JPWO2011148947A1 - display - Google Patents

Abstract

In a display (10) in which a large number of surface-mounted light emitting diodes (11) are arranged vertically and horizontally, the surface of a back panel (12) provided with a large number of light emitting diodes (11) exposed is black and static. Electro-planting is performed, and slits (14) are formed in the back panel (12) between the rows of light-emitting diodes (11). Thereby, reflection of light at the back panel (12) is suppressed, an image is clearly displayed, and weight reduction and wind pressure reduction can be achieved.

Description

The present invention relates to a display installed on an outdoor stage or a building.

Some displays use light emitting diodes as display dots and can be used outdoors. For example, Patent Documents 1 and 2 describe specific examples.
In Patent Document 1, since the surface of the front plate member positioned on the surface of the display is painted black and the light emitting diode (LED) group is partitioned by a black frame, an image with high contrast can be displayed. In the technique described in Patent Document 2, a plurality of light emitting diodes each having a molded lens are arranged in a desired shape, and synthetic fibers containing a colorant are previously planted between the light emitting diodes. The light reflected from the viewer to the viewer side is reduced to make the display easier to see.

JP-A-2005-202301 JP-A-11-265499

However, the technique of Patent Document 1 has a problem that when light such as sunlight is reflected on the surface of the front plate member, an image displayed on the display becomes unclear.
Since the technology described in Patent Document 2 is filled with flocks (short fibers) planted on the basis of the gaps of the light emitting diodes, the reflected light is less than the technology described in Patent Document 1, but the light emitting diode has a molded lens. Because it uses a thing, the visible range of the image displayed on the display is narrow, even if it is excellent when used as a traffic signal, the angle that can be seen as a display is limited, and the field of view is narrow was there.

In the technique of Patent Document 2, since the implanted short fibers are colored with a pigment in advance, even if a black pigment is used as the pigment, there is some reflection from the smooth surface of the short fibers, for example, When sunlight shines, there is a problem that the display itself is difficult to see.
Furthermore, in the techniques of Patent Documents 1 and 2, since the entire area between adjacent light emitting diodes is blind, the object behind the display cannot be seen at all, and this display is provided outdoors. In that case, it was necessary to install the display firmly because it was directly subjected to wind pressure.

The present invention has been made in view of such circumstances, such as when the display is installed outdoors, etc., and the wind pressure received by the display is reduced, and the scenery behind the display and other patterns and colors can be seen It is a first object to provide
It is a second object of the present invention to provide a display having a wide viewing angle and less reflected light from the display surface.
A third object of the present invention is to provide a display that is easier to see than the prior art by further reducing reflection from a flocking material made of short fibers arranged in a member that fills the gap between adjacent light emitting diodes.

The display according to the first invention that meets the above object is a display in which a large number of light emitting diodes are arranged vertically and horizontally,
The surface of the back panel on which the plurality of light emitting diodes are exposed is subjected to black electrostatic flocking, and the back panel has slits formed between the rows of light emitting diodes. .

The display according to a second invention is the display according to the first invention, wherein the back panel is composed of a plurality of panel units, and the panel unit includes an LED substrate provided with a plurality of the light emitting diodes, And a surface panel member provided on the surface of the LED substrate and provided with a through-hole through which each of the light-emitting diodes penetrates.
Here, it is preferable that each light emitting diode is square when viewed from the front, and the through hole is also square when viewed from the front.

The display according to a third aspect of the present invention is the display according to the second aspect of the invention, wherein the panel unit has a rectangular shape when viewed from the front, has strip plate portions arranged in parallel, The slit is formed between them.
A display according to a fourth invention is the display according to the second or third invention, wherein the display panel has a periphery of each through-hole of the surface panel material of more than 0.5 degrees and less than 5 degrees toward the through-hole. It has an inclined surface that is inclined downward in the range.

The display according to a fifth aspect of the present invention is the display according to the first to fourth aspects of the present invention, wherein each of the light emitting diodes has a planar surface for emitting light.
In a display according to a sixth aspect of the present invention, in the display according to the fifth aspect of the invention, a surface-mount type light emitting diode whose surface emitting light is black is used for each of the light emitting diodes. In addition, this invention is applied even if the surface which emits the light of a light emitting diode is other than black (for example, white).

