JPH02155187A - Positive temperature coefficient thermistor heating element - Google Patents
Positive temperature coefficient thermistor heating elementInfo
- Publication number
- JPH02155187A JPH02155187A JP63309481A JP30948188A JPH02155187A JP H02155187 A JPH02155187 A JP H02155187A JP 63309481 A JP63309481 A JP 63309481A JP 30948188 A JP30948188 A JP 30948188A JP H02155187 A JPH02155187 A JP H02155187A
- Authority
- JP
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- Prior art keywords
- temperature coefficient
- positive temperature
- heating element
- coefficient thermistor
- insulating sheet
- Prior art date
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Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
【発明の詳細な説明】
産業上の利用分野
本発明は正特性サーミスタを用いた自己温度制御性を有
した正特性サーミスタ発熱体に関するもので、特に金属
放熱体を用いて発熱量を犬きくした温風用発熱体に関す
る。[Detailed Description of the Invention] Industrial Field of Application The present invention relates to a positive temperature coefficient thermistor heating element having self-temperature control using a positive temperature coefficient thermistor, and in particular to a positive temperature coefficient thermistor heating element that uses a metal heat sink to minimize the amount of heat generated. Regarding a heating element for hot air.
従来の技術
正特性サーミスタはある温度（キュリー温度）以上にな
ると、急激にその抵抗値が上昇する性質を持った半導体
セラミクスである。そのため、電圧を印加すると発熱し
、キュリー温度を超えるとその温度上昇は正まり、一定
の温度を保つ。この１、発明の名称
正特性サーミスタ発熱体
２、特許請求の範囲
（１）両面に電極が付与された複数の正特性サーミスタ
と、その電極面に当接された金属放熱体とを有し、少な
くとも一つの金属放熱体と正特性サーミスタとの間に、
共通電極板と多数の貫通孔の開いた絶縁シートとが重ね
てあり、上記共 ３、通電極板は正特性サーミスタの電
極と電気的に接触していると共に上記絶縁シートが正特
性サーミスタの電極と金属放熱体とを絶縁しており、上
記正特性サーミスタ、共通電極板、絶縁シートおよび金
属放熱体は絶縁性接着剤で固着されている正特性サーミ
スタ発熱体。A conventional positive temperature coefficient thermistor is a semiconductor ceramic whose resistance value rapidly increases when the temperature exceeds a certain temperature (Curie temperature). Therefore, when a voltage is applied, it generates heat, and once the Curie temperature is exceeded, the temperature rise corrects and the temperature remains constant. This 1. Name of the invention Positive temperature coefficient thermistor heating element 2. Claims (1) Comprising a plurality of positive temperature coefficient thermistors with electrodes provided on both sides, and a metal heat radiator in contact with the electrode surfaces, between at least one metal heat sink and a positive temperature coefficient thermistor;
A common electrode plate and an insulating sheet with a large number of through holes are stacked on top of each other. and a metal heat sink, the positive temperature coefficient thermistor, the common electrode plate, the insulating sheet, and the metal heat sink being fixed with an insulating adhesive.
（２）絶縁シートが柔らかい材質でできている特許請求
の範囲第１項に記載の正時、性サーミスタ発熱体。(2) The on-the-hour thermistor heating element according to claim 1, wherein the insulating sheet is made of a soft material.
（３）絶縁シートが繊維の集合体よりなる特許請求の範
叩第１項または第２項に記載の正特性サーように、過熱
しない安全な発熱体ということで幅広く応用されている
。また、このような発熱体の発熱量を増加させるため、
正特性サーミスタに金属放熱体を固着させる方法は、す
でにいくつか提案されている。一つは、金属放熱体を直
接、正特性サーミスタの電極に固着させ、金属放熱体が
給電端子を兼ねている構造のものである。さらに、その
金属放熱体を絶縁させ、手が触れたり、金属棒などが触
れたりしても安全にしたものもあった。(3) As described in claim 1 or 2, in which the insulating sheet is made of an aggregate of fibers, it is widely used as a safe heating element that does not overheat. In addition, in order to increase the calorific value of such a heating element,
Several methods have already been proposed for attaching a metal heat sink to a positive temperature coefficient thermistor. One is a structure in which a metal heat radiator is directly fixed to the electrode of a positive temperature coefficient thermistor, and the metal heat radiator also serves as a power supply terminal. In addition, some had insulated metal heat sinks, making them safe even when touched by hands or metal rods.
