A locking device for LED display box with adjustable splicing gap and box

Abstract

The present invention belongs to the technical field of LED display, and relates to a locking device of an LED display box with adjustable splicing gap and a box, the locking device comprising a first locking buckle and a threaded top tightening member installed at a first frame position of the box, and a locking rod assembly installed at a second frame position of the box; the locking rod assembly comprises a second locking buckle and a locking rod body, the locking rod body is fixed in the second locking buckle, a top tightening groove is provided at an upper end of the locking rod body, and the upper end of the locking rod body extends out of the second frame; the threaded top tightening member is threadedly matched with the first locking buckle; when the boxes are spliced, the upper end of the locking rod body of one box extends into the first locking buckle of the other box, and when the threaded top tightening member is tightened inwardly, its end portion abuts against the inclined surface of the upper part of the top tightening groove, so that the locking rod body moves upward relative to the threaded top tightening member, and the two boxes are locked together; its beneficial effect is that the splicing gap of the boxes can be fine-tuned by rotating the threaded top tightening member, which solves the technical problem that the existing locking structure is difficult to adjust the splicing gap of the boxes.

Description

Technical Field

[0001] The invention relates to the technical field of LED display, and in particular to a locking device for an LED display box with adjustable splicing gap and a box. Background Art

[0002] Existing LED display screens are mostly installed by means of marbles, connecting pieces or quick locks for assembly and fixation. The assembly gap is mainly controlled by the accuracy of the box size and the professionalism of the workers. The efficiency and effect are very unsatisfactory.

[0003] There are two traditional ways to adjust the gap in assembly: one is to manually adjust the gap, tighten the screws, fix the connecting piece, and maintain the gap. The disadvantage is that the gap cannot be adjusted accurately and it is difficult to adjust again after fixing. The other is to adjust the gap by tightening the quick-lock screws, and fix it after adjusting to the appropriate range. The disadvantage is that the gap can only be adjusted smaller by tightening, and the gap cannot be increased. Since the box has a certain rigidity, there will be a certain rebound tendency after the box is tightened and locked. The tighter it is locked, the smaller the gap between the lamp beads at the edges of the two adjacent boxes may be, or even the lamp beads may be squeezed, forming a white line when lit, and the display effect is not good.

[0004] Therefore, there is an urgent need for a LED display screen locking device that can adjust the size of the box splicing gap and improve the display effect. Summary of the invention

[0005] 1. Technical issues to be resolved

[0006] In view of the above-mentioned shortcomings and deficiencies of the prior art, the present invention provides a locking device and a box body of an LED display box with adjustable splicing gap, which solves the technical problem that the existing LED display screen splicing locking structure is difficult to adjust the splicing gap of the box body.

[0007] (II) Technical solution

[0008] In order to achieve the above object, the main technical solutions adopted by the present invention include:

[0009] The embodiment of the present invention provides a locking device for an LED display box with an adjustable splicing gap, comprising a first lock buckle and a threaded top tightening member installed at a first frame position of the box, and a locking rod assembly installed at a second frame position of the box;

[0010] The locking rod assembly includes a second locking buckle and a locking rod body, the lower end of the locking rod body is inserted into and fixed in the second locking buckle, a tightening groove is arranged on one side of the upper end thereof, and the side wall surface of the tightening groove is an inclined surface, the angle formed by the inclined surface and the side wall of the locking rod body is an obtuse angle, and the upper end of the locking rod body extends out from the second frame;

[0011] The threaded tightening member is disposed in the first locking buckle and cooperates with the first locking buckle thread to contact the tightening groove;

[0012] When splicing the boxes, the upper end of the locking rod body of one box extends into the first locking buckle of the other box. When the threaded tightening piece is tightened inward, its end abuts against the upper inclined surface of the tightening groove, causing the locking rod body to move upward relative to the threaded tightening piece to tighten the relative frames of the two boxes and lock the two boxes together.

[0013] Optionally, the tightening groove includes a groove bottom surface and an inclined surface, and the inclined surface is a curved surface arranged around the groove bottom surface.

