Articulated mechanism, cabinet and LED display

Abstract

The present invention provides a hinge mechanism, a box and an LED display screen, comprising a first hinge, a second hinge, a pin, a first frame, a second frame and a display unit, wherein the first hinge and the second hinge are both used to fix the display unit; both ends of the first hinge in the length direction are provided with a first guide position, and both ends of the second hinge in the length direction are provided with a second guide position corresponding to the first guide position, and the first guide position and the second guide position are movably connected through the pin; the first guide position can guide the second guide position to move so that the angle between the first hinge and the second hinge changes; the first frame is connected to the first guide position or the second guide position in a guiding manner, and the second frame is connected to the first guide position or the second guide position in a guiding manner. The hinge mechanism, the box and the LED display screen provided by the present invention fix the display unit to the hinge mechanism, so that the LED display screen itself can be bent, which increases the number of bending times of the assembled LED display screen, thereby improving the bending effect of the LED display screen.

Description

Technical Field

[0001] The invention belongs to the technical field of LED display screens, and more specifically, relates to a hinge mechanism, a box body and an LED display screen. Background Art

[0002] LED display is a flat-panel display used to display information such as text, images, videos and video signals. Because LED display can be extended arbitrarily, seamlessly assembled, has a long operating time, can use interactive technology, and has good display effects, it is widely used in airports, shopping malls, hotels, high-speed railways, subways, cinemas, exhibitions, office buildings and other places; in order to adapt to different application occasions, curved LED display screens have appeared on the market to improve the display effect.

[0003] One of the bending methods of existing LED display screens on the market is to fix several display units on a box to assemble an LED display screen, and then use the arc lock on the box to change the connection angle of adjacent boxes to realize the assembly between the LED display screens, so as to obtain a curved LED display screen through assembly. However, due to the fixed shape of the box itself, a single LED display screen is not easy to bend, so the curved surface of the arc-assembled LED display screen is obviously block-shaped and angular. When the site for placing the LED display screen is not large, the bending angle of the assembled LED display screen is limited. In addition, due to the large size of a single LED display screen, the bending angle of the assembled LED display screen is not ideal. At the same time, the joints and flatness of the LED display screens cannot be guaranteed. When subjected to gravity, tensile force and other forces, they will be severely deformed and easily misaligned, affecting the display effect. Summary of the invention

[0004] The object of the present invention is to provide a hinge mechanism, a box and an LED display screen to solve the technical problem of an unsatisfactory bending shape of an LED display screen in the prior art.

[0005] To achieve the above object, the technical solution adopted by the present invention is: to provide a hinge mechanism, including a first hinge, a second hinge and a pin, wherein the first hinge is used to fix a display unit, and the second hinge is used to fix another display unit;

[0006] Both ends of the first hinge in the length direction are provided with a first guide position, and both ends of the second hinge in the length direction are provided with a second guide position corresponding to the first guide position, and the first guide position and the second guide position are movably connected through the pin shaft;

[0007] The first guide position can guide the second guide position to move so as to reduce or increase the included angle between the first hinge and the second hinge.

[0008] Further, the first guide position includes a concave guide position and a first arc-shaped hole, the second guide position includes a first protrusion, and the pin shaft includes a first connecting pin;

[0009] The first protrusion is provided with a first connecting hole, and the first connecting pin passes through the first connecting hole and the first arc-shaped hole and connects the first hinge to the second hinge;

[0010] The recessed guide position can guide the first protrusion to move so as to reduce or increase the angle between the first hinge and the second hinge.

[0011] Furthermore, the recessed guide position includes a second arc-shaped hole, the first protrusion is also provided with a second connecting hole, and the pin shaft also includes a second connecting pin;

[0012] The second connecting pin passes through the second connecting hole and the second arc-shaped hole and is fixed on the second guide position;

[0013] The movement trajectory of the first connecting pin in the first arc-shaped hole and the movement trajectory of the second connecting pin in the second arc-shaped hole are located on the same arc line.

[0014] Furthermore, the movement trajectories of the pins at both ends of the first hinge are mirror-symmetrical.