The display according to a seventh aspect of the present invention is the display according to the first to sixth aspects of the invention, wherein the black electrostatic flocking is performed by flocking short fibers by flocking and cutting the flocked short fibers into a predetermined length. After that, it is done by dyeing.
The display according to an eighth aspect is the display according to the third aspect, wherein the width of the slit is in the range of 0.3 to 1.7 times the width of the strip portion.
The display according to a ninth aspect is the display according to the first to eighth aspects, wherein the pitch of each light emitting diode is in the range of 9 to 30 mm.

In the display according to the present invention, the light emitting diodes are arranged vertically and horizontally on the back panel, and the slits are formed between the rows of the light emitting diodes, so that the weight of the display can be reduced.
Moreover, even if the wind hits the display, the wind pressure generated in the display can be reduced.
Then, through the slit formed in the display, objects and scenery behind the display can be visually recognized, and a special image can be formed by overlapping the display on the display.

And since black electrostatic flocking is performed on the surface of the back panel, reflection of light is suppressed on the surface of the back panel, and it is possible to prevent the display image from becoming blurred due to the reflection of light. It is.

In the display according to the present invention, the back panel is composed of a plurality of panel units, and the panel unit is provided with an LED substrate provided with a plurality of light-emitting diodes, and a through-hole through which each light-emitting diode passes is disposed on the surface of the LED substrate. In the case of having the surface panel material provided, a display having an arbitrary size can be formed by appropriately selecting the number of panel units.

In the display according to the present invention, when the panel unit has a rectangular shape when viewed from the front, and has strip plate portions arranged in parallel, and slits are formed between adjacent strip plate portions, Can be easily formed.
In the display according to the present invention, in the case where the panel unit has an inclined surface that is inclined downward in the range of more than 0.5 degrees and less than 5 degrees toward the through holes around each through hole of the panel unit, Even if strong light hits from a specific direction, the reflected light can be dispersed and the phantom caused by the reflected light can be reduced.

In the display according to the present invention, the light emitting surface of each light emitting diode is planar, so that the viewing angle of the image displayed on the display is widened.
In the display according to the present invention, when a surface-mounted light emitting diode having a black light emitting surface is used, reflected light from the light emitting diode is also reduced.

In the display according to the present invention, when black electrostatic flocking is performed by flocking short fibers by flocking, cutting the flocked short fibers into a predetermined length, and dyeing the surface, The reflectance is further reduced due to adhesion of fine dye black particles.

In the display according to the present invention, when the width of the slit is in the range of 0.3 to 1.7 times the width of the band plate portion, the mounting area of the light emitting diode can be secured and the opening area of the slit can be secured.
In the display according to the present invention, when the pitch of each light emitting diode is in the range of 9 to 30 mm, a large display can be formed. In addition, this invention is not limited to the pitch of this light emitting diode.

And in the display which concerns on this invention, when a light emitting diode has a red LED element, a blue LED element, and a green LED element in one element, it is possible to display a color image | video on a display.

(A) is a front view of the display which concerns on one Example of this invention, (B) is a top view of the back panel of the display. (A), (B) is a front view of the surface panel material and LED board of the display, respectively. (A), (B) is the partial expanded front view and partial expanded sectional view of the back panel of the display, respectively.

Subsequently, embodiments of the present invention will be described with reference to the accompanying drawings for understanding of the present invention.
As shown in FIGS. 1A and 1B, a display 10 according to an embodiment of the present invention is a video display device in which a large number of light emitting diodes 11 are arranged vertically and horizontally, and a large number of light emitting diodes 11 are provided. The surface of the back panel 12 is subjected to black electrostatic flocking.

As shown in FIGS. 1A and 1B, the display 10 includes a back panel 12, a plurality of light emitting diodes 11 provided on the surface of the back panel 12, and a controller that transmits an output signal to each light emitting diode 11. 13.
The back panel 12 has a horizontally long rectangle when viewed from the front, and a large number of light emitting diodes 11 are arranged at equal pitches vertically and horizontally on the entire front surface of the back panel 12. The arrangement pitch of the light emitting diodes 11 is 15.625 mm in this embodiment, but is not limited to this arrangement pitch and may be other arrangement pitches (for example, 9 to 30 mm pitch).

