JPH0793459B2 - Thermoelectric device - Google Patents
Thermoelectric deviceInfo
- Publication number
- JPH0793459B2 JPH0793459B2 JP62047406A JP4740687A JPH0793459B2 JP H0793459 B2 JPH0793459 B2 JP H0793459B2 JP 62047406 A JP62047406 A JP 62047406A JP 4740687 A JP4740687 A JP 4740687A JP H0793459 B2 JPH0793459 B2 JP H0793459B2
- Authority
- JP
- Japan
- Prior art keywords
- temperature side
- low temperature
- thermoelectric
- type semiconductor
- fixed
- 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 - Fee Related
Links
Classifications
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10N—ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10N10/00—Thermoelectric devices comprising a junction of dissimilar materials, i.e. devices exhibiting Seebeck or Peltier effects
Landscapes
- Measuring Temperature Or Quantity Of Heat (AREA)
- Cooling Or The Like Of Semiconductors Or Solid State Devices (AREA)
Description
【発明の詳細な説明】 〔産業上の利用分野〕 本発明は、熱電装置に係り、特にその実装構造に関す
る。The present invention relates to a thermoelectric device, and more particularly to a mounting structure thereof.
例えば、鉄硅化物（FeSi2）に夫々マンガン（Mn）また
はコバルト（Co）等の適性不純物を添加したＰ型半導体
とＮ型半導体とを一端側で接合して形成したＵ字型の熱
電発電素子は、温度差を与えるだけで簡単に起電力を生
じ、優れた耐熱性耐酸化性を呈し、かつ安定な特性を維
持できることから、熱エネルギーの有効利用化への要求
が高まっている今日、実用化が期待されているデバイス
である。For example, a U-shaped thermoelectric generator formed by joining an N-type semiconductor and a P-type semiconductor in which appropriate impurities such as manganese (Mn) or cobalt (Co) are added to iron silicide (FeSi 2 ) respectively. The element can easily generate an electromotive force only by giving a temperature difference, exhibits excellent heat resistance and oxidation resistance, and can maintain stable characteristics.Therefore, the demand for effective utilization of thermal energy is increasing today. It is a device that is expected to be put to practical use.
このような熱電発電素子では起電力は、高温側であるPN
接合部と、低温側である陽極側および陰極側端部との温
度差Δｔによって決まる。従って効率良く電気エネルギ
ーを獲得するためには、低温側である陽極側および陰極
側の開放端（接合側の反対側）の放熱性を高めることが
重要な課題となる。In such a thermoelectric generator, the electromotive force is PN on the high temperature side.
It is determined by the temperature difference Δt between the junction and the ends on the low temperature side of the anode and the side of the cathode. Therefore, in order to efficiently obtain electric energy, it is an important issue to enhance the heat radiation property at the open ends (opposite to the joining side) of the anode side and the cathode side, which are the low temperature side.
そこで本発明者らは熱電発電素子の低温側端部を導電性
被膜で被覆し、夫々一端側に前記低温側端部が当接する
とともに他端側が外部接続端子となるように形成された
２つの配線パターンを有する放熱板上に、前記熱電発電
素子の該低温側端部を載置した状態で放熱ケースの上板
と底板とによってこれを挟み圧着固定した後、全体を加
熱し、前記導電性被膜と前記配線パターンとを融着せし
めるようにした組立て方法を提案している。（特願60−
241187） この方法によれば放熱ケースの上板と底板とによって熱
電発電素子の低温側端部をパターン上に固着せしめた放
熱板が常に押圧された状態で挟み込まれており、素子と
外部接続端子（電極配線パターン）との電気的接触性お
よび素子と放熱ケースとの熱接触性が良好となる。Therefore, the present inventors have covered the low temperature side end portion of the thermoelectric power generating element with a conductive film, and have two ends formed so that the low temperature side end portion abuts on one end side and the other end side serves as an external connection terminal. On the heat dissipation plate having a wiring pattern, the low temperature side end of the thermoelectric generator is placed, and sandwiched between the upper plate and the bottom plate of the heat dissipation case, and then pressure-bonded and fixed, and then the whole is heated to the conductivity. It proposes an assembling method in which the coating film and the wiring pattern are fused. (Japanese Patent Application 60-
According to this method, the heat radiating plate in which the low temperature side end of the thermoelectric generator is fixed to the pattern by the upper plate and the bottom plate of the heat radiating case is always pressed and sandwiched between the element and the external connection terminal. The electrical contact with the (electrode wiring pattern) and the thermal contact between the element and the heat dissipation case are improved.
