JPH05198U - Doll toy accessories - Google Patents

Abstract

(57) [Summary] [Purpose] To provide a safe thermochromic accessory that is a doll toy accessory that discolors when heated by electricity, without the risk of overheating or electric leakage. A thermochromic layer 3 and an electric heating element 2 arranged on the back of the thermochromic layer 3 are provided, and the electric heating element 2 generates heat when a low voltage is applied. The energization heating element comprises a thermistor which has a positive temperature coefficient of electric resistance and has a specific volume resistivity, and a self-temperature controlled exothermic saturation temperature of 25 to 65 ° C. At the end of the conductive member 7 connected to 2, the connection terminal 11 of the power source 12 built in the main body of the doll toy is connected.
A thermochromic accessory 1 having a structure in which a connection terminal 8 engaging with the accessory is attached.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

  The present invention is used as an accessory for doll toys (including figurative toys that imitate the shape of animals, etc.) Concerned. More specifically, the heating element is quickly heated to a predetermined temperature by applying a low voltage. Then, the thermochromic layer is discolored to make it visible and the exothermic temperature is self-controlled to cause overheating. The present invention relates to a thermochromic accessory that is easy to put on and is not dangerous.

[0002]

[Prior art]

  Conventionally, a heat generating element that can be supplied with electricity is placed on the back of the thermochromic layer, and the above-mentioned thermochromic change occurs when electricity is applied. Several proposals have been disclosed regarding color-changing toys that discolor the layers (Shokaisho) 62-137093, JP-A-62-201178, etc.).   The heating element in the above is a conductive heat-generating gold such as tungsten, nickel, or titanium. It consists of wiring made of metal, and the wiring part is covered with insulating ceramics. It is characterized by having a rotor structure.

[0003]

[Problems to be solved by the device]

  The heating element in the conventional color-changing toy has a value within the applicable temperature range. There is no self-temperature control function that works effectively, and there is a danger of overheating as it is, In addition to requiring a temperature control switch, etc., ceramics to avoid the risk of leakage. Insulation such as coating with a cloth was required.   The present invention has a risk of overheating or electric leakage which is likely to occur in the conventional color-changing toy. There is no heat, and the heating element is quickly heated to the desired heating temperature by applying a low voltage, By changing the color of the color layer, you can effectively visualize the delicacy and decorativeness caused by heat discoloration. The doll toys (animals) that are easy to attach to the body and can be enjoyed easily even by young children To provide thermochromic accessories (including figurative toys imitating other shapes) It is a thing.

[0004]

[Means for solving problems]   The present invention will be described with reference to the drawings.   The present invention comprises a thermochromic layer 3 and an electric heating element 2 arranged on the back of the thermochromic layer 3. Then, the body 10 of the doll toy body is connected to the built-in power source 12 and the energizing heating element 2. It is a doll toy accessory 1 that is electrically connected to change the color of the thermochromic layer 3. Then, the energization heating element 2 is (a) at least in the range of 25 ° C to 65 ° C, The temperature coefficient of electrical resistance shows a positive value, and (b) volume resistivity at 25 ° C (ρ25                 -3 5 ) Is 9.8 × 10 Ω · cm to 2.97 × 10 Ω · cm, (C) 25 ° C. and 65 The volume resistivity ratio at ℃ (ρ65 / ρ25) is Within the range of 5 ≦ (ρ65 / ρ25) ≦ 200, 0.8V to 4 are satisfied. It generates heat when a voltage of 0 V is applied and the heat generation saturation temperature is within the temperature range of 25 ° C to 65 ° C. It consists of a thermistor whose temperature is controlled to the desired temperature. The end portion of the conductive member 7 connected to the body is connected to the connection terminal 11 of the power supply unit 12 so as to be engaged therewith. It is a requirement that the connecting terminal 8 is attached. Furthermore, the connection terminal 8 is A hook that is electrically conductive and is electrically connected to the power supply unit 12 of the doll toy body. Doll toy accessory that is configured to be detachable from the hook member (connection terminal 11). 1 is a requirement.

[0005]   Further, a cover member made of a transparent material is closely arranged on the thermochromic layer 3. It is characterized by the structure of the cessary.                                                 twenty two   In the above, the energization heating element 2 is approximately 0.05 cm to 20 cm (one surface Product) and a thickness of 0.05 cm to 1 cm (preferably 0.5 cm or less) Have practicality for toys. Less discoloration effect in smaller area system It is not suitable as a toy element, while it can be applied to low voltage in a large area and large capacity system. Therefore, it is not preferable in terms of exothermicity in a short time, exothermicity, exothermic efficiency, soaking property, and the like.

