JP2001067023A - Display device having led display surface - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve visibility and design of a display surface from diagonal direction and to provide stable performance and good reliability, by using a flexible printed board and employing an LED display device held in a desired bent shape with a hard transparent resin layer adhered to its surface. SOLUTION: This display device 10 comprises a easing 16 comprising a display structure plate 18 made of rigid material such as metal and a display device body 24 comprising a display structure plate 18 made of visible-light transmissible hard material such as glass. The display structure plate 18 has a bent plate shape corresponding to a surface of a circular arc plate portion 20 of the casing 16, and is fixed to the circular arc plate portion 20 with bolts. An LED display device 14 is overlapped and fixed to the inner surface side of the display structure plate 18 with such structure. This LED display device 14 has a structure in which a hard transparent resin layer is adhered on the surface of a flexible printed board mounted with a plurality of LED elements and the transparent resin layer keeps the entire body in the bent shape.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

TECHNICAL FIELD The present invention relates to an LED (Light Emit) having a specific structure.
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a display device having an LED display surface using a display device, and more particularly, to an LED in which at least a part of a display surface on which the LED display device is disposed has a curved shape.
The present invention relates to a display device having a display surface.

[0002]

2. Description of the Related Art Conventionally, there is known a light-emitting display device in which an LED display device is mounted on a display surface and various kinds of information are displayed by turning on / off a plurality of LEDs. However, conventional LED display devices generally have a structure in which LEDs are mounted on a flat printed circuit board made of a hard insulating material such as glass or epoxy resin, so that it is difficult to mount the LED display device on a curved display surface. That is, when an LED display device is mounted on a curved display surface of a display device, a step portion or a bent portion is formed on the display surface of the LED display device as described in JP-A-6-266299. Inevitable,
Therefore, not only is the design of the display device body including the display panel deteriorated, but also it is difficult to ensure sufficient visibility when viewing the display surface from an oblique direction.

In order to deal with such a problem,
Japanese Patent Application Laid-Open No. H10-116039 proposes a display device having a structure in which a flexible LED display device, which is formed of a flexible material and which can be bent, is mounted on a curved display surface. However, in such a display device, when the LED display device is mounted on the display surface, the flexible LED display device is easily deformed unnecessarily, so that the wiring such as the bonding wire on the substrate is easily broken due to deformation. In addition, there is a problem that a special structure is required to hold the LED display device in a predetermined shape when the device is mounted on the display surface.

Further, it is conceivable that a substrate made of a hard material is previously formed in a curved shape corresponding to a curved surface shape of a display surface of a display device to which the substrate is mounted.
Since special equipment for providing a desired curved shape is required, a significant increase in manufacturing cost and a decrease in manufacturing workability are problematic, which is not practical.

[0005]

The present invention has been made in view of the above-mentioned circumstances, and an object of the present invention is to provide an LED display device which is advantageously disposed along a curved display surface. It is another object of the present invention to realize a display device having excellent visibility and design of a display surface from an oblique direction with stable performance and good reliability.

[0006]

An embodiment of the present invention which has been made to solve such a problem will be described below. In addition, each aspect described below can be adopted in any combination. Further, aspects or technical features of the present invention are described in the entire specification and the drawings without being limited to those described below.
Alternatively, it should be understood that the present invention is recognized based on the inventive concept that can be grasped by those skilled in the art from the description thereof.

A first aspect of the present invention is to provide a display device having a display surface including a curved surface portion with an LED on the display surface.
A display device equipped with a display device, wherein the LE
As the D display device, a device in which a hard transparent resin layer is applied to the surface of a flexible printed circuit board on which a plurality of LED elements are mounted, and the printed circuit board is held in a curved shape by the transparent resin layer is used. Thus, a display device having an LED display surface, wherein the LED display device is superposed and fixed on the display surface including the curved surface portion, is characterized.

