Front maintenance device, LED unit box and LED display screen

Abstract

The invention discloses a front maintenance device, an LED unit box and an LED display screen, and belongs to the field of LED electronic information. The problem that an existing LED unit box is poor in assembling performance is solved. In order to solve the technical problem, the technical scheme adopted by the invention is as follows: the device comprises a fixing device arranged on the PCB module and a clamping assembly arranged on the box body, the fixing device can be clamped in the clamping assembly, the fixing device comprises a first base, one end face of the first base is fixed on the PCB module, the other end face of the first base is provided with a clamping part, and the clamping part is fixed on the PCB module. A locking part is arranged between the first base and the clamping part, the clamping assembly comprises a second base, one end face of the second base is fixed to the box body through a fixing piece, a clamping jaw structure is arranged on the other end face of the second base and comprises a plurality of jaw feet, the multiple jaw feet form a cavity structure, each jaw foot is provided with a clamping part, and the clamping part is arranged on the cavity structure. The clamping parts are matched with the locking parts, and the space defined by the multiple clamping parts is smaller than the inner space of the cavity structure. The method is applied to LED electronic information.

Description

Technical Field

[0001] The invention provides a front maintenance device, an LED unit box and an LED display screen, belonging to the technical field of LED electronic information. Background Art

[0002] The existing LED module and the box are assembled into an LED unit box using a magnetic attraction structure, that is, an iron sheet is mounted on the LED module, and a matching magnet is placed on the corresponding LED box, or a magnetic column is set on the LED module, and the corresponding LED box is made of iron or a matching iron sheet. Multiple LED unit boxes are then spliced ​​into an LED display screen. However, the existing LED display screen with a magnetic attraction structure has the following problems: 1. With the change of temperature and the increase of usage time, the magnetism of the magnet will decrease, which will cause the LED module to detach from the box under the environment of vibration, collision, strong wind, cold winter, etc.; 2. The magnetic suction position corresponding to the LED module lamp surface absorbs dust for a long time, which will affect the appearance of the LED display; 3. For LED display screens with glue sealing the LED module lamp surface, the glue will shrink under low temperature conditions, causing the LED module to warp. When the shrinkage stress of the glue is greater than the magnetic force between the LED module and the box, the edges or corners of the LED module will detach from the box and warp up. Summary of the invention

[0003] In order to solve the technical problem of poor assembly performance of the existing LED unit box, the present invention proposes a front maintenance device, an LED unit box and an LED display screen, with the purpose of improving the assembly performance of the LED unit box by improving the hardware structure of the front maintenance device, the LED unit box and the LED display screen.

[0004] In order to solve the above technical problems, the technical solution adopted by the present invention is: a front maintenance device, comprising a fixing device arranged on the PCB module and a clamping assembly arranged on the box body, the clamping assembly is elastic, and the fixing device can be clamped in the clamping assembly; The fixing device comprises a first base, one end surface of the first base is fixed on the PCB module, the other end surface of the first base is provided with a clamping portion, and a locking portion is provided between the first base and the clamping portion; The clamping assembly includes a second base, one end face of the second base is fixed to the box body through a fixing member, and the other end face of the second base is provided with a clamping claw structure, and the clamping claw structure includes a plurality of claw feet, and the plurality of claw feet constitute a cavity structure, and each claw foot is provided with a clamping part, and the clamping part cooperates with the locking part, and the space enclosed by the plurality of clamping parts is smaller than the internal space of the cavity structure, and the clamping part can be accommodated in the cavity structure.

[0005] Furthermore, the clamping portion is in a spherical structure, the locking portion is in a neck-shaped structure, and the diameter of the clamping portion is greater than the diameter of the locking portion.

[0006] Furthermore, a protrusion is provided on one end surface of the first base fixed to the PCB module, and the protrusion is welded in a fixing groove reserved on the PCB module.

[0007] Furthermore, a through hole is formed on the second base, and the fixing member passes through the through hole to fix the clamping assembly on the box body.

[0008] Furthermore, the PCB module includes a lamp surface and a driving surface, and the first base is fixedly connected to the driving surface.

[0009] Furthermore, the second base and the clamping claw structure are integrally formed and are made of elastic metal material.

[0010] Furthermore, the fixing device is an integrally formed structure and is made of metal.

[0011] Furthermore, the fixing member is a screw or a rivet.

[0012] An LED unit box comprises an LED module and a box body. The LED unit box also comprises the front maintenance device described above. The LED module can be detachably mounted on the box body through the front maintenance device.

[0013] An LED display screen comprises the LED unit box mentioned above.

