Waterproof and salt-proof LED display device
By designing a double-layered area isolation structure and ventilation ring grooves inside the LED display screen, the problem of waterproofing and salt resistance of outdoor LED displays in coastal environments is solved, achieving effective heat dissipation and waterproofing, ensuring the normal operation of the display screen and extending its service life.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- GUANGXI NANNING BAIXUN ELECTRONIC TECH CO LTD
- Filing Date
- 2025-06-30
- Publication Date
- 2026-06-23
AI Technical Summary
Outdoor LED displays are susceptible to corrosion from salt and rainwater in coastal environments, and their poor waterproofing due to poor heat dissipation vents can lead to short circuits and corrosion of internal components.
The design incorporates a double-layered area isolation structure, dividing the internal space of the LED display screen into an installation area and a ventilation ring groove via a ring-shaped mounting edge. Ventilation gaps and heat dissipation structures are incorporated, and the ventilation ring groove facilitates heat exchange while isolating moisture. Combined with a sealing design and absorbent sponge, the waterproof and salt-proof performance is enhanced.
It achieves effective waterproofing and salt resistance in coastal environments, ensuring the normal operation of the LED display screen and extending its service life, while simplifying the disassembly and assembly process.
Smart Images
Figure CN224401818U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of display equipment technology, specifically to a waterproof and salt-proof LED display device. Background Technology
[0002] LED displays primarily utilize LEDs (light-emitting diodes) as light-emitting devices. These diodes are sequentially soldered onto a circuit board with driver components. The on / off state of the LEDs displays text and graphics, making them widely used in various outdoor scenarios. Outdoor environments require exposure to harsh conditions, so outdoor LED displays typically incorporate waterproofing features, as illustrated in patent CN202322224872.3 – a waterproof LED display structure. However, LED displays often have ventilation holes connecting the inside and outside for heat dissipation. These holes compromise the display's waterproofness, allowing water to easily seep into the casing and damage the screen. This is especially problematic at sea, where the weather is unpredictable, with rainwater containing salt in addition to wind and rain. When this salty rainwater enters the ventilation holes, it can cause short circuits in the internal components of the LED display. Furthermore, in sunny weather, the evaporating rainwater can create water mist inside the display, which can spread throughout the entire screen. This water mist can eventually form salt droplets, clogging the ventilation holes and corroding the internal electronic components. Utility Model Content
[0003] In order to overcome one of the shortcomings of the existing technology, the purpose of this utility model is to provide a waterproof and salt-proof LED display device. This waterproof and salt-proof LED display device can achieve both heat dissipation and waterproofing by designing a ventilation ring groove.
[0004] To solve the above problems, the technical solution adopted by this utility model is as follows:
[0005] A waterproof and salt-resistant LED display device includes several LED displays assembled from LED display modules, a housing, and a back cover. The housing has tempered glass on one side of the LED display screen. An annular mounting edge is provided along the periphery of the tempered glass, dividing the internal space of the housing into an installation area and a ventilation groove. The LED display screen is mounted within the installation area. Several ventilation openings are provided on the annular mounting edge, connecting the installation area and the ventilation groove. The back cover is sealed on one side of the housing opening and blocks the ventilation groove. Several heat dissipation structures communicating with the ventilation groove are provided on the back cover.
[0006] Furthermore, the heat dissipation structure includes a ventilation shroud and a heat-dissipating window disposed on the bottom of the ventilation shroud. The ventilation shroud is fastened to the outside of the ventilation hole on the rear cover. The ventilation hole is connected to the ventilation ring groove. The heat-dissipating window is vertically offset from the ventilation hole.
[0007] Furthermore, the rear cover is provided with several heat dissipation ridges that communicate with the outer wall of the ventilation hood.
[0008] Furthermore, a one-way baffle is provided on the back cover outside the ventilation hole.
[0009] Furthermore, a recessed area is formed downward in the middle of the ventilation ring groove at the top, the ventilation hole is connected to the recessed area, and an absorbent sponge is provided on the bottom of the recessed area.
[0010] Furthermore, a plurality of heat sinks are provided on the side of the rear cover that mates with the housing, and all the heat sinks extend into the ventilation ring groove. The thickness direction of the heat sinks is parallel to the width direction of the ventilation ring groove, and the rear cover is provided with heat sink ridges for connecting the heat sinks.
[0011] Furthermore, a sealing ring groove is provided circumferentially on the side of the housing that mates with the rear cover, and a sealing ring is provided in the sealing ring groove.
[0012] Furthermore, a sealing strip is provided between the periphery of the tempered glass and the periphery of the LED display screen, and a sealing strip is also provided between the annular mounting edge and the back cover.