In the display device having such a structure according to this aspect, a flexible printed circuit board is employed, and the LED is held in a desired curved shape by a hard transparent resin layer adhered to the surface thereof. By adopting the display device, it is possible to arrange the LED display device in an overlapping state on the display surface including the curved surface portion in an advantageous manner, and thereby, it is possible to dispose the display surface from an oblique direction. A display device excellent in visibility and design is advantageously realized. In addition, since unnecessary bending of the LED display device is prevented by the hard transparent resin layer, occurrence of troubles such as disconnection at the time of mounting work of the LED display device is reduced or prevented, and the quality of the product is improved. Stabilization and improved reliability can be achieved.

The specific structure and the like of the display device body to which the present invention is applied are not limited at all.
In addition to pole-shaped signage devices, signboards attached to wall surfaces of buildings, etc., design tables and panel devices used for product displays, or operation panel devices and display devices attached to various mechanical devices and electric appliances, etc. The present invention can be applied to a display device used in an extremely wide field. Further, the specific shape of the curved surface portion on the display surface is not particularly limited, and a spherical shape or the like can be adopted in addition to a cylindrical surface shape or an arc surface shape having a constant or changed curvature as a whole. Furthermore, the material and specific structure of the LED element in the LED display device,
The arrangement form and the like are appropriately set based on the knowledge of those skilled in the art in consideration of the performance and display contents required for the display device, and are not limited in any way. In addition, the material of the substrate of the printed circuit board needs to provide the printed circuit board with flexibility that can easily be deformed from a flat plate shape to a target curved surface shape. In addition to organic insulators such as resins and paper-based phenolic resins, flexible organic insulators such as polyester and polyimide are preferably employed in terms of moldability, insulation, cost, and the like. Then, in the present invention, for example, a resistive layer (resist) and a wiring pattern such as a copper foil are formed on the surface of the base material by a known method such as photoetching in the same manner as a known printed circuit board. Further, a printed circuit board obtained by mounting a plurality of LED elements can be suitably used. In addition, the transparent resin layer is made of a material having rigidity, transparency, and heat resistance enough to hold a printed board in a desired shape. It is preferable that a predetermined amount of elastic deformation is allowed. For example, acrylonitrile-styrene (AS), polymethyl methacrylate (PMMA), and the like can be adopted in addition to phenol resin and melamine resin, and further, curing is easy. In order to facilitate molding into a curved surface by controlling the temperature and to obtain excellent heat resistance, for example, a thermopolymerization-curable resin, a photopolymerization-curable resin, or an electron-beam-polymerization-curable resin is particularly preferably employed.

According to a second aspect of the present invention, there is provided a display device having a structure according to the first aspect, wherein:
An insulating coating layer is integrally or separately provided on the back surface of the printed circuit board constituting the display device, and the LED display device is superimposed and fixed on the surface of the display surface of the display device main body via the insulating coating layer. That is the feature. In such an embodiment, the LED display device can be mounted on the surface of the display surface of the display device body while ensuring sufficient insulation of the electric circuit for the LED display device. In addition, the LED display device is provided with a display surface of a display device superimposed on the back surface side,
It is possible to reinforce the support over a sufficiently wide range. The insulating coating layer may be formed of, for example, a resin material having high electrical insulation, and may be formed integrally with the same material as the transparent resin layer covering the surface of the printed circuit board.

According to a third aspect of the present invention, there is provided a display device having a structure according to the first aspect, wherein a display surface of the display device main body is formed of a transparent structural member, and a back side of the display surface is provided. In addition, the LED display device is overlapped and fixed. In this embodiment,
The LED display device can be mounted while being housed inside the display device main body, whereby the LED display device can be advantageously protected by the structural member.
Further, in this aspect, the LED display device can be reinforced over substantially the entire surface thereof by being superimposed on the transparent structural member constituting the display surface, and excellent strength characteristics and durability are realized. Can be done. The transparent structural member has a rigidity capable of supporting at least the LED display device with a sufficient strength, and can sufficiently transmit the display light of the LED. It can be advantageously formed of a suitable synthetic resin material or the like.