[0006]   The heating element 2 is, specifically, a BaTiO 3 -based sintered body [semiconductor doped with a rare earth element.                                   Three Which has been embodied and further substituted with an element such as Sr as desired), Si single crystal system, organic Plastic type (conductive fine powder such as graphite in low melting crystalline plastic) Blended powder) and the like, in a low temperature range (25 to 65 ° C) The BaTiO 3 -based sintered body is suitable from the standpoints of adjusting the exothermic saturation temperature and temperature rising characteristics.                                                       3 Applied.

[0007]   The heating element 2 has a disc shape, a belt shape, a honeycomb shape, or any other suitable shape according to the purpose. Is adopted.   Next, the characteristics of the electric heating element 2 applied to the present invention are shown in the graphs shown in FIGS. Explain.   The energization heating element 2 has a temperature of electric resistance within a range of at least 25 ° C to 65 ° C. The degree coefficient shows a positive value and the resistance value increases steeply with increasing temperature. And are indispensable requirements (Fig. 5), the amount of heat generation decreases as the resistance value increases, and Allows control.

[0008]                                                                   ー 3 Furthermore, the heating element 2 has a volume resistivity (ρ25) at 25 ° C. of 9.8 × 10 Ω.                       Five -Cm to 2.97 x 10 Ω-cm, more specifically, the volume resistivity at each temperature ( ρ) is within the allowable range shown in FIG. 6 (within the range of the line showing the upper limit value and the lower limit value), and 25 The ratio (ρ65 / ρ25) of volume resistivity at ℃ and 65 ℃ is It is required to be within the range of 5 ≦ (ρ65 / ρ25) ≦ 200.   By meeting the above requirements, the low temperature range required for toy elements (65 ° C It is possible to supply the heating element 2 that satisfies the heat generation at 50 ° C. or lower) and the self-temperature controllability. It Volume of the heating element 2 outside the limit value at each temperature, for example, the volume exceeding the upper limit line In a resistivity system, it is difficult to raise the temperature to the desired temperature in a short time unless the voltage is increased. In a system with a volume resistivity lower than the lower limit line, the voltage is made extremely small and a large current flows. Otherwise, the desired exothermic temperature cannot be obtained and it is not practical as a toy element.

[0009]   FIG. 7 is a graph showing the relationship between the stable temperature of the heating element due to changes in room temperature. Is the amount of heat generated by the heating element per unit time and the amount of heat released (per unit time) It is stable at the same temperature, and the heating element 2 applied to the present invention is more stable than the metallic heating element system. Stable thermal characteristics with little influence of ambient temperature.

[0010]   FIG. 8 is a graph showing the relationship between the heat generation time by energization and the heat generation temperature of the heating element.   In addition, the experimental data is BaTiO 3 -based sintered body [15.0 mmφ × thickness 1 mm,                               3 2.5Ω (25 ° C)] is used as the heating element 2, and wiring using titanium wire (0.1 mm thick port) System formed on the polyester film) as a metal heating element. , Each 30mm square × 0.3mm thick brass plate, and apply a voltage of about 1V It was obtained.

[0011]   It is effective in terms of the assembling structure that the electrodes 6 are provided on the energization heating element 2. Specifically, aluminum spraying, nickel or the like is applied to the facing surface of the electric heating element 2 itself. Conductive heat transfer member 4 or the like that is formed by plating with Can be provided.   A conductive member 7 is connected to the electrode 6 so that the power source 12 can be energized.   Examples of the conductive member 7 include a conductive wire material such as a lead wire and a chain-shaped member. As the power source 12, various batteries and AC power sources (voltage is adjusted by a transformer) are applied, Any system may be used as long as it can be applied with a voltage in the range of 0.8 to 40V.   The arrangement of the conductive heat transfer member 4 facilitates the setting of the electrodes and makes the heating element 2 uniform. To give a heat effect, an effect of expanding and transmitting the heat generation temperature of the heating element 2 to a wide area. You can   The thermochromic layer 3 is disposed close to the surface of the electric heating element 2 itself or the electric heating element 2. Formed on the surface of the heat transfer member 4 or on the surface of the sheet member 41 arranged in contact with the heat transfer member 4. .

