Sealing ring and LED display

Abstract

The present invention discloses a sealing ring, which is annular and includes a main body, a first wall portion extending toward the upper side of the main body, a second wall portion extending toward the upper side of the main body on the left side of the first wall portion, and a first groove portion provided between the first wall portion and the second wall portion in the left and right directions, wherein the top surface of the first wall portion is higher than the top surface of the second wall portion. The sealing ring of the present invention uses the first wall portion as the main sealing surface, and when the sealing ring is installed, the surface to be sealed is contacted by the first wall portion. Because the first groove portion is provided between the first wall portion and the second wall portion, when liquid, such as water, flows down the outer ring of the sealing ring, the water flows along the first wall portion to the first groove portion and is discharged. In addition, because the top surface of the first wall portion is higher than the top surface of the second wall portion, when there is too much water in the first groove portion, the water will be discharged after passing over the second wall portion, thereby effectively preventing water from seeping into the inner ring of the sealing ring.

Description

Technical Field

[0001] The present invention relates to the technical field of LED display, in particular to a sealing ring and an LED display screen using the sealing ring. Background Art

[0002] Currently, most outdoor LED displays are constructed from modules assembled into a cabinet, which is then assembled into an LED display. When LED displays are installed outdoors, moisture, dust, and foreign matter from the air can enter the display. Although existing LED displays have some internal components sealed, their sealing, especially waterproof, levels are insufficient. Therefore, water can easily enter the display during heavy rainfall, such as heavy rain or typhoons. Summary of the Invention

[0003] Aiming at the technical problem that the waterproof grade of the existing LED display screen is not enough, the present invention proposes a sealing ring and an LED display screen using the sealing ring.

[0004] The sealing ring is annular and includes a main body, a first wall portion extending toward the upper side of the main body is provided on the main body, a second wall portion extending toward the upper side of the main body is provided on the left side of the first wall portion, a first groove portion is provided between the first wall portion and the second wall portion in the left and right directions, and the top surface of the first wall portion is higher than the top surface of the second wall portion.

[0005] Preferably, a third wall portion is provided on the left side of the second wall portion, the third wall portion extends toward the left side of the main body, and the third wall portion is lower than the top surface of the second wall portion in the up-down direction of the main body.

[0006] Further preferably, a fourth wall portion is provided on the lower side of the third wall portion, the fourth wall portion extends toward the left side of the main body, and a second groove portion is provided between the fourth wall portion and the third wall portion in the vertical direction.

[0007] More preferably, the left side surface of the third wall portion is flush with the left side surface of the fourth wall portion.

[0008] Preferably, the side surface of the first groove portion adjacent to the first wall portion is arc-shaped, and the side surface of the first groove portion adjacent to the second wall portion is flat and parallel to the up-down direction of the main body.

[0009] Preferably, a fifth wall portion extending toward the lower side of the main body is provided on the lower side of the first wall portion, and a third groove portion is provided between the fifth wall portion and the first wall portion in the vertical direction.

[0010] Further preferably, the first wall portion and the fifth wall portion are respectively arc-shaped, and the right side surface of the fifth wall portion is flush with the right side surface of the first wall portion.

[0011] Further preferably, a side surface of the third groove portion adjacent to the first wall portion, and a side surface of the third groove portion adjacent to the fifth wall portion are both arc-shaped.

[0012] An LED display screen includes a shell, on which an LED light board is mounted, and the LED light board is connected to a first electrical connector; a power box, on which a second electrical connector is connected, and the second electrical connector is connected to the first electrical connector; and a sealing ring, which is arranged between the shell and the power box and clamped by the shell and the power box, the first electrical connector and the second electrical connector are accommodated in the sealing ring, and the first wall portion is in contact with the power box.

[0013] Preferably, it further comprises a drainage baffle, which is arranged to be located above the sealing ring after the shell and the power box are mounted on each other.