第８図は従来の正特性サーミスタ発熱体の斜視図を示す
。第９図はその分解斜視図である。第８図、第９図にお
いて、１は正特性サーミスタで、２はその両面に付与さ
れ念アルミニウム溶射などによる電極である。３はアル
ミニウムなどの熱伝導率の良い金属による金属放熱体で
、表面積を大きくするために多数の貫通孔が開いている
。上記正特性サーミスタ１をそれぞれの電極２が一平面
になるように３枚並べ、上記金属放熱体３を二つ、正特
性サーミスタ１の訓電極面に、それぞれアルミナなどの
絶縁シート４およびアルミニウム薄板などの共通電極板
５を挾んで接着剤などで固着（図示略）している。FIG. 8 shows a perspective view of a conventional PTC thermistor heating element. FIG. 9 is an exploded perspective view thereof. In FIGS. 8 and 9, numeral 1 is a positive temperature coefficient thermistor, and numeral 2 is an electrode provided on both sides of the thermistor by thermal spraying with aluminum. 3 is a metal heat sink made of a metal with good thermal conductivity such as aluminum, and has a large number of through holes to increase the surface area. Three of the positive temperature coefficient thermistors 1 are arranged so that their respective electrodes are in one plane, two of the metal heat sinks 3 are mounted, and an insulating sheet 4 made of alumina or the like and a thin aluminum plate are respectively placed on the training electrode surface of the positive temperature coefficient thermistor 1. A common electrode plate 5 such as the like is sandwiched between them and fixed with adhesive or the like (not shown).
発明が解決しようとする課題
このような従来の正特性サーミスタ発熱体には、次のよ
うな問題があった。これは絶縁シートを金属放熱体と正
特性サーミスタの電極との間に挾むため、正特性サーミ
スタに電気を供給するための共通電極板が必要となって
いた。そのため、これらを接着剤で固着するため、何回
も接着剤を塗布する作業が必要で、工数が多大なものに
なっていた。すなわち、金属放熱体を直接、正特性サー
ミスタの電極に固着していた場合は、金属放熱体と正特
性サーミスタの間に１回接着剤を塗布すれば良かったが
、金属放熱体を絶縁したため、その回数は、金属放熱体
と絶縁シート、絶縁シートと共通電極板、共通電極板と
正特性サーミスタと３回も必要となり、さらにその回数
は両面では６回となり、組み立て工数の増大は莫大なも
のとなっていた。Problems to be Solved by the Invention The conventional positive temperature coefficient thermistor heating element has the following problems. Since the insulating sheet is sandwiched between the metal heat sink and the electrode of the PTC thermistor, a common electrode plate is required to supply electricity to the PTC thermistor. Therefore, in order to fix these pieces with adhesive, it is necessary to apply the adhesive many times, resulting in a large number of man-hours. In other words, if the metal heat radiator had been directly fixed to the electrode of the PTC thermistor, it would have been sufficient to apply adhesive once between the metal heat radiator and the PTC thermistor, but since the metal heat radiator was insulated, Three times are required for the metal heat sink and insulating sheet, insulating sheet and common electrode plate, common electrode plate and positive temperature coefficient thermistor, and six times for both sides, resulting in a huge increase in assembly man-hours. It became.