しかしながら、熱電発電素子は激しい温度変化を伴うた
め、熱応力によって素子にクラックが発生したり、素子
が折れたりすることがある。However, since the thermoelectric power generation element is accompanied by a drastic temperature change, the element may be cracked or broken due to thermal stress.
例えば、第５図に示すようなＵ字型の熱電発電素子の低
温側端子LEの一方を固定し、他方をフリーにした状態で
高温側端部HEがガスバーナの炎等によって加熱される場
合を考えてみよう。For example, in the case where one of the low temperature side terminals LE of the U-shaped thermoelectric generator as shown in FIG. 5 is fixed and the other side is free, the high temperature side end HE is heated by the flame of the gas burner or the like. Let's think about it.
まず、点火（SP）されて温度上昇が始まると、最初Ｕ字
形の外側部分が急速に温度上昇し、膨脹することによ
り、第６図に示す如くフリーの低温側端子LE1は内側
（−方向）に移動せしめられる。（第６図中、横軸には
時間をとった。） そして、高温側端部HE全体が徐々に加熱せしめられてい
くと、低温側端子LEは徐々に開き、フリー側は外側（＋
方向）に移動せしめられる。First, when ignition (SP) starts to increase the temperature, the temperature of the outer portion of the U-shape increases and expands at first, so that the free low temperature side terminal LE1 is inward (-direction) as shown in FIG. Be moved to. (In FIG. 6, time is plotted on the horizontal axis.) Then, when the entire high temperature side end HE is gradually heated, the low temperature side terminal LE gradually opens and the free side is outside (+
Direction).
また、ガスバーナが急に消されると（点FP）、高温側端
部の外側がまず急冷せしめられることにより、フリーの
低温側端子LE1は一時的に外側に動き、更に全体が冷却
されてくると、徐々に元の位置に戻る。Also, when the gas burner is suddenly extinguished (point FP), the outside of the high temperature side end is first cooled rapidly, so that the free low temperature side terminal LE1 temporarily moves to the outside and the whole is further cooled. , Gradually return to the original position.
これに対し、前述の如く、低温部側端子の両方を固定し
てしまうと、素子には、温度変化による熱応力が加わる
ため、素子が破壊され易くなるものと考えられる。On the other hand, as described above, if both the low temperature side terminals are fixed, the element is likely to be damaged because thermal stress due to temperature change is applied to the element.
また、使用箇所によっては高温側端部を固定しなければ
ならない場合がある。これは、加熱源が固体であり、接
触加熱で使用しなければならない場合等であり、例えば
第７図に示す如く、加熱棒100に設けらた凹部101に熱電
発電素子102の高温側端部を係合固定せしめるような場
合である。このような場合、熱電発電素子の低温側端子
を２端子共固定すると横方向Ａのみならず素子の長手方
向Ｂにかかる熱応力も吸収し得ず、クラックや破壊の原
因となることが多い。Also, depending on the place of use, it may be necessary to fix the high temperature side end. This is a case where the heating source is solid and must be used for contact heating. For example, as shown in FIG. 7, the high temperature side end portion of the thermoelectric generator element 102 is formed in the recess 101 provided in the heating rod 100. This is a case where is engaged and fixed. In such a case, if the two terminals on the low temperature side of the thermoelectric generator are fixed together, the thermal stress applied not only in the lateral direction A but also in the longitudinal direction B of the element cannot be absorbed, which often causes cracks or breakage.
また、素子自体は破壊に至らなくても放熱板に応力が加
わり、クラックが発生したり破壊が生じたりすることが
あった。Further, even if the element itself is not destroyed, stress may be applied to the heat sink, resulting in cracks or destruction.
本発明は、前記実情に鑑みてなされたもので、信頼性が
高く、長寿命の熱電装置を提供することを目的とする。The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a highly reliable thermoelectric device having a long life.