According to a fourth aspect of the present invention, there is provided a display device having a structure according to any one of the first to third aspects, wherein the display device is superimposed on the back surface of the LED display device, and is provided on the LED display device. A heat radiating member for radiating generated heat is provided. In this embodiment, stable performance and durability can be ensured even when a high-brightness LED element is employed, when exposed to heat rays such as direct sunlight, or when disposed in a high-temperature atmosphere. Is advantageously secured. As the heat dissipating member, a member formed of a material having high heat conductivity such as an aluminum alloy and having a large heat dissipating area by fins or the like is suitably employed. When a heat dissipating member made of a conductive material is employed, it is desirable to interpose an electric insulating layer between the printed circuit board of the LED display device and the heat dissipating member. Furthermore, when the LED display device is superimposed and mounted on the surface of the display surface of the display device, when the heat radiating member is mounted on the back surface of the LED display device, for example, an opening window is formed in a part of the display surface. A structure in which a heat radiating member is mounted on the back surface of the LED display device exposed through the opening window can be suitably adopted. Further, the display surface of the display device body is formed of a transparent structural member, and on the back side of the display surface,
If the LED display devices are superposed and fixed, it is possible to mount the heat dissipating member on the rear surface of the LED display device in an advantageous manner.

According to a fifth aspect of the present invention, there is provided a display device having a structure according to any one of the first to fourth aspects, wherein an opening window is formed in a part of a display surface of the display device body. A power supply lead wire of the LED display device, which is superposed and fixed on the surface of the display surface, is wired through the opening window. In this embodiment, the LE of the display device depends on the display surface.
The D display device can be favorably supported, and the power supply lead wires can be easily arranged, so that deterioration of the design due to the power supply lead wires can be advantageously avoided.

According to a sixth aspect of the present invention, there is provided a display device having a structure according to any one of the first to fifth aspects, wherein the LED display device is superposed on a surface of the LED display device. A hard transparent cover member that covers the entire surface is provided, and the cover member is fixed to the display device body. By employing such a cover member, the protection and reinforcement effects of the LED display device can be more advantageously achieved, and the LED display device can be fixed to the display device body via the cover member. Therefore, LED
The display device can be easily attached to the display device body. As the hard transparent cover member, a flat plate made of, for example, an acrylic resin and having a shape curved along the display surface of the display device is preferably employed.

According to a seventh aspect of the present invention, in the display device having the structure according to the sixth aspect, a notch-shaped mounting hole which opens toward an outer peripheral edge is provided in an outer peripheral portion of the cover member. That is the feature. According to such an embodiment, the cover member can be easily fixed to the display device by a bolt or the like inserted into the mounting hole.
The manufacture of the cover member is easy, and the cover member can be easily mounted on the display device.

According to an eighth aspect of the present invention, in the display device having the structure according to the sixth or seventh aspect, the outer peripheral edge of the cover member is folded back to the back side to integrally form the locking claw. It is characterized in that the outer peripheral edge of the LED display device is fitted and locked to the locking claw portion. In this aspect, the cover member can be easily and securely assembled to the LED display device, and the support effect and the reinforcing effect of the LED display device by the cover member can be obtained. The claws can also improve the strength of the cover member itself.

According to a ninth aspect of the present invention, in a display device having a structure according to any one of the first to eighth aspects, a cylindrical portion provided in the display device main body is provided.
An opening window extending over the entire circumference in the circumferential direction is formed, and the display surface is formed including the opening window, and the divided cylindrical portions on both sides divided on both sides in the axial direction with the opening window interposed therebetween. It is characterized by being connected and fixed to each other by a connecting member housed and disposed in the cylindrical portion and extending in the axial direction. According to this aspect, it is possible to form a continuous window in the circumferential direction while sufficiently securing the strength of the structure of the display device main body. By arranging the LED display device over the circumference, the surface substantially flush with the outer peripheral surface of the display device main body,
It is also possible to form the LED display surface continuously over the entire circumference.

