Outdoor small-pitch round pie display screen

Abstract

This invention relates to the field of display device technology and discloses an outdoor small-pitch circular display screen, comprising a double-sided screen body with a waterproof sealing ring on the inner side of its frame and multiple metal sealing strips fixed to the outer side by screws; a fixed bracket is set in the middle of the body, and an integrated circular PCBA lamp board, power module, control module, and temperature-controlled fan are all set on the outer side of the fixed bracket; air inlets and outlets are respectively opened in the upper and lower parts of the screen body. This invention solves the problems of mosaic image quality and uneven screen surface caused by splicing by using a highly integrated circular PCBA lamp board, making the screen structure compact and ultra-thin; the tight cooperation between the waterproof sealing ring and the sealing strips constitutes an excellent waterproof component; and the active heat dissipation airflow formed by the temperature-controlled fan and the air inlets and outlets improves the heat dissipation efficiency of the device, resulting in a long service life, good protection performance, and stable and reliable operation.

Description

Technical Field

[0001] This invention relates to the field of display device technology, specifically to an outdoor small-pitch circular display screen. Background Technology

[0002] LED displays, with their advantages of high brightness and high color saturation, have been widely used in outdoor advertising, information dissemination, and other fields. In recent years, in order to meet diverse aesthetic and scene requirements, many irregularly shaped displays have emerged, among which circular displays (commonly known as round disc screens) are highly favored due to their unique shape.

[0003] However, current outdoor circular displays typically employ a method of assembling multiple irregularly shaped or irregularly sized fan-shaped or irregularly shaped display modules, along with power supplies, control cards, and other separate components, into a prefabricated circular cabinet structure. This technical solution suffers from the following drawbacks in practice: Firstly, the complex structure prevents it from being made thinner and lighter, resulting in poor display quality. The method of forming a circle by splicing modules makes it difficult to eliminate physical seams between multiple modules, easily leading to dark or bright lines on the display screen, creating a mosaic-like image quality, and making it difficult to guarantee the flatness of the entire display surface, affecting the viewing experience. Secondly, the numerous separate modules and components result in a complex internal structure and numerous connections, increasing assembly difficulty and potential failure points, and making the entire screen heavy and bulky, preventing a thinner and lighter design and limiting application scenarios.

[0004] Poor waterproofing performance and low outdoor reliability are critical challenges for outdoor applications. Due to the numerous seams in the aforementioned structure and the dispersed layout of internal components, achieving a reliable and durable waterproof seal for the entire enclosure is extremely difficult. This problem is exacerbated by the decreasing pixel pitch of displays, severely impacting the product's reliability and lifespan in harsh outdoor conditions such as rain and humidity.

[0005] Poor heat dissipation affects product lifespan. Small-pitch LED displays are characterized by high integration and high power consumption, generating significant heat during operation. The complex internal structure of traditional circular displays and the commonly used passive cooling methods make it difficult to dissipate heat quickly and effectively, leading to heat buildup inside the screen. Prolonged overheating not only affects the brightness and color consistency of the LED chips but also accelerates the aging of components such as the power supply and control chips, shortening the overall lifespan of the display. Therefore, an outdoor small-pitch circular display is proposed to address these issues. Utility Model Content

[0006] To overcome the above shortcomings, this utility model provides an outdoor small-pitch circular display screen, which aims to improve the problems of complex structure, poor waterproof performance and heat dissipation in the existing technology, resulting in low reliability and short service life of the display screen.

