JP4113016B2 - Tuner device - Google Patents

Tuner device Download PDF

Info

Publication number
JP4113016B2
JP4113016B2 JP2003068643A JP2003068643A JP4113016B2 JP 4113016 B2 JP4113016 B2 JP 4113016B2 JP 2003068643 A JP2003068643 A JP 2003068643A JP 2003068643 A JP2003068643 A JP 2003068643A JP 4113016 B2 JP4113016 B2 JP 4113016B2
Authority
JP
Japan
Prior art keywords
terminal
frame body
circuit board
tuner device
circuit
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
Application number
JP2003068643A
Other languages
Japanese (ja)
Other versions
JP2004282254A (en
Inventor
聖 飯牟礼
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Alps Alpine Co Ltd
Original Assignee
Alps Electric Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Alps Electric Co Ltd filed Critical Alps Electric Co Ltd
Priority to JP2003068643A priority Critical patent/JP4113016B2/en
Priority to KR1020040016776A priority patent/KR100623266B1/en
Priority to CNB2004100304198A priority patent/CN100442960C/en
Publication of JP2004282254A publication Critical patent/JP2004282254A/en
Application granted granted Critical
Publication of JP4113016B2 publication Critical patent/JP4113016B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Images

Classifications

    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K9/00—Screening of apparatus or components against electric or magnetic fields
    • H05K9/0007—Casings
    • H05K9/002—Casings with localised screening
    • H05K9/0039—Galvanic coupling of ground layer on printed circuit board [PCB] to conductive casing
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/06—Receivers
    • H04B1/08—Constructional details, e.g. cabinet
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K5/00—Casings, cabinets or drawers for electric apparatus
    • H05K5/0026—Casings, cabinets or drawers for electric apparatus provided with connectors and printed circuit boards [PCB], e.g. automotive electronic control units
    • H05K5/0069—Casings, cabinets or drawers for electric apparatus provided with connectors and printed circuit boards [PCB], e.g. automotive electronic control units having connector relating features for connecting the connector pins with the PCB or for mounting the connector body with the housing
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K9/00—Screening of apparatus or components against electric or magnetic fields
    • H05K9/0007—Casings
    • H05K9/006—Casings specially adapted for signal processing applications, e.g. CATV, tuner, antennas amplifier

Landscapes

  • Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Structure Of Receivers (AREA)

