JP2001073215A - Artificial flower - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain an artificial flower capable of folding a petal part, or the like, and capable of making a surface to emit light, having high decorativeness for emerging itself by own illumination in nighttime darkness, or the like, by composing the petal part, or the like, of an electro luminescent material. SOLUTION: This artificial flower comprises at least one of a petal part 2, a leaf part 3 and a stem part 4 composed of an electro luminescent material having bendability. The petal part 2, the leaf part 3 and the stem part 4 composed of the electro luminescent material are colored and the petal part 2 and the leaf part 3 are detachably mounted on the stem part 4 and the electro luminescent material comprises a sheet substrate, a moisture resistant insulating layer installed on the substrate, first electrodes and second electrodes alternately arranged on the insulating layer at predetermined intervals, a dielectric layer installed on the insulating layer covering the electrodes, an illuminant layer installed on the dielectric layer and a transparent insulating layer installed on the illuminant layer.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an artificial flower using electroluminescence (hereinafter referred to as "EL" in the specification).

[0002]

2. Description of the Related Art In general, artificial flowers are artificial flowers made by imitating the shape of a flower with paper or cloth, etc., which are illuminated with lights or the like so that they can be viewed in a dark room or at night. There is.

[0003]

However, the above-mentioned conventional artificial flower does not emit light by itself, but illuminates the entire artificial flower directly or indirectly with a light or the like. However, there has been a problem that surface light emission cannot be performed one by one according to the shape of the lens, and the decorativeness is lacking.

Accordingly, an object of the present invention is to realize artificial flowers with high decorativeness by forming petals, leaves, and the like of artificial flowers by EL and causing each of the petals and leaves to emit surface light.

[0005]

According to a first aspect of the present invention, at least one of a petal part, a leaf part, and a stem part is constituted by an EL. It is an artificial flower.

According to the present invention, the petals and leaves of the artificial flower emit surface light, so that the artificial flower emerges under its own lighting in a darkened room or at night and has high decorativeness.

According to a second aspect of the present invention, there is provided an artificial flower wherein at least one of a petal portion, a leaf portion, and a stem portion is formed of a bendable EL.

According to the present invention, the petals, leaves, and stems can be made closer to shapes that are more natural.

According to a third aspect of the present invention, in the artificial flower according to the first or second aspect, a color is applied to a leaf portion and a stem portion of the petal portion constituted by EL.

In the present invention as well, the colors of petals, leaves and stems can be made closer to natural ones.

According to a fourth aspect of the present invention, in the artificial flower according to any one of the first to third aspects, the petals and leaves are:
It is characterized by being detachably attached to the stem.

According to the present invention, it is easy to repair or replace petals or leaves of different types.

According to a fifth aspect of the present invention, in the artificial flower according to any one of the first to third aspects, the EL includes a sheet-like substrate and a moisture-resistant insulating layer provided on the substrate. A first and a second electrode alternately arranged on the same surface with a predetermined gap therebetween on the insulating layer, and on the insulating layer so as to cover the first and the second electrodes. It is characterized by including a provided dielectric layer, a light emitting layer provided on the dielectric layer, and a transparent insulating layer provided on the light emitting layer.

According to the present invention, since the entire EL can be bent, it can be easily formed so as to resemble petals and leaves of various kinds of flowers.

[0015]

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, an embodiment of an artificial flower according to the present invention will be described in detail with reference to the accompanying drawings. 1 and 2
Shows an artificial flower according to the embodiment. The artificial flower 1 shown here is constituted by a petal part 2, a leaf part 3, and a stem part 4, but all of these parts can be formed by EL, and of course, only a part of the artificial flower 1 must be formed by EL. Is also possible. In the case where the petals 2 and the leaves 3 are formed by EL, as shown in FIG. With a structure that can be attached and detached simply by inserting 6,
The petals 2 and leaves 3 can be easily replaced by other different types. An EL driving unit 8 is housed in the bowl 7. The driving unit 8 continuously turns on the EL,
Alternatively, a circuit portion for intermittently or intermittently turning on a light, a sensor circuit for automatically turning on light when a predetermined darkness is obtained, and the like are stored.