[0007] To achieve the above objectives, the present invention adopts the following technical solution: An outdoor small-pitch circular display screen includes a double-sided screen body, a fixed bracket is provided in the middle of the double-sided screen body, a display component is provided on the outside of the fixed bracket, a waterproof sealing ring is provided on the inner side of the frame of the double-sided screen body, and multiple sealing strips are provided on the outer side of the frame of the double-sided screen body. The display component includes an integrated circular PCBA light board, a power module, and a control module. The integrated circular PCBA light board is located in the middle of the frame of the double-sided screen. The waterproof sealing ring is fitted around the outer periphery of the integrated circular PCBA light board. The power module is located on the outside of the fixed bracket. The control module is located on the outside of the fixed bracket. The integrated circular PCBA light board and the control module are both electrically connected to the power module. The integrated circular PCBA light board and the control module are electrically connected to each other. As a further description of the above technical solution: The integrated circular PCBA light board is composed of multiple LEDs, ICs, and multiple electronic components mounted on a single circular PCB. As a further description of the above technical solution: A temperature-controlled fan is fixedly connected to the outside of the fixed bracket, and the temperature-controlled fan is electrically connected to the power module. As a further description of the above technical solution: The integrated circular PCBA light board, control module, and temperature control fan are all powered by the power module. As a further description of the above technical solution: All of the sealing strips are metal parts, and multiple mounting holes are provided in the middle of the multiple sealing strips and the double-sided screen body. The mounting holes in the middle of the multiple sealing strips and the double-sided screen body are the same size. Multiple sealing strips are fixed to the outside of the frame of the double-sided screen body by multiple screws. As a further description of the above technical solution: The waterproof sealing ring and multiple sealing strips fitted around the outer periphery of the integrated circular PCBA lamp board cooperate to form a waterproof component; As a further description of the above technical solution: Both sides of the frame of the dual-sided screen body are provided with an integrated circular PCBA light board, and multiple sealing strips are located on the outside of the integrated circular PCBA light board and the waterproof sealing ring. As a further description of the above technical solution: The diameter of the dual-sided screen body is less than or equal to 700 mm, and the overall thickness of the dual-sided screen body does not exceed 50 mm.

[0008] This utility model has the following beneficial effects: 1. In this utility model, a waterproof sealing ring is set on the inner side of the frame of the double-sided screen body, and multiple metal sealing strips are added on the outer side of the frame, so that the sealing ring and the strips cooperate with each other to form a tight waterproof component. This dual waterproof structure, combining the inside and outside, can effectively prevent rainwater and moisture from penetrating into the screen body, ensuring that the display screen can operate stably for a long time in outdoor environments, and improving the weather resistance and reliability of the product.

[0009] 2. In this utility model, a temperature-controlled fan is installed on the outside of the fixed bracket, and air inlet and outlet holes are cleverly opened at the top and bottom of the screen body, respectively. The temperature-controlled fan can intelligently start according to the internal temperature of the screen body, drawing in cool air from below, carrying away heat through the interior, and then expelling it from above, forming an efficient heat dissipation airflow. This solves the heat dissipation problem caused by the high-density integration of small-pitch LED displays, ensuring the performance and lifespan of the display components.

[0010] 3. In this utility model, an integrated circular PCBA light board is adopted, which highly integrates LEDs, ICs, and other electronic components on a single PCB, simplifying the internal structure and electrical connections, and improving production efficiency and reliability. Combined with an ultra-thin design of no more than 50mm and metal pressure strips fixed with screws, the entire display screen has a compact, robust, and stable structure that is both aesthetically pleasing and easy to install and maintain. Attached Figure Description

[0011] Figure 1 This is a three-dimensional schematic diagram of an outdoor small-pitch circular display screen proposed in this utility model; Figure 2 This is a schematic diagram of the sealing strip for an outdoor small-pitch circular display screen proposed in this utility model; Figure 3 This is a schematic diagram of the structure of a waterproof sealing ring for an outdoor small-pitch circular display screen proposed in this utility model; Figure 4 This is a schematic diagram of the display component of an outdoor small-pitch circular display screen proposed in this utility model; Figure 5 This is an exploded view of an outdoor small-pitch circular display screen proposed in this utility model.

[0012] Legend: 1. Double-sided screen main body; 2. Fixing bracket; 3. Integrated circular PCBA light board; 4. Waterproof sealing ring; 5. Sealing strip; 6. Power module; 7. Control module; 8. Temperature control fan. Detailed Implementation

[0013] 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.

