LED display panel

Abstract

An LED display panel belongs to the technical field of LED display screens. The present invention comprises a panel body, a display assembly mounted on the panel body, and a plug-in panel mounted on the back of the panel body. The panel body comprises a mounting plate and a heat shield disposed at intervals, supporting ribs connecting the mounting plate and the heat shield, a heat-insulating diversion cavity formed between the mounting plate and the heat shield, and diversion and heat dissipation holes provided on opposite sides of the panel body. The display assembly comprises a PCB board, an IC control chip and an LED light disposed on opposite sides of the PCB board, with the IC control chip in close contact with the mounting plate. The present invention is lightweight, yet possesses both structural strength and heat dissipation properties, and is easily assembled to form a display screen.

Description

Technical Field

[0001] The present invention relates to the technical field of LED display screens, and in particular to an LED display panel. Background Art

[0002] LED display is an actively controllable electroluminescent device with LED as the basic light source. It can display text, graphics, images and other information through the system's control processing unit. LED display uses a low-voltage scanning drive and has the advantages of low power consumption, low cost, high brightness, large viewing angle, long viewing distance, waterproof, and a variety of specifications. It can meet the needs of various application scenarios and has a very broad development prospect. It is recognized as the LED application market with the greatest growth potential and the fastest development.

[0003] Existing large-scale indoor and outdoor LED screens, such as Chinese utility model patent No. ZL201420685738.1, disclose an LED screen cabinet and an LED screen. The LED screen includes an LED screen cabinet and a display module mounted within the LED screen cabinet. Another example is Chinese utility model patent No. ZL201921475480.1, which discloses a screen cabinet, an LED screen, and an LED screen assembly structure. The LED screen includes LED modules, a power supply box, and a screen cabinet.

[0004] As mentioned above, because existing LED screens are assembled from multiple display units, which in turn require a cabinet as a carrier, the cabinet's structural strength requirements inevitably lead to its heavy weight. Consequently, existing LED screens suffer from the following drawbacks: 1. Their weight makes them inconvenient to transport, carry, install, and maintain; 2. The smallest assembly unit is the cabinet, and the size of the entire screen can only be adjusted based on the number of cabinets. Each cabinet contains several modules, making the screen's size adjustment inflexible; and cabinet sizes are generally standardized within the industry and difficult to change; 3. Costs are higher, with production, transportation, and installation and maintenance costs all increasing due to their weight; 4. Their appearance is bulky and aesthetically pleasing.

[0005] Therefore, in order to solve the above defects, the box body is eliminated and an LED display panel that can be directly assembled to form a display screen is designed. Summary of the Invention

[0006] The purpose of the present invention is to solve the problems existing in the above-mentioned prior art and to provide an LED display panel that is light and thin, has both structural strength and heat dissipation properties, and is easy to assemble to form a display screen.

[0007] The purpose of the present invention is achieved through the following technical solutions:

[0008] An LED display panel comprises a panel body, a display assembly arranged on the panel body, and a plug-in panel arranged on the back of the panel body;

[0009] The panel body includes a mounting plate and a heat insulation plate arranged at intervals, and support ribs connecting the mounting plate and the heat insulation plate. A heat insulation guide cavity is formed between the mounting plate and the heat insulation plate. The panel body is provided with heat dissipation holes on two opposite sides.

[0010] The display assembly includes a PCB board, an IC control chip and an LED light which are arranged on two opposite sides of the PCB board, and the IC control chip is closely attached to the mounting plate.

[0011] As a preferred embodiment of the present invention, the panel body further includes two end plates integrally formed with the mounting plate and the heat insulation plate, and sealing members plugged into the other two ends of the panel body.

[0012] As a preferred embodiment of the present invention, the sealing member includes a cover and a plug connector, the plug connector has a plurality of connectors adapted to the heat-insulating guide cavity, and the guide and heat-dissipating holes are connected between each plug connector and the cover.

[0013] As a preferred embodiment of the present invention, the four side ends of the panel body all have an inclined surface structure that is wider in the front and narrower in the back, and one end of the inclined surface structure close to the front side has a splicing plane.

