Waterproof LED display device

Abstract

The utility model discloses a waterproof LED display device which comprises a waterproof cover and an LED carrier plate, the LED carrier plate comprises a plurality of through holes which are regularly distributed, and the waterproof cover is provided with protruding hole bodies which are consistent with the through holes in distribution rule, position and shape. The waterproof cover is arranged on the front face of the LED carrier plate, and the hole body is embedded into the through hole and protrudes out of the back face of the LED carrier plate. A sealing glue layer is arranged on at least one of the front surface and the back surface of the LED support plate; connecting parts are arranged among the hole bodies, and the regularly arranged hole bodies are connected together through the connecting parts; at least one edge of the waterproof cover is of a tooth-shaped edge structure, and the tooth-shaped edge structure is formed by arranging semi-hole bodies and connecting parts. Wherein the hole body on the waterproof cover is embedded into the through hole, so that the light transmission of the LED support plate is not influenced. Meanwhile, at least one of the front surface and the back surface of the LED support plate is provided with the sealing glue layer, so that moisture, dust and other external factors can be effectively prevented from invading the LED support plate.

Description

Technical Field

[0001] This application relates to the field of LED display, in particular to a waterproof LED display device Background Art

[0002] A transparent display device is created by regularly patterning through-holes on a PCB substrate and arraying LEDs in the non-through-hole areas. This type of display is widely used for indoor advertising and displays. It is thin, transparent, and transparent, achieving the desired effect of a transparent display even when not playing content.

[0003] However, when used outdoors, these transparent display devices are exposed to external environmental factors such as rain, moisture, and dust, which can easily lead to performance degradation or device damage. Therefore, in order to improve the applicability of these transparent display devices in outdoor environments, they need to be effectively waterproofed and dustproofed.

[0004] Therefore, it is particularly important to develop a solution that can meet the requirements of transparent LED display effects and has good waterproof performance. Utility Model Content

[0005] In view of this, the utility model discloses a waterproof LED display device, which not only meets the transparent display effect, but also has waterproof and dustproof effects.

[0006] The details of this plan are as follows:

[0007] A waterproof LED display device comprises a waterproof cover and an LED carrier board, wherein the LED carrier board comprises a plurality of regularly distributed through holes, and the waterproof cover is provided with protruding holes having the same distribution pattern, position and shape as the through holes;

[0008] The waterproof cover is arranged on the front of the LED carrier board, and the hole body is embedded in the through hole and protrudes from the back of the LED carrier board;

[0009] A sealing layer is provided on at least one of the front and back sides of the LED carrier board;

[0010] Connecting parts are provided between the holes, and the connecting parts connect the regularly arranged holes together;

[0011] At least one side of the waterproof cover is a toothed edge structure, and the toothed edge structure is composed of a semi-hole body and a connecting part.

[0012] In one possible implementation, the hole body includes a first hole body and a second hole body, the first hole body includes a first hole body front end face and a first hole body rear end face, the second hole body includes a second hole body front end face and a second hole body rear end face, the second hole body front end face is arranged on the first hole body rear end face, and the second hole body is embedded in the through hole and protrudes from the back of the LED carrier board.

[0013] In a possible implementation, the inner hole shapes and sizes of the first hole body and the second hole body are the same, and the inner hole shapes of the first hole body and the second hole body are overlapped and connected together.

[0014] In a possible implementation, the outer wall of the first hole body is higher than the outer wall of the second hole body.

[0015] In a possible implementation, the rear end surface of the first hole body is attached to the non-through area around the through hole on the front surface of the LED carrier board.

[0016] In a possible implementation, the connecting portion is integrally provided with the hole body, and the connecting portion is provided on the outer side wall of the first hole body, including a bottom surface and a top surface, and the bottom surface of the connecting portion is aligned with the rear end surface of the first hole body.

[0017] In a possible implementation, the top surface of the connecting portion is aligned with the front end surface of the first hole body.

[0018] In a possible implementation, the sealing layer includes a first sealing layer and a second sealing layer.

