LED display screen

Abstract

The utility model discloses an LED (light-emitting diode) display screen which is integrally designed in a sunken mode, a first sunken step surface and a second sunken step surface are arranged on the side wall of a bottom shell of a display screen module, and the display screen module can be embedded into a box frame through the first step surface and the second step surface. Meanwhile, the arc-shaped abutting parts are arranged at the two ends of the side, close to the box frame, of the power box shell body, the power box shell body is embedded into the mounting grooves of the box frame through the arc-shaped abutting parts, and therefore the whole LED display screen is lighter and thinner, light in weight and higher in carrying speed; secondly, hidden movable positioning pins which do not need to be completely disassembled are arranged on the borders of the LED display screen box body frame, so that workers do not need to waste too much time to search for positioning pins of proper models according to the sizes of pin holes, and accurate positioning of the LED display screen can be rapidly completed, and the assembly efficiency of the workers is improved; through the improvement of the technical scheme, the splicing speed of the LED display screen is comprehensively improved, and rapid splicing of the LED display screen is achieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to LED display screen technical field, concretely is a LED display screen. BACKGROUND

[0002] With the rapid development of digital media and advertising industry, LED display screen is widely used. Especially like outdoor activities, sports events, concerts and other large-scale activities often need large screen LED display screen, in order to facilitate the handling large screen LED display screen often by multiple small LED display screen assembly splicing is formed, these large-scale activities often time is urgent, therefore need large screen LED display screen can quickly complete splicing, and the factors that affect large screen LED display screen splicing speed mainly have two, one is the existing LED display screen is heavy and inconvenient to handle, leading to long handling time, another is the existing LED display screen splicing speed is slow. In order to realize LED display screen fast splicing, it is necessary to improve the existing LED display screen. UTILITY MODEL CONTENT

[0003] In order to solve the above-mentioned difficult problem, the utility model provides a LED display screen, including:

[0004] The box frame includes a rectangular structure of the frame, a power box bottom plate and a reinforcing rib, the power box bottom plate is erected in the frame, and the reinforcing rib is arranged between the power box bottom plate and the frame. The side of the frame is provided with a pin hole, and a hidden movable positioning pin is arranged in the pin hole. The hidden movable positioning pin is provided with a sliding groove, and the hidden movable positioning pin is provided with a first limiting groove and a second limiting groove at both ends of the sliding groove. The fastener is matched with the first limiting groove or the second limiting groove to fix the hidden movable positioning pin, and the fastener is screwed on the frame.

[0005] The display screen module is arranged on the front face of the box frame and detachably connected with the box frame. The display screen module includes a bottom shell. The side wall of the bottom shell is provided with a sunken first step surface and a second step surface. The first step surface is close to the side of the face cover. The first step surface and the second step surface are matched with the box frame to embed the bottom shell in the box frame.

[0006] The sunken power box module is arranged on the back face of the box frame and detachably connected with the box frame. The sunken power box module includes a box-shaped power box shell main body. The power box shell main body is provided with an arc-shaped abutting portion at both ends close to the side of the box frame. The arc-shaped abutting portion is embedded in the mounting groove of the box frame.

[0007] Preferably, the four top corners of the power box shell body extend out the rib plates, each rib plate is provided with a positioning assembly, the positioning assembly comprises a positioning column and an anti-loosening insert, the positioning column is a hollow cylindrical structure, the anti-loosening insert is sleeved in the positioning column, and a spring is arranged between the anti-loosening insert and the positioning column, the anti-loosening insert comprises a nut and a screw rod, the screw rod is provided with external threads at an end away from the nut, and during installation, the screw rod is inserted into the mounting hole of the box frame, and the power box shell body is locked with the box frame through cooperation of the external threads on the screw rod with the internal threads of the mounting hole.

[0008] Preferably, the two sides of the power box shell body are provided with symmetrical buckle connecting parts, a buckle is arranged on the buckle connecting part, and the buckle is rotationally connected with the buckle connecting part; the power box shell body is locked with the box frame through the buckle.

[0009] Preferably, the bottom shell is provided with magnet suction holes which are uniformly distributed and staggered, and the magnet suction holes are embedded with magnet suction blocks; the box frame is provided with a permanent magnet; and the magnet suction blocks and the permanent magnet are attracted to each other to magnetically connect the display screen module with the box frame.

[0010] Preferably, the four top corners of the frame are provided with soft rubber sleeves.

[0011] Preferably, the four top corners of the frame are provided with avoiding positions, the avoiding positions are provided with fixed connecting pieces, and the fixed connecting pieces are rotationally connected with module corner guards.

[0012] Preferably, the side edges of the frame are provided with arc-shaped locks.