A plurality of vertically long slits 14 are formed in the back panel 12, and two slits 14 are vertically arranged between the columns of the light emitting diodes 11. The back panel 12 is reduced in weight by the slits 14, and further, wind passages are formed in the front and rear, so that the magnitude of the wind pressure generated in the back panel 12 can be suppressed.

The back panel 12 includes a plurality of panel units 15 closely arranged on the same plane, and a plurality of light emitting diodes 11 are exposed on the front surface of each panel unit 15. In the present embodiment, the back panel 12 is formed of a total of 32 panel units 15 in 2 rows and 16 rows, but more or less than 32 panel units 15 can be used. The size of the back panel can be adjusted by the number of panel units 15. Further, a fixed frame (not shown) is provided on the back surface of the back panel 12, and each panel unit 15 is attached to the fixed frame by a known screw member.

As shown in FIGS. 3A and 3B, the panel unit 15 includes an LED substrate 16 provided with a plurality of light emitting diodes 11, and a surface panel material 17 disposed in close contact with the front surface of the LED substrate 16. ing.
As shown in FIGS. 2A and 2B, the front panel member 17 and the LED substrate 16 have substantially the same shape when viewed from the front, and the front surface of the LED substrate 16 is disposed at the place where the light emitting diodes 11 are disposed ( That is, a portion excluding the exposed region of the light emitting diode) is covered with the surface panel material 17.

The front panel member 17 has a plurality of square through holes 18 formed at equal intervals in the vertical and horizontal directions when viewed from the front, and the light emitting diode 11 is in a state where the front panel member 17 and the LED substrate 16 are fixed. It is visible from the front through the through hole 18. The light emitting diode 11 is an SMD type (that is, surface mount type) chip (LED chip) having a red LED element, a blue LED element, and a green LED element, and the display 10 can display an image in color. The SMD type light emitting diode has a light emitting surface that is flat and square, and has a black color to reduce reflected light.

The front panel member 17 has a rectangular outline when viewed from the front.
In this embodiment, four strips 19 arranged in parallel are provided at intervals on the surface panel member 17, and each strip 19 is along the longitudinal direction of the surface panel member 17. A slit 20 is formed between adjacent band plate portions 19. The width of the slit 20 is in the range of 0.3 to 1.7 times the width of the band plate portion 19.
At both ends of the band plate portion 19, rectangular fixing portions 21 and 22 are formed continuously in front view, respectively. The fixing portions 21 and 22 are provided with round holes 23 and 24, respectively, and screw members for fixing the surface panel member 17 and the LED substrate 16 to the fixing frame can be inserted into the round holes 23 and 24, respectively.

A black electrostatic flocking process (for example, Japanese Patent No. 3848977) using polycarbonate, ABS resin, nylon or the like as a flocking material is performed on the entire front surface of the surface panel member 17 having a black exposed surface. In this electrostatic flocking process, black short fibers may be flocked, but in this embodiment, after performing electrostatic flocking, the short fibers are cut into a predetermined length (for example, 0.6 mm) and then short. The fiber is subjected to black coloring (dyeing). The front surface of the surface panel member 17 is in a state in which reflection of light is suppressed by this electrostatic flocking process. Therefore, even if sunlight, illumination, etc. are irradiated to the back panel 12, the display 10 can suppress reflection of light and can display an image clearly. As described above, after electrostatic flocking is performed on the surface of the surface panel member 17 and dyed black, the reflectance of light is in the range of 0.61 to 0.97%, although it varies slightly depending on the wavelength of light. It was. On the other hand, only with the black surface panel material, the reflectance of light is about 4.77 to 5.31%, and the reflectance is significantly lowered when electrostatic flocking is performed.

As shown in FIGS. 3A and 3B, the front surface of the surface panel member 17 has an angle θ around the through hole 18 toward the through hole 18 (in this embodiment, 0.5 ° <θ <5 It is inclined down at °). The light emitting diode 11 disposed in the through hole 18 has a wide viewing angle by an inclined surface around the through hole 18.
Moreover, the surface panel material 17 ensures a certain amount of thickness (in this embodiment, 1 to 2 mm) in other non-inclined portions by inclining downward around the through holes 18 toward the through holes 18. ing. Here, if the viewing angle of the light-emitting diode 11 comparable to that of the surface panel material 17 is to be secured without providing an inclined portion in the surface panel material, the entire surface panel material is the thinnest portion of the surface panel material 17, that is, It is necessary to make the thickness about the same as the outer peripheral portion of the through hole 18. In this case, the surface panel material cannot maintain strength, and cracks or the like are generated due to a small impact or the like.

