A sub-pixel packaging structure of a COB micro-pitch LED display

Abstract

The present invention relates to the field of LED display screen packaging, and in particular to a COB micro-pitch LED display screen sub-pixel packaging structure, comprising a main frame and a protection frame, wherein a plurality of horizontal plates and vertical plates which are staggered in horizontal and vertical directions are arranged in the main frame, an area between the horizontal plates and the vertical plates forms an installation cavity, and a plurality of protection frames are located in the corresponding installation cavities, a rectangular frame is connected to an opening of the protection frame, an LED panel is installed in the rectangular frame, a protection plate of a transparent material is installed on one side of the rectangular frame, and a sealing unit is arranged on the lower side of the rectangular frame, and all-round sealing protection of an LED module is realized by the protection frame and the sealing strip, and dust, moisture and other pollutants are effectively prevented from entering, thereby improving the stability and service life of the LED module; in addition, by filling the protection frame with inert gas, oxidation and corrosion of the LED module are further prevented, and its service life is extended.

Description

Technical Field

[0001] The invention relates to the field of LED display screen packaging, and in particular to a COB micro-pitch LED display screen sub-pixel packaging structure. Background Art

[0002] The sub-pixel packaging structure of the COB micro-pitch LED display is a technology that directly packages red, green and blue LED chips on a printed circuit board to form a high-density pixel unit; this structure has high resolution, high brightness and excellent heat dissipation performance, and is suitable for making high-definition display screens; through multi-module array assembly, multiple COBLED modules can be combined into a larger display screen and installed in outdoor environments to display various content.

[0003] The existing LED module structure is that the panel and the frame are connected, and a sealing strip is installed in the gap between the screen and the frame to fill the gap between the panel and the frame to prevent rain or dust from entering between the screen and the frame.

[0004] However, the existing internal sealing structure of the screen module has certain defects: due to long-term exposure to outdoor environment, the performance of the sealing strip may gradually decline, causing moisture, dust and other contaminants to enter the module, affecting the stability and life of the display; in addition, since people cannot intuitively judge whether the sealing performance has failed, it can only be known when water enters the LED module and is damaged, which increases the difficulty of maintenance and the risk of potential failure.

[0005] Moreover, when the LED screen is damaged and cannot be repaired, since the LED panel frame is fixedly connected and cannot be separated, the entire LED module needs to be scrapped, which is wasteful and costly.

[0006] Existing outdoor LED large screens usually require LED modules to be installed in a main frame, and multiple LED modules are used to form a large screen.

[0007] However, when multiple LED modules are spliced ​​together, it is difficult to effectively ensure the sealing between the modules. Poor sealing at the joints may cause moisture to penetrate, further affecting the display effect and service life of the entire large screen. In addition, the existing LED modules lack a quick-release structure when installed or removed from the main frame, making maintenance more difficult. Therefore, special attention should be paid to the sealing performance inside the module and between modules during the design and manufacturing process, and more reliable sealing materials and processes should be used to ensure the long-term stable operation of the COB micro-pitch LED display in outdoor environments.

[0008] Therefore, based on the above-stated viewpoints, there is still room for improvement in the existing LED display packaging structure. Summary of the invention

[0009] In order to solve the above problems, the present invention provides a sub-pixel packaging structure of a COB micro-pitch LED display screen, including a main frame and a protective frame, wherein a plurality of horizontal plates and vertical plates which are staggered horizontally and vertically are arranged in the main frame, and the area between the horizontal plates and the vertical plates is formed as an installation cavity, and a plurality of protective frames are located in the corresponding installation cavity, and a rectangular frame is connected to the opening of the protective frame, and an LED panel is installed in the rectangular frame, and a protective plate made of a transparent material is installed on one side of the rectangular frame.

[0010] A sealing unit for disassembling and sealing the LED panel is arranged at the lower side of the rectangular frame.

[0011] The sealing unit comprises a mounting groove at the bottom of the rectangular frame, and the bottom of the LED panel is located in the mounting groove. The bottom of the rectangular frame is also provided with a sealing groove intersecting the mounting groove, and an annular plate is slidably inserted in the sealing groove.

