LED display module

Abstract

The utility model discloses an LED display module. The LED display module comprises a box body, an LED lamp panel connected with the box body and a mounting mechanism used for fixing the LED lamp panel to the box body. Wherein the mounting mechanism is arranged between the box body and the LED lamp panel, the LED lamp panel is provided with a first maintenance channel allowing a maintenance tool to enter, the box body is provided with a second maintenance channel allowing the maintenance tool to enter, and clamping mechanisms used for being meshed with the maintenance tool are arranged in the directions, facing the first maintenance channel and the second maintenance channel, of the mounting mechanism. Through the arrangement, the maintenance tool can act on the mounting mechanism along the first maintenance channel or the second maintenance channel so as to realize assembly and disassembly between the LED lamp panel and the box body, and particularly in a complex maintenance environment, the convenience of maintenance of the LED display module is improved.

Description

Technical Field

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

[0002] Among the existing LED display products, the LED display light board maintenance solutions launched by various manufacturers generally adopt the following structure: (1) The LED display light board is connected to the box body by bolts. Since the LED display light board is often set at a high position, it is not easy to operate at high altitude through bolt connection, and it is difficult to maintain the LED display light board from the front and back sides. (2) The LED display light board is connected to the box body by a rotating buckle. Although this solution can maintain the LED display light board from both sides, it is not stable enough and has a greater risk of falling off. (3) The LED display light board is connected to the box body by magnets. This method can maintain the LED light board from both sides, but it often requires carrying tools such as vacuum suction cups with large volume and complex structure for front maintenance, which is not conducive to high-altitude operations. In addition, the suction force of the magnet is limited, which makes the LED light board module have a great risk of falling off. Utility Model Content

[0003] In order to solve the deficiencies of the prior art, the purpose of the present application is to provide an LED display module that is easy to maintain and has high stability.

[0004] To achieve the above objectives, this application adopts the following technical solutions:

[0005] An LED display module comprises: a box, an LED light board connected to the box, and a mounting mechanism for fixing the LED light board to the box, so that the LED light board and the box are relatively fixed; wherein the LED light board has a first maintenance channel for maintenance tools to enter, the box has a second maintenance channel for maintenance tools to enter, the mounting mechanism is arranged between the first maintenance channel and the second maintenance channel, and the mounting mechanism is provided with a locking structure for engaging the maintenance tool in the direction of the first maintenance channel and the second maintenance channel.

[0006] Furthermore, the LED light board has a receiving groove opening toward the box body, at least a portion of the mounting mechanism is disposed in the receiving groove and fixed to the LED light board, and the receiving groove is communicated with the first maintenance channel.

[0007] Furthermore, the LED display module also includes an elastic member arranged in the accommodating groove, and the elastic member abuts against the mounting mechanism along the direction from the LED light board to the box body.

[0008] Furthermore, the LED light board includes: a circuit board; a back cover, which is arranged behind the circuit board and forms a sealed space for accommodating electrical components between the back cover and the circuit board; a seal, which is arranged between the circuit board and the back cover, and passes through from the circuit board to the back cover to form a first maintenance channel, and the first maintenance channel is isolated from the sealed space by the seal.

[0009] Furthermore, two ends of the sealing member are sealedly connected to the circuit board and the back cover respectively, and the sealed connection includes at least one of the following connection modes: interference connection, packing seal connection, and threaded connection.

[0010] Furthermore, the installation mechanism is basically distributed in the diagonal area and the outer edge area of ​​the LED light board. The installation mechanism includes a fixed pressure plate and a fixing bolt passing through the fixed pressure plate. The fixed pressure plate is fixedly connected to the LED light board, and the clamping structure is respectively arranged at both ends of the fixing bolt.

[0011] Furthermore, the first maintenance channel and the second maintenance channel are cylindrical channels, wherein the axes of the first maintenance channel, the second maintenance channel and the fixing bolt substantially coincide.

[0012] Furthermore, the LED lamp board has a receiving groove opening toward the box body, the receiving groove is communicated with the first maintenance channel, at least a portion of the fixing bolt is disposed in the receiving groove and is gap-matched with an inner wall of the receiving groove.

