 811 includes two hooks 8111 arranged opposite to each other, and the first connecting piece 531 is clamped between the two hooks 8111. The connection between the connecting piece 53 and the buckle 81 can be achieved by clamping the first connecting piece 531 with the two hooks 8111, and the structure is simple and easy to operate.

[0060] The connecting piece 53 also includes a second connecting piece 532 connected to the first connecting piece 531 and perpendicular to the first connecting piece 531. The connecting portion 811 also includes a slot 8112 arranged between the two hooks 8111, and part of the second connecting piece 532 is inserted in the slot 8112. The second connecting piece 532 includes a first sheet 5321 and a second sheet 5322 connected to each other. The first sheet 5321 is connected to the first connecting piece 531. The width of the first sheet 5321 is greater than the width of the second sheet 5322. The second sheet 5322 is inserted in the slot 8112. The connecting piece 53 includes the first connecting piece 531 and the second connecting piece 532 connected to each other, and has a simple structure and is easy to manufacture. At the same time, part of the second connecting piece 532 is inserted in the slot 8112, and the two hooks 8111 clamp the first connecting piece 531 to achieve a fastening connection between the buckle 81 and the connecting piece 53. A guiding slope is provided on the inner side of the two hooks 8111. During installation, it is only necessary to align the second sheet 5322 with the slot 8112, and the first sheet 5321 pushes the guiding slope so that the two hooks 8111 expand outward and finally clamp the two ends of the first connecting sheet 531, thereby realizing the installation between the buckle 81 and the connecting sheet 53, which is simple and quick to operate.

[0061] It should be noted that the above-mentioned “perpendicular to” means that the angle between the first connecting piece 531 and the rear cover body 52 is about 90°. Of course, due to manufacturing errors, the angle between the first connecting piece 531 and the rear cover body 52 may be between 80° and 100°. Similarly, the angle between the first connecting piece 531 and the second connecting piece 532 may also be between 80° and 100°.

[0062] like Figure 2 , Figure 3 as well as Figures 11 to 13 As shown, the buckle 81 also includes an elastic clamping arm 812 connected to the connecting portion 811 and a clamping block 813 arranged on the elastic clamping arm 812, and the clamping block 813 is clamped in the clamping slot 82. The clamping block 813 has inclined surfaces on both the front and rear sides. During the installation process, the user aligns the buckle 81 with the position of the clamping slot 82, and the bracket 10 contacts the inclined surface on the front side of the clamping block 813. Under the action of the force applied by the user toward the bracket 10, the elastic clamping arm 812 is deformed, and the buckle 81 moves downward under the drive of the elastic clamping arm 812. Finally, the buckle 81 is clamped in the clamping slot 82, so that the back cover 50 is fixed on the bracket 10.

[0063] like Figure 2 , Figure 3 as well as Figures 11 to 13As shown, the buckle 81 also includes a spring piece 814 disposed on the connecting portion 811, and the spring piece 814 abuts against the bracket 10. After the buckle 81 is installed on the bracket 10, the spring piece 814 can abut against the lower side wall of the upper crossbeam of the bracket 10, which can prevent the rear cover 50 from shaking and ensure the stability between the rear cover 50 and the bracket 10.

[0064] In the description of the present invention, it is necessary to understand that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings. They are only for the convenience of describing the present invention and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the devices or elements referred to must have a specific direction or be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the scope of protection of the present invention. The directional words "inside and outside" refer to the inside and outside relative to the contours of each component itself.

[0065] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0066] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. If not otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of the present invention.

[0067] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An LED display module, characterized in that: include: A bracket (10), the bracket (10) comprising an outer frame (11) and a plurality of cross beams (12) and a plurality of longitudinal beams (13) arranged in the outer frame (11), the plurality of cross beams (12) and the plurality of longitudinal beams (13) being arranged to intersect to form a plurality of accommodating spaces (20), the plurality of accommodating spaces (20) comprising a first accommodating space (21) located in the middle of the bracket (10), a second accommodating space (22) located on a first side of the first accommodating space (21) along a transverse direction, and a third accommodating space (23) located on a second side of the first accommodating space (21) along the transverse direction, the cross-sectional area of ​​the first accommodating space (21) being smaller than the cross-sectional area of ​​the second accommodating space (22), and the cross-sectional area of ​​the first accommodating space (21) being smaller than the cross-sectional area of ​​the third accommodating space (23); An LED light board (30) is arranged on the front side of the bracket (10), the LED light board (30) comprising a module circuit (40), the module circuit (40) comprising a power supply interface (41), a signal interface (42), a first row drive circuit (43), a second row drive circuit (44) and a column drive circuit (45), wherein the power supply interface (41) and the signal interface (42) are arranged corresponding to the first accommodating space (21), the main body of the first row drive circuit (43) and the main body of the column drive circuit (45) are arranged corresponding to the second accommodating space (22), and the main body of the second row drive circuit (44) is arranged corresponding to the third accommodating space (23); A rear cover (50) is arranged on the rear side of the bracket (10); The LED display module further comprises a clamping structure (80) arranged between the bracket (10) and the back cover (50), wherein the clamping structure (80) comprises a buckle (81) arranged separately from the back cover (50) and a clamping slot (82) arranged on the bracket (10); The back cover (50) includes a back cover body (52) and a connecting piece (53) arranged at a first edge of the back cover body (52); the buckle (81) includes a connecting portion (811) connected to the connecting piece (53); the connecting piece (53) includes a first connecting piece (531) connected to the back cover body (52) and perpendicular to the back cover body (52); the connecting portion (811) includes two hooks (8111) arranged opposite to each other; the first connecting piece (531) is clamped between the two hooks (8111).

