JPH0420358Y2 - - Google Patents
Info
- Publication number
- JPH0420358Y2 JPH0420358Y2 JP9284686U JP9284686U JPH0420358Y2 JP H0420358 Y2 JPH0420358 Y2 JP H0420358Y2 JP 9284686 U JP9284686 U JP 9284686U JP 9284686 U JP9284686 U JP 9284686U JP H0420358 Y2 JPH0420358 Y2 JP H0420358Y2
- Authority
- JP
- Japan
- Prior art keywords
- circuit board
- printed circuit
- main body
- electrical equipment
- sealed space
- 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
- 239000004065 semiconductor Substances 0.000 claims description 8
- 241000238631 Hexapoda Species 0.000 description 6
- 241000209094 Oryza Species 0.000 description 3
- 235000007164 Oryza sativa Nutrition 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- 230000002093 peripheral effect Effects 0.000 description 3
- 235000009566 rice Nutrition 0.000 description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 2
- 238000010411 cooking Methods 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000017525 heat dissipation Effects 0.000 description 2
- 241001674044 Blattodea Species 0.000 description 1
- 230000029142 excretion Effects 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 230000007257 malfunction Effects 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
Landscapes
- Cookers (AREA)
- Mounting Of Printed Circuit Boards And The Like (AREA)
Description
【考案の詳細な説明】
(イ) 産業上の利用分野
本考案は、本体の外底面に電気部品への通電を
制御する半導体素子を取り付けたプリント基板を
設けた電気機器に関する。[Detailed Description of the Invention] (a) Field of Industrial Application The present invention relates to an electrical device having a printed circuit board on the outer bottom surface of the main body, on which a semiconductor element for controlling energization of electrical components is attached.
(ロ) 従来の技術
従来におけるこの種の電気機器は、本体の外底
面にプリント基板を設けていたが、斯るものはこ
のプリント基板に取り付けた半導体素子の自己発
熱による温度上昇を防止するために放熱板を設け
たり、種々の隙間を形成していた。(b) Conventional technology Conventionally, this type of electrical equipment had a printed circuit board on the outer bottom of the main body, but this was done in order to prevent the temperature rise due to self-heating of the semiconductor elements attached to this printed circuit board. A heat dissipation plate was provided on the top, and various gaps were formed.
しかしなが、斯る構成のものは熱放散を重点的
に対策していたために、ゴキブリ等の虫の侵入を
許し、特に適当に温度が高く且つ平坦面で住みこ
こちの良いプリント基板のパターン面の上面が住
家となつていた。そして、これらの虫の排出物は
パターン面の銅面を酸化せしめ、その結果短絡し
て半導体素子の異常動作を起こさせるという事態
が生じるようになつた。 However, since such a configuration focuses on heat dissipation, it allows insects such as cockroaches to invade, especially on the patterned surface of the printed circuit board, which has a moderately high temperature and is flat and comfortable to live on. The top of the building was used as a residence. The excretions of these insects oxidize the copper surface of the patterned surface, resulting in short circuits and abnormal operation of semiconductor devices.
(ハ) 考案が解決しようとする問題点
そこで本考案は、プリント基板のパターン面へ
の虫の侵入を完全に防止しようとするものであ
る。(c) Problems to be solved by the invention Therefore, the present invention attempts to completely prevent insects from entering the patterned surface of a printed circuit board.
(ニ) 問題点を解決するための手段
本考案は電気機器本体の底蓋の外底面に、環状
の突堤を膨出形成し、この突堤にプリント基板の
周囲を密に固定して密閉空間を形成し、この密閉
空間内にプリント基板のパターン面を配置するよ
うにしたものである。(d) Means for solving the problem The present invention forms an annular bulge on the outer bottom surface of the bottom cover of the main body of the electrical equipment, and tightly fixes the printed circuit board to this bulge to create an airtight space. The patterned surface of the printed circuit board is placed within this sealed space.