[0014] Optionally, the front surfaces of the first frame and the second frame are both provided with lock mounting holes, and the relative positions of the joint surfaces of the two are both provided with lock rod through holes;

[0015] The first lock buckle and the second lock buckle are correspondingly installed in the two lock buckle installation holes, and the lock rod body extends out from the lock rod through hole of the first frame.

[0016] Optionally, the side walls around the threaded tightening member are provided with threads for threadably cooperating with the first screw hole of the first locking buckle. One end face thereof is provided with an operating port for cooperating with a tool, and the other opposite end face is provided with a spherical surface protruding outward for contacting the inclined surface of the tightening groove.

[0017] Optionally, the depth of the tightening groove is greater than or equal to the radius of the locking rod body.

[0018] Optionally, the first lock buckle and the second lock buckle are parallel to each other and perpendicular to the locking rod body.

[0019] Optionally, the second locking buckle is provided with a second screw hole and a locking rod mounting hole which are vertically connected to each other. The locking rod assembly also includes a screw body, the locking rod body is placed in the locking rod mounting hole, the screw body passes through the locking rod body and is threadedly connected to the second screw hole, so that the lower end of the locking rod body is installed in the second locking buckle.

[0020] Optionally, a sealing rubber ring is installed on the outer peripheral side walls of the first lock buckle and the second lock buckle at the inner wall position of the frame of the box body.

[0021] In a second aspect, an embodiment of the present invention provides an LED display box, comprising the aforementioned locking device.

[0022] (III) Beneficial effects

[0023] The beneficial effects of the present invention are:

[0024] 1. A locking device and a box body of an LED display box body with adjustable splicing gap of the present invention. Since the locking device adopts a threaded tightening piece and a tightening groove is arranged at the upper end of a locking rod body, and the side wall surface of the tightening groove is arranged as an inclined surface, when the threaded tightening piece is rotated, it is tightened with the upper part of the tightening groove of the locking rod body, so that the locking rod body moves upward relative to the threaded tightening piece, tightens the two adjacent boxes, and narrows the splicing gap. When the two adjacent boxes are over-locked, the splicing gap of the boxes can be fine-tuned by directly rotating the threaded tightening piece in the opposite direction, and there is no need to unlock the adjacent boxes for adjustment. The operation is simpler and more convenient, which solves the technical problem that the existing LED display screen splicing locking structure is difficult to adjust the splicing gap of the boxes.

[0025] 2. The locking device includes a first lock buckle, a second lock buckle, a locking rod body and a threaded tightening piece. It has a simple structure and can adjust the joint gap of the box body through the threaded tightening piece. It is easy to operate and has low requirements on the experience and professional level of the operator. It has relatively low requirements on the accuracy of the box body size, which saves manpower and material resources and greatly reduces production costs.

[0026] 3. The locking device is suitable for small-pitch LED display cabinets to solve the problem of white or black lines when the LED display is lit due to too small or too large splicing gaps, and the display effect is better.

[0027] 4. By adopting the locking device of the present application, a single person can splice the box body on the front of the screen body and adjust the splicing gap of the box body at the same time, saving manpower and material resources. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a three-dimensional schematic diagram of a locking device of an LED display box with adjustable splicing gap of the present invention and a locking device of embodiment 1 of the box in use;

[0029] Figure 2 It is a schematic diagram of an exploded view of a locking device of an LED display box with adjustable splicing gap and a locking device of Embodiment 1 of the box according to the present invention;

[0030] Figure 3 It is a schematic diagram of a locking device of an LED display box with adjustable splicing gap and an assembly diagram of the locking device of the box;

[0031] Figure 4 It is a schematic diagram of a locking device of an LED display box with adjustable splicing gap and a partial exploded view of the locking device of the box;

[0032] Figure 5 It is a front view schematic diagram of a locking device of an LED display box with adjustable splicing gap of the present invention and a locking device of embodiment 1 of the box in use;

[0033] Figure 6 A locking device for an LED display box with an adjustable splicing gap according to the present invention and a cross-sectional schematic diagram of the locking device in use of Embodiment 1 of the box (along the length direction of the upper and lower frames);

[0034] Figure 7 for Figure 5 Schematic cross-sectional view of the locking device along the AA direction.