[0013] Preferably, the side edges of the frame are provided with box handle grooves, the box handle grooves are provided with protruding parts which are integrally formed with the frame, the protruding parts are provided with connecting holes at two ends, box handles are provided with connecting shafts at two ends, the connecting shafts are rotationally connected in the connecting holes, the box handle grooves are further provided with box handle covers, and fasteners pass through the box handle covers and are screwed with the connecting shafts in the connecting holes.

[0014] Preferably, the display screen module further comprises an LED display lamp plate and a mask, the mask is arranged on the front surface of the bottom shell, the LED display lamp plate is arranged between the bottom shell and the mask, a recess is arranged on the first step surface, the recess is provided with shading cotton, the thickness of the shading cotton is a, the depth of the recess is b, and 2b≥a≥b.

[0015] Preferably, the shading cotton has a density of 50-60 kg / m 3 Sponge.

[0016] The beneficial effect lies in that: the whole application adopts a sinking design, the bottom shell side wall of the display screen module is provided with a sinking first step surface and a second step surface, the display screen module can be embedded into the box frame through the first step surface and the second step surface, meanwhile, the arc-shaped abutting portions are arranged at the two ends of the power box shell body close to the side of the box frame, the arc-shaped abutting portions are embedded into the mounting grooves of the box frame, so that the whole LED display screen is lighter and thinner, the carrying speed is faster; secondly, the hidden movable positioning pins are arranged on the frame of the LED display screen box frame, the LED display screen can be quickly and accurately positioned without completely disassembling, the workers can quickly complete the accurate positioning of the LED display screen without wasting too much time to find the appropriate type of positioning pin according to the size of the pin hole, and the assembly efficiency of the workers is improved; through the above technical scheme improvement, the LED display screen assembly speed is comprehensively improved, and the rapid assembly of the LED display screen is realized. BRIEF DESCRIPTION OF DRAWINGS

[0017] The drawings described herein are used to provide further understanding of the present application, constitute a part of the present application, the illustrative embodiments of the present application and the description thereof are used to explain the present application, and do not constitute improper limitation on the present application. In the drawings:

[0018] Figure 1 It is a whole structure schematic view of the utility model;

[0019] Figure 2 It is a box frame structure schematic view;

[0020] Figure 3 It is a sectional view of the hidden movable positioning pin inserted into the frame pin hole;

[0021] Figure 4 It is a sectional view of the hidden movable positioning pin;

[0022] Figure 5 It is an explosion schematic view of the box frame;

[0023] Figure 6 It is a module corner guard structure schematic view;

[0024] Figure 7 It is a wire harness buckle structure schematic view;

[0025] Figure 8 It is a structure schematic view of the box frame after splicing;

[0026] Figure 9 It is a structure schematic view of the back of the display screen module;

[0027] Figure 10 It is an enlarged view of the display screen module A part;

[0028] Figure 11 It is an explosion structure schematic view of the display screen module;

[0029] Figure 12 Structure diagram of the sinking power box module after being assembled in the cabinet frame;

[0030] Figure 13 First perspective exploded diagram of the sinking power box module;

[0031] Figure 14 Structure diagram of the anti-loosening insert;

[0032] Figure 15 Second perspective structure diagram of the sinking power box module;

[0033] In the figure:

[0034] 1, cabinet frame;

[0035] 11, frame; 111, hidden movable positioning pin; 1111, sliding groove; 1112, first limiting groove; 1113, second limiting groove; 112, soft rubber sleeve; 113, avoidance position; 1131, fixed connecting piece; 1132, module corner guard; 114, arc-shaped lock; 1141, arc-shaped lock seat; 1142, quick lock tongue; 115, cabinet handle groove; 1151, protruding part; 1152, cabinet handle; 11521, connecting shaft; 1153, cabinet handle cover; 116, spare handle; 117, quick lock piece; 12, power box bottom plate; 13, reinforcing rib; 131, accommodating groove; 1311, wire harness buckle; 13111, connecting part; 13112, clamping part; 14, mounting groove.

[0036] 2, display screen module;

[0037] 21, bottom shell; 211, side wall; 2111, first step surface; 21111, groove; 2112, second step surface; 2113, magnetic attraction hole; 2114, magnetic attraction block; 2115, nut column; 2116, handle groove; 21161, handle; 21162, handle cover; 22, LED display lamp plate; 23, mask;

[0038] 3, sinking power box module;

[0039] 31, power box shell main body; 311, arc-shaped abutting part; 312, positioning assembly; 3121, positioning column; 3122, anti-loosening insert; 31221, nut; 31222, screw rod; 3123, spring; 313, buckle connecting part; 3131, buckle; 314, power protruding part; 3141, power socket; 315, signal protruding part; 3151, signal socket; 316, spare signal interface; 317, holding groove; 318, display; 319, connecting column; 32, adapter plate; 33, power supply. DETAILED DESCRIPTION

[0040] The embodiments of the present application will be described below with reference to the drawings. Many specific details are set forth in the following description in order to provide a thorough understanding of the present application. It will be appreciated, however, that the present application can be practiced without specific details or with other methods, components, etc. In other instances, well-known structures and components are not described in detail in order to avoid obscuring the present application.

