JPH07261678A - Led display device and method for coating case of led display device - Google Patents

Abstract

PURPOSE:To provide an LED display device with which a coloring operation is easy and ink is hardly peelable and a method for coating the same. CONSTITUTION:This LED display device makes display by inserting plural pieces of LED lamps 4 into plural pieces of through-holes 5 formed at a case 3 and lighting the LED lamps of prescribed positions. This method is for coating this LED display device. Light shieldable tapes 1 having a shape to cover the light emitting surfaces and side faces of the case 3 of the LED display device and have an approximately cruciform shape are stuck to these surfaces.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an LED display device, and more particularly, to a case of the LED display device and a method for covering the same.

[0002]

2. Description of the Related Art In an LED display device, as shown in FIGS. 2 and 3, a plurality of holes penetrating a case are formed in a dot matrix form, and an LE having a lens portion at its tip is provided.
It is known that each D lamp is inserted. According to this type of LED display device, it is possible to display information such as characters and figures by lighting one of a plurality of LED lamps arranged at a predetermined position.

In the conventional LED display device, in order to improve the visibility when an LED lamp emits light, the entire case has a high reflectance of white polycarbonate or modified PP.
E () is integrally manufactured with a resin, and the periphery of the light emitting surface of the plurality of holes formed in the case and the entire side surface of the case are transferred using a roller or a printing method using a screen. Ink was applied by a method known in the art, and colored in black to improve the contrast.

Then, the colored case, the LED lamp, and the substrate 14 for controlling the light emission of the LED lamp are assembled to form an L
Manufactured ED display. Further, in order to cope with a larger display, a plurality of LED display devices are arranged vertically and horizontally in a matrix to form a large display.

[0005]

However, in the conventional LED display device, the case is colored black in order to improve the contrast. However, if the case is colored after the LED display device is assembled, ink will be applied to the LED lamp. In order to prevent this, the case itself is colored black to prevent it.

Therefore, when assembling the LED display device, the jig for assembling the LED display device and the case come into contact with each other, and particularly when forming a large-sized display device, the LED
When the display devices are arranged in a matrix, the cases come into contact with each other, the black ink applied to the cases is peeled off, the white resin material of the case is exposed, and the contrast when the LED display device lights up varies. There was a problem that was caused.

Further, when the case is colored black, since the light emitting surface and the side surface of the case are all colored by the transfer method or the printing method, the light emitting surface and the four side surfaces are coated and dried five times. There is a problem in that the work must be performed, the coloring work becomes complicated, and the ink on the colored surface is peeled off during the coloring work on one surface.

It is an object of the present invention to provide an LED display device which is easy to color and is not easily peeled off.

[0009]

In order to solve the conventional problems, the invention described in claim 1 of the present application has a structure of an LED display element, in which a plurality of through holes formed in a case are provided. LE which is displayed by inserting the LED lamp and the LED lamp, and turning on the LED lamp at a predetermined position.
In the D display device, a light-shielding tape covering the light emitting surface and the side surface of the case is attached.

On the other hand, the invention described in claim 2 of the present application is
A method for covering a case of an LED display device, wherein the LED lamp is inserted into a plurality of through holes formed in the case, and the LED lamp at a predetermined position is turned on to perform display. The method for covering a case is characterized in that a light-shielding tape having a substantially cross shape and having a shape covering the light emitting surface and the side surface of the case is attached and covered.

[0011]

In the LED display device, by using a substantially cross-shaped light-shielding tape for coloring the case, not only the light-emitting surface and the side surface of the case can be colored at the same time, but also the state of the case alone. Not only when the LED display device is assembled, but also after the LED display device is assembled, the case can be colored.

[0012]

Therefore, according to the present invention, in the LED display device, by covering the case with the tape, it becomes possible to color all the light emitting surface and the side surface of the case at the same time. As a result, in the past, the coloring process of the case required a total of 5 coloring and coating steps of the light emitting surface and the four side surfaces, and the coating and drying steps were performed once. Not only can the manufacturing process of the display device be simplified, but it is also possible to prevent the ink on the already applied surface from being peeled off during the coloring process of the other surface and lowering the contrast. Have an effect.