[0035] [Description of Reference Numerals]

[0036] 110, first lock buckle; 1101, first screw hole; 1102, locking rod movable hole;

[0037] 120, locking rod body; 1201, tightening groove; 12011, inclined surface; 12012, groove bottom surface;

[0038] 130, screw body;

[0039] 140, second lock buckle; 1401, second screw hole; 1402, lock rod mounting hole;

[0040] 150, threaded fastener; 1501, operating port; 1502, spherical surface;

[0041] 160, Sealing rubber ring;

[0042] 2. First frame; 3. Second frame; 2301. Lock buckle installation hole; 2302. Lock rod through hole; 2303. Installation step;

[0043] 4. Magnetic parts. DETAILED DESCRIPTION

[0044] In order to better explain the present invention and facilitate understanding, the present invention is described in detail below in conjunction with the accompanying drawings through specific embodiments. Figure 1 With reference to the orientation, the direction where the first frame 2 is located is the "upper", the direction where the second frame 3 is located is the "lower", the side where the threaded fastening member 150 of the first frame 2 is located is the "front", and the other side opposite to the first frame 2 is the "back".

[0045] The embodiment of the present invention provides a locking device for an LED display box with an adjustable splicing gap and a box, wherein the locking device comprises a first lock buckle and a threaded top tightening member installed at a first frame position of the box, and a locking rod assembly installed at a second frame position of the box; the locking rod assembly comprises a second lock buckle and a locking rod body, the lower end of the locking rod body is passed through and fixed in the second lock buckle, a top tightening groove is provided on one side of the upper end thereof, and the side wall surface of the top tightening groove is an inclined surface, and the angle formed by the inclined surface and the side wall of the locking rod body is an obtuse angle, and the upper end of the locking rod body extends out from the second frame; the threaded top tightening member is placed in the first lock buckle and cooperates with the first locking buckle thread to contact the tightening groove; when splicing the boxes, the upper end of the locking rod body of one box extends into the first locking buckle of the other box, and when the threaded tightening piece is tightened inward, its end contacts the inclined surface of the upper part of the tightening groove, so that the locking rod body moves upward relative to the threaded tightening piece to tighten the relative frames of the two boxes and lock the two boxes together; compared with the prior art, the splicing gap of the boxes can be fine-tuned by rotating the threaded tightening piece, which is simple and convenient to operate, and solves the technical problem that the existing LED display screen splicing locking structure is difficult to adjust the splicing gap of the boxes.

[0046] In order to better understand the above technical solution, exemplary embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. Although exemplary embodiments of the present invention are shown in the accompanying drawings, it should be understood that the present invention can be implemented in various forms and should not be limited by the embodiments described herein. On the contrary, these embodiments are provided to enable a clearer and more thorough understanding of the present invention and to fully convey the scope of the present invention to those skilled in the art.

[0047] Embodiment 1:

[0048] Reference Figures 1 to 5 , this embodiment provides a locking device for an LED display box with an adjustable splicing gap, which is used to splice two adjacent boxes together.

[0049] See also Figure 1 In this application, for the convenience of distinction, the opposite set of frames of the LED display box are named as the first frame 2 and the second frame 3. The first frame 2 and the second frame 3 are both provided with a lock mounting hole 2301 and a lock rod through hole 2302 that are vertically connected to each other. Among them, the lock mounting hole 2301 is set on the front of the first frame 2 and the second frame 3, and the lock rod through hole 2302 is set on the splicing surface of the first frame 2 and the second frame 3, and the splicing surface is the side that contacts each other when the two boxes are spliced.

[0050] See also Figure 4 and Figure 7The locking device includes a locking rod assembly installed on the second frame 3, a first locking buckle 110 installed on the first frame 2, and a threaded tightening member 150. The locking rod assembly includes a second locking buckle 140 and a locking rod body 120. The lower end of the locking rod body 120 is inserted and fixed in the second locking buckle 140. A tightening groove 1201 is provided on one side of the upper end thereof, and the side wall surface of the tightening groove 1201 is provided as an inclined surface 12011. The angle formed by the inclined surface 12011 and the side wall of the locking rod body 120 is an obtuse angle. Due to the existence of the inclined surface 12011, when the threaded tightening member 150 is tightened inwardly, the locking rod body 120 will move upward relative to the threaded tightening member 150, and tighten the two adjacent boxes. The first locking buckle 110 is provided with a locking rod movable hole 1102 and a first screw hole 1101 that are vertically connected to each other.