[0015] Furthermore, the second guide position also includes a second protrusion, the ends of the first connecting pin and the second connecting pin are fixed on the second protrusion, and the first arc-shaped hole and the second arc-shaped hole are located between the first protrusion and the second protrusion.

[0016] Furthermore, the recessed guide position further includes a guide groove adapted to the first convex block or / and the second convex block, and the first convex block or / and the second convex block extends into the corresponding guide groove;

[0017] The second arc-shaped hole is arranged at the bottom of the guide groove.

[0018] Furthermore, the first guide position further includes a third protrusion located between the first protrusion and the second protrusion, and the first arc-shaped hole and the second arc-shaped hole are both provided on the third protrusion.

[0019] The present invention further provides a box body, comprising a first frame, a second frame and the hinge mechanism described in any one of the above technical solutions, wherein a third guide position is provided on one side of the first frame and is connected to the first guide position or the second guide position in a guiding manner, and a fourth guide position is provided on one side of the second frame and is connected to the first guide position or the second guide position in a guiding manner;

[0020] The box is used for fixedly connecting the display unit.

[0021] The present invention further provides an LED display screen, comprising a plurality of display units and the box body described in the above embodiment, wherein all the display units are fixedly connected to the first hinge and the second hinge correspondingly.

[0022] Furthermore, it also includes a back cover assembly fixed on the display unit and a flat cable led out from the back cover assembly, wherein the back cover assembly, the flat cable and the hinge mechanism are all located on the same side of the display unit;

[0023] The flat cable is connected to each of the display units along an assembling direction of the display units.

[0024] The hinge mechanism, box and LED display screen provided by the present invention have the following beneficial effects: compared with the prior art, the pin shaft of the hinge mechanism of the present invention flexibly connects the first guide position of the first hinge and the second guide position of the second hinge, and then guides the movement of the second guide position through the first guide position to reduce or increase the angle between the first hinge and the second hinge. After multiple hinge mechanisms are guided to be hinged, the influence of the corner formed by the bending of the first hinge relative to the second hinge on the overall bending shape can be reduced, so that the overall shape is close to an arc; the first hinge and the second hinge are respectively fixedly connected to a single display unit, and the multiple hinge mechanisms after bending and guiding the hinge are connected, so that the display unit bends relative to another adjacent display unit as the first hinge or the second hinge moves, so as to reduce the size of the bent display unit, thereby making multiple display units spliced The overall shape of the assembled LED display screen is closer to an arc, which improves the display effect of the LED display screen. Compared with the existing assembled LED display screen, it has more bending times and better bending effect. Since the first guide position has a guiding effect on the movement of the second guide position, the second guide position cannot move arbitrarily relative to the first guide position, and can only move along the guiding direction of the first guide position. When the second guide position moves in directions other than the guiding direction of the first guide position, the first guide position can limit the second guide position. Therefore, after fixing the two display units at both ends of the assembled multiple display units, no other limiting structures are needed, and the first hinge and the second hinge in the middle of the entire LED display screen can limit each other and lock, ensuring that the overall shape of the assembled hinge mechanism can be arc-shaped without deformation. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0026] Figure 1 A schematic diagram of the structure of an LED display screen provided by an embodiment of the present invention Figure 1 ;

[0027] Figure 2 A schematic diagram of the structure of an LED display screen provided by an embodiment of the present invention Figure 2 ;

[0028] Figure 3 A schematic diagram of the structure of an LED display screen provided by an embodiment of the present invention Figure 3 ;

[0029] Figure 4 A schematic diagram of the structure of an LED display screen provided by an embodiment of the present invention Figure 4 ;

[0030] Figure 5 A schematic diagram of the structure of an LED display screen provided by an embodiment of the present invention Figure 5 ;

[0031] Figure 6 for Figure 1 Schematic diagram of the exploded structure of the LED display;

[0032] Figure 7 for Figure 6 The enlarged view of point A in the middle;

[0033] Figure 8 for Figure 1 A schematic diagram of the structure of the hinge mechanism;

[0034] Fig. 9 for Figure 8 A schematic diagram of the structure of the first hinge;

[0035] Fig.10 for Figure 8 Schematic diagram of the structure of the second hinge and pin.

