CN112542096A - Spherical display screen - Google Patents
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- CN112542096A CN112542096A CN202011406346.3A CN202011406346A CN112542096A CN 112542096 A CN112542096 A CN 112542096A CN 202011406346 A CN202011406346 A CN 202011406346A CN 112542096 A CN112542096 A CN 112542096A
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- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
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Abstract
The invention discloses a spherical display screen, which comprises an upper hemisphere and a lower hemisphere, wherein the upper hemisphere is divided into a layer a of curved surface modules according to the latitude, the lower hemisphere is divided into a layer b of curved surface modules according to the latitude, a is more than 3, b is more than 3, the arc length of the curved surface module of the upper hemisphere is gradually decreased from the layer 1 to the layer a, the arc length of the curved surface module of the lower hemisphere is gradually decreased from the layer 1 to the layer b, each layer of curved surface module is divided into c units according to the longitude, c is more than 3, each unit comprises at least two box bodies, each box body is formed by splicing a plurality of triangular modules and is in a curved isosceles triangle shape, each triangular module comprises a bottom plate, a PCB (printed circuit board) and a face mask, and the bottom plate and the. The spherical display screen is divided into a plurality of isosceles triangles with curved surfaces according to the directions of longitude and latitude, the logic is simple, the installation is convenient, the radian of the spherical surface is closer to the theoretical radian, and the sphere is more circular.
Description
Technical Field
The invention relates to the technical field of LED display screens, in particular to a spherical display screen.
Background
The LED spherical display screen is an intention LED display screen, has the characteristics of multiple display splitting and high-definition undistorted display picture of an even technology, and is mainly applied to the fields of museums, science and technology museums, exhibition halls, decoration and brightening engineering and the like.
The existing spherical screen made of watermelon peel is shown in fig. 1 and is composed of a watermelon peel-shaped PCB, and the spherical screen has the advantages of visual structure, few types of PCBs and fatal defect that the south and north poles (namely the north of 45 degrees north latitude and the south of 45 degrees south latitude) can not normally play images, so that the picture utilization rate is too low or the images are seriously deformed. The reason is that pixel point arrangements of all image sources are arranged in rows and columns at present, and pixel point arrangements of north and south poles of the watermelon peel LED spherical screen are not arranged in rows and columns but arranged in a ring shape, so that the pixel point arrangements are difficult to display.
Disclosure of Invention
The invention aims to solve the technical problem of providing a spherical display screen, wherein an isosceles triangle module is adopted to form the spherical display screen, so that the problem that the south and north poles cannot normally play images is solved, and the utilization rate of the image is effectively improved.
The technical problem to be solved by the present invention is to provide a spherical display screen, which is divided into a plurality of isosceles triangles with curved surfaces according to the directions of longitude and latitude, and has the advantages of simple logic, convenient installation, more approximate spherical radian to theoretical radian, and more circular sphere.
In order to solve the technical problems, the invention provides a spherical display screen, which comprises an upper hemisphere and a lower hemisphere, wherein the upper hemisphere is divided into a layer a of curved surface modules according to the latitude, the lower hemisphere is divided into a layer b of curved surface modules according to the latitude, a is more than 3, b is more than 3, the arc length of the curved surface module of the upper hemisphere is gradually decreased from the layer 1 to the layer a, the arc length of the curved surface module of the lower hemisphere is gradually decreased from the layer 1 to the layer b, each layer of curved surface module is divided into c units according to the longitude, c is more than 3, each unit comprises at least two box bodies, each box body is formed by splicing a plurality of triangular modules and is in an isosceles curved surface triangle shape, each triangular module comprises a bottom plate, a PCB plate and a face cover, the bottom plate and the face cover are in curved surface structures, the PCB plate is arranged between the bottom plate and the face cover, the face cover is made of a, the light transmittance of the mask is 8% -15%.
As an improvement of the scheme, each unit comprises 2 box bodies which are divided into an upper box body and a lower box body, the bottom edge of the upper box body is parallel to the bottom edge of the lower box body, and one side edge of the upper box body is tightly attached to one side edge of the lower box body.