[0013] Further, the fixing bolt includes a first part and a second part which are arranged relatively to each other, the radial length of the first part is greater than the radial length of the second part, the second part passes through the fixed pressure plate and is gap-matched with the fixed pressure plate, and the first part abuts against the fixed pressure plate along the axial direction of the fixing bolt, wherein the length of the first part extending along the axial direction of the fixing bolt is less than the length of the accommodating groove extending along the axial direction of the fixing bolt.

[0014] Furthermore, the fixed pressure plate is basically rhombus-shaped, and has a through hole for the fixing bolt to pass through, and both sides of the through hole are provided with fixing grooves recessed in the direction of the LED light board, and the fixing grooves are located on the same side end surface of the fixed pressure plate. The mounting mechanism also includes fasteners, which pass through the fixing grooves to fix the mounting mechanism to the LED light board. The end surface of the fixed pressure plate facing away from the LED light board is coplanar with the end surface of the LED light board facing the box body.

[0015] The LED display module improves the convenience of LED light board maintenance by respectively setting a first maintenance channel and a second maintenance channel on the LED light board and a box body, and respectively setting a locking structure that can engage with maintenance tools at both ends of the installation mechanism for fixing the LED light board. At the same time, the LED light board and the box body connected by the above-mentioned installation mechanism have good stability. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the structure of the LED display module in the embodiment of the present application;

[0017] Figure 2 A cross-sectional view of a portion of the structure of an LED display module in an embodiment of the present application;

[0018] Figure 3 In the embodiment of this application Figure 2 A magnified image of point A;

[0019] Figure 4 This is a back view of the LED light board in the embodiment of the present application;

[0020] Figure 5 This is a cross-sectional view of a portion of the structure of the LED light board in the embodiment of the present application;

[0021] Figure 6 This is a structural schematic diagram of the installation mechanism in the embodiment of the present application;

[0022] Figure 7 This is a maintenance diagram of the first LED display module in the embodiment of the present application;

[0023] Figure 8 This is a maintenance diagram of the second LED display module in the embodiment of the present application. DETAILED DESCRIPTION

[0024] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the specific implementation manner of the present application will be clearly and completely described below in conjunction with the drawings in the implementation manner of the present application.

[0025] like Figure 1 As shown, the embodiment provided by the present application includes an LED display module 100, and the LED display module 100 includes:

[0026] A box body 11, an LED light board 12 connected to the box body 11, and a mounting mechanism 13 for fixing the LED light board 12 to the box body 11, wherein the LED light board 12 and the box body 11 are kept relatively fixed by the mounting mechanism 13.

[0027] like Figure 2 and Figure 3 As shown, the LED light board 12 has a first maintenance passage 121 extending in the front-to-back direction, and the maintenance tool 200 can pass through the LED light board 12 along the first maintenance passage 121 and act on the mounting mechanism 13. The maintenance tool 200 is operated to loosen the mounting mechanism 13 to remove the LED light board 12 from the box body 11, or to pre-tighten the mounting mechanism 13 to fix the LED light board 12 to the box body 11.

[0028] The housing 11 has a second maintenance passage 111 extending in the front-to-back direction, and the maintenance tool 200 can pass through the housing 11 along the second maintenance passage and act on the mounting mechanism 13. The maintenance tool 200 is operated to loosen the mounting mechanism 13 to remove the LED light board 12 from the housing 11, or to pre-tighten the mounting mechanism 13 to fix the LED light board 12 to the housing 11.

[0029] In this embodiment, the mounting mechanism 13 is provided with a latching structure 131 for engaging the maintenance tool 200 at both ends thereof facing the first maintenance channel 121 and the second maintenance channel 111. The latching structure 131 facing the first maintenance channel 121 is recessed toward the side away from the LED light board 12, so as to engage the maintenance tool 200 inserted from the first maintenance channel 121. Similarly, the latching structure 131 facing the second maintenance channel 111 is recessed toward the side away from the box body 11, so as to engage the maintenance tool 200 inserted from the second maintenance channel 111.

[0030] Exemplarily, the locking structure 131 includes, but is not limited to, the following shapes: hexagonal, straight, polygonal, etc. Any mounting mechanism 13 having a locking structure 131 of a different shape is adapted to be equipped with a corresponding maintenance tool 200 .

