JPH0571334U - tile - Google Patents

Abstract

(57) [Summary] [Objective] To provide a tile that emits light when irradiated with ultraviolet rays. [Structure] The structure shown in FIG. 1 (a) is provided with a light emitting layer 1a made of a glaze (glassy material) in which an inorganic phosphor is mixed on the surface of a substrate 2. In the case of FIG. 2 (b), a light emitting layer 1b containing an inorganic phosphor is formed on the surface of the base material 2 (formed by using a paint or the like in which an inorganic phosphor powder is dispersed in an appropriate medium), and light is emitted. The glaze layer 3 is laminated on the layer 1b. In FIG. 1 (c), the substrate itself is composed of a light emitting layer 1c containing an inorganic phosphor.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a tile that emits light when irradiated with ultraviolet rays.

[0002]

[Prior Art]

 Tile is made by mixing minerals such as clay and rock and crushing it into a certain shape to make a base material, and if necessary, glaze (also called glaze, mainly composed of glass) is applied and It is baked at a high temperature of over 100 degrees. Such tiles are used as a finishing material that protects the base material and gives a beautiful appearance, and is often used on the exterior walls, roofs, interior walls, floors, etc. inside and outside the building.

Tiles as finishing materials are often colored from the viewpoint of aesthetics, but conventional tiles are colored by mixing a coloring pigment to color the substrate itself, or coloring a glaze applied to the surface. It is carried out by a method such as mixing a pigment. Examples of color pigments include cobalt oxide (blue system) and tin oxide (white).

[0004]

[Problems to be solved by the device]

 However, although the conventional tiles as described above can be colored in several types depending on the type of pigment, they cannot be provided with a glittering color.

Organic fluorescent pigments have hitherto been known as paints for imparting glittering coloring. These organic fluorescent pigments are, for example, Brilliant Sulfoflavin FF (yellow) and Basic Yellow HG (yellow). Since it uses organic phosphors such as Eosin (red), Rhodamine 6G (red) and Rhodamine B (red), it has a heat resistance of at most about 200 ° C. Therefore, at the firing temperature of the tile, its fluorescent property is completely destroyed and it cannot be used for coloring the tile.

In addition, since organic phosphors are very unstable to light and have low fastness to sunlight, even if a light emitting layer of organic phosphors is provided on the surface of the tile, the tile will be exposed to sunlight throughout the day. If it is placed in a spot where it hits, the problem of fading in a very short time arises.

The present invention has been made in view of the above points, and an object thereof is to provide a tile that emits a bright fluorescent color when irradiated with ultraviolet rays and has excellent weather resistance. is there.

[0008]

[Means for Solving the Problems]

 The tile of the present invention is provided with a light emitting layer containing an inorganic phosphor in order to achieve the above object.

The tile of the present invention specifically includes the following tiles. 1. A light-emitting layer containing an inorganic phosphor and, if necessary, a glaze layer laminated on the surface of the substrate. 2. A substrate provided with a glaze layer (light emitting layer) containing an inorganic phosphor on the surface of the substrate. 3. The substrate itself is composed of a light emitting layer containing an inorganic phosphor.

[0010]

[Action]

 In the present invention, the inorganic phosphor that is mixed in the light-emitting layer of the tile has been used exclusively for lamps so far, and it is applied to the inner surface of the glass tube of the lamp, and the ultraviolet light generated in the glass tube is used. When excited, it emits fluorescence of a predetermined color.

In general, an inorganic phosphor needs to be irradiated with ultraviolet light having a higher energy intensity than that of an organic phosphor when emitting light, and unlike an organic phosphor, it is difficult to show a clear color under daylight. Therefore, conventionally, it has never been considered to use an inorganic phosphor for coloring a tile or the like.

Under such circumstances, the inventors of the present application say that the excitation of the inorganic phosphor requires higher energy than that of the organic phosphor. Focusing on the fact that it is stable and has excellent heat resistance as it is an inorganic substance, the inventors have made the present invention by considering the use of an inorganic phosphor for coloring a tile.

The inorganic phosphor used in the present invention has a weak emission intensity under normal daylight and indoor lighting, and the tile surface is slightly colored, but it should be irradiated with ultraviolet rays from an appropriate light source. It emits a bright light.

As described above, the inorganic phosphor is excellent in heat resistance, and its light emitting property is not impaired even if it is baked on the surface of the tile or, if necessary, mixed with the base material itself and baked. Even if the light emitting characteristics are slightly deteriorated, it does not matter in practical use in many cases because it is sufficient for the tiles to be colored with the naked eye in the present invention. Further, since the inorganic phosphor has a much higher fastness to sunlight than the organic phosphor, even if the tile of the present invention is placed outdoors, excellent light emitting property can be secured for a long time.

When the tile of the present invention is used, the intensity of the ultraviolet rays applied to the light emitting layer does not need to be set to be as high as when it is used for the lamp, and if it is the minimum intensity that can obtain the desired light emission. good. Also, the excitation wavelength does not necessarily have to be set so that the emission intensity is maximized, and it is desirable to use long-wavelength ultraviolet light that is harmless to the human body, so-called black light (352 nm).

