JPH0627987B2 - Illuminated display sheet - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION <Industrial Application Field> The present invention relates to an electric display sheet.

In particular, the present invention relates to an electric display sheet suitable for use in displaying outdoor work such as construction work and civil engineering work, and displaying large indoor and outdoor guides and advertisements.

<Prior Art> Conventionally, various indications are provided on protective sheets or protective nets used in indoor and outdoor construction sites. It is known that these displays are usually written in paint, or they are illuminated with an electric light. The same applies to display of large indoor and outdoor guides and advertisements.

In recent years, light emitting diodes, so-called LEDs, have been used in various fields as indicator lights. For example, JP-A-61-95583 and JP-A-62-211973 describe that a light emitting diode is used as an indicator lamp for a vehicle or the like, or as a light source for displaying characters. A display device in which a light emitting diode is embedded and molded in a thin resin sheet is also known.

<Problems to be Solved by the Invention> A display plate or a display sheet using these conventional light emitting diodes as a surface light source is inflexible, or even if it is heated, the flexibility is small and bending fatigue is reduced. It was unbearable, and it was too heavy to be attached to a protective sheet or a curing sheet at a construction site or a civil engineering site, or to serve as a protective sheet or a curing sheet. Especially, it was troublesome to install it at a high place such as a construction site, and it was troublesome to carry and store.

The present invention provides an electric display sheet having sufficient flexibility, and an electric display sheet that can be used by being attached to a protective sheet or a protective net used for outdoor construction such as construction work and civil engineering work, or a protective sheet. Another object of the present invention is to provide an electric display sheet which can be used as a protective net and which can be folded freely and can be displayed day or night.

<Means for Solving the Problems> In the present invention, a cloth having a cutting strength of at least 50 kg / 3 cm and a flexible resin layer laminated thereon is used as a base cloth, and a light emitting diode is arranged on the surface according to the content of the display. The light emitting portion of the light emitting diode is exposed and the base portion is fixed to the base cloth surface by a flexible resin, and the light emitting diode has a mechanism for electrically controlling to emit light. It is an electric display sheet which is characterized by being.

In addition, in the present invention, the cloth constituting the base cloth may be a net or a net. It is preferable that the cloth has a flameproof property according to JIS Z-2150 of grade 2 or higher. First, the fabric constituting the present invention includes polyester fibers, polyamide fibers, aromatic polyamide fibers, polyvinyl alcohol fibers, cellulose acetate fibers, chemical fibers such as polyvinyl chloride fibers, cotton, plant fibers such as hemp, animal fibers and Woven fabrics, knitted fabrics, non-woven fabrics, nets, nets, and other fabrics manufactured from at least one type of fiber selected from the group consisting of metal fibers, the cutting strength of which is JISL-1096 [tensile test method for woven fabrics] ] Must be at least 50 kg / 3 cm. If the cutting strength is less than 50 kg / 3 cm, the strength will be insufficient as a protective sheet used in construction work. Further, particularly when the lighting mechanism of the present invention is directly installed on a sheet for construction work, the flameproof property measured by JIS Z-2150 [flameproofing test method for thin materials] is class 2 or higher. It is preferable to install the illumination mechanism of the present invention on the flexible cloth.

Next, a flexible resin layer is laminated on at least a portion of the above-mentioned cloth where the light emitting diode is arranged according to the displayed content in order to impart electric insulation and waterproofness. Preferably, a flexible sheet or film having flame retardancy is laminated. Specific examples of the flexible resin, for example, polyvinyl chloride, vinyl chloride copolymer, vinyl halide or copolymer such as polyvinylidene chloride, polyethylene, polypropylene such as polyolefin, polyester, polyamide, silicone resin, Examples include fusso resins, polyurethanes, flame-retardant polymers thereof, flame-retardant compositions of these polymers, natural or synthetic rubbers, or flame-retardant rubbers thereof.

As a method for laminating a resin layer on a cloth, a method of joining a sheet or a film made of the resin in advance with an adhesive, thermocompression bonding, high frequency or ultrasonic treatment, sewing with a thread, or the like is used. . As another method, there is a method of directly applying a resin liquid or a resin dispersion liquid to a cloth to form a laminate.

Then, such a laminated sheet is used as a base fabric, and the light emitting diodes are arranged on the surface thereof, for example, in the form of letters, figures, signs, pictures, etc. according to the desired display content. The arranged light emitting diodes are wired so as to have a desired lighting form, preferably a flexible material, and connected to a power source having an external control mechanism. At that time, the light emitting portion is exposed. The light emitting diode may be arranged on the fabric surface side of the base cloth or on the flexible resin layer side. However, the light emitting diode is prevented from peeling off, and electric insulation and waterproofness are perfect. Therefore, it is preferable to arrange it on the flexible resin layer side.

After arranging the light emitting diodes according to the displayed contents, the light emitting diode base is fixed to the base cotton with a flexible resin layer. Preferably, a flexible resin layer having a color tone different from the color tone of the base cloth and having electric insulation and waterproofness is used, and more preferably, a flexible sheet or film having flame retardancy is used for fixing. Representative examples of the resin used for this flexible resin layer include the series of flexible resins described above, and in particular, the same or similar resin as the flexible resin used for forming the base cloth is bonded. It is preferable in terms of strength.

For covering the base cloth, a flexible sheet, a film or a cloth is used in advance, and a method other than the method of integrating using heat fusion or an adhesive is used.
A method of applying a thermoformable resin powder and then thermoforming, a method of applying a resin solution or dispersion to form a film, and the like can also be used.

