CN108010455B - Spliced LED display screen - Google Patents
Spliced LED display screen Download PDFInfo
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- CN108010455B CN108010455B CN201810108212.XA CN201810108212A CN108010455B CN 108010455 B CN108010455 B CN 108010455B CN 201810108212 A CN201810108212 A CN 201810108212A CN 108010455 B CN108010455 B CN 108010455B
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- blades
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- 238000010586 diagram Methods 0.000 description 8
- 230000000694 effects Effects 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
Classifications
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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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- 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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- 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 invention discloses a spliced LED display screen, which comprises a plurality of display units which rotate respectively, wherein each display unit is at least provided with two blades which are uniformly distributed around a rotation center, all the blades are positioned in the same plane, a plurality of LEDs are arranged on the blades, and the tracks of the front ends of the blades of the adjacent display units are overlapped in a staggered way. According to the invention, the LED columns are driven to rotate in a plane through the rotation of the display unit, when the LED columns are at the preset positions, each LED is lightened according to the pixels of an image, meanwhile, the LED columns rotate for a certain angle, and stable image display is formed by utilizing human vision residues.
Description
Technical Field
The invention relates to the field of LED display screens, in particular to a spliced LED display screen.
Background
The LED display screen is widely applied to public places such as advertisements, stations, banks, markets and the like, and has the advantages of low power consumption, long service life, good color and the like. At present, for some large LED display screens, in order to facilitate transportation and installation, a square box 1 is usually adopted to be spliced (as shown in fig. 1), and because the square box and the pixel point are implemented in a one-to-one manner, the cost is high. In order to reduce the cost, the round box bodies 2 which dynamically rotate are spliced into a large display screen (as shown in fig. 2) on different planes, and because the display surfaces of the box bodies are not on the same plane when being spliced, the display effect is affected, and only when the front side of the display screen is seen, the effect is barely good, and when the front side or the rear side is seen from left to right, a part of the display screen is protruded, a part of the display screen is recessed, and the effect is poor.
Disclosure of Invention
The invention aims at: when the circular box bodies which dynamically rotate are spliced into the large display screen, the display surfaces of the box bodies are not on the same plane when the box bodies are spliced, so that the display effect is affected.
In order to achieve the above purpose, the technical scheme adopted by the invention is as follows:
The spliced LED display screen comprises a plurality of display units which rotate respectively, wherein at least two blades which are uniformly distributed around a rotation center are arranged in each display unit, all the blades are positioned in the same plane, a plurality of LEDs are arranged on the blades, and the tracks of the front ends of the blades of the adjacent display units are overlapped in a staggered mode.
According to the invention, the plurality of display units are arranged, at least two blades uniformly distributed around the rotation center are arranged in each display unit, the plurality of LEDs are arranged on the blades, the display units rotate to drive the LED columns to rotate in a plane, when the LEDs are arranged at the preset positions, each LED is lightened according to the pixels of an image, the LED columns rotate at a certain angle, and the stable image display is formed by utilizing the vision residues of people.
As a preferred embodiment of the present invention, all the display units are rotated in the same direction.
As a preferred embodiment of the present invention, two blades are provided in each display unit.
As a preferable scheme of the invention, the maximum boundary of the blade is a section of a curve (X+R 0/21/2)2+(Y-R0/21/2)2＝2R0 2, wherein X, Y is a blade boundary coordinate, and R 0 is a blade length.
As a preferred embodiment of the present invention, three blades are provided in each display unit.
As a preferred scheme of the invention, the maximum boundary of the blade is a curve (one section in X+3 1/2R0/2)2+(Y-R0/2)2＝3R0 2, wherein X, Y is the blade boundary coordinate, and R 0 is the blade length.
As a preferred embodiment of the present invention, the adjacent display units are rotated in opposite directions.
As a preferred embodiment of the present invention, the rotation centers of the adjacent display units are arranged in a square shape with respect to each other.
As a preferable mode of the invention, the number of the blades is 2-11.
As a preferred embodiment of the present invention, the rotation centers of the adjacent display units are arranged in a regular triangle.
In summary, due to the adoption of the technical scheme, the beneficial effects of the invention are as follows:
According to the invention, the plurality of display units are arranged, at least two blades uniformly distributed around the rotation center are arranged in each display unit, the plurality of LEDs are arranged on the blades, the display units rotate to drive the LED columns to rotate in a plane, when the LEDs are arranged at the preset positions, each LED is lightened according to the pixels of an image, the LED columns rotate at a certain angle, and the stable image display is formed by utilizing the vision residues of people.
