An outdoor LED display module

Abstract

This utility model discloses an outdoor LED display module, including a base shell, a plastic bracket and a PCB board sequentially disposed inside the base shell, and a display cover for covering the PCB board. The base shell is an integral die-cast structure. A driver chip is disposed on the side of the PCB board facing the base shell, and a light-emitting unit is disposed on the side of the PCB board facing the display cover. A thermally conductive potting layer is disposed between the PCB board and the base shell, and the driver chip is in close contact with the thermally conductive potting layer. A sealing potting layer for covering the light-emitting unit is disposed between the display cover and the PCB board. This invention solves the problems of insufficient sealing, unreasonable heat dissipation, low compressive strength, and inconvenient maintenance of existing outdoor LED displays.

Description

Technical Field

[0001] This utility model relates to the field of LED display technology, and in particular to an outdoor LED display module. Background Technology

[0002] With the widespread application of LED displays in outdoor advertising, traffic information, sports venues, and urban lighting, higher requirements are placed on the protection performance of display modules. Existing outdoor LED display modules generally suffer from the following problems:

[0003] (1) Insufficient sealing: Traditional modules use ordinary plastic shells or simple waterproof structures, which cannot effectively resist the intrusion of rainwater, dust and corrosive gases.

[0004] (2) Inadequate heat dissipation design: Although some sealed structures have certain dustproof and waterproof capabilities, they neglect heat dissipation requirements, resulting in increased LED chip temperature, which affects display effect and service life.

[0005] (3) Inconvenient maintenance: Once water gets in or a malfunction occurs, disassembly and repair are complicated and maintenance costs are high.

[0006] (4) Low compressive strength: The structure is easily deformed or even damaged in outdoor wind and sun conditions. Utility Model Content

[0007] To address the shortcomings of the existing technology, this utility model provides an outdoor LED display module to solve the problems of insufficient sealing, unreasonable heat dissipation, low compressive strength, and inconvenient maintenance of existing outdoor LED displays.

[0008] This utility model is achieved using the following technical solution:

[0009] An outdoor LED display module includes a base shell, a plastic bracket and a PCB board sequentially disposed inside the base shell, and a display mask for covering the PCB board. The base shell is an integral die-cast structure. A driver chip is provided on the side of the PCB board facing the base shell, and a light-emitting unit is provided on the side of the PCB board facing the display mask. A thermally conductive potting layer is provided between the PCB board and the base shell. The driver chip is in close contact with the thermally conductive potting layer. A sealing potting layer for covering the light-emitting unit is provided between the display mask and the PCB board.

[0010] Furthermore, the thermally conductive potting layer is made of thermally conductive silicone grease.

[0011] Furthermore, the sealing and potting layer is made of epoxy resin.

[0012] Furthermore, the bottom shell is made of aluminum alloy.

[0013] Furthermore, it also includes a first fastener, and the inner side of the bottom shell is provided with a plurality of first fixing posts. The first fixing posts have first fastening holes, and the plastic bracket is provided with fixing through holes corresponding to the positions of the first fixing posts. The first fastener passes through the fixing through holes and is fastened in the first fastening holes.

[0014] Furthermore, it also includes a second fastener. The plastic bracket is provided with a plurality of second fixing posts. The second fixing posts have second fastening holes. The PCB board is provided with a first connecting through hole for the second fixing posts to pass through at the corresponding positions. The display mask is provided with a second connecting through hole at the corresponding positions of the first connecting through hole. The second fixing posts pass through the first connecting through hole and extend into the second connecting through hole. The second fastener passes through the second connecting through hole and is fastened in the second fastening hole.

[0015] Furthermore, the back of the bottom shell is provided with multiple heat dissipation fins.

[0016] Furthermore, a latch is provided on the back of the bottom shell.

[0017] Furthermore, a power supply signal mounting slot is provided on the back of the bottom shell, and a plastic waterproof cover plate is disposed in the power supply signal mounting slot. A first waterproof rubber ring is provided between the outer side wall of the plastic waterproof cover plate and the power supply signal mounting slot, and a second waterproof rubber ring is provided at the bottom of the plastic waterproof cover plate.