[0041] It should be noted that the directions such as up, down, left, right, front, back, etc. in the embodiments of the present application are merely used for explaining the relative position relationship and movement between the components in a certain posture shown in the drawings, and if the certain posture is changed, the directions will also be changed accordingly.

[0042] In addition, the descriptions such as "first", "second" and the like in the present application are merely for the purpose of description, and are not intended to particularly indicate the order or sequence, nor to limit the present application. They are merely used to distinguish the components or operations described by the same technical terms, and cannot be understood as indicating or implying the relative importance of the indicated technical features or implying the number of the indicated technical features. Therefore, the features limited by "first" and "second" can explicitly or implicitly include at least one of the features. In addition, the technical solutions of each embodiment can be combined with each other, but it must be based on the realization of the ordinary skilled in the art. When the combination of technical solutions contradicts each other or cannot be realized, it should be considered that the combination of technical solutions does not exist and is not within the protection scope required by the present application.

[0043] Embodiment

[0044] Please refer to the accompanying drawings Figure 1 , Figure 1 is a schematic diagram of the overall structure of the present application. The present embodiment provides an LED display screen, which comprises a box frame 1, a display screen module 2 and a sunken power box module 3. The display screen module 2 is arranged on the front face of the box frame 1 and is detachably connected with the box frame 1. The sunken power box module 3 is arranged on the back face of the box frame 1 and is detachably connected with the box frame 1. In this way, the LED display screen can be quickly installed and detached.

[0045] Please refer to the accompanying drawings Figure 2 , Figure 2The box frame structure is shown in the figure. The box frame 1 comprises a frame 11 in a rectangular structure, a power box bottom plate 12 and reinforcing ribs 13. The power box bottom plate 12 is arranged in the frame 11, and the power box is detachably mounted on the power box bottom plate 12. The reinforcing ribs 13 are arranged between the power box bottom plate 12 and the frame 11, and there can be multiple reinforcing ribs 13. The reinforcing ribs 13 can enhance the bearing capacity and strength of the frame 11, eliminate the internal stress of the frame 11, reduce deformation, increase toughness, and avoid deformation of the frame 11 due to insufficient strength. The frame 11 is composed of three layers, the inner layer is an ABS plastic layer, the middle layer is a honeycomb aluminum plate layer, and the outer layer is a stainless steel layer. The frame 11 is composed of three layers, the inner layer is made of ABS plastic material, which is light in weight, easy to process, has a buffering effect, the middle layer is a honeycomb aluminum plate layer, which can significantly improve the rigidity of the entire frame and reduce the weight, and the outer layer is a stainless steel layer, which can greatly improve the strength of the entire frame and has good corrosion resistance. The thickness ratio of the inner layer, the middle layer and the outer layer is 3:4:1. This design not only makes the entire box frame meet the lightweight requirement, but also makes the box frame more firm and reliable, and improves the safety. In this embodiment, the frame made of the three-layer structure weighs only 60% of the frame made of stainless steel material with the same size and thickness, which significantly reduces the weight of the LED display screen, and is more conducive to the transportation of the LED display screen, and the lighter weight makes the transportation faster.

[0046] Referring back to Figure 2 Further in combination with Figure 5 , Figure 5 The box frame is shown in the figure. The frame 11 is provided with an integrally formed spare handle 116 on both sides. The spare handle 116 is preferably arranged on the side of the frame 11 without a handle. The spare handle 116 can provide a stable gripping point. When multiple people are needed to cooperate to assemble a large LED display screen, the spare handle 116 allows each participant to find a suitable gripping point, ensuring the safety of the operation.