[0031] The LED display module 100 includes a plurality of independent LED light panels 12, such as Figure 4 , a back view of one of the LED light boards 12 is shown. A number of mounting mechanisms 13 are provided on the side of the LED light board 12 facing the box body 11, and the mounting mechanisms 13 are basically distributed in the diagonal area 101 of the LED light board 12 and the outer edge area 102 of the LED light board 12, so as to improve the stability of the LED light board 12 when connected to the box body 11.

[0032] like Figure 5 As shown, as an implementation, the LED light board 12 has a receiving groove 122 with an opening toward the box body 11, and at least a portion of the mounting mechanism 13 is disposed in the receiving groove 122. When the mounting mechanism 13 is disposed in the receiving groove 122, at least a portion of the mounting mechanism 13 is also fixedly connected to the LED light board 12, so that the mounting mechanism 13 and the LED light board 12 form an integral component. When the end of the mounting mechanism 13 facing away from the LED light board 12 is connected to the box body 11, the LED light board 12 is fixed to the box body 11 by pre-tightening the mounting mechanism 13.

[0033] Specifically, the opening of the receiving groove 122 faces the box body 11, and the side of the receiving groove 122 facing away from the box body 11 is connected to the first maintenance channel 121. The maintenance tool 200 enters the receiving groove 122 along the first maintenance channel 121 and engages with the locking mechanism of the installation mechanism 13, and then the installation mechanism 13 is loosened or pre-tightened by manipulating the maintenance tool 200.

[0034] like Figure 5 As shown, as an implementation, the LED lamp board 12 includes a circuit board 123 and a back cover 124, and the back cover 124 is arranged behind the circuit board 123, so that a sealed space 125 for accommodating electrical components is formed between the back cover 124 and the circuit board 123. It should be noted that a number of LED lamp beads are arranged on the circuit board 123, and the LED lamp beads are arranged on the side of the circuit board 123 away from the back cover 124, and are electrically connected to the electrical components in the sealed space 125.

[0035] In order to ensure the sealing effect of the sealed space 125 , the LED lamp board 12 further includes a sealing member 126 disposed between the circuit board 123 and the back cover 124 .

[0036] The seal 126 is a hollow tubular member, and the seal 126 passes through the circuit board 123 to the rear cover 124 to form the first maintenance channel 121. The two ends of the seal 126 are sealed with the circuit board 123 and the rear cover 124, respectively, so that the first maintenance channel 121 is isolated from the sealed space 125 by the seal 126.

[0037] It is understandable that since the electrical components are arranged in the sealed space 125, the sealed space 125 has certain waterproof and dustproof requirements, but in order to enable the LED display module 100 to be maintained in the front and rear directions, it is necessary to set a first maintenance channel 121 that allows the maintenance tool 200 to enter from the LED light board 12 to the box body 11. Therefore, through the sealing member 126, while establishing the first maintenance channel 121, it is also ensured that the LED light board 12 has good sealing performance.

[0038] Exemplarily, two ends of the sealing member 126 are sealedly connected to the circuit board 123 and the back cover 124 respectively, and the sealed connection includes at least one of the following connection modes: interference connection, packing seal connection, and threaded connection.

[0039] The LED light board 12 is provided with a number of mounting mechanisms 13 to ensure the connection strength between the LED light board 12 and the box 11. Therefore, the LED light board 12 is provided with a corresponding number of sealing members 126 to form a first maintenance channel 121 matching the number of mounting mechanisms 13.

[0040] Compared with the prior art, since the area where the LED display module 100 is set is generally higher, it may be inconvenient to adjust and maintain. The LED display module 100 set up above has a mounting mechanism 13 that can be adjusted forward and backward, which is convenient for disassembling the LED light board 12 in a complex environment, or adjusting the horizontality of the LED light board 12.

[0041] In addition, when the circuit board 123 is connected to the back cover 124 , the seal 126 can also be reused as a positioning member, and the back cover 124 is aligned with the circuit board 123 in the axial direction of the seal 126 to improve the assembly efficiency of the LED light board 12 .

[0042] like Figure 6 As shown, further, the LED display module 100 also includes an elastic member 14, which is disposed in the receiving groove 122, and the elastic member 14 abuts against the mounting mechanism 13 and applies an elastic force to the mounting mechanism 13 along the direction from the LED light board 12 to the box body 11.

[0043] Exemplarily, the elastic member 14 may be a compression spring, a butterfly spring, a coil spring, or the like.