As an improvement of the scheme, each box body is formed by splicing 4 triangular modules, wherein 1 triangular module is positioned at the upper layer, 3 triangular modules are positioned at the lower layer, the bottom edge of the triangular module at the upper layer is clung to the bottom edge of the triangular module at the middle of the lower layer and is parallel to the bottom edges of the other two triangular modules at the lower layer, and the side edges of the other two triangular modules at the lower layer are clung to the side edge of the triangular module at the middle of the lower layer respectively to form a triangular structure;
wherein, the arc height of each box is equal.
In the improvement of the scheme, a and b are singular, a is 7-15, b is 7-15, and c is 50-70.
As an improvement of the scheme, the light transmittance of the mirror surface PC is 9% -12%, and the fire-retardant rating of the mirror surface PC is V0.
As an improvement of the scheme, the PCB is provided with the LED light source, the thickness of the face mask is 3-15 mm, and the distance between the face mask and the LED light source is 0.2-0.5 mm.
As an improvement of the scheme, the thickness of the face mask is 3-8 mm, and the distance between the face mask and the LED light source is 0.3-0.4 mm.
As an improvement of the scheme, the bottom plate is provided with a first mounting column and a second mounting column, one side of the face shield facing the PCB is provided with a face shield mounting column, the PCB is arranged on the second mounting column, and the face shield mounting column penetrates through the PCB and is inserted into the first mounting column so as to tightly connect the bottom plate, the PCB and the face shield.
As an improvement of the scheme, the edge of the bottom plate is provided with mounting ribs which surround the edge of the bottom plate, the second mounting column is arranged on the mounting ribs, and the first mounting column is arranged in the mounting ribs.
As an improvement of the scheme, a glue injection groove is arranged in the mounting rib and is inwards sunken along the surface of the mounting rib;
the bottom plate is further provided with heat dissipation ribs, and the second mounting columns are higher than the heat dissipation ribs, so that a preset distance is reserved between the PCB and the heat dissipation ribs.
The implementation of the invention has the following beneficial effects:
the spherical display screen provided by the invention is formed by adopting the isosceles triangle modules, so that the problem that the south and north poles cannot normally play images is solved, and the utilization rate of the picture is effectively improved.
In addition, the spherical display screen is divided into a plurality of isosceles triangles with curved surfaces according to the directions of longitude and latitude, the logic is simple, the installation is convenient, the radian of the spherical surface is closer to the theoretical radian, and the sphere is more circular.
Furthermore, the triangular module adopts mirror surface PC with the light transmittance of 8% -15% as a mask, so that the triangular module not only has the effect of protecting a screen body, but also has the effects of decoration and attractiveness. When the screen is on, the light emitted by the LED light source is emitted through the mask, and the display screen displays normally; after the screen is closed, the face mask generates mirror reflection, so that the spherical display screen is a spherical mirror artwork.
Furthermore, the thickness of the face mask and the distance between the face mask and the LED light source are designed in a matching mode, so that the influence of the face mask mounting column on light emitting is effectively avoided, and the light emitting and the attractiveness of the spherical display screen are further improved.
Drawings
FIG. 1 is a schematic diagram of a prior art spherical LED display screen;
FIG. 2 is a schematic view of a spherical display screen of the present invention;
FIG. 3 is a schematic diagram of a structure of one layer of curved modules in a spherical display screen according to the present invention;
FIG. 4 is one of the cells in the spherical display screen of the present invention;
FIG. 5 is a schematic view of a front vertical projection of the housing of the present invention;
FIG. 6 is a schematic view of a side elevation of the housing of the present invention;
FIG. 7 is a perspective view of a triangular module of the spherical display screen of the present invention;
FIG. 8 is an exploded view of the triangular module of the present invention;
FIG. 9 is a schematic view of the structure of the base plate in the triangular module of the present invention;
FIG. 10 is a schematic diagram of the light emission of the triangular module of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail with reference to the accompanying drawings.