[0047] Referring back to Figure 2 Further in combination with Figure 3 and Figure 4 , Figure 3 The cross-sectional view of the hidden movable positioning pin inserted into the frame pin hole is shown in the figure, Figure 4It is a hidden movable positioning pin sectional view. The side of the frame 11 is provided with a pin hole, and a hidden movable positioning pin 111 is arranged in the pin hole. The hidden movable positioning pin 111 is provided with a sliding groove 1111, and the hidden movable positioning pin 111 is provided with a first limiting groove 1112 and a second limiting groove 1113 at both ends of the sliding groove 1111. The fastener cooperates with the first limiting groove 1112 or the second limiting groove 1113 to fix the hidden movable positioning pin 111. The fastener is screwed on the frame 11. In this embodiment, the fastener can be a screw. When the hidden movable positioning pin 111 is needed to position the climbable LED display screen box frame, the fastener is loosened, the hidden movable positioning pin 111 is pulled out of the pin hole, the hidden movable positioning pin 111 extends out of the frame 11 from the pin hole, and then the fastener is inserted into the second limiting groove 1113 of the hidden movable positioning pin 111 and tightened to fix the hidden movable positioning pin 111. When the hidden movable positioning pin 111 is not needed to position the climbable LED display screen box frame, especially when the installation space is limited due to the ceiling, the fastener is loosened, the hidden movable positioning pin 111 is pressed back into the pin hole, the hidden movable positioning pin 111 extends into the frame 11 from the pin hole, and then the fastener is inserted into the first limiting groove 1112 of the hidden movable positioning pin 111 and tightened to fix the hidden movable positioning pin 111, so that the positioning pin is perfectly hidden.

[0048] Referring back to Figure 2 and Figure 5 , the four corners of the frame 11 are provided with soft rubber sleeves 112. The soft rubber sleeves 112 can play a buffering role to avoid damage to the frame 11 caused by collision during transportation. The four corners of the frame 11 are also provided with avoidance positions 113. In combination with Figure 6 , Figure 6 , it is a schematic view of the module corner protection structure. The avoidance position 113 is provided with a fixed connecting piece 1131, and the fixed connecting piece 1131 is rotatably connected with a module corner protection 1132. The module corner protection 1132 can be flipped 180° up and down relative to the fixed connecting piece 1131. When transporting the LED display screen, the module corner protection 1132 can be flipped to the top corner of the module to protect the top corner of the module from being damaged due to collision. When splicing the LED display screen, the module corner protection 1132 can be flipped back to the avoidance position 113 to hide. The fixed connecting piece 1131 is provided with a first through hole, and the module corner protection 1132 is provided with a corresponding second through hole. The shaft pin passes through the first through hole and the second through hole to realize the rotational connection between the module corner protection 1132 and the fixed connecting piece 1131.

[0049] Referring back to Figure 5 , in combination with Figure 7 , Figure 7This is a schematic diagram of the wire harness clip structure. The reinforcing rib 13 also has a receiving groove 131, within which the wire harness clip 1311 is housed. The wire harness clip 1311 includes a connecting part 13111 and opposing engaging parts 13112. The engaging parts 13112 are respectively located on both sides of the connecting part 13111 and integrally formed with it, making the wire harness clip 1311 generally "U"-shaped. The connecting part 13111 is fixed within the receiving groove 131 by fasteners. This design makes the wire harness clip 1311 easy to install and remove, and can secure wire harnesses of different diameters. This wire harness clip 1311 does not require CNC machining; it is directly injection molded, resulting in a simple manufacturing process, low cost, and easy disassembly and installation. Screws can be used as the fasteners.

[0050] See also Figure 2 , Figure 5 Combined again Figure 8 , Figure 8 This is a schematic diagram of the assembled cabinet frame. An arc-shaped lock 114 is provided on the side of the frame 11, enabling the LED display screen to be spliced ​​in an arc shape. Specifically, an arc-shaped lock seat 1141 is provided on one side of the frame 11. The arc-shaped lock seat 1141 has an arc-shaped cavity, and the arc-shaped lock core is movably disposed in the arc-shaped cavity. An arc-shaped groove is provided on the arc-shaped surface of the arc-shaped lock seat 1141, and at least a part of the arc-shaped lock core extends out of the arc-shaped groove. The arc-shaped lock core slides along the arc-shaped lock seat 1141 to adjust its angle. A quick-locking tongue 1142 is provided on the side of the frame 11 of the adjacent climbable LED display cabinet frame. The quick-locking tongue 1142 engages with the arc-shaped lock core to lock it in place. When the LED display screen needs to be spliced ​​in an arc shape, simply adjust the angle of the arc-shaped lock core, and then insert the quick-locking tongue 1142 on the adjacent climbable LED display cabinet frame into the arc-shaped lock core of this climbable LED display cabinet frame to lock it securely. Of course, the side of the frame 11 is also equipped with a quick lock plate 117. If the LED display screen does not require curved splicing or the curved lock seat 1141 is damaged and cannot be used, the quick lock plate 117 can be activated. The two adjacent LED display screen cabinet frames can be locked and fixed by inserting the quick lock tongue 1142 into the lock hole of the quick lock plate 117.

