An LED display screen that improves color difference

Abstract

This utility model discloses an LED display screen for improving color difference, including a base shell, a PCB board, a mesh frame, and a face mask. Multiple mounting posts are fixedly connected to the upper surface of the mesh frame. Multiple post holes matching the mounting posts are formed on the surface of the face mask. Multiple protrusions are provided on the lower surface of the mesh frame. Multiple hot-melt holes matching the protrusions are formed on the upper surface of the PCB board. This application achieves a bonding connection between the mesh frame and the PCB board by mounting the mesh frame to the LED surface of the PCB board and using hot-melt technology to bond the multiple protrusions at the lower end of the mesh frame to the multiple hot-melt holes of the PCB board. This achieves a reference plane between the mesh frame and the PCB board, thereby improving the color difference problem caused by the face mask when the screen is black.

Description

Technical Field

[0001] This utility model relates to the field of LED display technology, and more specifically, to an LED display that improves color difference. Background Technology

[0002] An LED display (LED panel) is a display screen that uses semiconductor light-emitting diodes to display various information such as text, graphics, images, animations, market data, video, and recorded signals. Appropriate connections (including series and parallel connections) and suitable optical structures of the LED chips constitute the light-emitting segments or points of the display. These light-emitting segments or points can be used to form digital tubes, symbol tubes, star-shaped tubes, matrix tubes, level display tubes, etc. Digital tubes, symbol tubes, and star-shaped tubes are generally referred to as stroke displays, while stroke displays and matrix tubes are collectively referred to as character displays.

[0003] In conventional outdoor LED display modules, the plastic mesh frame is typically installed between the die-cast aluminum base and the PCB. The posts that fix the mask extend upwards from the IC side of the PCB to the lamp side. The plastic mesh frame is usually fixed by limiting and pressing between the die-cast aluminum base and the PCB or by screws. This structure is prone to causing uneven mask installation and a height difference between the lamp and the mask, resulting in color difference issues with the mask when viewed from a black screen. Utility Model Content

[0004] In view of the shortcomings of the existing technology, this utility model provides an LED display screen that improves color difference.

[0005] This utility model discloses an LED display screen for improving color difference, comprising a base shell, a PCB board, a mesh frame, and a face mask. Multiple mounting posts are fixedly connected to the upper surface of the mesh frame. Multiple post holes matching the mounting posts are formed on the surface of the face mask. Multiple protrusions are provided on the lower surface of the mesh frame. Multiple hot-melt holes matching the protrusions are formed on the upper surface of the PCB board. By passing the protrusions through the hot-melt holes to fit against the IC surface of the PCB board, a hot-melt fixture then bonds the protrusions at the lower end of the mesh frame to the hot-melt holes of the PCB board, completing the bonding connection between the mesh frame and the PCB board. This achieves a reference surface between the mesh frame and the PCB board, thereby improving the color difference problem caused by the face mask when the screen is black.

[0006] Preferably, the upper end face of the bottom shell is fixedly connected with a plurality of groove blocks that match the protrusions. By setting a plurality of groove blocks that match the protrusions, after the protrusions have completed the heat fusion connection with the heat fusion holes, their lower ends can form a snap-fit ​​connection with the groove blocks, thereby enabling the space frame to be connected and installed to the upper end face of the bottom shell through the cooperation of the plurality of protrusions and groove blocks.

[0007] Preferably, the bottom shell is a one-piece die-cast aluminum shell, and the space frame is a plastic frame. By setting the bottom shell as a one-piece die-cast aluminum shell, the one-piece die-casting manufacturing process can effectively reduce the weight of the bottom shell, reduce the assembly of parts, ensure the rigidity, strength and durability of the bottom shell, and meet the needs of rapid production; by setting the space frame as a plastic space frame, the plastic space frame is lighter than other materials, while ensuring toughness and strength, and is not easily damaged.

[0008] Preferably, the bottom end face of the base shell has multiple threaded slots, each containing a suspension ring block, and the front end of each suspension ring block has a thread that matches the threaded slot. By setting the threaded slots and suspension ring blocks, after the base shell and PCB board are connected, the suspension ring blocks can be installed on the bottom end face of the base shell through the thread engagement of their front ends with the threaded slots, allowing the base shell to be suspended from the wall.

[0009] Preferably, the planar dimensions of the bottom shell are slightly larger than the planar dimensions of the PCB board, the mesh frame, and the face mask. By making the planar dimensions of the bottom shell slightly larger than the planar dimensions of the PCB board, the mesh frame, and the face mask, the PCB board, the mesh frame, and the face mask can be sequentially placed inside the bottom shell and protected by the bottom shell.