Description

【０００１】
【発明の属する技術分野】
本発明はデジタルチューナ等に使用して好適なチューナ装置に関する。
【０００２】
【従来の技術】
従来のチューナ装置の図面を説明すると、図５は従来のチューナ装置の平面図、図６は従来のチューナ装置の側面図である。
【０００３】
次に、従来のチューナ装置の構成を図５，図６に基づいて説明すると、金属板からなる箱形の筺体５１は、四方が囲まれてロ字状をなす壁部５１ａと、この壁部５１ａの一方の開放部側に設けられた側壁５１ｂと、この側壁５１ｂから外方に突出する端子部５１ｃと、壁部１５ａの他方の開放部側に切り欠き部５１ｄと、対向する壁部５１ａから下方に突出する脚部５１ｅを有する。
【０００４】
プリント基板からなる回路基板５２は、種々の電子部品５３が搭載されて、チューナ回路が形成されると共に、回路基板５２の一端側には、入、出力用の複数個の引出端子５４が並設されている。
【０００５】
この回路基板４２は、切り欠き部５１ｄに位置した状態で、枠体５１内に配置されて取り付けられると共に、引出端子５４が枠体５１外に突出した状態となっている。（例えば、特許文献１参照）
【０００６】
そして、このような構成を有するチューナ装置は、セット側である電子機器のマザー基板５５上に載置され、端子部５１ｃ、脚部５１ｅ、及び引出端子５４がマザー基板５５に挿通された状態で、マザー基板５５に半田付けされて取り付けられる。
【０００７】
しかし、枠体５１に設けられた端子部５１ｃは、マザー基板５５の接地用パターン（図示せず）に接続されるため、枠体５１の接地を行うことができるが、チューナ装置の枠体５１内に位置する回路基板５２の接地用パターンを接地することができず、チューナ装置の高周波特性が悪くなる。
【０００８】
また、端子部５１ｃがマザー基板５５の接地用パターン（図示せず）に接続されるため、マザー基板５５のパターン形成に制約を受け、マザー基板５５の融通性が悪くなる。
【０００９】
【特許文献１】
特開２００２−２７１０５４号公報
【００１０】
【発明が解決しようとする課題】
従来のチューナ装置は、枠体５１に設けられた端子部５１ｃがマザー基板５５の接地用パターンに接続されるため、枠体５１内に位置する回路基板５２の接地用パターンを接地することができず、チューナ装置の高周波特性が悪くなるという問題がある。
また、端子部５１ｃがマザー基板５５の接地用パターンに接続されるため、マザー基板５５のパターン形成に制約を受け、マザー基板５５の融通性が悪くなる。
【００１１】
そこで、本発明は高周波特性が良く、構成が簡単で、小型のチューナ装置を提供することを目的とする。
【００１２】
【課題を解決するための手段】
上記課題を解決するための第１の解決手段として、金属板からなる壁部によって四方が囲まれてロ字状をなした枠体と、この枠体内に配置された回路基板と、この回路基板の一端側に並設され、一つの前記壁部から前記枠体外に突出した複数の引出端子とを備え、前記引出端子は、前記壁部に設けられた切り欠き部を通って前記枠体外に突出すると共に、前記切り欠き部を有する前記壁部には、前記枠体内に突出する接地用の端子部が設けられ、前記端子部の端部が前記枠体内の前記回路基板に設けられた接地用パターンに接続された構成とした。
【００１３】
また、第２の解決手段として、前記端子部は、前記壁部の前記回路基板と平行な辺に設けられた構成とした。
また、第３の解決手段として、前記端子部は、前記切り欠き部が位置する前記壁部の辺に設けられた構成とした。
【００１４】
また、第４の解決手段として、前記端子部の端部は、複数に分岐して形成された構成とした。
また、第５の解決手段として、前記端子部の端部は、前記枠体内に位置する前記引出端子の先端部を越えて前記枠体内の奥部に位置した構成とした。
また、第６の解決手段として、前記枠体内は、シールド板によって複数の区画室に区画されると共に、前記回路基板には少なくともＲＦ同調回路が形成され、前記端子部は、前記ＲＦ同調回路が位置する前記区画室内に配置された構成とした。
【００１５】
また、第７の解決手段として、複数の前記端子部を有し、前記端子部が複数個の前記区画室内にそれぞれ配置された構成とした。
また、第８の解決手段として、前記回路基板には、デジタル復調回路を含むデジタルチューナ回路が形成された構成とした。
【００１６】
【発明の実施の形態】
本発明のチューナ装置の図面を説明すると、図１は本発明のチューナ装置の平面図、図２は本発明のチューナ装置の要部断面図、図３は本発明のチューナ装置の下面図、図４は本発明のチューナ装置に係る枠体の斜視図である。
【００１７】
次に、本発明のチューナ装置をデジタルチューナ装置に適用した場合を例にして、図１〜図４に基づいて説明すると、金属板からなる枠体１は、四方が囲まれ、両側に開口部を有したロ字状の壁部１ａと、このロ字状の壁部１ａ内を第１〜第５の区画室Ｋ１〜Ｋ５に区画するためのシールド板１ｂと、対向する一対の壁部１ａから下方に突出する爪部１ｃ付の脚部１ｄと、一つの壁部１ａに設けられた切り欠き部１ｅを有する。
【００１８】
また、枠体１は、壁部１ａ内に突出するように、切り欠き部１ｅが位置する壁部１ａの一辺（底辺）１ｆから折り曲げて設けられたＬ字状の接地用の端子部１ｇと、この端子部１ｇの端部に設けられた複数に分岐する分岐部１ｈと、切り欠き部１ｅが位置する壁部１ａの他の辺（側辺）１ｊから折り曲げて設けられたＬ字状の接地用の端子部１ｋと、シールド板１ｂから突出する複数個の突片１ｍを有する。
【００１９】
プリント基板からなる回路基板２は、銅箔等からなる配線パターン３ａと、銅箔等からなる接地用パターン３ｂを有し、このパターン３ａ、３ｂには、種々の電子部品４が搭載されて、所望のチューナ回路（デジタルチューナ回路）が形成されている。
【００２０】
また、回路基板２の一端側には、金属線等からなる複数個の入、出力用の引出端子５がチューナ回路に接続（半田付け）された状態で、一列に並設された状態で取り付けられており、これ等の引出端子５は、回路基板２の一端側から外方に突出した状態となっている。
【００２１】
なお、複数個の引出端子５が絶縁材の成型品からなる絶縁基体（図示せず）に埋設して取り付けられ、この絶縁基体を回路基板２上に載置した状態で、複数個の引出端子５をチューナ回路に接続（半田付け）するようにしても良い。
【００２２】
このような回路基板２は、切り欠き部１ｅ内に引出端子５が位置した状態で、枠体１内に配置され、枠体１の一部を折り曲げたり、半田付けすることによって枠体１に取り付けられる。
【００２３】
そして、回路基板２が枠体１内に取り付けられた際、引出端子５は、枠体１とは非接触状態で、切り欠き部１ｅを通って枠体１の外方に突出すると共に、端子部１ｇの分岐部１ｈ、端子部１ｋ、及び突片１ｍは、回路基板を貫通した状態で、枠体１内に位置する接地用パターン３ｂに接続（半田付け）される。
【００２４】
この時、端子部１ｇを設けた切り欠き部１ｅに位置する一辺１ｆは、複数個の引出端子５と対向すると共に、回路基板２と平行な状態となっており、この切り欠き部１ｅに位置する一辺１ｆに端子部１ｇが設けられた場合には、枠体１内に位置する接地用パターン３ｂと壁部１ａとの間の距離が短くなって、一層、高周波特性を良くすることができる。
【００２５】
なお、この実施例では、端子部１ｇが回路基板２と平行で、切り欠き部１ｅに位置する一辺１ｆに設けられたもので説明したが、端子部１ｇが一辺１ｆと対向する壁部１ａの外側の辺１ｎに設けられても良い。
【００２６】
また、端子部１ｇの端部である分岐部１ｈは、枠体１内に位置する引出端子５の先端部を越えて枠体１内の奥部に位置した状態で、接地用パターン３ｂに接続されている。
【００２７】
また、回路基板２が枠体１内に取り付けられた際、回路基板２のチューナ回路はシールド板１ｂで区画されて、第１の区画室Ｋ１にはアンテナ同調回路が配置され、第２の区画室Ｋ２にはＶＨＦ帯のＲＦ同調回路が配置され、第３の区画室Ｋ３にはＵＨＦ帯のＲＦ同調回路が配置され、第４の区画室Ｋ４にはＯＳＣ回路とＭＩＸ回路が配置され、更に、第５の区画室Ｋ５にはデジタル復調回路が配置された状態となっている。
【００２８】
その結果、端子部１ｇは、ＶＨＦ帯のＲＦ同調回路に位置する接地用パターン３ｂに接続されると共に、端子部１ｋは、アンテナ同調回路に位置する接地用パターン３ｂに接続されたものとなっている。
【００２９】
なお、切り欠き部１ｅの一辺１ｆに複数個の端子部１ｇが設けられ、それぞれの端子部１ｇが複数個のそれぞれの区画室内に配置されても良い。
【００３０】
アンテナ用の同軸型のコネクタ６は、アンテナ同調回路が位置する壁部１ａに取り付けられると共に、ここでは図示しないが、枠体１の両開放部を覆うカバーが設けられており、このような構成によって、チューナ装置が形成されている。
【００３１】
このような構成を有するチューナ装置は、セット側である電子機器のマザー基板７上に載置され、引出端子５と脚部１ｄがマザー基板７に挿通されると共に、爪部１ｃで掛け止めされた状態で、マザー基板７に半田付けされて取り付けられる。
【００３２】
そして、枠体１に設けられた脚部１ｄは、マザー基板７の接地用パターン（図示せず）に接続されて、枠体１の接地されると共に、引出端子５は、配線パターン（図示せず）に接続されて配線されるようになる。
【００３３】
【発明の効果】