As shown in FIG. 2 (B), the LED board 16 has four outlines which are rectangular in outline when viewed from the front like the front panel material 17 and are arranged in parallel with a gap therebetween. A portion 19a is provided. In the LED substrate 16, similarly to the surface panel material 17, a slit 20 a is formed between adjacent strip plate portions 19 a.
When the LED substrate 16 and the surface panel material 17 are closely arranged, the slit 20a of the LED substrate 16 is located at the same position as the slit 20 of the surface panel material 17 when viewed from the front, and forms the slit 14 of the back panel 12 (FIG. 1 (A)).
Rectangular fixing portions 21a and 22a are respectively formed continuously at both ends of the band plate portion 19a, and screw members inserted into the round holes 23 and 24 of the surface panel material 17 penetrate the fixing portions 21a and 22a. Round holes 23a and 24a are provided respectively.

As mentioned above, although the Example of this invention was described, this invention is not limited to an above-described form, The change of the conditions etc. which do not deviate from a summary are all the application scopes of this invention.
Moreover, in the said Example, although the dimension was specified and this invention was demonstrated, the display which concerns on this invention can change the dimension arbitrarily by installation conditions. For example, the light emitting diode may have a single color.

10: Display, 11: Light emitting diode, 12: Back panel, 13: Controller, 14: Slit, 15: Panel unit, 16: LED board, 17: Surface panel material, 18: Through-hole, 19, 19a: Band plate 20, 20a: slit, 21, 21a, 22, 22a: fixing part, 23, 23a, 24, 24a: round hole

The present invention relates to a display installed on an outdoor stage or a building.

Some displays use light emitting diodes as display dots and can be used outdoors. For example, Patent Documents 1 and 2 describe specific examples.
In Patent Document 1, since the surface of the front plate member positioned on the surface of the display is painted black and the light emitting diode (LED) group is partitioned by a black frame, an image with high contrast can be displayed. In the technique described in Patent Document 2, a plurality of light emitting diodes each having a molded lens are arranged in a desired shape, and synthetic fibers containing a colorant are previously planted between the light emitting diodes. The light reflected from the viewer to the viewer side is reduced to make the display easier to see.

JP-A-2005-202301 JP-A-11-265499

However, the technique of Patent Document 1 has a problem that when light such as sunlight is reflected on the surface of the front plate member, an image displayed on the display becomes unclear.
Since the technology described in Patent Document 2 is filled with flocks (short fibers) planted on the basis of the gaps of the light emitting diodes, the reflected light is less than the technology described in Patent Document 1, but the light emitting diode has a molded lens. Because it uses a thing, the visible range of the image displayed on the display is narrow, even if it is excellent when used as a traffic signal, the angle that can be seen as a display is limited, and the field of view is narrow was there.

In the technique of Patent Document 2, since the implanted short fibers are colored with a pigment in advance, even if a black pigment is used as the pigment, there is some reflection from the smooth surface of the short fibers, for example, When sunlight shines, there is a problem that the display itself is difficult to see.
Furthermore, in the techniques of Patent Documents 1 and 2, since the entire area between adjacent light emitting diodes is blind, the object behind the display cannot be seen at all, and this display is provided outdoors. In that case, it was necessary to install the display firmly because it was directly subjected to wind pressure.

The present invention has been made in view of such circumstances, such as when the display is installed outdoors, etc., and the wind pressure received by the display is reduced, and the scenery behind the display and other patterns and colors can be seen It is a first object to provide
It is a second object of the present invention to provide a display having a wide viewing angle and less reflected light from the display surface.
A third object of the present invention is to provide a display that is easier to see than the prior art by further reducing reflection from a flocking material made of short fibers arranged in a member that fills the gap between adjacent light emitting diodes.

The display according to the first invention that meets the above object is a display in which a large number of light emitting diodes are arranged vertically and horizontally,
A black electrostatic flocking process is performed on the surface of the back panel on which the plurality of light emitting diodes are exposed, and a slit is formed between the rows of the light emitting diodes on the back panel .
The back panel includes a plurality of panel units, and the panel unit is provided with an LED substrate on which a plurality of the light emitting diodes are provided, and a through-hole through which each of the light emitting diodes is disposed. Surface panel material,
And it has an inclined surface which inclines down in the range of more than 0.5 degree | times and less than 5 degree | times toward the said through-hole around each said through-hole of the said surface panel material.