[0012] Preferably, the LED panel is slidably connected to the inner wall of the rectangular frame, an annular groove 1 is provided on the inner wall of the sealing groove, a rubber ring 1 located in the annular groove 1 is arranged on the outer side of the annular plate, an annular groove 2 is provided on the outer side of the LED panel located in the sealing groove, and a rubber ring 2 located in the annular groove 2 is arranged on the inner diameter of the annular plate.

[0013] Preferably, the first rubber ring and the second rubber ring are both made of heat-expandable rubber material, and are respectively attached to the corresponding first annular groove and the second annular groove.

[0014] Preferably, threaded rods are provided on both sides of the annular plate in a threaded connection manner, and a hexagonal groove is provided on one side of the threaded rod.

[0015] Preferably, a conductive component for providing electrical signals to the LED panel is provided on one side of the rectangular frame, and the conductive component includes a conductive plate provided on one side of the protective frame, and one side of the conductive plate passes through the outer wall of the protective frame and is provided with a rectangular plate inside the protective frame, and several partition plates are provided on the rectangular plate, and symmetrically distributed card plates are provided between adjacent partition plates.

[0016] Preferably, a sliding groove is symmetrically provided on one side of the LED panel facing the card-connecting piece, a contact plate is slidably arranged in the sliding groove, and a push spring is arranged between the contact plate and the inner wall of the sliding groove.

[0017] Preferably, the contact plates are respectively located between the two corresponding card plates and are slidably connected thereto.

[0018] Preferably, heat dissipation components for dissipating heat from the LED panel are also provided on both sides of the rectangular plate, and the heat dissipation components include heat conducting plates provided on both sides of the rectangular plate, and one side of the heat conducting plate is in contact with the back of the LED panel.

[0019] Preferably, a heat sink is provided on a side of the heat conducting plate facing away from the LED panel, and one side of the heat sink passes through an outer wall of the protection frame and is located in the installation cavity.

[0020] Preferably, the heat conducting plate is provided with a plurality of guide grooves distributed along its extension section, the upper and lower ends of the main frame are provided with circular grooves, and the transverse plate and the longitudinal plate are also provided with through grooves.

[0021] In summary, the present application includes at least one of the following beneficial technical effects:

[0022] 1. The present invention realizes all-round sealing protection of the LED module by setting a protective frame and a sealing strip, effectively preventing dust, moisture and other pollutants from entering, thereby improving the stability and service life of the LED module; wherein, the protective frame provides physical protection for the LED module to prevent external impact and damage, and the sealing strip forms a sealing barrier at the opening of the protective frame to ensure the cleanliness and dryness of the internal environment of the LED module. In addition, by filling the protective frame with inert gas, the oxidation and corrosion of the LED module are further prevented, thereby extending its service life.

[0023] 2. The present invention realizes real-time monitoring of the air pressure value of the inert gas in the protection frame by setting an air pressure sensor and a one-way valve, promptly discovers the aging problem of the sealing strip, and avoids the risk of water damage to the LED panel due to sealing failure: the air pressure sensor can monitor the air pressure changes in the protection frame in real time and promptly discover the aging or damage of the sealing strip, while the one-way valve allows one-way flow of the inert gas to prevent external air from entering.

[0024] 3. The present invention realizes the rapid disassembly and installation of LED modules by setting up the installation unit, improves the maintenance efficiency and reduces the maintenance cost. At the same time, through the support and installation of the main frame, multiple LED modules can be composed of a large screen, which further improves the applicability of the present invention; the sealing unit allows the LED module to be quickly disassembled and replaced when necessary, reducing the maintenance time and workload; the installation unit realizes the rapid installation and disassembly of the protective frame in the installation cavity through the cooperation of the snap-fit ​​gear and the electric push rod. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0026] Figure 1 It is a main schematic diagram of the present invention.

[0027] Figure 2 It is a schematic structural diagram of the transverse plate and the longitudinal plate of the present invention.

[0028] Figure 3 It is a schematic diagram of the cross-sectional structure of the protection frame and the rectangular frame of the present invention.

[0029] Figure 4 It is a structural schematic diagram of the sealing unit of the present invention.

[0030] Figure 5 The present invention Figure 4 A partial enlarged view of the structure at point A.

[0031] Figure 6 The present invention Figure 4 A magnified view of part of the structure at point B.