[0051] See also Figure 2 and Figure 5The side edge of the frame 11 is provided with a box handle groove 115, the box handle groove 115 is provided with a protruding part 1151 which is integrally formed with the frame, the both ends of the protruding part 1151 are provided with connecting holes, the both ends of the box handle 1152 are provided with connecting shafts 11521 which are rotatably connected in the connecting holes, the box handle groove 115 is further provided with a box handle cover 1153, and the fastener passes through the box handle cover 1153 and is screwed with the connecting shaft 11521. The integrated handle design can make the box handle 1152 and the frame 11 more stable, has low assembly cost and high safety. The box handle 1152 adopts a hidden design, can be stored in the box handle groove 115 when not needed, and can be opened from the box handle groove 115 when used. The box handle 1152 can make the user more comfortable during carrying. The handle cover 1153 can further improve the structural stability and prevent water and dust from affecting the connecting shaft 11521 and the fastener.

[0052] Please refer to Figure 11 , Figure 11 The exploded structural diagram of the display screen module is shown. The embodiment provides a sunken LED display screen module which is installed on an LED display screen box during use. The sunken LED display screen module comprises a bottom shell 21, an LED display lamp plate 22 and a face shield 23. The face shield 23 is arranged on the front surface of the bottom shell 21, and the LED display lamp plate 22 is arranged between the bottom shell 21 and the face shield 23. In order to facilitate installation and disassembly, the LED display lamp plate 22 can be fixed on the bottom shell 21 by means of adhesion or screwing combined with adhesion, that is, the four corners of the display lamp plate 22 are fixed on the bottom shell 21 by means of screwing, and the other parts of the display lamp plate 22 are fixed on the bottom shell 21 by means of adhesion. The face shield 23 can be fixed on the LED display lamp plate 22 by means of adhesion or screwing combined with adhesion, that is, the four corners of the face shield 23 are fixed on the LED display lamp plate 22 by means of screwing, and the other parts of the face shield 23 are fixed on the LED display lamp plate 22 by means of adhesion.

[0053] Please refer to Figure 3 Please refer to Figure 9 , Figure 9As shown in FIG. 1, the display module 2 is connected to the box frame 1 through the bottom shell 21. The bottom shell 21 is provided on the box frame 1, and the bottom shell 21 is provided with magnetic holes 2113 which are uniformly distributed and staggered. The magnetic holes 2113 are embedded with magnetic blocks 2114. The magnetic blocks 2114 can be selected from magnetized magnet blocks. The box frame 1 is provided with a permanent magnet. The magnetic blocks 2114 and the permanent magnet are attracted to each other, so that the display module 2 is magnetically connected to the box frame 1. This magnetic connection can realize quick disassembly and installation of the display module 2 and the box frame 1, greatly improving the work efficiency. In order to reduce the cost, another design scheme is provided in the embodiment, that is, the magnetic holes 2113 are provided at the four corners of the bottom shell 21, the magnetic blocks 2114 are embedded in the magnetic holes 2113, nut columns 2115 with threaded holes are arranged at other positions on the back of the bottom shell 21, and the threaded holes are staggered with the magnetic holes 2113. The number of the nut columns 2115 can be reasonably arranged according to the area of the display module 2. For example, the number of the nut columns 2115 on the display module 2 with a length of 1 meter and a width of 0.5 meter is preferably 10. The 10 nut columns 2115 are uniformly distributed and staggered on the back of the bottom shell 21. The through holes are arranged on the box frame 1, and the fasteners such as screws are passed through the through holes on the box frame 1 and are screwed with the nut columns 2115, so that the display module 2 is fastened on the box frame 1. Compared with the magnetic connection, the screw connection is more cost-saving. However, if the screw connection is completely used, the installation and disassembly speed is relatively slow, and the bolts at the corners are difficult to disassemble. Therefore, the combination of the magnetic connection and the screw connection can not only save the cost to the greatest extent, but also speed up the installation and disassembly of the LED display screen. Whether the full magnetic connection or the magnetic connection combined with the screw connection, a set of molds can be shared when the bottom shell is prepared by the injection molding process, without the need to open another mold, thereby saving the mold opening cost.

[0054] Referring back to Figure 9 and Figure 11 , the side wall 211 of the bottom shell 21 is provided with a first stepped surface 2111 and a second stepped surface 2112. The first stepped surface 2111 is close to the side of the face cover 23. The stepped surface design can make the most of the volume of the bottom shell 21 embedded in the box frame 1, so that the volume of the display module 2 exposed outside is reduced. This can not only thin the thickness of the whole LED display screen, but also reduce the injury probability of the display module 2 during transportation, and ensure that the adjacent bottom shells do not resist each other when the display module 2 is spliced. In order to improve the impact resistance of the display module 2, a high-elasticity buffer protective sleeve can be added to the four corners of the first stepped surface 2111. The first stepped surface 2111 is an inclined surface relative to the second stepped surface 2112, and the inclination angle between the first stepped surface 2111 and the second stepped surface 2112 is 10-45°. This inclined design can ensure that multiple display modules 2 are spliced to obtain LED display screens with various bending degrees, meeting various curved display requirements.

