LED display screen arc adjusting device and LED display screen

Abstract

The utility model discloses an LED display screen arc adjusting device and an LED display screen, and relates to the technical field of LED display screens, the LED display screen arc adjusting device comprises a lock sleeve assembly and a lock rod assembly, the lock rod assembly is movably embedded in the lock sleeve assembly, and the lock sleeve assembly comprises a handle lock sleeve, an unlocking handle, a movable limiting assembly and a dialing key assembly; the unlocking handle is movably connected to the handle lock sleeve, the movable limiting assembly is movably connected to the unlocking handle and used for locking and unlocking the lock rod assembly, and the shifting key assembly is movably arranged on the handle lock sleeve and used for locking and unlocking the unlocking handle. By the adoption of the arc adjusting device for the LED display screen, operation steps are few, arc adjusting is convenient and fast, and the radian adjusting efficiency is greatly improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of LED display screens, in particular to an LED display screen arc adjusting device and an LED display screen. BACKGROUND

[0002] With the rapid development of the LED industry, arc-shaped LED display screen products are increasingly popular in life, and have a wide application prospect in fields such as stages and advertisements.

[0003] In the related art, the arc-shaped change of the screen body of an LED display screen is controlled by an arc adjusting device, so as to realize seamless splicing of the arc-shaped screen body and arbitrary conversion of the screen body within a certain arc. When adjusting the arc, an unlocking operation is first performed, and then a locking operation is performed when the arc of the screen body is adjusted to a required arc, so as to fix the arc of the LED display screen. However, the unlocking and locking operations of the arc adjusting device of the current LED display screen on the arc of the screen body are not convenient, have a high operation difficulty, and consume a lot of time, resulting in low arc adjusting efficiency. CONTENT OF THE UTILITY MODEL

[0004] The present application aims to provide an LED display screen arc adjusting device and an LED display screen, and solves the problems of high operation difficulty, inconvenience and low efficiency of arc adjusting operations.

[0005] To achieve the above-mentioned purpose, the present application provides an LED display screen arc adjusting device for connecting with a box body of an LED display screen, comprising a lock sleeve assembly and a lock rod assembly, the lock rod assembly is movably embedded in the lock sleeve assembly, and the lock rod assembly is used for telescopic movement relative to the lock sleeve assembly along a first direction;

[0006] The lock sleeve assembly comprises:

[0007] A handle lock sleeve;

[0008] An unlocking handle movably connected to the handle lock sleeve and used for movement relative to the handle lock sleeve along a second direction perpendicular to the first direction;

[0009] A movable limiting assembly movably connected to the unlocking handle and used for limiting the movement of the lock rod assembly when in a first locking position and releasing the limitation on the movement of the lock rod assembly when in a first unlocking position;

[0010] A key assembly movably arranged on the handle lock sleeve and used for limiting the movement of the unlocking handle when in a second locking position and releasing the limitation on the movement of the unlocking handle when in a second unlocking position.

[0011] In some embodiments, the lock sleeve assembly further comprises a limiting sealing plate fixed to the unlocking handle, and a plurality of unlocking holes are arranged on the limiting sealing plate;

[0012] The dial key assembly is provided with a plurality of protrusions, each of which is configured to abut against the limiting cover when the dial key assembly is in the second locked position and to correspond to the unlocking hole when the dial key assembly is in the second unlocked position.

[0013] In some embodiments, the dial key assembly comprises:

[0014] The dial key body is slidably arranged on the side of the handle lock sleeve away from the unlocking handle, and is used to slide relative to the handle lock sleeve in the first direction or a third direction perpendicular to the first direction and the second direction;

[0015] The dial key guide plate is connected with the dial key body and is used to mount the protrusions. The dial key guide plate is provided with a guide protrusion, and the inner wall of the handle lock sleeve is provided with a guide groove. The guide protrusion is embedded in the guide groove, so that the dial key guide plate and the dial key body slide relative to the handle lock sleeve in the first direction or the third direction.

[0016] In some embodiments, the side of the handle lock sleeve away from the unlocking handle is provided with a receiving groove, and the dial key body is slidably arranged in the receiving groove. The depth of the receiving groove is less than the thickness of the dial key body.

[0017] In some embodiments, the handle lock sleeve comprises a handle body and a lock sleeve body arranged at both ends of the handle body. The number of the lock rod assemblies is two. The two lock rod assemblies are respectively slidably fitted in the inner cavities of the lock sleeve bodies, so that the handle lock sleeve and the two lock rod assemblies combine to form a H-shaped structure.