そこで本発明では、Ｐ型半導体とＮ型半導体とをその一
端側でPN接合を形成するように接合せしめて熱電素子の
低温側端子を夫々電極板を介して外部リードに接続する
に際し、この電極板のうち少なくとも一方に応力吸収用
の湾曲部を配設するようにしている。Therefore, in the present invention, when the P-type semiconductor and the N-type semiconductor are joined so as to form a PN junction at one end side thereof and the low temperature side terminals of the thermoelectric element are connected to the external leads via the electrode plates respectively, A curved portion for absorbing stress is arranged on at least one of the plates.
かかる構成によれば、発生した熱応力は、低温側端子の
少なくとも一方に接続されたフレキシブルな電極板の湾
曲部によって吸収され、素子にクラックや破壊を生ぜし
めたりすることはない。According to this structure, the generated thermal stress is absorbed by the curved portion of the flexible electrode plate connected to at least one of the low temperature side terminals, and the element is not cracked or broken.
以下、本発明の実施例について図面を参照しつつ詳細に
説明する。Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
第１図は、本発明実施例の熱電発電装置を示す図であ
る。FIG. 1 is a diagram showing a thermoelectric generator according to an embodiment of the present invention.
この熱電発電装置は、加熱棒８の温度検出に用いられる
もので、Ｕ字型熱電発電素子１の低温側端子1a,1bと外
部リード線2,3との接続に、放熱板４上に載置され一端
のみが固定された板バネからなる弾性コネクタ5,6を用
いたことを特徴とするものである。This thermoelectric generator is used for detecting the temperature of the heating rod 8, and is mounted on the heat dissipation plate 4 for connecting the low temperature side terminals 1a, 1b of the U-shaped thermoelectric generator 1 and the external lead wires 2, 3. It is characterized in that elastic connectors (5, 6) made of leaf springs that are placed and fixed only at one end are used.
この弾性コネクタ5,6はSUS430と指称されているステン
レス薄板からなり該低温側端子1a,1bをフレキシブルに
支持するもので、夫々前記低温側端子1a,1bを３方から
固定支持するコの字状の端子支持部5a,6bと、放熱板上
に垂直に載置され、湾曲部を有する本体5b,6bと、放熱
板４上に固定すると共に外部リード線2,3との接続を達
成するための接続部5c,6cとから構成されており、該接
続部5c,6cに夫々設けられた２つのビス穴ｈに挿通され
るビスｂを介して放熱板４上に支持固定せしめられてい
る。７は絶縁ワッシャである。The elastic connectors 5 and 6 are made of a stainless steel thin plate called SUS430 and flexibly support the low temperature side terminals 1a and 1b. The low temperature side terminals 1a and 1b are fixedly supported from three sides, respectively. -Shaped terminal support portions 5a and 6b, main bodies 5b and 6b vertically mounted on the heat sink and having a curved portion, and fixed on the heat sink 4 and at the same time connecting to external lead wires 2 and 3 are achieved. And connecting portions 5c and 6c for connecting the connecting portions 5c and 6c. The connecting portions 5c and 6c are supported and fixed on the heat radiating plate 4 through the screws b inserted into the two screw holes h provided in the connecting portions 5c and 6c, respectively. . 7 is an insulating washer.
また、放熱板４は、金属板上に１部電気絶縁性皮膜を形
成してなるもので、該ビス穴ｈに対応する位置にビス穴
が設けられている。Further, the heat dissipation plate 4 is formed by forming a part of an electrically insulating film on a metal plate, and a screw hole is provided at a position corresponding to the screw hole h.
また、熱電発電素子１は、鉄硅化物（FeSi2）にマンガ
ン（Mn）をドーピングしたＰ型半導体と、鉄硅化物にコ
バルト（Co）をドーピングしたＮ型半導体とを直接粉末
成型接合して、一端側がPN接合を形成し高温側端部を構
成すると共に他端側がＰ型およびＮ型の２つの低温側端
子を構成するようにしたＵ字型の素子である。Further, the thermoelectric power generation element 1 is formed by directly powder-molding and joining a P-type semiconductor in which manganese (Mn) is doped in iron silicate (FeSi 2 ) and an N-type semiconductor in which cobalt (Co) is doped in iron silicate. A U-shaped element in which one end side forms a PN junction to form a high temperature side end portion and the other end side forms two low temperature side terminals of P type and N type.
