JPH07629A - Jigsaw puzzle and sheet member - Google Patents

Abstract

PURPOSE:To provide a jigsaw puzzle and a sheet member in which colors are changed with a set temperature as a boundary by a thermochromism effect to display two kinds of patterns and a specified part emits light. CONSTITUTION:In a jigsaw puzzle formed by plural pieces 2 which can be connected to each other, a part of a pattern of a picture, a photo and so on is applied to the surface of each piece 2, and at least a part of a pattern of a picture, a photo and so on of each piece 2 is formed by a reversible temperature-sensitive color change coloring matter and a luminous material. The colors are changed by the temperature of the periphery and a part formed by the luminous material is caused to emit light. The change of colors is such that when it is lower than the set temperature, a color change layer 22 forms a color, and when it is higher than the set temperature, it loses a color. That is, if the temperature of the periphery is lower than the set temperature, mixed colors of the colors of the pattern and the color change layer 22 appear, and if the temperature of the periphery is higher than the set temperature, the colors of the pattern appear so that two kinds of patterns are displayed, with the set temperature as a boundary.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a jigsaw puzzle and a sheet member in which a color changes at a set temperature, two kinds of patterns are displayed and a specific portion emits light, and particularly,
The pattern printed on the surface of a jigsaw puzzle, etc. is partially covered with a color-changing layer consisting of a reversible temperature-sensitive color-changing dye, and a phosphorescent material is formed on a part of the pattern to form a color-changing layer. The present invention relates to a jigsaw puzzle and a sheet member that can change a color by a thermochromism effect and can partially emit light.

[0002]

2. Description of the Related Art Conventionally, there has been a jigsaw puzzle in which a pattern such as a picture or a photograph is completed by connecting a plurality of pieces. In recent years, a great variety of jigsaw puzzles with an extremely high-class feeling have been supplied due to the rapid progress of photographic technology and printing technology.

As jigsaw puzzles, for example, there are jigsaw puzzles of a type that becomes a replica (copying image) when the connection of each piece is completed, and jigsaw puzzles of a type that becomes various landscape photographs when the connection is completed. Some puzzles have a surface that is beautifully shining.

Similarly, posters, postcards, and other sheet members are also provided with beautiful patterns by advanced printing techniques.

[0005]

However, the hobby industry such as jigsaw puzzles has a relatively short life cycle and is highly fashionable, so that it is always required to provide innovative products. Therefore, unlike conventional jigsaw puzzles, the emergence of novel and high value-added products has been strongly desired.

Until recently, a part of the jigsaw puzzle that was shining was particularly popular, but the feature cannot be fully exhibited unless the surrounding brightness changes, and further development of new products is expected. It had been.

[0007]

The present invention has been devised in view of the above problems, and in a jigsaw puzzle composed of a plurality of connectable pieces, the surface of each piece has a design such as a painting or a photograph. The paintings, photographs, etc. are completed when the connection of each of these pieces is completed, and at least a part of the design of the paintings, photographs, etc. provided on the surface of each piece. Is formed of a reversible temperature-sensitive color-changing dye and a light-storing material, and the color changes depending on the ambient temperature, and the portion formed by the light-storing material emits light.

Furthermore, the present invention is a jigsaw puzzle composed of a plurality of connectable pieces, wherein the surface of each piece is provided with a part of a design such as a painting or a photograph, and these pieces are connected together. At the time of completion, the paintings, photographs, etc. are completed, and at least a part of the design of the paintings, photographs, etc. provided on the surface of each piece is formed by a color-changing layer made of a reversible thermochromic dye. Along with being concealed, at least a part of the pattern is formed with a phosphorescent material,
The discoloration layer is configured to develop color when the temperature is lower than the set temperature and to erase color when the temperature is higher than the set temperature, and when the ambient temperature is lower than the set temperature, the color of the design of the painting, photograph, etc. When the ambient temperature is higher than the set temperature, the color of the design such as paintings, photographs, etc. appears, and two types of patterns are displayed with the set temperature as a boundary. In addition, it is characterized in that the portion formed of the above-mentioned phosphorescent material emits light.