[0014] As a preferred embodiment of the present invention, a limiting groove is provided on the surface of the mounting plate, and a fixing piece is provided in the limiting groove.

[0015] As a preferred embodiment of the present invention, a lock and a positioning column for installation and fixation are provided on the back of the panel body.

[0016] As a preferred embodiment of the present invention, the lock includes a lock core and a push piece; one end of the lock core is rotatably connected to the mounting plate, and the other end extends from the opening on the insulation board, and a locking block is provided at the end of the lock core extending from the insulation board; a locking platform is provided on the side of the lock core, and a locking inclined surface is provided on the locking platform toward the side of the lock block, and the push piece is provided at the opening on the insulation board to cooperate with the locking inclined surface to achieve gradual locking.

[0017] As a preferred embodiment of the present invention, a fixed block is provided on the inner side of the heat insulation board to cooperate with the push piece, the fixed block is provided with a through hole for the lock core to pass through, the inner side wall of the through hole is provided with a position prompt groove, and the side of the locking platform is provided with a position prompt protrusion.

[0018] As a preferred embodiment of the present invention, the signal and power interfaces of the display component are arranged in the panel body, and a waterproof ring is provided around the signal and power interfaces in the panel body. One end of the waterproof ring extends out from the back of the panel body and is in close contact with the inner side of the plug-in panel.

[0019] As a preferred embodiment of the present invention, a signal and power plug is provided in the plug-in panel, and a signal and power common line cable is led out from the plug-in panel at the other end of the signal and power common line cable, and a signal and power common line plug is provided at the end of the signal and power common line cable.

[0020] The advantages of the present invention are:

[0021] 1. The structure of LED display panel is light and thin, which makes it easier to transport, carry, install and maintain the product;

[0022] 2. Using LED display panels as the smallest assembly unit can effectively meet the assembly requirements of display screens of different specifications, and the flexibility of use has been greatly improved;

[0023] 3. Due to the cancellation of the box structure, the overall production cost has been greatly reduced. At the same time, the weight is lighter, and the manpower and material costs required for transportation, handling, installation and maintenance have also been effectively reduced;

[0024] 4. The LED display panel itself has a thin and light structure, and has excellent heat dissipation and waterproof performance, making it suitable for use in various indoor and outdoor environments;

[0025] 5. By designing limit grooves and plastic strips, the number of openings on the LED display panel is reduced, thereby improving the efficiency of production and processing;

[0026] 6. By designing a signal and power co-linear transmission plug-in panel, the wiring structure is simplified and the stability of the circuit connection is improved;

[0027] 7. The gradual locking structure composed of the locking bevel and the push screw makes the locking operation smoother and the locking effect more stable and reliable. It is also designed with an in-place prompt structure, which ensures the stability of the locking position while making it easier for installation and maintenance personnel to grasp the locking status. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 Schematic diagram of the structure of the LED display panel in the present invention;

[0029] Figure 2 A side view of the LED display panel of the present invention;

[0030] Figure 3 It is a side view of the aluminum profile plate of the present invention;

[0031] Figure 4 Schematic diagram of the structure of the sealing member in the present invention;

[0032] Figure 5 This is a schematic diagram of the structure of the LED display panel signal and power interface in the present invention;

[0033] Figure 6 It is a structural schematic diagram of the waterproof ring in the present invention;

[0034] Figure 7 Schematic diagram of the structure of the lock in the present invention;

[0035] Figure 8 This is a schematic diagram of the structure of the lock at the side opening of the aluminum profile plate in the present invention. DETAILED DESCRIPTION

[0036] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0037] like Figure 1 and 2 As shown, an LED display panel is mainly composed of a panel body 11, a display component 12 arranged on the panel body, and a plug-in panel 13 arranged on the back of the panel body.

[0038] The panel body 11 includes an integrally formed aluminum profile plate 111 and sealing members 112 inserted into openings at both ends of the aluminum profile plate 111 .