[0012]   Next, the thermochromic layer 3 will be described.   The thermochromic layer 3 is a conventionally known reversible thermochromic material, for example, a cholesteric liquid. Crystal, an electron-donating color-developing organic compound, a developer of the compound, and a color reversal of the both. Thermochromic material containing three components of a compound serving as an organic compound medium that reversibly induces a reaction Reversible heat in the form of a material or microcapsules containing the above-mentioned components or fine particles of a resin solid solution A thermochromic material exhibiting discolorability, which was previously proposed by the applicant as a suitable example, JP-B-51-35414, JP-B-51-44706, and JP-B-52- 7764, Japanese Patent Publication No. 51-35216, Japanese Patent Publication No. 1-29398. , A thermochromic material disclosed in JP-A-60-264285. .   The three-component thermochromic material reversibly causes discoloration at a predetermined temperature. However, in the color change, whether it changes from low temperature side to high temperature side or high temperature side. From the low temperature to the low temperature, the hysteresis characteristics unique to each of the three components are Shows sex and discolors.

[0013]   The thermochromic material that can be used in the present invention is in the normal temperature range to approximately 60 ° C (preferably, Any material having a color change point in the temperature range of 30 to 50 ° C. may be used.   By utilizing the above-mentioned hysteresis characteristics as desired, the heating of the energization heating element 2 The thermochromic layer 3 that is discolored by heat is more versatile in discoloring or recoloring during cooling. Can be changed. That is, when the hysteresis width is extremely wide (7 to (50 ° C), it is possible to have more variety of changes at room temperature after the power is turned off. Wear. On the contrary, when the hysteresis width is narrow (3 ° C or less), it is more sensitive after the power is turned off. Any color change or color restitution response can be exhibited. In addition, these intermediate hysteresis characteristics In the case of heat resistance, an appropriate time delay may occur as the temperature of the energized heating element decreases after the energization is stopped. Therefore, the color can be changed or restored. The above hysteresis characteristics are selected according to product It can be appropriately selected as desired in consideration of the concept, how to play as a toy, and the like. The thermochromic material is dispersed in an appropriate vehicle to form a color of ink, paint, paint, etc. Form a thermochromic layer at the desired location as a material or melt-blend it into a thermoplastic resin The material can form a sheet-like thermochromic layer.   The power source 12 is a dry battery or various batteries and is built in the toy body.   The thermochromic layer 3 is not limited to a single layer, but can be formed in multiple layers and can be overprinted with a non-thermochromic image. Also, the effect of discoloration can be enhanced by using it together with a decorative material. Cover member 9 (molded body made of transparent resin, glass, etc.) Property can be imparted.   Further, in the system in which the cover member 9 is applied, the thermochromic layer 3 is applied to the back surface of the cover member. Place the cloth or spray-formed, or the sheet material on which the thermochromic layer is formed in close contact, and It is possible to effectively exhibit a discoloring effect with a sensation.   Accessories include pendants, earrings, crowns, bangles, rings, and hair ornaments. , Glasses, etc. can be mentioned.   The connection terminal 8 of the accessory 1 and the connection terminal 11 of the toy body are configured to be detachable. In addition, it is possible to contribute to the ease of mounting by making it possible to engage and immediately energize. Wear. In this respect, the engaging and disengaging means by combining metal hook members is Also, it is convenient in handling and satisfies practicality.

[0014]   Action   By applying a voltage, the energization heating element 2 connected through the conductive member 7 is caused to generate heat, The surface of the heating element 2 itself or the surface of the heat transfer member 4 closely arranged to the electric heating element 2 or The thermochromic layer 3 disposed on the surface of the sheet material 41 disposed in contact with the thermal member 4 is discolored. Voltage The energization heating element 2 self-heats due to the application of the heat and the temperature rises, and the resistance value rapidly increases accordingly. In addition, the rate of temperature rise will be low, and the self-heating will be stable at a temperature at which the amount of heat generation and the amount of heat release match Is controlled (see FIG. 12).   Looking at the relationship between the elapsed time after energization and the heat generation temperature, the metal-based heating element Due to the extremely small rate of change, the amount of heat generated per unit time due to temperature rise is While the temperature becomes almost constant and the temperature rises slowly, the electric heating element 2 of the present invention is Immediately after energization, a large current flows, the rate of temperature rise is large, and the temperature rises quickly to the specified temperature. (See Figure 13).

[0015]   The electric heating element 2 is stable at about 33 ° C when the ambient temperature is 20 ° C, against changes in room temperature. However, when the ambient temperature is 28 ° C., it is stable at about 38 ° C., and the difference is about 5 ° C. On the other hand, in the case of a metal heating element system, the change in the amount of heat generated per unit time with temperature is small. Depending on this, the stable temperature when the ambient temperature is 20 ° C is about 32 ° C, When the degree is 28 ° C., the stable temperature is 39 ° C., and the difference is 7 ° C. (see FIG. 12).   Therefore, the electric heating element 2 according to the present invention has a higher ambient temperature than the metal heating element system. Temperature change is small.