Further, according to the present invention, a pattern such as a painting or photograph formed on the surface of each piece is formed by offset printing, and a color-changing layer made of a reversible temperature-sensitive color-changing dye and a light-storing material are used as a screen. It can also be formed by printing.

Further, a sheet member such as a poster or postcard having a design of characters, paintings, photographs and the like on the surface of the present invention is a painting or photograph applied to the surface of the sheet member such as this poster or postcard. At least a part of the pattern such as is formed by a reversible thermochromic dye and a light-storing material, and the color changes with the ambient temperature,
It is characterized in that the portion formed of the luminous material emits light.

A sheet member such as a poster or postcard having a design of characters, paintings, photographs or the like on the surface of the present invention is a painting or photograph applied to the surface of the sheet member such as the poster or postcard. At least a part of the pattern such as, is covered by a color-changing layer made of a reversible thermochromic dye, a light-storing material is formed in a part of the pattern, the color-changing layer, from the set temperature. It is designed to develop color when it is at a low temperature and to erase color when it is higher than the set temperature.When the ambient temperature is lower than the set temperature, it becomes a mixed color of the color of the design of the painting, photograph, etc. and the color change layer. When the ambient temperature is higher than the set temperature, the colors of the designs such as the paintings and photographs appear, and two kinds of patterns are displayed with the set temperature as a boundary, and the light storage material allows Been formed Min is characterized by the emission.

Further, the present invention provides that a design such as a painting or photograph formed on the surface of a sheet member is formed by offset printing, and a color-changing layer comprising a reversible thermochromic dye and a light-storing material are used as a screen. It can also be formed by printing.

The sheet member may be made of a polymeric material such as paper or synthetic resin, or a cloth member.

[0014]

The present invention configured as described above is a jigsaw puzzle composed of a plurality of connectable pieces, in which a part of a design such as a painting or photograph is applied to the surface of each piece, Paintings and photographs will be completed when the pieces are connected. Then, at least a part of the design such as paintings and photographs on the surface of each piece is formed from a reversible thermochromic dye and a light-storing material to change the color depending on the ambient temperature and to store the light-storing property. The portion formed of the material can emit light.

Further, according to the present invention, at least a part of a design such as a painting or photograph provided on the surface of each piece is covered with a color changing layer composed of a reversible thermochromic dye, and at least a part of the design is covered. A phosphorescent material is formed on the color change layer to develop color when the temperature is lower than the set temperature and to erase when the temperature is higher than the set temperature.When the ambient temperature is lower than the set temperature, paintings, photographs, etc. A mixed color of the color of the design and the color-changing layer appears, and when the ambient temperature is higher than the set temperature, the color of the design such as paintings and photographs appears, and two types of designs are displayed with the set temperature as a boundary. At the same time, it is possible to cause the portion formed of the light storing material to emit light.

Further, according to the present invention, a design such as a painting or photograph provided on the surface of each piece is formed by offset printing, and a color-changing layer made of a reversible thermosensitive color-changing dye and a luminous material are screen-printed. Can also be formed.

In the sheet member of the present invention such as a poster or postcard, at least a part of a design such as a painting or photograph formed on the surface is formed by a reversible thermochromic dye and a light-accumulating material. The color can be changed according to the ambient temperature, and the portion formed of the light storing material can be made to emit light.

Further, in the sheet member of the poster, postcard or the like of the present invention, at least a part of the design such as a painting or photograph provided on the surface is covered with a color-changing layer with a reversible thermochromic dye, and A light-storing material is formed on at least a part of the design, and this discoloration layer develops color when the temperature is lower than the set temperature, and erases when the temperature is higher than the set temperature.
When the ambient temperature is lower than the set temperature, a mixed color of the color of the design such as paintings and photographs and the color change layer appears, and when the ambient temperature is higher than the set temperature, the color of the design such as paintings and photographs. Appears, two types of patterns are displayed with the set temperature as a boundary, and the portion formed of the phosphorescent material can emit light.