課題を解決するための手段
このような課題を解決するため、本発明にかかる正特性
サーミスタ発熱体の構成は、両面に電極が付与された複
数の正特性サーミスタと、その電極面に当接された金属
放熱体とを有し、少なくとも一つの金属放熱体と正特性
サーミスタとの間に、共通電極板と多数の貫通孔の開い
た絶縁シートとが重ねてあり、上記共通電極板は正特性
サーミスタの電極と電気的に接触していると共に上記絶
縁シートが正特性サーミスタの電極と金属放熱体とを絶
縁しており、上記正特性サーミスタ、共通電極板、絶縁
シートおよび金属放熱体は絶縁性接着剤で固着されてい
るものである。Means for Solving the Problems In order to solve the above problems, the positive temperature coefficient thermistor heating element according to the present invention has a configuration including a plurality of positive temperature coefficient thermistors each having electrodes on both sides, and a positive temperature coefficient thermistor having electrodes on both sides. A common electrode plate and an insulating sheet with a large number of through holes are stacked between at least one metal heat sink and the positive temperature coefficient thermistor, and the common electrode plate has a positive temperature coefficient thermistor. The insulating sheet is in electrical contact with the electrode of the thermistor and insulates the electrode of the PTC thermistor from the metal heat sink, and the PTC thermistor, common electrode plate, insulating sheet, and metal heat sink are insulating. It is fixed with adhesive.
作用
本発明の構成において、共通電極板に電圧を印加すると
、電流はそれに接触している正特性サーミスタの電極を
通じて、正特性サーミスタに流れる。そのため、正特性
サーミスタは発熱し、キュリー温度付近でその温度は一
定となる。そして、正特性サーミスタから発生する熱は
、共通電極板。Operation In the arrangement of the present invention, when a voltage is applied to the common electrode plate, current flows through the positive temperature coefficient thermistor through the positive temperature coefficient thermistor electrodes that are in contact with it. Therefore, the positive temperature coefficient thermistor generates heat, and its temperature remains constant around the Curie temperature. The heat generated from the positive temperature coefficient thermistor is transferred to the common electrode plate.
絶縁シートおよび絶縁シートに開けられた貫通孔を埋め
ている絶縁性接着剤を通って、金属放熱体に伝わる。し
たがって、金属放熱体に空気を強制対流させると、熱は
空気に伝わり加熱される。The heat is transmitted to the metal heat radiator through the insulating sheet and the insulating adhesive filling the through holes made in the insulating sheet. Therefore, when air is forced to convect through a metal heat sink, heat is transferred to the air and heated.
また、本発明の構成によれば、正特性サーミスタ発熱体
を組み立てる時には、接着剤を正特性サーミスタと共通
電極板との間、および金属放熱体と絶縁シートとの間に
塗布すれば良く、絶縁シートと共通電極板との間は、絶
縁シートに開けられた貫通孔から滲みでた接着剤で賄う
ことができ、接着剤の塗布の回数が少なくてすむことと
なる。Furthermore, according to the configuration of the present invention, when assembling the positive temperature coefficient thermistor heating element, it is sufficient to apply adhesive between the positive temperature coefficient thermistor and the common electrode plate, and between the metal heat sink and the insulating sheet. The gap between the sheet and the common electrode plate can be filled with the adhesive that oozes out from the through holes made in the insulating sheet, and the number of times the adhesive needs to be applied can be reduced.
実施例
第１図〜第３図に本発明による正特性サーミスタ発熱体
の一実施例を示す。第１図は斜視図、第２図は分解斜視
図、第３図は要部拡大断面図を示す。第１図〜第３図に
おいて、６は両面にアルミニウム溶射などによる電極７
が付与された正特性サーミスタで、この実施例では三つ
用いられている。８はアルミニウム薄板などによる共通
電極板、９は多数の貫通孔の開いたアルミナなどによる
耐熱性の絶縁シート、１ｏはアルミニウムなどによる金
属放熱体である。これらの部品は一光面に並べられた正
特性サーミスタ６の両側にそれぞれ、順次、共通電極板
８、絶縁シート９、金属放熱体１０と当接され、シリコ
ン系接着剤などの絶縁性接着剤１１によって固着されて
いる。ここで、共通電極板８は正特性サーミスタ６の電
極面の微小な凸部と接触している。Embodiment FIGS. 1 to 3 show an embodiment of a positive temperature coefficient thermistor heating element according to the present invention. FIG. 1 is a perspective view, FIG. 2 is an exploded perspective view, and FIG. 3 is an enlarged sectional view of main parts. In Figures 1 to 3, 6 is an electrode 7 made of aluminum sprayed on both sides.