[0016]   The electric heating element 2 has a low electric power consumption by satisfying the respective requirements of (a), (b) and (c). When the pressure (0.8 to 40 V) is applied, the above-mentioned behavior is exhibited, and the low temperature range (65 ° C. or higher) is exhibited. In (below), it fulfills a self-temperature control function and develops desired thermal characteristics.   Since the thermochromic layer 3 is disposed close to or close to the electric heating element 2, The color changes in response to the heat generated by the heating element 2.   It causes various changes depending on the hysteresis characteristic of the thermochromic material.   The hysteresis width (ΔH) is very small due to the thermochromic material (see Fig. 14). In the colored system, it is sensitive to the set temperature, and changes to another aspect before and after the color change point. Change and visualize the changed appearance.   When the temperature of the heating element 2 is maintained in the temperature range above the color change point, the discolored appearance is maintained. It is held and visually recognized, but when the temperature of the heating element falls below the color change point, the color changes as described above. The appearance is not maintained and the appearance returns to the appearance at room temperature.

Further, in the system in which the hysteresis width (ΔH) is colored by a thermochromic material having a large value (see FIG. 15), the appearance of discoloration at a heating temperature of T _B or higher is that the heating element 2 is below the heating temperature. Even if the temperature rises, the above aspect is retained and is visible at room temperature (In addition, when the thermochromic layer is cooled to a temperature below T _A , it reappears in the state before discoloration and maintains that aspect at room temperature. Further, in the above-mentioned system having an intermediate hysteresis characteristic, it is possible to discolor or restore the color with an appropriate time delay after the energization is stopped and the temperature of the energization heating element is lowered. In the system in which the accessory is attached via the hook member, the attachment and the energization can be simultaneously performed.

[0018]     Example 1 (see FIGS. 1 to 4)   The thermochromic pendant 1 was constructed as follows. A mounting hole with a diameter of about 2 cm The heat generating element [0.5 mm thick, aluminum plate 4 with a diameter of about 2 cm] On the back surface of the BaTiO 3 series sintered body with 15mmΦ and 1mm thickness (conductive plating on both sides                                             3 A layer is formed, which exhibits a resistance value of 2.5Ω at 25 ° C and a heat generation saturation temperature of about 45. (Set to ℃) is joined and integrated with a conductive adhesive) First, the lead wire 7 was connected, and the connection terminal 8 (metal hook member) was attached to the end portion.   On the back surface of the cover member 9 made of a polystyrene resin molded body, it becomes colorless at 36 ° C or higher. Of a coloring material containing a thermochromic material having a ΔH of 3 ° C, which exhibits a red color at less than 36 ° C The thermochromic layer 3 is formed by applying and the fluorescent paint is sprayed on the thermochromic layer 3. Then, the decorative cover member 9 is formed.   The cover member 9 is heat-discolored by being adhered to the heat-generating element with a transparent adhesive. A sex pendant 1 is constructed.   The power supply (1.5) in which the connection terminal 8 of the pendant 1 is built in the main body of the doll toy. Energized by engaging with the connection terminal 11 (metal hook member) of 2 V dry batteries) When the power is turned on when the switch 14 is turned on, it turns red soon. It disappeared and the fluorescent colored layer was exposed. By turning off the switch 14, Without the fluorescent colored layer is hidden by the red thermochromic layer, the original appearance of the pendant I returned to G.

[0019]     Example 2   The cover member 9 of Example 1 (however, the fluorescent paint layer is not provided) is the same as that of Example 1. The same doll toy as in Example 1 by setting the same heat generating element to form a thermochromic pendant. When it was attached to the tool and turned on, the red thermochromic layer 3 soon disappeared and the aluminum The metallic luster color of the plate 4 was revealed.

Example 3 In place of the thermochromic material of Example 1, a color containing a thermochromic material having a color memory property (red ← → colorless: exhibiting color changing characteristics of T _A 18 ° C. and T _B 32 ° C.) The thermochromic pendant 1 was constructed in the same manner as in Example 1 except that the material was applied, and when it was attached to the same doll toy and energized, the red color disappeared soon and the fluorescent coloring layer was revealed. It was Even after the switch was turned off or the pendant was unmounted, the aspect was stored and stored at room temperature (18 ° C. to 32 ° C.), and the pendant could be changed to a fluorescent coloring pendant. When the fluorescent-colorable pendant was cooled to 18 ° C. or lower, it returned to the original red pendant, and the appearance was maintained at room temperature of 32 ° C. or lower. The change in appearance was reproducible.

