JPS64715Y2 - - Google Patents
Info
- Publication number
- JPS64715Y2 JPS64715Y2 JP17964082U JP17964082U JPS64715Y2 JP S64715 Y2 JPS64715 Y2 JP S64715Y2 JP 17964082 U JP17964082 U JP 17964082U JP 17964082 U JP17964082 U JP 17964082U JP S64715 Y2 JPS64715 Y2 JP S64715Y2
- Authority
- JP
- Japan
- Prior art keywords
- heat
- electrode terminal
- temperature coefficient
- resistant insulating
- positive temperature
- 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
- 230000017525 heat dissipation Effects 0.000 claims description 3
- 238000010438 heat treatment Methods 0.000 claims description 3
- 230000000994 depressogenic effect Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 2
- 238000005452 bending Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 230000004927 fusion Effects 0.000 description 2
- 239000011810 insulating material Substances 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000020169 heat generation Effects 0.000 description 1
- 239000000077 insect repellent Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
Landscapes
- Resistance Heating (AREA)
Description
【考案の詳細な説明】
産業上の利用分野
本考案は、正特性サーミスタを発熱源とし、電
子蚊取器等に使用される発熱装置に関する。[Detailed Description of the Invention] Industrial Application Field The present invention relates to a heat generating device that uses a positive temperature coefficient thermistor as a heat generating source and is used in electronic mosquito repellents and the like.
従来技術
従来のこの種の発熱装置は、例えば第１図、第
２図に示すように、アルミナ等の耐熱絶縁材料で
構成されたケース１の凹溝２における底部に弾性
電極端子３を配置し、この電極端子板３の上に、
厚さ方向の両面に電極を被着形成した正特性サー
ミスタ４、平板状電極端子板５及び絶縁板６を順
次重ねてゆき、この絶縁板６の上に重ねられた放
熱板７を、電極端子板３の弾発力に抗しつつ、ケ
ース１の方向に押圧し、放熱板７に設けた取付腕
７１〜７４をケース１の外壁に沿つて折曲げるこ
とにより、全体を弾力的に支持固定した構造とな
つている。電極端子板３及び５は正特性サーミス
タ４の厚さ方向の両面に被着形成された電極にそ
れぞれ弾力的に圧接する。Prior Art As shown in FIGS. 1 and 2, a conventional heat generating device of this type has an elastic electrode terminal 3 disposed at the bottom of a groove 2 of a case 1 made of a heat-resistant insulating material such as alumina. , on this electrode terminal plate 3,
The positive temperature coefficient thermistor 4, which has electrodes adhered to both sides in the thickness direction, the flat electrode terminal plate 5, and the insulating plate 6 are stacked one after another, and the heat dissipation plate 7 stacked on top of the insulating plate 6 is used as the electrode terminal. By pressing in the direction of the case 1 while resisting the elastic force of the plate 3 and bending the mounting arms 71 to 74 provided on the heat sink 7 along the outer wall of the case 1, the whole is elastically supported and fixed. It has a similar structure. The electrode terminal plates 3 and 5 are elastically pressed against electrodes formed on both sides of the PTC thermistor 4 in the thickness direction, respectively.
前記電極端子板３及び５は、正特性サーミスタ
４の両端面に形成された電極に対接する電極対接
部分３１，５１に、給電部となる引出端子部３
２，５２を設けた構造となつていて、該引出端子
部３２，５２の基部に設けた屈曲部３３，５３
を、ケース１に設けた凹部１０１，１０２に嵌合
させて、外部に導出してある。 The electrode terminal plates 3 and 5 have lead-out terminal portions 3 that serve as power feeding portions at electrode contact portions 31 and 51 that are in contact with electrodes formed on both end surfaces of the PTC thermistor 4.
2, 52, and bent portions 33, 53 provided at the bases of the lead-out terminal portions 32, 52.
are fitted into recesses 101 and 102 provided in the case 1 and led out to the outside.