[0019] The first sealing layer is located on the front of the LED carrier and is composed of a sealing layer unit. The sealing layer unit is formed by sealing a closed or semi-closed area surrounded by the outer wall of the first hole, the side wall of the connecting portion, and the non-penetrating area on the front of the LED carrier;

[0020] The second sealing layer is located on the back of the LED carrier board and is formed by sealing the outer side walls of the second holes protruding from the back of the LED carrier board and the non-penetrating area on the back of the LED carrier board.

[0021] In a possible implementation, it further includes an LED light-emitting body, and the LED light-emitting body is arranged in a non-penetrating area of ​​the LED carrier board on the sealing layer unit area.

[0022] In a possible implementation, the light-emitting surface of the LED light-emitting body exposes the sealing layer unit.

[0023] The utility model provides a waterproof LED display device. By providing a protruding hole body on the waterproof cover that is consistent with the distribution pattern, position and shape of the through holes, it is ensured that when the waterproof cover is installed on the LED carrier, it does not block the through holes on the carrier, thereby not affecting the transparent display effect of the LED display device. Moreover, the hole body is embedded in the through holes and protrudes from the back of the LED carrier, which not only enhances the bonding stability between the waterproof cover and the LED carrier, but also forms a sealing area on the back of the carrier. A sealing layer is provided on at least one side of the front or back of the LED carrier, which can effectively prevent the intrusion of moisture, dust and other external factors, and significantly extend the service life of the display device. In addition, one side of the waterproof cover is designed as a serrated edge structure, thereby preventing the edge of the waterproof cover from blocking the through holes. Moreover, through the serrated edge structure, multiple waterproof covers can be spliced ​​into a larger waterproof cover, and after splicing, the through holes on the LED carrier will still not be blocked. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0025] in:

[0026] Figure 1 This is a schematic diagram of a waterproof cover and an LED carrier board in a waterproof LED display device of the present application;

[0027] Figure 2 This is a front perspective schematic diagram of a waterproof cover in a waterproof LED display device of the present application;

[0028] Figure 3 This is a three-dimensional schematic diagram of the back of a waterproof cover in a waterproof LED display device of the present application;

[0029] Figure 4 This is a partially enlarged schematic diagram of the front of a waterproof cover in a waterproof LED display device of the present application;

[0030] Figure 5 This is a partially enlarged schematic diagram of the back side of a waterproof cover in a waterproof LED display device of the present application;

[0031] Figure 6 This is a partial front view of a waterproof LED display device of the present application;

[0032] Figure 7 This is a partial schematic diagram of the back side of a waterproof LED display device of the present application;

[0033] Figure 8 This is a side view of a hole in a waterproof cover of a waterproof LED display device of the present application;

[0034] Figure 9 This is a side view of the hole and connection part of the waterproof cover in a waterproof LED display device of the present application.

[0035] Figure 10 This is a partially enlarged schematic diagram of the second sealing layer on the back side of a waterproof cover for LED display in the present application. DETAILED DESCRIPTION

[0036] 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 embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0037] A perforated PCB carrier board with regular through-holes and LED lamps in the non-through-hole areas is currently available, creating a transparent display device that can achieve high-quality LED transparent display effects. However, when used outdoors, this type of display device is susceptible to external factors such as rain, moisture, and dust, which can easily cause device damage or performance degradation. Therefore, this transparent display device lacks waterproof performance and cannot meet the requirements of outdoor environments.

[0038] Based on this, the present application provides a waterproof LED display device, which is waterproof and dustproof.

[0039] like Figure 1 、 Figure 6 as well as Figure 7 As shown, a waterproof LED display device includes a waterproof cover 1 and an LED carrier board 4. The LED carrier board 4 is provided with regularly distributed through-holes 40. The waterproof cover 1 is provided with protruding holes 10 that match the distribution pattern, position, and shape of these through-holes 40. The waterproof cover 1 is placed on the front of the LED carrier board 4, with the holes 10 embedded in the through-holes 40 and protruding from the back of the LED carrier board 4. In addition, a sealing layer is applied to at least one of the front and back sides of the LED carrier board 4 to provide waterproof and dustproof effects.

