CN108305568B

CN108305568B - Forming method of large curved surface LED screen

Info

Publication number: CN108305568B
Application number: CN201810281726.5A
Authority: CN
Inventors: 吴俊斌; 汪淼; 王丹; 付恒生
Original assignee: Dalian Wanda Group Co Ltd
Current assignee: Dalian Wanda Group Co Ltd
Priority date: 2018-04-02
Filing date: 2018-04-02
Publication date: 2022-08-02
Anticipated expiration: 2038-04-02
Also published as: CN108305568A; WO2019192094A1

Abstract

The invention discloses a method for forming a large curved surface LED screen, which comprises the following steps: 1) forming a screen model; 2) defining a plane where a section circle with the diameter D is located as an equatorial plane, and symmetrically dividing the arc-shaped surface of the large spherical LED screen model into a plurality of LED screen module belts with equal height in the upward and downward directions from the equatorial plane; 3) the method comprises the following steps of (1) equally dividing a fixed number of parts into even number of parts and trapezoidal LED screen modules with the same size, and equally dividing line by line downwards; when the width of the bottom module is equal to a certain size, the bottom module is equally divided again by adopting a fixed angle of 2 times. The segmentation is finished by analogy in sequence, and the size and the shape of each LED screen module are obtained; 4) and sequentially numbering, processing and assembling each LED screen module according to the size and the shape to finish the complete large-scale curved surface LED screen.

Description

Forming method of large curved surface LED screen

Technical Field

The invention relates to the field of movie screen display, in particular to a forming method of a large curved surface LED screen.

Background

Along with the continuous development of the LED industry, in order to meet market demands, the LED display screens with large curved surfaces are more and more, the LED display screens with large curved surfaces are formed by assembling and connecting LED modules with the same size at present, and the problems of poor curved surface flatness, large gaps, poor final display effect and the like exist after the LED display screens with large curved surfaces are assembled.

Disclosure of Invention

The invention aims to provide a forming method of a large curved surface LED screen, which is convenient to process and can effectively improve the display effect.

The forming method of the large curved surface LED screen comprises the following steps:

1) forming a large curved surface LED screen model with the diameter of D through software;

2) defining a plane where a cross-sectional circle with the diameter D is located as an equatorial plane, symmetrically and bilaterally upwards and downwards from the equatorial plane, equally dividing an arc-shaped surface of the large-scale spherical LED screen model into a plurality of LED screen module belts with equal height, defining a No. 1, a No. 2, a No. 1, a No. M, wherein X, N, M is a positive natural number, and N is more than or equal to M;

3) aiming at the 1 st LED screen module strip, the circle centers of upper and lower section circles of the LED screen module strip are taken as the original points, the LED screen module strip is equally divided into an even number of first trapezoidal LED screen modules with the same size by a fixed angle a, the LED screen modules are equally divided downwards one by one according to the fixed angle a, and the number of the first trapezoidal LED screen modules obtained by equally dividing each LED screen module strip is the same and is an even number A;

when the width of the bottom of the first trapezoid LED screen module is equal to the processing size of the LED screen module, namely the X-th LED screen module band, the X-th LED screen module band with the bottom width smaller than the processing size of the LED screen module is equally divided by a fixed angle a which is 2 times that of the first trapezoid LED screen module, and even A/2 second trapezoid LED screen modules with the same size are formed;

4) starting from the X-th LED screen module belt, equally dividing the LED screen module belt one by one downwards according to a method of equally dividing the LED screen module belt by a fixed angle a of 2 times, and when the width of the bottom of the second trapezoidal LED screen module belt is equal to or smaller than the processing size of the LED screen module belt, equally dividing the LED screen module belt with the bottom width smaller than the processing size of the LED screen module belt by a fixed angle a of 4 times to form an even number of A/4 third trapezoidal LED screen modules with the same size;

repeating the step 4) in sequence, wherein each time the step is repeated, the adopted equant angle is doubled, the number of the corresponding trapezoidal LED screen modules is doubled, and the number of the LED screen modules which are equably divided each time is even;

