Moisture-proof spliced COB display module

Abstract

The utility model provides a moistureproof spliced COB display module, relates to COB display screen field, including COB display component, COB display component includes substrate, PCB, LED chip, sealant, reflector plate, lens film and radiating fin, PCB is located the surface of substrate, LED chip and sealant are located the surface of PCB, reflector plate is located the surface of sealant, lens film is located the surface of lens film, the lens film is located on the surface of the reflector plate, the lens film is located on the surface of the reflector plate, the lens film is located on the surface of the PCB, the lens film is located on the surface of the PCB, and the radiating fin is located on the surface of the PCB. The display screen assembly comprises a supporting frame, a fixing support, an electric control board, a power adapter and a fan; according to the utility model, through the packaging of the sealing compound, the sealing cooperation of the reflector plate and the lens film, and the moisture-proof effect of the heat dissipation fins, the contact between external humid air and an internal circuit and the LED chip is effectively isolated, the moisture-proof performance of the display screen is greatly improved, and through the use of the movable connection and plug-in design, the service life of the display screen is prolonged. Therefore, the COB display assembly is simpler and more convenient to splice, and the splicing gap is small.

Description

Technical Field

[0001] This utility model belongs to the field of COB display screens, specifically a moisture-proof splicing COB display module. Background Technology

[0002] COB display is an important technology and product in the LED display field. COB display modules are display modules based on COB (ChiponBoard) LED technology. They directly mount multiple LED chips on a substrate and encapsulate them into a whole. COB display modules are widely used in smart cities, smart conferences, commercial displays and other display fields. Their high brightness, high contrast and high protection features enable COB display modules to exhibit excellent display effects and stability in these fields.

[0003] COB display modules are typically used outdoors. In humid environments, COB display modules are prone to moisture damage, which can lead to short circuits, LED damage, and other problems, severely affecting the stability and lifespan of the display. In addition, the splicing method of traditional COB display modules is relatively complex, and the surrounding splicing gaps are relatively large, making it easy for moisture to seep into the interior, thus affecting the lifespan.

[0004] In summary, this utility model provides a moisture-proof splicing COB display module to solve the above problems. Utility Model Content

[0005] To solve the above-mentioned technical problems, this utility model provides the following technical solution:

[0006] A moisture-proof splicing COB display module includes a COB display component. The COB display component includes a substrate, a PCB board, an LED chip, a sealant, a reflective sheet, a lens film, and heat dissipation fins. The PCB board is located on the surface of the substrate, the LED chip and the sealant are both located on the surface of the PCB board, the reflective sheet is located on the surface of the sealant, the lens film is located on the surface of the reflective sheet, and the heat dissipation fins are located on the other side of the PCB board.

[0007] It also includes a display assembly, which includes a support frame, a fixed bracket, an electronic control board, a power adapter, and a fan. The COB display assembly is located on the surface of the fixed bracket and is movably connected to the fixed bracket. The support frame and the fixed bracket are used to provide support and protection for the COB display assembly. Several electronic control boards and power adapters are provided. The electronic control boards and power adapters are used to control the COB display assembly and provide power. The fan is used for ventilation and heat dissipation.

[0008] Furthermore, in this invention, the heat dissipation fins are fixedly connected to the PCB board, and the LED chip is adhered to the surface of the PCB board by conductive adhesive.

[0009] Furthermore, in this invention, the sealant is used to encapsulate the LED chip, and the through holes on the surface of the reflector are the same size as the LED chip.

[0010] Furthermore, in this utility model, the fan is installed on both sides of the support frame, the electronic control board is fixed to the front end of the inner cavity of the support frame, the power adapter is fixed to the back of the electronic control board, and the electronic control board is fixedly connected to the inner wall of the support frame.

[0011] Furthermore, in this utility model, a back plate is bolted to the back of the support frame, a plurality of insertion holes are provided on the surface of the electronic control board, and a pin is fixedly connected to the other side of the substrate.