[0013] Furthermore, the housing is provided with a mounting step in the circumferential direction, and the outer periphery of the rear cover is provided with a snap-fit edge that cooperates with the mounting step.
[0014] Furthermore, the housing has a perforated hole at the location of the mounting area, and the tempered glass is installed on the outward end of the perforated hole using sealant.
[0015] Compared with the prior art, the beneficial effects of this utility model are as follows:
[0016] This utility model discloses a waterproof and salt-proof LED display device with an annular retaining edge inside the housing, dividing the internal space into an installation area and a ventilation groove. This facilitates double-layer isolation, reducing the risk of external moisture entering the installation area through the heat dissipation structure and ventilation groove, thus improving the waterproof and salt-proof effect. Simultaneously, the LED display screen is secured to the periphery of the installation area, with the ventilation groove located on the outer periphery. This structural design allows heat emitted by the LED display screen in the installation area to quickly enter the ventilation groove. The hot air rises rapidly within the ventilation groove and is expelled outwards through the heat dissipation structure, effectively removing internal humid and hot air. This rapid heat removal ensures the normal operation of the LED display screen. The rear cover simultaneously seals both the housing and the ventilation groove, facilitating easy disassembly and reassembly later, simplifying the disassembly and reassembly process.
[0017] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments. Attached Figure Description
[0018] Figure 1 This is a structural schematic diagram of an embodiment of the present utility model;
[0019] Figure 2 This is an exploded view of an embodiment of the present utility model;
[0020] Figure 3 This is a schematic diagram of the internal structure of an embodiment of the present utility model;
[0021] Figure 4 yes Figure 3 A magnified view of a portion of point A in the middle.
[0022] Explanation of icon numbers:
[0023] LED display screen 10, housing 20, tempered glass 21, annular mounting edge 22, mounting area 23, ventilation annular groove 24, ventilation notch 25, water-absorbing sponge 26, sealing annular groove 27, sealing ring 28, mounting step 29, hollow hole 2a, recessed area 2b, back cover 30, ventilation hole 31, heat dissipation ridge 32, one-way baffle 33, heat sink 34, snap edge 35, heat dissipation structure 40, ventilation cover 41, heat dissipation window 42. Detailed Implementation
[0024] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this utility model and are not intended to limit this utility model.
[0025] Reference Figures 1 to 4The waterproof and salt-resistant LED display device shown includes several LED display screens 10 assembled from LED display modules, a housing 20, and a back cover 30. The housing 20 has tempered glass 21 on one side of the LED display screen 10. An annular mounting edge 22 is provided along the periphery of the tempered glass 21, dividing the internal space of the housing 20 into an installation area 23 and a ventilation groove 24. The LED display screen 10 is mounted in the installation area 23. Several ventilation openings 25 are provided on the annular mounting edge 22, connecting the installation area 23 and the ventilation groove 24. The back cover 30 is sealed and fastened to one side of the opening of the housing 20, blocking the ventilation groove 24. Several heat dissipation structures 40 communicating with the ventilation groove 24 are provided on the back cover 30.
[0026] Specifically, the LED display screen 10 has a conventional structure and can be made from commercially available LED displays. In this application, the housing 20 is a conventional one-piece molded structure, and the tempered glass 21 is sealed to the housing 20. Besides providing waterproofing, it also protects the LED display screen 10 from damage caused by debris or tree branches blown by strong winds at the beach. The back cover 30 can be made of a plastic with good heat dissipation or a salt-resistant metal material. Furthermore, to increase strength, several reinforcing ribs are provided inside the ventilation ring groove 24. These reinforcing ribs do not obstruct the ventilation ring groove 24, ensuring airflow within it.
[0027] Furthermore, to ensure waterproofing, the ventilation notch 25 is located on the vertical and bottom areas of the annular mounting edge 22. If it were located at the top, external moisture could easily enter the ventilation annular groove 24 through the heat dissipation structure 40 and then directly enter the mounting area 23 through the ventilation notch 25. Therefore, in this application, the ventilation notch 25 is not located on the top area of the annular mounting edge 22. It should be further noted that, to further improve protection, an inner cover can also be fastened to the mounting area 23, which can completely enclose the LED display screen 10 within the mounting area 23, further enhancing waterproofing. In one embodiment of this application, the width of the top of the ventilation ring groove 24 is greater than the width of the bottom ring groove 24, and the heat dissipation structure 40 is also disposed on the top area of the back cover 30. This arrangement allows the water vapor to condense and deposit in the bottom ventilation ring groove 24 if a large amount of external water vapor enters the ventilation ring groove 24, preventing it from directly entering the mounting area 23. At the same time, the top ventilation ring groove 24 is relatively narrow. When the LED display screen 10 generates a large amount of heat during normal operation, the hot air rises in the ventilation ring groove 24 and is discharged to the outside through the heat dissipation structure 40. Since the top ventilation ring groove 24 is relatively narrow, a neck is formed, and the hot airflow accelerates towards the heat dissipation structure 40 in this area, thereby improving its overall heat dissipation capacity.