Further, according to the present invention, a design such as a painting or photograph provided on the surface of the sheet member is formed by offset printing,
The color-changing layer made of a reversible temperature-sensitive color-changing dye and the light-storing material can also be formed by screen printing.

Further, the sheet member may be made of paper, a polymer material such as synthetic resin, or a cloth member.

[0021]

【Example】

An embodiment of the jigsaw puzzle 1 of the present invention will be described with reference to the drawings.

As shown in FIG. 1, the jigsaw puzzle 1 of this embodiment is composed of a plurality of pieces 2, 2.

The plurality of pieces 2, 2, ... Are arranged side by side so that they can be connected. On the surface of each piece 2, 2 ,. When the pieces 2, 2 ... Are connected, paintings, photographs, etc. are completed. In this embodiment, as shown in FIG. 2 (a), the design is a cartoon, but any design such as landscape photographs and constellations may be used.

As shown in FIG. 3, a printing layer on which a part of a design such as a painting or a photograph is printed on the surface of a part of the pieces 2 among the pieces 2, 2 ... In the present embodiment. 21 and a color changing layer 22 made of a reversible thermochromic dye.
The print layer 21 is a normal print and is given an appropriate color. The color-changing layer 22 is composed of a reversible temperature-sensitive color-changing dye and hides the printing layer 21.
On the upper surface of the printed layer 21, a light storing portion 24 made of a light storing material is formed. Note that FIG. 3 is illustrated as being laminated in a sandwich for ease of understanding, but the color-change layer 22 and the light storage portion 24 are formed at appropriate portions,
It suffices if it is formed so as to cover at least a part of the design such as paintings and photographs provided on the surface of each piece. Further, in FIG. 3, the printing layer 21 and the light storing section 24 are completely separated,
A mixture of a reversible temperature-sensitive color-changing dye and a light-accumulating material can be used in the portion where the printing layer 21 and the light-accumulating portion 24 are laminated.

The color-changing layer 22 is for realizing a thermochromism phenomenon in which the color changes depending on the temperature, and it develops color when the temperature is lower than the set temperature and erases it when the temperature is higher than the set temperature. That is, the color changing layer 22 of this embodiment
The color-forming dye encapsulated in the microcapsules is reversibly bound to a coexisting solvent to form a color with a change in temperature, or is cut and erased.

The thermochromic dye will now be described in detail.
As the thermosensitive color-changing dye, a thermochromic colorant containing an electron-donating color-developing organic compound (color former), a color developer, a desensitizer, etc. can be used. Coloring agents include triphenylmethanephthalides, fluoranes, phenothiazines,
Indolyl phthalides, leuco auramines, rhodamine lactams, etc. can be adopted.

As the color developer, a phenolic compound or the like can be used, but a benzothiazole derivative or
A benzothiazolyl derivative or the like can also be used.

As the desensitizer, alcohols, esters, ketones, ethers, fatty acids, acid amides, hydrocarbons and the like can be used.

These color-developing agents, color-developing agents and desensitizing agents can be mixed in an appropriate weight ratio, but usually, the weight ratio is about 1: 1.0 to 100: 0.5 to 500. And
It is preferably about 1: 0.5 to 50: 1 to 200. Further, a pigment, an extender pigment or the like can be added if necessary.

It should be noted that any material can be used as long as it is a thermosensitive color-changing dye, not limited to the above-mentioned blending of the thermosensitive color-changing dye.

Then, a specific color-developing agent and a specific color-developing agent may be selected, and further a desensitizing agent serving as a solvent for these may be selected.
In this example, 1 part of crystal violet lactone (hereinafter, “parts” means “parts by weight”), 4 parts of N-cyclohexyl-2-benzothiazolylsulfonamide and 30 parts of ethyl stearate were mixed and heated. It is used by melting.