[0012] Furthermore, in this invention, the end of the pin furthest from the substrate extends into the inner cavity of the socket and is inserted into the inner cavity of the socket.

[0013] Beneficial effects: This utility model has the following beneficial effects:

[0014] This invention effectively isolates external humid air from contact with the internal circuitry and LED chips through encapsulation, sealing of the reflective sheet and lens film, and the moisture-proof function of the heat sink fins, greatly improving the moisture resistance of the display screen. The support frame, fixed bracket, and backplate enhance the structural strength of the display screen, enabling it to withstand greater external forces and impacts, thus improving its durability. The combined use of heat sink fins and a fan effectively dissipates the heat generated by the LED chips, reducing the operating temperature of the display screen and extending its lifespan. The use of movable connections and plug-in designs makes splicing COB display components simpler and more convenient, with smaller splicing gaps reducing the possibility of moisture intrusion into the interior, thereby improving the stability of the display screen. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the main structure of this utility model;

[0016] Figure 2 This is a schematic diagram of the COB display component and the display screen component in a separated state according to this utility model;

[0017] Figure 3 This is a rear view structural diagram of the display screen assembly of this utility model;

[0018] Figure 4 This is a rear view structural diagram of the COB display component of this utility model;

[0019] Figure 5 This is a side view cross-sectional structural diagram of the COB display component of this utility model.

[0020] In the picture:

[0021] 1. COB display assembly; 11. Substrate; 12. PCB board; 13. LED chip; 14. Sealing adhesive; 15. Reflective sheet; 16. Lens film; 17. Heat sink fins; 2. Display assembly; 21. Support frame; 22. Fixing bracket; 23. Electronic control board; 24. Power adapter; 25. Fan; 26. Backplate; 27. Socket; 28. Pin. Detailed Implementation

[0022] To better understand the technical content of this utility model, specific embodiments are described below in conjunction with the accompanying drawings. Various aspects of this utility model are described in this disclosure with reference to the accompanying drawings, which illustrate numerous illustrative embodiments. The embodiments of this disclosure are not necessarily defined to include all aspects of this utility model. It should be understood that the various concepts and embodiments described above, as well as those described in more detail below, can be implemented in any of many ways, because the concepts and embodiments disclosed in this utility model are not limited to any particular implementation. Furthermore, some aspects of this utility model can be used alone or in any suitable combination with other aspects disclosed in this utility model.

[0023] Example 1

[0024] like Figure 1-5 As shown, this is the first embodiment of the present invention. This embodiment provides a moisture-proof splicing COB display module and display screen, including a COB display component 1. The COB display component 1 includes a substrate 11, a PCB board 12, an LED chip 13, a sealant 14, a reflective sheet 15, a lens film 16, and a heat dissipation fin 17. The PCB board 12 is located on the surface of the substrate 11, the LED chip 13 and the sealant 14 are both located on the surface of the PCB board 12, the reflective sheet 15 is located on the surface of the sealant 14, the lens film 16 is located on the surface of the reflective sheet 15, and the heat dissipation fin 17 is located on the other side of the PCB board 12.

[0025] It also includes a display assembly 2, which includes a support frame 21, a fixed bracket 22, an electronic control board 23, a power adapter 24, and a fan 25. The COB display assembly 1 is located on the surface of the fixed bracket 22 and is movably connected to the fixed bracket 22. The support frame 21 and the fixed bracket 22 are used to provide support and protection for the COB display assembly 1. Several electronic control boards 23 and power adapters 24 are provided. The electronic control boards 23 and power adapters 24 are used to control the COB display assembly 1 and provide power. The fan 25 is used for ventilation and heat dissipation.

