JPH0477999U - - Google Patents
Info
- Publication number
- JPH0477999U JPH0477999U JP12036390U JP12036390U JPH0477999U JP H0477999 U JPH0477999 U JP H0477999U JP 12036390 U JP12036390 U JP 12036390U JP 12036390 U JP12036390 U JP 12036390U JP H0477999 U JPH0477999 U JP H0477999U
- Authority
- JP
- Japan
- Prior art keywords
- temperature
- heat
- heating element
- volume resistivity
- range
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000010438 heat treatment Methods 0.000 claims description 8
- 239000002184 metal Substances 0.000 claims description 2
- 230000020169 heat generation Effects 0.000 claims 1
- 239000012774 insulation material Substances 0.000 description 1
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 description 1
Description
第１図は本考案加熱ボツクスに熱変色性カード
を挿入前の状態を示す斜視図、第２図は前記熱変
色性カードを挿入状態の斜視図、第３図は前記熱
変色性カードを取り出した状態の斜視図、第４図
は第２図の状態の縦断面図である。
１……本考案通電加熱ボツクス、２……収容部
、２１……金属板片、２２……通電発熱体、２３
……リード線、２４……電源電池、２５……断熱
材、２６……弾発体、３……熱変色性カード、３
１……熱変色層、３２……非変色像。
Fig. 1 is a perspective view showing the state before the thermochromic card is inserted into the heating box of the present invention, Fig. 2 is a perspective view of the thermochromic card inserted, and Fig. 3 is a perspective view showing the thermochromic card taken out. FIG. 4 is a vertical sectional view of the state shown in FIG. 2. DESCRIPTION OF SYMBOLS 1...Electrification heating box of the present invention, 2...Accommodating portion, 21...Metal plate piece, 22...Electrification heating element, 23
... Lead wire, 24 ... Power supply battery, 25 ... Insulation material, 26 ... Bullet body, 3 ... Thermochromic card, 3
1... Thermochromic layer, 32... Non-chromic image.
Claims (1)
変色させる通電加熱ボツクスであつて、収容部内
壁の少なくとも一部が、金属板片で形成されてお
り、前記金属板片の背部には低電圧の印加により
発熱する通電発熱体が配置されてなり、前記通電
発熱体は、(イ)少なくとも２５℃〜７０℃の温度
範囲において、電気抵抗の温度係数が正の値を示
す抵抗発熱体であり、(ロ)２５℃における体積抵
抗率（ρ２５）が９．８×１０−３Ω．cm〜２．
９７×１０５Ω．cm、(ハ)２５℃と７０℃におけ
る体積抵抗率の比率（ρ７０／ρ２５）が、次式
５≦（ρ７０／ρ２５）≦４００の範囲内にある
こと、の各要件を満たし、０．８Ｖ〜４０Ｖの電
圧印加により発熱し、発熱飽和温度が２５℃〜７
０℃の温度範囲内の任意の温度に自己温度制御さ
れるサーミスタにより構成されてなる熱変色性玩
具用通電加熱ボツクス。 This is an energized heating box in which a thermochromic toy is housed in a manner that allows it to be taken out and put in freely, and which changes color due to heat, and at least a part of the inner wall of the housing part is formed of a piece of metal plate, and a low voltage An energized heating element that generates heat upon application of is disposed, and the energized heating element is (a) a resistance heating element whose temperature coefficient of electrical resistance exhibits a positive value in a temperature range of at least 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, and (c) the ratio of volume resistivity at 25°C and 70°C (ρ 70 /ρ 25 ) is within the range of the following formula 5≦(ρ 70 /ρ 25 )≦400. , heat is generated by applying a voltage of 0.8V to 40V, and the heat generation saturation temperature is 25℃ to 7℃.
An electrical heating box for a thermochromic toy, which is comprised of a thermistor that self-temperature-controls to any temperature within the temperature range of 0°C.
Priority Applications (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12036390U JPH0477999U (en) | 1990-11-18 | 1990-11-18 | |
| US07/750,245 US5376772A (en) | 1990-08-31 | 1991-08-27 | Electrothermal instrument with heat generating element of sintered BaTiO3 in contact with heat transmitting member |
| CA002050233A CA2050233C (en) | 1990-08-31 | 1991-08-29 | Electrothermal color-varying instrument |
| DE69111717T DE69111717T2 (en) | 1990-08-31 | 1991-08-30 | Electro-thermal instrument for color change. |
| EP91307947A EP0473447B1 (en) | 1990-08-31 | 1991-08-30 | Electrothermal color-varying instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12036390U JPH0477999U (en) | 1990-11-18 | 1990-11-18 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0477999U true JPH0477999U (en) | 1992-07-07 |
Family
ID=31868272
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12036390U Pending JPH0477999U (en) | 1990-08-31 | 1990-11-18 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0477999U (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62201174A (en) * | 1986-02-28 | 1987-09-04 | 株式会社 タカラ | House toy |
-
1990
- 1990-11-18 JP JP12036390U patent/JPH0477999U/ja active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62201174A (en) * | 1986-02-28 | 1987-09-04 | 株式会社 タカラ | House toy |
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