[0018]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, in order to clarify the present invention more specifically, embodiments of the present invention will be described in detail with reference to the drawings.

First, FIGS. 1 to 3 show a display device 10 as a first embodiment of the present invention. The display device 10 has a half-cylindrical pole shape as a whole, and has a display surface 12 at the center of a half-cylindrical curved surface.
It has. Then, on this display surface, display of predetermined information by the LED display device 14 is performed.

More specifically, the display device 10 includes a housing 16 formed of a rigid material such as a metal and a display unit structure plate 18 formed of a visible light transmitting hard material such as a glass. An apparatus main body 24 is provided. The housing 16 has a half-cylindrical outer shape, and its interior is hollow. In addition, a substantially rectangular display window 22 as an opening window is provided penetrating inward and outward at a central portion of the arc plate portion 20 in the housing 16. On the other hand, the display part structure plate 18 has a curved plate shape corresponding to the surface of the arc plate part 20 of the housing 16, and is superimposed on the arc plate part 20 of the housing 16 from the surface side. , And are bolted at the periphery. Further, the display unit structure plate 18 has a curved rectangular plate shape that is sufficiently larger than the display window 22 of the housing 16.
6 is entirely covered with the display structure plate 18. In short, in the display device 10 of the present embodiment, the display surface of the display device main body 24 is constituted by the display unit structure plate 18.

The LED display device 14 is superposed and fixed on the inner surface side of the display portion structure plate 18 of the display device main body 24 having such a structure. As shown in FIGS. 4 to 7, the LED display device 14 has a hard transparent resin layer 30 attached to a surface of a flexible printed board 28 on which a plurality of LED elements 26 are mounted. The entire printed circuit board 28 is held in a curved shape by the transparent resin layer 30.

In such an LED display device 14, for example, a plurality of LED elements are mounted on a printed circuit board, and an uncured transparent resin is applied to the surface of a flexible flat LED mounting board. A first step of forming a first intermediate product, and b, a second intermediate product formed by curving the first intermediate product while incompletely curing the uncured transparent resin of the first intermediate product. And c) a third step of completely curing the uncured transparent resin of the second intermediate product, which can be advantageously produced by a method for producing an LED display device. Further, in this case, a fourth step of connecting a flexible terminal portion connected to the driver to the third intermediate product can also be suitably adopted.

More specifically, for example, as shown in FIGS. 8 and 9, a plurality of LED elements (26) are mounted on a flat plate-shaped printed board 28 made of a flexible material. The prepared LED mounting board is prepared. As shown in FIG. 7, for example, the printed circuit board 28 has a surface (or both front and back surfaces) of a base material 32 made of a glass cloth epoxy resin or the like.
In this case, a wiring formed of a cathode electrode 36 and an anode electrode 38 such as a printed copper foil pattern is provided via a black resist (insulating layer) 34.
Also, the LED element 2 is provided on the surface of the printed circuit board 28.
6 is fixed via a resist 34, and the power supply site of the LED element 26 is connected to a cathode electrode 36 and an anode electrode 38 by bonding wires 40 and 42, respectively. In addition, as shown in FIG. 10, the power supply path to the LED element 26 can be directly configured by the cathode electrode 36 and the anode electrode 38. Also, as shown in FIGS.
When the bonding wires 40 and 42 are employed, the bonding wires 4
In order to reduce or avoid the tensile force applied to the printed wires 28, the bonding wires 40, 42 extend in a direction perpendicular to the direction in which the printed circuit board 28 is curved.
It is desirable to arrange. Further, the arrangement positions and arrangement patterns of the plurality of LED elements 26 on the base material 32 are appropriately set according to information to be displayed by the display device 10 and the like. Furthermore, on the outer peripheral edge of the base material 32,
A plurality of (in this embodiment, a total of four) bolt insertion holes 5
8 are penetrated.

