A cabinet and module position conduction structure and an LED display screen

Abstract

This utility model provides a conductive structure between a housing and a module, and an LED display screen, relating to the field of electrical connection structure technology. It includes a metal housing frame and a lamp panel. The housing frame has multiple support slots in each lamp panel area, and the lamp panel has multiple copper foil slots corresponding to the support slots. The support slots of the housing frame directly contact the copper foil slots of the lamp panel through assembly force to achieve electrical conductivity. This solution improves the reliability of the electrical connection between the lamp panel and the housing frame.

Description

Technical Field

[0001] This utility model relates to the field of electrical connection structure technology, specifically to a housing and module interconnection structure and an LED display screen. Background Technology

[0002] In the digital age, electromagnetic compatibility (EMC) of LED displays has become a critical technical requirement in product design and manufacturing. As a prerequisite for entering the global market, EMC performance is not only essential for obtaining certifications such as China's 3C, the EU's CE, and the US's FCC, but also a core element ensuring stable equipment operation. This is especially true for indoor LED displays, where their usage environment is highly integrated with people's daily activities, making EMC performance particularly important. To meet EMC requirements, the lamp board and the cabinet need to be electrically integrated to achieve conductivity. However, existing technologies for achieving conductivity between the lamp board and the cabinet frame have significant shortcomings.

[0003] Currently, such as Figure 1 and Figure 2 As shown, some products use spring 3 or spring sheet 4 as elastic conductive elements, connected to connection point 7 of lamp board 1 to achieve electrical connection between lamp board 1 and cabinet frame 2, and the spring sheet 4 is fixed to the cabinet frame 2 by screw 6. However, this method has many problems. First, spring 3 is usually made of thin round metal wire, with a small contact area with lamp board 1, and the elasticity of spring 3 will gradually weaken over time, resulting in a decrease in the conductivity of the contact point. Second, the introduction of these intermediate conductive parts, whether spring 3 or spring sheet 4, will increase the conduction resistance, thus affecting the overall conductivity. In addition, in order to ensure a good contact effect, spring 3 or spring sheet 4 needs a certain amount of compression. This compression will generate a reverse thrust on lamp board 1, causing lamp board 1 to bulge outward, resulting in an uneven surface of lamp board 1 and affecting the display effect. At the same time, this reverse thrust is opposite to the assembly force of lamp board 1, increasing the assembly difficulty of lamp board 1 and causing the internal stress of the product to increase, thereby shortening the product's service life. More importantly, since the contact positions of spring 3 or spring sheet 4 occupy a large space, each module can usually only be set with four contact positions, which to some extent limits the reliability and uniformity of conduction.

[0004] In summary, the existing method of conducting light panels and housing frames not only increases assembly costs, but also causes problems such as unstable conduction effect, light panel deformation, and reduced lifespan due to the presence of intermediate conductive parts. Utility Model Content

[0005] This utility model discloses a conductive structure between the housing and the module, which aims to solve the problems mentioned above.

[0006] The present invention adopts the following solution:

[0007] A housing and module interconnection structure includes a metal housing frame and a lamp board. The housing frame has multiple support positions in each lamp board area, and the lamp board has multiple copper foil positions corresponding to the support positions. The support positions of the housing frame directly contact the copper foil positions of the lamp board through assembly force to achieve electrical conductivity.

[0008] Furthermore, at least four support positions are provided on the connecting surface of the housing frame, and four copper foil positions corresponding one-to-one with the support positions are provided on the connecting surface of the lamp panel.

[0009] Furthermore, the light panel is fixed to the housing frame with screws.

[0010] Furthermore, the support is integrally formed on the box frame.

[0011] Furthermore, the housing frame is formed by die casting of aluminum alloy.

[0012] Furthermore, the lamp panel comprises a glass fiber board and a copper foil layer pressed together, with the outermost layer being a copper foil layer.

[0013] Furthermore, the multiple copper layers between the lamp panels are electrically connected through conductive holes, which include through holes and an electroplated layer formed within the conductive holes. The electroplated layer is adapted to conduct electricity between the multiple copper layers.

[0014] This utility model also provides an LED display screen, including the aforementioned housing and module position conductive structure.