The inorganic phosphor used in the present invention is not particularly limited, but for example, 3Ca₃ (PO_Four )₂ ・ Ca (F, Cl)₂ : Sb³⁺3Ca₃ (PO _Four )₂ ・ Ca (F, Cl)₂ : Sb³⁺, Mn²⁺, BaMg₂ Al₁₆O₂₇: Eu²⁺ , (Sr, Ca)_Ten(PO_Four )₆ Cl₂ : Eu²⁺, Sr_Four Al₁₄O_{twenty five}: Eu²⁺, BaMg₂ Al₁₆O₂₇: Eu²⁺Mn²⁺, CaWO_Four , CaWO_Four : Pb²⁺, Sr ₂ P₂ O₇ : Sn²⁺, Y₂ O₃ : Eu³⁺, 3.5MgO / 0.5MgF₂ GeO ₂ : Mn⁴⁺, Y (PV) O_Four : Eu³⁺, (Sr, Mg)₃ (PO_Four )₂ : Sn²⁺ , 6MgO · As₂ O_Five : Mn⁴⁺, (Ca, Sr) SiO₃ : Pb²⁺, Mn²⁺, CeMaAl₁₁O₁₉: Tb³⁺, LaPO_Four : Ce³⁺, Tb³⁺, Zn₂ SiO_Four : Mn²⁺, Sr₂ P₂ O₇ : Eu²⁺, (Ba, Sr, Mg)₃ Si₂ O₇ : Pb²⁺ , BaSi₂ O_Five : Pb²⁺Etc.

Among these phosphors, for example, BaMg ₂ Al ₁₆ O ₂₇ : Eu ²⁺ , Sr ₄ Al ₁₄ O ₂₅ : Eu ²⁺ , BaMg ₂ Al ₁₆ O ₂₇ : Eu ²⁺ , Mn ²⁺ , CeMgAl ₁₁ O ₁₉ : Aluminate-based phosphors such as Tb ³⁺ are used in three-wavelength fluorescent lamps and fluorescent lamps for copying machines, and have stable emission of blue, blue-green, green and yellow-green, respectively. Can be obtained with high efficiency.

The material for forming the tile base or the glaze and the method for manufacturing the tile in the present invention are not particularly limited, but the firing temperature after the light emitting layer is provided is the heat resistance of the inorganic phosphor to be used. It is desirable to set in consideration.

[0019]

【Example】

 1 (a), 1 (b) and 1 (c) are perspective views showing a structure of a tile according to an embodiment of the present invention. The method for manufacturing each tile described in the following embodiments is shown as an example to facilitate understanding of the invention, and the method for manufacturing the tile of the invention is not limited.

Example 1 FIG. 1 (a) is an example in which a light emitting layer 1 a was formed by applying a glaze containing an inorganic phosphor to the surface of a substrate 2. This tile is manufactured as follows, for example. 1. The rough stone is finely pulverized using a crusher, a ball mill, etc., and clay and water are added to this and kneaded. 2. A plate having a desired size is formed by press molding or the like. 3. The base material 2 formed in the step 2 is dried and calcinated. 4. A glaze containing an inorganic phosphor is prepared. The composition of the glaze is not particularly limited, but includes, for example, SiO ₂ , Al ₂ O ₃ , Na ₂ O, K ₂ O, CaO, MgO, B ₂ O _{3 and the} like. At this time, a plurality of types of glaze are prepared, each containing a different inorganic phosphor, if necessary. 5. The glaze prepared in step 4 is applied to the surface of the unglazed substrate (light-emitting layer 1a) and fired at a temperature of, for example, about 600 ° C. to obtain the tile of FIG. 1 (a).

The glaze may be applied not only uniformly on the entire surface of the base material, but also on a desired pattern. Alternatively, the substrate 2 itself may be lightly colored with a conventionally used coloring pigment, and the light emitting layer 1a containing an inorganic phosphor may be provided thereon.

Example 2 FIG. 1 (b) is an example in which a light emitting layer 1b containing an inorganic phosphor is provided on the surface of a substrate 2 and the light emitting layer 1b is protected by a glaze. This tile is manufactured, for example, as follows. 1. The rough stone is finely pulverized using a crusher, a ball mill, etc., and clay and water are added to this and kneaded. 2. A plate having a desired size is formed by press molding or the like. 3. The base material 2 formed in the step 2 is dried and calcinated. 4. A coating material in which an inorganic phosphor is mixed in a suitable dispersion medium is applied to the base material 2 in step 3 to form a light emitting layer 1b. Similar to the first embodiment, not only the entire surface of the base material 2 is applied, but a desired pattern may be drawn. 5. A glaze (glaze layer 3) is applied on the light emitting layer 1b formed in step 4 and baked at a temperature of, for example, about 600 ° C. to obtain the tile of FIG. 1 (b).

