JPS5810393Y2 - shield plate - Google Patents
shield plateInfo
- Publication number
- JPS5810393Y2 JPS5810393Y2 JP4860078U JP4860078U JPS5810393Y2 JP S5810393 Y2 JPS5810393 Y2 JP S5810393Y2 JP 4860078 U JP4860078 U JP 4860078U JP 4860078 U JP4860078 U JP 4860078U JP S5810393 Y2 JPS5810393 Y2 JP S5810393Y2
- Authority
- JP
- Japan
- Prior art keywords
- shield plate
- field effect
- effect transistor
- present
- slits
- 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
Landscapes
- Shielding Devices Or Components To Electric Or Magnetic Fields (AREA)
- Structure Of Receivers (AREA)
Description
【考案の詳細な説明】
本考案はテレビジョン受像機のチューナ装置等に使用し
て好適なシールド板に関し、特にシールド効果を改善す
る様にしたものである。[Detailed Description of the Invention] The present invention relates to a shield plate suitable for use in a tuner device of a television receiver, etc., and is particularly designed to improve the shielding effect.
テレビジョン受像機の電子同調チューナ装置は第１図に
示す如く、プリント配線基板１にマウントした高周波増
幅回路の入力側及び出力側間をシールドする為、高周波
増幅回路を構成する例えば電界効果トランジスタ２と交
叉して金属板より成るシールド板３をプリント配線基板
１上に垂直に固定したり、又半導体集積回路装置（以下
ＩＣと略称する）４の入力側及び出力側間をシールドす
る為このＩＣ４と交叉してシールド板５をプリント配線
基板１上に垂直に固定している。As shown in FIG. 1, the electronic tuning tuner device for a television receiver shields between the input side and the output side of a high frequency amplification circuit mounted on a printed wiring board 1. For example, a field effect transistor 2 constituting the high frequency amplification circuit This IC 4 is used to fix a shield plate 3 made of a metal plate vertically on the printed wiring board 1 and to shield between the input side and the output side of a semiconductor integrated circuit device (hereinafter abbreviated as IC) 4. A shield plate 5 is vertically fixed on the printed wiring board 1, intersecting with the shield plate 5.
この場合シールド板３，５の電界効果トランジスタ２．
ＩＣ４の対応部には例えば第２図及び第３図に示す如く
電界効果トランジスタ２を交換可能な様に即ち半田付等
が充分可能な程度の切欠き６を設ける必要があり、この
切欠き６はかなりの大きさを必要とし、この為シールド
効果を充分とる事ができない欠点があった。In this case, the field effect transistors 2.
For example, as shown in FIGS. 2 and 3, it is necessary to provide a notch 6 in the corresponding part of the IC 4 so that the field effect transistor 2 can be replaced, that is, a notch 6 large enough to allow soldering, etc. requires a considerable size, which has the drawback of not being able to provide a sufficient shielding effect.
本考案は斯る点に鑑み上述の如きシールド板に於けるシ
ールド効果を改善する様にしたものである。In view of this point, the present invention is designed to improve the shielding effect of the above-mentioned shield plate.
以下第４図及び第５図を参照しながら本考案シールド板
の一実施例につき説明しよう。Hereinafter, an embodiment of the shield plate of the present invention will be described with reference to FIGS. 4 and 5.
この第４図及び第５図に於いて第１図、第２図、第３図
に対応する部分には同一符号を付し、その詳細説明は省
略する。In FIGS. 4 and 5, parts corresponding to those in FIGS. 1, 2, and 3 are designated by the same reference numerals, and detailed explanation thereof will be omitted.
本例に於いてはシールド板３のプリント配線基板１にマ
ウントされな電界効果トランジスタ２の対応部に第４図
及び第４図に示す如くこの電界効果トランジスタ２の上
部ぎりぎりまで接近した切欠７を設けると共にこの電界
効果トランジスタ２とシールド板３と交叉する線上に於
ける両側即ちシールド板３の電界効果トランジスタ２の
略側縁部に対応する部分に夫々この電界効果トランジス
タ２側より所定長のスリツ）７ａ及び７ｂを入れる。In this example, a notch 7 is formed in the shield plate 3 corresponding to the field effect transistor 2 which is not mounted on the printed wiring board 1, as shown in FIGS. At the same time, slits of a predetermined length are formed from the field effect transistor 2 side on both sides of the line where the field effect transistor 2 and the shield plate 3 intersect, that is, in the portions of the shield plate 3 corresponding to substantially the side edges of the field effect transistor 2. ) Add 7a and 7b.