[0015] Beneficial effects:

[0016] This solution addresses the problems of low conductivity, complex assembly, high cost, and lamp board deformation in existing technologies by using an aluminum alloy die-cast cabinet frame support design, a copper foil design for the lamp board, and a direct conductive method between the two. It provides an efficient, reliable, and low-cost technical solution for indoor LED displays. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of a structure in the prior art that uses a spring to achieve electrical conductivity between the lamp panel and the cabinet frame;

[0018] Figure 2 This is a schematic diagram of the existing technology that uses spring clips to achieve electrical conductivity between the lamp panel and the cabinet frame;

[0019] Figure 3 This is a schematic diagram of a conductive structure between the housing and the module in this embodiment;

[0020] Figure 4This is a schematic diagram of the box frame of a box and module position conduction structure according to this embodiment;

[0021] Figure 5 This is a schematic diagram of the structure of a lamp board with a box and module position conduction structure in this embodiment;

[0022] Figure 6 This is a schematic diagram of a two-layer plate structure for a light panel with a conductive structure between the housing and the module in this embodiment;

[0023] Figure 7 This is a schematic diagram of a four-layer plate structure for a light panel with a conductive structure between the housing and the module in this embodiment;

[0024] Figure 8 This is a schematic diagram of a lamp board structure with conductive holes in which the housing and module are connected in this embodiment.

[0025] Attached reference numerals: 1. Lamp board, 11. Copper sheet, 12. Fiberglass board, 13. Copper sheet layer, 14. Conductive hole, 15. Electroplating layer, 2. Housing frame, 21. Support, 3. Spring, 4. Spring piece, 5. LED bead, 6. Screw, 7. Contact point. Detailed Implementation

[0026] Combination Figures 3 to 5 As shown, this embodiment provides an LED display screen, including a cabinet and module interconnection structure. The cabinet and module interconnection structure includes a metal cabinet frame 2 and a lamp panel 1. The cabinet frame 2 has multiple support positions 21 in each area of ​​the lamp panel 1. The lamp panel 1 has multiple copper foil positions 11 corresponding one-to-one with the support positions 21. The support positions 21 of the cabinet frame 2 directly contact the copper foil positions 11 of the lamp panel 1 through assembly force to achieve electrical conductivity.

[0027] Preferably, at least four support positions 21 are provided on the connecting surface of the housing frame 2, and four copper foil positions 11 corresponding to the support positions 21 are provided on the connecting surface of the lamp panel 1.

[0028] For example, in this embodiment, the housing frame 2 is made of aluminum alloy and manufactured using a die-casting process. Its surface is precision-machined to form 14 support positions 21. The height and shape of these support positions 21 are rigorously optimized to ensure sufficient assembly force during the assembly of the lamp panel 1, while avoiding applying additional stress to the lamp panel 1. Each lamp panel 1 has 14 copper foil positions 11 on its connection surface area, and their distribution is precisely calculated to ensure uniform force distribution on the copper foil positions 11 of the lamp panel 1. The surface of the support positions 21 is polished to improve conductivity and reduce contact resistance. Furthermore, the design of the position and number of support positions 21 significantly improves electromagnetic compatibility (EMC) performance, making the current distribution on the lamp panel 11 more uniform, thereby reducing electromagnetic interference. It should be noted that the number of support positions 21 can be increased as needed, and the support positions 21 are arranged on the four sides and in the middle of the housing frame 2. Since the bracket 21 is integrally formed on the housing frame 2, no additional processing or assembly is required. Furthermore, the bracket 21 is made of metal and can be electrically connected to the copper pad 11 to achieve electrical connection between the housing frame 2 and the lamp board 1.

[0029] In this embodiment, the lamp panel 1 is fixed to the housing frame 2 with screws. Other screw mounting positions can be provided on the housing frame 2 to connect the lamp panel 1 to the housing frame 2.

