CN109210343B - Triaxial connecting piece for mirror-face backdrop LED display screen - Google Patents
Triaxial connecting piece for mirror-face backdrop LED display screen Download PDFInfo
- Publication number
- CN109210343B CN109210343B CN201811298364.7A CN201811298364A CN109210343B CN 109210343 B CN109210343 B CN 109210343B CN 201811298364 A CN201811298364 A CN 201811298364A CN 109210343 B CN109210343 B CN 109210343B
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- cover plate
- led display
- connecting piece
- positive
- adjusting device
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16M—FRAMES, CASINGS OR BEDS OF ENGINES, MACHINES OR APPARATUS, NOT SPECIFIC TO ENGINES, MACHINES OR APPARATUS PROVIDED FOR ELSEWHERE; STANDS; SUPPORTS
- F16M11/00—Stands or trestles as supports for apparatus or articles placed thereon Stands for scientific apparatus such as gravitational force meters
- F16M11/20—Undercarriages with or without wheels
- F16M11/24—Undercarriages with or without wheels changeable in height or length of legs, also for transport only, e.g. by means of tubes screwed into each other
- F16M11/26—Undercarriages with or without wheels changeable in height or length of legs, also for transport only, e.g. by means of tubes screwed into each other by telescoping, with or without folding
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16M—FRAMES, CASINGS OR BEDS OF ENGINES, MACHINES OR APPARATUS, NOT SPECIFIC TO ENGINES, MACHINES OR APPARATUS PROVIDED FOR ELSEWHERE; STANDS; SUPPORTS
- F16M11/00—Stands or trestles as supports for apparatus or articles placed thereon Stands for scientific apparatus such as gravitational force meters
- F16M11/02—Heads
- F16M11/04—Means for attachment of apparatus; Means allowing adjustment of the apparatus relatively to the stand
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
- G09F9/00—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements
- G09F9/30—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements
- G09F9/33—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements being semiconductor devices, e.g. diodes
Abstract
The invention relates to a triaxial connector for a mirror-face backdrop LED display screen. Comprising the following steps: first connecting piece, second connecting piece, Z axle adjusting device, upper cover plate, well apron and lower apron, upper cover plate and well apron are connected through adjustable coupling assembling, well apron bottom is equipped with well lid attach fitting, lower apron top surface is equipped with lower lid attach fitting, well lid attach fitting and lower lid attach fitting are stretched into respectively at Z axle adjusting device both ends, well lid attach fitting and Z axle adjusting device are passed to first connecting piece level, second connecting piece perpendicular to first connecting piece level passes lower lid attach fitting and Z axle adjusting device. According to the invention, the three-axis connector can be fixedly connected with the LED display parts on different planes by arranging the Z-axis adjusting device, and the three-axis connector can be bonded and fixed with the LED display parts with different angles by the cooperation of the first connecting piece and the second connecting piece.
Description
Technical Field
The invention relates to the technical field of auxiliary tools of mirror-face backdrop LED display screens, in particular to a triaxial connecting piece for a mirror-face backdrop LED display screen.
Background
The current application range of the mirror face backdrop LED display screen is wider and wider, the requirement on the precision of a connecting piece is extremely high due to extremely high requirement on the flatness of the mirror face backdrop LED display screen, and the conventional connector cannot meet the requirement due to the fact that the distance from an LED display part to a cantilever is not completely consistent and is possibly in a certain angle due to the installation reason or the manufacturing reason due to the limitation of factors such as the structural precision error of the cantilever above the mirror face backdrop LED display screen, the field installation condition and the like.
Furthermore, the line of the mirror-face backdrop LED display screen can sink in the middle and rise at the corners after long-time use, so that the whole mirror-face backdrop LED display screen is deformed, and no better method for solving the problem exists in the market at present.
Disclosure of Invention
The invention aims to overcome the defects and the defects of the prior art and provide the triaxial connector which has a simple structure and high reliability and can be used for fixedly mounting the mirror surface backdrop LED display screen at different heights and different angles.