In order to make the information to be displayed by the LED device 14 clearer, for example, a contour made of a light-impermeable material is formed on the surface of the LED mounting board in an appropriate pattern. Forming is also effective. In addition, such a contour portion can be advantageously formed by printing using, for example, a black resin (manufactured by Cemedine Co., Ltd.).

Then, the transparent resin material 44 in a molten state is applied to the LED mounting board thus obtained.
The first intermediate product is obtained by coating the surface with an appropriate thickness (for example, several mm) by coating or the like. As the transparent resin material 44, for example, a light (ultraviolet) polymerization curable resin (manufactured by Toray Dow Corning Co., Ltd.) or the like can be used.

Subsequently, the first intermediate transparent resin material 44
To the appropriate curing treatment, to some extent (for example,
The second intermediate product is obtained by curving the first intermediate product into a desired shape in a cured state. When a photopolymerized curing resin is employed as the transparent resin material 44, such curing treatment is performed, for example, by irradiating ultraviolet rays for about 10 seconds.

Further, the second intermediate product is set in an appropriate mold and maintained in a curved state, and the transparent resin material 44 is maintained.
By subjecting the transparent resin material 44 to an appropriate curing treatment, the transparent resin material 44 is completely cured to obtain a third intermediate product. When a photopolymerized curable resin is used as the transparent resin material 44, the curing process is performed, for example, by further applying ultraviolet rays for 30 minutes.
Irradiation is performed for about a second.

After that, with respect to the obtained third intermediate product, a power supply flat cable 50 having a connector 48 attached thereto is connected to the wiring pad portion 46 formed on the back side of the printed circuit board 28. . If necessary, the connection between the hat portion 46 and the flat cable 50 is covered and fixed with an insulating protective material such as silicone rubber, and the back surface of the printed circuit board 28 is covered with a known insulating resin layer 52 over the entire surface. I do.

As a result, as shown in FIGS. 4 to 7, the LED display unit 54 including the printed board 28, the plurality of LED elements 26, the cured transparent resin layer 30, and the like, and the LED display unit 54 are connected to the LED display unit 54. Target LE comprising a flat cable 50 or the like as a supplied power supply lead wire
The D display device 14 is obtained.

Further, the thus obtained LED display device 14 is provided with a cover member 56 superposed on the surface thereof. The cover member 56 is a hard transparent thin plate, for example, is formed of an acrylic resin or the like, and has a rectangular plate shape larger than the LED display device 14. As shown in FIGS. 11 and 12, this cover member 56
The ED display device 14 is curved in an arc plate shape along the surface of the ED display device 14. Furthermore, a substantially U-shaped notch hole 6 that opens toward the outer peripheral edge portion is provided at each of the both end portions in the bending direction.
0 (a total of four in this embodiment) is formed.

The cover member 56 includes an LED.
The LED display device 14 is superimposed on the surface of the display device 14 in close contact with the LED display device 14. The device 14 and the cover member 56 are integrally fixed.

The cover member 56 to which the LED display device 14 is fixed in this manner is in close contact with the back surface of the display section structure plate 18 constituting the display device main body 24, as shown in FIGS. It is superimposed in a state,
For example, a fixture 6 for fixing the LED display device 14
2 and the like, and is fixedly attached to the display unit structure plate 18. Thereby, the light information displayed by the light emission of the LED element of the LED display device 14 is changed to the LED information.
The transparent resin layer 30 and the cover member 56 of the display device 14
, And furthermore, the display part structure plate 18 is also transmitted, so that it can be visually recognized from the outside. The display unit structure plate 18 has at least a rigidity enough to prevent deformation or the like under general use conditions, and is supported by a support frame 64 fixed behind the display unit structure plate 18. , A driver 66 for driving the LED display device 14
Etc. are supported.

