A LED dot matrix screen

Abstract

The utility model relates to the technical field of LED dot matrix screens, specifically an LED dot matrix screen, including a PCB circuit board, an ink layer is placed on the surface of the PCB circuit board, and the ink layer is tightly fixed to the PCB circuit board through a colloid; the upper surface of the ink layer is covered with a PET diffusion film, and the length and width of the PET diffusion film are equal to the length and width of the ink layer; a transparent sheet is provided on the upper surface of the PET diffusion film, and the transparent sheet is tightly attached to the PET diffusion film through a double-sided adhesive layer. The PCB circuit board, ink layer, PET diffusion film and transparent sheet of the utility model are assembled by attaching and fixing with colloid, water glue and double-sided adhesive layers. This attachment method can make the overall structure of the product thinner, thereby solving the problem that the existing products adopt the form of glue filling during assembly, resulting in thick products and inability to make ultra-thin products.

Description

Technical Field

[0001] The utility model relates to the technical field of LED dot matrix screens, in particular to an LED dot matrix screen. Background Art

[0002] LED dot matrix screen is composed of LED (light emitting diode), which displays text, pictures, animation, video, etc. by turning on and off the lamp beads. It is a display device with modular components, usually composed of display module, control system and power system. LED dot matrix display screen is simple to make and easy to install, and is widely used in various public places, such as bus station announcers, advertising screens and billboards.

[0003] However, the existing LED dot matrix screens are all fixed by glue filling during assembly, which makes the product thicker, so it is impossible to make ultra-thin LED dot matrix screen products, which brings great troubles to people's use. Utility Model Content

[0004] The utility model aims to provide an LED dot matrix screen to solve the problem in the above background technology that the existing LED dot matrix screen is fixed by glue filling and an ultra-thin product cannot be made.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an LED dot matrix screen, comprising a PCB circuit board, an ink layer is placed on the surface of the PCB circuit board, and the ink layer is tightly fixed to the PCB circuit board through a colloid; the upper surface of the ink layer is covered with a PET diffusion film, and the length and width of the PET diffusion film are equal to the length and width of the ink layer; a transparent sheet is arranged on the upper surface of the PET diffusion film, and the transparent sheet is tightly fixed to the PET diffusion film through a double-sided adhesive layer.

[0006] Preferably, the bottom of the PET diffusion film is coated with water glue, and the water glue is used for bonding and fastening the PET diffusion film to the ink layer when the PET diffusion film is connected.

[0007] Preferably, the ink layer is made of EVA or aluminum alloy, and the colloid is double-sided tape or red tape. When the ink layer is made of EVA, the colloid is double-sided tape; and when the ink layer is made of aluminum alloy, the colloid is red tape.

[0008] Preferably, the surface of the ink layer is provided with a plurality of groups of light-transmitting holes, the surface of the PCB circuit board is provided with a plurality of groups of light-emitting holes, and when the ink layer and the PCB circuit board are attached to each other, the light-transmitting holes and the light-emitting holes are connected to each other.

[0009] Preferably, the transparent sheet is made of a transparent lens or brown glass.

[0010] Preferably, the length and width of the transparent sheet are equal to the length and width of the PET diffusion film, and the four sides of the transparent sheet and the PET diffusion film, and the PET diffusion film and the ink layer are aligned with each other when the transparent sheet and the PET diffusion film are mounted.

[0011] Compared with the prior art, the beneficial effects of the utility model are as follows: when the LED dot matrix screen is assembled, the ink layer is bonded to the PCB circuit board through a colloid, and it is necessary to ensure that the light-transmitting holes on the surface of the ink layer and the light-emitting holes on the surface of the PCB circuit board are connected to each other during bonding, and then the PET diffusion film is bonded to the upper surface of the ink layer through a water glue, and finally the transparent sheet is bonded to the upper surface of the PET diffusion film through a double-sided adhesive layer, and the four edges are ensured to be flush when the transparent sheet, the PET diffusion film and the ink layer are bonded; therefore, the PCB circuit board, the ink layer, the PET diffusion film and the transparent sheet of the utility model are bonded and fixed by a colloid, a water glue and a double-sided adhesive layer to complete the assembly, and this bonding method can make the overall structure of the product thinner, thereby solving the problem that the existing products adopt the form of glue filling during assembly, resulting in a thick product and inability to make ultra-thin products. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the three-dimensional appearance structure of the utility model;

[0013] Figure 2 It is a schematic diagram of the top view structure of the utility model;

[0014] Figure 3 It is a schematic diagram of the structure of the utility model in a separated state.

[0015] In the figure: 1. PCB circuit board; 2. ink layer; 21. colloid; 3. PET diffusion film; 31. water glue; 4. transparent sheet; 41. double-sided adhesive layer. DETAILED DESCRIPTION

[0016] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0017] The structure of an LED dot matrix screen provided by the utility model is as follows Figure 1 as well as Figure 3As shown, it includes a PCB circuit board 1, an ink layer 2 is placed on the surface of the PCB circuit board 1, and the ink layer 2 is tightly fixed to the PCB circuit board 1 through a colloid 21; a plurality of groups of light-transmitting holes are opened on the surface of the ink layer 2, and a plurality of groups of light-emitting holes are set on the surface of the PCB circuit board 1, and when the ink layer 2 and the PCB circuit board 1 are attached, the light-transmitting holes and the light-emitting holes are connected to each other, the upper surface of the ink layer 2 is covered with a PET diffusion film 3, and the length and width of the PET diffusion film 3 are equal to the length and width of the ink layer 2, and the bottom of the PET diffusion film 3 is coated with a water glue 31, and the water glue 31 is used for the attachment and fastening work when the PET diffusion film 3 and the ink layer 2 are connected, the material of the ink layer 2 is EVA or aluminum alloy, and the colloid 21 is double-sided adhesive or red glue, and when the material of the ink layer 2 is EVA, the colloid 21 is double-sided adhesive; and when the material of the ink layer 2 is aluminum alloy, the colloid 21 is red glue.