[0014] Reference Figures 1-3 An embodiment of this utility model is provided: an outdoor small-pitch circular display screen, including a double-sided screen body 1, a fixed bracket 2 is provided in the middle of the double-sided screen body 1, a display component is provided on the outside of the fixed bracket 2, a waterproof sealing ring 4 is provided on the inner side of the frame of the double-sided screen body 1, and a plurality of sealing strips 5 are provided on the outer side of the frame of the double-sided screen body 1. The display components include an integrated circular PCBA light board 3, a power module 6, and a control module 7. The integrated circular PCBA light board 3 is located in the middle of the frame of the double-sided screen body 1. A waterproof sealing ring 4 is fitted around the outer periphery of the integrated circular PCBA light board 3. The power module 6 is located on the outside of the fixed bracket 2, and the control module 7 is located on the outside of the fixed bracket 2. Both the integrated circular PCBA light board 3 and the control module 7 are electrically connected to the power module 6, and the integrated circular PCBA light board 3 and the control module 7 are electrically connected to each other.

[0015] Specifically, the double-sided screen body 1 consists of a precision-machined circular frame from a die-cast profile and a support frame. The double-sided screen body 1 provides support for the fixed bracket 2, enabling the fixed bracket 2 to operate stably. This, in turn, provides stable support for the display components, allowing them to operate stably. The display components then display the static and dynamic images that need to be shown. The double-sided screen body 1 also provides support for multiple sealing strips 5 and waterproof sealing rings 4, ensuring their stable operation. The waterproof sealing rings 4 and sealing strips 5 work together to form a waterproof structure, blocking rainwater and moisture from entering the integrated circular PCBA light board 3. This provides excellent waterproofing for the integrated circular PCBA light board 3 and prevents it from getting damp, ensuring its stable operation.

[0016] The waterproof sealing ring 4 provides waterproof protection for the integrated circular PCBA light board 3, ensuring that the integrated circular PCBA light board 3 is not affected by rain or moisture during operation. The double-sided screen body 1 provides support for the integrated circular PCBA light board 3, enabling the integrated circular PCBA light board 3 to operate stably. The signal interface of the integrated circular PCBA light board 3 is HUB75. The fixed bracket 2 provides support for the power module 6 and the control module 7, enabling them to operate stably. The power module 6 is electrically connected to the integrated circular PCBA lamp board 3 and the control module 7, providing the necessary power for their operation and ensuring continuous operation. The control module 7 is electrically connected to the integrated circular PCBA lamp board 3, allowing it to receive externally transmitted video and image signals, process and analyze them, convert the processed display data into control commands, and transmit these commands to the integrated circular PCBA lamp board 3 to control its operation and thus display the image. Please see the appendix Figure 4 In a preferred embodiment of the present invention, the integrated circular PCBA light board 3 is composed of multiple LEDs, ICs and multiple electronic components mounted on a single circular PCB.

[0017] Specifically, multiple LEDs are mounted on a single circular PCB to form an LED matrix, and ICs and multiple electronic components are highly integrated. These electronic components mainly include passive devices that provide basic protection for the normal operation of the circuit and devices that realize specific functions. These electronic components mainly include resistors, capacitors, and board-to-board connectors. Resistors primarily function as current limiters and voltage dividers in the circuit, enabling precise control of the current flowing through each LED and ensuring that the LED operates at its optimal brightness and lifespan. Resistors also provide stable logic levels for the signal pins of the IC chip. Capacitors play a crucial role in power filtering and signal decoupling. Power filtering capacitors can filter out power noise from the power module 6, providing a clean power supply environment for the IC and LEDs. Signal decoupling capacitors are typically placed close to the power pins of the IC to stabilize the voltage of local circuits and ensure the integrity of high-speed data signals during transmission. Board-to-board connectors serve as physical interfaces, enabling data communication between the integrated circular PCBA lamp board 3 and the control module 7, as well as power delivery to the power module 6. In some embodiments with higher requirements for display uniformity, multiple electronic components may also include a memory chip, such as an EEPROM. This memory chip stores the brightness and color correction data of each LED pixel, allowing the display screen to call upon this data for compensation during operation, thereby obtaining a display with highly uniform color and brightness.