[0051] The threaded fastener 150 is installed on the front of the first frame 2, which is convenient for operators to lock the box and adjust the splicing gap. The locking device is directly installed in the first frame 2 and the second frame 3, which helps to reduce the overall thickness of the box, making the box thinner.

[0052] See also Figure 7 When the operator splices the boxes, he first stacks the two boxes up and down, so that the locking rod body 120 extends into the locking rod movable hole 1102 of the first lock buckle 110, and then places the threaded top member 150 in the first screw hole 1101 of the first lock buckle 110, screws the threaded top member 150 and presses it inward, and the threaded top member 150 contacts the upper inclined surface 12011 of the tightening groove 1201, so that the locking rod body 120 moves upward relative to the threaded top member 150, tightens the first frame 2 and the second frame 3, and locks the two boxes together. On the contrary, when the two adjacent boxes are over-locked, the splicing gap of the boxes can be fine-tuned by directly rotating the threaded top member 150 in the opposite direction, without unlocking the adjacent boxes. The operation is simple and convenient, which solves the technical problem that the existing LED display screen splicing locking structure is difficult to adjust the splicing gap of the boxes.

[0053] See also Figure 7 It should be noted that when the spherical surface 1502 of the tightening screw member completely exits the tightening groove 1201, the tightening screw member is still threadedly engaged with the first lock buckle 110 and will not fall off the first lock buckle 110. Therefore, in the operation of adjusting the splicing seam, only the relative position of the tightening screw member in the first lock buckle 110 is changed. When adjusting the splicing gap, there is no need to unlock the box body, which makes the operation simpler, more convenient, and more controllable, eliminating the need to store and reinstall the tightening screw member, and avoiding the loss of the tightening screw member.

[0054] See also Figure 4 and Figure 7In some feasible solutions, the tightening groove 1201 includes a groove bottom surface 12012 and an inclined surface 12011, and the inclined surface 12011 is a curved surface arranged around the groove bottom surface 12012. The angle between the upper and lower side walls of the tightening groove 1201 and the side wall of the locking rod body 120 is greater than the angle between the left and right side walls of the tightening groove 1201 and the side wall of the locking rod body 120, that is, the slope of the upper and lower side walls of the tightening groove 1201 is more gentle. The tightening groove 1201 gradually decreases from the outside to the inside.

[0055] In actual production and application, the tightening groove 1201 is arranged along the axial direction of the locking rod body 120, and is longer in the longitudinal direction, which increases the length of the inclined surface 12011 in contact with the threaded tightening member 150, so that the movable stroke of the locking rod body 120 is larger. The depth of the tightening groove 1201 is ≥ half of the diameter of the locking rod body 120, and ≤ one third of the diameter of the locking rod body 120, which ensures that the threaded tightening member 150 and the tightening groove 1201 cooperate more stably, and the locking device works more reliably. On the other hand, it ensures that the locking rod body 120 has sufficient structural strength and is not easily damaged.

[0056] See also Figure 4 and Figure 7 As a feasible solution, the side walls of the threaded jacking member 150 are provided with threads for threaded cooperation with the first screw hole 1101 of the first lock buckle 110, and one end surface thereof is provided with an operation port 1501 for cooperation with a tool, and the other end surface opposite is provided with a spherical surface 1502 protruding outwards for contacting the inclined surface 12011 of the jacking groove 1201. In the process of adjusting the joint seam of the box body, the contact surface between the threaded jacking member 150 and the jacking groove 1201 is smaller, and the operation is easier. The operation port 1501 is usually a hexagon socket screw hole.