[0036] Among them, the reference numerals in the figure are:

[0037] 1. hinge mechanism; 11. first hinge; 111. first guide position; 1111. recessed guide position; 11111. second arc-shaped hole; 11112. guide groove; 1112. first arc-shaped hole; 1113. third convex block; 12. second hinge; 121. second guide position; 1211. first convex block; 12111. first connecting hole; 12112. second connecting hole; 1212. second convex block; 13. pin shaft; 131. first connecting pin; 132. second connecting pin; 14. first mounting hole; 15. positioning hole; 2. display unit; 21. first limit buckle; 22. second limit buckle; 23. second mounting hole; 24. positioning column; 3. box body; 31. first frame; 311. third guide position; 32. second frame; 321. fourth guide position; 4. cable fixing seat; 5. cable; 6. back cover assembly. DETAILED DESCRIPTION

[0038] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0039] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0040] It should be understood that the orientation or position relationship indicated by terms such as "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0041] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0042] See also Figure 1 , Figure 8 , Fig. 9 and Fig.10Now, the hinge mechanism provided by the present invention is described. The hinge mechanism 1 includes a first hinge 11, a second hinge 12 and a pin 13. The first hinge 11 is used to fix one display unit 2, and the second hinge 12 is used to fix another display unit 2;

[0043] Both ends of the first hinge 11 in the length direction are provided with first guide positions 111, and both ends of the second hinge 12 in the length direction are provided with second guide positions 121 corresponding to the first guide positions 111, and the first guide positions 111 and the second guide positions 121 are movably connected via a pin shaft 13;

[0044] The first guide position 111 can guide the second guide position 121 to move so as to reduce or increase the included angle between the first hinge 11 and the second hinge 12 .

[0045] Compared with the prior art, the hinge mechanism 1 provided by the present invention has a pin shaft 13 that movably connects the first guide position 111 of the first hinge 11 and the second guide position 121 of the second hinge 12, and then guides the movement of the second guide position 121 through the first guide position 111 so as to reduce or increase the angle between the first hinge 11 and the second hinge 12. After the plurality of hinge mechanisms 1 are guided to be hinged, the influence of the angle formed by the bending of the first hinge 11 relative to the second hinge 12 on the overall bending shape can be reduced, so that the overall shape is close to an arc; the first hinge 11 and the second hinge 12 are respectively fixedly connected to a single display unit 2, and the plurality of hinge mechanisms 1 are hinged through the bending guide so that the display unit 2 moves with the first hinge 11 or the second hinge 12 and bends relative to another adjacent display unit 2, so as to reduce the size of the bent display unit 2, thereby making the LED display composed of the plurality of display units 2 The overall shape of the display screen is closer to an arc, which improves the display effect of the LED display screen. Compared with the existing assembled LED display screen, it has more bending times and a better bending effect. Since the first guide position 111 has a guiding effect on the movement of the second guide position 121, the second guide position 121 cannot move arbitrarily relative to the first guide position 111, and can only move along the guiding direction of the first guide position 111. When the second guide position 121 moves in directions other than the guiding direction of the first guide position 111, the first guide position 111 can limit the second guide position 121. Therefore, after fixing the two display units 2 at both ends of the assembled multiple display units 2, no other limiting structures are required, and the first hinge 11 and the second hinge 12 in the middle of the entire LED display screen can limit each other and lock, thereby ensuring that the overall shape of the assembled hinge mechanism 1 can be arc-shaped without deformation.

[0046] Specifically, the maximum bending angle of the second hinge 12 relative to the first hinge 11 in the positive direction is 10°, and the maximum bending angle in the negative direction is 10°.

