JPH0450100U

JPH0450100U -

Info

Publication number: JPH0450100U
Application number: JP9167690U
Authority: JP
Priority date: 1990-08-31
Filing date: 1990-08-31
Publication date: 1992-04-27
Anticipated expiration: 2005-02-22
Also published as: JPH076959Y2

Description

[Brief explanation of the drawing]

第１図〜第３図は、本考案通電加熱具の実施態
様を例示する縦断面図、第４図〜第７図は、本考
案通電加熱具に適用される通電発熱体の特性を示
す各グラフであり、第４図は温度と抵抗の特性、
第５図は各温度における体積抵抗率の許容範囲、
第６図は室温変化による発熱体の安定温度の関係
、第７図は通電時間と発熱体の発熱温度の関係を
それぞれ示す。第８図は本考案通電加熱具の一実
施例の縦断面図、第９図は他の実施例の先端部の
要部斜視図、第１０図は本考案通電発熱具を用い
て、熱変色層が設けられた人形用衣服を変色させ
る状態の説明図、第１１図は前記人形衣服を変色
させて他の様相を顕出させる状態図、第１２図は
熱変色層で非変色像を隠蔽した絵本、第１３図は
前記絵本の隠蔽個所を変色させて非変色像を顕出
させる状態図、第１４図は色彩記憶性感温色素の
熱変色特性を示すグラフである。１……通電加熱具、２……本体、３……発熱体
、４……伝熱部材、５……被覆部材、６……リー
ド線、７……電極、８……熱変色層、９……非変
色像、１０……電池。 1 to 3 are longitudinal sectional views illustrating embodiments of the energization heating tool of the present invention, and FIGS. 4 to 7 show characteristics of the energization heating element applied to the energization heating tool of the present invention. It is a graph, and Figure 4 shows the characteristics of temperature and resistance,
Figure 5 shows the allowable range of volume resistivity at each temperature.
FIG. 6 shows the relationship between the stable temperature of the heating element due to changes in room temperature, and FIG. 7 shows the relationship between the energization time and the heat generation temperature of the heating element. Fig. 8 is a longitudinal cross-sectional view of one embodiment of the energizing heating tool of the present invention, Fig. 9 is a perspective view of the main part of the tip of another embodiment, and Fig. 10 is a thermal discoloration using the energizing heating tool of the present invention. An explanatory diagram of a state in which a doll's clothing provided with a layer changes color, FIG. 11 shows a state in which the doll's clothing changes color to reveal another aspect, and FIG. 12 shows a state in which a thermochromic layer hides a non-discolored image. FIG. 13 is a state diagram showing the state in which the hidden portions of the picture book are changed color to reveal a non-color-changed image, and FIG. 14 is a graph showing the thermochromic characteristics of the color-memory temperature-sensitive dye. DESCRIPTION OF SYMBOLS 1... Current heating tool, 2... Main body, 3... Heating element, 4... Heat transfer member, 5... Covering member, 6... Lead wire, 7... Electrode, 8... Thermochromic layer, 9 ...Non-color image, 10...Battery.

Claims

[Claims for Utility Model Registration] 1. An energizing heating tool that heats and discolors the contact portion of a toy, picture book, educational material, etc. that has a thermochromic layer provided on at least a portion of its surface by bringing it into contact with the thermochromic layer. The structure is such that an energized heating element housed in the main body generates heat, and a heat transfer member disposed in contact with the heating element is heated to function, wherein the energized heating element
(a) A resistance heating element whose temperature coefficient of electrical resistance exhibits a positive value in the temperature range of 25°C to 70°C,
(b) Volume resistivity (ρ ₂₅ ) at 25°C is 9.
8×10 ⁻³ Ω. cm~2.97×10 ⁵ Ω. cm,
(c) Ratio of volume resistivity at 25℃ and 70℃ (
ρ ₇₀ /ρ ₂₅ ) is expressed by the following formula: 5≦(ρ ₇₀ /ρ _{2
5} ) Must be within the range of ≦400, generate heat by applying a voltage of 0.8V to 40V, and self-temperature control to any temperature within the temperature range of 25℃ to 70℃ with a heat generation saturation temperature An electric heating device consisting of a thermistor. 2. The electrical heating tool according to claim 1, wherein the heat transfer member is a metal member, and the surface of the member is covered with a thermally conductive silicone rubber or plastic thin film.