Therefore, in the display device 10 having the above-described structure, the LED display device 14 has a curved shape corresponding to the display surface 12 to be mounted. It is possible to mount the display surface 12 over the entire curved display surface 12 without forming a step portion or the like, thereby exhibiting excellent design properties and displaying the display surface 12 from a side other than the front.
, Good visibility is exhibited.

Since the LED device 14 is held in a curved shape by the transparent resin layer 30,
Unnecessarily bending or bending when mounted on the display device 10 or the like is prevented, and occurrence of defects such as disconnection due to bending is effectively prevented, and excellent quality stability and reliability are achieved. Can be realized. In particular, in the present embodiment,
Since the hard cover member 56 is superimposed on the surface of the LED device 14 and the periphery of the LED device 14 is fixed to the cover member 56, unnecessary deformation of the LED device 14 is further reduced by the strength of the cover member 56. This can be advantageously prevented. In other words, by providing the cover member 56, the strength of the LED device 14 itself does not need to be set so large, and the LED device 14 has a predetermined amount of flexibility in consideration of dimensional errors and the like during manufacturing. By giving the final shape with the cover member 56, the LED device 14 can be set to a desired curved shape with higher accuracy.

Furthermore, in the display device 10 as described above, when manufacturing the LED device 14, it is not necessary to use a printed board which is previously curved and formed, and an LED mounting board having a general flat plate shape is used. Can be manufactured using a general flat-plate-shaped substrate manufacturing equipment, and the manufacturing equipment is simpler than when a printed circuit board is formed in a curved shape from the beginning. There is also an advantage that it can be manufactured at low cost.

Although the embodiment of the present invention has been described in detail, this is merely an example, and the present invention is not to be construed as being limited by the specific description in the embodiment.

For example, the size and shape of the display surface including the curved surface portion are not limited at all, and the size and structure of the display device on which such a display surface is formed are not limited at all. It is not done.

In particular, according to the present invention, it is possible to realize a display device having an annular display surface that is continuous over the entire circumference in the circumferential direction. A specific example of the display device main body is shown in FIG. Have been. In the display device main body 70, a pair of divided cylinders 72, 72 each having a bottomed cylindrical shape are axially separated from each other so as to face each other on the opening side. , 72, the axially opposite ends of a plurality of connecting rods 74, 74 disposed in the axial direction are fixed to the respective divided cylinders 72, so that the divided cylinders 72, 72 are fixedly connected to each other. Accordingly, the display device body 70 has a cylindrical display window 7 extending continuously in the circumferential direction between the opening-side facing surfaces of the pair of divided cylindrical bodies 72, 72.
6 are formed. That is, even in such a display window 76, according to the first embodiment, the LED display device can be disposed continuously over the entire periphery thereof. A 360-degree cylindrical information display surface can be advantageously realized.

The specific application range of the display device having the structure according to the present invention is not limited at all.
In addition, all such possible applications to all devices and fields are included in the scope of the present invention. Note that specific examples of a display device to which the present invention can be advantageously applied are briefly illustrated in FIGS. That is, the display device 80 shown in FIG. 14 is installed at a corner portion of a building or the like, and forms a display surface 81 that is curved upward such as a plant tree 82, for example. The devices 84 and 85 are attached to the automatic door 86 and the barricade 87 at the entrance of the building to form curved display surfaces 88 and 89 on the surfaces thereof, and the display device 90 shown in FIG. Are formed as a vase table 92 on which the vase 91 is placed and a vase tray 94.
The display device 97 shown in FIG. 17 is formed as a water tank and has a curved display surface on the outer surface of the water tank. 98.

In the first embodiment, the transparent cover member 56 is not always required to be provided.
It is also possible to mount the D display device 14 directly in close contact with the display unit structure plate 18 constituting the display device 10.