[0018] Furthermore, the outer periphery of the bottom shell is provided with a 45-degree bevel.

[0019] Compared with the prior art, the beneficial effects of this utility model include at least the following:

[0020] This invention achieves an IP66 protection rating for its outdoor LED display module by incorporating a thermally conductive potting layer and a sealing potting layer. This effectively prevents the intrusion of rain, dust, and salt spray, enabling it to withstand harsh environments. The driver chip is positioned close to the thermally conductive potting layer, allowing heat to be transferred to the base surface, ensuring the stability of the driver chip during long-term operation. The base shell utilizes a die-cast structure, providing excellent pressure and impact resistance, and adapting to extreme weather conditions. This display module features a compact structure, strong sealing, good heat dissipation, and ease of maintenance, significantly improving the product's protection level and lifespan, making it particularly suitable for long-term stable operation in various complex outdoor environments. Attached Figure Description

[0021] Figure 1 This is an exploded view of the outdoor LED display module according to an embodiment of the present invention;

[0022] Figure 2 This is a top view of the outdoor LED display module according to an embodiment of the present invention;

[0023] Figure 3 for Figure 2 Sectional view at point AA;

[0024] Figure 4 for Figure 2 Sectional view at point BB;

[0025] Figure 5 This is a schematic diagram of the back of the bottom shell according to an embodiment of the present invention;

[0026] Figure 6 This is a schematic diagram of the interior of the bottom shell according to an embodiment of the present invention;

[0027] Figure 7 This is a schematic diagram of the plastic bracket according to an embodiment of the present utility model;

[0028] In the diagram: 1. Bottom shell; 11. First fixing post; 12. Heat dissipation fins; 13. Locking buckle; 14. Power supply and signal mounting slot; 15. Handle; 16. Bevel; 2. Plastic bracket; 21. Fixing through hole; 22. Second fixing post; 3. PCB board; 31. Driver chip; 4. Display mask; 41. Second connection through hole; 5. Thermally conductive potting layer; 6. Sealing potting layer; 7. Plastic waterproof cover plate; 8. First waterproof rubber ring; 9. Second waterproof rubber ring. Detailed Implementation

[0029] Exemplary embodiments will now be described more fully with reference to the accompanying drawings. However, these exemplary embodiments can be implemented in many forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided to make the present invention more comprehensive and complete, and to fully convey the concept of the exemplary embodiments to those skilled in the art. The same reference numerals in the drawings denote the same or similar structures, and therefore repeated descriptions of them will be omitted.

[0030] The terms used to describe position and direction in this utility model are illustrated with the accompanying drawings, but changes can be made as needed, and all such changes are included within the scope of protection of this utility model.

[0031] like Figures 1 to 7As shown, this utility model provides an outdoor LED display module, including a base shell 1, a plastic bracket 2 and a PCB board 3 sequentially disposed inside the base shell 1, and a display mask 4 for covering the PCB board 3. The base shell 1 is an integral die-cast structure. A driver chip 31 is provided on the side of the PCB board 3 facing the base shell 1, and a light-emitting unit is provided on the side of the PCB board 3 facing the display mask 4. A thermally conductive potting layer 5 is provided between the PCB board 3 and the base shell 1, and the driver chip 31 is in close contact with the thermally conductive potting layer 5. A sealing potting layer 6 for covering the light-emitting unit is provided between the display mask 4 and the PCB board 3.

