LED display unit with decorative pattern and LED display screen

Abstract

The utility model belongs to LED display technical field relates to a spray has the LED display unit and LED display screen of decorative pattern, LED display unit includes a plurality of LED display module and transparent protective film, and LED display module includes module bottom shell and LED lamp plate subassembly, LED lamp plate subassembly includes PCB circuit board, adhesive layer and LED lamp pearl, LED lamp pearl is pasted in the front of PCB circuit board, the front of PCB circuit board fills adhesive and forms adhesive layer, and the height of adhesive layer is greater than the height of LED lamp pearl, and the back of transparent protective film is bonded together with adhesive layer, the back of transparent protective film has reverse pattern spray, or the front of PCB circuit board has pattern spray, or the front of mask has pattern spray, its beneficial effect is, LED display unit can also show decorative pattern under the unenergized state, solves the current LED display screen in the application occasion that needs display screen and surrounding environment coordination fusion, is difficult to satisfy the aesthetic demand of special scene's technical problem.

Description

Technical Field

[0001] This utility model relates to the field of LED display technology, and in particular to an LED display unit and an LED display screen with a decorative pattern printed on it. Background Technology

[0002] In today's information age, LED displays, as an important tool for information display and dissemination, are widely used in various fields such as commercial advertising, information dissemination, and stage performances. However, existing LED displays appear pure black when not powered on. This single color lacks decorative appeal and fails to meet the aesthetic needs of some special scenarios, such as outdoor decoration and art exhibitions. These occasions typically require the display to blend harmoniously with the surrounding environment, presenting a more artistic and personalized appearance.

[0003] Furthermore, existing LED displays lack environmental adaptability, and their visual clashes with the environment when not in use limit their application in certain specific spaces. For example, in outdoor landscape lighting or interior decoration design, a black display screen may disrupt the overall aesthetic effect. Therefore, there is a need to develop a new type of LED display screen that can both fulfill display functions and enhance decorative effects and environmental adaptability. Utility Model Content

[0004] (a) Technical problems to be solved In view of the above-mentioned shortcomings and deficiencies of the prior art, the present invention provides an LED display unit and an LED display screen with printed decorative patterns, which solves the technical problem that the existing LED display screens are not decorative enough and are difficult to meet the aesthetic requirements of special scenarios in application occasions where the display screen needs to be coordinated and integrated with the surrounding environment.

[0005] (II) Technical Solution To achieve the above objectives, the main technical solutions adopted by this utility model include: In a first aspect, this utility model provides an LED display unit with a decorative pattern printed on it, including a plurality of LED display modules and a transparent protective film. The LED display module includes a module bottom shell and an LED light board assembly, and the back of the LED light board assembly is mounted together with the module bottom shell. The LED light board assembly includes a PCB circuit board, an adhesive layer, and LED beads. The LED beads are mounted on the front side of the PCB circuit board. The front side of the PCB circuit board is filled with adhesive to form an adhesive layer, and the height of the adhesive layer is greater than the height of the LED beads. The back side of the transparent protective film is bonded to the adhesive layer. The back of the transparent protective film is printed with a reverse pattern to obtain a positive pattern by mirroring the front of the transparent protective film; or the front of the PCB circuit board is printed with a pattern; or a mask is installed on the front of the LED light board assembly, the front of the mask is printed with a pattern, and an adhesive layer covers the mask.

[0006] Optionally, the thickness of the transparent protective film is 1 to 3 mm, and it is bonded to the adhesive layer by electrostatic adhesive.

[0007] Alternatively, the transparent protective film may be made of materials including, but not limited to, polyester film and polyethylene film.

[0008] Optionally, the adhesive layer extends backward to wrap around the four sides and the back edge of the PCB circuit board. The module bottom shell and the LED light board assembly are connected together by bolts, pressing the adhesive layer on the back of the PCB circuit board and cooperating with the potting compound on the back of the PCB circuit board to achieve double waterproofing inside and out.

[0009] Optionally, potting compound is applied over an adhesive layer that extends to the back of the PCB board.

