A foldable LED display screen

Abstract

The invention discloses a foldable LED display screen, belonging to the technical field of LED display screens, and comprising a central shaft column, a central locker movably connected to the central shaft column through a bearing, a first spherical movable joint and a second spherical movable joint slidably connected to the side of the central shaft column, wherein the first spherical movable joint and the second spherical movable joint are respectively arranged on both sides of the central locker, and further comprising an LED display screen group and an extra-long rod. It can effectively reduce the damage to the integrity of the LED display screen during the folding process, reduce the damage to the LED display screen during movement after folding, increase the service life of the LED display screen, and ensure the playback effect of the LED display screen. At the same time, it can effectively reduce the space occupied by the folded LED display screen, realize the portability of the LED display screen, and effectively reduce the burden of the LED display screen when carrying.

Description

Technical Field

[0001] The present invention relates to the technical field of LED display screens, and more particularly to a foldable LED display screen. Background Art

[0002] LED display is a new type of imaging electronic device made of light-emitting diodes arranged in sequence. Due to its high brightness, wide viewing angle, long life and other characteristics, it is widely used in products such as outdoor advertising screens.

[0003] Based on the multiple advantages of LED display screens, the scope of application of LED display screens has become more and more extensive. At the same time, using LED display screens outdoors has also become a common choice for people. At present, LED display screens used outdoors are usually in an integrated style. When used in temporary structures, they have the defect of being difficult to transport due to their size, which is not conducive to rapid disassembly and carrying. At the same time, the integrated LED display screen is prone to damage during transportation.

[0004] Therefore, in view of this, the existing structure is studied and improved to provide a foldable LED display screen, in order to achieve a more practical purpose. Summary of the invention

[0005] In order to solve the above technical problems, the present invention provides a foldable LED display screen, which is achieved by the following specific technical means:

[0006] A foldable LED display screen includes a central shaft column, a central locking device movably connected to the central shaft column through a bearing, a first spherical movable joint and a second spherical movable joint slidably connected to the side of the central shaft column, wherein the first spherical movable joint and the second spherical movable joint are respectively arranged on both sides of the central locking device, and further includes

[0007] An LED display screen group is provided with four groups of panels, namely, panel No. 1, panel No. 2, panel No. 3 and panel No. 4, and the display surfaces of panel No. 1, panel No. 2, panel No. 3 and panel No. 4 are continuous structures, the panel No. 1 and panel No. 2 are respectively fixed to the rotating parts at corresponding positions on the No. 1 spherical movable joint, the panel No. 3 and panel No. 4 are respectively fixed to the rotating parts at corresponding positions on the No. 2 spherical movable joint, and the panel No. 1, panel No. 2, panel No. 3 and panel No. 4 are fixedly provided with connecting joints at the bottoms of the panel No. 1, panel No. 2, panel No. 3 and panel No. 4;

[0008] There are two extra-long rods, which are respectively arranged at the two ends of the central axis and are symmetrically arranged. The extra-long rods are slidably connected with edge lockers, and the No. 1 panel and the No. 4 panel are respectively locked with the edge lockers at the corresponding positions, and the extra-long rods are threadedly connected with double locking sleeves, and one end of the double locking sleeve is threadedly connected and locked with the edge locker.

[0009] Furthermore, the central shaft column and the extra-long rod are both cylindrical structures, and the outer diameters of the cylinders are equal;

[0010] Threaded shafts are fixedly arranged at both ends of the central shaft column.

[0011] Furthermore, a threaded hole is provided at one end of the extra-long rod, and the threaded shaft is threadedly connected to the threaded hole.

[0012] Furthermore, a sleeve is threadedly connected to the threaded shaft, and a cross-shaped handle is fixedly provided at one end of the sleeve away from the central shaft column.