[0014] The beneficial effects of the present invention compared with the prior art are as follows: 1. The PCB module of the present invention is assembled with the box body through the front maintenance device. Compared with the traditional magnetic structure, as the temperature changes and the use time increases, the PCB module can be prevented from being separated from the box body under the action of external force, and dust absorption can be prevented from affecting the appearance of the LED display screen, thereby expanding the scope of use; 2. The front maintenance device of the present invention is composed of a fixing device and a clamping assembly. The fixing device is fixedly connected to the PCB module, and the clamping assembly is fixedly connected to the box. When assembling the PCB module and the box, the fixing device is clamped on the clamping claw structure of the clamping assembly, so that the PCB module and the box can fit tightly, and the operation process is simple. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The present invention will be further described below in conjunction with the accompanying drawings: Figure 1 It is a structural schematic diagram of the front maintenance device of the present invention; Figure 2 It is a front view of the front maintenance device of the present invention; Figure 3 A top view of the front maintenance device of the present invention; Figure 4 A bottom view of the front maintenance device of the present invention; Figure 5 It is a structural stereogram of the PCB module of the present invention; Figure 6 for Figure 5 A schematic diagram of the enlarged structure of part A; Figure 7 This is a front view of the PCB module of the present invention; Figure 8 for Figure 7 A schematic diagram of the enlarged structure of part B; Fig. 9 A top view of the PCB module of the present invention; Fig.10 for Fig. 9 A schematic diagram of the enlarged structure of the middle C part; Fig.11 It is a structural schematic diagram of the box body of the present invention; Fig.12 for Fig.11 A schematic diagram of the enlarged structure of the D part; Fig.13 It is the front view of the box of the present invention; Fig.14 for Fig.13 A schematic diagram of the enlarged structure of part E in the middle; Fig.15 It is a schematic diagram of the structure of the PCB module, the front maintenance device and the box body cooperating with each other in the present invention; Fig.16 This is a schematic diagram of the structure of the LED display screen of the present invention; Fig.17 This is a front view of the LED display screen of the present invention; In the figure: 1 is a PCB module, 2 is a box, 3 is a fixing device, 4 is a clamping assembly, 5 is a first base, 6 is a protrusion, 9 is a clamping part, 10 is a claw foot, 11 is a clamping part, 12 is a second base, 13 is a fixing part, 14 is a cavity structure, and 15 is a locking part. DETAILED DESCRIPTION

[0016] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate relative positions or positional relationships, which are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", etc. are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first", "second", etc. may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0017] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood by specific circumstances.

[0018] like Figures 1 to 17 As shown, the present invention provides a front maintenance device, an LED unit box and an LED display screen, the front maintenance device includes a fixing device 3 fixedly connected to the PCB module 1 and a clamping assembly 4 fixedly connected to the box body 2, the clamping assembly 4 is elastic, specifically a metal material with elasticity, and the material of the clamping assembly 4 in this embodiment is spring steel, and the fixing device 3 can be clamped in the clamping assembly 4. There are multiple fixing devices 3, and there are multiple clamping assemblies 4. The number of fixing devices 3 and the number of clamping assemblies 4 can be set as needed, as long as the fixing devices 3 and the clamping assemblies correspond to each other one by one and cooperate with each other, the PCB module 1 and the box body 2 can be tightly fitted.

[0019] The fixing device 3 includes a first base 5, one end face of the first base 5 is fixed on the PCB module 1, the other end face of the first base 5 is connected with a clamping portion 9, and a locking portion 15 is connected between the first base 5 and the clamping portion 9. Specifically, the PCB module 1 includes a lamp surface and a driving surface, a fixing groove is provided on the driving surface, and the first base 5 is fixedly connected to one end face of the PCB module 1 with a protrusion 6, and the protrusion 6 is welded in the fixing groove. The fixing device 3 is an integrated structure and is made of metal.

[0020] In this embodiment, the first base 5 is a disc structure, the clamping portion 9 is a spherical structure, the locking portion 15 is a neck structure, and the diameter of the clamping portion 9 is larger than the diameter of the locking portion 15. The structure of the first base 5 can also be set to other regular structures or irregular structures, as long as it can cooperate with the PCB module 1, and the base is welded to the driving surface of the PCB module 1. The clamping portion 9 and the locking portion 15 can also be set to other curved surface structures, as long as it is ensured that the clamping component 4 is not easy to fall off the clamping portion 9 after cooperating with the clamping component 4.

[0021] The packaging process of the lamp surface on the PCB module 1 can be SMD packaging, GOB packaging or COB packaging, etc., which is not limited here.

[0022] The clamping assembly 4 includes a second base 12, one end face of the second base 12 is fixed to the box body 2 through a fixing member 13, and the other end face of the second base 12 is fixedly connected with a clamping claw structure, which includes a plurality of claw feet 10, and the plurality of claw feet 10 constitute a cavity structure 14, and the plurality of claw feet 10 are evenly distributed on the second base 12, and each claw foot 10 is fixedly connected with a clamping portion 11, and the clamping portion 11 cooperates with the locking portion 15, and the space surrounded by the plurality of clamping portions 11 is smaller than the internal space of the cavity structure 14. When the PCB module 1 is fitted with the box body 2, the clamping portion 11 can be fixed at the connection between the locking portion 15 and the clamping portion 11, and the clamping portion 9 is placed in the cavity structure 14, thereby ensuring that the clamping portion 11 is not easy to fall off the clamping portion 9. The number of claw feet 10 is not less than three, and three are provided in this embodiment.