[0014] The sealing ring of the present invention utilizes the first wall as the primary sealing surface. When the sealing ring is installed, the surface to be sealed is contacted by the first wall. Because a first groove is provided between the first and second walls, when liquid, such as water, flows down the upper surface of the sealing ring (the outer ring), the water flows along the first wall into the first groove and is drained away. Furthermore, because the top surface of the first wall is higher than the top surface of the second wall, if excessive water accumulates in the first groove, it will flow over the second wall and be drained away. This effectively prevents water from seeping into the lower surface of the sealing ring (the inner ring). BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a perspective view of the sealing ring of the present invention as viewed from the right side;

[0016] Figure 2 yes Figure 1 A three-dimensional view of the sealing ring viewed from the left side;

[0017] Figure 3 yes Figure 1 Cross-sectional view of the sealing ring at AA;

[0018] Figure 4 It is a schematic diagram of the sealing state of the sealing ring;

[0019] Figure 5 This is an exploded view of some parts of the LED display;

[0020] Figure 6 It is a cross-sectional diagram of the installation structure of the sealing ring on the LED display screen. DETAILED DESCRIPTION

[0021] The following will clearly and completely describe the concept and technical effects of the present invention in conjunction with the embodiments to fully understand the purpose, features and effects of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, other embodiments obtained by those skilled in the art without creative work are all within the scope of protection of the present invention.

[0022] In the description of the embodiments of the present invention, if orientation descriptions are involved, the orientations or positional relationships indicated by "up", "down", "front", "back", "left", "right", etc. are based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as limiting the present invention.

[0023] In the description of the embodiments of the present invention, if a certain feature is referred to as being "set", "fixed", "connected" or "installed" on another feature, it may be directly set, fixed or connected on the other feature, or it may be indirectly set, fixed, connected or installed on the other feature. In the description of the embodiments of the present invention, if "several" is involved, it means more than one; if "multiple" is involved, it means more than two; if "greater than", "less than" or "exceeds" is involved, it should be understood as not including the number itself; if "above", "below" or "within" is involved, it should be understood as including the number itself. If "first" or "second" is involved, it should be understood as being used to distinguish technical features, and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0024] Figure 1 This is a three-dimensional view of the sealing ring 100 viewed from the right side. Figure 2 This is a three-dimensional view of the sealing ring 100 viewed from the left side. Figure 3 This is a cross-sectional view of the sealing ring 100 at AA. Figure 4 is a schematic diagram of the sealing state of the sealing ring 100, refer to Figures 1 to 4The seal ring 100 of this embodiment is annular, such as a circular ring, an elliptical ring, or any other closed loop shape. The seal ring 100 can be made of a known material such as rubber. For ease of description, the outer ring 101 located above the seal ring 100 is referred to as the "upper side," the inner ring 102 located above the seal ring 100 is referred to as the "lower side," the side located at one axial end of the seal ring 100, serving as the main sealing surface 103, is referred to as the "right side," and the side located at the other axial end of the seal ring 100, serving as the mounting surface 104 of the seal ring 100, is referred to as the "left side." The cross-sectional portion of the seal ring 100 is referred to as the main body 110.

[0025] The main body 110 is provided with a first wall portion 120 extending toward the upper side of the main body 110. A second wall portion 130 extending toward the upper side of the main body 110 is provided on the left side of the first wall portion 120. A first groove portion 140 is provided between the first wall portion 120 and the second wall portion 130 in the left and right directions. The top surface of the first wall portion 120 is higher than the top surface of the second wall portion 130. For example, the top surface of the first wall portion 120 is higher than the top surface of the second wall portion 130 by a distance H. The distance H can be designed according to actual needs. It should be noted that Figure 4 From the perspective of the main body 110 (ie, the cross section of the sealing ring 100), the first wall portion 120 extends toward the upper side of the main body 110, but from the perspective of the entire sealing ring 100 (refer to Figure 1 、 Figure 2 ), the first wall portion 120 is also annular. Similarly, the second wall portion 130, the first groove portion 140 and the following technical features are all annular when viewed from the sealing ring 100 as a whole.