[0044] The elastic member 14 disposed in the receiving groove 122 applies an elastic force to the mounting mechanism 13 in the direction from the LED light board 12 to the box body 11, so that the maintenance personnel can operate more labor-saving during the pre-tightening process of the mounting mechanism 13. In addition, the elastic force applied by the elastic member 14 to the mounting mechanism 13 can also improve the stability of the connection between the LED light board 12 and the box body 11, and prevent the mounting mechanism 13 from loosening under the influence of the environment.

[0045] like Figure 6 As shown, as an implementation method, the mounting mechanism 13 includes a fixed pressure plate 132 and a fixing bolt 133 passing through the fixed pressure plate 132 , the fixed pressure plate 132 is fixedly connected to the LED light board 12 , and the locking structure 131 is respectively arranged at both ends of the fixing bolt 133 .

[0046] Exemplarily, when the mounting mechanism 13 is disposed on the LED light board 12, the fixed pressure plate 132 remains relatively fixed with the LED light board 12, the fixing bolt 133 passes through the fixed pressure plate 132, one end of the fixing bolt 133 presses against the fixed pressure plate 132 along the direction from the LED light board 12 to the box body 11, and the other end of the fixing bolt 133 is threadedly connected to the box body 11.

[0047] The maintenance tool 200 engages with the locking structure 131 of the fixing bolt 133 along the first maintenance passage 121 or the second maintenance passage 111 to pre-tighten or loosen the fixing bolt 133 .

[0048] Specifically, the first maintenance channel 121 and the second maintenance channel 111 are cylindrical channels, wherein the axes of the first maintenance channel 121, the second maintenance channel 111 and the fixing bolt 133 substantially coincide with each other.

[0049] Furthermore, at least a portion of the fixing bolt 133 is disposed in the receiving groove 122 and is clearance-matched with an inner wall of the receiving groove 122 .

[0050] like Figure 6As shown, the fixing bolt 133 includes a first portion 1331 and a second portion 1332 that are arranged opposite to each other, and the radial length of the first portion 1331 is greater than the radial length of the second portion 1332. When the fixing bolt 133 is connected to the fixing plate 132, the second portion 1332 passes through the through hole 1321 of the fixing plate 132 and is clearance-matched with the fixing plate 132, and because the radial length of the first portion 1331 is greater than the radial length of the through hole 1321, the fixing plate 132 limits the first portion 1331 in the axial direction of the fixing bolt 133. When the LED light board is connected to the box body 11 through the mounting mechanism, the first portion 1331 abuts against the fixing plate 132 in the axial direction of the fixing bolt 133.

[0051] In the radial direction of the fixing bolt 133, there is space for the first part 1331 to move between the first part 1331 and the inner wall of the receiving groove 122, so as to avoid wear of the first part 1331 and the inner wall of the receiving groove 122 when pre-tightening or loosening the fixing bolt 133, and the length of the first part 1331 extending along the axial direction of the fixing bolt 133 is smaller than the length of the receiving groove 122 extending along the axial direction of the fixing bolt 133.

[0052] It should be noted that the difference between the length of the receiving groove 122 and the length of the first portion 1331 is the length of the fixing bolt 133 embedded in the box body 11. If the length of the receiving groove 122 is too long, the receiving groove 122 will occupy too much of the sealed space 125, thereby affecting the layout of the electrical components in the sealed space 125. If the length of the receiving groove 122 is too short, there is a possibility that the connection stability between the LED light board 12 and the box body 11 will be reduced.

[0053] like Figure 5 As shown, as an optional implementation, when the mounting mechanism 13 is disposed on the LED light board 12 , the end surface of the fixed pressure plate 132 facing away from the LED light board 12 is coplanar with the end surface of the LED light board 12 facing the box body 11 .

[0054] Specifically, the LED lamp board 12 has a limiting groove 127 which is connected to the space of the containing groove 122 , and the limiting groove 127 is arranged on a side of the containing groove 122 away from the first maintenance channel 121 .

[0055] The inner contour of the limiting groove 127 is substantially consistent with the outer contour of the fixed pressing plate 132 , and the fixed pressing plate 132 is effectively positioned during the connection process between the mounting mechanism 13 and the LED lamp board 12 .

