Common cathode driving power integrated backplane for cob display screen

Abstract

The utility model relates to display screen technical field, concretely is COB display screen common cathode drive power integrated backplate, including mounting bracket, and COB common cathode backplate of installing on mounting bracket, and mounting bracket includes two fixed vertical boards, and two fixed vertical boards between being equipped with two connecting cross bars, and the middle part of two fixed vertical boards front side all is equipped with positioning assembly, and positioning assembly includes the round pipe through setting in fixed vertical board front side, and the front end of round pipe inner wall is equipped with annular limit block, and annular limit block swing joint has round rod, and the front end of round rod is equipped with locating block, and the middle part of COB common cathode backplate left and right sides all are seted up with the U -shaped mouth of the locating block passes through. The COB display screen common cathode drive power integrated backplate, through spring reset design and rotatable locating block structure in positioning assembly, user only needs to pull and rotate locating block to complete the fixing or disassembly of backplate, compared with traditional bolt fixed mode, need not to use the tool to operate, greatly shortens the installation and overhauls time.

Description

Technical Field

[0001] This utility model relates to the field of display technology, specifically to a common cathode drive power supply integrated backplane for COB display screens. Background Technology

[0002] COB (Common Cathode) flip-chip technology is an innovative technology that directly packages LED chips onto a PCB circuit board, achieving high-efficiency energy utilization through a special design. Its core lies in the common cathode driving method, where the cathodes of all LEDs are connected together, sharing a common negative electrode, while the anode of each LED is individually connected to the driving circuit. This design allows for precise control of each LED's anode current, effectively optimizing energy use and improving overall display quality and brightness control accuracy.

[0003] Furthermore, COB display technology boasts high integration and excellent heat dissipation, making it suitable for applications requiring high brightness and high dynamic range. Its compact design offers advantages in size and weight, especially in large-scale display applications such as billboards, stage backdrops, and command and control centers, effectively meeting diverse usage requirements.

[0004] However, most current COB display common cathode driver power supply integrated backplanes are typically bolted to the display bracket. While this method ensures the stability of the backplane, the disassembly and assembly process requires tools, is cumbersome, and causes significant inconvenience for later maintenance and repair. Especially in scenarios requiring rapid backplane replacement, the traditional method is inefficient and severely impacts work progress. Therefore, addressing these shortcomings of existing technologies, we propose a COB display common cathode driver power supply integrated backplane. By optimizing the backplane installation method and introducing a more convenient fixing structure, it reduces the time required for installation and disassembly, improves maintenance efficiency, and enhances the user experience. Utility Model Content

[0005] The purpose of this invention is to provide a common cathode drive power supply integrated backplane for COB displays to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: A COB display common cathode driver power supply integrated backplane includes a mounting bracket and a COB common cathode backplane mounted on the mounting bracket, such as... Figure 1 , Figure 3 , Figure 4 and Figure 5As shown, the mounting frame includes two fixed vertical plates arranged symmetrically from left to right, and two connecting horizontal bars arranged symmetrically from top to bottom are provided between the two fixed vertical plates. A positioning component is provided in the middle of the front side of each of the two fixed vertical plates for positioning the COB common cathode backplate on the front side of the mounting frame. The positioning component includes a circular tube that passes through the front side of the fixed vertical plate. An annular limiting block is provided at the front end of the inner wall of the circular tube. A circular rod is movably connected to the annular limiting block. A positioning block is provided at the front end of the circular rod. Under the action of the circular rod, the positioning block can move back and forth. Insert blocks are provided at the rear side of the positioning block and near both ends. A circular anti-detachment block is provided at the rear end of the circular rod. A spring is provided on the outer side of the circular rod and between the circular anti-detachment block and the annular limiting block to provide power for the positioning block to move backward to reset. The COB common cathode backplate has U-shaped openings in the middle of both sides for the positioning blocks to pass through. Positioning slots for the insertion blocks are located on the front side of the COB common cathode backplate, near the top and bottom of the U-shaped openings. When installing the COB common cathode backplate, the operator first rotates the two positioning blocks to a horizontal position, then attaches the COB common cathode backplate to the front of the mounting frame. The two positioning blocks pass through the two U-shaped openings. The operator then pulls the two positioning blocks forward and rotates them to a vertical position, compressing the springs. Releasing the positioning blocks allows the springs to return to their original position, causing the positioning blocks to move backward, allowing the insertion blocks to be inserted into the positioning slots. This completes the installation of the COB common cathode backplate with the mounting frame. When it is necessary to remove the COB common cathode backplate, the operator simply pulls the positioning blocks forward and rotates them to a horizontal position to release the positioning of the COB common cathode backplate.

