A waterproof and dustproof sealed LED digital tube

Abstract

This utility model relates to the field of LED display equipment technology and discloses a waterproof and dustproof sealed LED digital tube. It includes a housing and a protective assembly covering its top. The protective assembly consists of a protective plate and a detachable display panel embedded in the middle. The housing and the protective assembly are fixedly connected by a self-locking mechanism, and the protective plate and the display panel are detachably connected by a replacement mechanism. The self-locking mechanism uses a latch on the base to insert into the housing, squeezing a ball bearing and compressing a tension spring, ultimately locking the locking mechanism between the stabilizing plate and the ball bearing. The replacement mechanism uses downward pressing of a pressing block to drive a connecting rod through lever transmission, causing the latch to move laterally against spring resistance. This utility model, combined with a sealing ring and sealing adhesive layer structure, solves the problems of difficult disassembly and assembly and poor sealing in traditional equipment, offering the advantages of convenient installation, stable connection, support for modular independent maintenance, and superior waterproof and dustproof performance.

Description

Technical Field

[0001] This utility model relates to the field of LED display device structure technology, and in particular to a waterproof and dustproof sealed LED digital tube. Background Technology

[0002] LED digital tubes, as a fundamental electronic display component, are widely used in various instruments, industrial control panels, and outdoor information displays due to their high brightness, fast response speed, and long lifespan. Considering that actual usage environments often involve rain or dust accumulation, a sealed protective casing is typically required to prevent corrosion or short circuits in the internal delicate electronic circuitry.

[0003] However, in existing technical solutions, to meet stringent waterproof and dustproof standards, the external protective structure of LED digital tubes is mostly made of integrated injection molding, or uses multiple screws and glue to firmly fix the display components inside the shell. While this design approach ensures a certain degree of sealing, it greatly sacrifices the ease of installation and subsequent maintenance of the equipment. When it is necessary to install the digital tube onto the equipment, it often involves cumbersome drilling and tightening procedures, resulting in low installation efficiency.

[0004] A more serious problem is that when the internal display module develops a dead pixel or a circuit fault requiring repair or replacement, the existing rigid fixing structure makes disassembly extremely difficult. Maintenance personnel often need to destructively disassemble the casing or spend a lot of time removing fasteners. This not only increases maintenance costs but also easily damages the original sealing interface during disassembly and assembly, resulting in a significant decrease in the waterproof performance of the equipment after restoration. This makes it difficult to meet the needs of modular maintenance that is quick, non-destructive, and reusable.

[0005] Therefore, this utility model proposes a waterproof and dustproof sealed LED digital tube to overcome the shortcomings of the prior art. Utility Model Content

[0006] In existing technologies, LED digital tubes are typically fixed using screws or glue, which makes the installation process cumbersome and time-consuming. Furthermore, when the display components malfunction and require repair, the rigid connection makes independent disassembly and replacement difficult, resulting in high maintenance costs and potential damage to the original sealing structure during disassembly and assembly, leading to equipment protection failure and reduced reliability. This utility model aims to provide a waterproof and dustproof sealed LED digital tube with an improved structure that can effectively solve the above problems.

[0007] This utility model provides a waterproof and dustproof sealed LED digital tube, including: a housing, and a protective component covering the top of the housing, the protective component including a protective plate and a display plate detachably embedded in the middle of the protective plate; a self-locking mechanism connecting the housing and the protective component, and a replacement mechanism connecting the protective plate and the display plate.

[0008] The self-locking mechanism includes a mounting plate fixedly connected to the bottom surface of the protective plate, a base fixedly connected to the top surface of the outer shell, and a housing disposed at the bottom of the mounting plate. A stabilizing plate is fixedly connected inside the housing, and a tension spring and a ball are also accommodated inside the housing. One end of the tension spring is fixedly connected to the inner wall of the housing, and the other end abuts against the stabilizing plate or the ball. A latch extending upward and capable of being inserted into the housing is fixedly connected to the base, and the latch engages between the stabilizing plate and the ball.

