Demagnetizing LED display screen

Abstract

The utility model relates to a kind of demagnetization LED display, including box, module, module is electrically connected with box, box is equipped with nut post, nut post is fixed with magnet fixed column, magnet fixed column upper end is provided with magnet slot, magnet slot is fixed with magnet, module is equipped with lamp plate, lamp plate soldering tin is fixed with iron cap, iron cap and magnet coaxial one-to-one correspondence, iron cap is buckled in magnet fixed column outside, and iron cap inner diameter is greater than magnet fixed column outer diameter, the utility model, by the magnetic attraction adsorption of magnet and iron cap, realize lamp plate fixed on box, the dismounting and maintenance of lamp plate are convenient, by iron cap completely wrapping magnet, and iron cap inner wall and magnet fixed column reserve isolation space, for isolating the magnetic induction line of magnet, realize the magnetic shielding of magnet, effectively avoid the dust, iron filings and other substances existing in magnet adsorption installation environment, therefore, shadow area etc. will not be formed on the surface position of magnet corresponding module.

Description

Technical Field

[0001] This utility model relates to the field of display screen technology, and in particular to a demagnetizing LED display screen. Background Technology

[0002] Traditional LED displays typically use magnets to attach the LED panels for easy disassembly and maintenance. However, if the environment where they are installed contains a lot of dust and iron filings, these particles will adhere to the surface of the modules, blocking the light-emitting path of the LED beads. This creates a shadowy area shaped like a magnet, resulting in shadowed patches that reduce the brightness of the display and negatively impact its overall display quality. Utility Model Content

[0003] Based on this, a demagnetizing LED display screen that improves upon the above-mentioned defects is provided.

[0004] A demagnetizing LED display screen includes a cabinet and a module. The module is electrically connected to the cabinet. The cabinet is provided with a nut post, and a magnet fixing post is fixed on the nut post. A magnet groove is opened at the upper end of the magnet fixing post, and a magnet is fixed in the magnet groove. The module is provided with a lamp board, and an iron cap is soldered to the lamp board. The iron cap and the magnet are coaxially corresponding one-to-one. The iron cap is fastened to the outside of the magnet fixing post, and the inner diameter of the iron cap is larger than the outer diameter of the magnet fixing post.

[0005] The module is fixed to the housing by magnetic attraction between the magnet and the iron cap, which facilitates the disassembly and maintenance of the module. The iron cap completely encloses the magnet, and the inner wall of the iron cap has a reserved isolation space between it and the magnet fixing post to isolate the magnetic field lines of the magnet, thereby achieving magnetic shielding of the magnet. This effectively prevents the magnet from attracting dust, iron filings and other substances present in the installation and use environment. Therefore, no shadow area will be formed on the surface of the module corresponding to the magnet.

[0006] Preferably, the difference between the inner diameter of the iron cap and the outer diameter of the magnet fixing post is between 1mm and 2mm, that is, the interval between the inner wall of the iron cap and the outer wall of the magnet fixing post is between 0.5mm and 1mm. Within this range, a good magnetic shielding effect can be achieved.

[0007] Preferably, the module is provided with a solder pad, and a cross groove is provided on the back of the iron cap. One end of the iron cap located in the cross groove 221 is soldered to the solder pad.

[0008] During the soldering of the metal cap, reflow soldering is used. First, a layer of solder paste is brushed onto the pads. The shape of the solder paste corresponds to the four fan-shaped areas outside the cross groove on the back of the metal cap. In this way, the area corresponding to the cross groove does not need to be brushed with solder paste, saving solder paste usage costs. In addition, the cross groove has an air guiding effect. During reflow soldering, hot air can be introduced into the cross groove through it. This allows the hot air to melt the solder paste from both the inside and outside simultaneously, and the solder paste is heated evenly, improving the soldering efficiency and quality of the metal cap. Furthermore, during the solder paste cooling process, due to the design of the cross groove, a sealed space is not formed on the back of the metal cap. Hot air can be discharged from the cross groove, preventing uneven soldering or displacement of the metal cap caused by the inability to expel hot air, thus improving the positional accuracy of the soldering.

[0009] Preferably, the housing is provided with positioning holes, and the module is fixed with positioning pins. The positioning pins are inserted into the positioning holes for positioning, which ensures the installation accuracy of the light board and effectively improves the installation efficiency of the module.

[0010] The beneficial effects of this utility model are:

[0011] The aforementioned demagnetized LED display screen utilizes a magnet-encased iron cap design to enable rapid assembly of the module and housing, improving pre-maintenance efficiency. An isolation space between the inner wall of the iron cap and the magnet effectively isolates the magnetic field lines, preventing the magnet from attracting dust, iron filings, and other substances from the installation environment. This effectively avoids shadows on the module surface corresponding to the magnet, which could affect the display screen's performance. Furthermore, the cross-groove structure on the back of the iron cap effectively reduces the amount of solder paste used and provides excellent airflow, significantly improving soldering efficiency. It also prevents uneven soldering and displacement caused by a sealed space formed after soldering the pads to the back of the iron cap, which prevents hot air from escaping, ensuring soldering precision. The insertion and engagement of positioning holes and pins ensures module installation accuracy and further improves installation efficiency. Attached Figure Description

[0012] Figure 1 This is an explosion illustration of the present invention. Figure 1 ;

[0013] Figure 2 This is an explosion illustration of the present invention. Figure 2 ;

[0014] Figure 3 This is a cross-sectional schematic diagram of the present invention;

[0015] Figure 4 This is a schematic diagram of the lamp plate structure in this utility model. Figure 1 ;

[0016] Figure 5 This is a schematic diagram of the lamp plate structure in this utility model. Figure 2 .