[0010] Preferably, the plurality of protrusions are slidably engaged with the inner wall of a matching groove. By slidably engaging the plurality of protrusions with the inner wall of the matching groove, the protrusions can slide and be inserted / removed within the inner wall of the matching groove, facilitating the installation or removal of the grid frame on the base shell.

[0011] Preferably, the plurality of protrusions are vertically aligned with the plurality of hot-melt holes and the plurality of recessed blocks below. By aligning the protrusions with the hot-melt holes and recessed blocks below in the vertical direction, the protrusions can match the hot-melt holes and recessed blocks below and pass through them sequentially into the final recessed blocks, thereby completing the connection between the space frame and the PCB board and the bottom shell.

[0012] Preferably, a data interface is provided at the bottom of the base shell, and a data cable is movably connected to the data interface, with the other end of the data cable connected to an external device. By providing the data interface and data cable, the external device can transmit data to the data interface via the data cable.

[0013] The beneficial effects of this application are as follows: This design installs the mesh frame from the light surface of the PCB board and uses hot melt technology to bond multiple protrusions at the lower end of the mesh frame to multiple hot melt holes of the PCB board, thereby completing the bonding connection between the mesh frame and the PCB board. This achieves the goal of using the mesh frame and the PCB board as reference surfaces, thereby improving the color difference problem caused by the mask when the screen is black. Attached Figure Description

[0014] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments of this application and are used to explain this application, but do not constitute an undue limitation of this application. In the drawings:

[0015] Figure 1 This is a 3D diagram showing the disassembled structure.

[0016] Figure 2 This is a top view of the PCB board and the bottom shell.

[0017] Figure 3 This is a side sectional view of the overall structure;

[0018] Figure 4 for Figure 1 Enlarged structural diagram at point A;

[0019] Figure 5 for Figure 1 A magnified structural diagram at point B in the middle.

[0020] In the attached diagram: 1. Bottom shell; 2. PCB board; 3. Space frame; 4. Face mask; 5. Groove block; 6. Protrusion block; 7. Threaded hole groove; 8. Suspension ring block; 9. Data interface. Detailed Implementation

[0021] The following drawings will disclose several embodiments of this utility model. For clarity, many practical details will be described in the following description. However, it should be understood that these practical details should not be used to limit this utility model. That is, in some embodiments of this utility model, these practical details are not essential. In addition, for the sake of simplicity, some conventional structures and components will be shown in the drawings in a simple schematic manner.

[0022] It should be noted that all directional indicators in this utility model embodiment, such as up, down, left, right, front, back, etc., are only used to explain the relative positional relationship and movement of the components in a specific posture as shown in the attached figure. If the specific posture changes, the directional indicator will also change accordingly.

[0023] Furthermore, in this utility model, the use of terms such as "first" and "second" is for descriptive purposes only and does not specifically refer to any order or sequence, nor is it intended to limit the utility model. They are merely used to distinguish items or operations described with the same technical terminology and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the technical solutions of various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. If the combination of technical solutions is contradictory or impossible to implement, such a combination should be considered non-existent and not within the scope of protection claimed by this utility model.

[0024] To further understand the utility model's content, features, and effects, the following embodiments are provided, along with detailed descriptions in conjunction with the accompanying drawings:

[0025] Reference Figures 1 to 5 This embodiment of an LED display screen for improving color difference includes a bottom shell 1, a PCB board 2, a mesh frame 3, and a face mask 4. The upper end face of the mesh frame 3 is fixedly connected with multiple mounting posts. The surface of the face mask 4 is provided with multiple post holes that match the mounting posts. The lower end face of the mesh frame 3 is provided with multiple protrusions 6. The upper end face of the PCB board 2 is provided with multiple hot melt holes that match the protrusions 6.

[0026] First, the face mask 4 is fixedly connected to the upper surface of the mesh frame 3 through multiple post holes and mounting posts. Then, the multiple protrusions 6 at the lower end of the mesh frame 3 are aligned with the multiple hot melt holes opened at the upper end of the PCB board 2 and inserted into them. At this time, the multiple protrusions 6 are hot melt connected to the matching hot melt holes using a hot melt fixture to complete the bonding connection between the mesh frame 3 and the PCB board 2. While ensuring the flat installation of the face mask 4, the mesh frame 3 and the PCB board 2 are used as reference surfaces, thereby solving and improving the color difference problem caused by the face mask 4 when the screen is black.