The aim of the invention is realized by the following technical scheme: a triaxial connector for a mirrored backdrop LED display screen, the triaxial connector for a mirrored backdrop LED display screen comprising: first connecting piece, second connecting piece, Z axle adjusting device, upper cover plate, well apron and lower apron, upper cover plate and well apron are connected through adjustable coupling assembling, well apron bottom is equipped with well lid attach fitting, lower apron top surface is equipped with lower lid attach fitting, well lid attach fitting and lower lid attach fitting are stretched into respectively at Z axle adjusting device both ends, first connecting piece level passes well lid attach fitting and Z axle adjusting device with well lid attach fitting and Z axle adjusting device swing joint, second connecting piece perpendicular to first connecting piece level passes lower lid attach fitting and Z axle adjusting device with lower lid attach fitting and Z axle adjusting device swing joint, lower apron and LED display fixed connection.
Specifically, the Z-axis adjusting device includes: the two ends of the positive and negative tooth stud are respectively in threaded connection with the upper swing bolt and the lower swing bolt, the first connecting piece horizontally penetrates through the middle cover connecting joint and the swing joint of the upper swing bolt to movably connect the middle cover connecting joint and the upper swing bolt, and the second connecting piece vertically penetrates through the lower cover connecting joint and the swing joint of the lower swing bolt to movably connect the lower cover connecting joint and the lower swing bolt.
Specifically, the positive and negative tooth stud is a hollow stud, the upper end of the positive and negative tooth stud is provided with a positive threaded hole, and the lower end of the positive and negative tooth stud is provided with a negative threaded hole.
Specifically, two opposite side surfaces of the positive and negative tooth stud are provided with open grooves, the inner side surfaces of the two open grooves are parallel to each other, a window is formed on the inner side surface, and the window is communicated with the hollow part of the positive and negative tooth stud.
Specifically, two ends of the positive and negative tooth stud are respectively provided with an upper fastening screw and a lower fastening screw, the upper fastening screw passes through the positive and negative tooth stud to prop against the upper movable joint bolt, and the lower fastening screw passes through the positive and negative tooth stud to prop against the lower movable joint bolt.
Specifically, the triaxial connecting piece for the mirror backdrop LED display screen is further provided with a shear column, and the shear column sequentially penetrates through the upper cover plate, the middle cover plate and the lower cover plate, and the end part of the shear column abuts against the LED display part.
Specifically, the shear column is also provided with a locating pin.
Specifically, the upper cover plate, the middle cover plate and the lower cover plate are respectively provided with a through hole for the shear column to pass through, and the diameters of the through holes in the upper cover plate, the middle cover plate and the lower cover plate are sequentially increased.
Specifically, the lower bottom surface of the upper cover plate is provided with a containing groove for containing the display screen installation cantilever beam.
Specifically, the lower cover plate is provided with a strip-shaped hole and a fixing bolt, the lower cover plate penetrates through the fixing bolt and is fixedly connected with the LED display part, and the adjustable connecting component is a bolt-matched nut adjustable component.
Compared with the prior art, the invention has the following advantages:
(1) According to the invention, the three-axis connector can be fixedly connected with the LED display parts on different planes through the Z-axis adjusting device, the three-axis connector can be attached and fixed with the LED display parts with different angles through the cooperation of the first connecting piece and the second connecting piece, and when the mounting structure is subjected to fatigue deformation due to long-time stress, the first connecting piece and the second connecting piece are matched with the Z-axis adjusting device, so that the flatness of the LED display parts can be adjusted secondarily.
(2) The Z-axis adjusting device can keep good rigidity under the effect of ensuring flexible adjustment by arranging the shear column, and can ensure that the whole Z-axis adjusting device can be lengthened/shortened under the condition that the upper movable joint bolt and the lower movable joint bolt are kept static when the positive and negative tooth studs are selected by adopting the positive and negative tooth studs, so that the whole Z-axis adjusting device has the advantages of simple whole structure, low cost, convenient maintenance, high reliability and large-scale popularization and application.
Drawings
Fig. 1 is a front view of a triaxial connector according to the present invention.
Fig. 2 is a left side view of the triaxial connector of the present invention.