[0026] The first wall 120 serves as the main sealing surface 103. When the sealing ring 100 is installed, the surface 301 to be sealed is contacted by the first wall 120. Since the first groove 140 is provided between the first wall 120 and the second wall 130, when liquid such as water seeps into the upper surface of the sealing ring 100 (the outer ring 101 of the sealing ring 100), the water flows along the first wall 120 to the first groove 140, flows down along the first groove 140 and is discharged from the sealing ring 100 (refer to Figure 2 ), so as not to pass over the first wall portion 120. Therefore, the first groove portion 140 can form a first drainage defense line for the sealing ring 100. In addition, because the top surface of the first wall portion 120 is higher than the top surface of the second wall portion 130, when there is too much water in the first groove portion 140, the water will be drained after passing over the second wall portion 130. Therefore, the second wall portion 130 forms a second drainage defense line for the sealing ring 100, which can effectively prevent water from seeping into the inner ring 102 of the sealing ring 100.

[0027] In an optional embodiment, the first wall portion 120 is arc-shaped so that when the sealing ring 100 is pressed, the first wall portion 120 can be fully expanded, thereby allowing the first wall portion 120 to fully fit the surface 301 sealed by the sealing ring 100.

[0028] In an optional embodiment, a side surface 141 of the first groove portion 140 adjacent to the first wall portion 120 is arc-shaped. This allows the first wall portion 120 to fully expand in a direction opposite to the surface 301 sealed by the sealing ring 100 when the sealing ring 100 is pressed together. This also facilitates liquid, such as water, to flow along the first wall portion 120 to the first groove portion 140, where it then flows down the first groove portion 140 and is discharged from the sealing ring 100. Furthermore, a side surface 142 of the first groove portion 140 adjacent to the second wall portion 130 is flat and parallel to the vertical direction of the main body 110. By configuring the side surface 142 adjacent to the first groove portion 140 and the second wall portion 130 as a flat surface, it is possible to increase the difficulty of water flowing over the second wall portion 130, thereby preventing water from flowing over the second wall portion 130 to a certain extent.

[0029] In an optional embodiment, a third wall portion 150 is provided on the left side of the second wall portion 130. The third wall portion 150 extends toward the left side of the main body 110 and is lower than the top surface of the second wall portion 130 in the vertical direction of the main body 110. Here, the left side surface 151 of the third wall portion 150 serves as the mounting surface 104 of the sealing ring 100. When the sealing ring 100 is installed, the left side surface 151 of the third wall portion 150 is aligned with the mounting groove 220 of the sealing ring 100, thereby preventing water from seeping into the inner ring 102 of the sealing ring 100 through the mounting surface 104 of the sealing ring 100. In addition, since the third wall portion 150 is lower than the top surface of the second wall portion 130 in the up-down direction of the main body 110, a step 105 is formed between the third wall portion 150 and the second wall portion 130 in the up-down direction. When the sealing ring 100 is installed, a gap 201 is formed between the step 105, the third wall portion 150 and the installation groove 220 of the sealing ring 100. Thus, the gap 201 between the third wall portion 150 and the second wall portion 130 in the up-down direction can serve as a third drainage defense line, and the water that crosses the second wall portion 130 from the first groove portion 140 and enters the gap 201 will flow out along the gap 201, thereby further preventing water from seeping into the inner ring 102 of the sealing ring 100 through the left side surface 151 of the third wall portion 150.

[0030] In an optional embodiment, a fourth wall portion 160 is provided below the third wall portion 150. The fourth wall portion 160 extends toward the left side of the main body 110, and a second groove portion 170 is provided between the fourth wall portion 160 and the third wall portion 150 in the vertical direction. Furthermore, the left side surface 151 of the third wall portion 150 and the left side surface 161 of the fourth wall portion 160 are flush. Here, the left side surface 161 of the fourth wall portion 160 also serves as the mounting surface 104 of the sealing ring 100. When the sealing ring 100 is installed, the left side surfaces 151 and 161 of the third wall portion 150 and the fourth wall portion 160 both align with the mounting groove 220 of the sealing ring 100, thereby further preventing water from seeping into the inner ring 102 of the sealing ring 100 via the mounting surface 104 of the sealing ring 100. Furthermore, because the second groove 170 is provided between the third wall 150 and the fourth wall 160, even if water seeps through the left side surface 151 of the third wall 150, the water will enter the second groove 170 and flow out along the annular second groove 170. Thus, the second groove 170 can serve as a fourth drainage defense line, preventing water from seeping into the inner ring 102 of the sealing ring 100 via the left side surface 161 of the fourth wall 160.