[0055] Please refer to Figure 10 , Figure 10 It is an enlarged view of the display screen module A part. The first step surface 2111 is provided with a groove 21111, and the groove 21111 is provided with shading cotton. The shading cotton can be fixed in the groove 21111 by adhesive. The shading cotton is made of cotton or sponge, and the density is preferably 50-60 kg / m 3 The sponge-made shading cotton not only ensures a certain softness to be compressed into the groove 21111, but also provides better shading and durability. The thickness of the shading cotton is a, the depth of the groove 21111 is b, and 2b≥a≥b. This design can make the shading cotton closer to the LED display lamp panel 22, which is more conducive to shading. Even if the thickness of the shading cotton is increased, the shading cotton can be compressed into the groove 21111 during the splicing of the display screen module 2, which will not affect the splicing flatness of the LED display screen.

[0056] Please refer to Figure 9 and Figure 11 The back surface of the bottom shell 21 is provided with two handle grooves 2116, and the handle grooves 2116 are provided with handles 21161 and handle covers 21162. The handle cover 21162 is fixedly connected with the handle groove 2116, the handle 21161 is inserted into the handle cover 21162, the handle cover 21162 is provided with a through hole, and the fastener passes through the through hole and abuts against the handle 21161 to lock the handle 21161 in the handle cover 21162. In this way, the handle 21161 can rotate relative to the handle groove 2116. The handle is convenient for carrying and installation, and enhances portability.

[0057] Please refer to Figure 12 , Figure 12 It is a structure schematic view of the sunken power box module after being assembled in the box frame. The sunken power box module 3 includes a power box shell main body 31, an adapter plate 32 and a power supply 33. The power box shell main body 31 is in a box type structure, the adapter plate 32 cooperates with the power box shell main body 31 to form a containing cavity, and the adapter plate 32 is detachably connected with the power box shell main body 31. The power supply 33 is arranged in the containing cavity, and the power supply 33 is detachably connected with the adapter plate 32. The power box shell main body 31 is provided with arc abutting portions 311 at both ends near one side of the box frame 1. The arc abutting portions 311 are embedded in the mounting grooves 14 of the box frame 1. Through the sunken design, the contact area of the power box shell main body 31 and the box frame 1 can be expanded, better tight-fitting effect can be achieved, the overall thickness of the LED display screen can be reduced, and the power box can directly use the LED display screen for heat dissipation, improving the heat conduction efficiency.

[0058] Please refer to Figure 13 , Figure 13It is the first perspective view of the sinking power box module. The rib plate is extended from each of the four top corners of the power box shell main body 31. The positioning assembly 312 is arranged on each rib plate. The positioning assembly 312 comprises a positioning column 3121 and an anti-loosening insert 3122. The positioning column 3121 is a hollow cylindrical structure. The anti-loosening insert 3122 is sleeved in the positioning column 3121. In this embodiment, the original positioning column arranged in the inside of the power box shell main body 31 is improved. The positioning column 3121 is moved to the outside of the power box shell main body 31 to save the inside space of the power box shell main body 31. The positioning column 3121 is designed as a hollow cylindrical structure. The anti-loosening insert 3122 is sleeved in the positioning column 3121. The power box shell main body 31 is locked with the cabinet frame 1 through the anti-loosening insert 3122. Thus, the positioning function and the locking effect are realized at the same time. The LED display screen assembling speed is greatly improved. The waterproof and dustproof ability of the LED display screen power box is greatly improved in combination with the sinking design. Figure 13 Further in combination Figure 14 , Figure 14 It is the structure diagram of the anti-loosening insert. The spring 3123 is arranged between the anti-loosening insert 3122 and the positioning column 3121. The anti-loosening insert 3122 comprises a nut 31221 and a screw rod 31222. The outer thread is arranged at the end of the screw rod 31222 away from the nut 31221. During installation, the screw rod 31222 is inserted into the mounting hole of the cabinet frame 1. The power box shell main body 31 is locked with the cabinet frame 1 through the cooperation of the outer thread on the screw rod 31222 and the inner thread of the mounting hole. This design makes the anti-loosening insert 3122 not easy to fall off during installation and disassembly. The outer thread arranged at the end of the screw rod 31222 away from the nut 31221 can improve the installation efficiency. During disassembly, the anti-loosening insert 3122 can be pushed out through the spring 3123. The operator can know that the disassembly is completed without observing with the naked eye.