Here, it is preferable that each light emitting diode is square when viewed from the front, and the through hole is also square when viewed from the front.

The display according to a second aspect of the present invention is the display according to the first aspect of the invention, wherein the panel unit has a rectangular shape when viewed from the front, and has strip plates arranged in parallel, The slit is formed between them.

The display according to a fourth aspect of the present invention is the display according to the first aspect of the present invention, wherein each of the light emitting diodes has a planar surface for emitting light.
In the display according to a fifth aspect of the present invention, in the display according to the fourth aspect of the invention, a surface-mount type light emitting diode whose surface emitting light is black is used for each of the light emitting diodes. In addition, this invention is applied even if the surface which emits the light of a light emitting diode is other than black (for example, white).

The display according to a seventh aspect of the present invention is the display according to the first to sixth aspects of the invention, wherein the black electrostatic flocking is performed by flocking short fibers by flocking and cutting the flocked short fibers into a predetermined length. After that, it is done by dyeing.
Display according to the third invention, in the display according to the second invention, the width of the slit is in the range of 0.3 to 1.7 times the width of the band plate portion.
The display according to a sixth aspect is the display according to the first aspect , wherein the pitch of each light emitting diode is in the range of 9 to 30 mm.

In the display according to the present invention, the light emitting diodes are arranged vertically and horizontally on the back panel, and the slits are formed between the rows of the light emitting diodes, so that the weight of the display can be reduced.
Moreover, even if the wind hits the display, the wind pressure generated in the display can be reduced.
Then, through the slit formed in the display, objects and scenery behind the display can be visually recognized, and a special image can be formed by overlapping the display on the display.

And since black electrostatic flocking is performed on the surface of the back panel, reflection of light is suppressed on the surface of the back panel, and it is possible to prevent the display image from becoming blurred due to the reflection of light. It is.

In the display according to the present invention, the back panel is composed of a plurality of panel units, and the panel unit is arranged on the surface of the LED substrate on which the plurality of light emitting diodes are provided, and through holes through which the respective light emitting diodes pass are arranged. because and a provided surface the panel material, by selecting the number of the panel unit properly, can form a display of any size.
Since the display according to the present invention has an inclined surface that slopes downward in the range of more than 0.5 degrees and less than 5 degrees toward the through holes around each through hole of the surface panel material, Even when strong light hits from a specific direction, the reflected light can be dispersed, and the phantom caused by the reflected light can be reduced.

In the display according to the present invention, when the panel unit has a rectangular shape when viewed from the front, and has strip plate portions arranged in parallel, and slits are formed between adjacent strip plate portions, Can be easily formed.

In the display according to the present invention, the light emitting surface of each light emitting diode is planar, so that the viewing angle of the image displayed on the display is widened.
In the display according to the present invention, when a surface-mounted light emitting diode having a black light emitting surface is used, reflected light from the light emitting diode is also reduced.

In the display according to the present invention, when black electrostatic flocking is performed by flocking short fibers by flocking, cutting the flocked short fibers into a predetermined length, and dyeing the surface, The reflectance is further reduced due to adhesion of fine dye black particles.

In the display according to the present invention, when the width of the slit is in the range of 0.3 to 1.7 times the width of the band plate portion, the mounting area of the light emitting diode can be secured and the opening area of the slit can be secured.
In the display according to the present invention, when the pitch of each light emitting diode is in the range of 9 to 30 mm, a large display can be formed. In addition, this invention is not limited to the pitch of this light emitting diode.

And in the display which concerns on this invention, when a light emitting diode has a red LED element, a blue LED element, and a green LED element in one element, it is possible to display a color image | video on a display.

(A) is a front view of the display which concerns on one Example of this invention, (B) is a top view of the back panel of the display. (A), (B) is a front view of the surface panel material and LED board of the display, respectively. (A), (B) is the partial expanded front view and partial expanded sectional view of the back panel of the display, respectively.