[0009] Furthermore, the replacement mechanism has a locking block fixedly connected to the side wall of the display panel, a base fixedly connected to the side wall of the protective plate, and a pressing block and a buckle slidably connected to the base; the base is also provided with a connecting rod, a spring one and a spring two, the two ends of the connecting rod are respectively hinged to or abutted against the pressing block and the buckle, and the buckle is engaged in the slot of the locking block under the elastic force of the spring one.

[0010] Preferably, a locking channel is formed between the stabilizing plate and the ball in the self-locking mechanism for the insertion of the latch. The top of the latch is provided with an arc-shaped or conical guide surface, and the side of the latch is provided with a groove that cooperates with the ball. When the protective component is pressed down, the latch can squeeze the ball and compress the tension spring, thereby smoothly entering the locking channel to complete the locking.

[0011] Preferably, the base of the replacement mechanism has a cavity inside, and the middle part of the connecting rod is rotatably connected to the inner wall of the cavity through a rotating shaft to form a lever structure; the pressing block extends from the top of the base, and the buckle extends from the side of the base; when the pressing block is pressed down, the connecting rod drives the buckle to overcome the resistance of the spring and move away from the buckle, thereby releasing the lock on the display panel.

[0012] Preferably, the second spring is disposed between the pressing block and the inner wall of the base, or between the connecting rod and the inner wall of the base, for resetting the pressing block upward after the pressing operation is completed.

[0013] Preferably, the protective plate is made of waterproof PVC board, and a first sealing ring is provided at the edge of the protective plate where it fits with the edge of the outer shell. The sealing at the connection of the shell is achieved by the compression deformation of the first sealing ring.

[0014] Preferably, the display panel includes a digital display module and a transparent glass plate covering the digital display module. The periphery of the transparent glass plate is sealed to the body of the display panel with sealant to prevent dust and moisture from seeping into the display area.

[0015] Preferably, the latch is configured as an L-shaped or U-shaped block protruding from the side of the display panel, and the end of the buckle is provided with a barb structure that matches the latch to enhance the mechanical stability when the two are engaged.

[0016] Preferably, a plurality of self-locking mechanisms are provided between the protective component and the housing, and the plurality of self-locking mechanisms are evenly distributed along the circumference of the housing to ensure force balance and connection stability during installation.

[0017] This utility model has the following beneficial effects:

[0018] 1. This utility model solves the problems of cumbersome installation process of LED digital tubes, difficulty in disassembly and unreliable connection caused by fixing with screws or glue, by setting a self-locking mechanism, using the tongue to squeeze the ball and the spring to rebound to achieve locking. It achieves the technical effect of automatic locking when pressed down, convenient and efficient installation and stable connection.

[0019] 2. This utility model, by setting a replacement mechanism, uses a pressing block in conjunction with a connecting lever to drive the buckle to move and release the buckle. This solves the problems in the prior art where it is difficult to replace the display component independently after it is damaged, and the maintenance costs are high and the efficiency is low because the entire outer shell needs to be disassembled during maintenance. It achieves the technical effect of quickly separating the display board and the protection board without special tools, realizing modular replacement and convenient maintenance.

[0020] 3. This utility model solves the problems of poor sealing performance, easy water and dust ingress, internal circuit short circuit or blurred display caused by setting multiple sealing rings between the protection board and the outer shell and between the display board and the protection board, in conjunction with the transparent glass plate and sealing adhesive layer on the display surface. It achieves the technical effect of building a multi-level tight protection system, effectively isolating external moisture and dust, ensuring the safety of internal circuits and extending the service life of the equipment. Attached Figure Description

[0021] Figure 1 This is a three-dimensional schematic diagram of a waterproof and dustproof sealed LED digital tube proposed in this utility model;

[0022] Figure 2 This is a schematic diagram of the structure of a tension spring for a waterproof, dustproof, and sealed LED digital tube according to the present invention.