上記構造の発熱装置は、正特性サーミスタ４が
正常であれば、第３図に示すように、電圧印加直
後に突入電流Ipが流れた後、自己発熱により時間
経過と共に抵抗値が急撃に増大して電流が減衰
し、熱平衡時には極めて低い電流値Ioとなる。と
ころが、当該発熱装置の置かれた外部条件等の悪
影響を受けて正特性サーミスタ４が劣化した場
合、本来、低電流となるべき熱平衡時に曲線Ａの
ように再び上昇して過電流が流れ、正特性サーミ
スタ４の破損、異常発熱等を生じてしまうことが
ある。このような問題を解決する手段として、従
来は第４図にも拡大して示すように、電極端子板
３（または５）の引出端子部３２の屈曲部３３を
狭幅にして、過電流溶断部イを形成し、過電流が
流れた場合に該過電流溶断部イを溶断させてヒユ
ーズ作用を行なわせることにより、正特性サーミ
スタ４の保護を図つていた。 In the heat generating device having the above structure, if the positive temperature coefficient thermistor 4 is normal, as shown in Fig. 3, after the rush current Ip flows immediately after voltage application, the resistance value rapidly increases over time due to self-heating. The current attenuates and becomes an extremely low current value Io at thermal equilibrium. However, if the positive temperature coefficient thermistor 4 deteriorates due to the adverse effects of the external conditions of the heat generating device, the current will rise again as shown in curve A at the time of thermal equilibrium, when the current should normally be low, and an overcurrent will flow. This may cause damage to the characteristic thermistor 4, abnormal heat generation, etc. Conventionally, as a means to solve such problems, as shown in an enlarged view in FIG. The positive temperature coefficient thermistor 4 is protected by forming a section A and blowing out the overcurrent fusing section A when an overcurrent flows to perform a fuse action.
従来技術の欠点
しかしながら、引出端子部３２の屈曲部３３を
狭幅にして、過電流溶断部イを形成する構造で
は、引出端子部３２の強度が過電流溶断部イの部
分で著しく低下してしまうため、引出端子部３２
が簡単に破損してしまう。特に引出端子部３２は
外部回路との接続部分となるものであつて外力を
受け易いため、この欠点は信頼性保持の面から極
めて重大な欠陥となる。屈曲部３３の幅を大きく
すれば機械的強度は増大するが、そうすると過電
流保護機能が低下してしまう。しかも屈曲部３３
は、寸法的に短く、また上述のように機械的強度
の面からの制限もあることから、過電流溶断部イ
の設計の自由度が低く、保護すべき過電流値の設
計幅が狭くなる欠点もあつた。Disadvantages of the Prior Art However, in the structure in which the bent portion 33 of the outgoing terminal portion 32 is narrowed to form the overcurrent fusing portion A, the strength of the outgoing terminal portion 32 is significantly reduced at the overcurrent fusing portion A. For storage, pull out terminal section 32
is easily damaged. In particular, since the lead-out terminal portion 32 is a connection portion with an external circuit and is easily subjected to external force, this defect becomes an extremely serious defect from the viewpoint of maintaining reliability. If the width of the bent portion 33 is increased, the mechanical strength will be increased, but this will reduce the overcurrent protection function. Moreover, the bent portion 33
Because it is short in size and has limitations in terms of mechanical strength as mentioned above, there is less freedom in designing the overcurrent fusing part A, and the design range of the overcurrent value to be protected becomes narrower. There were also drawbacks.
本考案の目的
本考案は上述する従来の欠点を除去し、引出端
子部における実質的な機械的強度を低下させるこ
となく、一定の箇所において、一定の小さい電流
で確実にかつ素早く溶断できるようにした高信頼
度かつ高性能のヒユーズ機能を持つ発熱装置を提
供することを目的とする。Purpose of the present invention The present invention eliminates the above-mentioned drawbacks of the conventional technology, and makes it possible to reliably and quickly fuse a certain point with a small, constant current without reducing the substantial mechanical strength of the lead-out terminal. The purpose of the present invention is to provide a heat generating device with high reliability and high performance fuse function.