Fig. 3 is an isometric view of a triaxial connector of the present invention.
Detailed Description
The present invention will be described in further detail with reference to examples and drawings, but embodiments of the present invention are not limited thereto.
As shown in fig. 1 to 3, the object of the present invention is achieved by the following technical solutions: a triaxial connector for a mirrored backdrop LED display screen, the triaxial connector for a mirrored backdrop LED display screen comprising: the LED display device comprises a first connecting piece 1, a second connecting piece 2, a Z-axis adjusting device 3, an upper cover plate 4, a middle cover plate 5 and a lower cover plate 6, wherein the upper cover plate 4 and the middle cover plate 5 are connected through an adjustable connecting assembly 11, a middle cover connecting joint 51 is arranged at the bottom of the middle cover plate 5, a lower cover connecting joint 52 is arranged on the top surface of the lower cover plate 6, two ends of the Z-axis adjusting device 3 respectively extend into the middle cover connecting joint 51 and the lower cover connecting joint 52, the first connecting piece 1 horizontally penetrates through the middle cover connecting joint 51 and the Z-axis adjusting device 3 to movably connect the middle cover connecting joint 51 with the Z-axis adjusting device 3, the second connecting piece 2 horizontally penetrates through the lower cover connecting joint 52 and the Z-axis adjusting device 3 perpendicular to the first connecting piece 1 to movably connect the lower cover connecting joint 52 with the Z-axis adjusting device 3, the lower cover plate 6 is fixedly connected with an LED display part 7, and the lower cover plate 6 is fixedly connected with the LED display part 7 through a fixing bolt 10. In this embodiment, the upper cover plate 4 and the middle cover plate 5 are connected by a bolt and a nut, and the lower cover plate 6 may be fastened by other means, such as a clamping connection, capable of fixing the LED display unit 7.
Specifically, the Z-axis adjusting device 3 includes: the two ends of the positive and negative tooth studs 33 are respectively in threaded connection with the upper and lower movable joint bolts 31 and 32, the first connecting piece 1 horizontally penetrates through the middle cover connecting joint 51 and the movable joint of the upper movable joint bolt 31 to movably connect the middle cover connecting joint 51 with the upper movable joint bolt 31, and the second connecting piece 2 vertically penetrates through the lower cover connecting joint 52 and the movable joint of the lower movable joint bolt 32 to movably connect the lower cover connecting joint 52 with the lower movable joint bolt 32. The lower cover plate 6 can be inclined by a certain angle through the dislocation mutually perpendicular arrangement of the first connecting piece 1 and the second connecting piece 2, and when the LED display part 7 or the cantilever beam is inclined or deformed to a certain degree due to installation or manufacturing, the first connecting piece 1 and the second connecting piece 2 correspondingly rotate, so that the lower cover plate 6 can be completely attached to the LED display part 7. When the mounting structure is subjected to fatigue deformation due to long-time stress, the first connecting piece 1 and the second connecting piece 2 are matched with the Z-axis adjusting device 3, so that the flatness of the triaxial connector can be automatically adjusted for the second time. The Z-axis adjusting device 3 is configured such that both ends of the positive and negative threaded studs 33 are respectively screwed with the upper and lower swing bolts 31 and 32, so that the positive and negative threaded studs 33 can be rotated while the upper and lower swing bolts 31 and 32 remain stationary, and the positive and negative threaded studs 33 can be extended/extended, thereby playing a role in adjusting the length of the triaxial connector.
Specifically, the positive and negative threaded studs 33 are hollow studs, positive threaded holes are formed in the upper ends of the positive and negative threaded studs 33, and counter threaded holes are formed in the lower ends of the positive and negative threaded studs 33. The adjustment of the positive and negative tooth stud 33 has the advantages of simple structure, higher adjustment precision and the like, in the embodiment, the upper end of the positive and negative tooth stud 33 is a positive threaded hole, the lower end of the positive and negative tooth stud 33 is a reverse threaded hole, when the positive and negative tooth stud 33 rotates anticlockwise, the upper movable joint bolt 31 and the lower movable joint bolt 32 extend into the positive and negative tooth stud 33, the triaxial connector is integrally shortened, when the positive and negative tooth stud 33 rotates clockwise, the upper movable joint bolt 31 and the lower movable joint bolt 32 extend out of the positive and negative tooth stud 33, and the triaxial connector is integrally lengthened. Of course, in another embodiment, the upper end of the positive-tooth stud 33 may be a reverse threaded hole, and the lower end of the positive-tooth stud 33 may be a positive threaded hole, so long as the positive-tooth stud 33 can be extended or shortened by rotating the Z-axis adjusting device 3.