[0047] For further information, see Figures 8 to 10 As a specific embodiment of the hinge mechanism 1 provided by the present invention, the first guide position 111 includes a recessed guide position 1111 and a first arc-shaped hole 1112, the second guide position 121 includes a first protrusion 1211, and the pin shaft 13 includes a first connecting pin 131;

[0048] The first protrusion 1211 is provided with a first connecting hole 12111, and the first connecting pin 131 passes through the first connecting hole 12111 and the first arc-shaped hole 1112 and connects the first hinge 11 to the second hinge 12. The structure is simple and the connection is convenient, so that the pin shaft 13 can move in the first arc-shaped hole 1112 and drive the second guide position 121 to rotate relative to the first guide position 111.

[0049] The recessed guide position 1111 can guide the first protrusion 1211 to move so that the angle between the first hinge 11 and the second hinge 12 is reduced or increased, ensuring that the first protrusion 1211 moves along the guiding direction of the recessed guide position 1111, and facilitating the mutual limiting and locking between the first guide position 111 and the second guide position 121; since the first connecting pin 131 is arranged in the first arc-shaped hole 1112, the side wall of the first arc-shaped hole 1112 has a limiting effect on the first connecting pin 131, and the cooperation between the first arc-shaped hole 1112 and the recessed guide position 1111 can make the bending accuracy between the first hinge 11 and the second hinge 12 higher.

[0050] For further information, see Figures 8 to 10 As a specific embodiment of the hinge mechanism 1 provided by the present invention, the recessed guide position 1111 includes a second arc-shaped hole 11111, the first protrusion 1211 is further provided with a second connecting hole 12112, and the pin shaft 13 further includes a second connecting pin 132;

[0051] The second connecting pin 132 passes through the second connecting hole 12112 and the second arc-shaped hole 11111 and is fixed on the second guide position 121, thereby improving the connection strength between the first guide position 111 and the second guide position 121, and reducing the influence of external force impact, wear and other factors on the first connecting pin 131 and the second connecting pin 132, thereby improving the service life of the hinge mechanism 1;

[0052] The movement trajectory of the first connecting pin 131 in the first arc hole 1112 and the movement trajectory of the second connecting pin 132 in the second arc hole 11111 are located on the same arc line, and the first arc hole 1112 guides the first connecting pin 131, and the second arc hole 11111 guides the second connecting pin 132, so that the second arc hole 11111 guides the second guide position 121; at the same time, the first arc hole 1112 and the second arc hole 11111 are approximately arranged along the length direction of the first guide position 111, so compared Compared with other schemes (for example, a first hinge plate and a second hinge plate are respectively arranged at both ends of the hinge in the length direction, a round hole and an arc hole are arranged along the width direction of the first hinge plate, two round holes are arranged along the width direction of the second hinge plate, a pin shaft passes through the round hole of the first hinge plate on one hinge and the corresponding round hole of the second hinge plate on another adjacent hinge, and another pin shaft passes through the round hole of the first hinge plate and the corresponding arc hole of the second hinge plate to hinge two adjacent hinges), the thickness of the hinge mechanism 1 is reduced, thereby reducing the thickness of the LED display screen, which is convenient for users to use.

[0053] For further information, see Figures 8 to 10 As a specific embodiment of the hinge mechanism 1 provided by the present invention, the movement trajectories of the pins at both ends of the first hinge 11 are mirror-symmetrical, which is convenient for increasing the curvature of the multiple hinge mechanisms 1 after being assembled, and avoiding the inconsistent arc opening directions of the first arc hole 1112 and the second arc hole 11111 at both ends of the first hinge 11, resulting in alternating positive and negative bending directions between the multiple assembled hinge mechanisms 1, resulting in the overall curvature of the multiple hinge mechanisms 1 after being assembled is too small.

[0054] Preferably, the first guide positions 111 at both ends of the first hinge 11 are mirror-symmetrical, and the second guide positions 121 at both ends of the second hinge 12 are mirror-symmetrical, so as to facilitate mass production of the first hinge 11 and the second hinge 12 .