本考案の構成
上記目的を達成するため、本考案は、両面に電
極を設けた正特性サーミスタと、該正特性サーミ
スタの前記電極に対接しかつ引出端子部を有する
一対の電極端子板と、前記電極端子板の少なくと
も一方に電気絶縁板を介して重ねられた放熱板
と、前記正特性サーミスタ及び前記電極端子板を
収納する凹部を有する耐熱絶縁ケースとを備え、
前記電極端子板の少なくとも一つに過電流溶断部
を設けた発熱装置において、前記過電流溶断部
は、前記耐熱絶縁ケースの底面側に配置される電
極端子板の、前記耐熱絶縁ケースの前記凹部内に
収納される部分に、前記正特性サーミスタに対接
しない狭幅部分として形成し、該狭幅部分と対向
する前記耐熱絶縁ケースの底面に陥没部を設けた
ことを特徴とする。Structure of the Present Invention In order to achieve the above object, the present invention includes a positive temperature coefficient thermistor having electrodes on both sides, a pair of electrode terminal plates that are in contact with the electrodes of the positive coefficient thermistor and have lead-out terminal portions, and comprising a heat dissipation plate stacked on at least one of the electrode terminal plates via an electrical insulating plate, and a heat-resistant insulating case having a recess for accommodating the positive temperature coefficient thermistor and the electrode terminal plate,
In the heat generating device in which at least one of the electrode terminal plates is provided with an overcurrent fusing part, the overcurrent fusing part is located in the recess of the heat resistant insulating case of the electrode terminal plate disposed on the bottom side of the heat resistant insulating case. The heat-resistant insulating case is characterized in that a narrow portion is formed in a portion housed in the heat-resistant insulating case that does not come into contact with the PTC thermistor, and a recessed portion is provided on the bottom surface of the heat-resistant insulating case that faces the narrow portion.
実施例
第５図は本考案に係る発熱装置の分解図、第６
は同じく正面部分断面図、第７図は同じく要部の
平面図である。図において、第１図、第２図及び
第４図と同一の参照符号は同一性ある構成部分を
示している。この実施例では、電極端子板３及び
５の内、ケース１の底部に配置される電極端子板
３をスプリング板材によつて構成し、この電極端
子板３に過電流溶断部イを設けた構造のものを示
している。過電流溶断部イは、従来は引出端子部
３２の屈曲部３３に設けてあつたが、本考案にお
いては、ケース１の凹部２内に収納される部分
に、前記正特性サーミスタ４に対接しない狭幅部
分として形成する。この実施例では、正特性サー
ミスタ４の電極に対接する電極対接部分３１から
引出端子部３２に至る凹部２内の経路の途中に、
電極対接部分３１の側方を間隔Ｇを隔てて迂回す
る狭幅部分３４を連設し、該狭幅部分３４を過電
流溶断部イとしてある。Embodiment FIG. 5 is an exploded view of the heat generating device according to the present invention, and FIG.
7 is a front partial sectional view, and FIG. 7 is a plan view of the main parts. In the figures, the same reference numerals as in FIGS. 1, 2, and 4 indicate the same components. In this embodiment, among the electrode terminal plates 3 and 5, the electrode terminal plate 3 disposed at the bottom of the case 1 is made of a spring plate material, and the electrode terminal plate 3 has a structure in which an overcurrent fusing part A is provided. It shows things. Conventionally, the overcurrent fusing part A was provided at the bent part 33 of the lead-out terminal part 32, but in the present invention, it is provided in a part accommodated in the recess 2 of the case 1, facing the positive temperature coefficient thermistor 4. It is formed as a narrow part that does not overlap. In this embodiment, in the middle of the path within the recess 2 from the electrode contacting portion 31 that is in contact with the electrode of the PTC thermistor 4 to the lead-out terminal portion 32,
A narrow portion 34 is provided in a row around the side of the electrode contacting portion 31 at a distance G, and the narrow portion 34 is used as an overcurrent fusing portion A.