[0013] Furthermore, a large bolt is threadedly connected to the central locker, and the large bolt passes through the connecting joints located on the second panel and the third panel to form a locking between the connecting joint and the central locker;

[0014] A restraining rope is fixedly arranged on the non-threaded end portion of the large bolt, and one end of the restraining rope away from the large bolt is fixed to the side surface of the central locking device.

[0015] Furthermore, the first spherical movable joint includes a sliding ball, which slides on the side of the central shaft column, and a movable shaft is fixedly arranged on the top of the sliding ball, and a first movable foot and a second movable foot are movably connected to the movable shaft through a bearing;

[0016] The first movable foot is fixed to the top end of the first panel, and the second movable foot is fixed to the bottom end of the second panel;

[0017] The structure of the second spherical movable joint is the same as that of the first spherical movable joint.

[0018] Furthermore, a limit plate is fixedly provided at the middle portion of the side surface of the extra-long rod.

[0019] Furthermore, there are two edge lockers, which are respectively distributed on two different extra-long rods. One of the edge lockers is locked with the connecting section below the No. 1 panel, and the other edge locker is locked with the connecting section below the No. 4 panel.

[0020] Furthermore, a threaded sleeve is fixedly provided on the side of the edge position locker, and a threaded section is fixedly provided on the side of the extra-long rod, and the threaded section and the threaded sleeve are synchronously threadedly connected and locked with the double locking sleeve;

[0021] The thread rotation direction and pitch of the thread segment are the same as those of the thread sleeve.

[0022] Furthermore, a counterweight mounting seat is fixedly provided at one end of the super-long rod away from the central axis, and a positioning hole is opened on the counterweight mounting seat.

[0023] Compared with the prior art, the advantages of the present invention are:

[0024] ① In this scheme, when the foldable LED display screen is used, the LED display screen is composed of four panels, and the display parts of the four panels are an integrated structure. When the four panels are folded, the turning points appearing in the folding are fixed on the same straight line formed by the central axis column and the super-long rod, so that the folding range of the four panels can be effectively controlled, thereby effectively reducing the damage to the integrity of the LED display screen during the folding process, and the display part of the folded LED display screen is affected internally, which can further reduce the damage to the LED display screen during movement after folding, thereby increasing the service life of the LED display screen, ensuring the playback effect of the LED display screen, and facilitating rapid unfolding and folding on site, which is conducive to transportation and on-site assembly and use;

[0025] ② In this solution, after the foldable LED display screen is folded, the longer extra-long rods can be removed and replaced with short-distance sleeves for limiting and protecting. In this way, the space occupied by the folded LED display screen can be effectively reduced, the portability of the LED display screen is achieved, and the burden of carrying the LED display screen is effectively reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the three-dimensional structure of the LED display screen of the present invention when it is unfolded;

[0027] Figure 2 This is a schematic diagram of the three-dimensional structure of the LED display screen of the present invention when it is folded;

[0028] Figure 3 The three-dimensional structure of the central axis column and related components of the present invention is shown in FIG. Figure 1 ;

[0029] Figure 4 The three-dimensional structure of the central axis column and related components of the present invention is shown in FIG. Figure 2 ;

[0030] Figure 5 It is a three-dimensional structural schematic diagram of the first spherical movable joint of the present invention;

[0031] Figure 6 It is a three-dimensional structural schematic diagram of the super-long rod and related components of the present invention;

[0032] Figure 7 It is a schematic structural diagram of the double lock sleeve and its related components of the present invention.