[0018] The two lock sleeve bodies are hingedly connected with lock seats at the ends away from the corresponding lock rod assemblies, and the two lock rod assemblies are hingedly connected with lock seats at the ends away from the corresponding lock sleeve bodies. Each lock seat is used to be connected with the box body of the LED display screen. Each lock seat can rotate around an axis perpendicular to the first direction and the second direction. Each lock seat is fixed to the H-shaped structure by a fastener.

[0019] In some embodiments, the lock rod assembly comprises an adjusting rod body and an adjusting block arranged in the adjusting rod body.

[0020] The movable limiting assembly comprises:

[0021] The movable limiting rod is movably connected with the unlocking handle and is used to move relative to the unlocking handle in a third direction perpendicular to the first direction and the second direction. The movable limiting rod is configured to limit the movement of the lock rod assembly when it is in cooperation with the adjusting block, and to release the lock rod assembly when it is out of cooperation with the adjusting block. The movable limiting rod is provided with a limiting hole.

[0022] The limiting pin sleeve passes through the handle lock sleeve, the unlocking handle and the limiting hole in the first direction, and is used to cooperate with the limiting hole, so that the movable limiting rod can be out of cooperation with the adjusting block when the unlocking handle is pressed.

[0023] In some embodiments, the adjusting block is an adjusting tooth block, the adjusting tooth block is provided with a plurality of tooth grooves distributed at intervals, the movable limiting rod is provided with a limiting protrusion, the limiting protrusion is clamped into the corresponding tooth groove to fix the extension length of the lock rod assembly relative to the handle lock sleeve.

[0024] In some embodiments, the lock sleeve assembly further comprises:

[0025] The first elastic member is arranged to provide an elastic force to the movable limiting rod, so that the movable limiting rod has a tendency to move close to the adjusting block;

[0026] The second elastic member is arranged to provide an elastic force to the unlocking handle, so that the unlocking handle has a tendency to move away from the handle lock sleeve.

[0027] In some embodiments, the handle lock sleeve is provided with a limiting sleeve, the unlocking handle is provided with a limiting column, the limiting column is movably embedded in the limiting sleeve, the limiting sleeve is provided with a connecting block, and the lock sleeve assembly further comprises a limiting screw, the limiting screw is screwed to the connecting block after passing through the limiting column.

[0028] The application also provides an LED display screen comprising a box body and an LED flexible unit, and further comprising the LED display screen arc adjusting device of any one of the above, the LED display screen arc adjusting device is connected with the box body to adjust the arc of the LED flexible unit and fix the arc of the LED flexible unit.

[0029] With respect to the above background technology, the LED display screen arc adjusting device provided by the embodiments of the application comprises a lock sleeve assembly and a lock rod assembly, the lock rod assembly is movably embedded in the lock sleeve assembly; the lock sleeve assembly comprises a handle lock sleeve, an unlocking handle, a movable limiting assembly and a key assembly, wherein the unlocking handle is movably connected with the handle lock sleeve, the movable limiting assembly is movably connected with the unlocking handle, the movable limiting assembly is used for locking and unlocking the lock rod assembly, and the key assembly is movably arranged on the handle lock sleeve, and the key assembly is used for locking and unlocking the unlocking handle.

[0030] During the arc adjusting operation, first, the key assembly is turned to switch the key assembly from the second locking position to the second unlocking position to release the restriction on the movement of the unlocking handle, then the unlocking handle is pressed to move the unlocking handle relative to the handle lock sleeve, so that the movable limiting assembly is switched from the first locking position to the first unlocking position to release the locking of the lock rod assembly, and then the extension and contraction of the lock rod assembly relative to the lock sleeve assembly can be performed, so that the arc of the LED display screen is adjusted to the required arc.

[0031] With this setting, the change of the arc shape of the LED display screen is controlled by adopting the push-type limit release and the left and right telescopic adjustment of the arc chord length, thereby realizing the seamless splicing of the screen arc and the arbitrary conversion of the screen within a certain arc. Not only that, during the arc adjustment operation, only two operating steps, namely, toggle and press, are required to switch the locking rod assembly from the locked state to the unlocked state, which can be completed with one hand, so as to facilitate the subsequent arc adjustment operation. Therefore, the above setting method has fewer operating steps and the arc adjustment is convenient and quick. Whether it is adjusting the inner arc or the outer arc of a single box, the above arc adjustment operation method can be adopted, which greatly improves the efficiency of the arc adjustment. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] In order to more clearly illustrate the technical solutions in the embodiments of the present application or related technologies, the following briefly introduces the drawings required for use in the embodiments or related technical descriptions. Obviously, the drawings described below are merely embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without any creative work.