Further, in order to prevent ink from adhering to the LED lamp, the case itself is colored black, but by covering the case with tape, the LED lamp can be covered. Since ink does not adhere, it is possible to attach the LED display device to the case after assembling the LED display device, not only when the case is used alone. It is possible not only to prevent the ink from peeling off and lowering the contrast due to the damage to the case due to the above, but it has been impossible in the past.
Even when the display device is attached to an electronic device and used,
By exchanging the tape, it is possible to easily correct not only ink scratches but also stains.

Further, when the type of a light-shielding tape for covering the case of the LED display element, in which an adhesive layer is formed on a black material, is used, even if the tape is damaged, the color of the case is not exposed, and the tape When the surface is matt-treated, the reflectance of light on the surface of the tape is lowered, and the contrast is further improved.

[0015]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 shows an embodiment of the LED display device of the present invention, in which an adhesive material (not shown) used for pasting is applied to one surface of a black vinyl sheet, and then the LED
The sheet cut and the hole 3 are formed so as to correspond to the outer dimensions of the display device and the holes provided in the case, and the black light-shielding covering tape 2 of the LED display device 1 is formed.
To get

The coating tape 2 may be formed by using a tape having one surface coated with an adhesive material and coloring the opposite surface coated with the adhesive material. A black vinyl sheet or the like may be attached to one adhesive surface of the applied double-sided tape, and the present invention is not particularly limited to this embodiment. Next, the LED lamp 5 having a lens portion at its tip and the substrate 7 on which a circuit (not shown) for driving the LED lamp 5 is formed are soldered, and a plurality of holes are formed at positions corresponding to the LED lamp 5. The case 4 is made of a white resin made of polycarbonate so that the LED lamp 5 has a tip 4a.
The covering tape 2 is indicated by the arrow A so that the hole 3 of the covering tape 2 and the hole 6 of the case 4 correspond to each other in position after assembling with a proper space so as not to project from the hole 6. The covering tape 2 is attached to the case 4 in the direction, the portion 2a of the covering tape 2 corresponding to the side surface of the case 4 is bent, and the covering tape 2 is attached to the side surface of the case 4 to form the LED display device 1.

When the base sheet itself is black as in the case where the covering tape 2 of this embodiment is formed by applying the adhesive material to the black vinyl sheet, the covering tape 2 is attached after the LED display device 1 is assembled. The color of the covering tape 2 is not peeled off during assembly even when attached or when the case 4 is attached as a single body, and the LED display device 1 using the covering tape 2 has the case colored but the LED display device 1 It is possible to easily correct color peeling and stains of the case 4 of the LED display device 1 in use as well as during assembly.

Further, the covering tape 2 of this embodiment has a substantially cross shape capable of integrally covering the light emitting surface of the case 4 and the side surface of the case 4, so that the case 4 can be attached by a single attaching operation. Can be colored, and the manufacture of the LED display device 1 can be simplified. Further, the reflectance on the colored surface is lowered as in the case where the matte ink is applied to the colored surface of the covering tape 2 or the black surface of the base tape itself is embossed. When processed,
Diffuse reflection caused by incident light from the outside is less likely to occur, and the contrast of the LED display device 1 can be further improved.

The present invention is not limited to the contents described in the embodiments.

[Brief description of drawings]

FIG. 1 is a perspective view showing an embodiment of an LED display device of the present invention.

FIG. 2 is a front view of an LED display device.

FIG. 3 is a side view illustrating the structure of the LED display device.

[Explanation of symbols]

 1 ... LED display device 2 ... coating tape 3 ... hole 4 ... case 5 ... LED lamp 6 ... hole 7 ... substrate 10 ...・ LED display device 11 ・ ・ ・ Case 12 ・ ・ ・ LED lamp 13 ・ ・ ・ Hole 14 ・ ・ ・ Board 15 ・ ・ ・ Connector for connection

Claims (2)

[Claims] 1. An LED lamp is inserted into each of a plurality of through holes formed in a case, and the L lamp at a predetermined position is inserted.
An LED display device for displaying by turning on an ED lamp, wherein a light-shielding tape covering the light emitting surface and the side surface of the case is attached. 2. An LED lamp is inserted into each of a plurality of through-holes formed in a case, and the L lamp is placed at a predetermined position.
In the method of covering the case of an LED display device that displays by turning on an ED lamp, a light-shielding tape having a shape that covers a light emitting surface and a side surface of the case and having a substantially cross shape is attached and covered. To L
A method for covering a case of an ED display device.