[0018] Please see the appendix Figure 1 and attached Figure 4 In a preferred embodiment of the present invention, a temperature-controlled fan 8 is fixedly connected to the outside of the fixed bracket 2. The temperature-controlled fan 8 is electrically connected to the power module 6. The upper and lower parts of the double-sided screen body 1 are respectively provided with an air outlet and an air inlet. The air outlet of the temperature-controlled fan 8 is directly opposite the air outlet on the upper part of the double-sided screen body 1.

[0019] Specifically, the fixed bracket 2 provides a stable physical support for the temperature control fan 8, ensuring that the temperature control fan 8 will not generate excessive vibration or displacement when running at high speed, thus ensuring the structural stability of the heat dissipation system. The power required for the operation of the temperature control fan 8 is continuously supplied by the power module 6 through electrical connection, thereby enabling the temperature control fan 8 to operate stably.

[0020] By opening air outlets and air inlets on the upper and lower parts of the double-sided screen body 1 respectively, a basic air duct conforming to the physical characteristics of air thermal convection is pre-set. When the electronic components such as the integrated circular PCBA lamp board 3 and power module 6 inside the display screen generate heat, the air temperature inside the device rises and the density decreases, naturally forming a slow flow from bottom to top. After the temperature control fan 8 is started, it actively and forcefully draws in cool air from the outside through the lower air inlet. After the cool air enters the screen body, it flows directly over the heat-generating components and exchanges heat fully with the surface of the electronic components, thereby quickly absorbing heat. Subsequently, the hot air carrying a large amount of heat is driven by the temperature control fan 8 to accelerate upward flow and is finally quickly discharged to the outside of the device through the upper air outlet, thus forming a continuous and high-speed air circulation system inside the device.

[0021] The operation of the temperature-controlled fan 8 greatly accelerates the air circulation rate inside the equipment, allowing the heat inside the equipment to be discharged more efficiently and quickly through the air outlet. This improves the cooling efficiency of the equipment, effectively prevents overheating of electronic components due to heat accumulation during long-term operation, ensures the brightness and color consistency of LED displays, extends the service life of electronic components, and enables the equipment to operate reliably for a long time.

[0022] Please see the appendix Figure 1 - Appendix Figure 4In a preferred embodiment of the present invention, all sealing strips 5 are metal parts. Multiple mounting holes are provided in the middle of both the multiple sealing strips 5 and the double-sided screen body 1. The mounting holes in the middle of the multiple sealing strips 5 and the double-sided screen body 1 are the same size. Multiple sealing strips 5 are fixed to the outside of the frame of the double-sided screen body 1 by multiple screws. The waterproof sealing ring 4 and the multiple sealing strips 5 fitted around the outer periphery of the integrated circular PCBA lamp board 3 cooperate with each other to form a waterproof component. Integrated circular PCBA lamp boards 3 are provided on both sides of the frame of the double-sided screen body 1. The multiple sealing strips 5 are located on the outside of the integrated circular PCBA lamp board 3 and the waterproof sealing ring 4.