[0040] It is understandable that Figure 1The circular outer wall shape of the through-hole 40 and the hole body 10 is shown for illustrative purposes only and is not intended to be limiting. The shapes of the through-hole 40 and the hole body 10 can vary depending on the actual situation. This application does not limit the outer wall shape of the through-hole 40 and the hole body 10, and allows for various regular or irregular shapes such as rectangle, diamond, triangle, etc.

[0041] like Figure 2 、 Figure 3 As shown, Figure 2 、 Figure 3 It is a three-dimensional schematic diagram of the waterproof cover 1. The waterproof cover 1 is provided with regularly arranged holes 10. Connecting parts 20 are provided between the holes 10. The connecting parts 20 and the holes 10 are integrally provided to connect the regularly arranged holes 10 together.

[0042] Further, such as Figure 4 、 Figure 5 and 8 As shown, the hole body 10 further includes a first hole body 11 and a second hole body 12, and the inner holes of the first hole body 11 and the second hole body 12 ( Figure 8 The dotted line in the middle hole 10 represents the inner hole. The first hole 11 and the second hole 12 have the same shape and size, and their inner holes overlap and connect. The first hole 11 includes a first hole front face 111 and a first hole rear face 112. The second hole 11 includes a second hole front face and a second hole rear face 123. The second hole front face is positioned above the first hole rear face 112. When the waterproof cover 1 is placed on the LED substrate 4, the second hole 12 fits into the through hole 40 on the LED substrate 4 and protrudes from the back of the LED substrate 4.

[0043] like Figure 9 As shown, the connecting portion 20 includes a bottom surface 22 and a top surface 21 , and the bottom surface 22 of the connecting portion is aligned with the rear end surface 112 of the first hole body.

[0044] like Figure 8 As shown, Figure 8 It is a side view of the hole body 10. The first hole body 11 and the second hole body 12 also include outer walls. The connecting portion 20 is arranged on the outer wall 113 of the first hole body, and the outer wall 113 of the first hole body 11 is higher than the outer wall 121 of the second hole body. The following is an example in which the outer walls of the first hole body 11 and the second hole body 12 are circular.

[0045] If the outer walls of the first and second holes 11, 12 are circular, and the first hole outer wall 113 is higher than the second hole outer wall 121, this means that the outer diameter of the first hole 11 is larger than the outer diameter of the second hole 12. When the waterproof cover 1 is placed on the LED substrate 4, the second hole 12 needs to be embedded in the through-hole of the LED substrate 4. To ensure that the waterproof cover 1 is relatively fixed in the horizontal direction, the second hole 12 should mate with the through-hole 40 on the LED substrate 4. This allows the second hole 12 to be smoothly embedded, while preventing the waterproof cover 1 from excessively shifting horizontally, which could prevent the waterproof cover 1 from misaligning during the sealing process.

[0046] Furthermore, the first hole outer wall 113 is higher than the second hole outer wall 121. When the second hole 12 is inserted into the through hole 40, the first hole rear end surface 112 is in contact with the non-through area surrounding the through hole 40 of the LED carrier 4. At this point, the first hole outer wall 113, the sidewall of the connecting portion 20, and the non-through area on the front of the LED carrier 4 can enclose the area where the adhesive sealing layer unit 41 is located, thus preventing adhesive leakage from the adhesive sealing layer unit 41.

[0047] In addition, by setting the outer wall 113 of the first hole body 11 higher than the outer wall of the second hole body 12, when sealing the back of the LED carrier board 4, it can also prevent the glue on the back of the LED carrier board 4 from flowing to the front. This is described in detail below and will not be repeated here.

[0048] Furthermore, in this embodiment, the sealing layer includes a first sealing layer and a second sealing layer. The first sealing layer is provided on the front surface of the LED carrier 4 and is composed of a sealing layer unit 41. The sealing layer unit 41 is formed by sealing a closed or semi-closed area surrounded by the outer wall 113 of the first hole, the side wall of the connecting portion 20, and the non-penetrating area on the front surface of the LED carrier 4. Specifically, Figure 4 、 Figure 5 、 Figure 6 As shown, the rear end surface 112 of the first hole body 11 and the bottom surface 22 of the connecting portion are attached to the non-penetrating area on the front surface of the LED carrier board 4. The outer side wall 113 of the first hole body, the side wall of the connecting portion 20 and the non-penetrating area on the front surface of the LED carrier board 4 are surrounded to form a closed or semi-closed area. By sealing the area with glue, a glue sealing layer unit 41 is formed ( Figure 4 、 Figure 5 as well as Figure 6 A glue sealing layer unit 41 is marked with a dotted line. The multiple glue sealing layer units 41 on the front side of the carrier board 4 constitute a first glue sealing layer.