Specifically, two opposite sides of the positive and negative tooth stud 33 are provided with open slots, inner sides 331 of the two open slots are parallel to each other, a window is formed on the inner side 331, the window is communicated with the hollow portion of the positive and negative tooth stud 33, and anti-slip teeth are arranged on the inner side 331. Through setting up the medial surface 331 that parallels and being equipped with the antiskid tooth on the medial surface 331 and can adjust positive and negative tooth double-screw bolt 33 through the adjustable spanner, the antiskid tooth can make the adjustable spanner more laborsaving when adjusting, be formed with the window through medial surface 331 and just can see the volume of stretching into in positive and negative tooth double-screw bolt 33 of last movable joint bolt 31 and lower movable joint bolt 32 of regulation in the outside, can prevent that last movable joint bolt 31 and lower movable joint bolt 32 from contacting each other in positive and negative tooth double-screw bolt 33 and causing the damage of positive and negative tooth double-screw bolt 33, also can prevent positive and negative tooth double-screw bolt 33 from screwing out the excessive movable joint bolt 31 and lower movable joint bolt 32 and leading to last movable joint bolt 31 and lower movable joint bolt 32 and positive and negative tooth double-screw bolt 33 separation and drop.
Specifically, the two ends of the positive and negative threaded stud 33 are respectively provided with an upper fastening screw 332 and a lower fastening screw 333, the upper fastening screw 332 passes through the positive and negative threaded stud 33 to abut against the upper swing bolt 31, and the lower fastening screw 333 passes through the positive and negative threaded stud 33 to abut against the lower swing bolt 32. By fixing the orthodontic stud 33 with the upper and lower fastening screws 332 and 333, it is possible to ensure that the orthodontic stud 33 does not rotate by the environmental factor after the adjustment is completed.
Specifically, the triaxial connecting piece for the mirror backdrop LED display screen is further provided with a shear column 8, and the shear column 8 sequentially penetrates through the upper cover plate 4, the middle cover plate 5 and the lower cover plate 6, and the end part of the shear column abuts against the LED display part 7. By providing the shear column 8, the triaxial connector can maintain good rigidity under the flexible adjustment, and the shear influence of the LED display portion 7 can be resisted. The shearing column 8 is propped against the LED display part 7, so that the LED display part 7 cannot deform, and the service life of the LED display part 7 is prolonged. When the lower cover plate 6 is fixedly connected with the LED display part 7, the shear column 8 butts against the LED display part 7, and as the LED display part 7 is provided with a plurality of groups of triaxial connectors, the distance from the LED display part 7 to the upper cover plate 4 is constant as a whole, the locating pin 81 on the shear column 8 butts against the upper cover plate 4, and the shear column 8 butts against the lower cover plate 6, so that the gap between the upper cover plate 4 and the middle cover plate 5 is regulated through the adjustable connecting component 11, the upper cover plate 4 downwards presses or upwards lifts relative to the lower cover plate 6, and the LED display part 7 butts against the shear column 8 downwards presses or upwards lifts, so that the fine adjustment of the lower cover plate 6 and the LED display part 7 is completed.
Specifically, the shear column 8 is further provided with a positioning pin 81. By providing the positioning pins 81 on the shear column 8, the shear column 8 can be made to abut against the LED display 8.
Specifically, the upper cover plate 4, the middle cover plate 5 and the lower cover plate 6 are respectively provided with a through hole for the shear column 8 to pass through, and the diameters of the through holes in the upper cover plate 4, the middle cover plate 5 and the lower cover plate 6 are sequentially increased. Through increasing the diameter of the through holes on the upper cover plate 4, the middle cover plate 5 and the lower cover plate 6 in sequence, the shear column 8 can be matched with the LED display part 7 to incline at a certain angle, and the shear column 8 can be perpendicular to the upper top surface of the LED display part 7 all the time.