Next, in this embodiment, a light storing portion 24 made of a light storing material is formed on at least a part of a design such as a painting or a photograph provided on the surface of each piece. This light storage unit 24
Has transparency and light-storing property (afterglow property), and when the surroundings are bright, the light-storing part 23 becomes transparent, and a pattern such as a painting or photograph provided on the surface of each piece appears. Then, when the surroundings become dark, the light storing section 24 emits light.

A mixture of a fluorescent pigment and a colorless ink is adopted as the luminous material of this embodiment. Note that not only fluorescent pigments but also fluorescent dyes can be used. In this embodiment, 40% by weight of the fluorescent pigment and 60% by weight of the colorless ink are mixed, but an appropriate mixing ratio can be adopted.
Preferably, the fluorescent pigment is 20 to 80% by weight, and the colorless ink 8 is used.
It is about 0 to 20%. In this example, "Keiko-Color Y-50 manufactured by Nippon Fluorescent Chemical Co., Ltd." was used as the fluorescent pigment, and "2000A" was used as the colorless ink.
Ink Co., Ltd. “Mino Group” is used, but any product can be used.

Therefore, the temperature around the jigsaw puzzle 1 is
When the temperature is lower than the set temperature, a mixed color of the color of the print layer 21 for representing a design such as a painting or a photograph and the color developed by the color changing layer 22 appears. Further, when the ambient temperature is higher than the set temperature, the color of the discoloration layer 22 is erased, so that the color of the print layer 21 for representing a design such as a painting or a photograph appears. When the surroundings become darker, the light storing section 24 emits light.

The set temperature can be appropriately determined depending on the kind of the reversible thermochromic dye, and in this embodiment, it is -4 ° C.
The temperature can be freely set within the range of 60 ° C to 60 ° C.

In this embodiment, each piece 2, 2 shown in FIG.
The color change layer 22 is formed in a specific building portion 23 among the cartoon patterns at the time of completion of the connection of ... And the color change layer 22 is not present in other portions, and the print layer 21 is exposed. A light storing portion 24 is formed on the specific boat portion 25 and the window frame portion 25 of the building.

Therefore, when the temperature around the jigsaw puzzle 1 is lower than the set temperature, as shown in FIG. 2 (b), the discoloration layer 22 formed on the specific building portion 23 in the cartoon pattern. The mixed color of the color of the building portion formed on the printing layer 21 and the color of the color changing layer 22 becomes the color of the building portion 23. When the surrounding area becomes darker, the specific boat portion 25 and the window frame portion 25 of the building emit light. In particular, the window frame portion 25 of the building can change the brightness due to the light emission together with the change in the color due to the temperature change. When the surroundings are bright, the light storage unit 24 becomes transparent, and a mixed color with the color of the cartoon pattern or the color changing layer 22 appears.

Further, when the temperature around the jigsaw puzzle 1 becomes higher than the set temperature, as shown in FIG. 2 (a), the discoloration layer 22 formed in a specific building portion 23 in the cartoon pattern.
Disappears and the color of the building part formed on the printed layer 21 becomes
It will be the color of the building as it is.

As a result, the specific building portion 2 of the cartoon pattern formed on the jigsaw puzzle 1 is bounded by the set temperature.
The color of No. 3 changes, and it is possible to display two types of patterns having different colors. And when the surroundings become dark, the phosphorescent portion 2
4 can be made to emit light.

In this embodiment, in the cartoon pattern formed on the jigsaw puzzle 1, the color-changing layer 22 is formed on a specific building portion 23 and the color of only the building portion 23 is changed, but the other portions are changed. You can also change the color of the whole, and further change the overall color (all pieces 2, 2, ...
It is also possible to form the discoloration layer 22). Similarly, the light accumulating portion 24 may be provided on the entire surface to emit light when the surroundings are dark.

Further, in the present embodiment, only the color is changed without changing the form of the specific building portion 23, but it is also possible to change the entire pattern by changing the color.