[0032] Figure 7 It is a schematic diagram of the structure of the conductive component and the heat dissipation component of the present invention.

[0033] Figure 8 The present invention Figure 7 A magnified view of part of the structure at point C in the middle.

[0034] Fig. 9 It is a structural schematic diagram of the conductive component and the heat dissipation component of the present invention from another perspective.

[0035] Fig.10 It is a schematic structural diagram of the circular groove and the through groove of the present invention.

[0036] Fig.11 It is a structural schematic diagram of the installation unit of the present invention.

[0037] Fig.12 The present invention Fig.11 A magnified view of part of the structure at D in the middle.

[0038] Fig.13 It is a cross-sectional structural diagram of the installation unit of the present invention from another viewing angle.

[0039] Fig.14 The present invention Fig.13 Enlarged view of part of the structure at E in the middle.

[0040] Fig.15 It is a schematic diagram of the structure of the construction groove and the sealing ring of the present invention.

[0041] Fig.16 The present invention Fig.15 A magnified view of part of the structure at F in the middle.

[0042] In the figure, 1, main frame; 10, horizontal plate; 11, vertical plate; 12, protection frame; 13, installation cavity; 14, rectangular frame; 15, LED panel; 16, protection plate; 2, sealing unit; 20, installation groove; 21, annular plate; 22, rubber ring 1; 23, rubber ring 2; 24, threaded rod; 25, hexagonal groove; 3, conductive component; 30, conductive plate; 31, rectangular plate; 32, partition plate; 33, card plate ; 34. Sliding groove; 35. Contact plate; 36. Push spring; 4. Heat dissipation assembly; 40. Heat conduction plate; 41. Heat dissipation plate; 42. Guide groove; 43. Circular groove; 44. Through groove; 5. One-way valve; 6. Mounting unit; 60. Snap-on key; 61. Support plate; 62. Snap-on gear; 63. Sliding groove; 64. Limiting plate; 65. Snap-on block; 66. Electric push rod; 67. Structural groove; 68. Sealing ring. DETAILED DESCRIPTION

[0043] The following combination Figures 1 to 16 Embodiments of the present invention are described in detail.

[0044] The embodiment of the present application discloses a sub-pixel packaging structure of a COB micro-pitch LED display screen, which explains that the present application is mainly used in the process of sealing and protecting LED modules. In terms of technical effect, the LED modules can be protected by a protection frame, and a sealing strip is added at the opening of the protection frame to achieve sealing. The LED modules can also be anti-corrosion treated by filling inert gas inside the protection frame. The air pressure value of the inert gas in the protection frame can be detected in real time by a sensor to determine whether the sealing strip needs to be replaced to prevent the LED panel from being damaged by water ingress. The present application can also support and install multiple LED modules by providing a main frame, so that multiple LED modules can form a large screen, and the LED modules can be quickly disassembled through a quick-release structure, further improving the applicability of the present invention.

[0045] Example 1: Reference Figure 1 , Figure 2 and Figure 3 As shown, it includes a main frame 1, a horizontal plate 10, a vertical plate 11, a protective frame 12, an installation cavity 13, a rectangular frame 14, an LED panel 15, a protective plate 16 and a sealing unit 2, several protective frames 12 are distributed in the main frame 1 in a rectangular shape, and several horizontal and vertical staggered horizontal and vertical plates 10 and vertical plates 11 are arranged in the main frame 1, the area between the horizontal plate 10 and the vertical plate 11 forms an installation cavity 13, and several protective frames 12 are located in the corresponding installation cavity 13, that is, when installing the protective frame 12, align the protective frame 12 with the installation cavity 13, and then install the protective frame 12 in the installation cavity 13.

[0046] A rectangular frame 14 is connected to the opening of the protection frame 12, and an LED panel 15 is installed in the rectangular frame 14. A protective plate 16 made of transparent material is installed on one side of the rectangular frame 14. The picture displayed by the LED panel 15 can be seen through the protective plate 16, so that the human eye can see the content displayed on the LED panel 15 through the protective plate 16, and the protective plate 16 can isolate the LED panel 15 from the outside world.