Subsequently, embodiments of the present invention will be described with reference to the accompanying drawings for understanding of the present invention.
As shown in FIGS. 1A and 1B, a display 10 according to an embodiment of the present invention is a video display device in which a large number of light emitting diodes 11 are arranged vertically and horizontally, and a large number of light emitting diodes 11 are provided. The surface of the back panel 12 is subjected to black electrostatic flocking.

As shown in FIGS. 1A and 1B, the display 10 includes a back panel 12, a plurality of light emitting diodes 11 provided on the surface of the back panel 12, and a controller that transmits an output signal to each light emitting diode 11. 13.
The back panel 12 has a horizontally long rectangle when viewed from the front, and a large number of light emitting diodes 11 are arranged at equal pitches vertically and horizontally on the entire front surface of the back panel 12. The arrangement pitch of the light emitting diodes 11 is 15.625 mm in this embodiment, but is not limited to this arrangement pitch and may be other arrangement pitches (for example, 9 to 30 mm pitch).

A plurality of vertically long slits 14 are formed in the back panel 12, and two slits 14 are vertically arranged between the columns of the light emitting diodes 11. The back panel 12 is reduced in weight by the slits 14, and further, wind passages are formed in the front and rear, so that the magnitude of the wind pressure generated in the back panel 12 can be suppressed.

The back panel 12 includes a plurality of panel units 15 closely arranged on the same plane, and a plurality of light emitting diodes 11 are exposed on the front surface of each panel unit 15. In the present embodiment, the back panel 12 is formed of a total of 32 panel units 15 in 2 rows and 16 rows, but more or less than 32 panel units 15 can be used. The size of the back panel can be adjusted by the number of panel units 15. Further, a fixed frame (not shown) is provided on the back surface of the back panel 12, and each panel unit 15 is attached to the fixed frame by a known screw member.

As shown in FIGS. 3A and 3B, the panel unit 15 includes an LED substrate 16 provided with a plurality of light emitting diodes 11, and a surface panel material 17 disposed in close contact with the front surface of the LED substrate 16. ing.
As shown in FIGS. 2A and 2B, the front panel member 17 and the LED substrate 16 have substantially the same shape when viewed from the front, and the front surface of the LED substrate 16 is disposed at the place where the light emitting diodes 11 are disposed ( That is, a portion excluding the exposed region of the light emitting diode) is covered with the surface panel material 17.

The front panel member 17 has a plurality of square through holes 18 formed at equal intervals in the vertical and horizontal directions when viewed from the front, and the light emitting diode 11 is in a state where the front panel member 17 and the LED substrate 16 are fixed. It is visible from the front through the through hole 18. The light emitting diode 11 is an SMD type (that is, surface mount type) chip (LED chip) having a red LED element, a blue LED element, and a green LED element, and the display 10 can display an image in color. The SMD type light emitting diode has a light emitting surface that is flat and square, and has a black color to reduce reflected light.

The front panel member 17 has a rectangular outline when viewed from the front.
In this embodiment, four strips 19 arranged in parallel are provided at intervals on the surface panel member 17, and each strip 19 is along the longitudinal direction of the surface panel member 17. A slit 20 is formed between adjacent band plate portions 19. The width of the slit 20 is in the range of 0.3 to 1.7 times the width of the band plate portion 19.
At both ends of the band plate portion 19, rectangular fixing portions 21 and 22 are formed continuously in front view, respectively. The fixing portions 21 and 22 are provided with round holes 23 and 24, respectively, and screw members for fixing the surface panel member 17 and the LED substrate 16 to the fixing frame can be inserted into the round holes 23 and 24, respectively.

A black electrostatic flocking process (for example, Japanese Patent No. 3848977) using polycarbonate, ABS resin, nylon or the like as a flocking material is performed on the entire front surface of the surface panel member 17 having a black exposed surface. In this electrostatic flocking process, black short fibers may be flocked, but in this embodiment, after performing electrostatic flocking, the short fibers are cut into a predetermined length (for example, 0.6 mm) and then short. The fiber is subjected to black coloring (dyeing). The front surface of the surface panel member 17 is in a state in which reflection of light is suppressed by this electrostatic flocking process. Therefore, even if sunlight, illumination, etc. are irradiated to the back panel 12, the display 10 can suppress reflection of light and can display an image clearly. As described above, after electrostatic flocking is performed on the surface of the surface panel member 17 and dyed black, the reflectance of light is in the range of 0.61 to 0.97%, although it varies slightly depending on the wavelength of light. It was. On the other hand, only with the black surface panel material, the reflectance of light is about 4.77 to 5.31%, and the reflectance is significantly lowered when electrostatic flocking is performed.