[0010] Optionally, a sensor is soldered to the back of the PCB circuit board, and a clearance groove is provided on the front of the module bottom shell at the position opposite to the sensor. A waterproof rubber ring is provided between the clearance groove and the PCB circuit board to prevent potting compound from entering the clearance groove and affecting the normal operation of the sensor.

[0011] Optionally, connectors are soldered to the back of the PCB circuit board.

[0012] Secondly, this utility model embodiment provides an LED display screen, including the aforementioned LED display unit, which is mounted on a building wall via a mounting plate; or the LED display unit is mounted on the front of a cabinet.

[0013] (III) Beneficial Effects The beneficial effects of this utility model are: 1. This utility model discloses an LED display unit and LED display screen with printed decorative patterns. Due to the use of a transparent protective film, an adhesive layer higher than the LED beads and the mask is poured on the front of the PCB circuit board. The back of the transparent protective film is bonded to the adhesive layer. It is possible to print a reverse pattern on the back of the transparent protective film, or print the pattern on the front of the mask in advance, or print the pattern on the PCB board. All of these methods can display a positive decorative pattern on the front of the screen. Compared with the prior art, the LED display unit can display decorative patterns even when it is not powered on, which meets the aesthetic needs of special scenarios, especially in applications such as outdoor decoration and art display. It solves the technical problem that the existing LED display screens are not decorative enough and cannot meet the aesthetic needs of special scenarios in applications where the display screen needs to be coordinated and integrated with the surrounding environment.

[0014] 2. The power supply of the LED display unit of this utility model is external, and the system card is built-in. It can be directly attached to the wall to form an LED display screen through the mounting plate. The overall design is thinner and lighter. Alternatively, it can be installed on the cabinet first, and then the cabinets can be spliced ​​together to form an LED display screen.

[0015] 3. Due to the overall thinness and lightness of the LED display unit, it can be directly mounted on building walls and glass walls using mounting plates. It can also be suspended or floor-mounted using display racks, and is applicable to scenarios such as luxury home decoration, conference rooms, small and medium-sized control rooms, advertising media, and performance stages. Attached Figure Description

[0016] Figure 1 This is an exploded view of the LED display unit in Embodiment 1 of the present invention, which is an LED display unit with a decorative pattern printed on it and an LED display screen. Figure 2 This is a rear view schematic diagram of an LED display module according to Embodiment 1 of the present invention, which is an LED display unit and LED display screen with a decorative pattern printed on it. Figure 3 for Figure 2 Schematic diagram of the cross section at point AA; Figure 4 for Figure 3 Enlarged view of point B in the middle; Figure 5 This is a cross-sectional schematic diagram of an LED display module according to Embodiment 2 of the present invention, which is an LED display unit and LED display screen with a decorative pattern printed on it. Figure 6 for Figure 5 Enlarged view of point C in the middle; Figure 7 This is a three-dimensional schematic diagram of the LED display unit and LED display screen with a decorative pattern printed on it, according to Embodiment 4 of the present invention (the transparent protective film is not shown).

[0017] [Explanation of Labels in the Attached Image] 1. Module bottom shell; 2. LED light board assembly; 21. LED beads; 22. PCB circuit board; 23. Adhesive layer; 24. Potting compound; 25. Sensor components; 26. Connector; 3. Waterproof rubber ring; 4. Transparent protective film; 5. Box body; 6. Face mask. Detailed Implementation

[0018] To better explain and facilitate understanding of this utility model, a detailed description of its specific embodiments is provided below with reference to the accompanying drawings. In this document, directional terms such as "upper" and "lower" are used interchangeably with... Figure 1 With the orientation as a reference, the direction of the module bottom shell 1 is the "back side", and the direction of the transparent protective film 4 is the "front side".