[0055] For further information, see Figures 8 to 10As a specific embodiment of the hinge mechanism 1 provided by the present invention, the second guide position 121 also includes a second protrusion 1212, the ends of the first connecting pin 131 and the second connecting pin 132 are both fixed on the second protrusion 1212, and the first arc hole 1112 and the second arc hole 11111 are both located between the first protrusion 1211 and the second protrusion 1212, which facilitates the connection between the first guide position 111 and the second guide position 121, reduces the volume of the hinge mechanism 1, and makes the first guide position 111 and the second guide position 121 more firmly connected; the first arc hole 1112 and the second arc hole 11111 are arranged between the first protrusion 1211 and the second protrusion 1212, which facilitates the first protrusion 1211 and the second protrusion 1212 to limit the first guide position 111, and prevents the first guide position 111 provided with the first arc hole 1112 and the second arc hole 11111 from detaching from the second guide position 121 along the axial direction of the first connecting pin 131.

[0056] Specifically, see Fig.10 The ends of the first connecting pin 131 and the second connecting pin 132 are both provided with threads, and the second protrusion 1212 is provided with a threaded hole. The ends of the first connecting pin 131 and the second connecting pin 132 can be inserted into the threaded hole and threadedly connected with the second protrusion 1212.

[0057] For further information, see Figures 8 to 10 , as a specific embodiment of the hinge mechanism 1 provided by the present invention, the recessed guide position 1111 further includes a guide groove 11112 adapted to the first protrusion, and the first protrusion extends into the guide groove 11112; or

[0058] The recessed guide position 1111 further includes a guide groove 11112 adapted to the second protrusion 1212, and the second protrusion 1212 extends into the guide groove 11112; or

[0059] The recessed guide position 1111 also includes a guide groove 11112 respectively adapted to the first protrusion and the second protrusion 1212, and the first protrusion and the second protrusion 1212 extend into the corresponding guide groove 11112, and the corresponding first protrusion or the second protrusion 1212 is guided and limited by the guide groove 11112, so that the second guide position 121 moves along a fixed trajectory relative to the first guide position 111; the second guide position 121 is double-limited and guided by the second arc hole 11111 and the guide groove 11112, thereby improving the guiding accuracy of the first guide position 111 to the second guide position 121, and avoiding the misalignment of the first guide position 111 relative to the second guide position 121.

[0060] For further information, see Figures 8 to 10As a specific embodiment of the hinge mechanism 1 provided by the present invention, the first guide position 111 also includes a third protrusion 1113 located between the first protrusion 1211 and the second protrusion 1212, and the first arc hole 1112 and the second arc hole 11111 are both arranged on the third protrusion 1113, which reduces the volume of the first guide position 111, reduces the production cost of the first hinge 11, and facilitates the connection between the first guide position 111 and the second guide position 121.

[0061] For further information, see Figure 8 and Fig. 9 As a specific embodiment of the hinge mechanism 1 provided by the present invention, the second arc-shaped hole 11111 is arranged at the bottom of the guide groove 11112 to shorten the length of the first guide position 111, thereby reducing the influence of the first hinge 11 and the second hinge 12 as edges on the overall shape of the assembled multiple hinge mechanisms 1, making the overall shape closer to an arc, and at the same time increasing the bending angle of the first hinge 11 and the second hinge 12.

[0062] See also Figure 1 , Figure 2 and Figure 6 The present invention further provides a box body, comprising a first frame 31, a second frame 32 and the hinge mechanism 1 described in any of the above embodiments, wherein a third guide position 311 is provided on one side of the first frame 31 and is connected to the first guide position 111 or the second guide position 121, and a fourth guide position 321 is provided on one side of the second frame 32 and is connected to the first guide position 111 or the second guide position 121;

[0063] The box body 3 is used for fixedly connecting the display unit 2 .