[0023] Figure 3 This is a schematic diagram of the structure of a waterproof and dustproof sealed LED digital tube housing proposed in this utility model;

[0024] Figure 4 for Figure 3 Enlarged view of point A in the middle.

[0025] Legend:

[0026] 1. Outer shell;

[0027] 2. Protection components; 21. Protection board; 22. Display board;

[0028] 3. Self-locking mechanism; 31. Mounting plate; 32. Housing; 33. Tension spring; 34. Stabilizing plate; 35. Ball bearing; 36. Clamping tongue; 37. Base;

[0029] 4. Replacement mechanism; 41. Locking block; 42. Pressing block; 43. Connecting rod; 44. Buckle; 45. Spring 1; 46. Spring 2; 47. Base. Detailed Implementation

[0030] Example:

[0031] Reference Figures 1 to 4 This utility model provides a waterproof and dustproof sealed LED digital tube, which aims to solve the technical problems of existing LED digital tube devices that are usually fixed with screws or glue, making disassembly and maintenance, especially the replacement of the display panel, difficult, and lacking an effective structure that combines quick installation with waterproof and dustproof protection when used outdoors, resulting in low maintenance efficiency and unstable protective performance.

[0032] like Figure 1 and Figure 3 As shown, the waterproof and dustproof sealed LED digital tube includes a housing 1 and a protective component 2 covering the top of the housing 1. The housing 1 serves as the bottom support body of the entire device, used to house the basic circuit and support the components above. The protective component 2 is used to display digital signals and provide waterproof and dustproof protection for the internal components. The housing 1 and the protective component 2 are fixedly connected by a self-locking mechanism 3. This connection method allows the protective component 2 to be quickly installed on or removed from the housing 1. The protective component 2 is equipped with a replacement mechanism 4. The protective component 2 includes a protective plate 21 and a display plate 22 detachably embedded in the middle of the protective plate 21. The protective plate 21 and the display plate 22 are detachably connected by the replacement mechanism 4. When maintenance or replacement of the display module is required, the display plate 22 and the protective plate 21 can be separated by the replacement mechanism 4.

[0033] like Figure 1As shown, the protective plate 21 is made of waterproof PVC board material. The waterproof properties of PVC material effectively prevent external moisture from entering the device. A first sealing ring is provided at the edge of the protective plate 21 where it fits with the edge of the outer shell 1. The first sealing ring is deformed under pressure to fill the gap between the outer shell 1 and the protective plate 21, thereby achieving a seal at the connection of the shell 32. The display plate 22 includes a digital display module and a transparent glass plate covering the digital display module. The transparent glass plate is used to prevent dust from damaging the circuit and to maintain the display clarity. The periphery of the transparent glass plate is sealed to the body of the display plate 22 with sealant, thereby forming a closed structure in the display area to prevent dust and moisture from seeping in.

[0034] like Figure 2 and Figure 3 As shown, the self-locking mechanism 3 includes a mounting plate 31 fixedly connected to the bottom surface of the protective plate 21, a base 37 fixedly connected to the top surface of the outer shell 1, and a housing 32 disposed at the bottom of the mounting plate 31. The mounting plate 31 is a rectangular or circular plate structure and is fixed to the side of the protective plate 21 facing the outer shell 1 by bolts or welding. The housing 32 is fixedly connected to the side of the mounting plate 31 away from the protective plate 21. The housing 32 has a receiving cavity inside, in which a stabilizing plate 34 is fixedly connected. The receiving cavity also contains a tension spring 33 and a ball 35. One end of the tension spring 33 is fixedly connected to the inner wall of the housing 32, and the other end abuts against the stabilizing plate 34 or the ball 35. The stabilizing plate 34 is fixed to the inner wall of the housing 32 and restricts the range of motion of the ball 35. A locking channel for inserting external components is formed between the stabilizing plate 34 and the ball 35.