[0039] like Figure 3 As shown, the aluminum profile plate body 111 further includes a mounting plate 1111 and a heat shield 1112 spaced apart, two end plates 1113 connecting the ends of the mounting plate 1111 and the heat shield 1112, and three support ribs 1114 connecting the interior of the mounting plate 1111 and the heat shield 1112. Furthermore, a retaining groove 1115 is provided at each end and in the middle of the mounting plate 1111. The retaining groove 1115 is used to accommodate fixings such as plastic strips, which are used to secure the display assembly 12 to the mounting plate 1111 with screws, thereby avoiding the need for additional drilling in the mounting plate. Since the mounting plate is relatively thin, direct drilling to secure the screws would result in poor stability. The retaining groove 1115 has a narrow opening and a wide interior to ensure the stability of the plastic strip within it. Avoidance grooves 1117 are also provided on both sides of the mounting plate 1111 to allow for components such as capacitors in the display assembly 12 to minimize the thickness of the entire LED display panel.

[0040] The setting of the insulation board 1112 forms an insulation guide cavity 1118 between it and the mounting plate 1111. On the one hand, the mounting plate 1111 absorbs the heat generated by the display assembly 12 and discharges it into the insulation guide cavity 1118, and efficiently dissipates heat through the convection effect formed between the multiple heat dissipation holes provided on the opposite sides of the panel body. On the other hand, when the display screen is used outdoors, the temperature of the insulation board 1112 is too high due to direct sunlight, and the insulation guide cavity 1118 effectively prevents the heat on the insulation board 1112 from directly acting on the mounting plate 1111 and the display assembly 12, that is, the convection heat dissipation effect of the insulation guide cavity 1118 is also utilized to achieve efficient heat dissipation.

[0041] The three support ribs 1114 are located in two avoidance slots 1117 and a central limiting slot 1115. This not only directly utilizes the structural strength of the avoidance slots 1117 and limiting slots 1115, but also shortens the length of the support ribs 1114 in the direction of connection between the mounting plate 1111 and the insulation board 1112, thereby increasing the structural strength of the support ribs themselves. This, in turn, improves the support strength between the mounting plate 1111 and the insulation board 1112, ensuring the stability of the distance between them and preventing deformation. Furthermore, the surface of the insulation board 1112 features four extension ribs 1119, which are extensions of the two end plates 1113 and the support ribs 1114 located in the two avoidance slots 1117. These ribs primarily serve to enhance overall structural strength and also provide positional identification for installers during installation.

[0042] like Figure 4As shown, the sealing member 112 can generally be made of plastic, which mainly serves as a seal without having to bear a supporting role. It specifically includes a cover 1121 and a plug connector 1122 that adapts to the shape of the opening at the end of the aluminum profile plate 111. Due to the presence of three support ribs 1114, the aluminum profile plate 111 is divided into four chambers, so there are four corresponding plug connectors 1122. At the same time, each plug connector 1122 is provided with a heat dissipation hole 1123 that passes through the outside of the cover 1121. Since the sealing member needs to be produced separately and is injection molded, the heat dissipation hole 1123 can be directly integrally formed on the sealing member 112, avoiding later processing and also avoiding the processing of heat dissipation holes on the aluminum profile plate 111, thereby improving production efficiency. In actual use, if the LED display panel is installed horizontally, that is, the two sealing members 112 are at the left and right ends of the same height, that is, the multiple groups of heat-guiding holes 1123 are at the left and right ends of the same height, then under the action of the external air flow, convection is formed between the heat-guiding holes at the left and right ends, and the internal air flow runs through the entire heat-insulating guide cavity 1118 to effectively dissipate heat. If the LED display panel is installed vertically, that is, the two sealing members 112 are at the upper and lower ends of the same vertical direction, that is, the multiple groups of heat-guiding holes 1123 are at the upper and lower ends of the same vertical direction, then the principle of hot air rising can be effectively utilized to form more efficient air convection between the upper and lower heat-guiding holes to achieve efficient heat dissipation, which is especially suitable for outdoor use in hot weather. In addition, in order to improve the installation stability of the sealing member 112, a fixing hole is provided on the plug connector 1122, so that the sealing member 112 and the aluminum profile plate 111 can be firmly connected by screws.