[0049] In this embodiment, the LED display device also includes an LED light-emitting body 5 located on the front side of the LED carrier board 4. The LED light-emitting body 5 is arranged in the non-penetrating area of ​​the LED carrier board 4 in the area where the sealing layer unit 41 is located, that is, the non-penetrating area located on the outer side wall 113 of the first hole body, the side wall of the connecting portion 20 and the front side of the LED carrier board 4 form a closed or semi-closed area. The sealing layer unit 41 seals the LED light-emitting body 5 in the area, which can effectively protect the LED light-emitting body 5 and the surrounding circuits from moisture and dust. In addition, the sealing layer unit 41 can also fix the waterproof cover 1 and the LED carrier board 4 together.

[0050] It should be noted that, in order not to affect the lighting effect of the LED light-emitting body 5 , the light-emitting surface of the LED light-emitting body 5 may expose the sealing layer unit 41 .

[0051] In some embodiments, as Figure 9 As shown, the bottom surface 22 of the connecting portion is aligned with the rear end surface 112 of the first hole body 11, and the top surface 21 of the connecting portion is aligned with the front end surface 111 of the first hole body 11, that is, the height of the connecting portion 20 and the first hole body 11 are both h. At this time, the outer side wall 113 of the first hole body 11, the side wall of the connecting portion 20 and the non-penetrating area on the front side of the LED carrier board 4 are surrounded to form a closed area.

[0052] In other embodiments, the top surface 21 of the connecting portion may be lower than the front end surface 111 of the first hole body 11, that is, the height of the connecting portion 20 is less than the height of the first hole body 11. At this time, the outer wall 113 of the first hole body 11, the side wall of the connecting portion 20 and the non-penetrating area on the front side of the LED carrier board 4 form a semi-enclosed area. When the area is sealed with glue, after the glue reaches a certain height, it will naturally flow out from the connecting portion 20 and flow to the adjacent glue sealing layer unit area, which can improve the sealing efficiency.

[0053] It is understandable that the thickness of the first sealant layer depends on the actual situation, that is, the thickness of the first sealant layer needs to be reached in order to achieve the waterproof and dustproof effect. Therefore, this application does not limit the height of the first sealant layer and can be adjusted according to the actual situation.

[0054] In some large-scale LED carriers 4, to address the issue of insufficient power supply to the remote LED emitters, the power supply circuit is thickened. Due to limited space within the carrier, the thickened power supply circuit is installed on the back of the LED carrier 4. However, the power supply circuit is exposed to the outside of the carrier, making it susceptible to rain and dust. Therefore, the back of the LED carrier 4 also needs to be waterproofed. If glue is directly applied to the back of the LED carrier 4, the LED carrier 4 has through-holes, and the glue is likely to leak through the through-holes 40 and solidify there, affecting the display effect of the LED display device. Therefore, direct glue sealing is more difficult.

[0055] Based on this, in this embodiment, a second sealing layer is provided on the back of the LED carrier 4. The second sealing layer is formed by sealing the outer side walls 121 of the second holes protruding from the back of the LED carrier 4 and the non-penetrating area on the back of the LED carrier 4. Figure 3 、 Figure 5 、 Figure 7 As shown, when the waterproof cover 1 is set on the front side of the LED carrier board 4, the second hole body 12 is embedded in the through hole 40 on the LED carrier board 4, and passes through the through hole 40 on the LED carrier board 4, and exceeds the plane where the back side of the LED carrier board 4 is located by a certain length. The exceeding part forms an area with the back side of the LED carrier board 4, and the area is sealed with glue to form a second glue sealing layer. The exceeding part of the second hole body 12 acts as a dam. When the waterproof glue layer is filled on the back side of the LED carrier board 4, it can prevent the glue from leaking from the through hole 40 when the back side of the LED carrier board 4 is sealed with glue.