[0033] Figure 1 This is a schematic diagram of the structure of the arc regulating device for an LED display screen in an embodiment of the present application;

[0034] Figure 2 This is a structural diagram of the LED display arc adjustment device from another angle in an embodiment of the present application;

[0035] Figure 3 for Figure 2 The main view;

[0036] Figure 4 for Figure 1 An exploded view of the locking sleeve assembly in the arc adjustment device of the LED display shown;

[0037] Figure 5 This is a structural diagram of another arc adjustment device for an LED display;

[0038] Figure 6 for Figure 5 Schematic diagram of the matching between the center dial key body and the receiving groove;

[0039] Figure 7 for Figure 1 An exploded view of the locking rod assembly in the arc adjustment device of the LED display shown;

[0040] Figure 8 This is a cross-sectional view of the arc adjustment device for an LED display screen in an embodiment of the present application;

[0041] Figure 9 for Figure 8 A magnified schematic diagram of part A;

[0042] Figure 10 FIG. 2 is a schematic view of the LED display screen in a straight screen state in an embodiment of the present application;

[0043] Figure 11 FIG. 3 is a schematic view of the LED display screen in an inner arc 45-degree state in an embodiment of the present application;

[0044] Figure 12 FIG. 4 is a schematic view of the LED display screen in an outer arc 45-degree state in an embodiment of the present application.

[0045] wherein:

[0046] 10 - lock sleeve assembly, 11 - handle lock sleeve, 111 - handle body, 1111 - guide groove, 1112 - accommodating groove, 11121 - limiting groove, 1113 - movement guide mark, 1114 - unlocking mark, 1115 - locking mark, 1116 - limiting sleeve, 1117 - connecting block, 112 - lock sleeve body, 12 - unlocking handle, 121 - limiting column, 13 - movable limiting rod, 131 - limiting hole, 132 - limiting protrusion, 14 - limiting pin sleeve, 15 - key assembly, 151 - key body, 1511 - limiting bead, 152 - key guide plate, 1521 - guide protrusion, 153 - protruding block, 16 - limiting cover plate, 161 - unlocking hole, 17 - limiting screw, 18 - first elastic member, 19 - second elastic member;

[0047] 20 - lock rod assembly, 21 - adjusting rod body, 22 - adjusting block, 221 - tooth groove;

[0048] 30 - lock seat, 31 - hinged shaft assembly, 32 - fastener;

[0049] 40 - box body;

[0050] 50 - LED flexible unit. DETAILED DESCRIPTION

[0051] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0052] In order to enable those skilled in the art to better understand the present application, the present application will be further described in detail below with reference to the drawings and specific embodiments.

[0053] Please refer to Figure 1 , Figure 2 , Figure 3 , Figure 10 ,Figure 11 and Figure 12 The LED display screen arc adjusting device provided by the embodiment of the application is used for being connected with the box body 40 of the LED display screen to adjust and fix the arc of the LED flexible unit 50. The LED display screen arc adjusting device comprises a lock sleeve assembly 10 and a lock rod assembly 20. The LED flexible unit 50 is composed of a plurality of LED display modules which are hingedly connected with each other. The angle between adjacent LED display modules can be changed through the hinged connection, so that the arc of the LED flexible unit 50 can be changed to realize the flexibility.

[0054] The lock rod assembly 20 is movably embedded in the lock sleeve assembly 10. The lock rod assembly 20 is used for telescopic movement relative to the lock sleeve assembly 10 along a first direction. The length of the lock rod assembly 20 extending relative to the lock sleeve assembly 10 is used for controlling the chord length of the arc where the LED flexible unit 50 is located.

[0055] The lock sleeve assembly 10 comprises a handle lock sleeve 11, an unlocking handle 12, a movable limiting assembly and a key dial assembly 15.

[0056] The unlocking handle 12 is movably connected to the handle lock sleeve 11. The unlocking handle 12 is used for movement relative to the handle lock sleeve 11 along a second direction which is perpendicular to the first direction. The unlocking handle 12 realizes the unlocking operation of the lock rod assembly 20 when the unlocking handle 12 approaches the handle lock sleeve 11.

[0057] The movable limiting assembly is movably connected to the unlocking handle 12. The movable limiting assembly is used for limiting the movement of the lock rod assembly 20 when being in a first locking position and releasing the limitation of the movement of the lock rod assembly 20 when being in a first unlocking position. The first locking position refers to the position where the movable limiting assembly cooperates with the lock rod assembly 20. The first unlocking position refers to the position where the movable limiting assembly is separated from the lock rod assembly 20.

[0058] When the locking of the lock rod assembly 20 needs to be released, the unlocking handle 12 is only needed to be pressed. The unlocking handle 12 moves relative to the handle lock sleeve 11, so that the movable limiting assembly is switched from the first locking position to the first unlocking position.