[0035] A latch 36 extending upward and insertable into the housing 32 is fixedly connected to the base 37. The position of the latch 36 corresponds to the position of the housing 32. The top of the latch 36 is provided with an arc-shaped or conical guide surface, which is used to guide the latch 36 to push away the ball 35 during insertion. The side of the latch 36 is provided with a groove that cooperates with the ball 35. When the latch 36 is fully inserted into the housing 32, the ball 35 is locked into the groove under the elastic force of the tension spring 33, thereby locking the latch 36 between the stabilizing plate 34 and the ball 35, realizing the automatic locking of the protective component 2 and the housing 1.

[0036] Reference Figure 3 and Figure 4The replacement mechanism 4 has mating components installed on different carriers, including a locking block 41 fixedly connected to the side wall of the display panel 22 and a base 47 fixedly connected to the side wall of the protective plate 21. The locking block 41 has an outwardly protruding L-shaped or U-shaped solid structure, and a locking groove for locking is provided on the locking block 41. The locking block 41 serves as the main force support point of the display panel 22 and is used to anchor the display panel 22 inside the protective component 2. The base 47 serves as the mounting carrier for the movable parts and is fixedly connected to the inner side wall of the protective plate 21 by screws or adhesive. Its position corresponds to the position of the locking block 41.

[0037] Meanwhile, a set of press-to-unlock components is correspondingly provided on the base 47. The components include a press block 42 and a latch 44 that are slidably connected to the base 47. A part of the press block 42 extends to the outside of the protective plate 21 or is located in an easily operable position to receive the user's pressing force. The latch 44 is slidably installed in the side groove of the base 47, and its end is provided with a barb structure that matches the shape of the slot of the latch block 41. In the assembled state, the barb structure of the latch 44 is embedded in the slot of the latch block 41. This mechanical cooperation structure ensures that the display panel 22 is fixed in the vertical direction and prevents it from falling off under gravity or vibration.

[0038] The base 47 contains a connecting rod 43, a first spring 45, and a second spring 46. The connecting rod 43 is connected between the pressing block 42 and the latch 44. The middle part of the connecting rod 43 is rotatably connected to a fulcrum inside the base 47 to form a lever structure. Alternatively, the connecting rod 43 and the latch 44 can be driven by a sloping slider structure. Its function is to convert the longitudinal displacement of the pressing block 42 into the lateral displacement of the latch 44. The first spring 45 abuts against the rear of the latch 44 to continuously provide elastic force to move the latch 44 toward the latch block 41, thereby maintaining the normally closed and locked state. The second spring 46 abuts against the bottom of the connecting rod 43 or the pressing block 42 to provide a reverse restoring force to ensure that the pressing block 42 can automatically reset after operation.

[0039] As a preferred embodiment, in order to ensure the smoothness of the self-locking mechanism 3 during insertion and the stability after locking, the top of the latch 36 is designed as an arc-shaped or conical guide structure. This guide structure is configured to reduce resistance and guide the ball 35 to move laterally during insertion. The side wall of the latch 36 is provided with a groove that matches the curvature of the ball 35 surface. The stabilizing plate 34 is fixed to the inner wall of the housing 32. The stabilizing plate 34 and the ball 35 define a locking channel for the latch 36 to be inserted and locked. In order to improve the uniformity of force and shock resistance of the connection between the protective component 2 and the housing 1, multiple self-locking mechanisms 3 are evenly distributed in the circumference of the housing 1. Each self-locking mechanism 3 works independently to provide multi-point fixation.

[0040] In another preferred embodiment, to optimize the transmission efficiency and structural compactness of the press-to-unlock assembly, the base 47 has a cavity inside to accommodate the connecting rod 43. The middle part of the connecting rod 43 is rotatably connected to the inner wall of the cavity through a pivot to form a lever fulcrum. The pressing block 42 extends from the top of the base 47 and is hinged or abutted to one end of the connecting rod 43. The buckle 44 extends from the side of the base 47 and is hinged or abutted to the other end of the connecting rod 43. The second spring 46 is disposed between the pressing block 42 and the inner wall of the base 47. The second spring 46 is always in a compressed or uncompressed state and is used to apply a continuous upward reset force to the pressing block 42 to ensure that the connecting rod 43 remains reset in the non-operating state.