[0027] Reference Figures 1 to 5 Based on Embodiment 1, the upper end face of the bottom shell 1 is fixedly connected with multiple groove blocks 5 that match the protrusions 6; the bottom shell 1 is an integrally die-cast aluminum shell, and the mesh frame 3 is a plastic frame; the bottom end face of the bottom shell 1 is provided with multiple threaded slots 7, and each of the multiple threaded slots 7 is provided with a suspension ring block 8, and the front end of each of the multiple suspension ring blocks 8 is provided with threads that match the threaded slots 7; the planar dimensions of the bottom shell 1 are slightly larger than the planar dimensions of the PCB board 2, the mesh frame 3, and the face mask 4; the multiple protrusions 6 are respectively slidably engaged with the inner walls of the matching groove blocks 5; the multiple protrusions 6 are respectively matched with the multiple hot melt holes and the multiple groove blocks 5 below in the vertical direction; the bottom of the bottom shell 1 is provided with a data interface 9, and a data cable is movably inserted into the data interface 9, with the other end of the data cable connected to an external device.

[0028] By making the base shell 1 a one-piece die-cast aluminum shell, the one-piece die-casting manufacturing process can effectively reduce the weight of the base shell 1, reduce the number of parts to assemble, ensure the rigidity, strength and durability of the base shell 1, and meet the needs of rapid production; by making the space frame 3 a plastic space frame 3, the plastic space frame 3 is lighter than other materials, while ensuring toughness and strength, and is not easily damaged; by setting the threaded slot 7 and the suspension ring 8, after the installation connection between the base shell 1 and the PCB board 2 is completed, the suspension ring 8 can be installed on the bottom end face of the base shell 1 through the thread engagement of the front thread with the threaded slot 7, so that the base shell 1 can be suspended from the wall through the suspension ring 8, which increases the installation range of the base shell 1; by making the planar dimension of the base shell 1 slightly larger than that of the PCB board 2, the overall design is more efficient. The planar dimensions of PCB 2, mesh frame 3, and face mask 4 allow them to be sequentially placed inside the bottom shell 1, where the bottom shell 1 provides housing protection. Multiple protrusions 6 are slidably engaged with the inner walls of matching recessed blocks 5, allowing the protrusions 6 to slide and be inserted / removed within the matching recessed blocks 5, facilitating the installation or removal of the mesh frame 3 on the bottom shell 1. The protrusions 6 are vertically aligned with the lower hot-melt holes and recessed blocks 5, allowing them to pass through and ultimately insert into the recessed blocks 5, thus completing the connection between the mesh frame 3 and the PCB 2 and the bottom shell 1. A data interface 9 and a data cable are provided, enabling external devices to transmit data to the data interface 9 via the data cable.

[0029] In summary: After the mesh frame 3 is bonded to the IC surface of the PCB board 2 by passing through multiple hot melt holes via multiple protrusions 6 at the lower end, a hot melt fixture is used to bond the multiple protrusions 6 at the lower end of the mesh frame 3 to the multiple hot melt holes of the PCB board 2, thereby completing the bonding connection between the mesh frame 3 and the PCB board 2. This achieves the goal of using the mesh frame 3 and the PCB board 2 as reference surfaces, thereby improving the color difference problem caused by the mask 4 when the screen is black.

[0030] The above description is merely an embodiment of this utility model and is not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principle of this utility model should be included within the scope of the claims of this utility model.

Claims

1. An LED display screen for improving color difference, comprising a bottom shell (1), a PCB board (2), a net rack (3) and a mask (4), characterized in that: The upper end face of the mesh frame (3) is fixedly connected with multiple mounting columns, the surface of the mask (4) is provided with multiple column holes that match the mounting columns, the lower end face of the mesh frame (3) is provided with multiple protrusions (6), and the upper end face of the PCB board (2) is provided with multiple hot melt holes that match the protrusions (6). 2.The LED display screen of claim 1, wherein The upper end face of the bottom shell (1) is fixedly connected with a plurality of groove blocks (5) that match the protrusion block (6). 3.The LED display screen of claim 1, wherein The bottom shell (1) is an integral die-cast aluminum shell, and the grid frame (3) is a plastic frame.

4. The LED display screen for improving color difference of claim 1, wherein, The bottom end face of the bottom shell (1) is provided with multiple threaded slots (7), and each of the multiple threaded slots (7) is provided with a suspension ring block (8), and the front end of each of the multiple suspension ring blocks (8) is provided with a thread that matches the threaded slot (7).

5. The LED display screen for improving color difference of claim 1, wherein, The planar dimensions of the bottom shell (1) are slightly larger than those of the PCB board (2), the mesh frame (3), and the face mask (4).

6. The LED display screen for improving color difference of claim 2, wherein, The multiple protrusions (6) are respectively slidably engaged with the inner wall of the matching groove (5).

7. The LED display screen for improving color difference of claim 2, wherein, The plurality of protrusions (6) are respectively matched in the vertical direction with the plurality of hot melt holes and the plurality of grooves (5) below. 8.The LED display screen of improving color difference of claim 1, wherein, The bottom of the base shell (1) is provided with a data interface (9), and a data cable is movably plugged into the data interface (9). The other end of the data cable is connected to an external device.

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