Three positive temperature coefficient thermistors are used in this embodiment. 8 is a common electrode plate made of a thin aluminum plate, 9 is a heat-resistant insulating sheet made of alumina or the like having a large number of through holes, and 1o is a metal heat sink made of aluminum or the like. These parts are sequentially brought into contact with a common electrode plate 8, an insulating sheet 9, and a metal heat sink 10 on both sides of a positive temperature coefficient thermistor 6 arranged in one optical plane, and are coated with an insulating adhesive such as a silicon adhesive. It is fixed by 11. Here, the common electrode plate 8 is in contact with a minute convex portion on the electrode surface of the positive temperature coefficient thermistor 6.
この正特性サーミスタ発熱体を組み立てる時には、絶縁
性接着剤１１は、例えば正特性サーミスタ６の両側に塗
布し、その両側に共通電極板８と絶縁シート９を順次尚
接し、その後、絶縁性接着剤１１をたっぷり塗った金属
放熱体１Ｑを押し当て、硬化すれば良い。その時、金属
放熱体１０に塗られた接着剤１１は、絶縁シート９に開
けられた貫通孔を通ってしみだし、絶縁シート９の両側
の金属放熱体１０と共通電極板８とを固着できるもので
ある。When assembling this PTC thermistor heating element, the insulating adhesive 11 is applied, for example, to both sides of the PTC thermistor 6, the common electrode plate 8 and the insulating sheet 9 are sequentially attached to both sides, and then the insulating adhesive is applied to both sides of the PTC thermistor 6. All you have to do is press the metal heat sink 1Q coated with No. 11 and let it harden. At that time, the adhesive 11 applied to the metal heat radiator 10 seeps through the through holes made in the insulating sheet 9, and is capable of fixing the metal heat radiator 10 and the common electrode plate 8 on both sides of the insulating sheet 9. It is.
このように、多数の貫通孔の開いた絶縁シート９を用い
ることによって、接着剤１１の塗布回数が少なくなり、
組み立て工数を減らすことができる。また、その貫通孔
に接着剤１１が浸透しており、高熱伝導の接着剤１１を
用いれば、正特性サーミスタ６と金属放熱体１０との熱
結合が良くなり、発熱量の大きな正特性サーミスタ発熱
体を提供できる。In this way, by using the insulating sheet 9 with a large number of through holes, the number of applications of the adhesive 11 is reduced.
Assembly man-hours can be reduced. In addition, the adhesive 11 has penetrated into the through hole, and if the adhesive 11 with high thermal conductivity is used, the thermal coupling between the positive temperature coefficient thermistor 6 and the metal heat sink 10 is improved, and the positive temperature coefficient thermistor generates heat with a large amount of heat. I can donate my body.
また、絶縁シート９にポリイミドやテフロンなどの柔軟
性のあるものを用いれば、金属放熱体１０や正特性サー
ミスタ６の面に少々のそりや凹凸があっても十分に密着
させることができ、アルミナなどを用いた時のように割
れたりすることがなく、信頼性が高く、発熱量の大きな
正特性サーミスタ発熱体が得られる。また、このような
耐熱性が高く柔軟性のあるポリイミドやテフロンなどは
表面が不活性で安定性があるため、接着剤１１を用いて
も接着しないものであるが、本発明のように、その絶縁
シート９に多数の貫通孔を開けておけば、第３図に示す
ようにそれ自身に接着性がなくても、貫通孔に入った接
着剤１１がその両側の金属放熱体１０と共通電極板８と
を接着させることができる。Furthermore, if the insulating sheet 9 is made of a flexible material such as polyimide or Teflon, even if the surface of the metal heat sink 10 or positive temperature coefficient thermistor 6 has slight warpage or unevenness, it can be brought into close contact with the metal heat sink 10 or the positive temperature coefficient thermistor 6. It is possible to obtain a positive temperature coefficient thermistor heating element that is highly reliable and generates a large amount of heat without cracking as would be the case when other materials are used. In addition, since the surface of polyimide, Teflon, etc., which has high heat resistance and flexibility, is inert and stable, it will not adhere even if adhesive 11 is used. If a large number of through holes are made in the insulating sheet 9, the adhesive 11 that has entered the through holes will connect with the metal heat sink 10 on both sides of the through holes and the common electrode, even if the insulating sheet 9 does not have adhesive properties as shown in FIG. The plate 8 can be bonded to the plate 8.