[0041] As a further preferred embodiment, in order to construct a multi-level sealing protection system to meet the usage requirements of harsh outdoor environments, a first sealing ring is provided at the connection interface between the protective plate 21 and the outer shell 1. The first sealing ring is embedded in the groove of the edge of the protective plate 21 and surrounds the protective plate 21. When the protective component 2 is locked onto the outer shell 1, the first sealing ring is compressed and undergoes elastic deformation to fill the gap of the rigid contact surface. The connection joint between the transparent glass plate of the display panel 22 and the body of the display panel 22 is filled with a sealant layer. In addition, a second sealing ring is provided at the mounting joint between the protective plate 21 and the display panel 22. The second sealing ring surrounds the outer peripheral wall of the display panel 22 to prevent moisture from entering the interior through the disassembly and assembly gap of the display panel 22.

[0042] In another preferred embodiment, in order to improve the engagement reliability of the replacement mechanism 4 and prevent accidental disengagement, the locking block 41 is constructed as an L-shaped or U-shaped block protruding from the side of the display panel 22. This geometry increases the engagement depth with the buckle 44. The end of the buckle 44 is integrally formed with a barb structure that matches the shape of the locking block 41. Under the pushing force of the spring 45, the barb structure can tightly hook the inner side of the locking block 41, forming a mechanical interlocking structure to prevent the display panel 22 from falling vertically.

[0043] The working principle is as follows:

[0044] During overall assembly or installation, the operator needs to align the protective component 2 with the outer shell 1 and apply downward pressure. The latch 36 on the base 37 then aligns with the opening at the bottom of the shell 32 and inserts upward. The guide surface at the top of the latch 36 first contacts the ball 35 and applies a lateral force to it. After being subjected to force, the ball 35 overcomes the resistance of the tension spring 33 and compresses the tension spring 33 to retract to the side. When the latch 36 continues to penetrate until the groove on its side wall is at the same level as the ball 35, the tension spring 33 releases the accumulated elastic potential energy and pushes the ball 35 back to its original position, so that the ball 35 is embedded in the groove of the latch 36. At this time, the stabilizing plate 34 restricts the longitudinal displacement of the ball 35, and the latch 36 is firmly locked inside the shell 32, thereby realizing the automatic locking and fixing of the protective component 2 and the outer shell 1. At the same time, the first sealing ring is deformed by pressure to complete the waterproof sealing between the objects.

[0045] When the internal display panel 22 needs to be replaced or maintained, there is no need to disassemble the entire outer casing 1. The operator only needs to press down the pressing block 42. During the pressing process, the pressing block 42 compresses the second spring 46 and drives the connecting rod 43 to move. The connecting rod 43 uses the lever principle or the inclined plane transmission principle to convert the vertical displacement of the pressing block 42 into the lateral displacement of the buckle 44, which drives the buckle 44 to overcome the elastic force of the first spring 45 and retract into the base 47. When the barb at the end of the buckle 44 completely disengages from the slot of the buckle 41, the buckle 41 is unrestrained, and the operator can then separate and remove the display panel 22 from the protective plate 21.

[0046] When reinstalling the display panel 22 after maintenance, align the display panel 22 with the mounting position of the protection plate 21 and push it in. The end of the locking block 41 presses against the buckle 44 to temporarily retract it. When the locking block 41 is pushed in to the predetermined depth, the first spring 45 pushes the buckle 44 to quickly reset and re-lock into the slot of the locking block 41. After releasing the pressing block 42, the second spring 46 pushes the pressing block 42 and the connecting rod 43 to reset to the initial state. At this time, the second sealing ring and the sealing adhesive layer resume their sealing function to ensure the dustproof and waterproof performance of the internal circuit of the device.

