LED display screen PCB backlight chip with high installation stability

Abstract

The utility model relates to the field of backlight chips, in particular to an LED display screen PCB (printed circuit board) backlight chip with high installation stability, the backlight chip is installed on a circuit board body, and a movable plate is movably arranged on the circuit board body above the backlight chip; a pressing plate is vertically and movably arranged at the bottom of the movable plate, a plurality of springs are upwards and vertically mounted at the top of the pressing plate, and the other ends of the springs are connected with the bottom of the movable plate. According to the utility model, the backlight chip is installed on the circuit board body through the packaging technology, and the pressing plate can be stably pressed on the backlight chip through the elastic force provided by the spring, so that the backlight chip can be secondarily fixed through the pressing plate, and the installation stability of the backlight chip is enhanced.

Description

TECHNICAL FIELD

[0001] The utility model relates to backlight chip technical field especially relates to a LED display screen PCB circuit board backlight chip with high installation stability. BACKGROUND

[0002] The backlight chip is the core component of the backlight system, and it is responsible for providing stable and uniform light source for the display screen. In the LED display screen, the backlight chip controls the light-emitting of the LED lamp bead, so that the screen can display clear images.

[0003] The backlight chip is usually installed on the PCB circuit board by the way of patch packaging. In the long-term use process of the PCB, since the backlight chip does not have an additional fixing mechanism, the stability of the backlight chip installed on the PCB circuit board is poor, thereby reducing the reliability of the system. Therefore, an LED display screen PCB circuit board backlight chip with high installation stability is urgently needed. SUMMARY

[0004] The utility model discloses a kind of LED display screen PCB circuit board backlight chips with high installation stability to solve the shortcomings in prior art.

[0005] To achieve the above object, the utility model adopts the following technical scheme:

[0006] A kind of LED display screen PCB circuit board backlight chip with high installation stability, including circuit board body, the circuit board body is installed with backlight chip, and the top of circuit board body is movably provided with movable plate above backlight chip;The bottom of the movable plate is vertically movably provided with pressing plate, the top of pressing plate is vertically installed with multiple springs upwards, and the other end of spring is all connected with the bottom of movable plate.

[0007] In addition, preferably, both sides of the movable plate are fixedly provided with side columns, and the side columns are provided with sliding blocks.

[0008] In addition, preferably, both sides of the circuit board body are fixedly provided with sliding rails above the backlight chip, and the side columns are movably located in the sliding rails through the sliding blocks.

[0009] In addition, preferably, the top of the pressing plate is fixedly and vertically provided with multiple guide columns upwards, and the guide columns are all located in the inner side of spring.

[0010] In addition, preferably, the guide columns all pass through movable plate, and the top of guide column is fixedly provided with anti-falling piece.

[0011] In addition, preferably, the middle part of the top of the pressing plate is fixed upwardly with a pull column arranged vertically, and the other end of the pull column is passed through the movable plate and connected with the pull plate.

[0012] The backlight chip is installed on the circuit board body through a packaging process, and the elastic force provided by the spring can stably press the backlight chip on the pressing plate, so that the secondary fixation of the backlight chip can be realized through the pressing plate, and the installation stability of the backlight chip is enhanced. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 A structure diagram of the backlight chip of the LED display screen PCB circuit board with high installation stability is provided in the utility model.

[0014] Figure 2 For Figure 1 An enlarged detail view of the backlight chip in the utility model is provided.

[0015] Figure 3 A structure diagram of the movable plate, the pressing plate and the spring of the backlight chip of the LED display screen PCB circuit board with high installation stability is provided in the utility model.

[0016] Figure 4 An exploded structure diagram in the utility model is provided. Figure 3

[0017] Figure 5 A structure diagram of the movable plate hidden in the utility model is provided. Figure 3

[0018] In the drawing: 1, circuit board body; 2, backlight chip; 3, sliding rail; 4, movable plate; 41, side column; 42, sliding block; 5, pressing plate; 51, guide column; 511, anti-falling piece; 52, pull column; 521, pull plate; 6, spring. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments.

[0020] Referring to Figures 1-5 A backlight chip of an LED display screen PCB circuit board with high installation stability comprises a circuit board body 1, the backlight chip 2 is installed on the circuit board body 1, and the movable plate 4 is movably arranged above the backlight chip 2 on the circuit board body 1. The bottom of the movable plate 4 is movably arranged vertically with the pressing plate 5, the top of the pressing plate 5 is vertically installed with a plurality of springs 6, and the other end of the spring 6 is connected with the bottom of the movable plate 4.

[0021] ​​The circuit board body 1 is a PCB circuit board of the LED display screen, and the backlight chip 2 is installed on the circuit board body 1 in a surface mount device (SMD) manner, that is, the backlight chip 2 is accurately placed at a predetermined position on the circuit board body 1, and the pins of the backlight chip 2 are welded to the pads on the circuit board by using a reflow soldering process, so as to realize stable connection of the backlight chip 2 and the circuit board body 1. It should be noted that the specific installation manner between the circuit board body 1 and the backlight chip 2 is a prior art, and thus will not be described in detail.