[0018] During implementation, the ink layer 2 is bonded to the PCB circuit board 1 through the colloid 21. During bonding, it is necessary to ensure that the light-transmitting holes on the surface of the ink layer 2 and the light-emitting holes on the surface of the PCB circuit board 1 are connected to each other. Then, the PET diffusion film 3 is bonded to the upper surface of the ink layer 2 through the water glue 31.

[0019] Furthermore, if Figure 2 as well as Figure 3 As shown, a transparent sheet 4 is provided on the upper surface of the PET diffusion film 3, and the transparent sheet 4 is adhered and fastened to the PET diffusion film 3 through a double-sided adhesive layer 41. The material of the transparent sheet 4 is a transparent lens or brown glass. The length and width of the transparent sheet 4 are equal to the length and width of the PET diffusion film 3, and the four sides of the transparent sheet 4 and the PET diffusion film 3 as well as the PET diffusion film 3 and the ink layer 2 are flush with each other when the transparent sheet 4 and the PET diffusion film 3 are mounted.

[0020] During implementation, the transparent sheet 4 is attached to the upper surface of the PET diffusion film 3 via the double-sided adhesive layer 41 , and when the transparent sheet 4 , the PET diffusion film 3 and the ink layer 2 are attached, the four edges are ensured to be flush.

[0021] Working principle: When in use, firstly, the ink layer 2 is bonded to the PCB circuit board 1 through the colloid 21. When bonding, it is necessary to ensure that the light-transmitting holes on the surface of the ink layer 2 and the light-emitting holes on the surface of the PCB circuit board 1 are connected to each other. Then, the PET diffusion film 3 is bonded to the upper surface of the ink layer 2 through the water glue 31. Finally, the transparent sheet 4 is bonded to the upper surface of the PET diffusion film 3 through the double-sided adhesive layer 41. When the transparent sheet 4, the PET diffusion film 3 and the ink layer 2 are bonded, ensure that the four edges are flush, and finally complete the assembly of the LED dot matrix screen.

[0022] The PCB circuit board 1, the ink layer 2, the PET diffusion film 3 and the transparent sheet 4 of the utility model are assembled by bonding and fixing with a colloid 21, a water glue 31 and a double-sided adhesive layer 41. This bonding method can make the overall structure of the product thinner, thereby solving the problem that the existing products adopt the form of glue filling during assembly, resulting in a thick product and the inability to make an ultra-thin product.

[0023] It is obvious to those skilled in the art that the present invention is not limited to the details of the above exemplary embodiments, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention.

Claims

1. An LED dot matrix screen, comprising a PCB circuit board (1), characterized in that: An ink layer (2) is placed on the surface of the PCB circuit board (1), and the ink layer (2) is tightly attached to the PCB circuit board (1) via a colloid (21); the upper surface of the ink layer (2) is covered with a PET diffusion film (3), and the length and width of the PET diffusion film (3) are equal to the length and width of the ink layer (2); a transparent sheet (4) is provided on the upper surface of the PET diffusion film (3), and the transparent sheet (4) is tightly attached to the PET diffusion film (3) via a double-sided adhesive layer (41).

2. The LED dot matrix screen according to claim 1, characterized in that: The bottom of the PET diffusion film (3) is coated with water glue (31), and the water glue (31) is used for bonding and fastening the PET diffusion film (3) and the ink layer (2) when they are connected.

3. The LED dot matrix screen according to claim 1, characterized in that: The material of the ink layer (2) is EVA or aluminum alloy, and the colloid (21) is double-sided adhesive tape or red adhesive tape. When the material of the ink layer (2) is EVA, the colloid (21) is double-sided adhesive tape; and when the material of the ink layer (2) is aluminum alloy, the colloid (21) is red adhesive tape.

4. The LED dot matrix screen according to claim 1, characterized in that: The surface of the ink layer (2) is provided with a plurality of groups of light-transmitting holes, the surface of the PCB circuit board (1) is provided with a plurality of groups of light-emitting holes, and when the ink layer (2) and the PCB circuit board (1) are attached to each other, the light-transmitting holes and the light-emitting holes are connected to each other.

5. The LED dot matrix screen according to claim 1, characterized in that: The material of the transparent sheet (4) is a transparent lens or brown glass.

6. The LED dot matrix screen according to claim 1, characterized in that: The length and width of the transparent sheet (4) are equal to the length and width of the PET diffusion film (3), and the four sides of the transparent sheet (4) and the PET diffusion film (3) as well as the PET diffusion film (3) and the ink layer (2) are flush with each other when the transparent sheet (4) and the PET diffusion film (3) are mounted.

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