[0033] Description of the numbers in the figure:

[0034] 1. Central axis column;

[0035] 101, center lock; 1011, large bolt; 1012, tie rope;

[0036] 102, No. 1 spherical movable joint; 1021, sliding ball; 1022, movable shaft; 1023, No. 1 movable foot; 1024, No. 2 movable foot;

[0037] 103. Spherical activity section No. 2;

[0038] 104, threaded shaft; 1041, sleeve; 1042, cross-shaped handle;

[0039] 2. LED display panel group;

[0040] 201, panel No. 1; 202, panel No. 2; 203, panel No. 3; 204, panel No. 4; 205, connection joint;

[0041] 3. Extra long rods;

[0042] 301, edge position locker; 3011, threaded sleeve;

[0043] 302, double locking sleeve; 303, threaded hole; 304, limit plate; 305, threaded section;

[0044] 306, counterweight mounting seat; 3061, positioning hole. DETAILED DESCRIPTION

[0045] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention; it is obvious that the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments, and all other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making creative work are within the scope of protection of the present invention. Embodiment 1:

[0046] See also Figure 1-7A foldable LED display screen includes a central axis column 1, a central locking device 101 movably connected to the central axis column 1 through a bearing, and a first spherical movable joint 102 and a second spherical movable joint 103 slidably connected to the side of the central axis column 1. The first spherical movable joint 102 and the second spherical movable joint 103 are respectively arranged on both sides of the central locking device 101. When the LED display screen group 2 is folded, the first spherical movable joint 102 and the second spherical movable joint 103 can be used to ensure that the LED display screen group 2 always maintains a connection with the central axis column 1 when it is folded. After the LED display screen group 2 is folded, the central axis column 1 can be used as the main connecting structure of the LED display screen group 2. At this time, by lifting the central axis column 1, the portability of the LED display screen after folding can be achieved.

[0047] See also Figure 1 and Figure 2 Specifically, the LED display screen group 2 is provided with four groups of panels, namely, panel No. 1 201, panel No. 202, panel No. 3 203 and panel No. 4 204, and the display surfaces of panel No. 1 201, panel No. 202, panel No. 3 203 and panel No. 4 204 are continuous structures. When panel No. 1 201, panel No. 202, panel No. 3 203 and panel No. 4 204 are all unfolded, it can ensure that the LED display screen group 2 maintains a good display interface;

[0048] The first panel 201 and the second panel 202 are respectively fixed to the rotating parts at the corresponding positions on the first spherical movable joint 102, and the first spherical movable joint 102 can control the turning centers of the first panel 201 and the second panel 202 when they are folded or unfolded. The third panel 203 and the fourth panel 204 are respectively fixed to the rotating parts at the corresponding positions on the second spherical movable joint 103, and the second spherical movable joint 103 can control the turning centers of the third panel 203 and the fourth panel 204 when they are folded or unfolded. A connecting joint 205 is fixedly arranged below the first panel 201, the second panel 202, the third panel 203 and the fourth panel 204. When the LED display panel group 2 is fully unfolded, the connecting joint 205 can be used to fix the positions of the first panel 201, the second panel 202, the third panel 203 and the fourth panel 204;

[0049] See also Figure 1 and Figure 2 Specifically, the central shaft column 1 and the extra-long rod 3 are both cylindrical structures, and the outer diameters of the cylinders are equal. When the first spherical movable joint 102 and the second spherical movable joint 103 slide from the central shaft column 1 to the extra-long rod 3, the sliding stability can be guaranteed;

[0050] Threaded shafts 104 are fixedly disposed at both ends of the central shaft column 1 .

[0051] See also Figure 1, Figure 2 , Figure 3 , Figure 4 and Figure 5 Specifically, a large bolt 1011 is threadedly connected to the center lock 101, and the large bolt 1011 passes through the connection joint 205 located on the second panel 202 and the third panel 203, so as to lock the connection joint 205 with the center lock 101;

[0052] At this time, by using the large bolt 1011, the connection section 205 can be connected to two connection sections 205 at the same time, and the stability after the connection is ensured.

[0053] The non-threaded end of the large bolt 1011 is fixedly provided with a tie rope 1012, and one end of the tie rope 1012 away from the large bolt 1011 is fixed to the side of the central lock 101. When the LED display panel group 2 is folded, the large bolt 1011 needs to be removed. At this time, the tie rope 1012 is used to limit the position of the large bolt 1011, so as to avoid the loss of the large bolt 1011.