[0056] Through the above arrangement, when the fixed pressing plate 132 is disposed in the limiting groove 127, the end surface of the fixed pressing plate 132 facing away from the LED light board 12 is coplanar with the end surface of the LED light board 12 facing the box body 11. When the LED light board 12 is fastened to the box body 11 through the mounting mechanism 13, a gap between the LED light board 12 and the box body 11 due to a process error of the fixed pressing plate 132 can be avoided, thereby improving the flatness of the LED light board 12.

[0057] like Figure 6 As shown, in the example of the present application, the shape of the fixed plate 132 is basically a rhombus, and the fixed plate 132 has a through hole 1321 for the fixing bolt 133 to pass through. The two sides of the through hole 1321 are provided with a fixing groove 1322 that is recessed in the direction of the LED light board 12, and the fixing groove 1322 is arranged on the same side end surface of the fixed plate 132. Further, the fixing groove 1322 is recessed in the direction of the LED light board 12. When the mounting structure 13 is connected to the LED light board 12 through the fastener 1323, the fastener 1323 passes through the fixing groove 1322, and the head of the fastener 1323 is located in the fixing groove 1322, so as to apply a pre-tightening force in the direction of the LED light board 12 to the fixed plate 132. By providing the fixing groove 1322 that is recessed in the direction of the LED light board 12, the head of the fastener 1323 is prevented from interfering with the box body 11, so as to ensure the flatness of the LED light board 12 after installation.

[0058] like Figure 7 As shown, an embodiment of the present application provides a schematic diagram of a maintenance tool 200 entering the accommodating groove 122 along the first maintenance channel 121 and engaging the mounting mechanism 13, and operating on the front side of the LED light board 12 to remove the LED light board 12 from the box body 11.

[0059] like Figure 8 As shown, the embodiment of the present application also provides a schematic diagram of a maintenance tool 200 engaging the mounting mechanism 13 along the second maintenance channel 111, and operating at the rear side of the box body 11 to remove the LED light board 12 from the box body 11. According to the above content, since the mounting mechanism 13 is distributed in the diagonal area 101 of the LED light board 12 and the outer edge area 102 of the LED light board 12, the box body 11 forms a hollow part 112 (see Figure 7 ), and a gripping portion 128 for maintenance personnel to grasp is installed on the side of the LED light board 12 facing the box body 11. When the maintenance personnel are working on the rear side of the box body 11, the maintenance tool 200 engages and releases the mounting mechanism 13 along the second maintenance channel 111 to separate the LED light board 12 from the box body 11, and rotates the LED light board 12 so that the LED light board 12 can pass through the hollow portion 112, thereby realizing the removal of the LED light board 12.

[0060] Through the above arrangement, the LED display module 100 can be maintained from both the front and rear sides, thereby improving the convenience of maintaining the LED display module 100 , and the box body 11 and the LED light board are connected through the above installation mechanism 13 , so that the LED display module 100 has higher stability.

[0061] The present application also provides another embodiment, and the LED display module of another embodiment includes:

[0062] A box body, an LED light panel connected to the box body, and a mounting mechanism for fixing the LED light panel to the box body.

[0063] The LED light board has a first maintenance channel extending in the front-to-back direction, and the maintenance tool can pass through the LED light board along the first maintenance channel and act on the mounting mechanism. The LED light board can be removed from the box by operating the maintenance tool to loosen the mounting mechanism, or the LED light board can be fixed to the box by operating the maintenance tool to pre-tighten the mounting mechanism.

[0064] The box body has a second maintenance passage extending in the front-to-back direction, and a maintenance tool can pass through the box body along the second maintenance passage and act on the mounting mechanism. The LED light board can be removed from the box body by operating the maintenance tool to loosen the mounting mechanism, or the LED light board can be fixed to the box body by operating the maintenance tool to pre-tighten the mounting mechanism.

[0065] In the example of the present application, both ends of the installation mechanism facing the first maintenance channel and the second maintenance channel are provided with a locking structure for engaging the maintenance tool.

[0066] As an implementation method, the box body has a receiving groove with an opening toward the LED light board, and at least part of the mounting mechanism is arranged in the receiving groove. When the mounting mechanism is arranged in the receiving groove, the mounting mechanism is fixedly connected to the box body so that the mounting mechanism and the box body form an integral component. When the end of the mounting mechanism facing away from the box body is connected to the LED light board, the LED light board and the box body are fixed by pre-tightening the mounting mechanism.