Referring to fig. 2 to 10, the spherical display screen provided by the present invention includes an upper hemisphere and a lower hemisphere, the upper hemisphere is divided into a layer a of curved modules 4 according to latitude, the lower hemisphere is divided into a layer b of curved modules 4 according to latitude, wherein a and b are singular numbers, a > 3, b > 3, the arc length of the curved module 4 of the upper hemisphere decreases from the layer 1 to the layer a in turn, the arc length of the curved module 4 of the lower hemisphere decreases from the layer 1 to the layer b in turn, each layer of curved modules 4 is divided into c units 3 according to longitude, c > 3, each unit 3 includes at least two boxes 2, each box 2 is formed by splicing a plurality of triangular modules 1 to form a curved isosceles triangle, the triangular module 1 includes a bottom plate 11, a PCB plate 12 and a face mask 13, the bottom plate 11 and the face mask 13 are of curved structure, the PCB plate 12 is disposed between the bottom plate 11 and the face mask 13, the mask 13 is made of a PC board, and a mirror coating film is arranged on the PC board, wherein the light transmittance of the mask is 8% -15%.
It should be noted that the layer 1 of the curved surface module 4 in the upper hemisphere refers to the layer of the curved surface module 4 with the longest arc length in the upper hemisphere, that is, the layer of the curved surface module 4 closest to the equator; similarly, the layer 1 of surface modules 4 in the lower hemisphere refers to the layer of surface modules 4 in the lower hemisphere having the longest arc length, i.e., the layer of surface modules 4 closest to the equator. The arc length of the curved surface module 4 is gradually decreased layer by layer, so that the curved surface module 4 of each layer can be divided into units with equal number, and the divided units can be spliced into a sphere with the spherical radian closer to the theoretical radian.
The box body 1 is a curved isosceles triangle, that is, the front vertical projection of the box body 1 is an isosceles triangle, as shown in fig. 5, and the side vertical projection of the side of the box body 1 is a curved surface, as shown in fig. 6.
Preferably, each unit 3 comprises 2 boxes 2, which are divided into an upper box and a lower box, the bottom edge of the upper box is parallel to the bottom edge of the lower box, and one side edge of the upper box is clung to one side edge of the lower box.
Preferably, each box 2 is formed by splicing 4 triangular modules 1, wherein the arc height of each box 2 is equal. Because the box body 2 is provided with a curved surface, the arc height of the box body 2 refers to the length from the top angle of the curved surface of the box body to the arc length of the center of the bottom edge, and referring to fig. 7, the arc height is h.
Referring to fig. 5, each box 2 includes 4 triangular modules 1, wherein 1 triangular module 1 is located at the upper layer, 3 triangular modules 1 are located at the lower layer, the bottom edge of the triangular module 1 at the upper layer is clung to the bottom edge of the triangular module 1 at the middle layer at the lower layer and is parallel to the bottom edges of the other two triangular modules 1 at the lower layer, and the side edges of the other two triangular modules 1 at the lower layer are clung to the side edges of the triangular module 1 at the middle layer at the lower layer, respectively, thereby forming a triangular structure.
Preferably, c is 50 to 70, that is, the curved surface module 4 of each layer is divided into 50 to 70 units 2 according to longitude. If the number of the units divided by longitude of each layer of the curved surface module 4 is less than 50, the curved surface of each unit 2 and each triangular module 1 is larger than 7.2 degrees, firstly, the manufacturing difficulty of the triangular module 1 is increased, and the cost is higher, because the PCB in the triangular module 1 can be formed into the curved surface structure by adopting a flexible substrate, a common PCB cannot be formed, and the cost of the flexible substrate is higher; and the spliced sphere is not round enough. If the number of units divided by longitude of each layer of curved surface module 4 is greater than 70, more triangular modules 1 are needed for splicing, and the cost is increased while the installation difficulty is correspondingly increased.
Specifically, the curved surface of every layer of curved surface module 4 is 360 degrees, if every layer of curved surface module 4 divides into 50 ~ 70 units 3 according to the longitude, namely the curved surface of every unit 4 is 5.14 ~ 7.2 degrees, subdivides the curved surface to every triangle-shaped module 1, the division of above-mentioned unit 3 for corresponding triangle-shaped module 1 curved surface is easily prepared, and triangle-shaped module 1's total number is suitable, and easy concatenation, more importantly the sphere radian that the concatenation formed more closely theoretical radian, promptly the spheroid is more circular. In addition, the triangular module 1 can adopt a common PCB with lower cost, and the common PCB is fixed on the bottom plate through screws and can be pulled into a curved surface structure with 5.14-7.2 degrees.