[0059] The key dial assembly 15 is movably arranged on the handle lock sleeve 11. The key dial assembly 15 is used for sliding relative to the handle lock sleeve 11 along the first direction. The key dial assembly 15 is used for limiting the movement of the unlocking handle 12 when being in a second locking position and releasing the limitation of the movement of the unlocking handle 12 when being in a second unlocking position.

[0060] When the unlocking handle 12 needs to be pressed, the key dial assembly 15 is only needed to be dialed. The key dial assembly 15 is slid from the second locking position to the second unlocking position.

[0061] It should be noted that the above-mentioned first direction can be, for example,Figure 1 The X-axis direction shown, the second direction can be as follows Figure 1 The Y-axis direction is shown.

[0062] During the arc adjustment operation, first, the key assembly 15 is toggled to switch the key assembly 15 from the second locked position to the second unlocked position to release the restriction on the movement of the unlocking handle 12. Then, the unlocking handle 12 is pressed to move the unlocking handle 12 relative to the handle lock sleeve 11, so that the movable limit assembly is switched from the first locked position to the first unlocked position to release the lock of the locking rod assembly 20. After that, the locking rod assembly 20 can be telescopically moved relative to the locking sleeve assembly 10, thereby adjusting the curvature of the LED display to the required curvature.

[0063] After the arc adjustment is completed, the unlocking handle 12 is released to return the unlocking handle 12 to the initial position, and the dial key assembly 15 is turned back to the second locking position, so that the movement of the unlocking handle 12 can be restricted and the curvature of the LED display can be fixed.

[0064] With such a setting, the change of the arc shape of the LED display screen is controlled by adopting the push-type limit release and the left and right telescopic adjustment of the arc chord length, thereby realizing the seamless splicing of the screen arc and the arbitrary conversion of the screen within a certain arc. Not only that, during the arc adjustment operation, only two operating steps, namely, toggling and pressing, are required to switch the locking rod assembly 20 from a locked state to an unlocked state, which can be completed with one hand, so as to facilitate subsequent arc adjustment operations. Therefore, the above-mentioned setting method has fewer operating steps and the arc adjustment is convenient and quick. Whether it is adjusting the inner arc or the outer arc of the single box 40, the above-mentioned arc adjustment operation method can be used, which greatly improves the efficiency of the arc adjustment.

[0065] Please also refer to Figure 4 、 Figure 8 and Figure 9 The lock sleeve assembly 10 also includes a limiting sealing plate 16, which can be fixedly connected to the unlocking handle 12 by a plurality of screws. The limiting sealing plate 16 is provided with a plurality of unlocking holes 161. For example, the number of the unlocking holes 161 is four, and the four unlocking holes 161 are provided on the limiting sealing plate 16 in pairs.

[0066] Correspondingly, a plurality of protrusions 153 are provided on the dial key assembly 15, and the number of the protrusions 153 is also set to four. The four protrusions 153 correspond one-to-one to the four unlocking holes 161. Each protrusion 153 is configured to abut against the limit sealing plate 16 when the dial key assembly 15 is in the second locked position, and to be opposite to the corresponding unlocking hole 161 one-to-one when the dial key assembly 15 is in the second unlocked position.

[0067] That is, when the dial assembly 15 is in the second locking position, the four protrusions 153 are misaligned with the four unlocking holes 161, and the four protrusions 153 abut against the surface of the limiting cover plate 16; when the dial assembly 15 is in the second unlocking position, the four protrusions 153 are respectively moved to be aligned with the four unlocking holes 161, and at this time, the movement of the unlocking handle 12 relative to the handle lock sleeve 11 can be realized under the cooperation of the unlocking hole 161 and the corresponding protrusion 153.

[0068] In some embodiments, the dial assembly 15 comprises a dial body 151 and a dial guide plate 152, wherein the dial body 151 is slidably arranged on the side of the handle lock sleeve 11 away from the unlocking handle 12, and the dial body 151 is used to slide relative to the handle lock sleeve 11 in the first direction; the dial guide plate 152 is connected with the dial body 151 through screws, and each protrusion 153 is mounted on the side of the dial guide plate 152 away from the dial body 151.

[0069] In this way, by dialing the dial body 151 in the first direction, the dial guide plate 152 and the protrusions 153 can be driven to move relative to the handle lock sleeve 11, so that the four protrusions 153 are respectively moved to be aligned with the four unlocking holes 161.

[0070] In order to guide the movement of the dial body 151, the dial guide plate 152 is provided with a guide protrusion 1521, and the inner wall of the handle lock sleeve 11 is provided with a guide groove 1111, the guide protrusion 1521 is embedded in the guide groove 1111, so that the dial guide plate 152 and the dial body 151 can slide relative to the handle lock sleeve 11 in the first direction.