[0032] In this embodiment, the base shell 1 is an integral die-cast structure, featuring high precision, high strength, resistance to deformation, and strong thermal conductivity. This gives the outdoor LED display module excellent pressure and impact resistance, adapting to extreme weather conditions. A thermally conductive potting layer 5 is placed between the PCB board 3 and the base shell 1, with the driver chip 31 in close contact with the thermally conductive potting layer 5. This allows the heat from the driver chip 31 to be quickly transferred to the base shell 1 through the thermally conductive potting layer 5, enabling the PCB board 3 to dissipate heat rapidly and ensuring stability during long-term operation. It also effectively provides waterproofing and dustproofing. After the PCB board 3 is fixed, a sealing potting layer 6 is applied to the surface of the light-emitting unit. The sealing potting layer 6 primarily serves to waterproof and dustproof. Once the sealing potting layer 6 is dry, several display masks 4 are assembled. The display masks 4 can be made of a plastic material with strong UV resistance and resistance to high and low temperatures to protect the light-emitting units on the PCB board 3 and prevent damage to their lifespan in harsh environments.

[0033] This invention, by setting a thermally conductive potting layer 5 and a sealing potting layer 6, ensures that the outdoor LED display module achieves an IP66 protection rating, effectively preventing the intrusion of rainwater, dust, and salt spray, and enabling it to withstand use in harsh environments. The heat source of the driver chip 31 is placed close to the thermally conductive potting layer 5, allowing heat to be transferred to the surface of the base shell 1, ensuring the stability of the driver chip 31 during long-term operation. The base shell 1 adopts a die-cast structure, possessing excellent pressure and impact resistance, and adapting to extreme weather conditions. This display module features a compact structure, strong sealing, good heat dissipation, and easy maintenance, significantly improving the product's protection level and service life, enhancing its market competitiveness and application expansion space. It is particularly suitable for long-term stable operation in various complex outdoor environments, especially for urban lighting, traffic information display, sports stadiums, outdoor advertising, and other fields.

[0034] It should be noted that the light-emitting unit can be an LED or a light-emitting diode.

[0035] In a preferred embodiment, the thermally conductive potting layer 5 is made of thermally conductive silicone grease. Of course, in other embodiments, the thermally conductive potting layer 5 may also be made of silicone thermally conductive adhesive or thermally conductive silicone gel.

[0036] In a preferred embodiment, the sealing and potting layer 6 is made of epoxy resin. Of course, in other embodiments, the sealing and potting layer 6 may also be made of polyurethane.

[0037] In a preferred embodiment, the bottom shell 1 is made of aluminum alloy. The bottom shell 1 is integrally die-cast from high-strength aluminum alloy, featuring high precision, high strength, resistance to deformation, and strong thermal conductivity. Of course, in other embodiments, the bottom shell 1 can also be made of other high-strength materials.

[0038] In a preferred embodiment, a first fastener is also included. The inner side of the bottom shell 1 is provided with a plurality of first fixing posts 11, each having a first fastening hole. The plastic bracket 2 has a fixing through hole 21 corresponding to the position of the first fixing post 11. The first fastener passes through the fixing through hole 21 and is fastened within the first fastening hole. In this embodiment, this makes the bottom shell 1 and the plastic bracket 2 easy to assemble and disassemble.

[0039] In a preferred embodiment, a second fastener is also included. The plastic bracket 2 is provided with a plurality of second fixing posts 22, each of which has a second fastening hole. The PCB board 3 is provided with a first connecting through hole corresponding to the position of the second fixing post 22, through which the second fixing post 22 passes. The display mask 4 is provided with a second connecting through hole 41 corresponding to the position of the first connecting through hole. The second fixing post 22 passes through the first connecting through hole and extends into the second connecting through hole 41. The second fastener passes through the second connecting through hole 41 and is fastened in the second fastening hole.

[0040] In this embodiment, the plastic bracket 2, the display mask 4, and the PCB board 3 are fixedly connected by the second fixing post 22, the first connecting through hole, the second connecting through hole 41, and the second fastener, which facilitates daily maintenance and replacement.

[0041] In a preferred embodiment, the back of the bottom shell 1 is provided with multiple heat dissipation fins 12. By providing heat dissipation fins 12, the back of the bottom shell 1 can dissipate heat, further improving the heat dissipation performance of the module.

[0042] In a preferred embodiment, the bottom shell 1 is provided with a latch 13 on its back. The latch 13 facilitates the disassembly of the bottom shell 1, making routine maintenance and replacement easier. Specifically, the bottom shell 1 is provided with a handle 15 on its back for easy disassembly and installation of the module.