Preferably, c is 60, that is, the surface module 4 of each layer is divided into 60 units 2 according to longitude, and the surface of each unit 4 is 6 degrees.
Specifically, the mirror coating is formed on a light emitting surface of the PC board by means of UV plating, wherein the light emitting surface is on one side of the LED light source 121 on the back surface of the PC board. The PC board is a transparent board, and after a mirror film layer is plated on the light-emitting surface of the PC board, the light transmittance of the mask is changed to 8% -15%. Preferably, the light transmittance of the mask is 9% -12%.
Referring to fig. 9, the bottom plate 11 is provided with a first mounting post 111 and a second mounting post 112, the side of the face shield 13 facing the PCB 12 is provided with a face shield mounting post 131, the PCB 12 is arranged on the second mounting post 112, and the face shield mounting post 131 penetrates through the PCB 12 and is inserted into the first mounting post 111 to form a tight connection between the bottom plate 11, the PCB 12 and the face shield 13. The PCB 12 is provided with a plurality of LED light sources 121.
Preferably, the PCB 12 is a flexible PCB 12. Because the flexible PCB 12 is high in price, the invention can also adopt a common PCB 12, and because the bottom plate 11 of the invention is of a curved surface structure, the PCB 12 is fixed on the second mounting column 112 of the bottom plate 11 through screws, so that the PCB 12 can be pulled into a spherical shape rigidly.
The face mask 13 of the invention is not only used for protecting the screen body, but also plays a role in decoration and beauty because the PCB 12 and the LED light source 121 form the screen body. When the screen is on, the light emitted by the LED light source 121 is emitted through the mask 13, and the display screen displays normally; after the screen is closed, the face mask 13 generates mirror reflection, so that the spherical display screen is a spherical mirror artwork.
In order to achieve the effect of a mirror surface and not affect bright screen, the surface of the face mask 13 of the invention needs to be smooth and flat, no flaws such as black spots, scratches and the like exist, no fixed point on the face mask 13 can be seen, and the face mask 13 needs to be of a curved surface structure, so that the face mask 13 can be made of mirror surface PC only.
The thickness of the face shield 13 and the distance between the face shield 13 and the LED light source play an important role in the display effect and the decoration effect of the spherical display screen. If the thickness of the face shield 13 is too small, and the distance between the face shield 13 and the LED light source is too small, the mirror reflection effect is affected, and the PCB 12 and the LED light source are easy to see; if the thickness of the face shield 13 is too large, the distance between the face shield 13 and the LED light source 121 is too large, which affects the screen lighting.
Preferably, the thickness of the face shield 13 is 3-15 mm, and the distance between the face shield 13 and the LED light source 121 is 0.2-0.5 mm. Preferably, the thickness of the face shield 13 is 3-8 mm, and the distance between the face shield 13 and the LED light source 121 is 0.3-0.4 mm.
Referring to fig. 10, the light emitting angle of the LED light source 121 is 120 degrees, and when the distance between the mask 13 and the LED light source is 0.2-0.5 mm, the light emitted by the LED light source 121 is not blocked by the mask mounting post 131.
In order to realize the distance between the mask 13 and the LED light source 121 within the range of 0.2-0.5 mm, the invention needs to be realized through the mutual matching of the first mounting column 111 and the mask mounting column 131. Specifically, the diameter of the mask mounting column 131 is 3-5 mm, the first mounting column 111 is provided with a mounting hole matched with the diameter of the mask mounting column 131, and the mask mounting column 131 is inserted into the mounting hole of the first mounting column 111, so that the distance between the mask 13 and the LED light source is within a preset range.
Specifically, the edge of the bottom plate 11 is provided with a mounting rib 113, the mounting rib 113 surrounds the edge of the bottom plate 11, the first mounting column 111 is arranged in the mounting rib 113, and the second mounting column 112 is arranged on the mounting rib 113.
The mounting ribs 113 are provided with glue injection grooves 114, the glue injection grooves 114 are recessed inwards along the surfaces of the mounting ribs 113, and the invention can inject glue into the glue injection grooves 114, so that the glue is adhered between the bottom plate 11 and the PCB 12, and the bottom plate 11 and the PCB 12 are hermetically connected.