[0031] Therefore, the sealing ring 100 of this embodiment can effectively prevent water from penetrating into the inner ring 102 of the sealing ring 100 because multiple drainage lines are provided between the outer ring 101 and the inner ring 102, thereby greatly improving the sealing function of the sealing ring 100.

[0032] In an optional embodiment, a fifth wall portion 180 is provided on the lower side of the first wall portion 120, extending toward the lower side of the main body 110. The fifth wall portion 180 is arc-shaped, so that when the sealing ring 100 is pressed together, the fifth wall portion 180 can be fully expanded, thereby fully contacting the surface 301 sealed by the sealing ring 100. The provision of the fifth wall portion 180 can prevent water from seeping through the surface 301 sealed by the first wall portion 120 and infiltrating the inner ring 102 of the sealing ring 100. To ensure that the first wall portion 120 and the fifth wall portion 180 simultaneously fully contact the surface 301 to be sealed by the sealing ring 100, the right side surface 181 of the fifth wall portion 180 is flush with the right side surface 121 of the first wall portion 120.

[0033] Furthermore, a third groove 190 is provided between the fifth wall portion 180 and the first wall portion 120 in the vertical direction. The provision of the third groove 190 not only facilitates the full expansion of the first wall portion 120 and the fifth wall portion 180 on the surface 301 to be sealed, but also serves as a fifth drainage defense line. After water seeps through the right side surface 121 of the first wall portion 120, it can flow out along the annular third groove 190.

[0034] In order to further enable the first wall portion 120 and the fifth wall portion 180 to unfold smoothly in the up and down directions on their sealed surfaces 201, the side surface 191 on the side adjacent to the third groove portion 190 and the first wall portion 120, and the side surface 192 on the side adjacent to the third groove portion 190 and the fifth wall portion 180 are respectively arc-shaped.

[0035] Figure 5 This is an exploded view of some parts of the LED display. Figure 6 This is a cross-sectional view of the installation structure of the sealing ring 100 on the LED display screen. Figure 5 and Figure 6 , the waterproof sealing structure of the LED display screen with the sealing ring 100 is described in detail.

[0036] The LED display screen includes a housing 200 and a power box 300. The housing 200 is provided with an LED light board 210. A first electrical connector 211, such as a male end of a power connector or a signal transmission connector, is connected to the LED light board 210. The power box 300 is provided with a second electrical connector 310, such as a female end of a power connector or a signal transmission connector. The housing 200 is mounted on the power box 300 so that the first electrical connector 211 is plugged into the second electrical connector 310. The aforementioned sealing ring 100 is disposed between the housing 200 and the power box 300. After the housing 200 and the power box 300 are mounted to each other, the power box 300 and the housing 200 clamp the sealing ring 100. The first wall 120 and the fifth wall 180 of the sealing ring 100 serve as the main sealing surface 103 and are in contact with the surface 301 of the power box 300 that needs to be sealed. The third wall 150 and the fourth wall 160 of the sealing ring 100 serve as the mounting portion and are mounted to the housing 200. The first electrical connector 211 and the second electrical connector 310 are accommodated in the inner ring 102 of the sealing ring 100 .

[0037] Since outdoor LED screens are usually installed vertically, various connectors, electrical components, etc. are stored in the power box 300, making it difficult for water to enter. Water usually penetrates from the top of the entire LED screen through the installation gap between the power box 300 and the housing 200, and enters the power box 300 through the second electrical connector 310 installed in the power box 300. Therefore, by providing a sealing ring 100 between the power box 300 and the housing 200 of the LED screen, and accommodating the interface within the inner ring of the sealing ring 100, it is possible to prevent water and the like from entering the space surrounded by the sealing ring 100. For example, a mounting groove 220 is provided on the housing 200, and the sealing ring 100 is accommodated in the mounting groove 220. Then, the first electrical connector 211 of the LED light board 210 is inserted into the second electrical connector 310 of the power box 300, and then the power box 300 and the housing 200 are locked. Thus, the electrical connectors 211 and 310 of the LED display can be accommodated in the inner ring of the sealing ring 100 , thereby preventing water seepage into the connectors 211 and 310 , thereby preventing short circuits and the like.