Specifically, the lower bottom surface of the upper cover plate 4 is provided with a containing groove for containing the display screen mounting cantilever beam 9. The suspension beam 9 can be accommodated by arranging the accommodating groove on the lower bottom surface of the upper cover plate 4, so that the triaxial connector can be firmly and fixedly connected to the suspension beam 9.
Specifically, the lower cover plate 6 is provided with a bar hole 61 and a fixing bolt 10, the fixing bolt 10 passes through the bar hole 61 of the lower cover plate 6 to be fixedly connected with the LED display part 7, and the adjustable connecting component 11 is a bolt-fit nut adjustable component. Through setting up bar hole 61, can effectually solve the problem that produces line position error or because installation produces the error when triaxial connector and cantilever beam 9 fixed connection when LED display part 7 screw hole processing, also can carry out horizontal position to LED display part 8 and adjust, through setting up bar hole 61, all greatly reduced to the machining precision of LED display part 8 and the requirement of lay the position, be favorable to practicing thrift the processing cost.
The specific implementation process of the invention is as follows: the bottom surface of the upper cover plate 4 is propped against the upper cantilever beam 91, the top surface of the middle cover plate 5 is propped against the lower cantilever beam 92, the cantilever beam 9 is matched with the accommodating groove of the upper cover plate 4, the upper cover plate 4 and the middle cover plate 5 are fixedly connected through a bolt matched nut adjustable component, two inner side surfaces 331 of the positive and negative tooth screw bolts 33 are clamped through an adjustable spanner, the positive and negative tooth screw bolts 33 are rotated anticlockwise to shorten the triaxial connector, the positive and negative tooth screw bolts 33 are rotated clockwise to extend the triaxial connector, finally, the lower bottom surface of the lower cover plate 6 of the triaxial connector contacts with the LED display part 7, the lower bottom surface of the lower cover plate 6 of the triaxial connector is jointed with the LED display part 7 through rotating the upper movable joint bolt 31 and the lower movable joint bolt 32, and then finely adjusting and rotating the positive and negative tooth screw bolts 33, the upper fastening screw 332 passes through the positive and negative screw bolt 33 to abut against the upper movable joint bolt 31, the lower fastening screw 333 passes through the positive and negative screw bolt 33 to abut against the lower movable joint bolt 32, the strip-shaped hole 61 sequentially passes through the upper cover plate 4, the middle cover plate 5 and the lower cover plate 6 to contact the LED display part 7, the positioning pin 81 passes through the shear column 8, the fixing bolt 10 passes through the strip-shaped hole 61 of the lower cover plate 6 to be fixedly connected with the LED display part 7, the positioning pin 81 on the shear column 8 abuts against the upper cover plate 4, the end part of the shear column 8 abuts against the LED display part 7, the lower cover plate 6 and the LED display part 7 are integrally attached together, then the adjusting bolt is matched with the nut adjustable component to finely adjust the gap between the lower cover plate 6 and the LED display part 7 so as to enable the lower cover plate 6 to be completely attached to the LED display part 7, and the adjustment of the triaxial connector is completed.
When the fixing bolt 10 on the lower cover plate 6 needs to be separated from the LED display part 7, the upper fastening screw 332 and the lower fastening screw 333 on the positive and negative screw bolt 33 are removed, the positive and negative screw bolt 33 is rotated anticlockwise to shorten the triaxial connector, the lower cover plate 6 of the triaxial connector is further separated from the LED display part 7, then the bolt of the upper cover plate 4 is taken out together with the nut adjustable component, and finally the whole triaxial connector is taken out.
The foregoing examples merely illustrate embodiments of the invention and are described in more detail and are not to be construed as limiting the scope of the invention. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the invention, which are all within the scope of the invention. Accordingly, the scope of protection of the present invention is to be determined by the appended claims.