本発明のチューナ装置は、金属板からなる壁部によって四方が囲まれてロ字状をなした枠体と、この枠体内に配置された回路基板と、この回路基板の一端側に並設され、一つの壁部から枠体外に突出した複数の引出端子とを備え、引出端子は、壁部に設けられた切り欠き部を通って枠体外に突出すると共に、切り欠き部を有する壁部には、枠体内に突出する接地用の端子部が設けられ、端子部の端部が枠体内の回路基板に設けられた接地用パターンに接続されたため、枠体内のチューナ回路の接地用パターンを端子部で接地できて、高周波特性の良いチューナ装置を提供できる。
また、端子部は、壁部と一体に設けられたため、その構成が簡単であると共に、枠体内に突出しているため、小型のものが得られる。
また、端子部によって、マザー基板のパターン形成に制約を受けことが無く、マザー基板に融通性を持たせることができる。
【００３４】
また、端子部は、壁部の回路基板と平行な辺に設けられたため、端子部は引出端子と対向する位置に自由に形成できて、必要な箇所で、引出端子と近い位置に自由に形成できて、自由度のあるものが得られる。
【００３５】
また、端子部は、切り欠き部が位置する壁部の辺に設けられたため、枠体内に位置する接地用パターンと壁部との間の距離が短くなって、一層、高周波特性を良くすることができる。
【００３６】
また、端子部の端部は、複数に分岐して形成されたため、一つの端子部で複数箇所の接地が容易であると共に、端子部の支持の強固なものが得られる。
【００３７】
また、端子部の端部は、枠体内に位置する引出端子の先端部を越えて枠体内の奥部に位置したため、引出端子間の間隔に関係なく、接地用パターンの接地ができ、従って、引出端子間の間隔を一層小さくできるため、配列方向に小型で、多数の引出端子の配列可能なものが得られる。
【００３８】
また、枠体内は、シールド板によって複数の区画室に区画されると共に、回路基板には少なくともＲＦ同調回路が形成され、端子部は、ＲＦ同調回路が位置する区画室内に配置されたため、高周波回路であるＲＦ同調回路の高周波特性を一層良くすることができる。
【００３９】
また、複数の端子部を有し、端子部が複数個の区画室内にそれぞれ配置されたため、高周波特性を一層良くすることができる。
【００４０】
また、回路基板には、デジタル復調回路を含むデジタルチューナ回路が形成されたため、特に、多数の引出端子が必要なデジタルチューナ回路に使用して好適である。
【図面の簡単な説明】
【図１】本発明のチューナ装置の平面図。
【図２】本発明のチューナ装置の要部断面図。
【図３】本発明のチューナ装置の下面図。
【図４】本発明のチューナ装置に係る枠体の斜視図。
【図５】従来のチューナ装置の平面図。
【図６】従来のチューナ装置の側面図。
【符号の説明】
１ 枠体
１ａ 壁部
１ｂ シールド板
１ｃ 爪部
１ｄ 脚部
１ｅ 切り欠き部
１ｆ 一辺
１ｇ 端子部
１ｈ 分岐部
１ｊ 他の辺
１ｋ 端子部
１ｍ 突片
１ｎ 辺
２ 回路基板
３ａ 配線パターン
３ｂ 接地用パターン
４ 電子部品
５ 引出端子
６ コネクタ
７ マザー基板
Ｋ１〜Ｋ５ 区画室[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a tuner device suitable for use in a digital tuner or the like.
[0002]
[Prior art]
FIG. 5 is a plan view of a conventional tuner device, and FIG. 6 is a side view of the conventional tuner device.
[0003]
Next, the configuration of a conventional tuner device will be described with reference to FIGS. 5 and 6. A box-shaped casing 51 made of a metal plate has a wall portion 51 a that is surrounded by four sides and forms a square shape, and this wall portion. A side wall 51b provided on one open part side of 51a, a terminal part 51c projecting outward from the side wall 51b, a notch part 51d on the other open part side of the wall part 15a, and an opposing wall part 51a Leg portion 51e projecting downward from the bottom.
[0004]
A circuit board 52 made of a printed circuit board is mounted with various electronic components 53 to form a tuner circuit. On one end side of the circuit board 52, a plurality of input and output lead terminals 54 are arranged in parallel. Has been.
[0005]
The circuit board 42 is disposed and attached in the frame 51 in a state where the circuit board 42 is located in the notch 51d, and the lead terminal 54 projects out of the frame 51. (For example, see Patent Document 1)
[0006]
The tuner device having such a configuration is placed on the mother board 55 of the electronic device on the set side, and the terminal part 51c, the leg part 51e, and the lead terminal 54 are inserted through the mother board 55. The solder is attached to the mother board 55 by soldering.
[0007]
However, since the terminal portion 51c provided in the frame 51 is connected to the grounding pattern (not shown) of the mother board 55, the frame 51 can be grounded, but the frame 51 of the tuner device. The grounding pattern of the circuit board 52 located inside cannot be grounded, and the high frequency characteristics of the tuner device deteriorate.
[0008]
Further, since the terminal portion 51c is connected to the grounding pattern (not shown) of the mother substrate 55, the pattern formation of the mother substrate 55 is restricted, and the flexibility of the mother substrate 55 is deteriorated.
[0009]
[Patent Document 1]
Japanese Patent Laid-Open No. 2002-271054
[Problems to be solved by the invention]
In the conventional tuner device, since the terminal portion 51c provided on the frame 51 is connected to the grounding pattern on the mother board 55, the grounding pattern on the circuit board 52 located in the frame 51 can be grounded. Therefore, there is a problem that the high frequency characteristics of the tuner device are deteriorated.
