CN218568339U - LED spherical display screen - Google Patents
LED spherical display screen Download PDFInfo
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- CN218568339U CN218568339U CN202222409171.2U CN202222409171U CN218568339U CN 218568339 U CN218568339 U CN 218568339U CN 202222409171 U CN202222409171 U CN 202222409171U CN 218568339 U CN218568339 U CN 218568339U
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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
- G09F9/302—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 characterised by the form or geometrical disposition of the individual elements
- G09F9/3026—Video wall, i.e. stackable semiconductor matrix display modules
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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
- G09F9/302—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 characterised by the form or geometrical disposition of the individual elements
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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
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Multimedia (AREA)
- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
Abstract
The utility model provides a spherical display screen of LED, this spherical display screen of LED includes: the frame comprises a plurality of frame units which are spliced with each other, and the frame units are provided with fixing holes; the outer covers are arranged in one-to-one correspondence with the frame units, the inner surfaces and the outer surfaces of the outer covers and the outer surfaces of the frame units are spherical surfaces, and first mounting holes are formed in corners of the outer covers; the connecting piece, the connecting piece is located between frame element and the enclosing cover and covers the concatenation department of establishing at adjacent frame element, is provided with the bar hole on the connecting piece, and first fastener passes the bar hole and is connected with the fixed orifices, and the connecting piece is provided with a plurality of second mounting holes, and a plurality of first mounting holes and a plurality of second mounting hole one-to-one set up, and the second fastener passes first mounting hole and is connected with the second mounting hole. Through the technical scheme provided by the application, the problem that the assembly precision of the outer cover and the frame in the related technology cannot be guaranteed can be solved.
Description
Technical Field
The utility model relates to a LED display screen technical field particularly, relates to a spherical display screen of LED.
Background
Along with the application of LED display screen is more and more popularized, the user experiences higher and higher to the operation of LED display screen, in order to facilitate the show, designs LED display screen into the spherical display screen of LED, and then can improve user's use and experience.
In the related art, the LED ball display includes a frame and a plurality of covers provided on the frame to mount the LED ball display.
However, in the related art, the outer cover is covered on the frame to mount the LED spherical display screen, and due to poor precision of the production process and errors in installation by personnel, the assembly precision of the outer cover and the frame cannot be guaranteed.
SUMMERY OF THE UTILITY MODEL
The utility model provides a spherical display screen of LED to solve the problem that the assembly precision of enclosing cover and frame among the correlation technique can't be guaranteed.
The utility model provides a spherical display screen of LED, the spherical display screen of LED includes: the frame comprises a plurality of frame units which are spliced with each other, and the frame units are provided with fixing holes; the outer covers are arranged in one-to-one correspondence with the frame units, the inner surfaces and the outer surfaces of the outer covers and the outer surfaces of the frame units are spherical surfaces, and first mounting holes are formed in corners of the outer covers; the connecting piece, the connecting piece is located between frame element and the enclosing cover and covers the concatenation department of establishing at adjacent frame element, is provided with the bar hole on the connecting piece, and first fastener passes the bar hole and is connected with the fixed orifices, and the connecting piece is provided with a plurality of second mounting holes, and a plurality of first mounting holes and a plurality of second mounting hole one-to-one set up, and the second fastener passes first mounting hole and is connected with the second mounting hole.
Furthermore, the outer surface of the connecting piece is a spherical surface, and the radian of the outer surface of the connecting piece is matched with the radian of the inner surface of the outer cover.
Furthermore, the connecting piece covers the splicing positions of the four adjacent frame units, the fixing holes are formed in the corners of the frame units, two strip-shaped holes are formed in the connecting piece at intervals, one strip-shaped hole is located above the fixing holes of the two adjacent frame units, and the other strip-shaped hole is located above the fixing holes of the other two frame units.
Furthermore, the extending direction of the two strip-shaped holes on the connecting piece is the same.
Further, the first fastener comprises a first screw rod and a first bolt head, the strip-shaped hole comprises a first hole section and a second hole section which are communicated, the first hole section is located at one end, far away from the frame unit, of the second hole section, the first screw rod penetrates through the second hole section and is connected with the fixing hole, the transverse aperture of the first hole section is larger than the cross section size of the first bolt head, the first bolt head is located in the first hole section, and the transverse aperture of the second hole section is smaller than the cross section size of the first bolt head.
Further, the second fastener comprises a second screw rod and a second bolt head, and the diameter of the first mounting hole is larger than the outer diameter of the second screw rod.