[0023] Specifically, by using metal components as the material for multiple sealing strips 5, sufficient structural strength and rigidity are provided for the waterproof component, ensuring that it will not fail due to material aging during long-term use in outdoor environments. Multiple mounting holes of the same size are opened in the middle of the multiple sealing strips 5 and the double-sided screen body 1, providing a precise positioning reference for subsequent assembly. This allows multiple screws to pass through smoothly and securely fix the multiple sealing strips 5 to the outer edge of the double-sided screen body 1. When tightened by multiple screws, the robust multiple sealing strips 5 apply a continuous and uniform clamping force to the waterproof sealing ring 4. The elastic waterproof sealing ring 4 is compressed, thereby tightly filling all the tiny gaps between the edge of the integrated circular PCBA light board 3 and the frame of the double-sided screen body 1. The waterproof sealing ring 4 and multiple sealing strips 5 cooperate with each other to form a waterproof component. Since the integrated circular PCBA light board 3 is provided on both sides of the frame of the double-sided screen body 1, the waterproof component composed of the waterproof sealing ring 4 and multiple sealing strips 5 is also provided on both sides of the double-sided screen body 1, thereby providing waterproof capability for both sides of the entire outdoor small-pitch circular display screen, thus preventing external rainwater or moisture from penetrating into the interior of the display screen.

[0024] In a preferred embodiment of the present invention, the diameter of the double-sided screen body 1 is less than or equal to 700 mm, and the overall thickness of the double-sided screen body 1 does not exceed 50 mm. By adopting an integrated circular PCBA lamp board 3, the previously separate multiple display modules, complex internal support structure, and cumbersome connection cables are integrated, eliminating the need for a heavy traditional cabinet to accommodate and fix the various components. This allows the present invention to produce products with a pitch of 2.0 mm or less, thereby providing a more delicate and high-definition image quality when viewed at close range outdoors. At the same time, core components such as the power module 6 and control module 7 are compactly arranged on the central fixed bracket 2, further optimizing the internal space layout and making the appearance of the double-sided screen body 1 lighter and more beautiful, getting rid of the bulkiness of traditional outdoor displays. In addition, the smaller thickness and lighter weight also reduce the load-bearing requirements of the installation environment, simplify the installation and maintenance process, and save related structural support costs. Combining the above advantages, the overall cost performance and product competitiveness of the outdoor circular display screen are improved.

[0025] Working principle: The entire display screen is based on the double-sided screen body 1 as the basic frame. In the middle of the double-sided screen body 1, there is a fixed bracket 2. The fixed bracket 2 provides a unified installation benchmark and physical support for the power module 6, control module 7 and temperature control fan 8 inside the display screen, ensuring the stability of the internal layout.

[0026] The control module 7 in the display component is responsible for receiving external video or image signals. After processing and parsing, it sends the display data to the integrated circular PCBA light board 3. The integrated circular PCBA light board 3 is a single circular PCB circuit board that integrates multiple LEDs, ICs, and multiple electronic components. When the integrated circular PCBA light board 3 receives the instruction from the control module 7, it drives the LED matrix on the single circular PCB to light up, turn off, or change grayscale, thereby combining to present dynamic or static images. In the double-sided screen design, integrated circular PCBA light boards 3 are set on both sides of the frame of the double-sided screen body 1 to realize double-sided display. During the entire display process, the power module 6 continuously provides the required power to the integrated circular PCBA light board 3 and the control module 7 through electrical connection.

[0027] A waterproof sealing ring 4 is pre-installed on the inner side of the frame of the double-sided screen body 1. After the integrated circular PCBA light board 3 is installed in place, multiple metal sealing strips 5 are fitted around the outer perimeter of the integrated circular PCBA light board 3. Using multiple mounting holes opened in the middle of the multiple sealing strips 5 and the double-sided screen body 1, multiple screws are used to fasten the multiple sealing strips 5 to the outer side of the frame of the double-sided screen body 1. The tightening action of the screws causes the multiple sealing strips 5 to apply uniform pressure to the waterproof sealing ring 4, causing the waterproof sealing ring 4 to undergo elastic deformation and fill all potential gaps. The waterproof sealing ring 4 and the multiple sealing strips 5 form a tight waterproof structure, effectively preventing rainwater and moisture from invading the interior from the edge of the screen.