Further, since the terminal portion 51c is connected to the grounding pattern of the mother board 55, the pattern formation of the mother board 55 is restricted, and the flexibility of the mother board 55 is deteriorated.
[0011]
SUMMARY OF THE INVENTION An object of the present invention is to provide a small tuner device having good high frequency characteristics and a simple configuration.
[0012]
[Means for Solving the Problems]
As a first means for solving the above-mentioned problems, a frame body which is surrounded by a wall portion made of a metal plate and has a square shape, a circuit board disposed in the frame body, and the circuit board A plurality of lead terminals projecting out of the frame body from one wall portion, and the lead terminals pass through notches provided in the wall portion and are outside the frame body. The wall portion that protrudes and has the cutout portion is provided with a grounding terminal portion that protrudes into the frame body, and an end portion of the terminal portion is provided on the circuit board in the frame body. It was set as the structure connected to the pattern for use.
[0013]
As a second solution, the terminal portion is provided on a side of the wall portion parallel to the circuit board.
As a third solution, the terminal portion is provided on a side of the wall portion where the notch portion is located.
[0014]
Further, as a fourth solution, the end of the terminal portion is formed to be branched into a plurality.
Further, as a fifth solving means, the end of the terminal portion is located in the inner portion of the frame beyond the leading end of the lead terminal located in the frame.
As a sixth solution, the frame body is partitioned into a plurality of compartments by a shield plate, and at least an RF tuning circuit is formed on the circuit board, and the terminal portion includes the RF tuning circuit. It was set as the structure arrange | positioned in the said compartment which is located.
[0015]
Further, as a seventh solving means, a plurality of the terminal portions are provided, and the terminal portions are respectively disposed in the plurality of compartments.
As an eighth solution, the circuit board has a digital tuner circuit including a digital demodulation circuit.
[0016]
DETAILED DESCRIPTION OF THE INVENTION
FIG. 1 is a plan view of a tuner device of the present invention, FIG. 2 is a cross-sectional view of a main part of the tuner device of the present invention, and FIG. 3 is a bottom view of the tuner device of the present invention. 4 is a perspective view of a frame body according to the tuner device of the present invention.
[0017]
Next, a case where the tuner device of the present invention is applied to a digital tuner device will be described as an example with reference to FIGS. 1 to 4. The frame body 1 made of a metal plate is surrounded on all sides and has openings on both sides. A square-shaped wall portion 1a having a wall, a shield plate 1b for partitioning the inside of the square-shaped wall portion 1a into first to fifth compartments K1 to K5, and a pair of opposing wall portions 1a A leg portion 1d with a claw portion 1c projecting downward from the bottom and a notch portion 1e provided in one wall portion 1a.
[0018]
In addition, the frame body 1 includes an L-shaped grounding terminal portion 1g provided by bending from one side (bottom side) 1f of the wall portion 1a where the notch portion 1e is positioned so as to protrude into the wall portion 1a. An L-shaped bent portion 1h provided at an end of the terminal portion 1g and a bent portion 1h provided on the other side (side) 1j of the wall portion 1a where the notch portion 1e is located. It has a terminal portion 1k for grounding and a plurality of protruding pieces 1m protruding from the shield plate 1b.
[0019]
The circuit board 2 made of a printed circuit board has a wiring pattern 3a made of copper foil or the like and a grounding pattern 3b made of copper foil or the like. Various electronic components 4 are mounted on the patterns 3a and 3b. A desired tuner circuit (digital tuner circuit) is formed.