Next, the electrical display sheet of the present invention will be described with reference to the drawings. First
The figure is a schematic view of the cross-sectional structure of the electric display sheet of the present invention, in which 1 is a cloth, 2 is a flexible resin layer, 3 is a base cloth, and 4 is a base cloth.
Is a light emitting diode, 5 is a wiring, and 6 is a flexible resin layer for fixing the light emitting diode. FIG. 2 is a schematic view of the front surface of the illuminated display sheet of the present invention, and the numbers in the figure mean the same as above.

The electric display sheet of the present invention is attached to and displayed on a protective sheet, protective net, curing sheet, etc. used in outdoor construction such as construction work and civil engineering work, or as a protective sheet, protective sheet or protective net. Suitable for display. Further, it may be used for displaying a show window or the like, or may be used for displaying indoor / outdoor guidance or advertisement.

<Operation> The electric display sheet of the present invention has a cutting strength of at least 50.
A base material is made by laminating a flexible resin layer on a fabric of kg / 3 cm, and a light emitting diode is arranged on the surface according to the displayed contents to expose the light emitting portion, while the base portion is provided with the flexible resin layer. A desired lighting display form can be obtained by fixing the light emitting diode to the base cotton with the above, wiring the light emitting diode so as to provide a desired lighting form, and connecting to a power source having an external control mechanism.

The illuminated display sheet of the present invention has sufficient flexibility and bending resistance as a whole, so that it can be freely folded and is extremely excellent in terms of attachment, transportation, storage and the like.

Further, by making the color tone of the illuminated portion different from the color tone of the base cloth, it is possible to display it day or night.

<Examples> Next, embodiments of the present invention will be described with reference to specific examples, but the present invention is not limited to these examples.
The parts and% in the examples relate to the weight unless otherwise specified.

Example 1 A white pigment was added to one surface of a plain woven fabric which passed the flame-retardant class 2 and had a tensile breaking strength of 63 kg / 3 cm, an elongation of 14.5%, which was obtained by weaving polyester fiber and subjecting it to flame-retardant treatment. Plasticized polyvinyl chloride was laminated and integrated as a thin film sheet by a calendar method to prepare a base cloth having a width of 1760 mm and a length of 5100 mm.

Next, place a 50 mm light emitting diode on the polyvinyl chloride surface of the base cloth to display the name of the construction company and the symbol mark
After arranging and fixing at intervals, the light emitting diode is wired with a twisted metal wire, and the light emitting diode base and wiring are blue fluorescent pigment coloring polyvinyl chloride sheet for the company name part and red fluorescent pigment coloring for the symbol mark part Each was covered with a polyvinyl chloride sheet and bonded and fixed by a high frequency bonding method to form an electric display sheet. Then, the light emitting diodes were simultaneously turned on, the company name and the symbol mark were alternately turned on and the company name was turned on, and the symbol mark was connected to a three-system control mechanism of blinking to make a sheet for construction work.

The sheet for construction work with this electrical decoration has sufficient flexibility and bending resistance and can be stretched and used as a protective sheet at a construction site like a normal protective sheet. Through this, a clear display with a high decorative effect was achieved.

Example 2 Cutting strength 125 made of polyvinyl alcohol fiber
A chlorinated polyethylene powder mixed with a cross-linking agent was applied to one side of a protective net of kg / 3 cm in an area of 1 m x 1 m and calendered to form a polyethylene film integrated with the net to form a base cloth part. I made it. Place the light emitting diode so that the symbol mark is displayed on this base cloth part, fix it, wire it to the light emitting diode, cover the light emitting diode base with a red-based fluorescent pigment coloring polyvinyl chloride sheet, and sonicate It adhered and formed the electric display sheet. The light emitting diode was connected to the power supply of the blinking and lighting control mechanism to form a protective net for construction work. This protective net had sufficient flexibility and bending resistance and could be handled in the same manner as a normal protective net, and a clear display with a high decorative effect was obtained throughout the day and night.

<Effects of the Invention> The illuminated display sheet of the present invention has flexibility that can be folded freely, bending resistance and strength, and can impart flame retardancy, so that it can be used indoors or outdoors for construction work, civil engineering work, and the like. It can be used by attaching it to the protective sheet or protective net used in construction, or can be used by directly applying a decorative display to the protective sheet, curing sheet and protective net.
Further, it can be used as a display sheet used for indoor and outdoor guidance and advertisement. The electronic display sheet is not only easy to attach, stretch, transport, and store, but also provides a clear display with a high decorative effect throughout the day and night.

[Brief description of drawings]

FIG. 1 is a schematic diagram of a cross-sectional structure of an electric display sheet according to the present invention, and FIG. 2 is a schematic front view of the electric display sheet.
The numbers in the figure mean the following. 1 ... Cloth, 2 ... Flexible sheet, 3 ... Base cloth, 4 ... Light emitting diode, 5 ... Wiring, 6 ... Colored covering sheet,

Front Page Continuation (72) Inventor Yuji Kawajiri 3-8-2 Nihonbashi, Chuo-ku, Tokyo Kuraray Co., Ltd.

Claims (1)

[Claims] 1. A fabric having a cutting strength of at least 50 kg / 3 cm and a flexible resin layer laminated on the base fabric, on the surface of which light emitting diodes are arranged according to the displayed contents, and the light emission of the light emitting diodes is carried out. The part is exposed and the base part is fixed to the base cloth surface by a flexible resin, and the light emitting diode has a mechanism for emitting light under electrical control. Decorative display sheet.