In this embodiment, the color changing layer 22 is basically used.
Since the color development and the color erasing are used, it is possible to switch between the mixed color of the print layer 21 and the color change layer 22 and the color of the print layer 21. However, there is a delay time in the change of the color change layer 22, The mixed color may change under the assumption of the change. Therefore, in the present specification, "two types of patterns are displayed" means
This means that finally two types of patterns are displayed, and when the color change layer 22 changes, the patterns change continuously.

As described above, in this embodiment, the color is changed by the two layers of the printing layer 21 and the color changing layer 22, but if thermochromism can be realized by utilizing the reversible thermochromic dye. Any means can be adopted. Further, as the reversible thermochromic dye, any material can be used as long as it is a material that changes with temperature, and for example, a temperature-sensitive pigment or the like can be used.

Next, a modification of the present invention will be described with reference to FIGS. 4 and 5. FIG. 4 is a view showing the postcard 3, on which a picture of an airplane is formed. Postcard 3
Corresponds to a sheet member, and a pattern such as an airplane is formed by the printing layer 21 as in the above-described embodiment.
In this embodiment, the discoloration layer 22 is formed on a part 31 of the airplane, and the discoloration layer 22 is not formed on the other parts.
Is exposed. Further, the specific character portion 32 painted on the airplane is depicted as "DC-9" by the light storage unit 24. And also in the part 32 of the specific wing, the light storage part 2
4 are formed.

Therefore, the temperature around the post card 3 is
When the temperature is lower than the set temperature, as shown in FIG. 4B, the discoloration layer 22 formed on the part 31 of the airplane develops color, and the color of the airplane formed on the printing layer 21 and the discoloration layer 22. The mixed color with the developed color becomes the color of the part 31 of the airplane. When the surroundings become dark, the specific character portion 32 “DC-9” shines, and further, the specific wing portion 32 also emits light, creating an atmosphere like a night flight.
If the surrounding area becomes bright, the specific character portion 32 and the specific wing portion 32 do not emit light, and the color becomes the same as that of the other aircraft.

Further, when the temperature around the postcard 3 becomes higher than the set temperature, as shown in FIG. 4A, the discoloration layer 22 formed on the part 31 of the airplane disappears and the printing layer 21.
The color of the airplane formed on the part is the same as part 3 of the airplane.
The color is 1.

As a result, the color of the part 31 of the airplane formed on the postcard 3 changes at the boundary of the set temperature, and two types of patterns having different colors can be displayed.
When the surroundings are dark, a specific character portion 32, “DC
-9 "can be made to shine, and further a part 32 of a specific wing can be made to illuminate.

In this modification, any design can be adopted without being limited to the design of an airplane, and the color of any part or the whole can be changed.

As described above, this modified example is a jigsaw puzzle 1
The color changing technique of is applied to the postcard 3, and the other description is the same as the description of the embodiment of the jigsaw puzzle 1 described above, and therefore the description is omitted.

If it is a sheet member, the postcard 3
Not limited to, it can be applied to posters and the like.

Further, although the sheet member is generally made of paper, it may be made of a polymer material such as synthetic resin or a cloth member.

Further, a design such as a painting or photograph formed on the surface can be printed by offset printing, and the discoloration layer 22 and the light storing section 24 can be formed by screen printing. The color-change layer 22 and the light-storing unit 24 can be printed in separate steps, but can also be printed by mixing the temperature-sensitive color-changing dye and the light-storing material.

In the present embodiment and the modified examples configured as described above, not only the color is changed by the ambient temperature, but also an appropriate portion can be made to emit light depending on the ambient brightness. There is an effect that characters, figures, patterns, etc. that are completely different from the designs such as paintings and photographs formed on the surface of can be made to stand out at night. If the surroundings do not become dark, you can not see hidden letters and pictures, you can increase the expectation, and if you store it in a frame etc. and decorate it indoors, you can see it as a mysterious painting, photograph etc. There is an outstanding effect that you can do it.