[0007] Preferred, such as Figure 3 As shown, the fixed vertical plate has U-shaped clearance grooves on its front side and near the top and bottom ends to accommodate screw heads. The middle of the rear side of the inner wall of the U-shaped clearance groove has a mounting hole for the screw to pass through. The fixed vertical plate is installed on the rear side of the inner wall of the display screen housing by screws. The front side of the display screen housing can abut against the left and right sides of the front side of the COB common cathode backplate to prevent the COB common cathode backplate from shaking after it is installed with the mounting bracket.

[0008] Preferred, such as Figure 6 As shown, the rear end of the round rod has a through hole, and the front end of the round rod has a threaded hole communicating with the through hole; The circular anti-detachment block and the circular rod are integrally formed. The outer wall of the circular anti-detachment block fits into the inner wall of the circular tube, allowing the circular rod to move stably back and forth. The circular anti-detachment block has a circular hole communicating with the through hole on its front side, and a circular clearance groove is provided on its rear side. The head of the bolt is located in the circular clearance groove to prevent the head of the bolt from contacting the inner wall of the display screen housing. The circular hole is connected to a bolt, and the threaded end of the bolt passes through the through hole and is threadedly connected to the threaded hole. The positioning block has a threaded groove in the middle of its rear side that communicates with the threaded hole. The threaded end of the bolt is threaded into the threaded groove. The threaded end of the bolt is threaded into the threaded hole and the threaded groove, so that the positioning block and the round rod are connected together.

[0009] Compared with the prior art, the beneficial effects of this utility model are: 1. The COB display screen's common cathode driver power supply integrated backplate, through the spring reset design in the positioning component and the rotatable positioning block structure, allows users to fix or disassemble the backplate simply by pulling and rotating the positioning block. Compared with the traditional bolt fixing method, it can be operated without the use of tools, which greatly shortens the installation and maintenance time and significantly improves maintenance efficiency.

[0010] 2. The COB display screen's common cathode driver power supply integrated backplate features a positioning block and plug-in design combined with a U-shaped opening and positioning groove matching structure, ensuring a tight fit between the backplate and the mounting bracket. At the same time, the U-shaped clearance groove of the fixed vertical plate hides the screw heads, ensuring a flat connection between the backplate and the mounting bracket and avoiding installation interference caused by protruding screws. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the overall first-view structure of this utility model; Figure 2 This is a schematic diagram of the overall second-view structure of this utility model; Figure 3 This is a schematic diagram of the mounting bracket structure in this utility model; Figure 4 This is a schematic diagram of the COB common cathode backplate structure in this utility model; Figure 5 This is a schematic diagram of the assembly structure of the fixed vertical plate and the positioning component in this utility model; Figure 6 This is a schematic diagram of the assembly structure of the positioning component in this utility model; In the diagram: 100, mounting bracket; 110, fixed vertical plate; 111, U-shaped clearance groove; 112, mounting hole; 120, connecting crossbar; 200, COB common cathode backplate; 201, U-shaped opening; 202, positioning groove; 300, positioning assembly; 310, round tube; 311, annular limit block; 320, round rod; 321, through hole; 322, threaded hole; 330, positioning block; 331, insert block; 332, threaded groove; 340, round anti-detachment block; 341, round hole; 342, round clearance groove; 350, spring; 360, bolt. Detailed Implementation

