JPS6142291Y2 - - Google Patents
Info
- Publication number
- JPS6142291Y2 JPS6142291Y2 JP1978012460U JP1246078U JPS6142291Y2 JP S6142291 Y2 JPS6142291 Y2 JP S6142291Y2 JP 1978012460 U JP1978012460 U JP 1978012460U JP 1246078 U JP1246078 U JP 1246078U JP S6142291 Y2 JPS6142291 Y2 JP S6142291Y2
- Authority
- JP
- Japan
- Prior art keywords
- electrode
- heat
- band
- bands
- generating
- 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.)
- Expired
Links
- 238000010438 heat treatment Methods 0.000 claims description 32
- 239000003973 paint Substances 0.000 claims description 19
- 229910052751 metal Inorganic materials 0.000 claims description 13
- 239000002184 metal Substances 0.000 claims description 13
- 239000000758 substrate Substances 0.000 claims description 11
- 239000011888 foil Substances 0.000 claims description 7
- 238000010586 diagram Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 239000002245 particle Substances 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 239000003822 epoxy resin Substances 0.000 description 2
- 238000005530 etching Methods 0.000 description 2
- 229920000647 polyepoxide Polymers 0.000 description 2
- 229910052709 silver Inorganic materials 0.000 description 2
- 239000004332 silver Substances 0.000 description 2
- 229910000679 solder Inorganic materials 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- 238000007796 conventional method Methods 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000020169 heat generation Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000002923 metal particle Substances 0.000 description 1
- 238000007750 plasma spraying Methods 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B3/00—Ohmic-resistance heating
- H05B3/20—Heating elements having extended surface area substantially in a two-dimensional plane, e.g. plate-heater
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B2203/00—Aspects relating to Ohmic resistive heating covered by group H05B3/00
- H05B2203/002—Heaters using a particular layout for the resistive material or resistive elements
- H05B2203/006—Heaters using a particular layout for the resistive material or resistive elements using interdigitated electrodes
Description
【考案の詳細な説明】
本考案は、カーボン系発熱塗料などの発熱塗料
を絶縁性基板上に塗布して面状発熱層を形成した
面状発熱体に関し、さらに詳しくは、面状発熱層
に導電するための一対の導電路の形状を櫛歯状の
ような適当なパターンにして面状発熱層を複数の
発熱ブロツクに区画した面状発熱体に関する。[Detailed description of the invention] The present invention relates to a sheet heating element in which a sheet heating layer is formed by coating a heating paint such as a carbon-based heating paint on an insulating substrate. The present invention relates to a planar heating element in which a pair of conductive paths for conducting electricity are formed into a suitable pattern such as a comb-teeth shape, and a planar heating layer is divided into a plurality of heating blocks.
この種面状発熱体は、一方の通電路−発熱層−
他方の通電路へと流れる電流により発熱層が発熱
するものであり、各種の面状暖房器具、面状加熱
器具などに用いられている。ところが、使用期間
が長くなると、発熱層にヒビ割れが生じることが
あり、このヒビ割れによつて発熱層における通電
系路がしや断されることがある。もし、発熱層の
相対向する両端に帯状の通電路を設けただけの構
成であれば、通電路間を流れる電流の方向と交差
する方向に横断するヒビ割れが一か所でも生じる
と、通電路間に電流が流れなくなり、発熱層全域
が発熱しなくなり、他の部分は何も故障していな
いのに面状発熱体としての寿命がつきる。 This type of sheet heating element has one energizing path - heating layer -
The heating layer generates heat due to the current flowing to the other energized path, and is used in various planar heating devices, planar heating devices, etc. However, if the period of use becomes long, cracks may occur in the heat generating layer, and the current-carrying path in the heat generating layer may be interrupted due to the cracks. If the configuration is such that only band-shaped conductive paths are provided at opposite ends of the heat generating layer, if a crack occurs in even one place that crosses the direction of the current flowing between the conductive paths, the conduction will be affected. Current no longer flows between the electrical circuits, the entire heating layer stops generating heat, and the life of the sheet heating element reaches its end even though no other parts have malfunctioned.
そこで、通電路を櫛歯状のような適当パターン
にして、面状発熱層を複数の発熱ブロツクに区画
するようにしている。この構成であれば、ヒビ割
れによつて例えば１つの発熱ブロツクが発熱しな
くなつても、他の発熱ブロツクは発熱をつづける
ことができ、全体としては一部発熱しない部分が
生じるものの面状発熱体としての使用には差支え
ず、長期間使用できることになる。 Therefore, the current-carrying path is formed into a suitable pattern such as a comb-teeth shape to divide the planar heat-generating layer into a plurality of heat-generating blocks. With this configuration, even if one heat-generating block stops generating heat due to cracks, other heat-generating blocks can continue to generate heat, and although there are some areas that do not generate heat as a whole, the area heats up. There is no problem in using it as a body, and it can be used for a long period of time.