[0047] A sealing unit 2 for disassembling and sealing the LED panel 15 is provided on the lower side of the rectangular frame 14. That is, when the LED panel 15 needs to be replaced, the LED panel 15 can be taken out of the rectangular frame 14 through the sealing unit 2, and then the new LED panel 15 can be put back. The sealing unit 2 cooperates with the protective frame 12, the rectangular frame 14 and the protective plate 16 to seal and protect the LED panel 15.

[0048] Reference Figure 4 , Figure 5 and Figure 6 As shown, a sealing unit 2 is provided for disassembling and sealing the LED panel 15; specifically, the sealing unit 2 includes a mounting groove 20, an annular plate 21, a rubber ring 1 22, a rubber ring 23, a threaded rod 24 and a hexagonal groove 25. The mounting groove 20 is provided at the bottom of the rectangular frame 14, and the bottom of the LED panel 15 is located in the mounting groove 20. A sealing groove which is connected with the mounting groove 20 is also provided at the bottom of the rectangular frame 14, and an annular plate 21 is slidably inserted in the sealing groove.

[0049] The LED panel 15 is slidably connected to the inner wall of the rectangular frame 14, that is, the LED panel 15 can be inserted into the rectangular frame 14 from the installation groove 20, and similarly, can be taken out of the rectangular frame 14 through the installation groove 20; an annular groove 1 is provided on the inner wall of the sealing groove, and a rubber ring 1 22 located in the annular groove 1 is provided on the outer side of the annular plate 21; an annular groove 2 is provided on the outer side of the sealing groove of the LED panel 15, and a rubber ring 2 23 located in the annular groove 2 is provided on the inner diameter of the annular plate 21; both the rubber ring 1 22 and the rubber ring 2 23 are made of rubber and are respectively tightly attached to the corresponding annular groove 1 and annular groove 2.

[0050] When installing the LED panel 15, first set the annular ring on the bottom of the LED panel 15, so that the rubber ring 23 on the inner diameter of the annular plate 21 is inserted into the annular groove 2, and then insert the LED panel 15 into the rectangular frame 14 through the installation groove 20. At this time, the rubber ring 1 22 outside the annular plate 21 will also enter the annular groove 1, and the rubber ring 1 22 and the annular groove 2 seal the gap between the annular plate 21 and the sealing groove. At the same time, the annular plate 21 is limited to the installation groove 20, and the rubber ring 23 and the annular groove 2 cooperate to seal the LED panel 15 and the annular plate 2 1, and the LED panel 15 is limited by the annular plate 21 to prevent the LED panel 15 from being separated from the rectangular frame 14. When the LED panel 15 is working, the body will generate heat, and the generated heat will be transferred to the corresponding rubber ring 1 22 and the rubber ring 2 23, so that the rubber ring 1 22 and the rubber ring 2 23 are preheated and expanded, so as to more fully fill and seal the gap. Because the rubber ring 1 22 and the rubber ring 2 23 are made of heat-expanding rubber material, this material remains stable at room temperature, so it will expand rapidly when heated.

[0051] Threaded rods 24 are also provided on both sides of the annular plate 21 in a threaded connection manner, and a hexagonal groove 25 is provided on one side of the threaded rod 24. When disassembling the LED panel 15, the annular plate 21 must be removed first. At this time, a screwdriver is inserted into the hexagonal groove 25, and the threaded rod 24 is rotated to move the threaded rod 24 out of the annular plate 21. Then, the annular plate 21 is moved out of the sealing groove through the threaded rod 24 by pliers or other clamping devices, and the rubber ring 22 is simultaneously separated from the corresponding annular groove 1, so that the staff can disassemble it more quickly.

[0052] Reference Figure 7 , Figure 8 and Fig. 9 As shown, a conductive component 3 for providing an electrical signal to the LED panel 15 is provided on one side of the rectangular frame 14; specifically, the conductive component 3 includes a conductive plate 30, a rectangular plate 31, a partition plate 32, a snap-on piece 33, a sliding groove 34, a contact plate 35 and a push spring 36, and the conductive plate 30 is provided on one side of the protective frame 12, and one side of the conductive plate 30 passes through the outer wall of the protective frame 12 and is located in the protective frame 12 and is provided with a rectangular plate 31, and a plurality of partition plates 32 are provided on the rectangular plate 31, and symmetrically distributed snap-on pieces 33 are provided between adjacent partition plates 32.