[0071] In the present embodiment, the side of the handle lock sleeve 11 away from the unlocking handle 12 is provided with a containing groove 1112, and the dial body 151 is slidably arranged in the containing groove 1112, the size of the dial body 151 in the sliding direction is smaller than the size of the containing groove 1112 in the sliding direction of the dial body 151, and the depth of the containing groove 1112 is smaller than the thickness of the dial body 151. In this way, the dial body 151 protrudes from the containing groove 1112, which facilitates manual dialing of the dial body 151.

[0072] In addition, in order to facilitate intuitive indication, the lower side of the containing groove 1112 is provided with a movement guide mark 1113 (arrow) of the dial body 151, and the unlocking mark 1114 and the locking mark 1115 are respectively arranged on the two sides of the movement guide mark 1113.

[0073] For example, by turning the dial body 151 to the left, the dial body 151 drives the dial guide plate 152 and the protrusions 153 to move relative to the handle lock sleeve 11 to the second unlocking position, so that the four protrusions 153 are respectively aligned with the four unlocking holes 161 for subsequent unlocking operation. After the arc is adjusted, the dial body 151 is turned to the right to return to the second locking position, so as to limit the movement of the unlocking handle 12 and fix the arc of the LED display screen.

[0074] In some embodiments, the dial body 151 can also be arranged to slide relative to the handle lock sleeve 11 in a third direction perpendicular to the first direction and the second direction. The third direction can be the Z-axis direction as shown. Figure 1

[0075] In this way, by turning the dial body 151 in the third direction, the dial body 151 drives the dial guide plate 152 and the protrusions 153 to move relative to the handle lock sleeve 11, so that the four protrusions 153 are respectively aligned with the four unlocking holes 161.

[0076] Please refer to Figure 5 , by turning the dial body 151 upward, the dial body 151 drives the dial guide plate 152 and the protrusions 153 to move relative to the handle lock sleeve 11 to the second unlocking position, so that the four protrusions 153 are respectively aligned with the four unlocking holes 161 for subsequent unlocking operation.

[0077] Please refer to Figure 6 , to ensure the stability of the dial body 151 in the second locking position and the second unlocking position, two limiting beads 1511 can be arranged at the bottom of the dial body 151, and a spring member is arranged between the limiting bead 1511 and the dial body 151, which provides elastic force to the limiting bead 1511, so that the limiting bead 1511 always has a tendency to move away from the dial body 151. Correspondingly, two limiting grooves 11121 are arranged in the accommodating groove 1112, and the two limiting beads 1511 are respectively matched with the upper and lower limiting grooves 11121.

[0078] In this way, when the dial body 151 is in the unlocking and locking positions, the corresponding limiting beads 1511 are limited to avoid the dial body 151 from shaking.

[0079] In some embodiments, the handle lock sleeve 11 includes a handle body 111 and a lock sleeve body 112 arranged at the upper and lower ends of the handle body 111, and the number of lock rod assemblies 20 is two. The two lock rod assemblies 20 are respectively slidably fitted in the inner cavities of the lock sleeve body 112, so that the handle lock sleeve 11 and the two lock rod assemblies 20 combine to form an I-shaped structure.

[0080] ​In this way, after the restriction on the lock rod assembly 20 is released, the lock rod assembly 20 can be extended or retracted relative to the corresponding lock sleeve body 112, so as to achieve the purpose of arc adjustment.

[0081] It should be noted that the extension and retraction of the lock rod assemblies 20 at the upper and lower ends should be synchronized, so as to ensure the stability of the arc adjustment operation of the LED flexible unit 50.

[0082] Please refer to Figure 7 , the two lock sleeve bodies 112 are away from the end of the corresponding lock rod assembly 20, and the two lock rod assemblies 20 are away from the end of the corresponding lock sleeve body 112. Each lock sleeve body 112 and each lock rod assembly 20 are hingedly connected with a lock seat 30, that is, a total of four lock seats 30 are provided, each lock seat 30 is used to connect with the box body 40 of the LED display screen, each lock seat 30 can rotate around the third direction axis, and each lock seat 30 is fixed to the I-shaped structure through a fastener 32.

[0083] Specifically, the lock seat 30 is hingedly connected to the lock sleeve body 112 or the lock rod assembly 20 through a hinge shaft assembly 31, and the hinge shaft assembly 31 includes a base shaft, a base shaft sleeve and a screw. The axis of the base shaft and the base shaft sleeve is arranged along the third direction, so that the lock seat 30 can rotate relative to the I-shaped structure around the third direction axis, so as to be able to adaptively rotate and adjust according to the actual arc to be adjusted.

[0084] Each lock seat 30 is provided with two locking screws, and the lock seat 30 is locked to the box body 40 of the LED display screen through the two locking screws.

[0085] In some embodiments, the lock rod assembly 20 includes an adjustment rod body 21 and an adjustment block 22 built in the adjustment rod body 21.