第１図は従来のこの種面状発熱体１を示す。図
において、２は絶縁性基板、３，３は一対の導電
路、４は長方形状の面状発熱層である。導電路
３，３は面状発熱層４の相対向する両側に面状発
熱層４から離れて平行に伸びたリード帯３ａ，３
ａと、リード帯３ａ，３ａから適当間隔おきに数
本分枝した櫛歯状の電極帯３ｂ，３ｂとからそれ
ぞれなつており、異極同志の電極帯３ｂ，３ｂが
隣り合うよう電極帯３ｂ，３ｂは交互に適当間隔
おきに配列した形状になつている。この導電路
３，３と面状発熱層４との電気的接触状態を良好
とするため、銀粒子をエポキシ系樹脂中に分散さ
せた導電塗料を絶縁性基板２上に図に示すような
パターンに印刷して熱処理を施して導電路３，３
全体をつくり、それから電極帯群３ｂ，３ｂ全域
に亘る範囲に発熱塗料を塗布して面状発熱層４を
つくつていた。 FIG. 1 shows a conventional sheet heating element 1 of this type. In the figure, 2 is an insulating substrate, 3 is a pair of conductive paths, and 4 is a rectangular planar heating layer. The conductive paths 3, 3 are lead bands 3a, 3 extending in parallel away from the sheet heating layer 4 on opposite sides of the sheet heating layer 4.
a, and several comb-shaped electrode bands 3b, 3b branched from the lead bands 3a, 3a at appropriate intervals, and the electrode bands 3b are arranged so that the electrode bands 3b, 3b of different polarities are adjacent to each other. , 3b are arranged alternately at appropriate intervals. In order to improve electrical contact between the conductive paths 3, 3 and the planar heating layer 4, a conductive paint containing silver particles dispersed in an epoxy resin is applied to the insulating substrate 2 in a pattern as shown in the figure. conductive paths 3, 3 by printing on and heat-treating.
The whole was made, and then a heat-generating paint was applied over the entire area of the electrode band groups 3b, 3b to form the planar heat-generating layer 4.
すなわち、プリント配線板などに利用されてい
るエツチング方法によつてつくつた金属箔導電路
は、エツヂが切立つた状態になり、導電路表面と
絶縁性基板表面との間には階段状の段差が生じ、
発熱塗料の塗布時にエツヂ部において塗布不足部
分が発生したり、発熱塗料の加熱処理時にエツヂ
部にソリが発生したりし、断線現象を発生しやす
い欠点がある。 In other words, metal foil conductive paths created by the etching method used in printed wiring boards, etc. have steep edges, and there are step-like steps between the conductive path surface and the insulating substrate surface. occurs,
When applying the heat-generating paint, there may be insufficient coating on the edges, warping may occur at the edges during heat treatment of the heat-generating paint, and wire breakage is likely to occur.
これに対して導電塗料を塗布してつくる導電路
３は、塗料の流れ現象のためエツヂが切立つた形
状とは異なつた滑らかな形状で仕上がるため、エ
ツヂ部における発熱塗料の付着不足が生じること
がなく、さらに発熱塗料の塗布後の加熱処理にお
いても導電路３にソリが生じることがなく、断線
現象が発生しにくく、面状発熱層４に対する導電
路として優れている。 On the other hand, the conductive path 3 created by applying conductive paint is finished with a smooth shape that is different from the sharp edges due to the flow phenomenon of the paint, resulting in insufficient adhesion of the heat-generating paint at the edges. Further, even in the heat treatment after application of the heat-generating paint, the conductive path 3 does not warp, and disconnection phenomenon hardly occurs, making it excellent as a conductive path for the planar heat-generating layer 4.
しかし、この導電塗料からなる導電路３は、銅
やアルミニウムからなる金属箔導電路に比較して
導電性が悪い。比較的小電流が流れる電極帯３ｂ
においては特に問題はないが、電極帯３ｂへの電
流が合流して流れるリード帯３ａにおいては導電
性の悪いことが、発熱、材料費の増大などの問題
を引きおこし、実用に供しがたい。 However, the conductive path 3 made of this conductive paint has poor conductivity compared to a metal foil conductive path made of copper or aluminum. Electrode band 3b through which a relatively small current flows
However, the poor conductivity of the lead band 3a through which the current to the electrode band 3b merges causes problems such as heat generation and an increase in material costs, making it difficult to put it to practical use.