[0043] In a preferred embodiment, the back of the bottom shell 1 is provided with a power supply signal mounting groove 14, a plastic waterproof cover plate 7 is disposed in the power supply signal mounting groove 14, a first waterproof rubber ring 8 is provided between the outer side wall of the plastic waterproof cover plate 7 and the power supply signal mounting groove 14, and a second waterproof rubber ring 9 is provided at the bottom of the plastic waterproof cover plate 7.

[0044] In this embodiment, by setting the first waterproof rubber ring 8 and the second waterproof rubber ring 9, the plastic waterproof cover 7 is ensured to have good waterproof performance.

[0045] In a preferred embodiment, the outer periphery of the bottom shell 1 is provided with a 45-degree bevel 16. By providing the 45-degree bevel 16, it is convenient to splice it at a right angle with another module.

[0046] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and alterations to the above embodiments within the scope of the present invention without departing from the principles and spirit of the present invention, and all such changes should fall within the protection scope of the claims of the present invention.

Claims

1. An outdoor LED display module, characterized in that, The device includes a bottom shell (1), a plastic bracket (2) and a PCB board (3) arranged sequentially inside the bottom shell (1), and a display mask (4) for covering the PCB board (3). The bottom shell (1) is an integral die-cast structure. A driver chip (31) is provided on the side of the PCB board (3) facing the bottom shell (1). A light-emitting unit is provided on the side of the PCB board (3) facing the display mask (4). A thermally conductive potting layer (5) is provided between the PCB board (3) and the bottom shell (1). The driver chip (31) is in close contact with the thermally conductive potting layer (5). A sealing potting layer (6) for covering the light-emitting unit is provided between the display mask (4) and the PCB board (3).

2. The outdoor LED display module according to claim 1, characterized in that, The thermally conductive potting layer (5) is made of thermally conductive silicone grease.

3. The outdoor LED display module according to claim 1, characterized in that, The sealing and potting layer (6) is made of epoxy resin.

4. The outdoor LED display module according to claim 1, characterized in that, The bottom shell (1) is made of aluminum alloy.

5. The outdoor LED display module according to claim 1, characterized in that, It also includes a first fastener. The inner side of the bottom shell (1) is provided with a plurality of first fixing posts (11). The first fixing posts (11) have first fastening holes. The plastic bracket (2) is provided with a fixing through hole (21) corresponding to the position of the first fixing posts (11). The first fastener passes through the fixing through hole (21) and is fastened in the first fastening hole.

6. The outdoor LED display module according to claim 1, characterized in that, It also includes a second fastener. The plastic bracket (2) is provided with a plurality of second fixing posts (22). The second fixing posts (22) have second fastening holes. The PCB board (3) is provided with a first connecting through hole for the second fixing posts (22) to pass through at the position corresponding to the second fixing posts (22). The display mask (4) is provided with a second connecting through hole (41) corresponding to the position of the first connecting through hole. The second fixing posts (22) pass through the first connecting through hole and extend into the second connecting through hole (41). The second fastener passes through the second connecting through hole (41) and is fastened in the second fastening hole.

7. The outdoor LED display module according to claim 1, characterized in that, The bottom shell (1) has multiple heat dissipation fins (12) on its back.

8. The outdoor LED display module according to claim 1, characterized in that, The bottom shell (1) has a latch (13) on its back.

9. The outdoor LED display module according to claim 1, characterized in that, The bottom shell (1) has a power supply signal mounting groove (14) on the back. A plastic waterproof cover plate (7) is installed in the power supply signal mounting groove (14). A first waterproof rubber ring (8) is provided between the outer side wall of the plastic waterproof cover plate (7) and the power supply signal mounting groove (14). A second waterproof rubber ring (9) is provided at the bottom of the plastic waterproof cover plate (7).

10. The outdoor LED display module according to claim 1, characterized in that, The outer periphery of the bottom shell (1) is provided with a 45-degree bevel (16).

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