[0086] Further, the movable limiting assembly includes a movable limiting rod 13 and a limiting pin sleeve 14, the movable limiting rod 13 is movably connected to the unlocking handle 12, the movable limiting rod 13 is used to move relative to the unlocking handle 12 along the third direction, the movable limiting rod 13 is configured to limit the movement of the lock rod assembly 20 when it is in cooperation with the adjustment block 22, and release the lock rod assembly 20 when it is away from the adjustment block 22, and the movable limiting rod 13 is provided with a limiting hole 131.

[0087] The limiting hole 131 is specifically an inclined guide hole, and the length direction of the inclined guide hole is at a preset angle (such as 45°) with the first direction.

[0088] The limiting pin sleeve 14 passes through the handle lock sleeve 11, the unlocking handle 12 and the limiting hole 131 in the first direction, and is used to cooperate with the limiting hole 131. When the unlocking handle 12 is pressed, the unlocking handle 12 is close to the handle lock sleeve 11. Under the cooperation of the limiting pin sleeve 14 and the limiting hole 131, the movable limiting rod 13 can move in the third direction along with the movement of the unlocking handle 12 in the second direction until it is separated from the adjusting block 22.

[0089] In some embodiments, the adjusting block 22 is an adjusting tooth block, which is provided with a plurality of tooth grooves 221 distributed at intervals. Correspondingly, the movable limiting rod 13 is provided with a limiting protrusion 132, which is clamped into the corresponding tooth groove 221 to fix the extension length of the lock rod assembly 20 relative to the handle lock sleeve 11.

[0090] When the movable limiting rod 13 is raised to the state that the limiting protrusion 132 is clamped into the corresponding tooth groove 221 of the adjusting tooth block, the lock rod assembly 20 can be locked on the lock sleeve body 112. At this time, the extension length of the lock rod assembly 20 relative to the lock sleeve body 112 is determined, and the chord length of the arc where the LED flexible unit 50 is located is determined.

[0091] In order to facilitate the movement connection between the unlocking handle 12 and the handle lock sleeve 11, the handle lock sleeve 11 is provided with a limiting sleeve 1116, and the unlocking handle 12 is provided with a limiting column 121 which is movably embedded in the limiting sleeve 1116. At the same time, the limiting sleeve 1116 is provided with a connecting block 1117, and the lock sleeve assembly 10 further comprises a limiting screw 17 which is screwed into the connecting block 1117 after passing through the limiting column 121.

[0092] In this way, under the nested cooperation of the limiting column 121 and the limiting sleeve 1116, the movement of the unlocking handle 12 relative to the handle lock sleeve 11 can be guided and limited. At the same time, since the limiting screw 17 is connected with the connecting block 1117, the unlocking handle 12 will not be separated from the handle lock sleeve 11, thereby ensuring that the unlocking handle 12 stably moves on the handle lock sleeve 11.

[0093] In addition, the lock sleeve assembly 10 further comprises a first elastic member 18 and a second elastic member 19. Both the first elastic member 18 and the second elastic member 19 are compression springs.

[0094] The two ends of the first elastic member 18 abut against the movable limiting rod 13 and the unlocking handle 12, and the first elastic member 18 is used to provide an elastic force to the movable limiting rod 13, so that the movable limiting rod 13 has a tendency to move close to the adjusting block 22. The two ends of the second elastic member 19 abut against the handle lock sleeve 11 and the unlocking handle 12, and the second elastic member 19 is used to provide an elastic force to the unlocking handle 12, so that the unlocking handle 12 has a tendency to move away from the handle lock sleeve 11.

[0095] It can be understood that the second elastic member 19 is arranged for resetting the unlocking handle 12, so that after the unlocking handle 12 is released, the unlocking handle 12 can automatically return to the position before being pressed, and the first elastic member 18 is arranged for resetting the movable limiting rod 13, so that after the unlocking handle 12 is reset, the movable limiting rod 13 can be moved upward under the elastic force of the first elastic member 18, so as to restore the cooperation effect with the adjusting tooth block.

[0096] Please refer to Figure 10 The LED display screen provided in the application comprises a box body 40 and an LED flexible unit 50, and further comprises the LED display screen arc adjusting device described in the above embodiments, which is connected with the box body 40 to adjust and fix the arc of the LED flexible unit 50.

[0097] Specifically, the box body 40 can comprise a left side frame assembly and a right side frame assembly, and the number of the LED display screen arc adjusting devices is also two, which are a left side LED display screen arc adjusting device and a right side LED display screen arc adjusting device. The left and right ends of the LED flexible unit 50 are connected with the left side frame assembly and the right side frame assembly respectively. One end of the left side LED display screen arc adjusting device is connected with the left side frame assembly through the lock seat 30, and the other end can be connected with the middle control box assembly in the middle through the lock seat 30. One end of the right side LED display screen arc adjusting device is connected with the right side frame assembly through the lock seat 30, and the other end can be connected with the middle control box assembly in the middle through the lock seat 30.