そして、この熱電発電素子の接合側端部すなわち高温側
端部1cは、加熱棒８に設けられた凹部９内に挿入され、
第２図に断面図を示す如く、バネ板10を介してビス11に
よって熱接触性良く固定されている。The joining side end portion of this thermoelectric power generating element, that is, the high temperature side end portion 1c is inserted into the recess 9 provided in the heating rod 8,
As shown in the cross-sectional view in FIG. 2, the spring plate 10 is fixed by screws 11 with good thermal contact.
更に、低温側端子と弾性コネクタの支持部との間は、亜
鉛系の半田合金層Ｓを介して固着される。Further, the low temperature side terminal and the supporting portion of the elastic connector are fixed to each other via a zinc-based solder alloy layer S.
この亜鉛系の半田合金層は、融点が約400℃以上となる
ように構成された高融点半田であり、接合時にホウ酸系
又はフッ酸系のフラックスを用いるようにすれば、低温
側端子1a,1bの表面に形成されている酸化膜上に直接半
田接合するようにしても、良好な電気的および機械的接
続が達成される。This zinc-based solder alloy layer is a high-melting-point solder having a melting point of about 400 ° C. or higher, and if a boric acid-based or hydrofluoric acid-based flux is used during bonding, the low temperature side terminal 1a Good electrical and mechanical connection can be achieved even if soldering is directly performed on the oxide film formed on the surface of 1b.
製造に際しては、次のような方法がとられる。In manufacturing, the following method is adopted.
まず、熱電発電素子の低温側端子1a,1bを前記弾性コネ
クタ5,6の支持部5a,6a内に亜鉛系の半田合金層Ｓによっ
て固着する。First, the low temperature side terminals 1a and 1b of the thermoelectric power generating element are fixed to the supporting portions 5a and 6a of the elastic connectors 5 and 6 by the zinc-based solder alloy layer S.
そして、金属板上に例えば電気絶縁性樹脂をコーティン
グして放熱板４を形成し、この放熱板上に、放熱板のビ
ス穴ｈと前記弾性コネクタの接続部5c,6cのビス穴ｈが
符合するように、熱電発電素子の接続された弾性コネク
タを載置し、絶縁ワッシャ７を介してビスｂによって固
定すると共に、端部側のビス穴には外部リード線2,3を
も一緒にビス止めする。Then, a metal plate is coated with, for example, an electrically insulating resin to form a heat dissipation plate 4, and the screw holes h of the heat dissipation plate and the screw holes h of the connecting portions 5c and 6c of the elastic connector are aligned on this heat dissipation plate. As described above, the elastic connector to which the thermoelectric generator is connected is placed and fixed by the screw b through the insulating washer 7, and the external lead wires 2 and 3 are also screwed into the screw holes on the end side. Stop.
このようにして形成された熱電発電装置では熱電発電素
子の低温側端子が、弾性的に放熱板上で支持されてお
り、かつ、熱的には良好に接触せしめられているため、
縦横両方向A,Bの熱応力に対しても、クラックや破壊を
生じたりすることもなく、信頼性の高いものとなってい
る。In the thermoelectric generator formed in this way, the low temperature side terminal of the thermoelectric generator is elastically supported on the heat sink, and because it is in good thermal contact,
Even with respect to thermal stress in both the vertical and horizontal directions A and B, neither cracking nor destruction occurs, and the reliability is high.
すなわち、このように高温部側を加熱棒８で固定されて
いる場合にも、Ａ方向の応力をこの湾曲部が吸収するこ
とになり、クラックの発生は防止される。That is, even when the high temperature portion side is fixed by the heating rod 8 in this way, the curved portion absorbs the stress in the A direction, and the generation of cracks is prevented.
また、熱電発電素子の低温側端子の接合には亜鉛系の高
融点半田を用いているため、高温にも耐え得、十分な接
合強度を維持することができる。Further, since the zinc-based high melting point solder is used for joining the low temperature side terminals of the thermoelectric generator, it is possible to withstand high temperatures and maintain sufficient joining strength.