[0055]

[Effect] According to the present invention configured as described above, in a jigsaw puzzle including a plurality of connectable pieces, a part of a design such as a painting or a photograph is applied to the surface of each piece. At the completion of connection of these pieces, the paintings, photographs, etc. are completed, and at least a part of the design of the paintings, photographs, etc. applied to the surface of each piece is reversible thermochromic property. It is formed of a pigment and a light-accumulating material, and is configured so that the color changes depending on the ambient temperature. Therefore, the color changes based on the temperature change,
There is an effect that it is possible to provide a jigsaw puzzle in which a portion formed of the luminous material emits light.

Further, according to the present invention, at least a part of the design such as a painting or photograph provided on the surface of each piece is hidden by a color-changing layer comprising a reversible temperature-sensitive color-changing dye, and at least the above-mentioned pattern. A part of the phosphorescent material is formed, and this discoloration layer is configured to develop color when the temperature is lower than the set temperature and to erase it when the temperature is higher than the set temperature, and when the ambient temperature is lower than the set temperature. Is a mixed color of the color of the design of the painting, photograph, etc. and the color change layer, and when the ambient temperature is higher than the set temperature, the color of the design of the painting, photograph etc. appears. Since two kinds of patterns are displayed with the set temperature as a boundary and the part formed of the luminous material emits light,
When the temperature is changed, it is possible to change the pattern of the jigsaw puzzle into two types, and when the surroundings are dark, there is an effect that the portion formed by the luminous material can be made to emit light. Further, the present invention is fundamentally different from the conventional jigsaw puzzle, and has an outstanding effect that it is possible to provide a jigsaw puzzle that is novel, has added value, and is full of interest. In particular, when the surrounding area becomes dark, there is an effect that a character that cannot be seen when it is bright can be brought up or a pattern different from that when it is bright can be changed.

Further, in the present invention, at least a part of a design such as a painting or photograph provided on the surface of a sheet member such as a poster or a postcard is composed of a reversible thermochromic dye and a luminous material. Therefore, there is an effect that it is possible to provide a poster, a postcard, or the like in which the color changes depending on the ambient temperature and the specific location emits light depending on the ambient brightness.

At least a part of the design such as a painting or photograph provided on the surface of a sheet member such as a poster is hidden by a color-changing layer made of a reversible temperature-sensitive color-changing dye, and at least a part of the design. Since the phosphorescent material is formed on the display, two types of patterns are displayed with the set temperature as the boundary, and it is possible to emit a specific pattern or letters depending on the brightness of the surroundings. The effect is that posters, postcards, etc. can be provided.

[0059]

[Brief description of drawings]

FIG. 1 is a diagram showing a piece 2 of a jigsaw puzzle 1 according to an embodiment of the present invention.

FIG. 2 is a diagram illustrating a jigsaw puzzle 1 of this embodiment.

FIG. 3 is a diagram illustrating a configuration of a jigsaw puzzle 1 of this embodiment.

FIG. 4 is a diagram illustrating a configuration of a post card 3 of the present modified example.

[Explanation of symbols]

 1 Jigsaw puzzle 2 pieces 21 Printing layer 22 Color changing layer 23 Specific building part 23 24 Luminous part 25 Specific boat part, window frame of building 3 Postcard 31 Airplane part 32 Specific character part, part of wing

[Procedure amendment]

[Submission date] February 22, 1994

[Procedure Amendment 1]

[Document name to be amended] Statement

[Name of item to be corrected] Brief description of the drawing

[Correction method] Change

[Correction content]

[Brief description of drawings]

FIG. 1 is a diagram showing a piece 2 of a jigsaw puzzle 1 according to an embodiment of the present invention.

FIG. 2A is a diagram illustrating a jigsaw puzzle 1 of this embodiment.

FIG. 2B is a diagram illustrating a jigsaw puzzle 1 of this embodiment.

FIG. 3 is a diagram illustrating a configuration of a jigsaw puzzle 1 of this embodiment.

FIG. 4A is a diagram illustrating a configuration of a post card 3 of the present modification.