[0026] like Figure 1-5As shown, the LED chip 13 in the COB display assembly 1 is completely encapsulated by the encapsulant 14. The encapsulant 14 not only fixes the LED chip 13, but also forms a moisture barrier, effectively isolating the external humid air from direct contact with the LED chip 13 and the PCB board 12, thus greatly reducing the occurrence of damage caused by moisture. The reflector 15 is located on the surface of the encapsulant 14, and the through holes on it match the size of the LED chip 13, ensuring effective light reflection and further sealing the environment around the LED chip 13, reducing the intrusion of moisture. The lens film 16 is located on the reflector 15, which, in addition to focusing and diffusing light, also increases the sealing of the entire display module, further improving the moisture resistance. The heat sink 17 is located on the PCB board. On the other side of board 12, the heat generated by LED chip 13 is effectively dissipated by increasing the heat dissipation area. This not only helps maintain the stable operation of the display module, but also reduces the internal moisture condensation caused by high temperature, thereby indirectly improving the moisture-proof effect. The COB display component 1 and the fixed bracket 22 are connected by a movable connection. This connection method is not only easy to install and disassemble, but also allows a certain amount of adjustment space to ensure that the splicing gap is minimized. The support frame 21 and the fixed bracket 22 provide support and protection for COB display component 1. Through the encapsulation of sealant 14, the sealing cooperation of reflective sheet 15 and lens film 16, and the moisture-proof function of heat dissipation fins 17, the contact between external humid air and internal circuit and LED chip 13 is effectively isolated, which greatly improves the moisture-proof performance of the display screen.

[0027] Example 2

[0028] Reference Figure 1-5 This is the second embodiment of the present invention, which is based on the previous embodiment.

[0029] In this embodiment, the heat sink 17 is fixedly connected to the PCB board 12, and the LED chip 13 is adhered to the surface of the PCB board 12 by conductive adhesive.

[0030] The encapsulant 14 is used to encapsulate the LED chip 13, and the through holes on the surface of the reflector 15 are the same size as those of the LED chip 13.

[0031] Fan 25 is installed on both sides of support frame 21, control board 23 is fixed to the front end of the inner cavity of support frame 21, power adapter 24 is fixed to the back of control board 23, and control board 23 is fixedly connected to the inner wall of support frame 21.

[0032] The back of the support frame 21 is bolted to a back plate 26, the surface of the control board 23 is provided with several holes 27, and the other side of the base plate 11 is fixedly connected to a pin 28.

[0033] The end of the pin 28 away from the substrate 11 extends into the inner cavity of the socket 27 and is inserted into the inner cavity of the socket 27.

[0034] like Figure 1-5 As shown, the COB display component 1 is the basic unit of the display screen, and the LED chip 13 is the core of light emission. When the electronic control board 23 receives the display signal, it transmits the electrical signal to the LED chip 13 through conductive adhesive, causing it to emit light. The encapsulant 14 encapsulates the LED chip 13 to protect it from the influence of the external environment. The encapsulant 14 can be made of epoxy resin. The fan 25 is installed on both sides of the support frame 21 to further reduce the operating temperature of the display screen and extend its service life through ventilation and heat dissipation. The plug-in design of the pin 28 and the socket 27 realizes the electrical connection between the electronic control board 23 and the COB display component 1, and also helps to ensure the stability of the splicing. The electronic control board 23 is responsible for receiving external control signals and converting them into electrical signals suitable for the operation of the LED chip 13. The power adapter 24 provides a stable power supply to the display screen to ensure the normal operation of each component.