Further, the second mounting hole comprises a third hole section and a fourth hole section which are communicated, the third hole section is located at one end, far away from the frame unit, of the fourth hole section, and the aperture of the third hole section is larger than that of the fourth hole section.
Further, the connecting piece is of a polygonal structure, and the second mounting holes are respectively formed in the corners of the connecting piece.
Further, the connecting sheet is of a central symmetrical structure.
Further, the LED spherical display screen further comprises a plurality of display units, the display units and the frame units are arranged in a one-to-one correspondence mode, and the display units are arranged on one side, far away from the outer cover, of the frame units.
Use the technical scheme of the utility model, LED spherical display screen includes the frame, a plurality of enclosing covers and connection piece, the frame forms through a plurality of frame cell concatenations, concatenation department at adjacent frame cell sets up the connection piece, be provided with the bar hole on the connection piece, through first fastener, the cooperation is installed to bar hole and fixed orifices three, make the connection piece can fix the concatenation department at frame cell, and can cover the enclosing cover and establish on the frame, promote the assembly precision, be provided with a plurality of second mounting holes on the connection piece, the edge of enclosing cover is provided with first mounting hole, utilize the second fastener, first mounting hole and second mounting hole three mutually support, can be with enclosing cover fixed mounting on the connection piece. Adopt above-mentioned structure, through be provided with the connection piece between frame element and enclosing cover, set up the connection piece in the concatenation department of adjacent frame element, can avoid the concatenation department of adjacent frame element to receive the influence of frame element machining precision and artifical installation, thereby avoid the concatenation department of adjacent frame element to have installation error, match through the first mounting hole with enclosing cover edge and the second mounting hole on the connection piece, and utilize the second fastener to install, can guarantee the assembly precision of enclosing cover and frame.
Drawings
The accompanying drawings, which form a part of the present application, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention and not to limit the invention. In the drawings:
fig. 1 shows a schematic structural diagram of an LED spherical display screen provided by an embodiment of the present invention;
FIG. 2 shows a partial enlarged view at A in FIG. 1;
fig. 3 shows a schematic structural diagram of a connecting sheet of an LED spherical display screen provided by an embodiment of the present invention;
FIG. 4 shows a cross-sectional view at B-B in FIG. 3;
fig. 5 shows a schematic diagram of a connection sheet of an LED spherical display screen provided by an embodiment of the present invention being installed at a splicing position of frame units;
fig. 6 is a schematic view illustrating an outer cover of an LED spherical display screen according to an embodiment of the present invention is mounted on a connecting sheet;
fig. 7 shows a schematic diagram of an LED spherical display screen provided by an embodiment of the present invention.
Wherein the figures include the following reference numerals:
10. a frame; 11. a frame unit; 111. a fixing hole;
20. an outer cover; 21. a first mounting hole;
30. connecting sheets; 31. a strip-shaped hole; 311. a first bore section; 312. a second bore section; 32. a second mounting hole; 321. a third bore section; 322. a fourth bore section;
41. a first fastener; 411. a first screw; 412. a first bolt head; 42. a second fastener; 421. a second screw; 422. a second bolt head.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
As shown in fig. 1 to 7, the embodiment of the utility model provides a spherical display screen of LED, this spherical display screen of LED includes frame 10, a plurality of enclosing covers 20 and connection piece 30, frame 10 includes a plurality of frame element 11 of splicing each other, frame element 11 is provided with fixed orifices 111, a plurality of enclosing covers 20 and a plurality of frame element 11 one-to-one setting, the internal surface and the surface of enclosing cover 20 and the surface of frame element 11 are the sphere, the edge of enclosing cover 20 is provided with first mounting hole 21, connection piece 30 is located between frame element 11 and the enclosing cover 20 and covers the concatenation department of establishing at adjacent frame element 11, be provided with bar hole 31 on the connection piece 30, first fastener 41 passes bar hole 31 and is connected with fixed orifices 111, connection piece 30 is provided with a plurality of second mounting holes 32, a plurality of first mounting holes 21 and a plurality of second mounting holes 32 one-to-one setting, second fastener 42 passes first mounting hole 21 and is connected with second mounting hole 32.