[0020]
In addition, a plurality of input / output lead terminals 5 made of metal wires or the like are connected to the tuner circuit (soldered) and arranged in a line on one end of the circuit board 2. These lead terminals 5 are in a state of protruding outward from one end side of the circuit board 2.
[0021]
The plurality of lead terminals 5 are embedded and attached to an insulating base (not shown) made of a molded product of an insulating material, and the plurality of lead terminals are mounted on the circuit board 2. 5 may be connected (soldered) to the tuner circuit.
[0022]
Such a circuit board 2 is arranged in the frame body 1 with the lead-out terminal 5 positioned in the notch portion 1e, and a part of the frame body 1 is bent or soldered to the frame body 1. It is attached.
[0023]
When the circuit board 2 is mounted in the frame body 1, the lead terminal 5 is in a non-contact state with the frame body 1 and protrudes outward from the frame body 1 through the notch portion 1 e. The branch portion 1h, the terminal portion 1k, and the protruding piece 1m of the portion 1g are connected (soldered) to the grounding pattern 3b located in the frame body 1 while penetrating the circuit board.
[0024]
At this time, one side 1f located in the notch portion 1e provided with the terminal portion 1g faces the plurality of lead terminals 5 and is parallel to the circuit board 2, and is located in the notch portion 1e. When the terminal portion 1g is provided on the one side 1f, the distance between the ground pattern 3b located in the frame 1 and the wall portion 1a is shortened, and the high frequency characteristics can be further improved. .
[0025]
In this embodiment, the terminal portion 1g is parallel to the circuit board 2 and provided on one side 1f located in the cutout portion 1e. However, the terminal portion 1g is formed on the wall 1a facing the one side 1f. It may be provided on the outer side 1n.
[0026]
Further, the branch portion 1h, which is the end portion of the terminal portion 1g, is connected to the grounding pattern 3b in a state where it is located in the inner portion of the frame body 1 beyond the distal end portion of the lead terminal 5 positioned in the frame body 1. Has been.
[0027]
When the circuit board 2 is mounted in the frame 1, the tuner circuit of the circuit board 2 is partitioned by the shield plate 1 b, and the antenna tuning circuit is disposed in the first partition K 1, and the second partition A VHF band RF tuning circuit is disposed in the chamber K2, a UHF band RF tuning circuit is disposed in the third compartment K3, an OSC circuit and a MIX circuit are disposed in the fourth compartment K4, and In the fifth compartment K5, a digital demodulating circuit is arranged.
[0028]
As a result, the terminal portion 1g is connected to the grounding pattern 3b located in the RF tuning circuit in the VHF band, and the terminal portion 1k is connected to the grounding pattern 3b located in the antenna tuning circuit. Yes.
[0029]
A plurality of terminal portions 1g may be provided on one side 1f of the notch portion 1e, and each terminal portion 1g may be disposed in each of a plurality of compartments.
[0030]
The antenna-type coaxial connector 6 is attached to the wall 1a where the antenna tuning circuit is located, and is provided with a cover that covers both open portions of the frame 1 (not shown). Thus, a tuner device is formed.
[0031]
The tuner device having such a configuration is placed on the mother board 7 of the electronic device on the set side, and the lead-out terminals 5 and the leg parts 1d are inserted into the mother board 7 and latched by the claw parts 1c. In this state, it is soldered and attached to the mother board 7.
[0032]
The leg portion 1d provided on the frame body 1 is connected to a grounding pattern (not shown) of the mother board 7, and the frame body 1 is grounded, and the lead terminal 5 is connected to a wiring pattern (not shown). To be wired.
[0033]
【The invention's effect】