5) when reaching the center of the bottom of the LED screen, the LED screen is equally divided into 3 polygonal LED screen modules similar to triangles by adopting an angle of 60 degrees, and the whole large-scale LED screen is closed;

6) according to the steps 2) to 4), dividing the LED screen module band above the equatorial plane;

7) dividing the whole large curved surface LED screen into a plurality of LED screen modules with the same size and shape or different LED screen modules according to the steps 2) to 6), and numbering the LED screen modules with the same size and shape in sequence according to the numbers of the LED screen modules;

8) and processing each LED screen module according to the size formed by division, and assembling the processed LED screen modules on the support frame according to the serial numbers in sequence to form the complete large-scale curved surface LED screen.

In step 3), the LED screen modules formed in the X-th LED screen module band in equal intervals are pentagonal, the LED screen modules formed in the X + 1-th LED screen module band and the LED screen module bands below the X-th LED screen module band in equal intervals are second trapezoidal LED screen modules, and similarly, in step 4), the LED screen modules formed in the LED screen module bands in equal intervals with the equal angle and the number beginning to change are pentagonal LED screen modules capable of effectively improving the triangular gaps.

The fixed angle a is 1.5 degrees.

The processing size of the LED screen module is 80 mm.

The number of the LED screen modules into which the 1 st LED screen module strip is divided is 120.

The technical scheme of the invention has the following advantages:

1. the method provided by the invention is adopted to divide the large curved surface LED screen model, so that the specific size and shape of each LED screen module can be obtained, the method has the advantages of convenience in processing and installation, the types of the LED screen modules can be reduced, the types of the steel plates for installing the LED screen modules can be reduced, the trapezoidal and pentagonal splicing on the optimal viewing surface of the large curved surface screen is ensured, and the display black gaps are absolutely avoided.

Drawings

Fig. 1 is a schematic perspective view of a large curved LED screen according to the present invention.

Fig. 2 is a first schematic diagram of the segmentation of the large curved LED screen according to the present invention.

FIG. 3 is a second schematic diagram of the segmentation of the large curved LED screen according to the present invention.

Fig. 4 is a schematic front view of a trapezoidal LED screen module according to the present invention.

Fig. 5 is a schematic front view of a pentagonal LED screen module according to the present invention.

FIG. 6 is a schematic front view of a triangular LED screen module according to the present invention.

Fig. 7 is an enlarged schematic view of part III of fig. 2.

Fig. 8 is an enlarged view of part II in fig. 1.

Detailed Description

The following describes the embodiments of the present invention with reference to the drawings.

The invention is described by taking the formation of a large hemispherical LED screen as an example, but not limited to this, and large curved LED display screens of various shapes can be formed according to the method of the invention.

A large hemispherical LED screen model with a diameter D of 20 meters was first created using software, as shown in fig. 1.

As shown in fig. 2, a plane of a horizontal cross-sectional circle with a diameter D of 20 meters is defined as an equatorial plane 1, the large spherical LED screen is divided into an upper part and a lower part by the equatorial plane 1, an arc surface of the large spherical LED screen model is divided into a plurality of LED screen module bands 2 with equal heights in a two-way upward and downward direction from the equatorial plane 1, the heights are the widths of the arc surfaces of the LED screen module bands 2, the heights are defined as 1 st, 2 … … th, X +1 … … th, 59 th from the equatorial plane 1 upward, the heights are defined as negative 1 st, negative 2 nd 2 … … negative X, negative X +1 st 1 … … negative 24 th from the equatorial plane 1, and the height of each LED screen module band 2 is 263.54mm, and specific values are shown in table 1 below.

The division from the equatorial plane 1 down will be described in detail below, and the division up and down is symmetrical and can be done using the same procedure.