[0098] Working principle: first, install the two LED display screen arc adjusting devices on the box body 40, hold the lock sleeve assembly 10 tightly with one hand, and only need to perform two operation steps of turning and pressing to switch the lock rod assembly 20 from the locked state to the unlocked state during the arc adjusting operation. Thus, the movable limiting rod 13 can move up and down in the predetermined track through the cooperation of the limiting pin sleeve 14 and the limiting hole 131, to realize the unlocking or locking of the forward and backward movement of the lock rod assembly 20, so as to realize the inner arc and outer arc adjustment of the single box body 40.

[0099] The application adopts the characteristics of a circular arc, adopts a way of changing the chord length to control the change of the arc shape of the screen body, so as to realize the arbitrary conversion of the screen body within a certain arc, realize the seamless splicing of the arc shape of the screen body, and specifically realize the single box body S arc surface, the maximum inner arc 45 degrees (as shown in Figure 11 ) of the single box body 40, and the maximum outer arc 45 degrees (as shown in Figure 12 ) of the single box body 40, so that the arc surface of the screen body is more natural and the transition is uniform and delicate, thereby improving the arc display effect.

[0100] In addition, when the arc adjusting operation is performed, the lock rod assembly 20 can be switched from the locked state to the unlocked state by only two operation steps of dialing and pressing, and the subsequent arc adjusting operation can be completed by single-handed operation. With the above setting mode, the operation steps are less, the arc adjusting is convenient and fast, and whether the single cabinet 40 is used to adjust the inner arc or the outer arc, the above arc adjusting operation mode can be used to achieve, which greatly improves the efficiency of the arc adjusting.

[0101] It should be noted that in the present specification, the relational terms such as first and second are used only to differentiate one entity from another, without necessarily requiring or implying any such actual relationship or order between such entities.

[0102] The LED display screen arc adjusting device and the LED display screen provided by the present application are described in detail above. The principles and implementation modes of the present application are described by applying specific examples in the present text, and the above example descriptions are only used to help understand the scheme of the present application and its core idea. It should be pointed out that for ordinary skilled persons in the technical field, some improvements and modifications can be made to the present application without departing from the principles of the present application, and these improvements and modifications also fall within the protection scope of the present application.

Claims

1. An arc adjusting device for LED display screen, used for connecting with the box body of LED display screen, characterized in that, The lock sleeve assembly comprises a lock sleeve and a lock handle movably connected to the lock sleeve and used to move relative to the lock sleeve in a second direction perpendicular to the first direction; The lock sleeve assembly comprises: a lock sleeve; a lock handle movably connected to the lock sleeve and used to move relative to the lock sleeve in a second direction perpendicular to the first direction; a movable limiting assembly movably connected to the lock handle and used to limit the movement of the lock rod assembly when in a first locking position and release the limitation on the movement of the lock rod assembly when in a first unlocking position; a key assembly movably arranged on the lock sleeve and used to limit the movement of the lock handle when in a second locking position and release the limitation on the movement of the lock handle when in a second unlocking position.

2. The LED display screen dimming device of claim 1, wherein, The lock sleeve assembly further comprises a limiting cover plate fixed to the lock handle, and a plurality of unlocking holes are arranged on the limiting cover plate; A plurality of protrusions are arranged on the key assembly, and each protrusion is configured to abut against the limiting cover plate when the key assembly is in the second locking position and correspond to the unlocking hole when the key assembly is in the second unlocking position.

3. The LED display screen arc adjusting device of claim 2, wherein, The key assembly comprises: a key body slidably arranged on a side of the lock sleeve away from the lock handle and used to slide relative to the lock sleeve in the first direction or a third direction perpendicular to both the first direction and the second direction; a key guide plate connected to the key body and used to mount the protrusions, wherein the key guide plate is provided with a guide protrusion, an inner wall of the lock sleeve is provided with a guide groove, and the guide protrusion is embedded in the guide groove, so that the key guide plate and the key body slide relative to the lock sleeve in the first direction or the third direction.

4. The LED display screen dimming device of claim 3, wherein, A receiving groove is arranged on the side of the lock sleeve away from the lock handle, and the key body is slidably arranged in the receiving groove, wherein the depth of the receiving groove is less than the thickness of the key body.