[0019] This utility model provides an LED display unit and an LED display screen with a decorative pattern printed on them. The LED display unit includes several LED display modules and a transparent protective film. Each LED display module includes a module base and an LED light board assembly. The back of the LED light board assembly is mounted to the module base. The LED light board assembly includes a PCB circuit board, an adhesive layer, and LED beads. The LED beads are mounted on the front side of the PCB circuit board. The front side of the PCB circuit board is filled with adhesive to form an adhesive layer, and the height of the adhesive layer is greater than the height of the LED beads. The back of the transparent protective film is bonded to the adhesive layer. The back of the transparent protective film is printed with a decorative pattern. Reverse patterns are achieved by mirroring the front of a transparent protective film to obtain a positive pattern; or patterns are printed on the front of a PCB circuit board; or a mask is installed on the front of an LED light board assembly, with a pattern printed on the front of the mask and an adhesive layer covering the mask. Compared with existing technologies, LED display units can also display decorative patterns when not powered on, meeting the aesthetic needs of special scenarios, especially in indoor and outdoor decoration and art display applications. This solves the technical problem that existing LED displays are not decorative enough and cannot meet the aesthetic needs of special scenarios in applications where the display needs to be coordinated and integrated with the surrounding environment.

[0020] To better understand the above technical solutions, exemplary embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. Although exemplary embodiments of the present invention are shown in the drawings, it should be understood that the present invention can be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that the present invention can be understood more clearly and thoroughly, and that the scope of the present invention can be fully conveyed to those skilled in the art.

[0021] Example 1:

[0022] Reference Figures 1 to 3 This embodiment 1 provides an LED display unit with a decorative pattern printed on it, including several LED display modules and a transparent protective film 4. The LED display module includes a module bottom shell 1 and an LED light board assembly 2.

[0023] like Figure 1As shown in Embodiment 1, the LED display unit includes four LED display modules and a transparent protective film 4. In actual production applications, the number of LED display modules and the number of transparent protective films 4 in the LED display unit are set according to actual needs.

[0024] See Figure 3 and Figure 4 The back of the LED light board assembly 2 is bolted to the module base shell 1. The LED light board assembly 2 includes a PCB circuit board 22, an adhesive layer 23, and LED beads 21. The LED beads 21 are mounted on the front side of the PCB circuit board 22. The front side of the PCB circuit board 22 is potted to form the adhesive layer 23, and the height of the adhesive layer 23 is greater than the height of the LED beads 21. The back side of the transparent protective film 4 is bonded to the adhesive layer 23. The back side of the transparent protective film 4 is printed with a reverse pattern to obtain a positive pattern by mirroring the front side of the transparent protective film 4.

[0025] By using a transparent protective film 4 and spraying a reverse pattern on the back of the transparent protective film 4, and pouring an adhesive layer 23 higher than the LED beads 21 onto the front of the PCB circuit board 22, the back of the transparent protective film 4 is bonded to the adhesive layer 23, and a forward pattern is displayed on the front of the screen. Compared with the existing technology, which sprays and prints textured pattern layers on the front of the PCB substrate, this application can simplify the production process of decorative LED displays, reduce the light efficiency loss of LED display modules, and improve the display effect. It solves the technical problems of cumbersome production steps and poor display effect of existing decorative LED displays.

[0026] When the LED display screen is not powered on, the pattern printed on the transparent protective film 4 will appear to form a decorative pattern. This solution requires numbering the transparent protective film 4 for each LED display module. If the LED display module needs to be repaired, after repair, simply re-print the pattern on the transparent protective film 4 according to the numbered positions, and then cover the LED display module with the transparent protective film 4.

[0027] It should be noted that the forward pattern refers to a pattern that conforms to our visual viewing habits, while the reverse pattern is a mirror image of the forward pattern. The reverse pattern is printed on the back of the transparent protective film 4, and what we see when viewing the screen from the front is the forward pattern.

[0028] As a feasible solution, the transparent protective film 4 has a thickness of 1-3mm and is bonded to the adhesive layer 23 via electrostatic adhesive. Therefore, there is no adhesive residue after the transparent protective film 4 and the adhesive layer 23 are bonded together, and they can be bonded repeatedly. During the electrostatic bonding process, the output voltage of the electrostatic generator is typically 5kV-10kV, lasting for 1-3 seconds. At the same time, the module bottom shell 1 is made of insulating material and equipped with grounding equipment to release residual charge and ensure operational safety.