The tuner device of the present invention is arranged in parallel on the one end side of the circuit board, a frame body that is surrounded by a wall portion made of a metal plate and has a square shape, a circuit board disposed in the frame body, and the circuit board. A plurality of lead terminals projecting out of the frame body from one wall portion, the lead terminals projecting out of the frame body through the notch portions provided in the wall portion, and on the wall portion having the notch portions The terminal for grounding that protrudes into the frame is provided, and the end of the terminal is connected to the grounding pattern that is provided on the circuit board in the frame. A tuner device that can be grounded at the section and has good high frequency characteristics can be provided.
In addition, since the terminal portion is provided integrally with the wall portion, the configuration is simple and the terminal portion protrudes into the frame, so that a small size can be obtained.
In addition, the terminal portion is not restricted in the pattern formation of the mother substrate, and the mother substrate can be made flexible.
[0034]
In addition, since the terminal part is provided on the side parallel to the circuit board of the wall part, the terminal part can be freely formed at a position facing the extraction terminal, and can be freely formed at a position close to the extraction terminal at a required position. Can be obtained with a degree of freedom.
[0035]
In addition, since the terminal portion is provided on the side of the wall portion where the notch portion is located, the distance between the ground pattern located in the frame and the wall portion is shortened, and the high frequency characteristics are further improved. Can do.
[0036]
Further, since the end portion of the terminal portion is formed to be branched into a plurality of portions, it is easy to ground a plurality of locations with one terminal portion, and a strong support for the terminal portion can be obtained.
[0037]
In addition, since the end of the terminal portion is located in the back of the frame beyond the leading end of the lead terminal located in the frame, the grounding pattern can be grounded regardless of the spacing between the lead terminals. Since the distance between the lead terminals can be further reduced, a device that is small in the arrangement direction and can be arranged with a large number of lead terminals is obtained.
[0038]
The frame body is partitioned into a plurality of compartments by a shield plate, at least an RF tuning circuit is formed on the circuit board, and the terminal portion is disposed in the compartment where the RF tuning circuit is located. The high frequency characteristics of the RF tuning circuit can be further improved.
[0039]
Moreover, since it has a some terminal part and the terminal part is each arrange | positioned in the some compartment, the high frequency characteristic can be improved further.
[0040]
Further, since a digital tuner circuit including a digital demodulating circuit is formed on the circuit board, the circuit board is particularly suitable for use in a digital tuner circuit that requires a large number of lead terminals.
[Brief description of the drawings]
FIG. 1 is a plan view of a tuner device according to the present invention.
FIG. 2 is a cross-sectional view of a main part of the tuner device of the present invention.
FIG. 3 is a bottom view of the tuner device of the present invention.
FIG. 4 is a perspective view of a frame body according to the tuner device of the present invention.
FIG. 5 is a plan view of a conventional tuner device.
FIG. 6 is a side view of a conventional tuner device.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Frame 1a Wall part 1b Shield board 1c Claw part 1d Leg part 1e Notch part 1f One side 1g Terminal part 1h Branch part 1j Other side 1k Terminal part 1m Projection piece 1n Side 2 Circuit board 3a Wiring pattern 3b Grounding pattern 4 Electronic component 5 Lead terminal 6 Connector 7 Mother board K1 to K5 Compartment room