As shown in FIGS. 3A and 3B, the front surface of the surface panel member 17 has an angle θ around the through hole 18 toward the through hole 18 (in this embodiment, 0.5 ° <θ <5 It is inclined down at °). The light emitting diode 11 disposed in the through hole 18 has a wide viewing angle by an inclined surface around the through hole 18.
Moreover, the surface panel material 17 ensures a certain amount of thickness (in this embodiment, 1 to 2 mm) in other non-inclined portions by inclining downward around the through holes 18 toward the through holes 18. ing. Here, if the viewing angle of the light-emitting diode 11 comparable to that of the surface panel material 17 is to be secured without providing an inclined portion in the surface panel material, the entire surface panel material is the thinnest portion of the surface panel material 17, that is, It is necessary to make the thickness about the same as the outer peripheral portion of the through hole 18. In this case, the surface panel material cannot maintain strength, and cracks or the like are generated due to a small impact or the like.

As shown in FIG. 2 (B), the LED board 16 has four outlines which are rectangular in outline when viewed from the front like the front panel material 17 and are arranged in parallel with a gap therebetween. A portion 19a is provided. In the LED substrate 16, similarly to the surface panel material 17, a slit 20 a is formed between adjacent strip plate portions 19 a.
When the LED substrate 16 and the surface panel material 17 are closely arranged, the slit 20a of the LED substrate 16 is located at the same position as the slit 20 of the surface panel material 17 when viewed from the front, and forms the slit 14 of the back panel 12 (FIG. 1 (A)).
Rectangular fixing portions 21a and 22a are respectively formed continuously at both ends of the band plate portion 19a, and screw members inserted into the round holes 23 and 24 of the surface panel material 17 penetrate the fixing portions 21a and 22a. Round holes 23a and 24a are provided respectively.

As mentioned above, although the Example of this invention was described, this invention is not limited to an above-described form, The change of the conditions etc. which do not deviate from a summary are all the application scopes of this invention.
Moreover, in the said Example, although the dimension was specified and this invention was demonstrated, the display which concerns on this invention can change the dimension arbitrarily by installation conditions. For example, the light emitting diode may have a single color.

10: Display, 11: Light emitting diode, 12: Back panel, 13: Controller, 14: Slit, 15: Panel unit, 16: LED board, 17: Surface panel material, 18: Through-hole, 19, 19a: Band plate 20, 20a: slit, 21, 21a, 22, 22a: fixing part, 23, 23a, 24, 24a: round hole

Claims (9)

In a display in which a number of light emitting diodes are arranged vertically and horizontally,
The surface of the back panel on which the plurality of light emitting diodes are exposed is subjected to black electrostatic flocking, and the back panel has slits formed between the rows of light emitting diodes. A display characterized by that. 2. The display according to claim 1, wherein the back panel includes a plurality of panel units, and the panel unit is disposed on a surface of the LED substrate on which the plurality of light emitting diodes are provided, and each of the light emitting diodes. And a surface panel material provided with a through-hole through which the through-hole penetrates. 3. The display according to claim 2, wherein the panel unit has a rectangular shape when viewed from the front, has strip plate portions arranged in parallel, and the slit is formed between the adjacent strip plate portions. Display characterized by. 4. The display according to claim 2, further comprising an inclined surface that slopes downwardly in a range of more than 0.5 degrees and less than 5 degrees toward the through holes around each through hole of the surface panel material. A display characterized by being. The display according to any one of claims 1 to 4, wherein each of the light emitting diodes has a planar light emitting surface. 6. The display according to claim 5, wherein each of the light emitting diodes is a surface mount type light emitting diode having a black light emitting surface. The display according to any one of claims 1 to 6, wherein the black electrostatic flocking is performed by flocking short fibers by flocking, and cutting the flocked short fibers into a predetermined length and then dyeing the short fibers. A display characterized by what is being done. 4. The display according to claim 3, wherein the width of the slit is in the range of 0.3 to 1.7 times the width of the band plate portion. 9. The display according to claim 1, wherein a pitch of each light emitting diode is in a range of 9 to 30 mm.

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