[0035] In use, the COB display component 1 is the basic unit of the display screen, in which the LED chip 13 is the core of light emission. When the electronic control board 23 receives the display signal, it transmits the electrical signal to the LED chip 13 through conductive adhesive, causing it to emit light. The LED chip 13 is encapsulated by the sealing glue 14 to protect it from the influence of the external environment and to facilitate light diffusion. The reflective sheet 15 and the lens film 16 further reflect and focus the light, improving the display effect and making the light more uniform and bright. The heat dissipation fins 17 are located on the other side of the PCB board 12, which effectively dissipates the heat generated by the LED chip 13 by increasing the heat dissipation area, thus maintaining the stable operation of the component. The fan 25 is installed on both sides of the support frame 21. Ventilation and heat dissipation further reduce the operating temperature of the display screen and extend its service life. The COB display component 1 and the fixed bracket 22 are connected by a movable connection, which facilitates installation, disassembly and splicing, while ensuring that the splicing gap is minimized. The support frame 21 and the fixed bracket 22 provide support and protection for the COB display component 1 to prevent it from being damaged by external forces. The electronic control board 23 is responsible for receiving external control signals and converting them into electrical signals suitable for the operation of the LED chip 13. The power adapter 24 provides a stable power supply to the display screen to ensure the normal operation of each component. The plug-in design of the pin 28 and the socket 27 realizes the electrical connection between the electronic control board 23 and the COB display component 1, and also helps to ensure the stability of the splicing.

[0036] All standard parts used in this application can be purchased from the market, and can be customized according to the description and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts and equipment adopt conventional models in the prior art. The control method is automatic control through a controller. The control circuit of the controller can be implemented by simple programming by those skilled in the art and is common knowledge in the field. Since this application is mainly used to protect mechanical devices, the control method and circuit connection will not be explained in detail in this application.

[0037] Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Those skilled in the art to which this invention pertains can make various modifications and refinements without departing from the spirit and scope of the present invention. Therefore, the scope of protection of this invention shall be determined by the claims.

Claims

1. A moisture-proof spliced COB display module, comprising a COB display assembly (1), characterized in that: The COB display assembly (1) comprises a substrate (11), a PCB plate (12), LED chips (13), encapsulating glue (14), a reflecting sheet (15), a lens film (16) and a heat dissipation fin (17), the PCB plate (12) is located on the surface of the substrate (11), the LED chips (13) and the encapsulating glue (14) are both located on the surface of the PCB plate (12), the reflecting sheet (15) is located on the surface of the encapsulating glue (14), the lens film (16) is located on the surface of the reflecting sheet (15), and the heat dissipation fin (17) is located on the other side of the PCB plate (12); Further comprising a display screen assembly (2), the display screen assembly (2) comprises a support frame (21), a fixing support (22), an electric control board (23), a power adapter (24) and a fan (25), the COB display assembly (1) is located on the surface of the fixing support (22) and is movably connected with the fixing support (22), the support frame (21) and the fixing support (22) are used for supporting and protecting the COB display assembly (1), the electric control board (23) and the power adapter (24) are provided with a plurality of, the electric control board (23) and the power adapter (24) are used for controlling the COB display assembly (1) and providing electric energy, and the fan (25) is used for ventilation and heat dissipation.

2. The moisture-proof spliced COB display module according to claim 1, characterized in that: The heat dissipation fin (17) is fixedly connected with the PCB plate (12), and the LED chips (13) are adhered to the surface of the PCB plate (12) through conductive glue.

3. The moisture-proof spliced COB display module of claim 1, wherein: The encapsulating glue (14) is used for encapsulating the LED chips (13), and the through holes on the surface of the reflecting sheet (15) have the same size as the LED chips (13).

4. The moisture-proof spliced COB display module of claim 1, wherein: The fan (25) is installed on the two sides of the support frame (21), the electric control board (23) is fixed to the front end of the inner cavity of the support frame (21), the power adapter (24) is fixed to the back surface of the electric control board (23), and the electric control board (23) is fixedly connected with the inner wall of the support frame (21).

5. The moisture-proof spliced COB display module of claim 1, wherein: The back surface of the support frame (21) is connected with a back plate (26) through bolts, the surface of the electric control board (23) is provided with a plurality of jack holes (27), and the other side of the substrate (11) is fixedly connected with a bolt (28).

6. The moisture-proof spliced COB display module according to claim 5, characterized in that: One end of the bolt (28) away from the substrate (11) extends to the inner cavity of the jack hole (27) and is inserted into the inner cavity of the jack hole (27).

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