また、絶縁シート９としてガラス繊維やセラミックファ
イバーなどを織り込んだり、集合させたものを用いると
、それ自身はすでに多数の貫通孔が開いており、後加工
で貫通孔を開ける必要がない。また、ガラスやセラミン
クは樹脂よりも耐熱が高く、熱伝導率も大きいので、信
頼性が高く、発熱量の大きな正特性サーミスタ発熱体を
提供できる。Furthermore, if a material made of woven or aggregated glass fibers or ceramic fibers is used as the insulating sheet 9, the sheet itself already has a large number of through holes, and there is no need to make through holes in post-processing. Further, since glass and ceramics have higher heat resistance and higher thermal conductivity than resins, it is possible to provide a positive temperature coefficient thermistor heating element that is highly reliable and generates a large amount of heat.
第４図は本発明の別の実施例の正特性サーミスタ発熱体
を示す分解斜視図、第５図は要部拡大断面図である。図
において、１３は多数の貫通孔の開いたアルミニウムな
どの共通電極板である。このような共通電極板１３を用
いた場合、絶縁性接着剤１６の塗布は金属放熱体１６０
面かあるいは正特性サーミスタ１１０面のどちらか一面
に塗れば、共通電極板１３と絶縁シート１４に開いた貫
通孔の全ての面に接着剤１６がしみ出すので、工数の大
幅な削減を実現することができる。また、１２は電極で
ある。FIG. 4 is an exploded perspective view showing a PTC thermistor heating element according to another embodiment of the present invention, and FIG. 5 is an enlarged sectional view of the main parts. In the figure, 13 is a common electrode plate made of aluminum or the like with a large number of through holes. When such a common electrode plate 13 is used, the insulating adhesive 16 is applied to the metal heat sink 160.
If the adhesive 16 is applied to either the surface or the surface of the positive temperature coefficient thermistor 110, the adhesive 16 will seep out to all surfaces of the through holes opened in the common electrode plate 13 and the insulating sheet 14, resulting in a significant reduction in man-hours. be able to. Further, 12 is an electrode.
第６図は本発明のさらに別の実施例の正特性サーミスタ
発熱体を示す分解斜視図、第７図は第６図のＡ−入方向
より見た断面図である。図において、１９は幅方向の大
きさが絶縁シート２０の接着布の大きさに比べて極めて
狭いアルミニウムなどの共通電極板である。このような
共通電極板１９を用いれば、第４図、第６図に示した実
施例と同様に、絶縁性接着剤２２の塗布は金属放熱体２
１の面かあるいは正特性サーミスタ１７０面のどちらか
一面に塗ればよく、工数の大幅な削減を実現することが
できる。また、１８は電極である。FIG. 6 is an exploded perspective view showing a PTC thermistor heating element according to yet another embodiment of the present invention, and FIG. 7 is a sectional view taken from the A-in direction of FIG. 6. In the figure, reference numeral 19 denotes a common electrode plate made of aluminum or the like whose width in the width direction is extremely narrow compared to the size of the adhesive cloth of the insulating sheet 20. If such a common electrode plate 19 is used, the insulating adhesive 22 can be applied to the metal heat sink 2, similar to the embodiments shown in FIGS. 4 and 6.