[0043] The display assembly 12 includes a PCB board, an IC control chip and an LED light arranged on opposite sides of the PCB board. The IC control chip is the main heat generating component of the display assembly, so it is directly attached to the surface of the mounting plate 1111 to take advantage of the good thermal conductivity of aluminum to quickly transfer the heat generated by the IC control chip to the mounting plate 1111, and then dissipate the heat through the heat insulation guide cavity 1118 and the heat dissipation holes 1123. Figure 5 As shown, the display assembly 12 also has a signal and power interface 124, which is set inside the panel body 11 by opening the mounting plate 1111. At the same time, a waterproof ring 125 is provided on the side of the opening to connect the mounting plate 1111 and the heat insulation plate 1112, so as to separate a waterproof cavity in the heat insulation guide cavity 1118 to meet the waterproof requirements of the signal and power interface 124. Of course, there is also an opening on the heat insulation plate 1112 to lead out the wiring. Specifically, as shown in FIG. Figure 6As shown, the waterproof ring 125 has a flange 1251 at one end for snapping into the opening on the mounting plate 1111 to ensure waterproofness at this end. A slot 1252 is provided on the side of the other end to utilize the elasticity of the waterproof ring itself to snap the edge of the opening on the insulation board 1112 into the slot 1252, thereby achieving the installation and fixation of the waterproof ring. In addition, the snap-fit ​​structure between the waterproof ring 125 and the insulation board 1112 also allows one end of the waterproof ring 125 to extend outside the insulation board 1112 to closely contact the inner side of the plug-in panel 13. This prevents water from seeping between the plug-in panel 13 and the insulation board 1112 from entering the waterproof ring 125, but instead flows downward along the outer side of the waterproof ring 125, further ensuring waterproofness.

[0044] The plug-in panel 13 is screwed onto the exterior of the opening in the heat shield 1112. A signal and power plug is installed within the plug-in panel 13. When installed on the heat shield 1112, the plug-in plug securely plugs into the signal and power interface 124 of the display assembly 12. A signal and power common-line cable 132 extends from the plug-in panel 13 at its other end. The extended end of the signal and power common-line cable 132 is equipped with a signal and power common-line plug 1321, facilitating direct connection to the signal and power common-line interface on the power control box. A sealing ring is provided at the hole in the plug-in panel 13 through which the signal and power common-line cable 132 extends, further ensuring waterproofing. Furthermore, a sealing sleeve is provided on the plug of the signal and power common-line cable 132, which is rotatably connected to the plug and has internal threads. The signal and power common-line interface on the power control box has external threads, ensuring a tight and waterproof connection between the plug and the interface. In addition, a handle 133 is provided on the plug-in panel to facilitate the installation and disassembly operations of the installation and maintenance personnel.

[0045] In addition, each of the four side ends of the LED display panel 1 has a bevel structure 101 that is wide in front and narrow in back, and a small splicing plane 102 is provided at one end of the bevel structure 101 near the front. Specifically, the two end plates 1113 of the aluminum profile plate 111 and the outer ends of the sealing member 112 have this bevel structure 101 and splicing plane 102. This design greatly reduces the contact area between adjacent LED display panels, thereby significantly reducing the impact of the flatness of the splicing surfaces between adjacent LED display panels on the flatness of the entire display screen surface. This also reduces the production requirements for LED display panels and the product defect rate. Standard parts with higher strength but a smaller number of required components ensure the flatness of the display screen surface during the assembly process of the LED display panels. Furthermore, this design also increases the gap between adjacent LED display panels, which is more conducive to heat dissipation, especially between horizontally spliced ​​LED display panels, because the heat dissipation holes 1123 are located at the horizontal splicing ends, making this heat dissipation gap essential.