[0028] This waterproof and salt-proof LED display device features an annular retaining edge 22 within the housing 20, dividing its internal space into an installation area 23 and a ventilation annular groove 24. This facilitates double-layer area isolation, reducing the risk of external moisture entering the installation area 23 through the heat dissipation structure 40 and the ventilation annular groove 24, thus improving the waterproof and salt-proof effect. Simultaneously, the LED display screen 10 is secured to the periphery of the installation area 23, with the ventilation annular groove 24 located on its outer periphery. This structural design allows heat dissipated from the LED display screen 10 within the installation area 23 to quickly enter the ventilation annular groove 24. The hot air rises rapidly within the ventilation annular groove 24 and is expelled outwards through the heat dissipation structure 40, effectively removing internal humid and hot air. This rapid heat removal from the installation area 23 ensures the normal operation of the LED display screen 10. The rear cover 30 simultaneously seals both the housing 20 and the ventilation annular groove 24, facilitating easy disassembly and reassembly and simplifying the disassembly process.
[0029] See Figures 1 to 3To improve heat dissipation, the heat dissipation structure 40 can be a conventional heat dissipation fin, air-cooled, or water-cooled structure. In one embodiment of this application, to simplify the structure, the heat dissipation structure 40 includes a ventilation shroud 41 and a heat-dissipating window 42 disposed on the bottom of the ventilation shroud 41. The ventilation shroud 41 is fastened to the outside of the ventilation hole 31 on the rear cover 30. The ventilation hole 31 communicates with the ventilation ring groove 24, and the heat-dissipating window 42 is vertically offset from the ventilation hole 31. As described in the above embodiment, the heat dissipation structure 40 is disposed in the upper part of the rear cover 30, mainly to adapt to the rising hot airflow. For this purpose, the ventilation hole 31 is actually connected to the ventilation ring groove 24 at the top. To improve waterproofing, the heat-dissipating window 42 is actually disposed in the middle of the rear cover 30. This offset arrangement is beneficial for waterproofing while also providing heat exchange.
[0030] In the above-mentioned improved solution, the rear cover 30 is provided with a plurality of heat dissipation ridges 32 that communicate with the outer wall of the ventilation hood 41, wherein the heat dissipation ridges 32 can also play a role in strengthening the rear cover 30 to a certain extent.
[0031] Furthermore, in an improved embodiment, to avoid complex typhoon weather at the coast and to prevent strong winds from carrying rainwater backwards through the ventilation cover 41 into the ventilation hole 31, the rear cover 30 is provided with a one-way baffle 33 on the outside of the ventilation hole 31. The one-way baffle 33 is very thin and light. When the LED display screen 10 is working normally, due to the continuous heat release inside, the rising hot airflow will push open the one-way baffle 33, facilitating the outward flow of the internal hot airflow. Generally, the diameter of the ventilation hole 31 is generally of a certain specification, which will cause the external cold airflow and the hot airflow inside the ventilation ring groove 24 to form a weak convection. In this application, there can be more than one ventilation hole 31, which can be multiple, depending on the requirements. In some embodiments, a flow-through hole can even be directly provided above the ventilation hole 31, and the cross-section of the flow-through hole is smaller than that of the ventilation hole 31. However, in practice, this is generally not done, so it is set according to actual needs.
[0032] In one embodiment of this application, to prevent rainwater from being carried or seeping into the ventilation annular groove 24 by strong external winds through the ventilation hole 31 in extreme conditions, such as typhoon weather, a recessed area 2b is formed downwards in the middle of the top of the ventilation annular groove 24. The ventilation hole 31 communicates with the recessed area 2b, and a water-absorbing sponge 26 is provided at the bottom of the recessed area 2b. In reality, externally condensed water vapor or rainwater brought in will naturally flow out through the ventilation hole 31, improving drainage performance. In fact, the situation of rainwater being brought in by typhoons is very rare. The main purpose is to deal with condensed water vapor. Therefore, the water-absorbing sponge 26 is provided to absorb this condensed water vapor. The water-absorbing sponge 26 can be replaced periodically by the staff.