In order to improve the heat dissipation effect of the display screen, the bottom plate 11 is further provided with heat dissipation ribs 115, and the second mounting posts 112 are higher than the heat dissipation ribs 115, so that a preset distance is formed between the PCB 12 and the heat dissipation ribs 115, thereby increasing the heat dissipation space between the PCB 12 and the bottom plate 11, and further improving the heat dissipation effect of the display screen.
Further, the fire rating of the mirror PC of the present invention was V0.
The spherical display screen provided by the invention is formed by adopting the isosceles triangle modules, so that the problem that the south and north poles cannot normally play images is solved, and the utilization rate of the picture is effectively improved.
In addition, the spherical display screen is divided into a plurality of isosceles triangles with curved surfaces according to the directions of longitude and latitude, the logic is simple, the installation is convenient, the radian of the spherical surface is closer to the theoretical radian, and the sphere is more circular.
Furthermore, the triangular module adopts a structure of a PC board and a mirror surface coating film to form a mask with the light transmittance of 8-15%, so that the triangular module not only has the effect of protecting the mask body, but also has the effects of decoration and attractiveness. When the screen is on, the light emitted by the LED light source is emitted through the mask, and the display screen displays normally; after the screen is closed, the face mask generates mirror reflection, so that the spherical display screen is a spherical mirror artwork.
Furthermore, the thickness of the face mask and the distance between the face mask and the LED light source are designed in a matching mode, so that the influence of the face mask mounting column on light emitting is effectively avoided, and the light emitting and the attractiveness of the spherical display screen are further improved.
Example 1
A spherical display screen comprises an upper hemisphere and a lower hemisphere, wherein the upper hemisphere is divided into layer curved surface modules according to latitudes, the lower hemisphere is divided into layer curved surface modules according to latitudes, the arc length of the upper hemisphere curved surface module is gradually decreased from the 1 st layer to the 11 th layer, the arc length of the lower hemisphere curved surface module is gradually decreased from the 1 st layer to the 7 th layer, each layer of curved surface module is formed by splicing 60X 2 boxes and is of a curved surface structure, each box is formed by splicing 4 triangular modules and is of a curved surface isosceles triangle, the diameter of the spherical display screen is 15240mm, the spherical surface of the spherical display screen is divided into triangular modules with 8640 arc heights, and the arc height of the triangular module 1 is 400 mm;
the triangular module comprises a bottom plate, a PCB (printed circuit board) and a face mask, wherein the bottom plate and the face mask are of curved surface structures, the PCB is arranged between the bottom plate and the face mask, the face mask is made of a PC (polycarbonate) plate, a mirror coating film is arranged on the PC plate, and the light transmittance of the face mask is 8% -15%.
While the invention has been described in connection with what is presently considered to be the most practical and preferred embodiment, it is to be understood that the invention is not to be limited to the disclosed embodiment, but on the contrary, is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the appended claims.
Claims (10)
1. A spherical display screen is characterized by comprising an upper hemisphere and a lower hemisphere, wherein the upper hemisphere is divided into a layer a of curved surface modules according to the latitude, the lower hemisphere is divided into a layer b of curved surface modules according to the latitude, a is larger than 3, b is larger than 3, the arc length of the curved surface module of the upper hemisphere is gradually decreased from the layer 1 to the layer a, the arc length of the curved surface module of the lower hemisphere is gradually decreased from the layer 1 to the layer b, each layer of curved surface module is divided into c units according to the longitude, c is larger than 3, each unit comprises at least two box bodies, each box body is formed by splicing a plurality of triangular modules and is in a curved surface isosceles triangle shape, the triangular module comprises a bottom plate, a PCB (printed Circuit Board) and a mask, the bottom plate and the mask are of curved surface structures, the PCB is arranged between the bottom plate and the face mask, the face mask is made of a PC board, a mirror surface coating film is arranged on the PC board, and the light transmittance of the face mask is 8% -15%.
2. The spherical display screen of claim 1, wherein each unit comprises 2 boxes, which are divided into an upper box and a lower box, the bottom edge of the upper box is parallel to the bottom edge of the lower box, and one side edge of the upper box is tightly attached to one side edge of the lower box.