[0046] To facilitate installation of the LED display panel, a lock and positioning posts 23 are provided on the back of the panel body. Each LED display panel is equipped with a positioning post 23 and two locks on both ends of the back. The positioning post 23 is located in the middle, and the two locks are located on either side of the positioning post 23. The two positioning posts mate with the positioning holes on the base mounting component to ensure the accuracy of the installation position. The locks are then locked and connected to the base mounting component to achieve stable installation.

[0047] like Figure 7 and 8 As shown, the lock includes a lock core 221, a lock core sleeve 222, a fixing block 223, and a push screw 224. Holes are provided on both the mounting plate 1111 and the heat shield 1112. The lock core 221 is inserted through the hole in the heat shield 1112 until its end fits neatly into the hole in the mounting plate 1111. Lock blocks 2211 are provided on opposite sides of one end of the lock core 221. The distance between the opposing ends of the two lock blocks 2211 is greater than the width of the opening of the lock slot 2121. This means that only a limiting groove needs to be provided on the reference mounting component. When the lock core 221 is rotated so that the two lock blocks 2211 are aligned in the width direction of the groove, the two lock blocks 2211 are retained within the groove. When the two lock blocks 2211 are rotated so that they are aligned in the length direction of the groove, the lock blocks 2211 and the lock core 221 can be withdrawn from the groove.

[0048] An annular locking platform 2212 is provided on the central side of the lock core 221. This platform 2212 is provided with a locking bevel 2213 on one side facing the lock block 2211. There are two identical locking bevels 2213, with the lower portion of one connecting to the higher portion of the other, and both connections are provided with a stop 2214. Accordingly, two push screws 224 are fastened to the outer surface of the heat shield 1112 via a fixing block 223 located on the inner surface of the heat shield 1112. The two push screws 224 are located on opposite sides of the lock core 221. The screw heads of the two push screws 224 need to partially protrude from the edge of the opening in the heat shield 1112 to engage with the locking bevels 2213. Of course, the fixing block 223 also has a through hole for the lock core 221 to pass through; and one end of the fixing block 223 is precisely stuck between the outer bottom surface of the avoidance groove 1117 and the inner surface of the heat insulation board 1112, thereby providing auxiliary support for the fixing block before the push screw is tightened. When the lock core rotates, due to the push of the locking bevel 2213 and the push screw 224, the lock core 221 will gradually move toward the front of the LED display panel, thereby causing the two locking blocks 2211 to gradually press against the base mounting component, achieving a locked connection between the LED display panel 1 and the base mounting component. In addition, the sides of the two limit platforms 2214 are provided with an in-position prompt protrusion 2215, and the inner side wall of the through hole of the fixed block 223 is provided with an in-position prompt groove 2232. On the one hand, it is used to locate the locking position of the lock cylinder to prevent loosening; on the other hand, it allows the operator to understand the rotation of the lock cylinder into position by sensing the vibration or sound when the in-position prompt protrusion 2215 is locked into the in-position prompt groove 2232 when the operator cannot see the inside of the lock.

[0049] A lock sleeve 222 is mounted over the portion of the lock core 221 within the LED display panel 1. Specifically, the lock sleeve 222 is positioned between the end of the locking platform 2212 facing away from the locking bevel 2213 and the inner side of the mounting plate 1111, limiting the distance the lock core 221 can move toward the front of the LED display panel 1. Furthermore, the two opposing sides of the lock sleeve 222 are flat, and after installation, one of the flat surfaces rests against the outer wall of the avoidance groove 1117, limiting the rotation of the lock sleeve 222 and ensuring its stability. Finally, hexagonal holes are located at both the front and rear ends of the lock core 221, respectively, for front and rear maintenance. Accordingly, holes for a hexagonal wrench are required on both the PCB 121 and the reference mounting component.