(ホ) 作用
プリント基板のパターン面は密閉空間内に配置
されるため、このパターン面上に虫が侵入するこ
とがない。(E) Effect Since the patterned surface of the printed circuit board is placed in a closed space, insects cannot enter onto this patterned surface.
(ヘ) 実施例
１は電気炊飯器等の電気機器本体で、上面開口
部を取手２を有する蓋体３にて施蓋している。こ
の蓋体３には蓋ヒータ４と蒸気案内筒５を内設し
ている。前記本体１の内部には断熱材６を介して
外鍋７を収設している。この外鍋７の内底部には
加熱板８を配設するとともに上部周側面には保温
用ヒータ９を配設している。前記外鍋７内には内
鍋１０を着脱自在とし且つ内鍋１０の外底面に炊
飯の終了を検知する感熱体１１を圧接せしめてい
る。１２は前記加熱板８の内部に埋設されるシー
ズヒータの端末部である。１３は炊飯の進行状態
を表示するランプ１４等を有する表示パネルであ
る。前記本体１の底面には耐熱性でなる底蓋１５
を嵌合固定している。(f) Embodiment 1 is a main body of an electric appliance such as an electric rice cooker, and the top opening is covered with a lid body 3 having a handle 2. This lid body 3 has a lid heater 4 and a steam guide cylinder 5 installed therein. An outer pot 7 is housed inside the main body 1 via a heat insulating material 6. A heating plate 8 is disposed at the inner bottom of the outer pot 7, and a heat-retaining heater 9 is disposed at the upper peripheral side. An inner pot 10 is removably attached to the outer pot 7, and a heat sensitive element 11 is pressed against the outer bottom surface of the inner pot 10 to detect the end of rice cooking. Reference numeral 12 denotes an end portion of a sheathed heater buried inside the heating plate 8. Reference numeral 13 denotes a display panel having a lamp 14 and the like for displaying the progress status of rice cooking. A heat-resistant bottom cover 15 is provided on the bottom surface of the main body 1.
are mated and fixed.
前記底蓋１５の底面外周面に内部空間１６を有
するスカート部１７を環状に一体に成形し、且つ
適所に複数個の脚体１８も一体成形している。こ
のスカート部１７は脚体１８よりも少許短かく形
成しているため、本体１をテーブル等の載置面Ｔ
に載置したときに前記スカート部１７と載置面Ｔ
との間に少許の間隔S1を存するようになつてい
る。２０は前記シーズヒータ１２、保温用ヒータ
９、蓋ヒータ４へ電源を供給するコード２１を巻
装しておくコードリールケースで、係止爪２２，
２２にて前記底蓋１５に〓間S2を存して固定され
ている。２４は上面と一側面とを開放した保護カ
バーで、適所に多数の通気口２５を形成してい
る。２６，２６は取付用ボス、２７は環状に膨出
形成した突堤で段部２８を形成するもので、これ
らは底蓋１５に一体的に垂下形成している。３０
はプリント基板で、一面に前記シーズヒータ１２
等の電気部品への通電を制御するサイリスタ３
１、トランス３２、リレーコイル３３、トランジ
スタ３４等の半導体素子を設け、他面にこれら半
導体素子を電気的に接続する銅製のパターン３５
を設けている。そして、プリント基板３０を取付
用ボス２６，２６にネジ４０で固定するときに、
その周縁部を突堤２７の段部２８に係合して、密
閉空間S3を形成し、この密閉空間S3内に前記パタ
ーン３０が位置するように成している。 A skirt portion 17 having an internal space 16 is integrally molded into an annular shape on the outer peripheral surface of the bottom surface of the bottom cover 15, and a plurality of legs 18 are also integrally molded at appropriate positions. This skirt portion 17 is formed to be slightly shorter than the leg body 18, so that the main body 1 can be placed on a surface T such as a table.
When placed on the skirt portion 17 and the placement surface T
There is now a small distance S 1 between the two. Reference numeral 20 denotes a cord reel case in which a cord 21 for supplying power to the sheathed heater 12, heat retention heater 9, and lid heater 4 is wound.