上述のように、過電流溶断部イを、ケース１の
凹部２内に収納される部分に、正特性サーミスタ
４に対接しない狭幅部分３４として形成する構造
であると、引出端子部の屈曲部に設ける従来例と
異なつて、引出端子部３２に外部回路を接続した
場合でも過電流溶断部イを構成する狭幅部分３４
に外力が加わることがない。このため、過電流溶
断部イの破損を防止することができる。しかも、
前記狭幅部分３４は、最大、ケース１の凹部２の
内径と略等しい長さまで形成することができる。
このため、保護しようとする電流値に合せて狭幅
部３４の長さを選択することが可能になり、過電
流保護の設計の自由度が従来より著しく高くな
る。 As described above, if the structure is such that the overcurrent fusing part A is formed as the narrow part 34 that does not come into contact with the PTC thermistor 4 in the part housed in the recess 2 of the case 1, the bending of the lead-out terminal part Unlike the conventional example provided in the section, even when an external circuit is connected to the pull-out terminal section 32, the narrow section 34 that constitutes the overcurrent fusing section A is
No external force is applied to the Therefore, damage to the overcurrent fusion section A can be prevented. Moreover,
The narrow portion 34 can be formed to have a maximum length approximately equal to the inner diameter of the recess 2 of the case 1.
Therefore, the length of the narrow portion 34 can be selected in accordance with the current value to be protected, and the degree of freedom in overcurrent protection design is significantly higher than in the past.
本考案のもう一つの特徴は、狭幅部３４と対向
するケース１の凹部底面に陥没部１０３を形成し
たことである。この実施例では、第８図にも拡大
して示すように、該陥没部１０３は狭幅部３４の
略中間部に矩形状に形成してある。 Another feature of the present invention is that a recessed portion 103 is formed on the bottom surface of the recessed portion of the case 1 facing the narrow portion 34. In this embodiment, as shown in an enlarged view in FIG. 8, the depressed portion 103 is formed in a rectangular shape approximately in the middle of the narrow width portion 34.
この種の発熱装置においては、ケース１がアル
ミナ等の比較的熱伝導性の良好な耐熱絶縁材料で
構成されていることから、狭幅部３４を凹部底面
に密着させた場合、ケース１の底面に伝導して放
熱される熱量が多くなり、その分だけ狭幅部３４
の温度上昇が遅れ、過電流溶断作用に時間遅れを
生じる。また、溶断箇所及び溶断電流にバラツキ
を生じ、動作が不安定になるし、大きい溶断電流
が必要になる。 In this type of heat generating device, since the case 1 is made of a heat-resistant insulating material with relatively good thermal conductivity such as alumina, when the narrow part 34 is brought into close contact with the bottom of the recess, the bottom of the case 1 The amount of heat conducted and radiated increases, and the narrow portion 34
temperature rise is delayed, causing a time delay in overcurrent fusing action. Further, variations occur in the fusing location and the fusing current, making the operation unstable and requiring a large fusing current.
これに対して、本考案の如く、狭幅部３４と対
向するケース１の凹部底面に陥没部１０３を形成
する構造を取ると、狭幅部３４が陥没部１０３の
長さの分だけケース１の底面から浮いた状態にな
り、狭幅部３４の全長の内、陥没部１０３と対向
する部分のケース底面への放熱量が減少し、この
対向部分の温度上昇が他の部分に比べて高くな
る。このため、溶断筒所が陥没部１０３と対向す
る部分に特定され、この箇所において、一定の小
さい電流で素早く溶断するようになり、全体とし
てヒユーズ機能が著しく向上する。しかも、狭幅
部１０３の長さ調整による溶断電流調整と併せ
て、陥没部１０３の寸法調整により、溶断電流を
自由に調整し得る利点もある。因に、同じ構造の
電極端子板３を使用した場合、前記陥没部１０３
を持たない場合は、１３Ａの電流で1.3秒の溶断
時間が必要であつたが、陥没部１０３を有する本
考案の実施例の場合は、１０Ａの電流で1.2秒で
溶断した。 On the other hand, if a structure is adopted in which the recessed part 103 is formed on the bottom surface of the recessed part of the case 1 facing the narrow width part 34 as in the present invention, the narrow width part 34 is extended to the case 1 by the length of the recessed part 103. of the entire length of the narrow part 34, the amount of heat radiated to the bottom of the case in the part facing the recessed part 103 decreases, and the temperature rise in this facing part is higher than in other parts. Become. For this reason, the fuse-cutting tube location is specified in the portion facing the depressed portion 103, and the fuse is quickly blown at this location with a constant small current, thereby significantly improving the fuse function as a whole. Moreover, in addition to adjusting the fusing current by adjusting the length of the narrow portion 103, there is also the advantage that the fusing current can be freely adjusted by adjusting the dimensions of the depressed portion 103. Incidentally, when using the electrode terminal plate 3 having the same structure, the recessed portion 103
In the case where the fuse does not have a current of 13A, it takes 1.3 seconds to fuse, but in the case of the embodiment of the present invention having the depressed portion 103, it fuses in 1.2 seconds with a current of 10A.