Claims (8)

金属板からなる壁部によって四方が囲まれてロ字状をなした枠体と、この枠体内に配置された回路基板と、この回路基板の一端側に並設され、一つの前記壁部から前記枠体外に突出した複数の引出端子とを備え、前記引出端子は、前記壁部に設けられた切り欠き部を通って前記枠体外に突出すると共に、前記切り欠き部を有する前記壁部には、前記枠体内に突出する接地用の端子部が設けられ、前記端子部の端部が前記枠体内の前記回路基板に設けられた接地用パターンに接続されたことを特徴とするチューナ装置。A rectangular frame-shaped frame surrounded by a wall portion made of a metal plate, a circuit board disposed in the frame body, and arranged on one end side of the circuit board. A plurality of lead terminals projecting out of the frame body, the lead terminals projecting out of the frame body through a notch provided in the wall part, and the wall part having the notch part The tuner device is characterized in that a grounding terminal portion protruding into the frame body is provided, and an end portion of the terminal portion is connected to a grounding pattern provided on the circuit board in the frame body. 前記端子部は、前記壁部の前記回路基板と平行な辺に設けられたことを特徴とする請求項１記載のチューナ装置。The tuner device according to claim 1, wherein the terminal portion is provided on a side of the wall portion that is parallel to the circuit board. 前記端子部は、前記切り欠き部が位置する前記壁部の辺に設けられたことを特徴とする請求項１，又は２記載のチューナ装置。The tuner device according to claim 1, wherein the terminal portion is provided on a side of the wall portion where the notch portion is located. 前記端子部の端部は、複数に分岐して形成されたことを特徴とする請求項１から３の何れかに記載のチューナ装置。The tuner device according to claim 1, wherein an end portion of the terminal portion is formed to be branched into a plurality of portions. 前記端子部の端部は、前記枠体内に位置する前記引出端子の先端部を越えて前記枠体内の奥部に位置したことを特徴とする請求項１から４の何れかに記載のチューナ装置。5. The tuner device according to claim 1, wherein an end portion of the terminal portion is located in a deep portion in the frame body beyond a distal end portion of the lead terminal located in the frame body. . 前記枠体内は、シールド板によって複数の区画室に区画されると共に、前記回路基板には少なくともＲＦ同調回路が形成され、前記端子部は、前記ＲＦ同調回路が位置する前記区画室内に配置されたことを特徴とする請求項１から５の何れかに記載のチューナ装置。The frame body is partitioned into a plurality of compartments by a shield plate, at least an RF tuning circuit is formed on the circuit board, and the terminal portion is disposed in the compartment where the RF tuning circuit is located. The tuner device according to any one of claims 1 to 5, wherein 複数の前記端子部を有し、前記端子部が複数個の前記区画室内にそれぞれ配置されたことを特徴とする請求項６記載のチューナ装置。The tuner device according to claim 6, comprising a plurality of the terminal portions, wherein the terminal portions are respectively disposed in the plurality of compartments. 前記回路基板には、デジタル復調回路を含むデジタルチューナ回路が形成されたことを特徴とする請求項６、又は７記載のチューナ装置。8. The tuner device according to claim 6, wherein a digital tuner circuit including a digital demodulation circuit is formed on the circuit board.
JP2003068643A 2003-03-13 2003-03-13 Tuner device Expired - Fee Related JP4113016B2 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
JP2003068643A JP4113016B2 (en) 2003-03-13 2003-03-13 Tuner device
KR1020040016776A KR100623266B1 (en) 2003-03-13 2004-03-12 Tuner device
CNB2004100304198A CN100442960C (en) 2003-03-13 2004-03-15 Tuning devices