[0038] In an optional embodiment, a drainage baffle 320 may be further provided above the sealing ring 100. The drainage baffle 320 may be provided on either the power box 300 or the housing 200, as long as the drainage baffle 320 is located above the sealing ring 100 after the power box 300 is installed in the housing 200. By providing the drainage baffle 320 above the sealing ring 100, water that penetrates from above the LED display along the installation gap between the power box 300 and the housing 200 can be drained away, greatly reducing the amount of water that directly enters the installation groove 220 of the sealing ring 100, thereby preventing the drainage defense lines of the sealing ring 100 from being breached due to excessive water.

[0039] The various specific technical features described in the above specific embodiments can be combined in any way without contradiction. To avoid unnecessary repetition, the present invention does not separately explain various possible combinations.

[0040] The above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit the same. Any modifications or equivalent replacements that do not depart from the scope of the present invention should be included in the technical solutions of the present invention.

Claims

1. Sealing ring, characterized in that, The sealing ring is annular and is compressed in the axial direction to perform sealing. The sealing ring includes a main body, a first wall portion extending toward the upper side of the main body is provided on the main body, the right side surface of the first wall portion in the axial left-right direction of the sealing ring serves as a main sealing surface, a second wall portion extending toward the upper side of the main body is provided on the left side of the first wall portion, a first groove portion is provided between the first wall portion and the second wall portion in the left-right direction, the top surface of the first wall portion is higher than the top surface of the second wall portion, and the left side of the sealing ring has a mounting surface; A third wall portion is provided on the left side of the second wall portion, the third wall portion extending toward the left side of the main body, and the third wall portion is lower than the top surface of the second wall portion in the vertical direction of the main body; A fourth wall portion is provided on the lower side of the third wall portion, the fourth wall portion extending toward the left side of the main body, and a second groove portion is provided between the fourth wall portion and the third wall portion in the vertical direction; A fifth wall portion extending toward the lower side of the main body is provided on the lower side of the first wall portion, and a third groove portion is provided between the fifth wall portion and the first wall portion in the vertical direction; In the sealing state of the sealing ring, the right side surface of the first wall portion and the right side surface of the fifth wall portion both fit in contact with the surface to be sealed by the sealing ring.

2. The sealing ring according to claim 1, characterized in that: The left side surface of the third wall portion is flush with the left side surface of the fourth wall portion.

3. The sealing ring according to claim 1, characterized in that: The side surface of the first groove portion adjacent to the first wall portion is arc-shaped, and the side surface of the first groove portion adjacent to the second wall portion is flat and parallel to the up-down direction of the main body.

4. The sealing ring according to claim 1, characterized in that The first wall portion and the fifth wall portion are respectively arc-shaped, and a right side surface of the fifth wall portion is flush with a right side surface of the first wall portion.

5. The sealing ring according to claim 1 or 4, characterized in that: A side surface of the third groove portion adjacent to the first wall portion and a side surface of the third groove portion adjacent to the fifth wall portion are both arc-shaped. 6.LED display, characterized in that, include a housing, wherein an LED light board is mounted on the housing, and the LED light board is connected to a first electrical connector; A power supply box, wherein the power supply box is connected to a second electrical connector, and the second electrical connector is connected to the first electrical connector; The sealing ring according to any one of claims 1 to 5 is arranged between the shell and the power box and clamped by the shell and the power box, the first electrical connector and the second electrical connector are accommodated in the sealing ring, and the first wall portion and the power box are in contact.

7. The LED display screen according to claim 6, characterized in that: It also includes a drainage baffle, which is arranged to be located above the sealing ring after the shell and the power box are installed with each other.

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