2. The LED display module according to claim 1, characterized in that: The column driving circuit (45) is located on a side of the first row driving circuit (43) away from the first accommodating space (21).

3. The LED display module according to claim 1, characterized in that: The module circuit (40) further comprises a first signal driving circuit (46) and a second signal driving circuit (47); the first signal driving circuit (46) is arranged corresponding to the second accommodating space (22), and the second signal driving circuit (47) is arranged corresponding to the third accommodating space (23).

4. The LED display module according to claim 2, characterized in that: The plurality of accommodating spaces (20) further include a fourth accommodating space (24) located above the second accommodating space (22) and a fifth accommodating space (25) located below the second accommodating space (22), and the remaining parts of the first row driving circuit (43) are respectively arranged in the fourth accommodating space (24) and the fifth accommodating space (25); The plurality of accommodating spaces (20) further include a sixth accommodating space (26) located above the third accommodating space (23) and a seventh accommodating space (27) located below the third accommodating space (23), and the remaining parts of the second row driving circuit (44) are respectively arranged in the sixth accommodating space (26) and the seventh accommodating space (27).

5. The LED display module according to claim 1, characterized in that: A reinforcing rib (51) is provided on one side of the rear cover (50) facing the bracket (10), the reinforcing rib (51) comprising a plurality of transverse reinforcing ribs (511) and a plurality of vertical reinforcing ribs (512), the plurality of transverse reinforcing ribs (511) and the plurality of vertical reinforcing ribs (512) being arranged in a staggered manner; A first component layout area (31) and a second component layout area (32) are arranged on the rear side of the LED light board (30); the height of the components in the first component layout area (31) is greater than the height of the components in the second component layout area (32); the second component layout area (32) is arranged corresponding to the position of the reinforcing rib (51) on the rear cover (50); and the first component layout area (31) corresponds to the position of the rear cover (50) other than the reinforcing rib (51).

6. The LED display module according to claim 1, characterized in that: The LED display module further comprises an adhesive layer (60) arranged between the LED light board (30) and the bracket (10), wherein the LED light board (30) is bonded to the bracket (10) via the adhesive layer (60); the adhesive layer (60) comprises a first adhesive layer (61) arranged on the outer frame (11) and a second adhesive layer (62) arranged on the cross beam (12) and on the longitudinal beam (13), wherein the second adhesive layer (62) comprises a plurality of sections arranged at intervals to avoid the intersection of the cross beam (12) and the longitudinal beam (13).

7. The LED display module according to claim 1, characterized in that: The number of the crossbeams (12) is two, the distance between the two crossbeams (12) is a first distance A1, the distance between each crossbeam (12) and the adjacent outer frame (11) is a second distance A2, and the ratio A1 / A2 between the first distance A1 and the second distance A2 satisfies: 0.5≤A1 / A2≤0.8; and / or The number of the longitudinal beams (13) is two, the distance between the two longitudinal beams (13) is a third distance B1, the distance between each longitudinal beam (13) and the adjacent outer frame (11) is a fourth distance B2, and the ratio B1 / B2 between the third distance B1 and the fourth distance B2 satisfies: 1.8≤B1 / B2≤2.

4.

8. The LED display module according to claim 1, characterized in that: An insulating coating (33) is provided on the rear side of the LED light board (30) at a position corresponding to the bracket (10).

9. The LED display module according to claim 1, characterized in that: The distance between the IC chip (70) in the module circuit (40) and the outer frame (11), the crossbeam (12) and the longitudinal beam (13) is greater than 2 mm.

10. The LED display module according to claim 1, characterized in that: The LED display module further comprises a plug-in structure (90) arranged between a second edge of the rear cover (50) body and the bracket (10), wherein the first edge and the second edge are arranged opposite to each other.

11. The LED display module according to claim 10, characterized in that: The connecting piece (53) further comprises a second connecting piece (532) connected to the first connecting piece (531) and perpendicular to the first connecting piece (531); the connecting portion (811) further comprises a slot (8112) arranged between the two hooks (8111), and a portion of the second connecting piece (532) is inserted into the slot (8112); the second connecting piece (532) comprises a first sheet body (5321) and a second sheet body (5322) connected to each other, the first sheet body (5321) is connected to the first connecting piece (531), the width of the first sheet body (5321) is greater than the width of the second sheet body (5322), and the second sheet body (5322) is inserted into the slot (8112).

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