Claims (7)
1. A triaxial connecting piece for mirror surface backdrop LED display screen, its characterized in that, a triaxial connecting piece for mirror surface backdrop LED display screen includes: the LED display device comprises a first connecting piece, a second connecting piece, a Z-axis adjusting device, an upper cover plate, a middle cover plate and a lower cover plate, wherein the upper cover plate and the middle cover plate are connected through an adjustable connecting assembly, a middle cover connecting joint is arranged at the bottom of the middle cover plate, a lower cover connecting joint is arranged on the top surface of the lower cover plate, two ends of the Z-axis adjusting device respectively extend into the middle cover connecting joint and the lower cover connecting joint, the first connecting piece horizontally penetrates through the middle cover connecting joint and the Z-axis adjusting device to movably connect the middle cover connecting joint with the Z-axis adjusting device, the second connecting piece vertically penetrates through the lower cover connecting joint and the Z-axis adjusting device to movably connect the lower cover connecting joint with the Z-axis adjusting device, and the lower cover plate is fixedly connected with an LED display part;
the Z-axis adjusting device comprises: the two ends of the positive and negative tooth stud are respectively in threaded connection with the upper swing bolt and the lower swing bolt, the first connecting piece horizontally penetrates through the middle cover connecting joint and the swing joint of the upper swing bolt to movably connect the middle cover connecting joint and the upper swing bolt, and the second connecting piece vertically penetrates through the lower cover connecting joint and the swing joint of the lower swing bolt to movably connect the lower cover connecting joint and the lower swing bolt;
the triaxial connecting piece for the mirror backdrop LED display screen is further provided with a shear column, and the shear column sequentially penetrates through the upper cover plate, the middle cover plate and the lower cover plate, and the end part of the shear column abuts against the LED display part;
the lower cover plate is provided with a strip-shaped hole and a fixing bolt, the fixing bolt penetrates through the strip-shaped hole of the lower cover plate to be fixedly connected with the LED display part, and the adjustable connecting component is a bolt-matched nut adjustable component.
2. The triaxial connector for a mirror backdrop LED display screen according to claim 1, wherein the positive and negative screw studs are hollow screw studs, positive threaded holes are formed in the upper ends of the positive and negative screw studs, and counter threaded holes are formed in the lower ends of the positive and negative screw studs.
3. The triaxial connector for a mirror backdrop LED display according to claim 2, wherein two opposite sides of the positive and negative stud are provided with open grooves, inner sides of the two open grooves are parallel to each other, the inner sides are provided with windows, and the windows are communicated with the hollow of the positive and negative stud.
4. The triaxial connector for a mirror backdrop LED display according to claim 1, wherein two ends of the positive and negative screw bolts are respectively provided with an upper fastening screw and a lower fastening screw, the upper fastening screw passes through the positive and negative screw bolts to abut against the upper swing bolt, and the lower fastening screw passes through the positive and negative screw bolts to abut against the lower swing bolt.
5. The triaxial connector for a specular backdrop LED display of claim 1, wherein the shear posts are further provided with locating pins.
6. The triaxial connector for a mirror-surface awning LED display screen according to claim 1, wherein through holes for passing through shear columns are formed in the upper cover plate, the middle cover plate and the lower cover plate, and diameters of the through holes in the upper cover plate, the middle cover plate and the lower cover plate are sequentially increased.
7. The triaxial connector for a mirror backdrop LED display according to claim 1, wherein the lower bottom surface of the upper cover plate is provided with a receiving groove for receiving a display mounting cantilever.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811298364.7A CN109210343B (en) | 2018-11-02 | 2018-11-02 | Triaxial connecting piece for mirror-face backdrop LED display screen |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811298364.7A CN109210343B (en) | 2018-11-02 | 2018-11-02 | Triaxial connecting piece for mirror-face backdrop LED display screen |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109210343A CN109210343A (en) | 2019-01-15 |
| CN109210343B true CN109210343B (en) | 2023-10-20 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811298364.7A Active CN109210343B (en) | 2018-11-02 | 2018-11-02 | Triaxial connecting piece for mirror-face backdrop LED display screen |
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