１０４はケース１の凹部２の底部に突設した突
起である。このような突起１０４があると、組立
上の位置ズレ等があつても、狭幅部分３４が正特
性サーミスタ４に接触することがないので、安定
した過電流保護作用が得られる。 Reference numeral 104 denotes a protrusion protruding from the bottom of the recess 2 of the case 1. With such a protrusion 104, even if there is a misalignment during assembly, the narrow portion 34 will not come into contact with the positive temperature coefficient thermistor 4, so that a stable overcurrent protection effect can be obtained.
本考案の効果
以上述べたように、本考案は、両面に電極を設
けた正特性サーミスタと、該正特性サーミスタの
前記電極に対接しかつ引出端子部を有する一対の
電極端子板と、前記電極端子板少なくとも一方に
電気絶縁板を介して重ねられた放熱板と、前記正
特性サーミスタ及び前記電極端子板を収納する凹
部を有する耐熱絶縁ケースとを備え、前記電極端
子板の少なくとも一つに過電流溶断部を設けた発
熱装置において、前記過電流溶断部は、前記耐熱
絶縁ケースの底面側に配置される電極端子板の、
前記耐熱絶縁ケースの前記凹部内に収納される部
分に、前記正特性サーミスタに対接しない狭幅部
分として形成し、該狭幅部分と対向する前記耐熱
絶縁ケースの底面に陥没部を設けたことを特徴と
するから、引出端子部における実質的な機械的強
度を低下させることなく、一定の箇所において、
一定の小さい電流で確実にかつ素早く溶断できる
ようにした高信頼度かつ高性能のヒユーズ機能を
持つ発熱装置を提供することができる。Effects of the present invention As described above, the present invention provides a positive temperature coefficient thermistor with electrodes provided on both sides, a pair of electrode terminal plates that are in contact with the electrodes of the positive coefficient thermistor and have lead-out terminal portions, and a heat sink overlaid on at least one of the terminal plates with an electrically insulating plate interposed therebetween; and a heat-resistant insulating case having a recess for accommodating the positive temperature coefficient thermistor and the electrode terminal plate; In the heat generating device provided with a current fusing part, the overcurrent fusing part is formed of an electrode terminal plate disposed on the bottom side of the heat-resistant insulating case.
A portion of the heat-resistant insulating case that is accommodated in the recess is formed as a narrow portion that does not come into contact with the PTC thermistor, and a recessed portion is provided on the bottom surface of the heat-resistant insulating case that faces the narrow portion. Because it is characterized by
It is possible to provide a heat generating device having a highly reliable and high performance fuse function that can be reliably and quickly fused with a constant small current.