3. The spherical display screen according to claim 2, wherein each box body is formed by splicing 4 triangular modules, wherein 1 triangular module is positioned at the upper layer, 3 triangular modules are positioned at the lower layer, the bottom edge of the triangular module at the upper layer is clung to the bottom edge of the triangular module at the middle of the lower layer and is parallel to the bottom edges of the other two triangular modules at the lower layer, and the side edges of the other two triangular modules at the lower layer are clung to the side edge of the triangular module at the middle of the lower layer respectively to form a triangular structure;
wherein, the arc height of each box is equal.
4. The spherical display screen of claim 1, wherein a and b are singular, a is 7-15, b is 7-15, and c is 50-70.
5. The spherical display screen of claim 1, wherein the transmittance of the mirror PC is 9% to 12%, and the fire rating of the mirror PC is V0.
6. The spherical display screen according to claim 1, wherein the PCB board is provided with the LED light source, the thickness of the face mask is 3-15 mm, and the distance between the face mask and the LED light source is 0.2-0.5 mm.
7. The spherical display screen according to claim 6, wherein the thickness of the face mask is 3-8 mm, and the distance between the face mask and the LED light source is 0.3-0.4 mm.
8. The spherical display screen of claim 7, wherein the base plate is provided with a first mounting post and a second mounting post, the side of the mask facing the PCB is provided with a mask mounting post, the PCB is arranged on the second mounting post, and the mask mounting post passes through the PCB and is inserted into the first mounting post to form a tight connection between the base plate, the PCB and the mask.
9. The spherical display screen of claim 1, wherein the edge of the base plate is provided with a mounting rib, the mounting rib surrounds the edge of the base plate, the first mounting post is disposed in the mounting rib, and the first mounting post is disposed in the mounting rib.
10. The spherical display screen of claim 9, wherein the mounting ribs are provided with glue injection grooves therein, the glue injection grooves being recessed inwardly along the surface of the mounting ribs;
the bottom plate is further provided with heat dissipation ribs, and the second mounting columns are higher than the heat dissipation ribs, so that a preset distance is reserved between the PCB and the heat dissipation ribs.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113077722A (en) * | 2021-04-19 | 2021-07-06 | 京东方科技集团股份有限公司 | Flexible OLED display screen and spherical display device |
| CN115083299A (en) * | 2022-07-21 | 2022-09-20 | 南京洛普股份有限公司 | Design method of display screen spliced along spherical surface and display screen |
| CN117174023A (en) * | 2023-11-03 | 2023-12-05 | 长春希达电子技术有限公司 | Spherical LED screen and spherical LED screen with virtual pixels |
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| JP2014038310A (en) * | 2012-07-18 | 2014-02-27 | Goto Optical Mfg Co | Method and device for displaying spherical image |
| CN104616600A (en) * | 2015-02-04 | 2015-05-13 | 深圳视爵光旭电子有限公司 | Spherical display screen |
| CN108062920A (en) * | 2017-12-29 | 2018-05-22 | 北京利亚德装备技术有限公司 | Spherical surface shows structure and with its CAVE system |
| CN211124732U (en) * | 2019-12-23 | 2020-07-28 | 陕西东康进出口有限公司 | Magnetic cork globe |
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| CN113077722A (en) * | 2021-04-19 | 2021-07-06 | 京东方科技集团股份有限公司 | Flexible OLED display screen and spherical display device |
| CN115083299A (en) * | 2022-07-21 | 2022-09-20 | 南京洛普股份有限公司 | Design method of display screen spliced along spherical surface and display screen |
| CN115083299B (en) * | 2022-07-21 | 2022-11-08 | 南京洛普股份有限公司 | Design method of display screen spliced along spherical surface and display screen |
| CN117174023A (en) * | 2023-11-03 | 2023-12-05 | 长春希达电子技术有限公司 | Spherical LED screen and spherical LED screen with virtual pixels |
| CN117174023B (en) * | 2023-11-03 | 2024-02-02 | 长春希达电子技术有限公司 | Spherical LED screen and spherical LED screen with virtual pixels |
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