It is sufficient to coat either one surface of the positive temperature coefficient thermistor 170 or the surface of the positive temperature coefficient thermistor 170, which can significantly reduce the number of man-hours. Further, 18 is an electrode.
以上に述べた実施例は金属放熱体の両方を絶縁する例の
みであるが、片方のみを絶縁する場合でも本発明による
構成が有効であることは言うまでもない。Although the embodiments described above are only examples in which both metal heat radiators are insulated, it goes without saying that the configuration according to the present invention is effective even when only one of the metal heat radiators is insulated.
発明の効果
以上に述べたように、本発明によれば接着剤の塗布の回
数が少なく、工数が少なく、安価にして金属放熱体を絶
縁した正特性サーミスタ発熱体を提供できる。また、絶
縁シートの材質が幅広く選定でき、信頼性が高く、発熱
量の大きな正特性サーミスタ発熱体を提供できる。Effects of the Invention As described above, according to the present invention, it is possible to provide a PTC thermistor heating element in which the number of times of adhesive application is reduced, the number of man-hours is reduced, and the metal heat radiating element is insulated at low cost. Furthermore, a wide variety of materials can be selected for the insulating sheet, and a positive temperature coefficient thermistor heating element that is highly reliable and generates a large amount of heat can be provided.
第１図は本発明による正特性サーミスタ発熱体の一実施
例を示す斜視図、第２図は同分解斜視図、第３図は同要
部拡大断面図、第４図は本発明の別の実施例の正特性サ
ーミスタ発熱体を示す分解斜視図、第５図は同要部拡大
断面図、第６図は本発明のさらに別の実施例の正特性サ
ーミスタ発熱体を示す分解斜視図、第７図は第６図のＡ
−Ａ方向より見た断面図、第８図は従来の正特性サーミ
スタ発熱体を示す斜視図、第９図はその分解斜視図であ
る。
６．１１．１７・・・・・・正特性サーミスタ、７１１
２．１８・・・・パ電極、８，１３．１９・・・・・・
共通電極板、９ 、１４ 、２０−・・・−・絶縁シー
ト、１０゜１５．２１・・・・・・金属放熱体、１１，
１６．２２−°。
・・絶縁性接着剤。
代理人の氏名 弁理士 粟 野 重 孝 ほか１名第
図
搗
図
正一件丁一二スタ
第
図
第
図
第
図FIG. 1 is a perspective view showing one embodiment of a positive temperature coefficient thermistor heating element according to the present invention, FIG. 2 is an exploded perspective view of the same, FIG. 3 is an enlarged sectional view of the same main part, and FIG. FIG. 5 is an exploded perspective view showing a PTC thermistor heating element according to an embodiment; FIG. 5 is an enlarged sectional view of the same essential parts; FIG. Figure 7 is A of Figure 6.
8 is a perspective view showing a conventional positive temperature coefficient thermistor heating element, and FIG. 9 is an exploded perspective view thereof. 6.11.17・・・Positive characteristic thermistor, 711
2.18...Pa electrode, 8,13.19...
Common electrode plate, 9, 14, 20--Insulating sheet, 10°15.21...Metal heat sink, 11,
16.22-°. ...Insulating adhesive. Name of agent: Patent attorney Shigetaka Awano and one other person
Claims (5)
と、その電極面に当接された金属放熱体とを有し、少な
くとも一つの金属放熱体と正特性サーミスタとの間に、
共通電極板と多数の貫通孔の開いた絶縁シートとが重ね
てあり、上記共通電極板は正特性サーミスタの電極と電
気的に接触していると共に上記絶縁シートが正特性サー
ミスタの電極と金属放熱体とを絶縁しており、上記正特
性サーミスタ，共通電極板，絶縁シートおよび金属放熱
体は絶縁性接着剤で固着されている正特性サーミスタ発
熱体。(1) It has a plurality of PTC thermistors each having electrodes on both sides, and a metal heat radiator in contact with the electrode surfaces, and between at least one metal heat radiator and the PTC thermistor,
A common electrode plate and an insulating sheet with a large number of through holes are stacked on top of each other, and the common electrode plate is in electrical contact with the electrodes of the PTC thermistor, and the insulating sheet is in contact with the electrodes of the PTC thermistor for metal heat dissipation. A positive temperature coefficient thermistor heating element in which the positive temperature coefficient thermistor, common electrode plate, insulating sheet, and metal heat sink are fixed with an insulating adhesive.
