JPH06218862A - Film structure - Google Patents

Abstract

PURPOSE:To develop rainbow colors in a plurality of directions against incident light. CONSTITUTION:A film structure is constituted of the transparent painting resin 4 having a predetermined refractive index and applied to the surface of an object 1 to be painted and two or more kinds of the glass beads 3 arranged in the transparent painting resin and spectrally diffracting the incident light such as solar rays to emit the same to the transparent painting resin 4 by refraction and reflection. The refractive index of the glass beads 3 is larger than that of the transparent painting resin 4 and the difference therebetween is set to 0.3-1.0.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a coating film structure that is applied to the surface of an object to be coated and refracts and reflects the sun's rays to disperse the rays into a rainbow color.

[0002]

2. Description of the Related Art Conventionally, as disclosed in Japanese Patent Laid-Open No. 62-65769, a myriad of fine glass beads are scattered and adhered on the surface of an object to be coated, and a clear layer is formed on the layer of the glass beads. A coating film structure in which a coating film is coated is known.

In this coating film structure, incident light such as sunlight is refracted on the surface of the glass beads, transmitted through the glass beads, reflected on the inner surface of the glass beads, and then refracted again on the surface of the glass beads. The incident light is split by being emitted from the glass beads. Then, this spectrum appears as a rainbow, so that the painted surface of the object to be painted is aesthetically pleasing.

[0004]

By the way, the optical path of light passing through the glass beads is determined by the refractive index of the glass beads. However, in the conventional coating film structure, the refractive index of each glass bead is uniform, so that each glass bead has a uniform refractive index. The traveling direction of the spectrum emitted from the beads is also uniform.

Therefore, in the conventional coating film structure, there is a problem that the rainbow color is generated in only one direction with respect to incident light such as sunlight, and the rainbow color is not generated in any direction other than this direction.

The present invention has been made to solve the above problems, and an object of the present invention is to provide a coating film structure which develops rainbow colors in a plurality of directions with respect to incident light.

[0007]

The invention according to claim 1 is
A coating film having a predetermined refractive index and applied to the surface to be coated and a spectroscopic means arranged in the coating film are provided, and the spectroscopic means refracts and reflects an incident light beam to emit it. There are a plurality of types of spectroscopic units, and the plurality of types of spectroscopic units are different in the direction of emitted light rays.

In the invention of claim 2, the spectroscopic means is constituted by dispersing a plurality of kinds of spectroscopic members having different refractive indexes in the coating film, and each of the spectroscopic members has the refractive index applied to the coating film. The refractive index of the film is larger than that of the film, and the difference is within the range of 0.3 to 1.0.

Further, in the invention of claim 3, at least one of the plurality of types of spectral members is formed into a spherical shape, and a reflecting layer for reflecting light rays is provided between the spectral member and the surface to be coated. It is arranged.

Further, in the invention of claim 4, the spectroscopic means comprises a spectroscopic member having a refractive index different from that of the coating film, and the spectroscopic member has an inclination angle on the side facing the surface of the coating film. Different types of inclined surfaces are provided.

[0011]

According to the first aspect of the present invention, the light rays incident on the coating film are refracted and reflected by the spectroscopic means, and the light rays emitted are dispersed in different directions.
The rainbow color is developed in multiple directions on the painted surface.

According to the invention described in claim 2,
The light rays incident on the coating film are refracted according to the refractive index of each of the spectral members, emitted in a plurality of directions, and dispersed into a plurality of directions, whereby a rainbow color is developed in a plurality of directions on the coating surface.

Further, according to the invention described in claim 3, the light rays transmitted through at least one kind of spherical spectral member are reflected by the reflecting layer and transmitted through the spherical spectral member again, whereby coating is performed. A rainbow color is developed in a plurality of directions on the surface, and a brilliance due to recursiveness gives an aesthetic appearance.

According to the invention described in claim 4,
Since the refraction directions on the surface of the spectral member are different depending on the inclination angle of the inclined surface of the spectral member, the spectral directions become plural directions, and the rainbow color is developed in plural directions on the coated surface.

[0015]

1 is a sectional view showing a first embodiment of a coating film structure according to the present invention. This coating film structure is composed of a layer of the adhesive coating 2 formed on the surface (surface to be coated) of the article to be coated 1 and a large number of fine glass beads (a spectral member) formed on the surface of the adhesive coating 2 in a single layer. 3) and a transparent coating resin (coating film) 4 formed so as to cover the glass beads 3.