[0053] The LED panel 15 is symmetrically provided with a sliding groove 34 on one side facing the card plate 33. A contact plate 35 is slidably arranged in the sliding groove 34. A push spring 36 is arranged between the contact plate 35 and the inner wall of the sliding groove 34. The contact plate 35 can slide back and forth in the corresponding sliding groove 34. The push spring 36 always pushes the corresponding contact plate 35 to be located outside the sliding groove 34 in the initial state.

[0054] The contact plates 35 are respectively located between the two corresponding clamping pieces 33 and are slidably connected thereto.

[0055] After the LED panel 15 is inserted into the mounting groove 20, the arc surface at the top of the contact plate 35 will contact the mounting groove 20 and be pushed into the sliding groove 34, so that the LED panel 15 can be smoothly inserted into the sliding groove 34. Then, when the LED panel 15 moves into the rectangular frame 14, the contact plate 35 can be pushed by the corresponding push spring 36 and inserted into the corresponding two card plates 33 without the interference of the mounting groove 20. After the entire protective frame 12 is installed in the mounting cavity 13, a conductive device (a well-known technology, used to transmit electrical signals to the conductive plate 30 and ultimately control the LED panel 15) is installed on the inner wall of the mounting cavity 13. The conductive plate 30 contacts the conductive device, and the conductive device can transmit the electrical signal to the conductive plate 30. Then, the electrical signal is transmitted from the conductive plate 30, the rectangular plate 31, the partition plate 32, the card plate 33, the contact plate 35 and the sliding groove 34 to the LED panel 15, so that the LED panel 15 can receive the electrical signal to work.

[0056] When the LED panel 15 is removed from the rectangular frame 14, similarly, the contact plate 35 will be separated from the corresponding card plate 33. At this time, the LED panel 15 is powered off. Then the arc surface at the bottom of the contact plate 35 will contact the inner bottom wall of the rectangular frame 14 and be pushed into the sliding groove 34, so that the LED panel 15 can be smoothly removed from the rectangular frame 14. Then the contact plate 35 will no longer be pushed and move out of the sliding groove 34.

[0057] Continue to refer to Figure 7 , Fig. 9 and Fig.10 As shown, heat dissipation components 4 for dissipating heat from the LED panel 15 are also provided on both sides of the rectangular plate 31; specifically, the heat dissipation component 4 includes a heat conducting plate 40, a heat dissipation plate 41, a guide groove 42, a circular groove 43 and a through groove 44. The heat conducting plate 40 is provided on both sides of the rectangular plate 31, and one side of the heat conducting plate 40 is in contact with the back side of the LED panel 15, that is, the heat generated by the LED panel 15 during operation will be transferred to the heat conducting plate 40.

[0058] A heat dissipation plate 41 is disposed on a side of the heat conducting plate 40 facing away from the LED panel 15 , and one side of the heat dissipation plate 41 passes through an outer wall of the protection frame 12 and is located in the installation cavity 13 .

[0059] The heat conducting plate 40 is provided with several guide grooves 42 distributed along its extended section, circular grooves 43 are provided at the upper and lower ends of the main frame 1, and through grooves 44 are also provided on the horizontal plate 10 and the vertical plate 11. The heat on the heat conducting plate 40 will be transferred to the heat sink 41, and the air inlet pipe and the air collecting pipe of the external circulation gas supply equipment (a well-known technology, the purpose of which is to supply gas and circulate gas into the main frame 1) are respectively connected to the two circular grooves 43. The gas enters from the circular groove 43 on one side and then flows into each installation cavity 13 from the through groove 44. The flowing gas can take away the heat on the heat sink 41. At the same time, the guide grooves 42 are used to increase the contact area between the heat conducting plate 40 and the gas, thereby improving the heat dissipation efficiency. Finally, the gas carrying the heat flows from the circular groove 43 on the other side into the external circulation gas supply equipment for cooling.