When the petals 2 and the leaves 3 are made of EL, the EL has a sectional structure as shown in FIG. That is, the EL 10 is provided with an insulating layer 12 having moisture resistance on a bendable sheet-like base material 11 and forming the first and second electrodes 13 and 14 on the insulating layer 12 with a predetermined gap. A dielectric layer 15 is formed by printing on the insulating layer 12 so as to cover the first and second electrodes 13 and 14 alternately, and a light emitting layer 16 and a transparent insulating layer 17 are formed thereon. They are provided in layers.

The sheet-like substrate 11 is formed of a foldable material such as cloth or paper, so that the shape of the petals 2 and the shape of the leaves 3 can be freely created. The type, weave, and roughness of the fabric are not particularly limited, and a non-woven fabric may be used. It should be noted that the type of paper, the type, the material, and the like of Western paper and Japanese paper are not limited at all.

Due to the nature of the sheet-like base material 11, fine irregularities are formed on the surface, and fine holes are formed particularly in the case of cloth. For this purpose, the surface of the sheet-shaped base material 11 is coated with a fluororesin to smooth out the irregularities and fine holes and to smooth the surface. A bendable insulating layer 12 is formed of a fluorine resin having such water resistance and moisture resistance, and the first and second insulating layers 12 are formed thereon.
Are formed.

The first and second electrodes 13 and 14 formed on the insulating layer 12 are not necessarily required to be transparent because both are disposed on the back side of the light emitting layer 15. The selection of materials and the method of forming the electrodes can have a wide range. For example, an electrode pattern can be formed by using various conductive metal materials as a foil, or an electrode pattern can be formed by printing using a conductive paste. First and second
The electrodes 13 and 14 are alternately arranged on the same surface of the insulating layer 12 while securing a certain gap 18 between them, and for example, a spiral electrode pattern 19 as shown in FIG.
In addition to the ladder-shaped electrode pattern 20 shown in FIG. 5, various pattern shapes can be obtained.

As shown in FIG. 3, the thickness t of the first and second electrodes 13 and 14 is preferably in the range of 0.1 to 50 μm. In the case of metal deposition, it can be made thinner than 0.1 μm, but if it is made thinner than that, the electric resistance value is undesirably increased. When a conductive paste is formed by printing, the limit is about 3 μm from the relation with the electric resistance value. On the other hand, when the thickness of the electrode becomes 50 μm or more, E
The overall thickness of L becomes large, and the significance of providing the first and second electrodes 13 and 14 on the same surface is impaired. In addition, when printing is performed using a metal foil or a conductive paste, no problem occurs even if the thickness is reduced to 50 μm or less.

The first and second electrodes 13 and 14
Is desirably set in the range of 5 to 150 μm. This is not preferable because the electrical resistance increases when the width dimension w is 5 μm or less.
This is because when the thickness is 50 μm or more, the intensity of the electric field is increased or decreased to cause uneven light emission.

As shown in FIGS. 4 and 5, a gap 18 having a constant width is secured between the first and second electrodes 13 and 14, and the gap dimension s is in the range of 30 to 300 μm. This good. This is because if the gap is narrower than 30 μm, there is a risk of short-circuit between the left and right electrodes 13 and 14 with the gap 18 interposed therebetween. This may shorten the battery life.

As described above, the metal material that can be used for the first and second electrodes 13 and 14 is not particularly limited as long as it is a metal material having good conductivity. These foils and vapor-deposited films are useful because they are conductive, have high light reflectance, and are excellent in workability and cost.

Next, first and second aluminum foils are used.
The method for forming the electrodes 13 and 14 will be described with reference to FIG.
An insulating layer (fluororesin layer) 12 is coated on a sheet-like base material 11 formed in advance according to the shape of the petals 2 and the leaves 3, and an aluminum foil is adhered on the entire surface (S1). ). Next, a resist film is printed and formed on the aluminum foil using an electrode pattern mask (S2). Next, this is etched by a known method (S3), and further, the aluminum foil in a portion where the resist film is not printed is peeled off and removed (S4). Finally, the whole is thoroughly washed to remove the resist film (S5), and an electrode pattern as shown in FIG. 3 or FIG. 4 is formed.