[0050] In summary, the assembly principle of this LED display panel is as follows:

[0051] The display assembly 12 is mainly fixed to the panel body 11 by screws, which will not be described in detail. When installing the lock, since the installation position of the lock is close to the side end of the panel, before installing the sealing member 112, the fixing block 223 can be inserted from the opening at the side end of the aluminum profile plate 111, and one end of it can be stuck between the outer bottom surface of the avoidance groove 1117 and the inner surface of the heat insulation board 1112. The screw holes on the fixing block 223 are aligned with the screw holes on the heat insulation board 1112 by adjustment. Then, the lock core 221 with the lock core sleeve 222 is inserted from the opening on the heat insulation board 1112, through the through hole on the fixing block 223, until the end of the lock core 221 is inserted into the hole on the mounting plate 1111. Then, two push screws 224 are passed through the screw holes on the heat insulation board 1112 and fastened to the fixing block 223. At this point, one end of the lock core 221 is secured by the lock core sleeve 222, and the other end by two push screws 224. This means the lock core 221 is securely mounted on the LED display panel. The four locks are installed sequentially, and the positioning posts 23, with their threads on the ends, connect directly to the threaded holes in the panel body. Finally, the sealing members 112 are inserted into the ends of the aluminum profile plate 111 and secured with screws. The plug-in panel 13 is then screwed into the back opening of the panel body, completing the assembly of the single LED display panel.

[0052] The above description is merely a preferred embodiment of the present invention, which is one implementation method based on the overall concept of the present invention. The scope of protection of the present invention is not limited to this embodiment. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in the present invention should be included in the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be based on the scope of protection of the claims.

Claims

1. An LED display panel, characterized in that: It includes a panel body, a display component arranged on the panel body, and a plug-in panel arranged on the back of the panel body; The panel body includes a mounting plate and a heat insulation plate arranged at intervals, and support ribs connecting the mounting plate and the heat insulation plate. A heat insulation guide cavity is formed between the mounting plate and the heat insulation plate. The panel body is provided with heat dissipation holes on two opposite sides. The display assembly includes a PCB board, an IC control chip and an LED light respectively arranged on two opposite sides of the PCB board, and the IC control chip is closely attached to the mounting plate; A limiting groove is provided on the surface of the mounting plate, and a fixing piece is provided in the limiting groove; The back of the panel body is provided with a lock and a positioning column for installation and fixation, and the lock includes a lock core and a push piece; one end of the lock core is rotatably connected to the mounting plate, and the other end extends from the opening on the insulation board, and a locking block is provided at the end of the lock core extending from the insulation board; a locking platform is provided on the side of the lock core, and a locking inclined surface facing the lock block is provided on the locking platform, and the push piece is provided at the opening on the insulation board to cooperate with the locking inclined surface to achieve gradual locking.

2. The LED display panel according to claim 1, wherein: The panel body also includes two end plates integrally formed with the mounting plate and the heat insulation plate, and sealing members plugged into the other two ends of the panel body.

3. The LED display panel according to claim 2, characterized in that: The sealing member includes a cover and a plug connector. The plug connector has multiple connectors adapted to the heat-insulating guide cavity. A guide and heat-dissipating hole is provided between each plug connector and the cover.

4. The LED display panel according to claim 1, characterized in that: The four side ends of the panel body all have an inclined surface structure that is wide at the front and narrow at the back, and one end of the inclined surface structure close to the front side has a splicing plane.

5. The LED display panel according to claim 1, characterized in that: A fixing block is provided on the inner side surface of the heat insulation board to cooperate with the push piece, and a through hole is provided on the fixing block for the lock core to pass through. A position prompt groove is provided on the inner side wall of the through hole, and a position prompt protrusion is provided on the side surface of the locking platform.

6. The LED display panel according to claim 1, characterized in that: The signal and power interface of the display component is arranged in the panel body. A waterproof ring is provided around the signal and power interface in the panel body. One end of the waterproof ring extends out from the back of the panel body and is in close contact with the inner side of the plug-in panel.

7. The LED display panel according to claim 1, characterized in that: A signal and power plug is provided in the plug-in panel, and a signal and power common line cable is led out from the plug-in panel at the other end of the signal and power common line cable, and a signal and power common line plug is provided at the end of the signal and power common line cable.

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