Use the spherical display screen of LED that this embodiment provided, this spherical display screen of LED includes frame 10, a plurality of enclosing covers 20 and connection piece 30, frame 10 forms through the concatenation of a plurality of frame cell 11, splice department at adjacent frame cell 11 sets up connection piece 30, be provided with bar hole 31 on the connection piece 30, through first fastener 41, bar hole 31 and fixed orifices 111 three install the cooperation, make connection piece 30 can fix the concatenation department at frame cell 11, and can cover in frame 10 in order to establish enclosing cover 20, promote the assembly precision, be provided with a plurality of second mounting holes 32 on connection piece 30, the edge of enclosing cover 20 is provided with first mounting hole 21, utilize second fastener 42, first mounting hole 21 and second mounting hole 32 three mutually support, can be with enclosing cover 20 fixed mounting on connection piece 30. Adopt above-mentioned structure, through be provided with connection piece 30 between frame element 11 and enclosing cover 20, set up connection piece 30 in the concatenation department of adjacent frame element 11, the concatenation department that can avoid adjacent frame element 11 receives the influence of frame element 11 machining precision and artifical installation, thereby avoid the concatenation department of adjacent frame element 11 to have installation error, match through the first mounting hole 21 with enclosing cover 20 edge department and the second mounting hole 32 on the connection piece 30, and install utilizing second fastener 42, can guarantee the assembly precision of enclosing cover 20 and frame 10.
In this embodiment, the outer surface of the connecting piece 30 is spherical, and the curvature of the outer surface of the connecting piece 30 is matched with the curvature of the inner surface of the outer cover 20. Adopt above-mentioned structure, because the internal surface of enclosing cover 20 is the sphere, make the surface of connection piece 30 can match the internal surface of enclosing cover 20, radian nonconformity when installing enclosing cover 20 and connection piece 30 can be avoided, take place to warp when can preventing the installation of enclosing cover 20, and cover a plurality of enclosing covers 20 and establish on connection piece 30, can make a plurality of enclosing covers 20 install on same installation sphere, can guarantee that enclosing cover 20 can not take place to warp, can reduce installation error again, promote assembly efficiency.
As shown in fig. 1 to fig. 3, the connecting sheet 30 covers the splicing positions of four adjacent frame units 11, the fixing holes 111 are arranged at the corners of the frame units 11, two strip-shaped holes 31 are arranged at intervals on the connecting sheet 30, one strip-shaped hole 31 is located above the fixing holes 111 of two adjacent frame units 11, and the other strip-shaped hole 31 is located above the fixing holes 111 of the other two frame units 11. By adopting the structure, the fixing holes 111 are arranged at the corners of the frame units 11, one strip-shaped hole 31 is used for matching the fixing holes 111 of two adjacent frame units 11, the other strip-shaped hole 31 is used for matching the fixing holes 111 of the other two adjacent frame units 11, the strip-shaped hole 31 of the connecting piece 30 is used for matching and installing with the fixing hole 111, errors can be eliminated through the high-precision design of the connecting piece 30, the outer cover 20 can be installed on the connecting piece 30 through the adjustment of the connecting piece 30, and the assembling precision is further improved.
It should be noted that, when installing connection piece 30, install through first fastener 41 and one of them bar hole 31 earlier, can make a plurality of second mounting holes 32 on connection piece 30 can match the first mounting hole 21 on the enclosing cover 20 through rotation adjustment connection piece 30 after the installation, and eliminate installation error, adjust the back through installing first fastener 41 in another bar hole 31, install connection piece 30 fixedly, and install fixedly enclosing cover 20 through second fastener 42, can prevent to have the gap between the adjacent enclosing cover 20, can promote assembly efficiency again, guarantee the installation accuracy, avoid frequently dismantling.
In this embodiment, the two strip-shaped holes 31 in the connecting piece 30 extend in the same direction. Through setting two bar holes 31 on the connection piece 30 to the same structure, be convenient for adjust the position of connection piece 30, still be convenient for carry out production and processing to connection piece 30.
As shown in fig. 2 to 4, the first fastening member 41 includes a first screw 411 and a first bolt head 412, the bar-shaped hole 31 includes a first hole section 311 and a second hole section 312 which are communicated with each other, the first hole section 311 is located at an end of the second hole section 312 far from the frame unit 11, the first screw 411 passes through the second hole section 312 and is connected with the fixing hole 111, a transverse aperture of the first hole section 311 is larger than a cross-sectional dimension of the first bolt head 412, the first bolt head 412 is located in the first hole section 311, and a transverse aperture of the second hole section 312 is smaller than a cross-sectional dimension of the first bolt head 412. By adopting the above structure, the bar-shaped hole 31 includes the first hole section 311 and the second hole section 312, the transverse aperture of the first hole section 311 is larger than the cross sectional size of the first bolt head 412, so that the first bolt head 412 of the first fastening member 41 can be installed in the first hole section 311 of the bar-shaped hole 31, it is ensured that the outer surface of the connecting piece 30 is a spherical surface, deformation is avoided when the outer cover 20 is installed, and because the transverse aperture of the second hole section 312 is smaller than the cross sectional size of the first bolt head 412, the first fastening member 41 can be fixed on the second hole section 312, so that the connecting piece 30 is fixedly connected with the frame unit 11, and the reliability of the connecting piece 30 is improved.