On the other hand, when the first and second electrodes 13 and 14 are formed by printing, silver powder or graphite powder having excellent conductivity is pasted and screen-printed to form both electrodes 13 and 14. Can be formed at once. Since the aluminum foil and the conductive paste can withstand bending, the EL 10 can be bent, and a curved shape conforming to the shapes of the petals 2 and the leaves 3 can be obtained. In the case where the stem 4 is formed of EL10, the stem 4 can be formed by rolling the sheet-shaped EL10 into a cylindrical shape.

The dielectric layer 15 provided so as to cover the first and second electrodes 13 and 14 is formed by screen printing barium titanate dispersed in a high dielectric resin binder. The luminescent layer 16 has zinc sulfide as a luminescent matrix, and a luminescent powder obtained by doping a small amount of an activator (metal or halogen element) into a high dielectric resin binder such as a cyanoresin compound. The dispersion material is formed by screen printing. Further, the transparent insulating layer 17 covering the above,
Those having moisture resistance are preferable, and are formed by screen printing of a PET film or a fluorine-based resin. In addition,
Although not shown, conductive patterns extend from the first and second electrodes 13 and 14, respectively, and are connected to the above-described plug portion 6. By inserting the plug portion 6 into the insertion portion 5 of the stem portion 4, a predetermined AC voltage is applied to the first and second electrodes 13 and 14 from the driving portion 8 of the pot portion 7, and the light emitting layer 16 is formed. Since the light is emitted and transmitted through the transparent insulating layer 17 and emitted, the petals 2 and the leaves 3 emit surface light.

By applying a color such as red to the petal portion 2 and green to the leaf portion 3 and the stem portion 4, the artificial flower can be made more natural. Also, the veins of the leaf part 3 can be expressed in color. The color can be formed by coloring the transparent insulating layer 17 itself of the EL 10 or performing color printing on the upper surface of the transparent insulating layer 17.

[0028]

As described above, according to the artificial flower of the present invention, at least one of the petals, leaves, and stems is EL.
The artificial flower can be made to emit surface light at each of the petals and leaves of the artificial flower, and the artificial flower emerges with its own lighting in a darkened room or at night and becomes highly decorative. .

According to the present invention, a bendable E
By using L, there is an effect that various kinds of artificial flowers can be made to resemble the real thing.

[Brief description of the drawings]

FIG. 1 is an overall view showing an embodiment of an artificial flower according to the present invention.

FIG. 2 is a partially enlarged view when the leaf portion of the artificial flower is made detachable.

FIG. 3 is a cross-sectional view showing a cross-sectional structure of EL when cut along the line AA in FIG. 2;

FIG. 4 is an explanatory diagram showing one embodiment of an electrode pattern.

FIG. 5 is an explanatory view showing another embodiment of an electrode pattern.

FIG. 6 is a process chart of an electrode pattern using an aluminum foil.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Artificial flower 2 Petal part 3 Leaf part 4 Stem part 5 Insert part 6 Plug part 10 EL (electroluminescence) 11 Sheet-like base material 12 Insulating layer 13 First electrode 14 Second electrode 15 Dielectric layer 16 Light emitting layer 17 Transparent insulating layer

Claims (5)

[Claims] 1. An artificial flower wherein at least one of a petal part, a leaf part, and a stem part is constituted by electroluminescence. 2. An artificial flower wherein at least one of a petal part, a leaf part, and a stem part is constituted by bendable electroluminescence. 3. The artificial flower according to claim 1, wherein a color is applied to a petal portion, a leaf portion, and a stem portion formed by the electroluminescence. 4. The petal part and the leaf part are detachably attached to a stem part.
4. The artificial flower according to any one of items 3 to 3. 5. The electroluminescent device according to claim 1, wherein the sheet-like base material, a moisture-resistant insulating layer provided on the base material, and a predetermined gap are alternately formed on the insulating layer on the same surface. And first and second electrodes arranged in
And a dielectric layer provided on the insulating layer so as to cover the second electrode, a light emitting layer provided on the dielectric layer, and a transparent material provided on the light emitting layer. The artificial flower according to any one of claims 1 to 3, further comprising an insulating layer.