[0059] Further in combination Figure 13 Further in combination Figure 15 , Figure 15 It is the second perspective view of the sinking power box module. The symmetrical buckle connection parts 313 are arranged on both sides of the power box shell main body 31. The buckles 3131 are arranged on the buckle connection parts 313 and are rotationally connected with the buckle connection parts 313. The power box shell main body 31 is quickly buckled and locked with the cabinet frame 1 through the buckles 3131. The disassembly is also very fast. The power box shell main body 31 can be quickly separated from the cabinet frame 1 by only opening the buckles 3131. More preferably, two buckles 3131 are arranged on each side of the power box shell main body 31. Thus, a stronger locking effect can be provided. The multiple buckles 3131 can apply pressure at different positions, so that the power box can better fit the surface of the LED display screen.

[0060] The embodiment provides two locking modes. In addition to the locking of the power box shell body 31 and the box frame 1 by the anti-loosening insert 3122, the power box shell body 31 and the box frame 1 can also be locked and fastened by a buckle. In this way, the user can make different selections according to actual needs, and if the two locking modes are used at the same time, double protection can be realized to prevent the power box from loosening and the internal components of the power box from being exposed, thereby further reducing the safety risk.

[0061] Referring back to Figure 13 and Figure 15 , the power box shell body 31 is provided with power protrusions 314 on both sides of one end. The inner side of the power protrusions 314 is provided with power ports that are inclined downward and matched with power jack sockets 3141. The power jack sockets 3141 are arranged in the accommodation cavity. The power box shell body 31 is provided with signal protrusions 315 on both sides of the end away from the power protrusions 314. The inner side of the signal protrusions 315 is provided with signal ports that are inclined downward and matched with signal jack sockets 3151. The signal jack sockets 3151 are arranged in the accommodation cavity. The inclined downward design is beneficial to interface connection and operation, and effectively reduces the overall thickness of the sunken power box module 3. The power box shell body 31 is also provided with a spare signal interface 316 at the end close to the signal protrusions 315. The spare signal interface 316 can be used to connect temporary equipment or tools, which is convenient for engineers to test and speed up project progress. When the main signal interface fails or is occupied, the spare signal interface can be quickly switched to ensure that the equipment will not be disabled due to signal interruption.

[0062] Referring back to Figure 15 , the power box shell body 31 is provided with a display 318, and the display 318 is electrically connected with the power supply 33. The display 318 is used to display the signal conditions of each interface in the power box, and is used to intuitively reflect the use of the power box, so that the staff can know the real-time condition of the power box in time, thereby providing protection for the maintenance and replacement of the power box. The power box shell body 31 is provided with symmetrical grip grooves 317 or finger grooves on both sides, which are convenient for the user to grab or carry the power box. The power box shell body 31 is provided with a connecting column 319. The adapter plate 32 is fastened on the power box shell body 31 by cooperating with the connecting column 319 and fasteners. The connecting column 319 is pre-set, so that the installation process is more simple and fast. Only the fasteners need to be aligned with the connecting column 319 and tightened to complete the assembly, thereby reducing the operation difficulty. The power supply 33 and the adapter plate 32 are detachably connected by fasteners. The detachable design is convenient for subsequent maintenance work.

[0063] In summary, the present application aims to provide a kind of LED display screen, overall adopts sunken design, the bottom shell 21 side wall 211 of display screen module 2 is equipped with sunken first step surface 2111 and second step surface 2112, through first step surface 2111 and second step surface 2112 can make display screen module embed box frame 1, simultaneously, power box shell main body 31 is equipped with arc abutting portion 311 in the two ends of close to box frame 1 side, through arc abutting portion 311 embeds the installation slot 14 in box frame 1, to make the whole LED display screen more light and thin, quality is light, and carrying speed is faster;Secondly, by setting up the hidden movable positioning pin 111 that does not need to be completely disassembled on the frame of LED display screen box frame, without worker waste excessive time to find suitable model positioning pin according to pin hole size, can quickly complete LED display screen accurate positioning, improve the assembly efficiency of worker;Through the above technical scheme improvement, the assembly speed of LED display screen is improved comprehensively, and the rapid assembly of LED display screen is realized.

[0064] The above is only the embodiment of the present application, and is not used to limit the present application. For those skilled in the art, the present application can have various changes and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the scope of claims of the present application.