[0022] The two sides of the movable plate 4 are fixedly provided with side columns 41, and the side columns 41 are provided with sliding blocks 42. The circuit board body 1 is fixedly provided with sliding rails 3 on both sides of the backlight chip 2, and the side columns 41 are movably arranged in the sliding rails 3 through the sliding blocks 42. Through the matching arrangement between the sliding rails 3 and the sliding blocks 42, the stability of the movable plate 4 during movement can be improved.

[0023] The top of the pressing plate 5 is fixedly and vertically provided with a plurality of guide columns 51, and the guide columns 51 are located on the inner side of the spring 6. The guide columns 51 pass through the movable plate 4, and the top of the guide column 51 is fixedly provided with an anti-falling piece 511. Through the arrangement of the guide column 51, the pressing plate 5 can be guided during movement. And through the arrangement of the anti-falling piece 511, the pressing plate 5 can be prevented from falling off from the bottom of the movable plate 4.

[0024] The middle of the top of the pressing plate 5 is fixedly and vertically provided with a pull column 52, and the other end of the pull column 52 passes through the movable plate 4 and is fixedly connected with a pull plate 521. Through the matching arrangement between the pull column 51 and the pull plate 521, the position of the pressing plate 5 can be adjusted by the user.

[0025] In this embodiment, the backlight chip 2 can be installed on the circuit board body 1 through the packaging process in the prior art. Then, the secondary fixation of the backlight chip 2 can be realized through the pressing of the pressing plate 5, so as to further enhance the installation stability of the backlight chip 2.

[0026] Further, after the packaging of the backlight chip 2 is completed, the user only needs to pull the pull plate 521 upwards, so as to drive the pull column 52 and the pressing plate 5 to move upwards synchronously through the pull plate 521. At this time, the spring 6 is compressed, and the guide column 51 moves upwards synchronously. Then the user only needs to move the movable plate 4 to the top of the backlight chip 2, and at this time, the pressing plate 5 also moves to the top of the backlight chip 2 synchronously.

[0027] Finally, the user only needs to release the pull plate 521, at this time the spring 6 can be automatically reset by its elastic force, so that the spring 6 can be pressed downward by the elastic force, so that the pressing plate 5 is stably pressed on the backlight chip 2. To achieve the secondary fixation of the backlight chip 2, further enhance the installation stability of the backlight chip 2.

[0028] Further, the pressing plate 5 is pre-coated with silicone grease, and the pressing plate 5 is a heat-conducting material, and the heat generation of the backlight chip 2 is low, so that the fixation by the pressing plate 5 does not affect the heat dissipation of the backlight chip 2.

[0029] In the utility model, the backlight chip 2 is installed on the circuit board body 1 through the packaging process, and the elastic force provided by the spring 6 can stably press the pressing plate 5 on the backlight chip 2, so that the secondary fixation of the backlight chip 2 can be realized by the pressing plate 5, so as to enhance the installation stability of the backlight chip 2.

[0030] The above is only a preferred specific embodiment of the utility model, but the protection scope of the utility model is not limited to this, any person skilled in the art in the technical range disclosed by the utility model, according to the technical scheme and the utility model concept of the utility model, equivalent replacement or change, should be covered in the protection scope of the utility model.

Claims

1. A backlight chip for an LED display PCB circuit board with high installation stability, comprising a circuit board body (1), characterized in that, A backlight chip (2) is installed on the circuit board body (1), and a movable plate (4) is movably disposed on the circuit board body (1) above the backlight chip (2). A pressure plate (5) is vertically mounted on the bottom of the movable plate (4), and multiple springs (6) are vertically mounted on the top of the pressure plate (5), with the other end of each spring (6) connected to the bottom of the movable plate (4).

2. The LED display PCB circuit board backlight chip with high installation stability according to claim 1, characterized in that, Both sides of the movable plate (4) are fixedly provided with side columns (41), and each side column (41) is provided with a slider (42).

3. The LED display PCB circuit board backlight chip with high installation stability according to claim 2, characterized in that, The circuit board body (1) is fixedly provided with slide rails (3) on both sides of the backlight chip (2), and the side posts (41) are adapted to move within the slide rails (3) by sliders (42).

4. The LED display PCB circuit board backlight chip with high installation stability according to claim 1, characterized in that, The top of the pressure plate (5) is fixed vertically with multiple guide posts (51), and the guide posts (51) are all located inside the spring (6).

5. The LED display PCB circuit board backlight chip with high installation stability according to claim 4, characterized in that, The guide posts (51) all pass through the movable plate (4), and the top of each guide post (51) is fixedly provided with an anti-dropping component (511).

6. The LED display PCB circuit board backlight chip with high installation stability according to claim 5, characterized in that, A tie column (52) is fixedly and vertically installed at the top center of the pressure plate (5). The other end of the tie column (52) passes through the movable plate (4) and is fixedly connected to the tie plate (521).

Images