このスリツ）７ａ及び７ｂの長さはこのスリット７ａ及
び７ｂ間のシールド板３の一部３ａを折曲げたときにこ
の電界効果トランジスタ２の交換が可能な長さとする。The lengths of the slits 7a and 7b are such that the field effect transistor 2 can be replaced when the part 3a of the shield plate 3 between the slits 7a and 7b is bent.
その他は第１図、第２図、第３図と同様に構成する。The rest of the structure is the same as in FIGS. 1, 2, and 3.
本考案は上述の如く構成されているので電界効果トラン
ジスタ２を交換するときはスリット７ａ及び７ｂ間のシ
ールド板３の一部３ａを折曲げれば半田付等を行うこと
ができる。Since the present invention is constructed as described above, when replacing the field effect transistor 2, soldering or the like can be carried out by bending the part 3a of the shield plate 3 between the slits 7a and 7b.
この場合スリット７ａ及び７ｂが設けられているので容
易にシールド板３の一部３ａを折曲げることができ、又
交換後容易にこの部分３ａを元にもどすことができる。In this case, since the slits 7a and 7b are provided, the part 3a of the shield plate 3 can be easily bent, and the part 3a can be easily returned to its original position after replacement.
又本考案に於いては、電界効果トランジスタ２の交換を
考慮しなくて良いのでシールド板３の切欠７の大きさを
できるだけ小さくすることができ、それだけシールド効
果を上げることができる。Further, in the present invention, since there is no need to consider replacing the field effect transistor 2, the size of the notch 7 in the shield plate 3 can be made as small as possible, and the shielding effect can be increased accordingly.
以上述べた如く本考案によればテレビジョン受像機のチ
ューナ装置等に使用されるシールド板のシールド効果を
改善することができる利益がある。As described above, the present invention has the advantage of being able to improve the shielding effect of shield plates used in tuner devices of television receivers and the like.
尚上述実施例に於いては本考案を電界効果トランジスタ
２と交叉するシールド板３に適用した例につき述べたが
、本考案は上述実施例に限ることなく、その他のトラン
ジスタ、ＩＣ１その他の電気部品と交叉するシールド板
に上述同様に適用できることは容易に理解できよう。In the above-mentioned embodiment, an example in which the present invention is applied to the shield plate 3 that intersects with the field effect transistor 2 has been described, but the present invention is not limited to the above-mentioned embodiment, and can be applied to other transistors, ICs 1, and other electrical components. It is easy to understand that the above-mentioned method can also be applied to shield plates that intersect with each other.
又本考案は上述実施例に限ることなく本考案の要旨を逸
脱することなくその他種々の構成が取り得ることは勿論
である。Furthermore, it goes without saying that the present invention is not limited to the above-described embodiments, and that various other configurations may be adopted without departing from the gist of the present invention.
第１図はチューナ装置の例を示す平面図、第２図及び第
３図は夫々従来のシールド板の例を示す路線図、第４図
及び第５図は夫々本考案シールド板の一実施例を示す路
線図である。
１はプリント配線基板、２は電界効果トランジスタ、３
はシールド板、７は切欠、７ａ及び７ｂは夫々スリット
である。FIG. 1 is a plan view showing an example of a tuner device, FIGS. 2 and 3 are route maps showing examples of conventional shield plates, and FIGS. 4 and 5 are examples of an embodiment of the shield plate of the present invention. It is a route map showing. 1 is a printed wiring board, 2 is a field effect transistor, 3
7 is a shield plate, 7 is a notch, and 7a and 7b are slits.
Claims (1)
品と交叉して固定する様にしたシールド板に於いて、該
シールド板の上記電気部品の略側縁部、対応部に夫々上
記電気部品側より所定長のスリットを入れたことを特徴
とするシールド板。In a shield plate that is fixed to a printed wiring board across a transistor, an IC, or other electrical component, a predetermined length is provided from the electrical component side to approximately the side edge of the shield plate and the corresponding portion of the electrical component. A shield plate characterized by having slits.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4860078U JPS5810393Y2 (en) | 1978-04-13 | 1978-04-13 | shield plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4860078U JPS5810393Y2 (en) | 1978-04-13 | 1978-04-13 | shield plate |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS54151103U JPS54151103U (en) | 1979-10-20 |
| JPS5810393Y2 true JPS5810393Y2 (en) | 1983-02-25 |
Family
ID=28932625
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4860078U Expired JPS5810393Y2 (en) | 1978-04-13 | 1978-04-13 | shield plate |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5810393Y2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6325697B2 (en) * | 2017-01-05 | 2018-05-16 | ローム株式会社 | Power supply circuit |
-
1978
- 1978-04-13 JP JP4860078U patent/JPS5810393Y2/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS54151103U (en) | 1979-10-20 |
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