[0060] Example 2: Continue to refer to Figure 3 As shown, on the basis of Example 1, in order to be able to promptly discover the problem of insufficient airtightness caused by aging of rubber ring 1 22 and rubber ring 23, a one-way valve 5 is provided on one side of the protection frame 12, and the opening order of the one-way valve 5 is from outside to inside. Therefore, in actual use, after the LED panel 15 and the annular plate 21 are installed in place, inert gas is filled into the protection frame 12 and the rectangular frame 14 through the one-way valve 5 to prevent oxidation of the panel of the LED module and extend its service life. An air pressure sensor is installed in the protection frame 12. If the rubber ring 1 22 and the rubber ring 23 are aged, the inert gas will flow out of the protection frame 12 and the rectangular frame 14 through the corresponding annular groove 1 and annular groove 2. That is, the air pressure sensor will detect insufficient pressure at this time, reminding personnel to replace the rubber ring 1 22 and the rubber ring 23.

[0061] Example 3: Reference Fig.11 , Fig.12 , Fig.13 , Fig.14 , Fig.15 and Fig.16As shown, on the basis of the first and second embodiments, in order to realize the rapid disassembly of the protection frame 12 in the installation cavity 13, an installation unit 6 is provided in the installation cavity 13; specifically, the installation unit 6 includes a snap-on key 60, a support plate 61, a snap-on gear 62, a sliding groove 63, a limit plate 64, a snap-on block 65, an electric push rod 66, a structural groove 67 and a sealing ring 68, the snap-on key 60 is provided on one side of the protection frame 12 of the conductive plate 30, and the inner wall of the installation cavity 13 is symmetrically provided with a support plate 61, a support A locking gear 62 is arranged between the plates 61 for common rotation, and one side of the conductive plate 30 is meshed with the locking gear 62 through the locking key 60. A sliding groove 63 is also provided on the opposite side of the support plate 61. A limit plate 64 is slidably arranged between the sliding grooves 63. A locking block 65 meshing with the locking gear 62 is arranged on the side of the limit plate 64 facing the locking gear 62, and one side of the locking block 65 is an arc-shaped surface, which contacts the teeth of the locking gear 62. An electric push rod 66 is arranged between the limit plate 64 and the inner wall of the sliding groove 63.

[0062] That is, in actual use, after the protection frame 12 is installed in the installation cavity 13, the conductive plate 30 can mesh with the clamping gear 62 through the clamping key 60, and drive the clamping gear 62 to rotate. Since the rotation direction of the clamping gear 62 corresponds to the arc surface of the clamping block 65 at this time, the limit plate 64 can be indirectly driven to move in the sliding groove 63 in the direction away from the clamping gear 62 through the arc surface, and the telescopic end of the electric push rod 66 is synchronously retracted, that is, at this time, the clamping gear 62 can be The protective frame 12 is rotated. When the protective frame 12 is inserted, the protective frame 12 is no longer pushed and the locking block 65 will re-engage with the locking gear 62. Since the other side of the locking block 65 is a plane, that is, the locking gear 62 will contact and get stuck with the plane of the locking block 65 when rotating in the reverse direction, the locking block 65 can limit the reverse rotation of the locking gear 62, that is, the locking gear 62 can indirectly limit the protective frame 12 through the locking key 60 to prevent the protective frame 12 from leaving the installation cavity 13.

[0063] When the protective frame 12 is to be removed from the mounting cavity 13 , the electric push rod 66 is used to drive the corresponding limiting plate 64 to move in the sliding groove 63 , and the mounting groove 20 is no longer limited by the clamping block 65 . The clamping gear 62 can rotate in the opposite direction, so that the protective frame 12 can be taken out of the mounting cavity 13 .

[0064] That is, during installation, the conductive plate 30 drives the locking gear 62 to rotate in the forward direction through the locking key 60. At this time, the locking gear 62 can drive the limit plate 64 to move in the opposite direction through the arc surface on one side of the locking block 65. That is, at this time, the electric push rod 66 does not need to be started. The electric push rod 66 only needs to be started when the locking gear 62 rotates in the reverse direction, so as to reduce the frequency of use of the electric push rod 66 and reduce the probability of its failure.

[0065] Several structural grooves 67 corresponding to the rectangular frame 14 are provided on the horizontal plate 10 and the vertical plate 11, and a sealing ring 68 made of elastic material is arranged in the structural groove 67. The sealing ring 68 is in contact with the back of the rectangular frame 14. That is, after the protective frame 12 is installed in the installation cavity 13, its back can be in contact with the sealing ring 68. The contact gap between it and the horizontal plate 10 and the vertical plate 11 is blocked by the sealing ring 68 to prevent rainwater and foreign matter from entering the main frame 1.