[0012] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0013] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0014] Please see Figures 1-6 This utility model provides a technical solution: The COB display common cathode driver power supply integrated backplane includes a mounting bracket 100 and a COB common cathode backplane 200 mounted on the mounting bracket 100, such as... Figure 1 , Figure 3 , Figure 4 and Figure 5 As shown, the mounting bracket 100 includes two fixed vertical plates 110 arranged symmetrically from left to right, and two connecting horizontal bars 120 arranged symmetrically from top to bottom are provided between the two fixed vertical plates 110. A positioning component 300 is provided in the middle of the front side of each of the two fixed vertical plates 110 for positioning the COB common cathode backplate 200 on the front side of the mounting bracket 100. The positioning assembly 300 includes a circular tube 310 that passes through the front side of the fixed vertical plate 110. The front end of the inner wall of the circular tube 310 is provided with an annular limiting block 311. The annular limiting block 311 is movably connected to a circular rod 320. The front end of the circular rod 320 is provided with a positioning block 330. Under the action of the circular rod 320, the positioning block 330 can move back and forth. The rear side of the positioning block 330 and near both ends are provided with insert blocks 331. The rear end of the circular rod 320 is provided with a circular anti-detachment block 340. The outer side of the circular rod 320 and located between the circular anti-detachment block 340 and the annular limiting block 311 are provided with a spring 350 to provide power for the positioning block 330 to move backward to reset. The COB common cathode backplate 200 has U-shaped openings 201 on both sides of its center for the positioning blocks 330 to pass through. Positioning grooves 202 are provided on the front side of the COB common cathode backplate 200, near the top and bottom of the U-shaped openings 201, for the insertion blocks 331 to be inserted. When installing the COB common cathode backplate 200, the operator first rotates the two positioning blocks 330 to a horizontal position, then attaches the COB common cathode backplate 200 to the front side of the mounting bracket 100, with the two positioning blocks 330 passing through the two U-shaped openings 201 respectively. When the worker pulls the two positioning blocks 330 forward and rotates them to a vertical position, the spring 350 is compressed. Then the positioning blocks 330 are released, the spring 350 returns to its original position, and the positioning blocks 330 move backward, so that the insert block 331 is inserted into the positioning groove 202, thus completing the installation of the COB common cathode backplate 200 and the mounting bracket 100. When it is necessary to remove the COB common cathode backplate 200, the worker pulls the positioning blocks 330 forward and rotates them to a horizontal position to release the positioning of the COB common cathode backplate 200.

[0015] In this embodiment, as Figure 3 As shown, a U-shaped clearance groove 111 is provided on the front side of the fixed vertical plate 110 near the top and bottom ends to accommodate the screw head. A mounting hole 112 for the screw to pass through is provided in the middle of the rear side of the inner wall of the U-shaped clearance groove 111. The fixed vertical plate 110 is installed on the rear side of the inner wall of the display screen housing by screws. The front side of the display screen housing can abut against the left and right sides of the front side of the COB common cathode backplate 200 to prevent the COB common cathode backplate 200 from shaking after it is installed with the mounting bracket 100.

[0016] Specifically, such as Figure 6 As shown, the rear end of the round rod 320 is provided with a through hole 321, and the front end of the round rod 320 is provided with a threaded hole 322 that communicates with the through hole 321. The circular anti-detachment block 340 and the circular rod 320 are integrally formed. The outer wall of the circular anti-detachment block 340 fits against the inner wall of the circular tube 310, allowing the circular rod 320 to move stably back and forth. The circular anti-detachment block 340 has a circular hole 341 on its front side that communicates with the through hole 321, and a circular relief groove 342 on its rear side. The head of the bolt 360 is located in the circular relief groove 342 to prevent the head of the bolt 360 from contacting the inner wall of the display screen housing. A bolt 360 is connected to the round hole 341. The threaded end of the bolt 360 passes through the through hole 321 and is threadedly connected to the threaded hole 322. The center of the rear side of the positioning block 330 is provided with a threaded groove 332 that communicates with the threaded hole 322. The threaded end of the bolt 360 is threadedly connected to the threaded groove 332. The threaded end of the bolt 360 is threadedly connected to the threaded hole 322 and the threaded groove 332, so that the positioning block 330 and the round rod 320 are connected together.