Further, in the first embodiment, a part of the display device is constituted by the transparent display portion structure plate 18, and the LED display device 14 is mounted on the back surface of the display portion structure plate 18. However, it is not always necessary to provide such a transparent display portion structure plate 18, for example, on a display surface made of a light-impermeable material such as stainless steel.
The LED display devices may be mounted on top of each other from the front side.

In addition, although not enumerated one by one, the present invention
Based on the knowledge of those skilled in the art, the present invention can be implemented in a form in which various changes, modifications, improvements, and the like are made.
It goes without saying that all such embodiments are included in the scope of the present invention without departing from the spirit of the present invention.

[0043]

As is apparent from the above description, in the display device having the structure according to the present invention, since the LED display device is provided along the display surface including the curved portion, the display device is oblique. , The visibility of the display surface can be extremely advantageously secured, and the display surface can have a smooth curved shape as a whole, thereby realizing excellent design.

[Brief description of the drawings]

FIG. 1 is an explanatory plan view showing a display device as a first embodiment of the present invention.

FIG. 2 is an explanatory sectional view of the display device shown in FIG. 1 taken along the line II-II.

FIG. 3 is an explanatory rear view of the display device shown in FIG. 1;

FIG. 4 is a plan view showing an LED display device included in the display device shown in FIG.

FIG. 5 is a front view of the LED display device shown in FIG. 4;

FIG. 6 is a rear view of the LED display device shown in FIG. 4;

FIG. 7 is an enlarged explanatory view of a VII-VII section in FIG. 5;

FIG. 8 is a plan view showing a mounting substrate for manufacturing the LED display device shown in FIG.

FIG. 9 is a front view of the mounting board shown in FIG. 8;

FIG. 10 is an explanatory view corresponding to FIG. 7, showing another example of the structure of the LED display device shown in FIG. 4;

FIG. 11 is a plan view illustrating a cover member included in the display device illustrated in FIG. 1;

FIG. 12 is a front view of the cover member shown in FIG. 11;

FIG. 13 is a perspective view showing another specific example of a display device main body having a structure according to the present invention.

FIG. 14 is a perspective view illustrating one embodiment of a display device as a specific application example of the present invention.

FIG. 15 is a perspective view showing another embodiment of the display device as a specific application example of the present invention.

FIG. 16 is a perspective view showing another embodiment of the display device as a specific application example of the present invention.

FIG. 17 is a perspective view showing another embodiment of the display device as a specific application example of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Display apparatus 12 Display surface 14 LED display device 16 Housing 18 Display structure plate 22 Display window 24 Display apparatus main body

 ──────────────────────────────────────────────────続 き Continued on the front page F-term (reference)

Claims (4)

[Claims] 1. A display device in which an LED display device is mounted on a display device body having a display surface including a curved surface portion, wherein a plurality of LED elements are mounted as the LED display device. A hard transparent resin layer is adhered to the surface of a flexible printed board, and the printed board is held in a curved shape by the transparent resin layer. A display device having an LED display surface, wherein the display device is fixed by being superimposed on a display surface including the LED display surface. 2. An opening window is formed in a part of a display surface of the display device main body, and a power supply lead wire of the LED display device, which is fixed to the surface of the display surface by overlapping, is wired through the opening window. The display device according to claim 1. 3. The display device according to claim 1, further comprising: a hard transparent cover member which is superposed on the surface of the LED display device and covers the entire surface of the LED display device, and the cover member is fixed to the display device body. Or the display device according to 2. 4. An opening window extending over the entire circumference in a circumferential direction is formed in a cylindrical portion provided in the display device main body,
A connecting member that forms the display surface including the opening window, and that accommodates and arranges the divided cylindrical portions on both sides axially divided on both sides of the opening window in the cylindrical portion and extends in the axial direction; The display device according to any one of claims 1 to 3, wherein the display device is connected and fixed to each other.