[0030] Combination Figures 6 to 8 As shown, the lamp panel 1 comprises alternating layers of fiberglass board 12 and copper foil 13, with the outermost layer being copper foil 13. The multiple copper foil layers 13 of the lamp panel 1 are electrically connected through conductive holes 14. Multiple LED beads 5 are disposed on the lamp panel 1. Each conductive hole 14 includes a through-hole and an electroplated layer 15 formed within the conductive hole 14, the electroplated layer 15 being suitable for conducting the multiple layers of copper foil 13. Specifically, the substrate of the lamp panel 1 is fiberglass board 12, and a copper foil layer 13 is covered on its surface. The copper foil layer 13 can be formed by electroplating. Then, excess copper foil can be removed from the upper and lower surfaces of the lamp panel 1 through a chemical etching process, forming multiple conductive holes 14 on the lamp panel 1. The positions of these copper foil positions 11 correspond one-to-one with the support positions 21 of the housing frame 2, ensuring a tight fit after assembly. The lamp panel 1 is divided into two-layer and four-layer types, where the number of copper foil layers 13 is even. For example, a two-layer board is made by electroplating copper foil layers 13 on both the upper and lower surfaces of a single-layer fiberglass board 12; a four-layer board is made by electroplating copper foil layers 13 on the upper and lower surfaces of two layers of fiberglass board 13, and then pressing them together with a layer of fiberglass board 12 in the middle. Each copper foil layer 13 of the lamp board 1 is processed by chemical etching to form through holes in order to form conductive holes 14, and an electroplated layer 15 is formed in the conductive holes 14 to make all the copper foil layers 13 conductive.

[0031] Combination Figures 3 to 5As shown, during installation, the lamp board 1 is mounted onto the cabinet frame 2, ensuring that the copper foil position 11 of the lamp board 1 is tightly fitted with the support position 21 of the cabinet frame 2. Then, the lamp board 1 and the cabinet frame 2 are secured with screws. No intermediate conductive parts are needed during assembly; the connection is achieved directly through the assembly force between the lamp board 1 and the cabinet frame 2, and conductivity is achieved through the metal support position 21 on the cabinet frame 2 and the copper foil position 11 on the lamp board 1. Specifically, the lamp board 1 is fixed to the cabinet frame 2 with screws or other fixing devices, and the assembly force creates a stable contact surface between the copper foil position 11 and the support position 21. Because there is no reverse thrust generated by elastic parts, the surface flatness of the lamp board 1 is guaranteed, avoiding the problem of decreased display effect due to deformation of the lamp board 1. Furthermore, due to the absence of intermediate conductive parts, the conduction resistance is very small, thus significantly improving conductivity.

[0032] This embodiment solves the problems of low conductivity reliability, complex assembly, high cost, and lamp board deformation in the prior art by designing the aluminum alloy die-cast cabinet frame 2 support position 21, the copper skin position 11 of the lamp board 1, and the direct conduction between the two. It provides an efficient, reliable and low-cost technical solution for indoor LED displays.

[0033] It should be understood that the above are only preferred embodiments of the present utility model, and the protection scope of the present utility model is not limited to the above embodiments. All technical solutions that fall within the scope of the present utility model are protected by the present utility model.

[0034] The accompanying drawings used in the above description of the embodiments only show some embodiments of the present invention and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained from these drawings without creative effort.

Claims

1. A conductive structure for a housing and a module, characterized in that, The device includes a metal housing frame and a lamp panel. The housing frame has multiple support positions in each lamp panel area, and the lamp panel has multiple copper foil positions that correspond one-to-one with the support positions. The support positions of the housing frame directly contact the copper foil positions of the lamp panel through assembly force to achieve electrical conduction.

2. The housing and module interconnection structure according to claim 1, characterized in that, At least four brackets are provided on the connecting surface of the housing frame, and the four brackets are located at the four corners of the housing frame. At least four copper foil positions corresponding to the brackets are provided on the connecting surface of the lamp panel.

3. The housing and module interconnection structure according to claim 1, characterized in that, The light panel is fixed to the housing frame with screws.

4. The housing and module interconnection structure according to claim 1, characterized in that, The support is integrally formed on the box frame.

5. The housing and module interconnection structure according to claim 1, characterized in that, The box frame is formed by die casting of aluminum alloy.

6. The housing and module interconnection structure according to claim 1, characterized in that, The light panel is formed by pressing glass fiber board and copper foil layer alternately, with the outermost layer being copper foil layer.

7. The housing and module interconnection structure according to claim 6, characterized in that, The multiple copper layers between the lamp panels are electrically connected through conductive holes. The conductive holes include through holes and an electroplated layer formed in the conductive holes. The electroplated layer is adapted to conduct electricity between the multiple copper layers.

8. An LED display screen, characterized in that, Includes the housing and module position conductive structure as described in any one of claims 1-7.

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