[0017] in:

[0018] 1. Housing; 11. Nut post; 12. Magnet fixing post; 13. Magnet; 14. Positioning hole;

[0019] 2. Module; 21. Lamp board; 22. Iron cap; 221. Cross groove; 23. Solder pad; 24. Positioning pin. Detailed Implementation

[0020] To deepen the understanding of this utility model, the following detailed description will be provided in conjunction with embodiments. These embodiments are only used to explain this utility model and do not constitute a limitation on the scope of protection of this utility model.

[0021] It should be noted that when a component is said to be "fixed to" another component, it can be directly attached to the other component or there may be an intervening component. When a component is said to be "connected to" another component, it can be directly connected to the other component or there may be an intervening component. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this document are for illustrative purposes only.

[0022] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0023] like Figures 1 to 5 As shown, this utility model provides a demagnetizing LED display screen, including a housing 1 and a module 2. The module 2 is electrically connected to the housing 1. The housing 1 is provided with a nut post 11, and a magnet fixing post 12 is fixed on the nut post 11. A magnet groove is opened at the upper end of the magnet fixing post 12, and a magnet 13 is fixed in the magnet groove. The module 2 is provided with a lamp board 21, and an iron cap 22 is soldered to the lamp board 21. The iron cap 22 and the magnet 13 are coaxially corresponding one-to-one. The iron cap 22 is fastened to the outside of the magnet fixing post 12, and the inner diameter of the iron cap 22 is larger than the outer diameter of the magnet fixing post 12.

[0024] The module 2 is fixed to the housing 1 by magnetic attraction between magnet 13 and iron cap 22, which facilitates the disassembly and maintenance of module 2. The iron cap 22 completely encloses magnet 13, and the inner wall of iron cap 22 and magnet fixing post 12 are reserved with an isolation space to isolate the magnetic field lines of magnet 13, thereby achieving magnetic shielding of magnet 13 and effectively preventing magnet 13 from attracting dust, iron filings and other substances in the installation and use environment. Therefore, no shadow area will be formed on the module surface corresponding to magnet 13.

[0025] It should be noted that the structure of the iron cap 22 wrapping and demagnetizing the magnet 13 in this technical solution can be applied to display modules of various shapes. Therefore, the accompanying drawings show a fan-shaped module 2, such as... Figure 1 , Figure 2 As shown, square module 2 is also shown, such as Figure 4 , Figure 5 As shown, the protection scope of this technical solution is not limited by the shape of module 2.

[0026] Furthermore, the difference between the inner diameter of the iron cap 22 and the outer diameter of the magnet fixing post 12 is between 1mm and 2mm, that is, the interval between the inner wall of the iron cap 22 and the outer wall of the magnet fixing post 12 is between 0.5mm and 1mm. Within this range, a good magnetic shielding effect of the magnet 13 can be achieved.

[0027] Furthermore, the lamp board 21 is provided with a solder pad 23, and the back of the iron cap 22 is provided with a cross groove 221. The iron cap 22 is soldered to the solder pad 23 at one end of the cross groove 221.

[0028] During the soldering process of the iron cap 22, hot air soldering is used. First, a layer of solder paste is applied to the solder pad 23, such as... Figure 5 As shown, the shape of the solder paste corresponds to the four fan-shaped areas outside the cross groove 221 on the back of the cap 22. This eliminates the need for solder paste application to the area corresponding to the cross groove 221, saving on solder paste usage costs. In addition, the cross groove 221 has an air guiding effect. During hot air soldering, hot air can be guided into the cross groove 221, allowing the hot air to melt the solder paste from both the inside and outside sides simultaneously. This ensures uniform heating of the solder paste, improving the soldering efficiency and quality of the cap 22. Furthermore, during the solder paste cooling process, the design of the cross groove 221 prevents the formation of a sealed space on the back of the cap 22, allowing hot air to escape from the cross groove 221. This prevents uneven soldering or displacement of the cap 22 due to the inability to expel hot air, thus improving the positional accuracy of the soldering.

[0029] Furthermore, the housing 1 is provided with positioning holes 14, and the module 2 is fixed with positioning pins 24. The positioning pins 24 are inserted into the positioning holes 14 for positioning, ensuring the installation accuracy of the module 2 and effectively improving the installation efficiency of the module 2.

[0030] 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 illustrative of the principles of this 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 demagnetizing LED display screen, characterized in that, The module (2) is connected to the box (1) by telecommunications. The box (1) is provided with a nut post (11) and a magnet fixing post (12) is fixed on the nut post (11). A magnet groove is opened at the upper end of the magnet fixing post (12) and a magnet (13) is fixed in the magnet groove. The module (2) is provided with a lamp board (21) and an iron cap (22) is soldered on the lamp board (21). The iron cap (22) and the magnet (13) are coaxially aligned and correspond one-to-one. The iron cap (22) is fastened to the outside of the magnet fixing post (12) and the inner diameter of the iron cap (22) is larger than the outer diameter of the magnet fixing post (12).

2. The demagnetizing LED display screen according to claim 1, characterized in that, The difference between the inner diameter of the iron cap (22) and the outer diameter of the magnet fixing post (12) is between 1mm and 2mm.

3. The demagnetizing LED display screen according to claim 1, characterized in that, The lamp board (21) is provided with a solder pad (23), and the iron cap (22) has a cross groove (221) on the back. The iron cap (22) is soldered to the solder pad (23) at one end of the cross groove (221).

4. The demagnetizing LED display screen according to claim 1, characterized in that, The housing (1) is provided with a positioning hole (14), and the module (2) is fixed with a positioning pin (24). The positioning pin (24) is inserted into the positioning hole (14) for positioning.

Images