At 22, it is fixed to the bottom cover 15 with a gap S2 . 24 is a protective cover whose top surface and one side are open, and a number of ventilation holes 25 are formed at appropriate locations. Reference numerals 26 and 26 denote mounting bosses, and 27 an annularly bulging jetty forming a step 28, which are integrally formed to hang down from the bottom cover 15. 30
is a printed circuit board with the sheathed heater 12 on one side.
Thyristor 3 that controls energization to electrical components such as
1. Semiconductor elements such as a transformer 32, a relay coil 33, a transistor 34, etc. are provided, and a copper pattern 35 is provided on the other side to electrically connect these semiconductor elements.
has been established. Then, when fixing the printed circuit board 30 to the mounting bosses 26, 26 with the screws 40,
The peripheral edge portion thereof is engaged with the step portion 28 of the jetty 27 to form a closed space S3 , and the pattern 30 is located within this closed space S3 .
(ト) 考案の効果
本考案は斯る構成を有しているため、密閉空間
内に虫の侵入がなくなり、よつてプリント基板の
パターン面の虫の排出物による酸化が防げ、短絡
による半導体素子の誤動作、異常動作を防止でき
るものである。(g) Effects of the invention Since the present invention has such a configuration, it prevents insects from entering the closed space, thereby preventing oxidation of the patterned surface of the printed circuit board due to insect excrement, and preventing semiconductor elements from being damaged due to short circuits. This can prevent malfunctions and abnormal operations.
第１図は本考案電気機器の概略断面図、第２図
は同底面図、第３図は同要部拡大断面図である。
３０……プリント基板、３１，３４……半導体
素子、３５……パターン、１５……底蓋、２７…
…突堤、S3……密閉空間。
FIG. 1 is a schematic sectional view of the electrical device of the present invention, FIG. 2 is a bottom view of the same, and FIG. 3 is an enlarged sectional view of the main parts. 30... Printed circuit board, 31, 34... Semiconductor element, 35... Pattern, 15... Bottom cover, 27...
… Jetty, S 3 … Closed space.
Claims (1)
一面に前記本体内の電気部品への通電を制御する
複数の半導体素子等を設け他面にこれらを電気的
に接続するためのパターンを設けたプリント基板
を取り付けたものにおいて、前記底蓋の外底面に
環状の突堤を膨出形成するとともに、この突堤に
前記プリント基板の周囲を密に固定して密閉空間
を形成し、この密閉空間に前記プリント基板のパ
ターンを設けた面を配置するようにしたことを特
徴とする電気機器。 The bottom cover that covers the bottom opening of the electrical equipment body,
A printed circuit board having a plurality of semiconductor elements, etc. for controlling energization of electrical components in the main body on one side and a pattern for electrically connecting them on the other side, A ring-shaped bulge is formed on the bottom surface, and the periphery of the printed circuit board is tightly fixed to the bulge to form a sealed space, and the patterned surface of the printed circuit board is placed in this sealed space. Electrical equipment characterized by:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9284686U JPH0420358Y2 (en) | 1986-06-18 | 1986-06-18 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9284686U JPH0420358Y2 (en) | 1986-06-18 | 1986-06-18 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS62204518U JPS62204518U (en) | 1987-12-26 |
| JPH0420358Y2 true JPH0420358Y2 (en) | 1992-05-11 |
Family
ID=30954907
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9284686U Expired JPH0420358Y2 (en) | 1986-06-18 | 1986-06-18 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0420358Y2 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0685733B2 (en) * | 1990-07-06 | 1994-11-02 | 松下電器産業株式会社 | rice cooker |
| JP2581127Y2 (en) * | 1991-07-09 | 1998-09-21 | 象印マホービン株式会社 | Waterproof structure of electric heating container |
| JP2009069182A (en) * | 2007-09-10 | 2009-04-02 | Sharp Corp | Display device |
-
1986
- 1986-06-18 JP JP9284686U patent/JPH0420358Y2/ja not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS62204518U (en) | 1987-12-26 |
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