の範囲第１項に記載の正特性サーミスタ発熱体。(2) The PTC thermistor heating element according to claim 1, wherein the insulating sheet is made of a soft material.
囲第１項または第２項に記載の正特性サーミスタ発熱体
。(3) A positive temperature coefficient thermistor heating element according to claim 1 or 2, wherein the insulating sheet is made of an aggregate of fibers.
の範囲第１項，第２項または第３項に記載の正特性サー
ミスタ発熱体。(4) A positive temperature coefficient thermistor heating element according to claim 1, 2 or 3, wherein the common electrode plate has a large number of through holes.
面の大きさに比べ、極めて小さい特許請求の範囲第１項
，第２項または第３項に記載の正特性サーミスタ発熱体
。(5) A positive temperature coefficient thermistor heating element according to claim 1, 2, or 3, in which the size of the common electrode plate in the width direction is extremely smaller than the size of the bonding surface of the insulating sheet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63309481A JP2800207B2 (en) | 1988-12-07 | 1988-12-07 | Positive characteristic thermistor heating element |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63309481A JP2800207B2 (en) | 1988-12-07 | 1988-12-07 | Positive characteristic thermistor heating element |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH02155187A true JPH02155187A (en) | 1990-06-14 |
| JP2800207B2 JP2800207B2 (en) | 1998-09-21 |
Family
ID=17993507
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63309481A Expired - Fee Related JP2800207B2 (en) | 1988-12-07 | 1988-12-07 | Positive characteristic thermistor heating element |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2800207B2 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100429382B1 (en) * | 2001-12-17 | 2004-04-29 | 삼화콘덴서공업주식회사 | Axial type polymer ptc device of electrode terminal with a hole |
| JP2009544124A (en) * | 2006-07-20 | 2009-12-10 | エプコス アクチエンゲゼルシャフト | Resistance device and method for manufacturing the resistance device |
| JP2022097721A (en) * | 2022-05-13 | 2022-06-30 | カシン工業株式会社 | Insulated heater and heater device |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57109286A (en) * | 1980-12-26 | 1982-07-07 | Matsushita Electric Industrial Co Ltd | Positivi temperature coefficient thermistor heater and method of producing same |
| JPS5885787U (en) * | 1981-12-04 | 1983-06-10 | 松下電器産業株式会社 | constant temperature heating element |
| JPS6259989U (en) * | 1985-10-03 | 1987-04-14 |
-
1988
- 1988-12-07 JP JP63309481A patent/JP2800207B2/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57109286A (en) * | 1980-12-26 | 1982-07-07 | Matsushita Electric Industrial Co Ltd | Positivi temperature coefficient thermistor heater and method of producing same |
| JPS5885787U (en) * | 1981-12-04 | 1983-06-10 | 松下電器産業株式会社 | constant temperature heating element |
| JPS6259989U (en) * | 1985-10-03 | 1987-04-14 |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100429382B1 (en) * | 2001-12-17 | 2004-04-29 | 삼화콘덴서공업주식회사 | Axial type polymer ptc device of electrode terminal with a hole |
| JP2009544124A (en) * | 2006-07-20 | 2009-12-10 | エプコス アクチエンゲゼルシャフト | Resistance device and method for manufacturing the resistance device |
| JP2022097721A (en) * | 2022-05-13 | 2022-06-30 | カシン工業株式会社 | Insulated heater and heater device |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2800207B2 (en) | 1998-09-21 |
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