The transparent coating resin 4 has a refractive index of 1.4 to
It is a chromatic or achromatic transparent coating resin with a range of 1.5. Each of the glass beads 3 has a diameter of 100 μm.
It is a transparent sphere having the following predetermined particle diameter and also has a refractive index of any of a plurality of types of refractive indexes. The refractive index of these glass beads 3 is larger than that of the transparent coating resin 4, and the difference is 0.3 to
It is set within the range of 1.0. The glass beads 3 having different refractive indexes are randomly dispersed and arranged on the surface of the adhesive coating 2.

Next, the function of the coating film structure will be described.

When white light rays (hereinafter, simply referred to as "sun rays") composed of light rays of plural kinds of wavelengths such as sunlight and illumination light are incident on the surface of the transparent coating resin 4, the incident light is the surface of the transparent coating resin 4. The light is refracted by and is transmitted through the transparent coating resin 4. This transmitted light is refracted on the surface of the glass beads 3 at an angle according to the refractive index of the glass beads 3, and the glass beads 3 are refracted.
After passing through the inside, the light is reflected on the inner surface of the glass beads 3. The reflected light reaches the surface of the glass beads 3, is refracted, and is transmitted into the transparent coating resin 4. When it reaches the surface of the transparent coating resin 4, it is refracted and emitted from the surface of the transparent coating resin 4.

As described above, the sunlight is transmitted through the transparent coating resin 4
And the surface of the glass beads 3 are refracted sequentially, but since the refraction angle varies depending on the wavelength of the light ray, a short wavelength (for example, purple) ray and a long wavelength (for example, red) ray included in the sunlight.
The optical path is deviated from the light rays of (splitting). Then, due to this deviation, a rainbow color is produced.

On the other hand, since the optical path of the sun rays depends on the refractive indexes of the transparent coating resin 4 and the glass beads 3, if the refractive indexes of the glass beads 3 are different, the outgoing angle with respect to the incident angle of the solar rays is different. For example, as shown in FIG.
When the transparent coating resin 4 has a refractive index of 1.4 and the glass beads 3 have three refractive indexes of 1.7, 1.9, and 2.2, the sunlight rays that are vertically incident on the surface of the transparent coating resin 4. When L is incident on the glass beads 3 having a refractive index of 1.7, it has an exit angle of 65 ° from the surface of the transparent coating resin 4, and when L is incident on the glass beads 3 having a refractive index of 1.9, it is from the surface of the transparent coating resin 4. Is an output angle of 60 °, and when it enters the glass beads 3 having a refractive index of 2.2, the light is split from the surface of the transparent coating resin 4 at an output angle of 41 °.

Therefore, there are a plurality of rainbow-coloring directions with respect to the incident angle of the sun's rays, and the aesthetic appearance is better than the conventional rainbow-coloring direction. In addition, since the glass beads 3 having different refractive indexes are randomly dispersed, the rainbow coloring direction does not deviate with respect to the incident angle of the sun rays, and the rainbow coloring directions are in plural directions at every part of the coated surface. Become.

Now, the reason why the difference between the refractive index of the glass beads 3 and the refractive index of the transparent coating resin 4 is set to 0.3 to 1.0 will be described.

That is, when the difference in the refractive index is less than 0.3, the refraction of light rays at the interface between the glass beads 3 and the transparent coating resin 4 becomes small, and the optical path deviation of light rays of each wavelength becomes small. The rainbow color is no longer produced. On the other hand, if the difference in the refractive index is set to exceed 1.0, the incident light is totally reflected on the boundary surface between the transparent coating resin 4 and the glass beads 3, and the coating surface becomes white and no rainbow color is formed. .

Next, a method of forming the coating film structure will be described with reference to FIG. In addition, the refractive index of the glass beads 3 is set to 1.7, 1.9, and 2.2.

1. Glass beads 3 with the above three types of refractive index
Are mixed in the same ratio and set in the spraying device M (see FIG. 3).
(State of (a)).

2. The coating material 2 for adhesion is applied to the surface of the article 1 to be coated.

3. A high DC voltage is applied by using the object to be coated 1 as an anode and the spraying device M as a cathode, and the charged glass beads 3 are electrically attracted to the object to be coated 1 and sprayed onto the adhesive coating 2. It is made to adhere (state of FIG. 3B).

4. Air is blown from the air ejection port P onto the dispersion surface of the glass beads 3 to remove the accumulated glass beads 3 to form a single layer of the glass beads 3 (FIG. 3).
(State of (c)).

5. Apply transparent coating resin 4 (Fig. 3
(State of (d)).

By forming in this way, the glass beads 3 having different refractive indexes can be randomly arranged on the adhesive coating 2. Therefore, as described above, there are a plurality of iridescent coloring directions at all points on the painted surface. Further, since the glass beads 3 which are fine spheres are electrically attracted to and adhered to the object to be coated 1, even when the object to be coated 1 is complicatedly curved, the glass beads 3 are adhered to the coating material 2 for adhesion.
It can be sprayed on and sticky.