Drawings
Fig. 1 is a schematic diagram of splicing a square box body in the prior art.
Fig. 2 is a schematic diagram of splicing a circular box body in the prior art.
Fig. 3 is a schematic diagram of a first type of tiled LED display screen in the present invention.
Fig. 4 is a blade shape of the two-blade display unit in fig. 3.
Fig. 5 is a schematic diagram of the motion cycle of four adjacent display elements of fig. 3.
Fig. 6 is a schematic diagram of a second type of tiled LED display screen in the present invention.
Fig. 7 is a blade shape of the three-leaf type display unit in fig. 6.
Fig. 8 is a schematic diagram of the motion cycle of adjacent three display elements of fig. 6.
Fig. 9 and 10 are schematic views of the relative movement of adjacent display unit blades.
Fig. 11 is a schematic diagram of a third type of tiled LED display screen in the present invention.
Fig. 12 is a schematic view of a fourth spliced LED display screen according to the present invention.
The marks in the figure: 1-square box, 2-circular box, 3-display unit, 4-blade.
Detailed Description
The present invention will be described in detail with reference to the accompanying drawings.
The present invention will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present invention more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.
Example 1
The embodiment provides a spliced LED display screen;
as shown in fig. 3, the spliced LED display screen in this embodiment includes a plurality of display units 3 that rotate respectively, each display unit is provided with two blades 4 that are uniformly distributed around a rotation center, that is, the two blades are arranged at an angle of 180 °, all the blades are located in the same plane, a plurality of LEDs are arranged on the blades, and the tracks at the front ends of the blades of adjacent display units are overlapped in a staggered manner.
In this embodiment, all the display units rotate in the same direction, i.e. clockwise or counterclockwise; the rotation initial position is the blade tip intersection point; the rotation speeds are the same, overlapping portions enter in a time-sharing manner, the same space but at different times, and the tip size of each blade meets the specified conditions.
As shown in fig. 9, the blade track of the P point to O 1 (i.e., the maximum width of the blade of O 1) is obtained by using the relative motion in physics through simple mathematical calculation, and the specific process is as follows:
Assuming that the blades of O 1 are stationary, the coordinate axis O 1O2 rotates in the opposite direction at the same angular velocity (note: the prescribed counter-clockwise direction is the forward direction).
"Motion trail" of O 2: x=2 1/2R0sin(-ωt);Y＝21/2R0cos(-ωt);P O2 is "moved with" by O 1O2; p O 2 has an angular velocity ω relative to O 1O2; the angular velocity of O 1O2 relative to O 1 P is- ω; therefore, P O 2 has an angular velocity of 0 relative to O 1 P.
It should be noted that: the point P is the blade tip of O 1, also the blade tip of O 2, at which point they recombine into a point, at which point they are separated, or can be represented by two different letters.
Relative motion trace of point P:
X＝21/2R0sin(-ωt)-R0/21/2；
Y＝21/2R0cos(-ωt)+R0/21/2；
Moving R 0/21/2 to the left of the equal sign, squaring, and adding the two formulas to obtain:
(X+R0/21/2)2+(Y-R0/21/2)2＝2R0 2
In this embodiment, the maximum boundary of the blade is set as a curve (one segment of X+R 0/21/2)2+(Y-R0/21/2)2＝2R0 2, where R 0 is the length of the blade, and two blades are set in each display unit, so that when the display units rotate in the same direction, adjacent display units are ensured not to interfere with each other in an overlapping area, and the adjacent display units are close to and leave from each other symmetrically, so that the other side of the blade only needs to be mirrored, and the other of the two blade shapes is drawn.
Example 2
The embodiment provides a spliced LED display screen;
as shown in fig. 6, the spliced LED display screen in this embodiment includes a plurality of display units 3 that rotate respectively, each display unit is provided with three blades 4 that are uniformly distributed around a rotation center, that is, three blades are arranged at an angle of 120 °, all the blades are located in the same plane, a plurality of LEDs are arranged on the blades, and the tracks at the front ends of the blades of adjacent display units overlap in a staggered manner.
In this embodiment, all the display units rotate in the same direction, i.e. clockwise or counterclockwise; the rotation initial position is the blade tip intersection point; the rotation speeds are the same, overlapping portions enter in a time-sharing manner, the same space but at different times, and the tip size of each blade meets the specified conditions.