Claims

1. An LED display screen, characterized in that, The utility model relates to a kind of cabinet frame (1), including rectangular structure side frame (11), power box bottom plate (12) and reinforcing rib (13), power box bottom plate (12) is erected in the side frame (11), reinforcing rib (13) is located between the power box bottom plate (12) and the side frame (11);The side of the side frame (11) is provided with pin hole, the hidden movable positioning pin (111) is arranged in the pin hole, the hidden movable positioning pin (111) is provided with sliding slot (1111), the hidden movable positioning pin (111) is respectively provided with first limit slot (1112) and second limit slot (1113) at the both ends of the sliding slot (1111), fastener cooperates with the first limit slot (1112) or second limit slot (1113) to fix the hidden movable positioning pin (111), the fastener is screwed on the side frame (11); Display screen module (2) is arranged on the front of the cabinet frame (1), and is detachably connected with the cabinet frame (1), the display screen module (2) includes bottom shell (21), the side wall (211) of the bottom shell (21) is provided with sunken first step surface (2111) and second step surface (2112), the first step surface (2111) is close to the side of face cover (23), and the first step surface (2111) and the second step surface (2112) are matched with the cabinet frame (1) to make the bottom shell (21) embedded in the cabinet frame (1); Sunken power box module (3) is arranged on the back of the cabinet frame (1), and is detachably connected with the cabinet frame (1), the sunken power box module (3) includes box-shaped power box shell main body (31), the power box shell main body (31) is provided with arc-shaped abutting portion (311) at both ends close to the cabinet frame (1) side, and the arc-shaped abutting portion (311) is embedded in the mounting groove (14) of the cabinet frame (1). The power box shell main body (31) extends rib plate from four top corners, and each rib plate is provided with a positioning assembly (312), the positioning assembly (312) includes a positioning column (3121) and an anti-loosening insert (3122), the positioning column (3121) is a hollow cylindrical structure, the anti-loosening insert (3122) is sleeved in the positioning column (3121), a spring (3123) is arranged between the anti-loosening insert (3122) and the positioning column (3121), the anti-loosening insert (3122) includes a nut (31221) and a screw rod (31222), the screw rod (31222) is provided with external threads away from the nut (31221), the screw rod (31222) is inserted into the mounting hole of the cabinet frame (1) during installation, and the power box shell main body (31) is locked with the cabinet frame (1) by the cooperation of the external threads on the screw rod (31222) and the internal threads of the mounting hole.

2. The LED display screen of claim 1, wherein, ​ 3. The LED display screen of claim 1, wherein, The power box shell body (31) is provided with symmetrical buckle connecting parts (313) on both sides, buckles (3131) are arranged on the buckle connecting parts (313), and the buckles (3131) are rotationally connected with the buckle connecting parts (313); and the power box shell body (31) is locked and fastened with the box frame (1) through the buckles (3131).

4. The LED display screen of claim 1, wherein, The bottom shell (21) is provided with magnet suction holes (2113) that are uniformly distributed and staggered, respectively, and the magnet suction holes (2113) are embedded with magnet suction blocks (2114); the box frame (1) is provided with a permanent magnet, and the magnet suction blocks (2114) and the permanent magnet are attracted to each other, so that the display screen module (2) is magnetically connected with the box frame (1).

5. The LED display screen of claim 1, wherein, The frame (11) is provided with soft rubber sleeves (112) at four top corners.

6. The LED display screen of claim 1, wherein, The frame (11) is provided with avoiding positions (113) at four top corners, and the avoiding positions (113) are provided with fixed connecting pieces (1131), and the fixed connecting pieces (1131) are rotationally connected with module corner guards (1132).

7. The LED display screen of claim 1, wherein, The frame (11) is provided with arc-shaped locks (114) on side edges.

8. The LED display screen of claim 1, wherein, The frame (11) is provided with box handle grooves (115) on side edges, the box handle grooves (115) are provided with protruding parts (1151) integrally formed with the frame, the protruding parts (1151) are provided with connecting holes at both ends, box handles (1152) are provided with connecting shafts (11521) at both ends, the connecting shafts (11521) are rotationally connected in the connecting holes, the box handle grooves (115) are further provided with box handle covers (1153), and fasteners pass through the box handle covers (1153) and are screwed with the connecting shafts (11521) in the connecting holes.

9. The LED display screen of claim 1, wherein, The display screen module (2) further comprises an LED display lamp plate (22) and a mask (23), the mask (23) is arranged on the front surface of the bottom shell (21), the LED display lamp plate (22) is arranged between the bottom shell (21) and the mask (23), the first step surface (2111) is provided with a groove (21111), the groove (21111) is provided with shading cotton, the thickness of the shading cotton is a, the depth of the groove (21111) is b, and 2b≥a≥b.

10. The LED display screen of claim 9, wherein, The shading cotton is selected from sponges with a density of 50-60 kg / m³.

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