[0056] In some embodiments, as Figure 10 As shown, the bottom surface 22 of the connection portion at the edge of the waterproof cover 1 ( Figure 10 The dotted line frame portion) can be aligned with the rear end face 112 of the first hole body. On the back of the LED carrier board 4, the outer side walls of the protruding multiple second hole bodies 12 and the back of the LED carrier board 4 form an area of ​​the second sealing layer. Because the bottom surface of the connecting portion 20 at the edge of the waterproof cover 1 is aligned with the rear end face 112 of the first hole body, it is not aligned with the rear end face 123 of the second hole body. Figure 10 From a middle view (seen from the back of the waterproof cover 1 ), the height of the connecting portion 20 at the edge of the waterproof cover 1 is lower than the height of the second hole 12 , and the second sealing layer area formed at this time is a semi-enclosed area.

[0057] In other embodiments, the connection portion 20 ( Figure 10 The bottom surface of the second hole body (the dotted line frame part) can be aligned with the rear end surface 123 of the second hole body. At this time, on the back of the waterproof cover 1, a second sealing layer area is formed between the outer side walls of the regularly arranged multiple second hole bodies 12 and the connecting portion 20. Because the bottom surface of the connecting portion 20 at the edge of the waterproof cover 1 is aligned with the rear end surface 123 of the second hole body, Figure 10 From a middle perspective (seen from the back of the waterproof cover 1 ), the height of the connecting portion 20 at the edge of the waterproof cover 1 is equal to the height of the second hole 12 , and the second adhesive sealing layer formed at this time is a closed area.

[0058] It should be noted that, in this example, the through-hole 40 and the hole body 10 are circular. To allow the second hole body 12 to fit into the through-hole 40, the second hole body 12 and the through-hole 40 must fit together. Therefore, when the back of the LED carrier 4 is sealed with glue, some glue may flow along the gap between the second hole body 12 and the through-hole 40 to the front of the carrier. Therefore, in this embodiment, the outer wall 113 of the first hole body is higher than the outer wall 121 of the second hole body 12. When the waterproof cover 1 is installed on the LED carrier 4, the first hole body 11 fits into and fits with the through-hole 40, and the rear end surface of the first hole body 11 smoothly fits the non-through-hole area on the front of the LED carrier 4, effectively forming a tight ring structure around the through-hole 40 on the front of the LED carrier 4. This ensures that when the back of the LED carrier 4 is sealed with glue, the glue does not affect the front of the LED carrier 4. At the same time, some glue remaining in the gap between the second hole body 12 and the through-hole 40 also serves to seal and protect the LED carrier 4.

[0059] In this embodiment, a second sealing layer is provided, which is formed by sealing the outer side walls of the second holes 12 protruding from the back of the carrier board and the closed semi-enclosed area formed by the back of the LED carrier board 4, thereby solving the problem of waterproofing the back of the LED carrier board 4.

[0060] It can be understood that the length of the second hole 12 extending beyond the LED carrier 4 depends on the thickness of the back sealant, that is, the thickness of the sealant layer needs to reach in order to achieve a waterproof effect. Therefore, this embodiment does not limit the length of the second hole 12 extending beyond the LED carrier 4.

[0061] In some display scenes that require large size, it is usually necessary to splice multiple smaller size LED carriers 4 to obtain a large size LED carrier 4. In order to achieve seamless splicing, such as Figure 1 As shown, in this embodiment, the edge of the LED carrier 4 includes a carrier toothed edge 42 composed of half through holes 40 and non-through areas. When the LED carriers 4 are spliced ​​together, the two half through holes 40 are spliced ​​together to form a complete through hole 40, thereby achieving seamless splicing.