Claims

1. A waterproof and dustproof sealed LED digital tube, comprising: The outer casing (1) and a protective assembly (2) covering the top of the outer casing (1), the protective assembly (2) including a protective plate (21) and a display panel (22) detachably embedded in the middle of the protective plate (21); The feature is that the outer shell (1) and the protective component (2) are fixedly connected by a self-locking mechanism (3), and the protective plate (21) and the display plate (22) are detachably connected by a replacement mechanism (4); The self-locking mechanism (3) includes a mounting plate (31) fixedly connected to the bottom surface of the protective plate (21), a base (37) fixedly connected to the top surface of the outer shell (1), and a housing (32) disposed at the bottom of the mounting plate (31). A stabilizing plate (34) is fixedly connected inside the housing (32). A tension spring (33) and a ball (35) are also accommodated inside the housing (32). One end of the tension spring (33) is fixedly connected to the inner wall of the housing (32), and the other end abuts against the stabilizing plate (34) or the ball (35). A latch (36) extending upward and capable of being inserted into the housing (32) is fixedly connected to the base (37). The latch (36) is engaged between the stabilizing plate (34) and the ball (35). The replacement mechanism (4) includes a locking block (41) fixedly connected to the side wall of the display panel (22), a base (47) fixedly connected to the side wall of the protective plate (21), and a pressing block (42) and a buckle (44) slidably connected to the base (47). The base (47) is also provided with a connecting rod (43), a spring one (45) and a spring two (46). The two ends of the connecting rod (43) are respectively hinged to or abutted against the pressing block (42) and the buckle (44). The buckle (44) is engaged in the slot of the locking block (41) under the elastic force of the spring one (45).

2. The waterproof and dustproof sealed LED digital tube according to claim 1, characterized in that, A locking channel is formed between the stabilizing plate (34) and the ball (35) for the insertion of the latch (36). The top of the latch (36) is provided with an arc-shaped or conical guide surface, and the side of the latch (36) is provided with a groove that cooperates with the ball (35). When the protective component (2) is pressed down, the latch (36) can squeeze the ball (35) to compress the tension spring (33) and enter the locking channel.

3. The waterproof and dustproof sealed LED digital tube according to claim 1, characterized in that, The base (47) has a cavity inside. The middle part of the connecting rod (43) is rotatably connected to the inner wall of the cavity through a rotating shaft to form a lever structure. The pressing block (42) extends from the top of the base (47), and the buckle (44) extends from the side of the base (47). When the pressing block (42) is pressed down, the connecting rod (43) drives the buckle (44) to overcome the resistance of the spring (45) and move away from the buckle (41).

4. A waterproof and dustproof sealed LED digital tube according to claim 1, characterized in that, The second spring (46) is disposed between the pressing block (42) and the inner wall of the base (47), or between the connecting rod (43) and the inner wall of the base (47), for the purpose of resetting the pressing block (42) upward.

5. A waterproof and dustproof sealed LED digital tube according to claim 1, characterized in that, The protective plate (21) is made of waterproof PVC board, and a first sealing ring is provided at the edge of the protective plate (21) where it fits against the edge of the outer shell (1).

6. A waterproof and dustproof sealed LED digital tube according to claim 1, characterized in that, The display panel (22) includes a digital display module and a transparent glass plate covering the digital display module. The periphery of the transparent glass plate is sealed to the body of the display panel (22) by a sealant.

7. A waterproof and dustproof sealed LED digital tube according to claim 1, characterized in that, The latch (41) is configured as an L-shaped or U-shaped block protruding from the side of the display panel (22), and the end of the buckle (44) is provided with a barb structure that matches the latch (41).

8. A waterproof and dustproof sealed LED digital tube according to claim 1, characterized in that, A plurality of self-locking mechanisms (3) are provided between the protective component (2) and the outer shell (1), and the plurality of self-locking mechanisms (3) are evenly distributed along the circumference of the outer shell (1).

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