It should be noted that the transverse aperture refers to the aperture of the strip-shaped hole 31 in the direction perpendicular to the extending direction thereof.
As shown in fig. 2, the second fastening member 42 includes a second screw 421 and a second bolt head 422, and the first mounting hole 21 has a diameter larger than the outer diameter of the second screw 421. By adopting the structure, the second fastening piece 42 is used for fixedly connecting the outer cover 20 and the connecting piece 30, and the outer diameter of the first mounting hole 21 is larger than that of the second screw 421, so that the second screw 421 of the second fastening piece 42 is matched with the second mounting hole 32, the distance between the adjacent outer covers 20 is adjusted, and the gap between the outer covers 20 is ensured to be in a reasonable range.
As shown in fig. 3 and 4, the second mounting hole 32 includes a third hole section 321 and a fourth hole section 322 that are communicated with each other, the third hole section 321 is located at an end of the fourth hole section 322 that is far away from the frame unit 11, and the hole diameter of the third hole section 321 is larger than that of the fourth hole section 322. Adopt above-mentioned structure, through setting up second mounting hole 32 for the aperture of third hole section 321 is greater than the aperture of fourth hole section 322, makes when installing the enclosing cover 20, and third hole section 321 can play the effect of direction and location, guarantees the installation effectiveness, and installs the cooperation with second fastener 42 and fourth hole section 322, avoids the installation error to lead to having the gap between the enclosing cover 20.
In the present embodiment, the connecting piece 30 has a polygonal structure, and the plurality of second mounting holes 32 are respectively disposed at a plurality of corners of the connecting piece 30. Through setting up the structure to connection piece 30 for connection piece 30 can match the concatenation department of a plurality of frame element 11, and correspond the setting in the edge with second mounting hole 32, can enough be convenient for carry out connection piece 30 processing and assembly, can promote the assembly precision again, prevent that connection piece 30 and enclosing cover 20 from having the error, lead to unable assembly.
In the present embodiment, the connecting piece 30 has a central symmetrical structure. By setting the connecting sheet 30 to a centrosymmetric structure, the assembling of the connecting sheet 30 with the frame unit 11 and the outer cover 20 is facilitated, the processing of the connecting sheet 30 is also facilitated, the processing accuracy can be improved, thereby eliminating the assembling error between the outer cover 20 and the frame 10, and improving the assembling accuracy.
In this embodiment, the LED spherical display screen further includes a plurality of display units, the display units are disposed in one-to-one correspondence with the frame units 11, and the display units are disposed on one side of the frame units 11 away from the outer cover 20. Adopt above-mentioned structure, through setting up the installation with a plurality of display element and a plurality of frame element 11 correspondence, can be convenient for install, can guarantee the reliability of connecting again to set up display element on one side of the frame element 11 of keeping away from enclosing cover 20, guarantee the practicality of the spherical display screen of LED.