[0023] The second base 12 and the clamping claw structure are integrally formed and made of elastic metal material. After a certain force is applied, it can rebound to its original state. In this embodiment, spring steel is used. A through hole is opened on the second base 12. The fixing member 13 passes through the through hole to fix the clamping assembly 4 on the box body 2. The fixing member 13 is a screw or a rivet.

[0024] The LED unit box comprises an LED module and a box body 2, and the LED module is detachably mounted on the box body 2 through a front maintenance device.

[0025] The LED display screen is composed of a plurality of the above-mentioned LED unit boxes, and the two LED unit boxes are connected to each other by locking parts such as bolts, screws or quick locks. The LED unit boxes are also electrically connected with AC power cords and network cables. The AC power cords in the plurality of LED unit boxes are connected in series and connected to a power source to light up the LED display screen. The network cables in the plurality of LED unit boxes are connected in series through an adapter board to enable the LED display screen to display images.

[0026] The fixing device 3 of the present invention is fixedly connected to the PCB module 1, and the clamping assembly 4 is fixedly connected to the box body 2. When the PCB module 1 and the box body 2 are assembled, the fixing device 3 is clamped on the clamping claw structure of the clamping assembly 4, and the clamping portion 11 is fixed at the connection between the locking portion 15 and the clamping portion 11. The clamping portion 9 is placed in the cavity structure 14, which effectively prevents the PCB module 1 from being separated from the box body 2 under the action of external force and greatly reduces dust accumulation at the connection. It can be suitable for different application environments.

[0027] Regarding the specific structure of the present invention, it should be noted that the connection relationship between the various component modules adopted in the present invention is definite and feasible. Except for special instructions in the embodiments, the specific connection relationship can bring about corresponding technical effects, and solve the technical problems raised by the present invention without relying on the execution of corresponding software programs. The components, modules, models of specific components, the connection methods between each other, and the conventional use methods and expected technical effects brought about by the above-mentioned technical features, except for specific instructions, all belong to the disclosed contents in patents, journal articles, technical manuals, technical dictionaries, and textbooks that can be obtained by technical personnel in this field before the application date, or belong to the existing technologies such as conventional technologies and common knowledge in this field, and there is no need to elaborate, so that the technical solution provided in this case is clear, complete, and feasible, and the corresponding physical products can be reproduced or obtained according to the technical means.

[0028] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A front maintenance device, characterized in that: It comprises a fixing device (3) arranged on a PCB module (1) and a clamping assembly (4) arranged on a box body (2); the clamping assembly (4) is elastic, and the fixing device (3) can be snap-fitted into the clamping assembly (4); The fixing device (3) comprises a first base (5), one end surface of the first base (5) is fixed to the PCB module (1), the other end surface of the first base (5) is provided with a clamping portion (9), and a locking portion (15) is provided between the first base (5) and the clamping portion (9); The clamping assembly (4) comprises a second base (12), one end face of the second base (12) being fixed to the box body (2) via a fixing member (13), and the other end face of the second base (12) being provided with a clamping claw structure, the clamping claw structure comprising a plurality of claw feet (10), the plurality of claw feet (10) forming a cavity structure (14), each claw foot (10) being provided with a clamping portion (11), the clamping portion (11) and the locking portion (15) cooperating with each other, the space enclosed by the plurality of clamping portions (11) being smaller than the internal space of the cavity structure (14), and the cavity structure (14) being able to accommodate the clamping portion (9).

2. A front maintenance device according to claim 1, characterized in that: The clamping portion (9) is in a spherical structure, the locking portion (15) is in a neck-shaped structure, and the diameter of the clamping portion (9) is greater than the diameter of the locking portion (15).

3. A front maintenance device according to claim 1, characterized in that: One end surface of the first base (5) fixed to the PCB module (1) is provided with a protrusion (6), and the protrusion (6) is welded in a fixing groove reserved on the PCB module (1).

4. A front maintenance device according to claim 1, characterized in that: The second base (12) is provided with a through hole, and the fixing member (13) passes through the through hole to fix the clamping assembly (4) on the box body (2).

5. A front maintenance device according to claim 1, characterized in that: The PCB module (1) comprises a lighting surface and a driving surface, and the first base (5) is fixedly connected to the driving surface.

6. A front maintenance device according to claim 1, characterized in that: The second base (12) and the clamping claw structure are integrally formed and are made of elastic metal material.

7. A front maintenance device according to claim 1, characterized in that: The fixing device (3) is an integrally formed structure and is made of metal.

8. A front maintenance device according to claim 1, characterized in that: The fixing member (13) is a screw or a rivet.

9. An LED unit box, comprising an LED module and a box body (2), characterized in that: The LED unit box further comprises a front maintenance device as claimed in any one of claims 1 to 8, and the LED module is detachably mounted on the box body (2) via the front maintenance device.

10. An LED display screen, characterized in that: Comprising the LED unit box as described in claim 9.

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