[0057] See also Figure 3 , Figure 4 and Figure 7 In some feasible solutions, the second lock buckle 140 is provided with a second screw hole 1401 and a lock rod installation hole 1402 which are perpendicular to each other, and the lock rod assembly further comprises a screw body 130, the lock rod body 120 is placed in the lock rod installation hole 1402, the screw body 130 passes through the lock rod body 120 and is threadedly connected with the second screw hole 1401, and the lower end of the lock rod body 120 is installed in the second lock buckle 140. The first lock buckle 110 and the second lock buckle 140 are parallel to each other and perpendicular to the lock rod body 120 at the same time.

[0058] It should be pointed out that, first, when two adjacent boxes are spliced ​​and locked together, the threaded tightening member 150 can be rotated in the opposite direction at a small angle to ensure that the boxes are spliced ​​together but the lamp beads at the edges of the two boxes will not squeeze each other; second, after locking, the force direction of the threaded tightening member 150 and the movement direction of the locking rod body 120 are perpendicular to each other.

[0059] In other words, when adjusting the splicing gap of the box, the threaded tightening piece 150 presses the inclined surface 12011 inwardly, so that the locking rod body 120 moves upward relative to the threaded tightening piece 150, and then the locking rod assembly pulls the entire second frame 3 closer to the first frame 2, that is, the second lock buckle 140 pulls the entire second frame 3 closer to the first frame 2; after locking, the force applied to the locking rod body 120 by the threaded tightening piece 150 is in the horizontal direction, and it only presses the locking rod body 120 from the horizontal direction, so that the locking rod body 120 cannot move up and down, instead of directly tightening the locking rod body 120 in the direction of movement of the locking rod body 120. The locking rod body 120 is not subjected to force in its direction of movement, that is, the force of the threaded tightening piece 150 will not be transmitted to the box, and the box will not be deformed by force to cause the problem of the lamp beads at the edge of the box being squeezed.

[0060] Therefore, when using the locking device of the present application, the box body will not be stretched and deformed when the splicing is completed or during the long-term use of the screen body, which will cause the lamp beads to be squeezed. Compared with the existing locking device of the type in which the applied force is in the same direction as the movement direction of the locking rod, it has greater advantages.

[0061] The horizontal direction of the present application refers to a direction perpendicular to the locking rod body 120 .

[0062] After stacking and splicing the two boxes together, the operator can fine-tune the splicing gap of the box by rotating the threaded fastener 150 on the front of the screen body. The size of the splicing gap is easier to adjust, and one person can complete the splicing and fine-tuning of the box splicing gap. The operation is convenient, the requirements for the accuracy of the box size are relatively lower, the production difficulty is reduced, the requirements for the professional level of the operator are relatively lower, and the production cost of the enterprise is greatly reduced.

[0063] See also Figure 2 The first lock buckle 110 and the second lock buckle 140 are cylindrical in shape, and the outer peripheral side walls of the first lock buckle 110 and the second lock buckle 140 are installed with a sealing rubber ring 160 at the inner wall position of the frame of the LED display box to prevent the first lock buckle 110 and the second lock buckle 140 from rotating in the first frame 2 or the second frame 3. In actual application, the shapes of the first lock buckle 110 and the second lock buckle 140 are not limited, and can also be prism-shaped or other shapes.

[0064] See also Figure 2 and Figure 6 In actual operation, in order to facilitate the positioning between the two boxes and help the locking rod body 120 in the second frame 3 to be accurately inserted into the first lock buckle 110 of the first frame 2, a mounting step 2303 is usually provided at the relative position of the first frame 2 and the second frame 3, and a magnetic suction part 4 is installed on the mounting step 2303.

[0065] Small-pitch LED display screens have high requirements on the size of the splicing gap. The locking device is suitable for small-pitch LED display cabinets. It can solve the problem of white or black lines appearing when the LED display screen is lit due to the splicing gap being too small or too large, and the display effect is better.

[0066] Embodiment 2:

[0067] Continue reading Figures 1 to 7 , this embodiment 2 provides an LED display box, including the locking device of embodiment 1.

[0068] In the description of the present invention, it should be understood that 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 technical features indicated. Thus, a feature defined as "first" or "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.

[0069] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0070] In the present invention, unless otherwise clearly specified and limited, when a first feature is “on” or “below” a second feature, it may be that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Moreover, when a first feature is “above”, “above” or “above” a second feature, it may be that the first feature is directly above or obliquely above the second feature, or it may simply mean that the first feature is higher in level than the second feature. When a first feature is “below”, “below” or “below” a second feature, it may be that the first feature is directly below or obliquely below the second feature, or it may simply mean that the first feature is lower in level than the second feature.