By the way, as shown in FIG.
Alternatively, a reflective film 5 formed by a process such as aluminum vapor deposition may be provided, and the transparent adhesive coating material 2 may be applied to the surface of the reflective film 5. As a result, so-called recursiveness can be obtained in which the light returns in the direction in which it is incident. That is, as shown in FIG. 5, the incident light ray L 0 on the surface of the transparent coating resin 4 passes through the transparent coating resin 4 and the glass beads 3
The light that is incident on the glass beads 3 and is transmitted through the glass beads 3 is reflected on the reflection film 5 through the adhesive coating 2, is transmitted again through the glass beads 3 and the transparent coating resin 4, and is emitted from the surface of the transparent coating resin 4. The light is emitted at the same angle as the incident angle of L0.

In the second embodiment, iridescent color is produced in a plurality of directions with respect to the incident angle of the sun rays as in the first embodiment described above, and the recurrence causes the coated surface to shine in the irradiation direction. And the painted surface is more beautiful.

In the above description, the glass beads 3 have three types of refractive index of 1.7, 1.9 and 2.2. However, even if the glass beads 3 have two types of refractive index, four or more types. Can be

Next, a third embodiment of the coating film structure according to the present invention will be described with reference to FIG. In the third embodiment, in place of the layer of the glass beads 3 of the first embodiment, a plurality of types of triangular prisms (spectral members) 31 having different refractive indexes adhere one side surface thereof onto the adhesive coating material 2. It is lined up in the state. Further, the object to be coated 1 has a reflective film 5 formed on the surface thereof by a treatment such as aluminum vapor deposition as in the second embodiment described above. The refractive index of each prism 31 is larger than the refractive index of the transparent coating resin 4 like the glass beads 3 described above, and the difference is 0.3 to.
It is set within the range of 1.0. In addition, the prisms 31 adjacent to each other are arranged so that their refractive indexes are different.

Then, as shown in FIG. 7, the sun rays L1 incident on the surface of the transparent coating resin 4 are refracted on the surface of the transparent coating resin 4 and are transmitted through the transparent coating resin 4. The rays of each wavelength of the transmitted light are refracted at the surface of the prism 31 at an angle according to the refractive index of the prism 31 and transmitted through the prism 31,
After being reflected by the reflective film 5, it is refracted again on the surface of the prism 31 to pass through the transparent coating resin 4, and when it reaches the surface of the transparent coating resin 4, it is refracted and emitted from the surface of the transparent coating resin 4. . As a result, the rays of each wavelength of the sun's rays are spectrally dispersed to develop a rainbow color. Further, since the prisms (spectral members) 31 having different refractive indexes are arranged in parallel at random, as in the first embodiment described above, the iridescent color is formed in a plurality of directions at every place on the coated surface.

In the third embodiment, the incident light is reflected by the prism 3
Since the light is refracted by 1 and is further refracted after being reflected by the reflective film 5, a clearer rainbow color can be produced as compared with the first embodiment.

In each of the above embodiments, the spectral member is formed of only the glass beads 3 or the prisms 31, but the glass beads 3 and the prisms 31 may be mixed and arranged.

Next, a fourth embodiment of the coating film structure according to the present invention will be described with reference to FIG. In the third embodiment, instead of the layer of the glass beads 3 of the first embodiment, a spectral member 32 having a substantially sawtooth cross section is provided. Further, the article 1 to be coated has a reflective film 5 formed on the surface thereof by a process such as aluminum vapor deposition. The refractive index of the spectral member 32 is larger than the refractive index of the transparent coating resin 4 like the glass beads 3 described above, and the difference is within the range of 0.3 to 1.0. .

The spectral member 32 is formed so that the inclined surface S faces the side facing the surface of the transparent coating resin 4. Further, the spectral member 32 is formed such that the inclined surfaces S have a plurality of inclination angles and the adjacent inclined surfaces S have different inclination angles. For example, as shown in FIG. 8, an inclined surface S1 inclined to the right in the figure by an inclination angle θ1, an inclined surface S2 inclined to the left in the figure by an inclination angle θ2 (≠ θ1), the inclined surface S1, and a left side in the figure. Inclination angle θ
The inclined surfaces S3 that are inclined by 3 (≠ θ1 ≠ θ2) and the adjacent inclined surfaces S are formed so that the inclination angles are different.
Therefore, the incident light beam is refracted on the surface of the inclined surface S1, transmitted through the spectral member 32, reflected by the reflection film 5, and then reaches the surface of the inclined surface S2 and the case of reaching the surface of the inclined surface S3. Then, even if the optical paths to the surfaces of the inclined surface S2 and the inclined surface S3 are the same, the angle θA with respect to the surface of the inclined surface S2.
And the angle θB with respect to the surface of the inclined surface S3 are different. Therefore, even if the refractive index is constant, the refraction direction changes depending on the inclination angle of each of the inclined surfaces S2, S3.
The spectrum transmitted through 2 is dispersed in a plurality of directions, and iridescent colors can be developed in a plurality of directions.