[0054] Specifically, the first spherical movable joint 102 includes a sliding ball 1021, which slides on the side of the central shaft column 1, and a movable shaft 1022 is fixedly provided on the top of the sliding ball 1021. The movable shaft 1022 is movably connected to a first movable foot 1023 and a second movable foot 1024 through a bearing;

[0055] The first movable foot 1023 is fixed to the top of the first panel 201, and the second movable foot 1024 is fixed to the bottom of the second panel 202. The first movable foot 1023 and the second movable foot 1024 can rotate freely around the position of the movable shaft 1022, thereby achieving stability when the first panel 201 and the second panel 202 are folded and rotated;

[0056] The second spherical joint 103 has the same structure as the first spherical joint 102. The second spherical joint 103 works in the same way as the first spherical joint 102, and can achieve the stability of the folding and rotation between the third panel 203 and the fourth panel 204. Embodiment 2:

[0057] Based on the above embodiment 1, further description is given.

[0058] See also Figure 1 , Figure 2 , Figure 4 and Figure 5The threaded shaft 104 is threadedly connected with a sleeve 1041. When the LED display screen group 2 is in a fully folded state, the sleeve 1041 is threadedly connected to the threaded shaft 104. At this time, the sleeve 1041 will limit the positions of the first spherical movable joint 102 and the second spherical movable joint 103 to ensure the stability of the LED display screen group 2 after folding;

[0059] A cross-shaped handle 1042 is fixedly provided at one end of the sleeve 1041 away from the central shaft column 1 . The cross-shaped handle 1042 can increase the convenience of operating the sleeve 1041 . Embodiment three:

[0060] Based on the above-mentioned Embodiment 1 and Embodiment 2, further description is given.

[0061] See also Figure 1 , Figure 2 , Figure 6 and Figure 7 , there are two extra-long rods 3, which are respectively arranged at the two ends of the central axis column 1 and are symmetrically arranged. The extra-long rods 3 are slidably connected with edge lockers 301, and the first panel 201 and the fourth panel 204 are respectively locked with the edge lockers 301 at the corresponding positions, and the extra-long rods 3 are threadedly connected with double lock sleeves 302, and one end of the double lock sleeve 302 is threadedly connected and locked with the edge locker 301. When the LED display screen group 2 is unfolded, the extra-long rod 3 provides an unfolding space for the LED display screen group 2. When the two edge lockers 301 respectively lock the first panel 201 and the fourth panel 204, the LED display screen group 2 can be fully unfolded. Then, the inclination angle of the LED display screen group 2 with the horizontal plane after unfolding can be adjusted. At this time, the angle of the edge locker 301 is locked by the double lock sleeve 302, and the presentation angle of the LED display screen group 2 can be locked synchronously, ensuring that the LED display screen group 2 is used at a better angle.

[0062] Specifically, one end of the extra-long rod 3 is provided with a threaded hole 303, and the threaded shaft 104 is threadedly connected with the threaded hole 303. The threaded connection between the threaded shaft 104 and the threaded hole 303 facilitates the precise docking of the extra-long rod 3 and the central shaft column 1.

[0063] Specifically, a limit plate 304 is fixedly provided at the middle of the side of the extra-long rod 3. The limit plate 304 can limit the range of movement of the first spherical movable joint 102 and the second spherical movable joint 103. At the same time, when the LED display screen group 2 is fully unfolded, the first spherical movable joint 102 and the second spherical movable joint 103 can be prevented from exceeding the range of movement and affecting the balance of the LED display screen group 2.

[0064] Specifically, there are two edge lockers 301, which are respectively distributed on two different extra-long rods 3, one of which is locked with the connection joint 205 located below the first panel 201, and the other is locked with the connection joint 205 located below the fourth panel 204. The two edge lockers 301 lock the first panel 201 and the fourth panel 204 respectively.