As shown in fig. 9, the "motion trajectory" x=3 1/2R0sin(-ωt);Y＝31/2R0 cos (- ωt) of the same theory O 2;
relative motion trace of point P:
X＝31/2R0sin(-ωt)-31/2R0/2；
Y＝31/2R0cos(-ωt)+R0/2；
the omega t is eliminated to obtain the following components:
(X+31/2R0/2)2+(Y-R0/2)2＝3R0 2
The maximum boundary of the blade is set to a curve (one segment of X+3 1/2R0/2)2+(Y-R0/2)2＝3R0 2, where R 0 is the length of the blade) in this embodiment, when three blades are provided in each display unit, it is ensured that adjacent display units do not interfere with each other in the overlapping region when the display units are rotated in the same direction, and the periodic diagram of the movement of the adjacent three display units in this embodiment is shown in FIG. 8, and it is ensured that adjacent display units do not interfere with each other in the overlapping region, but the width of the blade must be narrower than in both embodiments 1 and 2 during the manufacturing process of the actual blade, thereby avoiding interference phenomenon when rotated.
Example 3
The embodiment provides a spliced LED display screen;
As shown in fig. 11, the spliced LED display screen in this embodiment includes a plurality of display units 3 that rotate individually, each display unit is provided with a plurality of blades 4 that are uniformly distributed around a rotation center, all the blades are located in the same plane, and a plurality of LEDs are arranged on the blades, and the tracks at the front ends of the blades of adjacent display units overlap in a staggered manner.
In this embodiment, adjacent display units rotate in opposite directions, and two display units having overlapping portions each other rotate one clockwise and the other counterclockwise like gears; the rotation initial position is that the blades of one unit are arranged on the bisector of the included angle between the two blades of the other unit; the rotational speed is defined accordingly, and the number of each unit blade satisfies a defined condition.
In this embodiment, the relative positions of the rotation centers of the adjacent display units are arranged in a square shape, that is, the rotation centers O 1O2O3O4 are respectively at the four vertices of the square shape.
In this embodiment, the number of the blades is 2 to 11.
As shown in fig. 10, OA is the 1 st blade, OB 'is the adjacent blade, O' B is the blade of another unit, and B is on the straight line OA at the same time. When the relative positions of the rotation centers are arranged in a square, the following condition must be satisfied:
(1) When OA rotates in the overlap region, the arc AB' or α has a maximum value (about 28.07432 degrees);
(2) When OA rotates in the overlap region, the difference between angle AOO 'and angle BO' O is a maximum of 2 times (about 31.58633 degrees);
i.e. the number of blades should be less than 360/31.58633 =11.39, i.e. at most 11 blades.
Example 4
The embodiment provides a spliced LED display screen;
As shown in fig. 12, the spliced LED display screen in this embodiment includes a plurality of display units 3 that rotate individually, each display unit is provided with a plurality of blades 4 that are uniformly distributed around a rotation center, all the blades are located in the same plane, and a plurality of LEDs are arranged on the blades, and the tracks of the front ends of the blades of adjacent display units overlap in a staggered manner.
In this embodiment, adjacent display units rotate in opposite directions, and two display units having overlapping portions each other rotate one clockwise and the other counterclockwise like gears; the rotation initial position is that the blades of one unit are arranged on the bisector of the included angle between the two blades of the other unit; the rotational speed is defined accordingly, and the number of each unit blade satisfies a defined condition.
In this embodiment, the relative positions of the rotation centers of the adjacent display units are arranged in a regular triangle, that is, the rotation centers O 1O2O3 are respectively at three vertices of the regular triangle, and O 4 fills the intermediate space.
In the present embodiment, when the relative positions of the rotation centers are arranged in a regular triangle, it is necessary to satisfy the following two conditions:
(1) O 4 has a radius 1.732 times smaller than the others;
(2) The angular velocity of O 4 should be 2 times that of O 1O2O3, and the number of blades of O 1O2O3 may also be twice that of O 4.
It should be noted that, for convenience of calculation and drawing, in some of the above embodiments, the blade is simplified to a straight line or other illustration, and does not represent the actual shape of the blade itself.
According to the invention, the whole display screen is formed by arranging the plurality of display units together, at least two blades uniformly distributed around the rotation center are arranged in each display unit, the plurality of LEDs are arranged on the blades, the display units rotate to drive the corresponding LED columns to rotate in a plane, when the LED columns of some display units rotate to a preset position, the corresponding LEDs are lightened according to pixels of images, and the LED columns are rotated for a certain angle through control software, so that the display screen is circulated for one circle, and stable image display is formed by utilizing vision residues of people.
The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and scope of the invention.