In the fourth embodiment, the spectral member 32 can have only one refractive index, and the material cost of the spectral member 32 can be reduced. Further, by appropriately setting the angle of the inclined surface S, it is possible to arbitrarily set the rainbow coloring direction, and thus the degree of freedom in designing the coating film structure is increased.

[0041]

According to the present invention, since the light incident on the coating film is refracted by the spectroscopic means and is emitted in a plurality of directions to be dispersed, a rainbow color can be developed in a plurality of directions on the coating surface. Further, it is possible to provide a more beautiful appearance as compared with the conventional one that develops a rainbow color only in one direction.

Further, since the light rays that have passed through at least one kind of spherical spectral member are reflected by the reflecting layer and again pass through the spherical spectral member, the above-mentioned light rays are recurred. In addition to developing a rainbow color in the direction of, the painted surface will shine in the direction of incidence of light rays,
More beautiful.

Further, since the refraction direction on the surface of the spectral member is different depending on the inclination angle of the inclined surface of the spectral member,
Since the spectral directions are plural and the iridescent color is generated in plural directions, the refractive index of the spectral member can be made uniform, and the material cost of the spectral member can be reduced.

[Brief description of drawings]

FIG. 1 is a sectional view showing a first embodiment of a coating film structure according to the present invention.

FIG. 2 is an image diagram illustrating the operation of the first embodiment.

FIG. 3 is a schematic diagram for explaining a method for forming a coating film structure of the first embodiment, and FIG. 3 (a) shows a state in which glass beads having three kinds of refractive indexes are mixed and set in a spraying device. The same figure (b) shows the state in which glass beads are sprayed, the same figure (c) shows the state in which the glass beads that have accumulated are removed by blowing air, and the same figure (d) shows the transparent coating resin. It shows a state in which is applied.

FIG. 4 is a sectional view showing a second embodiment of the coating film structure according to the present invention.

FIG. 5 is an image diagram illustrating the operation of the second embodiment.

FIG. 6 is a partially cutaway perspective view showing a third embodiment of the coating film structure according to the present invention.

FIG. 7 is an image diagram illustrating the operation of the third embodiment.

FIG. 8 is a sectional view showing a fourth embodiment of the coating film structure according to the present invention.

[Explanation of symbols]

 1 Object to be coated 2 Adhesive paint 3 Glass beads 4 Transparent coating resin 5 Reflective film 31 Prism 32 Spectral member

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Hironori Umeda No. 3 Shinchi Fuchu-cho, Aki-gun, Hiroshima Prefecture Mazda Co., Ltd. (72) Kazuo Hironaka No. 3 Shinchi, Fuchu-cho, Aki-gun, Hiroshima Mazda Corporation (72) Inventor Tetsuya Ota 3-1, Shinchi, Fuchu-cho, Aki-gun, Hiroshima Mazda Motor Corporation

Claims (4)

[Claims] 1. A coating film having a predetermined refractive index and applied to a surface to be coated, and a spectroscopic means disposed in the coating film, wherein the spectroscopic means refracts and reflects an incident light beam. A coating film structure having a plurality of types of light-splitting units that split and emit light, and the plurality of types of light-splitting units each have different outgoing light directions. 2. The spectroscopic means is constituted by dispersing a plurality of kinds of spectroscopic members having different refractive indexes in the coating film, and each of the spectroscopic members has a refractive index larger than that of the coating film. The coating film structure according to claim 1, wherein the difference is formed in a range of 0.3 to 1.0. 3. At least one of the plurality of types of spectral members
3. The coating film structure according to claim 2, wherein the type is formed into a spherical shape, and a reflecting layer that reflects light rays is provided between the spectral member and the surface to be coated. 4. The spectroscopic means comprises a spectroscopic member having a refractive index different from that of the coating film, and the spectroscopic member comprises a plurality of kinds of inclined surfaces having different inclination angles on the side facing the surface of the coating film. The coating film structure according to claim 1, wherein