[0071] In the description of this specification, the description of the terms "one embodiment", "some embodiments", "embodiment", "example", "specific example" or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, unless they are contradictory.

[0072] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations of the present invention. A person skilled in the art may alter, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. A locking device for an LED display box with adjustable splicing gap, characterized in that: It comprises a first lock buckle (110) and a threaded tightening member (150) installed at a first frame (2) of a box body, and a lock rod assembly installed at a second frame (3) of the box body; The locking rod assembly comprises a second locking buckle (140) and a locking rod body (120); the lower end of the locking rod body (120) is inserted into and fixed in the second locking buckle (140); a tightening groove (1201) is arranged on one side of the upper end thereof; and the side wall surface of the tightening groove (1201) is an inclined surface (12011); the angle formed by the inclined surface (12011) and the side wall of the locking rod body (120) is an obtuse angle; and the upper end of the locking rod body (120) protrudes from the second frame (3); The threaded tightening member (150) is placed in the first locking buckle (110) and is threadably matched with the first locking buckle (110) to contact the tightening groove (1201); When the boxes are spliced ​​together, the upper end of the locking rod body (120) of one box extends into the first locking buckle (110) of the other box, and when the threaded tightening member (150) is tightened inward, its end abuts against the upper inclined surface (12011) of the tightening groove (1201), so that the locking rod body (120) moves upward relative to the threaded tightening member (150) to tighten the relative frames of the two boxes and lock the two boxes together.

2. The locking device of the LED display box with adjustable splicing gap as claimed in claim 1, characterized in that: The tightening groove (1201) comprises a groove bottom surface (12012) and the inclined surface (12011), and the inclined surface (12011) is a curved surface arranged around the groove bottom surface (12012).

3. The locking device of the LED display box with adjustable splicing gap as claimed in claim 2, characterized in that: The front surfaces of the first frame (2) and the second frame (3) are both provided with lock mounting holes (2301), and the relative positions of the joint surfaces of the two are both provided with lock rod through holes (2302); The first lock buckle (110) and the second lock buckle (140) are correspondingly installed in the two lock buckle installation holes (2301), and the lock rod body (120) extends from the lock rod through hole (2302) of the first frame (2).

4. The locking device of the LED display box with adjustable splicing gap as claimed in claim 3, characterized in that: The threaded tightening member (150) is provided with threads on the surrounding side walls for threadedly cooperating with the first screw hole (1101) of the first locking buckle (110); one end face thereof is provided with an operating opening (1501) for cooperating with a tool; the other end face opposite thereto is provided with a spherical surface (1502) protruding outwards for contacting the inclined surface (12011) of the tightening groove (1201).

5. The locking device of the LED display box with adjustable splicing gap as claimed in claim 2, characterized in that: The depth of the tightening groove (1201) is greater than or equal to the radius of the locking rod body (120).

6. The locking device of the LED display box with adjustable splicing gap as claimed in claim 1, characterized in that: The first locking buckle (110) and the second locking buckle (140) are parallel to each other and perpendicular to the locking rod body (120).

7. The locking device of the LED display box with adjustable splicing gap as claimed in claim 6, characterized in that: The second locking buckle (140) is provided with a second screw hole (1401) and a locking rod mounting hole (1402) which are vertically connected to each other. The locking rod assembly also includes a screw body (130). The locking rod body (120) is placed in the locking rod mounting hole (1402). The screw body (130) passes through the locking rod body (120) and is threadedly connected to the second screw hole (1401), so that the lower end of the locking rod body (120) is installed in the second locking buckle (140).

8. The locking device for an LED display box with adjustable splicing gap as claimed in claim 1, characterized in that: The outer peripheral side walls of the first lock buckle (110) and the second lock buckle (140) are provided with sealing rubber rings (160) at the inner wall positions of the frame of the box body.

9. An LED display box, characterized in that: Comprising a locking device as claimed in any one of claims 1 to 8.

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