本考案は、面状発熱体と接する数本の電極帯は
面状発熱体との電気的接触のよい導電塗料からな
る導電路とし、電極帯への電流が合流して流れる
リード帯は導電性の良好な金属箔からなる導電路
として構成することにより、従来の問題点を解消
するようにしたものである。 In this invention, the several electrode strips in contact with the sheet heating element are conductive paths made of conductive paint that has good electrical contact with the sheet heating element, and the lead band through which the current flows to the electrode strips is conductive. By configuring the conductive path as a conductive path made of a metal foil with good properties, the problems of the conventional method are solved.
以下、本考案の一実施例を図面とともに説明す
る。 An embodiment of the present invention will be described below with reference to the drawings.
第２図および第３図は本面状発熱体１１を示
す。図において、１２は薄いシート状の絶縁性基
板、１３，１３は一対の導電路、１４はカーボン
粒子を樹脂中に分散させて発熱塗料を基板１２上
面に塗布してつくつた長方形状の面状発熱層であ
る。導電路１３，１３は、面状発熱層１４の相対
向する両側に面状発熱層１４から離れて平行に伸
びたリード帯１５，１５と、このリード帯１５，
１５から適当間隔おきに分枝する如く櫛歯状に伸
びた数本の電極帯１６，１６とからそれぞれなつ
ており、異極同志の電極帯１６，１６や隣り合う
よう電極帯１６，１６は交互に適当間隔おきに配
列されている。電極帯１６，１６は銀粒子をエポ
キシ系樹脂に分散させた導電塗料を基板１２表面
に印刷し、ついで高温処理をして硬化させたもの
である。これら電極帯をつくつた後に、電極帯群
全域にまたがつて発熱塗料を印刷し、ついで高温
処理をして硬化させ、面状発熱層１４とする。リ
ード帯１５，１５は、面状発熱層１４をつくつた
後に、銅やアルミニウムからなる良導電性の金属
箔テープを基板１２表面に貼つけてつくつたもの
であり、このリード帯１５，１５と各電極帯１
６，１６との間にはプラズマ溶射によつて溶融金
属粒子を溶着させて金属溶射層１７をつくり、リ
ード帯と電極帯とを電気的に接続し、さらに金属
溶射層１７とリード帯１５との間は両者にまたが
るハンダ１８づけを行なつている。 FIGS. 2 and 3 show the planar heating element 11. FIG. In the figure, 12 is a thin sheet-like insulating substrate, 13, 13 are a pair of conductive paths, and 14 is a rectangular surface made by dispersing carbon particles in resin and applying heat-generating paint to the top surface of the substrate 12. It is a heat generating layer. The conductive paths 13, 13 include lead bands 15, 15 extending in parallel away from the planar heat generating layer 14 on opposite sides of the planar heat generating layer 14;
Each electrode band 16, 16 is made up of several electrode bands 16, 16 extending in a comb-like shape as if branching from 15 at appropriate intervals, and electrode bands 16, 16 of different polarities or adjacent electrode bands 16, 16 are formed. They are arranged alternately at appropriate intervals. The electrode strips 16, 16 are made by printing a conductive paint in which silver particles are dispersed in an epoxy resin on the surface of the substrate 12, and then hardening it by high temperature treatment. After forming these electrode strips, a heat-generating paint is printed over the entire area of the electrode strip group, and then hardened by high-temperature treatment to form the planar heat-generating layer 14. The lead bands 15, 15 are made by attaching a highly conductive metal foil tape made of copper or aluminum to the surface of the substrate 12 after forming the planar heating layer 14. Each electrode strip 1
6 and 16, a metal spray layer 17 is formed by depositing molten metal particles by plasma spraying, electrically connecting the lead band and the electrode band, and further connecting the metal spray layer 17 and the lead band 15. In the meantime, solder 18 is being applied across both sides.
なお、リード帯と電極帯との接続は前述したよ
うな金属溶射による他に、かしめ端子を用いて行
なつてもよい。またリード帯は、金属箔テープを
貼つける方法の他に、プリント配線板などに利用
されているエツチング方法などを用いて形成して
もよい。 Note that the connection between the lead band and the electrode band may be made by using a caulking terminal instead of by metal spraying as described above. In addition to the method of pasting metal foil tape, the lead band may be formed using an etching method used for printed wiring boards and the like.
以上のような構成に基づく本考案の作用効果を
説明すると、次のとおりである。 The effects of the present invention based on the above configuration will be explained as follows.