5. The LED display screen dimming device of claim 1, wherein, The lock sleeve comprises a handle body and a lock sleeve body arranged at both ends of the handle body, the number of the lock rod assemblies is two, and the two lock rod assemblies are respectively slidably fitted in the inner cavities of the lock sleeve bodies, so that the lock sleeve and the two lock rod assemblies combine to form an I-shaped structure; One end of each of the two lock sleeve bodies away from the corresponding lock rod assembly and one end of each of the two lock rod assemblies away from the corresponding lock sleeve body are hingedly connected with a lock seat, each lock seat is used to be connected with a box body of an LED display screen, each lock seat can rotate about an axis perpendicular to both the first direction and the second direction, and each lock seat is fixed to the I-shaped structure by a fastener.

6. The LED display screen dimming device of claim 1, wherein, The lock rod assembly comprises an adjusting rod body and an adjusting block arranged in the adjusting rod body. The movable limiting assembly comprises: An activity limiting rod movably connected to the unlocking handle and configured to move relative to the unlocking handle along a third direction perpendicular to the first direction and the second direction, the activity limiting rod configured to limit movement of the lock rod assembly when in cooperation with the adjusting block and release the lock rod assembly when out of cooperation with the adjusting block, the activity limiting rod provided with a limiting hole; A limiting pin sleeve passing through the handle lock sleeve, the unlocking handle and the limiting hole along the first direction, configured to cooperate with the limiting hole so that the activity limiting rod can be out of cooperation with the adjusting block when the unlocking handle is pressed.

7. The LED display screen arc adjusting device of claim 6, wherein, The adjusting block is an adjusting tooth block provided with a plurality of spaced tooth grooves, the activity limiting rod is provided with a limiting protrusion, and the limiting protrusion is clamped into the corresponding tooth groove to fix the extension length of the lock rod assembly relative to the handle lock sleeve.

8. The LED display screen dimming device of claim 6, wherein, The lock sleeve assembly further comprises: A first elastic member, two ends of the first elastic member abutting against the activity limiting rod and the unlocking handle, the first elastic member configured to provide an elastic force to the activity limiting rod so that the activity limiting rod has a tendency to move close to the adjusting block; A second elastic member, two ends of the second elastic member abutting against the handle lock sleeve and the unlocking handle, the second elastic member configured to provide an elastic force to the unlocking handle so that the unlocking handle has a tendency to move away from the handle lock sleeve.

9. The LED display screen dimming device of claim 1, wherein, The handle lock sleeve is provided with a limiting sleeve, the unlocking handle is provided with a limiting column, the limiting column is movably embedded in the limiting sleeve, the limiting sleeve is provided with a connecting block, and the lock sleeve assembly further comprises a limiting screw, the limiting screw being threadedly connected to the connecting block after passing through the limiting column.

10. An LED display screen comprising a cabinet and an LED flexible unit, characterized in that, Further comprising the LED display screen arc adjusting device according to any one of claims 1-9, the LED display screen arc adjusting device being connected with the box body to adjust and fix the arc of the LED flexible unit. An activity limiting rod movably connected to the unlocking handle and configured to move relative to the unlocking handle along a third direction perpendicular to the first direction and the second direction, the activity limiting rod configured to limit movement of the lock rod assembly when in cooperation with the adjusting block and release the lock rod assembly when out of cooperation with the adjusting block, the activity limiting rod provided with a limiting hole; A limiting pin sleeve passing through the handle lock sleeve, the unlocking handle and the limiting hole along the first direction, configured to cooperate with the limiting hole so that the activity limiting rod can be out of cooperation with the adjusting block when the unlocking handle is pressed. The adjusting block is an adjusting tooth block provided with a plurality of spaced tooth grooves, the activity limiting rod is provided with a limiting protrusion, and the limiting protrusion is clamped into the corresponding tooth groove to fix the extension length of the lock rod assembly relative to the handle lock sleeve. The lock sleeve assembly further comprises: A first elastic member, two ends of the first elastic member abutting against the activity limiting rod and the unlocking handle, the first elastic member configured to provide an elastic force to the activity limiting rod so that the activity limiting rod has a tendency to move close to the adjusting block; A second elastic member, two ends of the second elastic member abutting against the handle lock sleeve and the unlocking handle, the second elastic member configured to provide an elastic force to the unlocking handle so that the unlocking handle has a tendency to move away from the handle lock sleeve. The handle lock sleeve is provided with a limiting sleeve, the unlocking handle is provided with a limiting column, the limiting column is movably embedded in the limiting sleeve, the limiting sleeve is provided with a connecting block, and the lock sleeve assembly further comprises a limiting screw, the limiting screw being threadedly connected to the connecting block after passing through the limiting column. Further comprising the LED display screen arc adjusting device according to any one of claims 1-9, the LED display screen arc adjusting device being connected with the box body to adjust and fix the arc of the LED flexible unit.

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