[0017] In this embodiment, the COB display common cathode driver power supply integrated backplane is used by first fixing the mounting bracket 100 to the rear side of the inner wall of the display housing by passing screws through the mounting holes 112 on the fixing vertical plate 110. At the same time, the screw heads are embedded in the U-shaped relief groove 111 of the fixing vertical plate 110 to avoid protrusion. Then, the U-shaped opening 201 of the COB common cathode backplane 200 is aligned with the positioning block 330 in the positioning assembly 300 on the front side of the mounting bracket 100. The positioning block 330 is then rotated horizontally to pass through the U-shaped opening 201 and pulled forward for positioning. The positioning block 330 is moved outward by driving the round rod 320 to overcome the elastic force of the spring 350. At this time, the positioning block 330 is rotated to a vertical position and released. The spring 350 returns to its original position and pushes the positioning block 330 to move backward, so that the insert 331 on the rear side of the positioning block 330 is inserted into the positioning groove 202 of the COB common cathode backplate 200, thus completing the quick locking of the backplate. When disassembling, the positioning block 330 is pulled forward and rotated to a horizontal position to release the engagement between the insert 331 and the positioning groove 202, making it easy to separate the COB common cathode backplate 200 from the mounting bracket 100.

[0018] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A COB display screen common cathode drive power supply integrated backplane, comprising a mounting bracket (100) and a COB common cathode backplane (200) mounted on the mounting bracket (100), characterized in that: The mounting bracket (100) includes two fixed vertical plates (110) arranged symmetrically from left to right. Two connecting horizontal bars (120) are arranged symmetrically from top to bottom between the two fixed vertical plates (110). A positioning component (300) is provided in the middle of the front side of each of the two fixed vertical plates (110). The positioning component (300) includes a circular tube (310) that passes through the front side of the fixed vertical plate (110). An annular limiting block (311) is provided at the front end of the inner wall of the circular tube (310). A circular rod (320) is movably connected to the annular limiting block (311). A positioning block (330) is provided at the front end of the circular rod (320). The positioning block (330) is provided with a plug (331) on the rear side and near both ends. The round rod (320) is provided with a round anti-detachment block (340) at the rear end. A spring (350) is provided on the outer side of the round rod (320) and between the round anti-detachment block (340) and the annular limiting block (311). The middle of the left and right sides of the COB common cathode back plate (200) is provided with a U-shaped opening (201) for the positioning block (330) to pass through. The front side of the COB common cathode back plate (200) and the upper and lower sides near the U-shaped opening (201) are provided with positioning grooves (202) for the plug (331) to be inserted.

2. The COB display screen common cathode driving power supply integrated backplane according to claim 1, characterized in that: The fixed vertical plate (110) has a U-shaped clearance groove (111) on the front side and near the upper and lower ends. The U-shaped clearance groove (111) has a mounting hole (112) for screws to pass through in the middle of the rear side of the inner wall of the rear side.

3. The COB display screen common cathode driving power supply integrated backplane according to claim 1, characterized in that: The round rod (320) has a through hole (321) at its rear end and a threaded hole (322) at its front end that communicates with the through hole (321).

4. The COB display screen common cathode driving power supply integrated backplane according to claim 1, characterized in that: The circular anti-detachment block (340) and the circular rod (320) are integrally formed, and the outer wall of the circular anti-detachment block (340) is attached to the inner wall of the circular tube (310).

5. The COB display screen common cathode driving power supply integrated backplane according to claim 3, characterized in that: The circular anti-detachment block (340) has a circular hole (341) communicating with the through hole (321) on its front side, and a circular clearance groove (342) is provided on its rear side.

6. The COB display screen common cathode driving power supply integrated backplane according to claim 5, characterized in that: The circular hole (341) is connected to a bolt (360), the threaded end of which passes through the through hole (321) and is threadedly connected to the threaded hole (322).

7. The COB display screen common cathode driving power supply integrated backplane according to claim 6, characterized in that: The positioning block (330) has a threaded groove (332) in the middle of its rear side that communicates with the threaded hole (322), and the threaded end of the bolt (360) is threaded into the threaded groove (332).

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