Because the oversize of large-scale sphere LED screen, when cutting apart to the bottom position, can produce the undersize, can't make LED screen module, consequently when the partition, need carry out the partition of different quantity many times, concrete partition process as follows:

firstly, on the 1 st LED screen module band 2, the 1 st LED screen module band 2 is equally divided into an even number a of first trapezoidal LED screen modules 3, that is, 120 first trapezoidal LED screen modules 3 with the same size, by using an angle of 1.5 degrees, which is the fixed angle a. Specifically, adopt 1.5 degree angle partition respectively along the upper edge in 1 st LED screen module area 2, lower limb, find out the point of 3 four apex angles of every first trapezoidal LED screen module to join together with sharp line in proper order, add thickness in three-dimensional software with the line segment of connecting, carry out both sides and stretch, can obtain the specific production size of 120 first trapezoidal LED screen modules 3 in 1 st LED screen module area 2: upper 261.8mm, lower 261.71mm, height 263.54mm as shown in figures 7 and 4.

Then, the 2 nd LED screen module band 2 is equally divided by using the same method for equally dividing the 1 st LED screen module band 2, the equally divided fixed angle a and the even number of modules a are the same, and the specific size of 120 first trapezoidal LED screen modules 3 in the 2 nd LED screen module band 2 can be obtained, which is specifically shown in the following table. By analogy, the following specific dimensions of the first trapezoidal LED screen module 3 in the LED screen module strip 2, one by one, can be obtained.

When the width of the bottom of the first trapezoid LED screen module 3 is equal to or less than 80mm, the 54 th LED screen module strip 2 in the following table is, in order to enable production, an angle of 2 times of the fixed angle a is adopted from the 55 th LED screen module strip 2 downwards, that is, the 3 th LED screen module strip 2 is equally divided into 60 LED screen modules with the same size, as shown in fig. 2 and 3, at this time, a triangular gap is formed between 120 screen modules which are equally divided and 60 screen modules which are equally divided, and therefore the LED screen modules in the 55 th LED screen module strip 2 are processed into pentagonal LED screen modules 5, as shown in fig. 5 and 8, so that the triangular gap generated in different equal time periods can be effectively solved. Starting from the 56 th LED screen module strip 2, according to the method of equally dividing the 55 th LED screen module strip 2, the second trapezoidal LED screen modules 4 with the same block size are equally divided into 60 blocks, and so on, the following specific size of the second trapezoidal LED screen module 4 in the LED screen module strip 2 one by one can be obtained.

Divide from 56 LED screen module area 2 row by row downwards equally, when 4 lower limb sizes of trapezoidal LED screen modules of second are less than 80mm again, 57 LED screen module areas in the table, then adopt 4 times fixed angle a's 6 degrees angle with 58 LED screen module area 2 equally divide into 30 LED screen modules that the size is the same, similarly, it has the triangle gap to divide 60 screen modules equally and divide 30 screen modules equally, process into pentagon LED screen module 5 with 58 LED screen module, effectively solve the triangle gap that the different time divisions produced.

Since the length of the bottom edge of the LED screen module in the 58 th LED screen module strip 2 is 88.72mm, the processing limit of the LED screen module is already approached, and the large spherical LED screen is also already approached to the center of the bottom of the curved surface, for this reason, the following parts are defined as 59 th, and the center of the curved surface is equally divided into 3 polygonal LED screen modules 6 similar to triangles by adopting an angle of 60 degrees, as shown in fig. 1, 3 and 6, and the whole curved surface LED screen is sealed.