[0065] Specifically, a threaded sleeve 3011 is fixedly provided on the side of the edge position locker 301, and a threaded section 305 is fixedly provided on the side of the extra-long rod 3. The threaded section 305 and the threaded sleeve 3011 are synchronously threadedly connected and locked with the double locking sleeve 302;

[0066] The threaded section 305 and the threaded sleeve 3011 have the same threaded rotation direction and pitch. When the double locking sleeve 302 is rotated, the threaded sleeve 3011 and the threaded section 305 can be locked at the same time, which improves the convenience of locking between the LED display panel group 2, the edge position locker 301 and the super-long rod 3.

[0067] Specifically, a counterweight mounting seat 306 is fixedly provided at one end of the extra-long rod 3 away from the central axis column 1, and a positioning hole 3061 is provided on the counterweight mounting seat 306. The counterweight mounting seat 306 can be used to achieve good contact of the entire device with the contact surface, or bolts can be passed through the positioning hole 3061 to further ensure the stability of the counterweight mounting seat 306 and even the entire device.

[0068] Working principle:

[0069] The entire device is composed of a central axis column 1, an LED display group 2 and an extra-long rod 3 as the main body. When the LED display group 2 is in a folded state, the central axis column 1 and the LED display group 2 are retained for use. At this time, the central axis column 1 can be used as the main connecting structure of the LED display group 2. When the central axis column 1 is lifted, the portability of the LED display can be achieved after folding. When the LED display group 2 is in an unfolded state, the two extra-long rods 3 are respectively spliced ​​on both sides of the central axis column 1, and the LED display group 2 is unfolded to achieve the use of the LED display group 2.

[0070] The specific process of unfolding the LED display screen group 2 is as follows: first, remove the sleeves 1041 located at both ends of the central axis column 1, and then, use the matching threaded connection between the threaded shaft 104 and the threaded hole 303 to accurately dock the super-long rod 3 with the central axis column 1. At this time, the No. 1 spherical movable joint 102 and the No. 2 spherical movable joint 103 are pushed synchronously, and the No. 1 spherical movable joint 102 and the No. 2 spherical movable joint 103 move in opposite directions. When the No. 1 spherical movable joint 102 moves, the No. 1 panel 201 and the No. 2 panel 202 are slowly unfolded. When the No. 2 spherical movable joint 103 moves, the No. 3 panel 203 and the No. 4 panel 204 are slowly unfolded. At the same time, when the No. 1 panel 201 and the No. 2 panel 202 move synchronously, the No. 2 panel 202 and the No. 3 panel 203 are slowly unfolded, so that the entire LED display screen group 2 can be fully unfolded.

[0071] When the LED display screen group 2 is fully unfolded, the angles of the two side lockers 301 are adjusted, and the first panel 201 and the fourth panel 204 are locked respectively. Then, the double locking sleeve 302 is rotated to realize the locking between the threaded sleeve 3011 and the threaded section 305, so as to realize the locking between the LED display screen group 2, the side locker 301 and the extra-long rod 3, and ensure the stability of the unfolded LED display screen group 2.

[0072] When the unfolded LED display screen group 2 is used, the counterweight mounting seat 306 is placed on the contact surface, or bolts are passed through the positioning holes 3061 and fixed to the contact surface, so that the use of the entire device can be completed.

[0073] The folding method of the LED display screen group 2 is opposite to the unfolding method of the LED display screen group 2 .