[0029] In actual production applications, the transparent protective film 4 uses a high-transmittance material that can be adhered by electrostatic adsorption, including but not limited to protective films such as diamond film, polyester film (PET), polyethylene film (PET), and polyvinyl chloride (PVC). The adhesive layer 23 is not limited in material; it can be a composite adhesive of polyester film and polyethylene film, or epoxy resin adhesive, as long as the adhesive layer 23 achieves a transparent or semi-transparent effect. The LED display screen is a COB encapsulated screen.

[0030] See Figure 4 As a feasible solution, the adhesive layer 23 extends backward to wrap around the four sides and the back edge of the PCB circuit board 22. The module bottom shell 1 and the LED lamp board assembly 2 are connected together by bolts, pressing the adhesive layer 23 on the back of the PCB circuit board 22 and cooperating with the potting compound 24 on the back of the PCB circuit board 22 to achieve double waterproofing inside and out, achieving IP67 waterproof rating. This greatly improves the waterproofing effect of the LED display module and meets the usage requirements of indoor and outdoor displays, solving the problem of insufficient waterproofing effect of LED display units. In some feasible solutions, the height of the adhesive layer 23 is 0.2mm to 1mm greater than the height of the LED lamp bead 21 and the mask 6 to ensure that there are no air bubbles after the transparent protective film 4 is applied and that the light refractive index is matched.

[0031] Continue reading Figure 4 Furthermore, potting compound 24 covers the adhesive layer 23 extending to the back of the PCB circuit board 22 to prevent the adhesive layer from lifting and causing waterproofing failure.

[0032] See Figure 3 In some feasible solutions, multiple sensor components 25 are soldered to the back of the PCB circuit board 22. The front of the module's bottom shell 1 has a clearance groove opposite to the sensor components 25. A waterproof rubber ring 3 is provided between the clearance groove and the PCB circuit board 22 to prevent potting compound 24 from entering the clearance groove and affecting the normal operation of the sensor components 25. The sensor components 25 are commercially available sensors, and their type depends on the actual installation environment and the functions to be implemented. For example, a photosensitive sensor and a temperature sensor can be used to achieve automatic brightness adjustment and overheat protection; an infrared sensor can be used to enable interaction between people and the LED display screen.

[0033] See Figure 3The back of the PCB circuit board 22 has a connector 26 soldered on it. The LED display unit has a built-in system card and no power supply. The power supply is external, which makes the overall LED display unit thinner.

[0034] Example 2:

[0035] See Figure 5 and Figure 6 Unlike Embodiment 1, the LED display module in Embodiment 2 also includes a face mask 6. The face mask 6 is installed on the front of the LED display module by bolts or clips, and the height of the adhesive layer 23 is greater than the height of the LED beads 21 and the face mask 6. The decorative pattern is instead printed on the front of the face mask 6, and the reverse image is no longer printed on the transparent protective film 4. The pattern printed on the face mask 6 is protected by the adhesive layer 23, preventing scratches and wear.

[0036] It should be noted that after all the face masks 6 are arranged in the preset order, they are printed. After the printing is completed, each face mask 6 is installed on the front of the LED light board assembly 2 in the preset order. Then, glue is poured on the front of the PCB circuit board 22 to form an adhesive layer 23. Finally, the transparent protective film 4 is attached.

[0037] When the LED display screen is not powered on, the pattern printed on the mask 6 will appear, forming a decorative pattern. If the LED display module needs to be repaired, it can be simply covered with the transparent protective film 4 again after repair, without affecting the printing on the LED display module.

[0038] Example 3:

[0039] Unlike Embodiment 1, in Embodiment 3 the pattern is printed on the front side of the PCB circuit board 22, and the transparent protective film 4 does not have the reverse pattern printed on it.