Claims (1)
1. The spliced LED display screen is characterized by comprising a plurality of display units which rotate respectively, wherein each display unit is provided with at least two blades which are uniformly distributed around a rotation center, all the blades are positioned in the same plane, a plurality of LEDs are arranged on the blades, the tracks at the front ends of the blades of the adjacent display units are overlapped in a staggered way, the display units rotate to drive LED columns formed by the LEDs to rotate in the plane, when the LED columns are at preset positions, each LED is lightened according to pixels of an image, and stable image display is formed by utilizing vision residues of people;
When all the display units rotate in the same direction and two blades are arranged in each display unit, the maximum boundary of each blade is a section of curve (X+R 0/21/2)2+(Y-R0/21/2)2＝2R0 2, wherein X, Y is the boundary coordinate of the blade, and R 0 is the length of the blade;
When all the display units rotate in the same direction, and each display unit is provided with three blades, the maximum boundary of each blade is a section of curve (X+3 1/2R0/2)2+(Y-R0/2)2＝3R0 2, wherein X, Y is the boundary coordinate of the blade, and R 0 is the length of the blade;
When the adjacent display units rotate in opposite directions and the relative positions of the rotation centers of the adjacent display units are arranged in a regular triangle, the three display units in the regular triangle are O 1、O2 and O 3, and the radius of the display unit O 4,O4 is 1.732 times smaller than that of the display units O 1、O2 and O 3 in a regular triangle middle gap; the angular velocity of O 4 should be 2 times the angular velocity of O 1、O2 and O 3.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810108212.XA CN108010455B (en) | 2018-02-02 | 2018-02-02 | Spliced LED display screen |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810108212.XA CN108010455B (en) | 2018-02-02 | 2018-02-02 | Spliced LED display screen |
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| CN108010455B true CN108010455B (en) | 2024-07-26 |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108898958B (en) * | 2018-07-27 | 2020-09-01 | 深圳市华星光电技术有限公司 | Rotary type spliced screen |
| CN111367322A (en) * | 2018-12-25 | 2020-07-03 | Tcl集团股份有限公司 | Rotary display device, rotary display control method thereof and display curtain wall |
| CN109979343A (en) * | 2019-05-16 | 2019-07-05 | 深圳市芯动电子科技有限公司 | A kind of splice displaying system based on holographic display unit |
| CN110322796A (en) * | 2019-07-11 | 2019-10-11 | 深圳市风扇屏技术有限公司 | Display methods, display system and readable storage medium storing program for executing |
| CN111243452B (en) * | 2020-01-17 | 2022-09-06 | 深圳市福瑞达显示技术有限公司 | Fan screen display method, fan screen and fan screen display system |
| CN112068325B (en) * | 2020-08-21 | 2022-06-17 | 雷文昌 | 3D display screen rotating according to central shaft and combined 3D large screen thereof |
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| CN207742888U (en) * | 2018-02-02 | 2018-08-17 | 杨璨源 | A kind of spliced LED display |
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| JP2003314487A (en) * | 2002-04-25 | 2003-11-06 | Toybox:Kk | Portable electric fan with afterimage display function |
| JP2006152921A (en) * | 2004-11-29 | 2006-06-15 | Sony Corp | Cooling blower fan and video display unit |
| CN1873743A (en) * | 2005-05-31 | 2006-12-06 | 于君 | Display unit of forming image from optical tracks of multiple luminants with different radiuses of rotation |
| CN1873767A (en) * | 2005-05-31 | 2006-12-06 | 于君 | Display unit of forming image from optical tracks through synchronous motion of multiple luminants |
| US20090002289A1 (en) * | 2007-06-28 | 2009-01-01 | Boundary Net, Incorporated | Composite display |
| GB0813807D0 (en) * | 2008-07-29 | 2008-09-03 | Litelogic Ltd | Display module |
| CN202018787U (en) * | 2011-04-07 | 2011-10-26 | 黑龙江省四维影像数码科技有限公司 | Seamless joint-separation LED auto-stereoscopic display screen |
| CN102339570A (en) * | 2011-10-27 | 2012-02-01 | 南京汉德森科技股份有限公司 | Curved LED display screen and its manufacturing and installation method |
| US20130215000A1 (en) * | 2012-02-16 | 2013-08-22 | Qualcomm Mems Technologies, Inc. | Phase delay to avoid blade tip collision in rotating blades signage |
| KR101611892B1 (en) * | 2014-09-01 | 2016-04-15 | 나노인텍 주식회사 | Agitating apparatus having 3 blades without dead zone |
| CN205154507U (en) * | 2015-08-21 | 2016-04-13 | 曹锦梅 | Aerogenerator with stealthy device of emitting diode |
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| CN207742888U (en) * | 2018-02-02 | 2018-08-17 | 杨璨源 | A kind of spliced LED display |
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