[0066] When working:

[0067] The first step is to install the protective frame 12: align the protective frame 12 with the position of the installation cavity 13 to ensure that the protective frame 12 can be smoothly inserted into the installation cavity 13; push the protective frame 12 to make it completely consistent with the installation cavity 13; at this time, the conductive plate 30 on one side of the protective frame 12 is engaged with the snap-in gear 62 in the installation cavity 13 through the snap-in key 60, driving the snap-in gear 62 to rotate forward.

[0068] The second step is to limit the protection frame 12 : when the protection frame 12 is installed, the conductive plate 30 drives the engaging gear 62 to rotate forward through the engaging key 60 , so that the protection frame 12 can enter the installation cavity 13 .

[0069] When the protection frame 12 is no longer pushed, since the other side of the clamping block 65 is a plane, the clamping gear 62 will contact the plane of the clamping block 65 and get stuck when rotating in the reverse direction, thereby limiting the protection frame 12 and preventing it from leaving the installation cavity 13.

[0070] The third step is to seal the protection frame 12: After the protection frame 12 is installed in place, its back side contacts the sealing ring 68 in the structural groove 67 on the horizontal plate 10 and the vertical plate 11, and the sealing ring 68 contacts the back side of the rectangular frame 14. The sealing ring 68 seals the contact gap between the protection frame 12 and the horizontal plate 10 and the vertical plate 11 to prevent rainwater and foreign matter from entering the main frame 1.

[0071] The fourth step is to install the LED panel 15: insert the LED panel 15 into the rectangular frame 14 through the installation groove 20. During the insertion process, the rubber ring 23 on the inner diameter of the annular plate 21 is inserted into the annular groove 2, and the rubber ring 1 22 outside the annular plate 21 enters the annular groove 1; the rubber ring 1 22 and the annular groove 1 seal the gap between the annular plate 21 and the installation groove 20, and at the same time limit the annular plate 21 to the installation groove 20, the rubber ring 23 and the annular groove 2 cooperate to seal the gap between the LED panel 15 and the inner diameter of the annular plate 21, and limit the LED panel 15 through the annular plate 21.

[0072] The fifth step is sealing and heat dissipation: the LED panel 15 generates heat when working, and the heat is transferred to the rubber ring 1 22 and the rubber ring 2 23, so that they are preheated and expanded, and the gap is more fully filled and sealed; the heat conducting plates 40 on both sides of the rectangular plate 31 are in contact with the back of the LED panel 15, and the heat is transferred to the heat dissipation plate 41; the external circulation air supply equipment is connected to the circular groove 43 through the air inlet pipe and the air collecting pipe, and the gas flow takes away the heat from the heat dissipation plate 41, and increases the contact area between the heat conducting plate 40 and the gas through the guide groove 42, thereby improving the heat dissipation efficiency.

[0073] Step 6, power supply and signal transmission: the contact plate 35 in the conductive component 3 slides in the sliding groove 34 and is slidably connected with the card plate 33; when the LED panel 15 is inserted into the rectangular frame 14, the contact plate 35 is pushed by the push spring 36 and inserted into the corresponding two card plates 33 to realize the transmission of electrical signals; the conductive plate 30 contacts the conductive device on the inner wall of the installation cavity 13, and the conductive device transmits the electrical signal to the conductive plate 30, and then transmits it to the LED panel 15 through the conductive plate 30, the rectangular plate 31, the partition plate 32, the card plate 33, the contact plate 35 and the sliding groove 34, so that it can work normally.

[0074] When disassembling:

[0075] The first step is to cut off the power supply: when the LED panel 15 is disassembled, the contact plate 35 will be separated from the corresponding card plate 33, and the LED panel 15 will be cut off from the power supply.

[0076] The second step is to disassemble the LED panel 15: insert a screwdriver into the hexagonal slot 25, and rotate the threaded rod 24 to move it out of the annular plate 21; use pliers or other clamping equipment to move the annular plate 21 out of the mounting groove 20 through the threaded rod 24, and simultaneously disengage the rubber ring 22 from the corresponding annular groove 1.