(1) 長期間使用しているうちに生じる発熱層のヒ
ビ割れによつて、例えば１つの発熱ブロツクへ
の通電がしや断され、その発熱ブロツクでの発
熱がなくなつたとしても、残りの発熱ブロツク
は発熱をつづけることができ、結果的に寿命の
長いものとなる。(1) Due to cracks in the heat generating layer that occur during long-term use, for example, even if the power to one heat generating block is cut off and the heat from that heat generating block is no longer generated, the remaining The heat generating block can continue to generate heat, resulting in a long service life.
(2) 発熱層と接する電極帯は導電塗料の塗布によ
つて形成しているので、エツヂが切立つた形状
でなく斜面状となり、発熱層との電気的ななじ
みがよく、発熱層と電極帯との間で断線現象を
生じることがない。(2) Since the electrode strip in contact with the heat generating layer is formed by applying a conductive paint, the edges are not steeply shaped but sloped, and have good electrical compatibility with the heat generating layer, making it easy to connect the heat generating layer and the electrodes. There is no possibility of disconnection between the wire and the belt.
(3) 複数の電極帯への電流が合流して流れるリー
ド帯は、導電塗料と異なり、金属箔で形成して
いるので、電極帯への電流が合流する比較的大
きな電流値であつて発熱などの問題を生じるこ
とがなく、この種面状発熱体のリード帯として
優れている。(3) Unlike conductive paint, the lead band through which the currents flowing to multiple electrode bands merge is made of metal foil, so the current flows to the electrode bands at a relatively large current value and generates heat. It does not cause such problems and is excellent as a lead band for this kind of sheet heating element.
(4) 前記電極帯と前記リード帯の接続部に金属溶
射層を設けており、この溶射層は前記電極帯へ
強固に溶着し、しかも、半田付けが可能である
ため、電極帯とリード帯との接続が確実で信頼
性の高い面状発熱体が可能となる。(4) A metal sprayed layer is provided at the connection portion of the electrode band and the lead band, and this sprayed layer is firmly welded to the electrode band and can be soldered. This makes it possible to create a planar heating element with a reliable and reliable connection.
第１図は従来の面状発熱体の構成図、第２図は
本考案の一実施例における面状発熱体の構成図、
第３図は同要部の構成図である。
１１……面状発熱体、１２……絶縁性基板、１
３……導電路、１４……面状発熱層、１５……リ
ード帯、１６……電極帯、１７……金属溶射層、
１８……ハンダ。
FIG. 1 is a configuration diagram of a conventional sheet heating element, FIG. 2 is a configuration diagram of a sheet heating element in an embodiment of the present invention,
FIG. 3 is a configuration diagram of the main parts. 11... Planar heating element, 12... Insulating substrate, 1
3... Conductive path, 14... Planar heating layer, 15... Lead band, 16... Electrode band, 17... Metal sprayed layer,
18...Solder.
Claims (1)
ード帯からそそれぞれ適当間隔おきに櫛歯状に延
出した複数の電極帯を異極同志が隣合うよう適当
間隔おきに配列させたパターンを有する導電路
と、前記電極帯群全域にわたつて発熱塗料を塗布
し各電極帯相互間に発熱ブロツクをつくつた面状
発熱層とを備え、前記面状発熱層と接する電極帯
は導電塗料を塗布して形成し、複数の電極帯と接
続されるリード帯は金属箔によつて形成し、前記
電極帯とリード帯との間を、金属溶射層によつて
接続した面状発熱体。 It has an insulating substrate and a pattern in which a plurality of electrode bands extending from a pair of lead bands on the insulating substrate in a comb-like shape at appropriate intervals are arranged at appropriate intervals so that the electrode bands of different polarities are adjacent to each other. It comprises a conductive path and a planar heat-generating layer in which a heat-generating paint is applied over the entire area of the group of electrode bands to create a heat-generating block between each electrode band, and the electrode strips in contact with the planar heat-generating layer are coated with a conductive paint. The sheet heating element is formed by forming a plurality of electrode bands, a lead band connected to a plurality of electrode bands is formed of metal foil, and the electrode band and the lead band are connected by a metal sprayed layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1978012460U JPS6142291Y2 (en) | 1978-02-02 | 1978-02-02 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1978012460U JPS6142291Y2 (en) | 1978-02-02 | 1978-02-02 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS54115648U JPS54115648U (en) | 1979-08-14 |
| JPS6142291Y2 true JPS6142291Y2 (en) | 1986-12-01 |
Family
ID=28828771
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1978012460U Expired JPS6142291Y2 (en) | 1978-02-02 | 1978-02-02 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6142291Y2 (en) |
-
1978
- 1978-02-02 JP JP1978012460U patent/JPS6142291Y2/ja not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS54115648U (en) | 1979-08-14 |
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