[0040] When the LED display screen is not powered on, the pattern printed on the PCB circuit board 22 will appear to form a decorative pattern. This solution completely avoids the problem of ink color consistency on the PCB circuit board 22, and since the mask 6 is not required, the cost of ensuring ink color on the mask 6 is saved.

[0041] Example 4:

[0042] See Figure 1 and Figure 7 This embodiment provides an LED display screen, including the LED display unit of Embodiment 1, and multiple LED display units constitute an LED display screen.

[0043] In some feasible solutions, due to the overall thinness and lightness of the LED display unit, the LED display unit can be mounted on the building wall or glass wall via mounting plate, or it can be suspended or floor-mounted via display rack, and can be applied to scenarios such as luxury home decoration, conference room, small and medium-sized control room, advertising media and performance stage.

[0044] See Figure 7 In some feasible solutions, the LED display unit is installed on the front of the cabinet 5, and multiple cabinets 5 are spliced ​​together to form an LED display screen.

[0045] In the description of this utility model, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0046] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0047] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "beneath" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0048] In the description of this specification, the terms "one embodiment," "some embodiments," "embodiment," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0049] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make modifications, alterations, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. An LED display unit with a decorative pattern printed on it, characterized in that: It includes several LED display modules and a transparent protective film (4). The LED display module includes a module bottom shell (1) and an LED lamp board assembly (2). The back of the LED lamp board assembly (2) is mounted together with the module bottom shell (1). The LED light board assembly (2) includes a PCB circuit board (22), an adhesive layer (23), and LED beads (21). The LED beads (21) are mounted on the front side of the PCB circuit board (22). The front side of the PCB circuit board (22) is filled with adhesive to form the adhesive layer (23), and the height of the adhesive layer (23) is greater than the height of the LED beads (21). The back side of the transparent protective film (4) is bonded to the adhesive layer (23). The back of the transparent protective film (4) is printed with a reverse pattern to obtain a positive pattern by mirroring the front of the transparent protective film (4); or the front of the PCB circuit board (22) is printed with a pattern; or the front of the LED light board assembly (2) is fitted with a mask (6), the front of the mask (6) is printed with a pattern, and the adhesive layer (23) covers the mask (6).

2. The LED display unit with a decorative pattern printed on it as described in claim 1, characterized in that: The thickness of the transparent protective film (4) is 1-3 mm, and it is bonded to the adhesive layer (23) by electrostatic adhesive.

3. The LED display unit with a decorative pattern printed on it as described in claim 2, characterized in that: The transparent protective film (4) is made of polyester film and polyethylene film.

4. The LED display unit with a decorative pattern printed on it as described in claim 1, characterized in that: The adhesive layer (23) extends backward to wrap around the four sides and the back edge of the PCB circuit board (22). The module bottom shell (1) and the LED light board assembly (2) are connected together by bolts to press the adhesive layer (23) on the back of the PCB circuit board (22) and cooperate with the potting compound (24) on the back of the PCB circuit board (22) to achieve double waterproofing inside and outside.

5. An LED display unit with a decorative pattern printed on it as described in claim 4, characterized in that: The potting compound (24) covers the adhesive layer (23) extending to the back of the PCB circuit board (22).

6. An LED display unit with a decorative pattern printed on it as described in claim 4, characterized in that: A sensor (25) is soldered to the back of the PCB circuit board (22). A clearance groove is provided on the front of the module bottom shell (1) at a position opposite to the sensor (25). A waterproof rubber ring (3) is provided between the clearance groove and the PCB circuit board (22) to prevent the potting compound (24) from entering the clearance groove and affecting the normal operation of the sensor (25).

7. An LED display unit with a decorative pattern printed on it as described in claim 1, characterized in that: The back of the PCB circuit board (22) is soldered with connectors (26).

8. An LED display screen, characterized in that: Includes an LED display unit with a decorative pattern as described in any one of claims 1 to 7, wherein the LED display unit is mounted on a building wall via a mounting plate; or the LED display unit is mounted on the front of a housing (5).

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