[0033] See Figure 3 In one embodiment of this application, to improve heat dissipation, a plurality of heat dissipation fins 34 are provided on the side of the rear cover 30 that mates with the housing 20. All the heat dissipation fins 34 extend into the ventilation annular groove 24, and the thickness direction of the heat dissipation fins 34 is parallel to the width direction of the ventilation annular groove 24. The rear cover 30 is provided with heat dissipation ridges 32 connecting the heat dissipation fins 34. The heat dissipation fins 34 can conduct heat from the hot air in the ventilation annular groove 24 to the outside, thereby achieving heat dissipation.
[0034] See Figure 4 In one embodiment of this application, to improve sealing, a sealing ring groove 27 is provided circumferentially on the side of the housing 20 that mates with the rear cover 30, and a sealing ring 28 is provided in the sealing ring groove 27. Similarly, a sealing strip is provided between the periphery of the tempered glass 21 and the periphery of the LED display screen 10, and a sealing strip is also provided between the annular mounting edge 22 and the rear cover 30.
[0035] To facilitate installation, the housing 20 is provided with a mounting step 29 on its circumference, and the outer periphery of the rear cover 30 is provided with a retaining edge 35 that mates with the mounting step 29. In fact, the design of the mounting step 29 and the retaining edge 35 also plays a role in waterproofing to a certain extent, preventing external rainwater from directly entering the interior of the housing 20.
[0036] In the above embodiment, to facilitate the installation of the tempered glass 21, the housing 20 has a perforated hole 2a at the location of the mounting area 23. The tempered glass 21 is installed on the outward end of the perforated hole 2a using sealant. In fact, the outward end of the perforated hole 2a has a step, on which the tempered glass 21 is installed, and the sealant is directly applied to both sides of the tempered glass 21 that contact the step, improving the sealing effect.
[0037] The above embodiments are merely preferred embodiments of this utility model and should not be construed as limiting the scope of protection of this utility model. Any non-substantial changes and substitutions made by those skilled in the art based on this utility model shall fall within the scope of protection claimed by this utility model.
Claims
1. A waterproof and salt-resistant LED display device, comprising a plurality of LED display screens assembled from LED display modules, characterized in that, It also includes a housing and a back cover. The housing is provided with tempered glass on the side where the LED display screen is displayed. The housing has an annular mounting edge along the periphery of the tempered glass, which divides the internal space of the housing into an installation area and a ventilation groove. The periphery of the LED display screen is mounted in the installation area. The annular mounting edge has several ventilation openings connecting the installation area and the ventilation groove. The back cover is sealed on one side of the housing opening and blocks the ventilation groove. The back cover has several heat dissipation structures communicating with the ventilation groove.
2. The waterproof and salt-proof LED display device according to claim 1, characterized in that: The heat dissipation structure includes a ventilation shroud and a heat-dissipating window disposed on the bottom of the ventilation shroud. The ventilation shroud is fastened to the outside of the ventilation hole on the rear cover. The ventilation hole is connected to the ventilation ring groove. The heat-dissipating window is vertically offset from the ventilation hole.
3. A waterproof and salt-resistant LED display device according to claim 2, characterized in that: The rear cover is provided with several heat dissipation ridges that communicate with the outer wall of the ventilation hood.
4. A waterproof and salt-resistant LED display device according to claim 2, characterized in that: The rear cover is provided with a one-way baffle outside the ventilation hole.
5. A waterproof and salt-resistant LED display device according to claim 2, characterized in that: The ventilation ring groove at the top forms a recessed area downwards in the middle, the ventilation hole communicates with the recessed area, and an absorbent sponge is provided on the bottom of the recessed area.
6. A waterproof and salt-proof LED display device according to claim 1, characterized in that: A plurality of heat sinks are provided on the side of the rear cover that mates with the housing. All the heat sinks extend into the ventilation ring groove. The thickness direction of the heat sinks is parallel to the width direction of the ventilation ring groove. The rear cover is provided with heat sink ridges for connecting the heat sinks.
7. A waterproof and salt-proof LED display device according to claim 1, characterized in that: A sealing ring groove is provided circumferentially on one side of the housing that mates with the rear cover, and a sealing ring is provided in the sealing ring groove.
8. A waterproof and salt-resistant LED display device according to any one of claims 1-7, characterized in that: A sealing strip is provided between the periphery of the tempered glass and the periphery of the LED display screen, and a sealing strip is also provided between the annular mounting edge and the back cover.
9. A waterproof and salt-resistant LED display device according to any one of claims 1-7, characterized in that: The housing is provided with a mounting step in the circumference, and the outer periphery of the rear cover is provided with a snap edge that cooperates with the mounting step.
10. A waterproof and salt-resistant LED display device according to claim 1, characterized in that: The housing has a perforated hole at the location of the installation area, and the tempered glass is installed on the outward end of the perforated hole using sealant.