[0064] Compared with the prior art, the box provided by the present invention has a hinge mechanism 1 that can be bent. Therefore, after the first frame 31 and the second frame 32 are guide-connected to the hinge mechanism 1, the entire box 3 can be bent by bending the guide connection position, so that the user can bend the box 3 according to actual needs, thereby improving the bending effect of the box 3; the third guide position 311 on the first frame 31 is guide-connected to the first guide position 111 or the second guide position 121, and the fourth guide position 321 on the second frame 32 is guide-connected to the first guide position 111 or the second guide position 121. Therefore, the first frame 31 and the second frame 32 are arranged at both ends of the assembled hinge mechanism 1 to serve as the frames of the box 3, which is convenient for the subsequent installation of the box 3 or the assembly of multiple boxes 3, and improves the integrity of the box 3, thereby enhancing the user experience.

[0065] Specifically, the guiding connection between the third guide position 311 and the first guide position 111 or the second guide position 121 and the guiding connection between the fourth guide position 321 and the first guide position 111 or the second guide position 121 are the same as the connecting mode between the first guide position 111 and the second guide position 121 .

[0066] Specifically, a first arc-shaped connecting lock is provided on the first frame 31, and a second arc-shaped connecting lock is provided on the second frame 32, so that two adjacent boxes 3 can be assembled in an arc shape through the first arc-shaped connecting lock and the second arc-shaped connecting lock.

[0067] See also Figures 1 to 6 The present invention further provides an LED display screen, comprising a plurality of display units 2 and the box body 3 described in the above embodiment, wherein all the display units 2 are fixedly connected to the first hinge 11 and the second hinge 12 correspondingly.

[0068] Compared with the prior art, the LED display screen provided by the present invention has all the display units 2 fixedly connected to the first hinge 11 and the second hinge 12 of the box body 3 accordingly. Since the box body 3 can be bent, the LED display screen itself can be bent after the display units 2 are fixedly connected to the box body 3, thereby realizing a change in the curvature of the overall shape of the LED display screen; after a plurality of LED display screens are assembled together, their bending effect is improved, thereby improving the display effect.

[0069] Specifically, see Figure 1 , Figure 7 and Figure 8 A first mounting hole 14 is provided on the first hinge 11 and the second hinge 12, and a second mounting hole 23 is provided on the display unit 2. The first hinge 11 and the display unit 2 and the second hinge 12 and another display unit 2 are fixedly connected by screws passing through the first mounting hole 14 and the second mounting hole 23. The first mounting hole 14 and the second mounting hole 23 are perpendicular to the display surface of the display unit 2, which can prevent the hinge mechanism 1 from blocking the light-emitting surface of the display unit 2.

[0070] Specifically, see Figure 7 The sides of two adjacent display units 2 that are close to each other are inclined from the front to the back of the display unit 2 toward a direction away from each other, so as to facilitate the bending of the LED display screen and avoid the side walls of the display unit 2 interfering with the folding of the adjacent display unit 2.

[0071] Specifically, see Figure 1 , Figure 7 and Figure 8The display unit 2 is provided with a positioning column 24, and the first hinge 11 and the second hinge 12 are both provided with a positioning hole 15 corresponding to the positioning column 24 on the display unit 2. The positioning column 24 can extend into the positioning hole 15 so as to quickly position the display unit 2 on the hinge mechanism 1, thereby improving the assembly efficiency of the LED display screen.

[0072] For further information, see Figure 1 and Figure 2 As a specific embodiment of the LED display screen provided by the present invention, it also includes a rear cover assembly 6 fixed on the display unit 2 and a cable 5 led out from the rear cover assembly 6. The rear cover assembly 6, the cable 5 and the hinge mechanism 1 are all located on the same side of the display unit 2. The rear cover assembly 6 and the cable 5 can support the normal operation of the display unit 2, so that the LED display screen can be normally turned on and off;

[0073] The flat cable 5 is connected to each display unit 2 along the assembly direction of the display unit 2, so that the user can connect the flat cable 5 to the display unit 2 along the same direction on the back side of the display unit 2, thereby providing sufficient operating space for the user to connect the flat cable 5 to the display unit 2, and facilitating the user to continuously operate to connect the flat cable 5 to the display unit 2.

[0074] Specifically, the back cover assembly 6 includes a back cover, a power supply, an adapter board and a system card.

[0075] Specifically, the cable 5 includes a signal line and a power line.