[0062] Corresponding to the carrier board toothed edge 42 of the LED carrier board 4, as shown Figure 2 、 Figure 3As shown, in this embodiment, at least one side of the waterproof cover 1 is provided with a serrated edge structure 30 composed of a half-hole body 10 and a connecting portion 20. When the waterproof cover 1 is set on the LED carrier board 4, the serrated edge structure 30 of the waterproof cover 1 will not block the carrier serrated edge 42 of the LED carrier board 4. Moreover, the waterproof cover 1 and the carrier board can be seamlessly spliced. When the waterproof cover 1 is spliced, the two half-hole bodies 10 are merged into a complete hole body 10, and the two connecting portions 20 are also spliced ​​to form a complete connecting portion 20, which does not block the through hole 40 on the LED carrier board 4. By providing a serrated edge structure on at least one side of the waterproof cover 1, this embodiment allows the waterproof cover 1 to be spliced ​​into a larger waterproof cover 1 to meet the waterproofing requirements of large-sized LED carrier boards 4.

[0063] It should be pointed out that this embodiment does not limit the waterproof cover 1 to having the toothed structure 30 on only one side. In fact, the toothed structure 30 can be set on some or all sides of the waterproof cover 1. The specific design depends on the actual application scenario, and this application does not impose any restrictions on this.

[0064] Obviously, the above embodiments of the present invention are merely examples for the purpose of clearly illustrating the present invention, and are not intended to limit the implementation methods of the present invention. Those skilled in the art will appreciate that other variations or modifications can be made based on the above description. It is not necessary and impossible to enumerate all implementation methods here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the claims of the present invention.

Claims

1. A waterproof LED display device, comprising a waterproof cover and an LED carrier board, characterized in that: The LED carrier board includes a plurality of regularly distributed through holes, and the waterproof cover is provided with protruding holes that are consistent with the distribution pattern, position and shape of the through holes; The waterproof cover is arranged on the front of the LED carrier board, and the hole body is embedded in the through hole and protrudes from the back of the LED carrier board; A sealing layer is provided on at least one of the front and back sides of the LED carrier board; Connecting parts are provided between the holes, and the connecting parts connect the regularly arranged holes together; At least one side of the waterproof cover is a toothed edge structure, and the toothed edge structure is composed of a semi-hole body and the connecting part.

2. The display device according to claim 1, wherein The hole body includes a first hole body and a second hole body, the first hole body includes a first hole body front end face and a first hole body rear end face, the second hole body includes a second hole body front end face and a second hole body rear end face, the second hole body front end face is arranged on the first hole body rear end face, and the second hole body is embedded in the through hole and protrudes from the back of the LED carrier board.

3. The display device according to claim 2, wherein The inner hole shapes and sizes of the first hole body and the second hole body are the same, and the inner hole shapes of the first hole body and the second hole body are overlapped and connected together.

4. The display device according to claim 3, wherein The outer wall of the first hole body is higher than the outer wall of the second hole body.

5. The display device according to claim 4, wherein The rear end surface of the first hole body is attached to the non-through area around the through hole on the front surface of the LED carrier board.

6. The display device according to any one of claims 4 or 5, characterized in that The connecting portion is integrally arranged with the hole body. The connecting portion is arranged on the outer side wall of the first hole body and includes a bottom surface and a top surface. The bottom surface of the connecting portion is aligned with the rear end surface of the first hole body.

7. The display device according to claim 6, wherein The top surface of the connecting portion is aligned with the front end surface of the first hole body.

8. The display device according to claim 1, wherein The sealing layer includes a first sealing layer and a second sealing layer. The first sealing layer is located on the front of the LED carrier and is composed of a sealing layer unit. The sealing layer unit is formed by sealing a closed or semi-closed area surrounded by the outer wall of the first hole, the side wall of the connecting portion, and the non-penetrating area on the front of the LED carrier; The second sealing layer is located on the back of the LED carrier board and is formed by sealing the outer side walls of the second holes protruding from the back of the LED carrier board and the non-penetrating area on the back of the LED carrier board.

9. The display device according to claim 8, wherein It also includes an LED illuminator, which is arranged in a non-penetrating area of ​​the LED carrier board on the sealing layer unit area.

10. The display device according to claim 9, wherein The light-emitting surface of the LED light-emitting body exposes the sealing layer unit.

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