[0021]     Example 4   A floral pattern is printed and formed on the sheet material 41 (printing paper) with a non-thermochromic ink. After that, the thermochromic layer 3 was overprinted with a coloring material containing the same thermochromic material as in Example 1. It was   After the sheet material 41 is closely arranged on the heat generating element of the first embodiment, The thermochromic pendant 1 is configured by attaching the cover member 9 made of When attached to a shaped toy and energized, the red thermochromic layer 3 disappears and a floral pattern appears. Let Soon after the power was turned off, the original red color was given and the floral pattern was hidden.

[0022]

[Effect of device]

  The accessory of the doll toy of the present invention is an electric heating element attached to the back of the thermochromic layer. By applying a voltage to, heat is generated quickly, and the temperature is raised to a predetermined temperature, causing thermal discoloration. The layer can be discolored, and the heat generation temperature does not exceed 65 ° C. There is no danger due to overheating as it is self-controlled to the sum temperature.   In addition, since it is a heating system that energizes by applying a low voltage, there is no danger of leakage, There is no need to coat the heater to prevent it. As a power supply, various commercially available batteries It can be applied and can be easily replaced by attaching batteries etc. to the toy freely. You can In addition, it is easy to attach accessories, and you can change the color even for infants etc. Can be used for play.

[Brief description of drawings]

FIG. 1 is a perspective view of an embodiment of the accessory of the present invention.

FIG. 2 is an explanatory view of an electric heating mechanism of the accessory of FIG.

FIG. 3 is an external view of a doll toy equipped with the accessory of the present invention.

FIG. 4 is an explanatory diagram of a power supply unit of the doll toy body to which the accessory of FIG. 1 is attached.

FIG. 5 is a graph comparing the temperature and resistance values of a heating element and a metal heating element applied to the present invention.

FIG. 6 is a graph showing an allowable range of volume resistivity at each temperature of a heating element applied to the present invention.

FIG. 7 is a graph showing stable temperatures of heating elements and metal heating elements applied to the present invention due to room temperature changes.

FIG. 8 is a graph showing a relationship between an energization time of a heating element and a metal heating element applied to the present invention and a heating temperature of the heating element.

FIG. 9 is a graph showing color density characteristics of a thermochromic material having an extremely narrow hysteresis width due to temperature changes.

FIG. 10 is a graph showing color density characteristics of a thermochromic material having a large hysteresis width due to temperature changes.

[Explanation of symbols]

1 Doll toy accessories 2 Electric heating element 3 Thermochromic layer 4 Heat transfer member 41 sheet member 5 base 6 electrodes 7 Conductive member 8 connection terminals 9 Cover member 10 toy body 11 connection terminals 12 power supplies 13 lead wire 14 switch

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁵ Identification code Internal reference number FI technical display location // A44C 25/00 Z 2119-3B (72) Inventor Kyouji Aoyama Midoricho, Showa-ku, Nagoya-shi, Aichi 3-17 Pilot Ink Co., Ltd. (72) Inventor Toshiaki Tanaka 3-17 Midoricho, Showa-ku, Nagoya, Aichi Pref.

Claims (3)

[Scope of utility model registration request] 1. A thermochromic layer and an electric heating element arranged on the back of the thermochromic layer. The power source section built in the body of the doll toy body and the electric heating element are connected to each other to make them electrically conductive. A doll toy accessory that discolors a thermochromic layer, wherein the energizing heating element is (a) at least 25 ° C to 65 ° C.
Within the range of 0 ° C, the temperature coefficient of electric resistance shows a positive value, and (b) the volume resistivity (ρ25) at 25 ° C is 9.
8x The volume resistivity ratio (ρ65 / ρ25) is calculated by the following equation 5 ≦ (ρ
65 / ρ25) ≦ 200, satisfying each requirement of
It is composed of a thermistor which generates heat when a voltage of 0.8 V to 40 V is applied and whose heat generation saturation temperature is controlled to an arbitrary temperature within a temperature range of 25 ° C. to 65 ° C. A doll toy accessory in which a connection terminal that engages with a connection terminal of the power supply unit is attached to an end of the member. 2. The connection terminal is a conductive hook member, and is configured to be detachable from the other half hook member that is electrically connected to the power source section of the doll toy body.
The doll toy accessories listed. 3. The doll toy accessory according to claim 1, wherein a cover member made of a transparent material is closely arranged on the thermochromic layer.