なお、上記実施例では、放熱板が弾性コネクタを支承す
るように、長い放熱板を用いているが、第３図に示す如
く、弾性コネクタの接続部5c,6cのみを支承する程度の
小さい放熱板４′を用いるようにしてもよい。In the above-mentioned embodiment, a long heat dissipation plate is used so that the heat dissipation plate supports the elastic connector, but as shown in FIG. 3, the heat dissipation is small enough to support only the connecting portions 5c and 6c of the elastic connector. The plate 4'may be used.
更に、実施例では、低温側端子を両方共、弾性コネクタ
を介して外部リード線に接続するようにしたが、第４図
に示す如く２つの端子のうち一方のみに弾性コネクタを
用いるようにし、他の一方には、コの字状に成型した金
具からなる固定型のコネクタ60を用いるようにしてもよ
い。また、この構造ではこれらのコネクタの表面積を大
きくすることより、放熱板を省くことも可能である。Further, in the embodiment, both the low temperature side terminals are connected to the external lead wire via the elastic connector, but as shown in FIG. 4, the elastic connector is used for only one of the two terminals, A fixed connector 60 made of a U-shaped metal fitting may be used for the other one. Further, in this structure, the heat sink can be omitted by increasing the surface area of these connectors.
加えて、実施例では、１つの熱電発電素子を用いた場合
について説明したが、同一放熱板上に、複数個の熱電発
電素子を配設した場合にも適用可能であることはいうま
でもない。この場合、外側に位置する熱電発電素子の外
側端子のみを放熱板上に固着し、隣接する素子の隣接端
子間は板バネ等のフレキシブル材料で接続するようにす
れば実装工程も簡単で熱応力に対する耐性も高められ
る。In addition, in the embodiment, the case where one thermoelectric power generating element is used has been described, but it goes without saying that the present invention is also applicable to a case where a plurality of thermoelectric power generating elements are arranged on the same heat dissipation plate. . In this case, if only the outer terminals of the thermoelectric generators located on the outside are fixed on the heat sink and the adjacent terminals of adjacent elements are connected with a flexible material such as a leaf spring, the mounting process is simple and the thermal stress is high. Resistance to is also increased.
更に、この熱電発電装置は、そのままで使用する他、低
温側を適当なケース等で覆うようにしてもよい。Further, this thermoelectric generator may be used as it is, or the low temperature side may be covered with a suitable case or the like.
以上説明してきたように、本発明の熱電装置によれば、
Ｕ字型の熱電素子の低温側端子を夫々素子支持用の電極
板を介して外部リードに接続するに際し、該電極板のう
ち少なくとも一方は、応力吸収用の湾曲部を具備してい
るため、熱電素子に発生した熱応力は、この電極板で吸
収され、素子にクラックや破壊を生じることなく、高い
信頼性を維持することが可能となる。As described above, according to the thermoelectric device of the present invention,
When connecting the low temperature side terminals of the U-shaped thermoelectric element to the external leads via the electrode plates for supporting the respective elements, at least one of the electrode plates is provided with the curved portion for absorbing stress, The thermal stress generated in the thermoelectric element is absorbed by this electrode plate, and it becomes possible to maintain high reliability without causing cracks or damage to the element.
第１図は、本発明実施例の熱電発電装置を示す図、第２
図は、その断面の一部を示す図、第３図および第４図
は、夫々、他の実施例の熱電発電装置を示す図、第５図
は、通常の熱電素子の説明図、第６図は、第５図の熱電
素子に温度変化を与えた場合の低温側端子の位置（動
き）を示す図、第７図は、従来の熱電発電装置の一例を
示す図である。 100……加熱棒、101……凹部、102……熱電発電素子、
１……熱電発電素子、1a,1b……低温側端子、1c……高
温側端部、2,3……外部リード線、4,4′……放熱板、5,
6……弾性コネクタ、5a,6a……支持部、5b,6b……本
体、5c,6c……接続部、７……ワッシャ、８……加熱
棒、Ｓ……半田合金層、60……コネクタ。FIG. 1 is a diagram showing a thermoelectric generator of an embodiment of the present invention, and FIG.