[0067] Specifically, the receiving groove provided in the box body is communicated with the second maintenance channel, and the maintenance tool enters the receiving groove along the second maintenance channel and engages with the locking mechanism of the installation mechanism, thereby enabling the installation mechanism to be loosened or pre-tightened.

[0068] In summary, by respectively setting the first maintenance channel and the second maintenance channel on the LED light board and the box body, the mounting mechanism is provided with a latching structure for engaging the maintenance tool at the ends of the two maintenance channels, so that the LED display module can be maintained in the front and back directions, thereby improving the maintenance efficiency. Moreover, compared with the existing connection method, the bolt fastening method is easier to load and unload and has higher stability.

[0069] It should be understood that those skilled in the art can make improvements or changes based on the above description, and all these improvements and changes should fall within the scope of protection of the claims attached to this application.

Claims

1. An LED display module, characterized in that: include: A box, an LED light board connected to the box, and a mounting mechanism for fixing the LED light board to the box, so that the LED light board and the box are relatively fixed; Among them, the LED light panel has a first maintenance channel for maintenance tools to enter, the box body has a second maintenance channel for maintenance tools to enter, the installation mechanism is arranged between the first maintenance channel and the second maintenance channel, and the installation mechanism is provided with a locking structure for engaging the maintenance tool in the direction of the first maintenance channel and the second maintenance channel.

2. The LED display module according to claim 1, characterized in that: The LED light board has a receiving groove opening toward the box body, at least a portion of the mounting mechanism is disposed in the receiving groove and fixed to the LED light board, and the receiving groove is communicated with the first maintenance channel.

3. The LED display module according to claim 2, characterized in that: The LED display module also includes an elastic member arranged in the accommodating groove, and the elastic member abuts against the mounting mechanism along the direction from the LED light board to the box body.

4. The LED display module according to claim 1, characterized in that: The LED light board comprises: Circuit boards; A rear cover, the rear cover is arranged behind the circuit board and forms a sealed space for accommodating electrical components between the rear cover and the circuit board; A sealing member is provided between the circuit board and the rear cover, the sealing member penetrates from the circuit board to the rear cover to form the first maintenance channel, and the first maintenance channel is isolated from the sealed space by the sealing member.

5. The LED display module according to claim 4, characterized in that: The two ends of the sealing member are respectively sealed with the circuit board and the back cover, and the sealed connection includes at least one of the following connection modes: interference connection, packing seal connection, and threaded connection.

6. The LED display module according to claim 1, characterized in that: The mounting mechanism is basically distributed in the diagonal area of ​​the LED light board and the outer edge area of ​​the LED light board. The mounting mechanism includes a fixed pressure plate and a fixing bolt passing through the fixed pressure plate. The fixed pressure plate is fixedly connected to the LED light board, and the locking structure is respectively arranged at both ends of the fixing bolt.

7. The LED display module according to claim 6, characterized in that: The first maintenance channel and the second maintenance channel are cylindrical channels, wherein the axes of the first maintenance channel, the second maintenance channel and the fixing bolt substantially coincide with each other.

8. The LED display module according to claim 6, characterized in that: The LED lamp board has a receiving groove opening toward the box body, the receiving groove is communicated with the first maintenance channel, at least a portion of the fixing bolt is disposed in the receiving groove and is gap-matched with an inner wall of the receiving groove.

9. The LED display module according to claim 8, characterized in that: The fixing bolt includes a first part and a second part arranged opposite to each other, the radial length of the first part is greater than the radial length of the second part, the second part passes through the fixing pressure plate and is gap-matched with the fixing pressure plate, and the first part abuts against the fixing pressure plate along the axial direction of the fixing bolt, wherein the length of the first part extending along the axial direction of the fixing bolt is less than the length of the accommodating groove extending along the axial direction of the fixing bolt.

10. The LED display module according to claim 6, characterized in that: The fixed pressure plate is basically rhombus-shaped, and has a through hole for the fixing bolt to pass through, and both sides of the through hole are provided with fixing grooves recessed in the direction of the LED light board, and the fixing grooves are located on the same side end surface of the fixed pressure plate. The mounting mechanism also includes a fastener, and the fastener passes through the fixing groove to fix the mounting mechanism to the LED light board. The end surface of the fixed pressure plate facing away from the LED light board is coplanar with the end surface of the LED light board facing the box body.

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