第１図は従来の発熱装置の分解図、第２図は同
じくその正面断面図、第３図は正特性サーミスタ
の電流時間特性図、第４図は従来の発熱装置にお
ける電極端子板の拡大斜視図、第５図は本考案に
係る発熱装置の分解図、第６図は同じく正面部分
断面図、第７図は同じく要部の平面図、第８図は
本考案に係る発熱装置の要部における斜視図であ
る。
１……ケース、２……凹部、３……電極端子
板、５……電極端子板、４……正特性サーミス
タ、６……絶縁板、７……放熱板、３４……狭幅
部分、イ……過電流溶断部、１０３……陥没部。
Fig. 1 is an exploded view of a conventional heat generating device, Fig. 2 is a front sectional view thereof, Fig. 3 is a current-time characteristic diagram of a positive temperature coefficient thermistor, and Fig. 4 is an enlarged perspective view of an electrode terminal plate in a conventional heat generating device. 5 is an exploded view of the heat generating device according to the present invention, FIG. 6 is a partial front sectional view, FIG. 7 is a plan view of the main parts, and FIG. 8 is a main part of the heat generating device according to the present invention. FIG. DESCRIPTION OF SYMBOLS 1... Case, 2... Recess, 3... Electrode terminal plate, 5... Electrode terminal plate, 4... Positive temperature coefficient thermistor, 6... Insulating plate, 7... Heat sink, 34... Narrow width part, A...Overcurrent fusion section, 103...Sinking section.
Claims (1)
正特性サーミスタの前記電極に対接しかつ引出
端子部を有する一対の電極端子板と、前記電極
端子板の少なくとも一方に電気絶縁板を介して
重ねられた放熱板と、前記正特性サーミスタ及
び前記電極端子板を収納する凹部を有する耐熱
絶縁ケースとを備え、前記電極端子板の少なく
とも一つに過電流溶断部を設けた発熱装置にお
いて、前記過電流溶断部は、前記耐熱絶縁ケー
スの底面側に配置される電極端子板の、前記耐
熱絶縁ケースの前記凹部内に収納される部分
に、前記正特性サーミスタに対接しない狭幅部
分として形成し、該狭幅部分と対向する前記耐
熱絶縁ケースの底面に陥没部を設けたことを特
徴とする発熱装置。 (2) 前記耐熱絶縁ケースは、前記凹部内に前記狭
幅部分が前記正特性サーミスタに接触するのを
阻止する突起を有することを特徴とする実用新
案登録請求の範囲第１項に記載の発熱装置。 (3) 前記過電流溶断部を有する前記電極端子板
は、スプリング電極端子板で構成したことを特
徴とする実用新案登録請求の範囲第１項または
第２項に記載の発熱装置。[Claims for Utility Model Registration] (1) A positive temperature coefficient thermistor having electrodes on both sides, a pair of electrode terminal plates facing the electrodes of the positive temperature coefficient thermistor and having a lead-out terminal portion, A heat-resistant insulating case having a heat dissipation plate stacked on at least one side with an electrically insulating plate interposed therebetween, and a recess for accommodating the positive temperature coefficient thermistor and the electrode terminal plate; In the heating device, the overcurrent fusing part is arranged such that the positive temperature coefficient thermistor is disposed in a portion of the electrode terminal plate disposed on the bottom side of the heat-resistant insulating case that is housed in the recess of the heat-resistant insulating case. A heat generating device, characterized in that the heat resistant insulating case is formed as a narrow portion that does not face the narrow portion, and a recessed portion is provided on the bottom surface of the heat-resistant insulating case that faces the narrow portion. (2) The heat generating device according to claim 1, wherein the heat-resistant insulating case has a protrusion in the recess that prevents the narrow portion from coming into contact with the positive temperature coefficient thermistor. Device. (3) The heating device according to claim 1 or 2, wherein the electrode terminal plate having the overcurrent fusing portion is constituted by a spring electrode terminal plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17964082U JPS5982987U (en) | 1982-11-26 | 1982-11-26 | heat generating device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17964082U JPS5982987U (en) | 1982-11-26 | 1982-11-26 | heat generating device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5982987U JPS5982987U (en) | 1984-06-05 |
| JPS64715Y2 true JPS64715Y2 (en) | 1989-01-09 |
Family
ID=30389716
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP17964082U Granted JPS5982987U (en) | 1982-11-26 | 1982-11-26 | heat generating device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5982987U (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0514470Y2 (en) * | 1986-02-10 | 1993-04-16 | ||
| JPH0629911Y2 (en) * | 1986-08-28 | 1994-08-10 | ティーディーケイ株式会社 | Heating device for electric mosquito trap |
-
1982
- 1982-11-26 JP JP17964082U patent/JPS5982987U/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5982987U (en) | 1984-06-05 |
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