[0077] The third step is to disassemble the protection frame 12: drive the electric push rod 66 to drive the limiting plate 64 to move in the sliding groove 63, and no longer limit the installation groove 20 through the clamping block 65; the clamping gear 62 can rotate in the opposite direction, so that the protection frame 12 can be taken out from the installation cavity 13.

[0078] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be considered as exemplary and non-restrictive in all respects.

[0079] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A COB fine pitch LED display sub-pixel packaging structure, comprising a main frame (1) and a protection frame (12), characterized in that: A plurality of horizontal plates (10) and vertical plates (11) are arranged in a staggered manner in a horizontal and vertical direction in the main frame (1), the area between the horizontal plates (10) and the vertical plates (11) forms an installation cavity (13), and a plurality of protection frames (12) are located in the corresponding installation cavity (13), a rectangular frame (14) is connected to the opening of the protection frame (12), an LED panel (15) is installed in the rectangular frame (14), and a protective plate (16) made of a transparent material is installed on one side of the rectangular frame (14); A sealing unit (2) for disassembling and sealing the LED panel (15) is provided at the lower side of the rectangular frame (14); The sealing unit (2) comprises a mounting groove (20) provided at the bottom of the rectangular frame (14), and the bottom of the LED panel (15) is located in the mounting groove (20). The bottom of the rectangular frame (14) is also provided with a sealing groove which is in communication with the mounting groove (20), and an annular plate (21) is slidably inserted in the sealing groove. The LED panel (15) is slidably connected to the inner wall of the rectangular frame (14); an annular groove 1 is provided on the inner wall of the sealing groove; a rubber ring 1 (22) located in the annular groove 1 is provided on the outer side of the annular plate (21); an annular groove 2 is provided on the outer side of the LED panel (15) located in the sealing groove; and a rubber ring 2 (23) located in the annular groove 2 is provided on the inner diameter of the annular plate (21); The rubber ring 1 (22) and the rubber ring 2 (23) are both made of heat-expandable rubber material and are respectively attached to the corresponding annular groove 1 and annular groove 2; Threaded rods (24) are also provided on both sides of the annular plate (21) in a threaded connection manner, and a hexagonal groove (25) is provided on one side of the threaded rod (24); A conductive component (3) for providing an electrical signal to the LED panel (15) is disposed on one side of the rectangular frame (14), and the conductive component (3) comprises a conductive plate (30) disposed on one side of the protective frame (12), and a rectangular plate (31) is disposed inside the protective frame (12) on one side of the conductive plate (30) passing through the outer wall of the protective frame (12), and a plurality of partition plates (32) are disposed on the rectangular plate (31), and symmetrically distributed card plates (33) are disposed between adjacent partition plates (32); A sliding groove (34) is symmetrically provided on one side of the LED panel (15) facing the clamping plate (33), a contact plate (35) is slidably arranged in the sliding groove (34), and a push spring (36) is arranged between the contact plate (35) and the inner wall of the sliding groove (34); The contact plates (35) are respectively located between the two corresponding clamping plates (33) and are slidably connected thereto.

2. A COB micro-pitch LED display sub-pixel packaging structure according to claim 1, characterized in that: Heat dissipation components (4) for dissipating heat from the LED panel (15) are also provided on both sides of the rectangular plate (31), and the heat dissipation components (4) include heat conduction plates (40) provided on both sides of the rectangular plate (31), and one side of the heat conduction plate (40) is in contact with the back side of the LED panel (15).

3. A COB micro-pitch LED display sub-pixel packaging structure according to claim 2, characterized in that: A heat dissipation plate (41) is provided on the side of the heat conducting plate (40) facing away from the LED panel (15), and one side of the heat dissipation plate (41) passes through the outer wall of the protection frame (12) and is located in the installation cavity (13).

4. A COB micro-pitch LED display sub-pixel packaging structure according to claim 2, characterized in that: The heat conducting plate (40) is provided with a plurality of guide grooves (42) distributed along its extension section, the upper and lower ends of the main frame (1) are both provided with circular grooves (43), and the transverse plate (10) and the longitudinal plate (11) are also provided with through grooves (44).

Images