[0028] To address the heat generated during operation of the small-pitch circular display screen, this invention designs an active cooling system. A temperature-controlled fan 8 is fixedly connected to the outside of the fixed bracket 2. The upper part of the double-sided screen body 1 has an air outlet, and the lower part has an air inlet. When the internal temperature of the display screen rises to a preset value due to prolonged operation, the temperature-controlled fan 8 starts. The temperature-controlled fan 8 draws in cooler outside air from the air inlet at the lower part of the double-sided screen body 1. The cool air flows inside the screen, carrying away the heat generated by components such as the integrated circular PCBA lamp board 3 and the control module 7. The air carrying the heat rises and is finally discharged from the upper air outlet of the double-sided screen body 1, which is directly opposite the air outlet of the temperature-controlled fan 8, driven by the temperature-controlled fan 8. Through continuous air circulation, active cooling of the screen body is achieved, ensuring the stable operation of electronic components. The operation of the temperature-controlled fan 8 is also powered by the power module 6.

[0029] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An outdoor small-pitch circular display screen, comprising a double-sided screen body (1), characterized in that, A fixed bracket (2) is provided in the middle of the double-sided screen body (1), a display component is provided on the outside of the fixed bracket (2), a waterproof sealing ring (4) is provided on the inner side of the frame of the double-sided screen body (1), and multiple sealing strips (5) are provided on the outer side of the frame of the double-sided screen body (1). The display component includes an integrated circular PCBA light board (3), a power module (6), and a control module (7). The integrated circular PCBA light board (3) is located in the middle of the frame of the double-sided screen body (1). The waterproof sealing ring (4) is fitted around the outer periphery of the integrated circular PCBA light board (3). The power module (6) is located on the outside of the fixed bracket (2). The control module (7) is located on the outside of the fixed bracket (2). The integrated circular PCBA light board (3) and the control module (7) are both electrically connected to the power module (6). The integrated circular PCBA light board (3) and the control module (7) are electrically connected to each other.

2. The outdoor small-pitch circular display screen according to claim 1, characterized in that, The integrated circular PCBA light board (3) is composed of multiple LEDs, ICs and multiple electronic components mounted on a single circular PCB.

3. An outdoor small-pitch circular display screen according to claim 1, characterized in that, A temperature-controlled fan (8) is fixedly connected to the outside of the fixed bracket (2), and the temperature-controlled fan (8) is electrically connected to the power module (6).

4. An outdoor small-pitch circular display screen according to claim 1, characterized in that, The integrated circular PCBA light board (3), control module (7) and temperature control fan (8) are all powered by the power module (6).

5. An outdoor small-pitch circular display screen according to claim 1, characterized in that, The multiple sealing strips (5) are all metal parts. Multiple mounting holes are opened in the middle of the multiple sealing strips (5) and the double-sided screen body (1). The mounting holes opened in the middle of the multiple sealing strips (5) and the double-sided screen body (1) are the same size. Multiple sealing strips (5) are fixed to the outside of the frame of the double-sided screen body (1) by multiple screws.

6. An outdoor small-pitch circular display screen according to claim 1, characterized in that, The waterproof sealing ring (4) and multiple sealing strips (5) fitted around the outer periphery of the integrated circular PCBA lamp board (3) cooperate with each other to form a waterproof component.

7. An outdoor small-pitch circular display screen according to claim 1, characterized in that, The double-sided screen body (1) has an integrated circular PCBA light board (3) on both sides of its frame, and multiple sealing strips (5) are located on the outside of the integrated circular PCBA light board (3) and the waterproof sealing ring (4).

8. An outdoor small-pitch circular display screen according to claim 1, characterized in that, The diameter of the dual-sided screen body (1) is less than or equal to 700 mm, and the overall thickness of the dual-sided screen body (1) does not exceed 50 mm.

9. An outdoor small-pitch circular display screen according to claim 3, characterized in that, The upper and lower parts of the dual-sided screen body (1) are respectively provided with an air outlet and an air inlet, and the air outlet of the temperature control fan (8) is directly opposite the air outlet of the upper part of the dual-sided screen body (1).

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