TABLE 1

Module numbering	Upper side size (mm)	Lower edge size (mm)	Height dimension (mm)
				-24	211.16	215.17	263.54
-23	215.17	219.02	263.54
				-22	219.02	222.73	263.54
-21	222.73	226.27	263.54
				-20	226.27	229.66	263.54
-19	229.66	232.9	263.54
				-18	232.9	235.97	263.54
-17	235.97	238.87	263.54
				-16	238.87	241.61	263.54
-15	241.61	244.18	263.54
				-14	244.18	246.59	263.54
-13	246.59	248.82	263.54
				-12	248.82	250.88	263.54
-11	250.88	252.76	263.54
				-10	252.76	254.47	263.54
-9	254.47	256	263.54
				-8	256	257.36	263.54
-7	257.36	258.53	263.54
				-6	258.53	259.53	263.54
-5	259.53	260.35	263.54
				-4	260.35	260.95	263.54
-3	260.95	261.44	263.54
				-2	261.44	261.71	263.54
-1	261.71	261.8	263.54
				1	261.8	261.71	263.54
2	261.71	261.44	263.54
				3	261.44	260.98	263.54
4	260.98	260.35	263.54
				5	260.35	259.53	263.54
6	259.53	258.53	263.54
				7	258.53	257.36	263.54
8	257.36	256	263.54
				9	256	254.47	263.54
10	254.47	252.76	263.54
				11	252.76	250.88	263.54
12	250.88	248.82	263.54
				13	248.82	246.59	263.54
14	246.59	244.18	263.54
				15	244.18	241.61	263.54
16	241.61	238.87	263.54
				17	238.87	235.97	263.54
18	235.97	232.9	263.54
				19	232.9	229.66	263.54
20	229.66	226.27	263.54
				21	226.27	222.73	263.54
22	222.73	219	263.54
				23	219	215.17	263.54
24	215.17	211.16	263.54
				25	211.16	207	263.54
26	207	202.72	263.54
				27	202.72	198.28	263.54
28	198.28	193.71	263.54
				29	193.71	189	263.54
30	189	184.16	263.54
				31	184.16	179.19	263.54
32	179.19	174.1	263.54
				33	174.1	168.89	263.54
34	168.89	163.56	263.54
				35	163.56	158.12	263.54
36	158.12	152.57	263.54
				37	152.57	146.91	263.54
38	146.91	141.15	263.54
				39	141.15	135.29	263.54
40	135.29	129.34	263.54
				41	129.34	123.29	263.54
42	123.29	117.16	263.54
				43	117.16	110.96	263.54
44	110.96	104.67	263.54
				45	104.67	98.31	263.54
46	196.62	183.76	263.54
				47	183.76	170.78	263.54
48	170.78	157.67	263.54
				49	157.67	144.46	263.54
50	144.46	131.15	263.54
				51	131.15	117.74	263.54
52	117.74	104.25	263.54
				53	104.25	90.69	263.54
54	90.69	77.07	263.54
				55	154.2	126.85	263.54
56	126.85	99.42	263.54
				57	99.42	71.92	263.54
58	143.84	88.72	263.54
				59	423.5	0	442.38

The size of each LED screen module in the curved surface LED screen can be obtained through the segmentation method, each LED screen module is processed according to the size, and each LED screen module is numbered according to the number of the LED screen module.

And finally, splicing and assembling each LED screen module according to the serial number of the LED screen module belt, wherein the specific splicing and assembling can be fixed on the support frame through a connecting piece or can be fixed on the support frame through an adsorption device, and finally, the large curved surface LED screen is finished.

Claims

1. A method for forming a large curved surface LED screen comprises the following steps:

2) a plane where a cross-sectional circle with the diameter D is located is defined as an equatorial plane, an arc surface of the large spherical LED screen model is symmetrically divided into a plurality of LED screen module belts with equal heights in two directions from the equatorial plane upwards and downwards, the LED screen module belts are defined as a 1 st, a 2 nd.

when the width of the bottom of the first trapezoid LED screen module is equal to the processing size of the LED screen module, namely the X-th LED screen module belt, the X-th LED screen module belt with the bottom width smaller than the processing size of the LED screen module is equally divided by a fixed angle a which is 2 times that of the first trapezoid LED screen module, and even A/2 second trapezoid LED screen modules with the same size are formed;

LED screen modules formed in the X-th LED screen module strip in equal intervals are pentagonal, and LED screen modules formed in the X + 1-th LED screen module strip and the LED screen modules formed in the lower LED screen module strip in equal intervals are second trapezoidal LED screen modules;

the LED screen modules which are formed by equally dividing the LED screen module bands with the changed angles and the changed number are pentagonal LED screen modules which can effectively improve the triangular gaps;

2. The method for forming a large curved LED screen according to claim 1, wherein the fixed angle a is 1.5 degrees.

3. The method for forming a large curved LED screen according to claim 1, wherein the number of the LED screen modules into which the 1 st LED screen module strip is divided is 120.

4. The method for forming the large curved LED screen according to claim 1, wherein the LED screen module is processed to be 80mm in size.