FIG. 4B is a diagram illustrating the configuration of a post card 3 of this modification.

[Explanation of symbols] 1 jigsaw puzzle 2 pieces 21 printing layer 22 discoloration layer 23 specific building part 24 phosphorescent part 3 postcard 31 airplane part 32 specific character part, part of wing

[Procedure Amendment 2]

[Document name to be corrected] Drawing

[Name of item to be corrected] Figure 2

[Correction method] Change

[Correction content]

[Figure 2 (a)]

[Fig. 2 (b)]

[Procedure 3]

[Document name to be corrected] Drawing

[Name of item to be corrected] Fig. 4

[Correction method] Change

[Correction content]

[Figure 4 (a)]

[Fig. 4 (b)]

Claims (7)

[Claims] 1. A jigsaw puzzle composed of a plurality of connectable pieces, wherein the surface of each piece is a painting,
A part of the design such as a photograph is provided, and when the connection of each of these pieces is completed, the painting, the photograph, etc. are completed, and the design of the painting, photograph, etc. provided on the surface of each piece. At least a part of which is formed of a reversible thermochromic dye and a light-storing material, the color changes depending on the ambient temperature, and the part formed of the light-storing material emits light. A jigsaw puzzle. 2. A jigsaw puzzle composed of a plurality of connectable pieces, wherein the surface of each piece is a painting,
A part of the design such as a photograph is provided, and when the connection of each of these pieces is completed, the painting, the photograph, etc. are completed, and the design of the painting, photograph, etc. provided on the surface of each piece. At least part of is covered with a color-changing layer made of a reversible temperature-sensitive color-changing dye, and a light-storing material is formed on at least part of the pattern, and the color-changing layer is
When the temperature is lower than the set temperature, the color is developed, and when the temperature is higher than the set temperature, the color is erased.When the ambient temperature is lower than the set temperature, the color of the design such as the painting or photograph and the color change layer are When the color is mixed and the ambient temperature is higher than the set temperature, the color of the design such as the painting or photograph appears, and two kinds of patterns are displayed with the set temperature as a boundary, and the luminous A jigsaw puzzle, characterized in that the part formed of a conductive material emits light. 3. A pattern such as a painting or photograph provided on the surface of each piece is formed by offset printing, and a color-changing layer made of a reversible temperature-sensitive color-changing dye and a luminous material are formed by screen printing. The jigsaw puzzle according to claim 2, which is provided. 4. A sheet member, such as a poster or postcard, on the surface of which a design such as letters, paintings, photographs, etc. is drawn. At least a part of the design is formed by a reversible thermochromic dye and a light-storing material, and the color changes depending on the ambient temperature, and the portion formed by the light-storing material emits light. Characteristic sheet member. 5. A sheet member such as a poster, postcard, etc. on which a design such as letters, paintings, photographs, etc. is drawn on the surface, such as a painting, photograph etc. applied to the surface of this poster, postcard, etc. sheet member. At least a part of the pattern is hidden by a color-changing layer made of a reversible thermochromic dye, and a phosphorescent material is formed on a part of the pattern, and the color-changing layer is at a temperature lower than a set temperature. It develops color and is erased when the temperature is higher than the set temperature.When the ambient temperature is lower than the set temperature, it becomes a mixed color of the color of the design of the painting, photograph, etc. and the color change layer, and When the temperature is higher than the set temperature, the color of the design such as the painting, photograph, etc. appears, and two kinds of patterns are displayed with the set temperature as a boundary, and the color is formed by the phosphorescent material. The part A sheet member that is characterized by being illuminated. 6. A design such as a painting or photograph provided on the surface of a sheet member is formed by offset printing, and a color-changing layer made of a reversible temperature-sensitive color-changing dye and a luminous material are formed by screen printing. The sheet member according to claim 5, wherein 7. The sheet member according to claim 4, wherein the sheet member is made of a polymeric material such as paper or synthetic resin, or a cloth member.