The drawing shows a part of its cross section, FIGS. 3 and 4 show thermoelectric generators of other examples, and FIG. 5 is an explanatory view of a normal thermoelectric element, and FIG. FIG. 7 is a diagram showing the position (movement) of the low temperature side terminal when a temperature change is applied to the thermoelectric element of FIG. 5, and FIG. 7 is a diagram showing an example of a conventional thermoelectric generator. 100 ... Heating rod, 101 ... Recess, 102 ... Thermoelectric power generation element,
1 ... Thermoelectric generator element, 1a, 1b ... Low temperature side terminal, 1c ... High temperature side end, 2, 3 ... External lead wire, 4, 4 '... Heat sink, 5,
6 ... elastic connector, 5a, 6a ... supporting part, 5b, 6b ... main body, 5c, 6c ... connecting part, 7 ... washer, 8 ... heating rod, S ... solder alloy layer, 60 ... connector.
Claims (2)
PN接合を形成するように接合せしめてなる熱電素子と、 これらＰ型半導体およびＮ型半導体の非接合側端部に相
当する２つの低温側端子に一端を接続され、他端を外部
リードに接続する電極板とを具備し、 前記外部リードとの接続部との距離を一定に保つべく、
前記電極板のうち少なくとも一方に前記低温側端子の伸
長方向に沿って、応力を吸収する応力吸収用の湾曲部を
配設したことを特徴とする熱電装置。1. A P-type semiconductor and an N-type semiconductor on one end side thereof.
A thermoelectric element that is joined so as to form a PN junction, and one end is connected to two low temperature side terminals corresponding to the non-junction side ends of these P-type semiconductor and N-type semiconductor, and the other end is connected to an external lead. In order to keep a constant distance from the connecting portion with the external lead,
A thermoelectric device characterized in that a stress absorbing curved portion for absorbing stress is disposed on at least one of the electrode plates along an extension direction of the low temperature side terminal.
上に固定されていることを特徴とする特許請求の範囲第
（１）項記載の熱電装置。2. The thermoelectric device according to claim 1, wherein at least an end portion of the electrode plate is fixed on the heat dissipation plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62047406A JPH0793459B2 (en) | 1987-03-02 | 1987-03-02 | Thermoelectric device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62047406A JPH0793459B2 (en) | 1987-03-02 | 1987-03-02 | Thermoelectric device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS63213980A JPS63213980A (en) | 1988-09-06 |
| JPH0793459B2 true JPH0793459B2 (en) | 1995-10-09 |
Family
ID=12774240
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62047406A Expired - Fee Related JPH0793459B2 (en) | 1987-03-02 | 1987-03-02 | Thermoelectric device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0793459B2 (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4832137B2 (en) * | 2006-03-29 | 2011-12-07 | 岡野電線株式会社 | Thermoelectric conversion module |
| US8796533B2 (en) | 2006-06-14 | 2014-08-05 | Universal Entertainment Corporation | Thermoelectric conversion module and connector for thermoelectric conversion elements |
| JP5336373B2 (en) * | 2007-07-20 | 2013-11-06 | 株式会社ユニバーサルエンターテインメント | Thermoelectric conversion module |
| AU2010229384A1 (en) * | 2009-03-26 | 2011-10-27 | Panasonic Corporation | Electrostatic atomizing apparatus and method for manufacturing same |
| JP2011152501A (en) * | 2010-01-26 | 2011-08-11 | Panasonic Electric Works Co Ltd | Electrostatic atomizer |
| JP5395704B2 (en) * | 2010-02-23 | 2014-01-22 | パナソニック株式会社 | Electrostatic atomizer, manufacturing method thereof, and Peltier unit |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS572679U (en) * | 1980-06-06 | 1982-01-08 | ||
| JPS61104567U (en) * | 1984-12-14 | 1986-07-03 | ||
| JPS6293701A (en) * | 1985-10-18 | 1987-04-30 | Nec Corp | Set opening controller |
-
1987
- 1987-03-02 JP JP62047406A patent/JPH0793459B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPS63213980A (en) | 1988-09-06 |
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