[0074] The above is only a preferred specific implementation of the present invention; however, the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical solution and its improved conception within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A foldable LED display screen, comprising a central shaft column (1), a central locking device (101) movably connected to the central shaft column (1) through a bearing, and a first spherical movable joint (102) and a second spherical movable joint (103) slidably connected to the side of the central shaft column (1), wherein the first spherical movable joint (102) and the second spherical movable joint (103) are respectively arranged on both sides of the central locking device (101), characterized in that: Also includes The LED display screen group (2) is provided with four groups of panels, namely, a first panel (201), a second panel (202), a third panel (203) and a fourth panel (204); the display surfaces of the first panel (201), the second panel (202), the third panel (203) and the fourth panel (204) are of a continuous structure; the first panel (201) and the second panel (202) are respectively fixed to the rotating parts at corresponding positions on the first spherical movable joint (102); the third panel (203) and the fourth panel (204) are respectively fixed to the rotating parts at corresponding positions on the second spherical movable joint (103); and the first panel (201), the second panel (202), the third panel (203) and the fourth panel (204) are all fixedly provided with a connecting joint (205) at a lower portion away from the first spherical movable joint (102) and the second spherical movable joint (103); The extra-long rods (3) are provided in two numbers, and the two extra-long rods (3) are respectively provided at two ends of the central shaft column (1) and are symmetrically arranged. The extra-long rods (3) are slidably connected with side lockers (301). The side lockers (301) are in two numbers and are respectively distributed on two different extra-long rods (3). In a fully unfolded state, one of the side lockers (301) is locked with a connection joint (205) located below the first panel (201), and the other side locker (301) is locked with a connection joint (205) located below the fourth panel (204); the extra-long rods (3) are threadedly connected with a double locking sleeve (302), and one end of the double locking sleeve (302) is threadedly connected with the side locker (301) and locked; When in the fully deployed state, a large bolt (1011) is threadedly connected to the central lock (101), and the large bolt (1011) passes through the connecting joint (205) located on the second panel (202) and the third panel (203), thereby locking the connecting joint (205) and the central lock (101); A restraining rope (1012) is fixedly provided on the non-threaded end portion of the large bolt (1011), and one end of the restraining rope (1012) away from the large bolt (1011) is fixed to the side surface of the central locking device (101).

2. A foldable LED display screen according to claim 1, characterized in that: The central shaft column (1) and the extra-long rod (3) are both cylindrical structures, and the outer diameters of the cylinders are equal; Threaded shafts (104) are fixedly arranged at both ends of the central shaft column (1).

3. A foldable LED display screen according to claim 2, characterized in that: A threaded hole (303) is provided at one end of the extra-long rod (3), and the threaded shaft (104) is threadedly connected to the threaded hole (303).

4. The foldable LED display screen according to claim 3, characterized in that: When in the fully folded state, a sleeve (1041) is threadedly connected to the threaded shaft (104), and a cross-shaped handle (1042) is fixedly provided at one end of the sleeve (1041) away from the central shaft column (1).

5. The foldable LED display screen according to claim 1, characterized in that: The first spherical movable joint (102) comprises a sliding ball (1021) which slides on the side of the central shaft column (1); a movable shaft (1022) is fixedly provided on the top of the sliding ball (1021); and a first movable foot (1023) and a second movable foot (1024) are movably connected to the movable shaft (1022) via a bearing; The first movable foot (1023) is fixed to the top end of the first panel (201), and the second movable foot (1024) is fixed to the bottom end of the second panel (202); The second spherical movable joint (103) has the same structure as the first spherical movable joint (102).

6. The foldable LED display screen according to claim 1, characterized in that: A limiting plate (304) is fixedly disposed in the middle of the side surface of the extra-long rod (3).

7. The foldable LED display screen according to claim 1, characterized in that: A threaded sleeve (3011) is fixedly provided on the side of the edge position locker (301), a threaded section (305) is fixedly provided on the side of the extra-long rod (3), and the threaded section (305) and the threaded sleeve (3011) are synchronously threadedly connected and locked with the double locking sleeve (302); The thread rotation direction and pitch of the thread segment (305) and the thread sleeve (3011) are the same.

8. The foldable LED display screen according to claim 1, characterized in that: A counterweight mounting seat (306) is fixedly provided at one end of the extra-long rod (3) away from the central axis column (1), and a positioning hole (3061) is provided on the counterweight mounting seat (306).

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