At this time, the glaze layer 3 does not necessarily have to be transparent, and in some cases, the glaze layer 3 may have a light emitting property.

Further, in FIG. 1B, the glaze layer 3 is formed on the light emitting layer. However, even if a desired pattern is drawn on the glaze layer 3 with a paint containing an inorganic phosphor and baked. good.

Further, in some cases, the glaze layer 3 of FIG. 1B may be omitted (non-glaze tile), and only the coating material containing the inorganic phosphor may be baked on the surface of the substrate 2. However, it is preferable to apply an appropriate glaze to prevent moisture, gas, etc. from entering the substrate 2.

Example 3 In the tile shown in FIG. 1 (c), the substrate itself was used as the light emitting layer 1c. This tile is manufactured, for example, as follows. 1. The rough stone is finely pulverized by using a crusher, a ball mill, etc., and clay, water, and an inorganic phosphor powder are added thereto and kneaded. 2. A plate having a desired size is formed by press molding or the like. 3. The green body formed in step 2 is fired to obtain the tile shown in FIG. 1 (c). It goes without saying that a transparent glaze may be applied to the surface of the base material if necessary.

Further, in some cases, the base material of the tiles of the first and second embodiments may be formed of the light emitting base material of the third embodiment, and a plurality of light emitting layers may be laminated.

Now, the use of the luminescent tile produced in the above-mentioned embodiment will be described with reference to some concrete examples. It goes without saying that the following specific examples do not limit the usage of the tile of the present invention.

First, FIG. 2 shows that the tile of the present invention is used as a finishing material for an outer wall of a building or an inner wall of, for example, a toilet, a bathroom, a kitchen, a dining room, etc., and is irradiated with ultraviolet rays by a black light 5a. As a result, the glittering pattern 4 vividly emerges. The tile of the present invention can also be used as a mood lighting in a room depending on the arrangement.

FIG. 3 is an example in which the line of the road 6 is formed by the tile 1 according to the present invention. When the tile 1 according to the present invention is used, the line emits light when the black light 5b is turned on at night, and it is much easier to identify the line than when the line is drawn with normal paint. Since the inorganic phosphor has high fastness to sunlight, it maintains stable emission characteristics even when used outdoors.

Further, FIG. 4 is an example in which a line on the bottom surface of the pool 7 (a line for distinguishing courses etc.) is formed by the tile of the present invention. When the tile 1 is irradiated with UV light by a waterproof black light 5c placed at an appropriate location in the water (the side wall of the pool in the example in the figure) or a black light 5d placed on the pool side, the lines will appear vividly. Go up. Of course, not only the line but also the tile of the present invention may be used to form a desired pattern on the inner wall of the pool or on the periphery thereof, which is particularly effective when the pool is used with low illumination at night. In addition, although not shown in the figure, the tile of the present invention can be used in a bath such as an open-air bath.

In the above description, the flat tiles have been described, but it goes without saying that the present invention can also be applied to tiles having curved surfaces. Further, in the above embodiment, the dedicated light source for emitting light from the tile is provided, but the dedicated light source may not necessarily be arranged depending on the application and the environment in which it is used.

[0033]

[Effect of the device]

 As described above, since the tile of the present invention includes the light emitting layer containing the inorganic phosphor, it can have a glittering color by being irradiated with ultraviolet rays. The inorganic phosphor that constitutes the light emitting layer of the present invention has excellent heat resistance and weather resistance, and maintains stable light emitting characteristics even in a harsh environment.

By providing the tile with a light emitting property, the use of the tile can be expanded and the tile can be developed from the viewpoint of aesthetics, which is unprecedented, and the industrial value of the present invention is great.

[Brief description of drawings]

1 (a), 1 (b) and 1 (c) are perspective views showing the construction of a tile according to an embodiment of the present invention.

FIG. 2 is a conceptual diagram showing an example of using a tile according to the present invention.

FIG. 3 is a conceptual diagram showing an example of using a tile according to the present invention.

FIG. 4 is a conceptual diagram showing an example of using a tile according to the present invention.

[Explanation of symbols]

 1 Tile 1a, 1b, 1c Light emitting layer 2 Base material 3 Glaze layer 4 Design 5a, 5b, 5c, 5d Black light 6 Road 7 Pool

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Tomofumi Moriyama 3-9-22 Minami, Meguro-ku, Tokyo (72) Inventor Kiyoshi Kanai 2-17-18 Hiramachi, Meguro-ku, Tokyo

Claims (4)

[Scope of utility model registration request] 1. A tile comprising a light emitting layer containing an inorganic phosphor. 2. The tile according to claim 1, wherein a light emitting layer containing an inorganic phosphor and a glaze layer are laminated on the surface of the base material. 3. The tile according to claim 1, wherein the light emitting layer comprises a glaze containing an inorganic phosphor. 4. The tile according to claim 1, wherein the substrate itself is composed of a light emitting layer containing an inorganic phosphor.