The technical scheme provided by the embodiment has the following beneficial effects:
(1) The connecting piece 30 is arranged between the frame unit 11 and the outer cover 20, the connecting piece 30 is arranged at the splicing part of the adjacent frame unit 11, so that the installation error of the splicing part of the adjacent frame unit 11 is avoided, and the assembly precision of the outer cover 20 and the frame 10 can be ensured by matching the first installation hole 21 at the corner of the outer cover 20 with the second installation hole 32 on the connecting piece 30 and installing the outer cover by using the second fastener 42;
(2) By arranging the fixing holes 111 at the corners of the frame unit 11 and matching the fixing holes 111 with the two strip-shaped holes 31, errors can be eliminated through high-precision design of the connecting sheet 30, and the outer cover 20 can be mounted on the connecting sheet 30 by adjusting the connecting sheet 30, so that the assembly precision is improved;
(3) Through setting up the shape hole 31 structure for the first bolt head 412 of first fastener 41 can install the first hole section 311 that gets into shape hole 31, guarantees that the surface of connection piece 30 is the sphere, takes place to warp when avoiding the enclosing cover 20 to first fastener 41 can be fixed on second hole section 312, makes connection piece 30 and frame element 11 carry out fixed connection.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. The utility model provides a spherical display screen of LED which characterized in that, the spherical display screen of LED includes:
the frame (10), the frame (10) comprises a plurality of frame units (11) which are spliced with each other, and the frame units (11) are provided with fixing holes (111);
the outer covers (20) are arranged in one-to-one correspondence with the frame units (11), the inner surface and the outer surface of each outer cover (20) and the outer surface of each frame unit (11) are spherical surfaces, and first mounting holes (21) are formed in corners of each outer cover (20);
connecting piece (30), connecting piece (30) are located between frame element (11) and enclosing cover (20) and the lid is established adjacently the concatenation department of frame element (11), be provided with bar hole (31) on connecting piece (30), first fastener (41) pass bar hole (31) and with fixed orifices (111) are connected, connecting piece (30) are provided with a plurality of second mounting hole (32), and are a plurality of first mounting hole (21) and a plurality of second mounting hole (32) one-to-one sets up, and second fastener (42) pass first mounting hole (21) and with second mounting hole (32) are connected.
2. The LED spherical display screen according to claim 1, wherein the outer surface of the connecting piece (30) is spherical, and the radian of the outer surface of the connecting piece (30) is matched with the radian of the inner surface of the outer cover (20).
3. The LED spherical display screen according to claim 1, wherein the connecting sheet (30) covers the splicing positions of four adjacent frame units (11), the fixing holes (111) are arranged at the corners of the frame units (11), two strip-shaped holes (31) are arranged on the connecting sheet (30) at intervals, one strip-shaped hole (31) is positioned above the fixing holes (111) of two adjacent frame units (11), and the other strip-shaped hole (31) is positioned above the fixing holes (111) of the other two frame units (11).
4. LED spherical display screen according to claim 3, characterized in that the two strip-shaped holes (31) on the connecting piece (30) extend in the same direction.
5. The LED spherical display screen according to claim 1, wherein the first fastening member (41) comprises a first screw (411) and a first bolt head (412), the strip-shaped hole (31) comprises a first hole section (311) and a second hole section (312) which are communicated with each other, the first hole section (311) is positioned at one end of the second hole section (312) far away from the frame unit (11), the first screw (411) passes through the second hole section (312) and is connected with the fixing hole (111), the transverse aperture of the first hole section (311) is larger than the transverse dimension of the first bolt head (412), the first bolt head (412) is positioned in the first hole section (311), and the transverse aperture of the second hole section (312) is smaller than the transverse dimension of the first bolt head (412).
6. The LED spherical display screen according to claim 1, wherein the second fastening member (42) comprises a second screw (421) and a second bolt head (422), and the first mounting hole (21) has a diameter larger than the outer diameter of the second screw (421).
7. The LED spherical display screen according to claim 6, wherein the second mounting hole (32) comprises a third hole section (321) and a fourth hole section (322) which are communicated, the third hole section (321) is positioned at one end of the fourth hole section (322) far away from the frame unit (11), and the aperture of the third hole section (321) is larger than that of the fourth hole section (322).
8. The LED spherical display screen according to any one of claims 1 to 7, wherein the connecting piece (30) has a polygonal structure, and the second mounting holes (32) are respectively provided at corners of the connecting piece (30).
9. LED spherical display according to any of claims 1 to 7, wherein the connection piece (30) is a central symmetrical structure.
10. The LED spherical display screen according to any of the claims 1 to 7, characterized in that the LED spherical display screen further comprises a plurality of display units, the plurality of display units are arranged in one-to-one correspondence with the plurality of frame units (11), and the display units are arranged on one side of the frame units (11) far away from the outer cover (20).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222409171.2U CN218568339U (en) | 2022-09-08 | 2022-09-08 | LED spherical display screen |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222409171.2U CN218568339U (en) | 2022-09-08 | 2022-09-08 | LED spherical display screen |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218568339U true CN218568339U (en) | 2023-03-03 |
Family
ID=85311565
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222409171.2U Active CN218568339U (en) | 2022-09-08 | 2022-09-08 | LED spherical display screen |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218568339U (en) |
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2022
- 2022-09-08 CN CN202222409171.2U patent/CN218568339U/en active Active
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