[0076] For further information, see Figure 1 , Figure 7 and Figure 8 , as a specific embodiment of the LED display screen provided by the present invention, it also includes a first limit buckle 21, a second limit buckle 22 and a cable fixing seat 4 arranged on the display unit 2;

[0077] The first limiting buckle 21 on one display unit 2 moves relative to the second limiting buckle 22 on another adjacent display unit 2, so that the first limiting buckle 21 and the second limiting buckle 22 can abut against each other to be clamped, thereby improving the connection strength of the display unit 2, facilitating the transportation of the clamped display unit 2, and facilitating the installation of the clamped multiple display units 2 on the hinge mechanism 1 as a whole. At the same time, the first limiting buckle 21 can abut against the second limiting buckle 22 to limit the size of the bending angle of the display unit 2;

[0078] The cable fixing seat 4 fixes the cable 5 on the display unit 2 to prevent the cable 5 from being placed in a disordered manner and affecting the bending and assembly of the display unit 2 , and also has a waterproof effect.

[0079] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. Articulated mechanism, characterized in that: The display device comprises a first hinge, a second hinge and a pin, wherein the first hinge is used for fixedly connecting one display unit, and the second hinge is used for fixedly connecting another display unit; Both ends of the first hinge in the length direction are provided with a first guide position, and both ends of the second hinge in the length direction are provided with a second guide position corresponding to the first guide position, and the first guide position and the second guide position are movably connected through the pin shaft; The first guide position can guide the second guide position to move so as to reduce or increase the angle between the first hinge and the second hinge; The first guide position includes a concave guide position and a first arc-shaped hole, the second guide position includes a first protrusion, and the pin shaft includes a first connecting pin; The first protrusion is provided with a first connecting hole, and the first connecting pin passes through the first connecting hole and the first arc-shaped hole and connects the first hinge to the second hinge; The recessed guide position can guide the first protrusion to move so as to reduce or increase the angle between the first hinge and the second hinge; The recessed guide position includes a second arc-shaped hole, the first protrusion is also provided with a second connecting hole, and the pin shaft also includes a second connecting pin; The second connecting pin passes through the second connecting hole and the second arc-shaped hole and is fixed on the second guide position; The motion track of the first connecting pin in the first arc-shaped hole and the motion track of the second connecting pin in the second arc-shaped hole are located on the same arc line; The movement trajectories of the pins at both ends of the first hinge are mirror-symmetrical; The second guide position further includes a second protrusion, the ends of the first connecting pin and the second connecting pin are both fixed on the second protrusion, and the first arc-shaped hole and the second arc-shaped hole are both located between the first protrusion and the second protrusion.

2. The hinge mechanism according to claim 1, characterized in that: The recessed guide position further includes a guide groove adapted to the first protrusion or / and the second protrusion, and the first protrusion or / and the second protrusion extends into the corresponding guide groove; The second arc-shaped hole is arranged at the bottom of the guide groove.

3. The hinge mechanism according to claim 1, characterized in that: The first guide position further includes a third protrusion located between the first protrusion and the second protrusion, and the first arc-shaped hole and the second arc-shaped hole are both arranged on the third protrusion.

4. The box body is characterized by: The hinge mechanism comprises a first frame, a second frame and the hinge mechanism according to any one of claims 1 to 3, wherein a third guide position is provided on one side of the first frame and is connected to the first guide position or the second guide position, and a fourth guide position is provided on one side of the second frame and is connected to the first guide position or the second guide position; The box is used for fixedly connecting the display unit. 5.LED display screen, characterized by: It comprises a plurality of display units and the box body as claimed in claim 4, wherein all the display units are fixedly connected to the first hinge and the second hinge correspondingly.

6. The LED display screen according to claim 5, characterized in that: It also includes a back cover assembly fixed on the display unit and a flat cable led out from the back cover assembly, wherein the back cover assembly, the flat cable and the hinge mechanism are all located on the same side of the display unit; The flat cable is connected to each of the display units along an assembling direction of the display units.

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