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2003068643A JP4113016B2 (en) 2003-03-13 2003-03-13 Tuner device

Publications (2)

Publication Number Publication Date
JP2004282254A JP2004282254A (en) 2004-10-07
JP4113016B2 true JP4113016B2 (en) 2008-07-02

Family

ID=33285916

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2003068643A Expired - Fee Related JP4113016B2 (en) 2003-03-13 2003-03-13 Tuner device

Country Status (3)

Country Link
JP (1) JP4113016B2 (en)
KR (1) KR100623266B1 (en)
CN (1) CN100442960C (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4787626B2 (en) * 2006-02-15 2011-10-05 アルプス電気株式会社 High frequency unit
JP4938073B2 (en) * 2009-11-10 2012-05-23 シャープ株式会社 Broadcast receiver

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3254723B2 (en) * 1992-04-17 2002-02-12 株式会社村田製作所 Card type high frequency equipment
JP3312060B2 (en) * 1993-06-23 2002-08-05 シャープ株式会社 DBS tuner
JPH07263891A (en) * 1994-03-18 1995-10-13 Fujitsu Ltd Electronic/communication device unit structure and shielding member
JP3153711B2 (en) * 1994-07-27 2001-04-09 シャープ株式会社 Up-down tuner
JP3427041B2 (en) * 1994-07-27 2003-07-14 シャープ株式会社 Up-down tuner
JP3537299B2 (en) * 1997-10-13 2004-06-14 アルプス電気株式会社 Television tuner
JP4601743B2 (en) * 1999-07-02 2010-12-22 株式会社東芝 Ultrasonic diagnostic equipment
JP3490036B2 (en) * 1999-12-16 2004-01-26 シャープ株式会社 Printed circuit board for mounting shield case
JP2002271054A (en) * 2001-03-06 2002-09-20 Mitsumi Electric Co Ltd Tuner device

Also Published As

Publication number Publication date
KR100623266B1 (en) 2006-09-18
CN100442960C (en) 2008-12-10
CN1531390A (en) 2004-09-22
JP2004282254A (en) 2004-10-07
KR20040081373A (en) 2004-09-21

Similar Documents

Publication Publication Date Title
FI87854B (en) FOERFARANDE FOER ATT TILLVERKA ETT HOEGFREKVENSFILTER SAMT HOEGFREKVENSFILTER TILLVERKAT ENLIGT FOERFARANDET
EP1633015B1 (en) Sealing member and sealing structure of electronic circuit unit
US7042529B2 (en) Small tuner unit having shielding effect
US7361030B2 (en) Mounting structure of high frequency apparatus
JP4113016B2 (en) Tuner device
JP2009212263A (en) Electronic circuit module
KR100586902B1 (en) Electronic circuit unit
US7247053B2 (en) High-frequency apparatus having high performance and capable of preventing entry of interfering wave into terminal
JP3794874B2 (en) Transmission / reception unit
JP2005159836A (en) Antenna device
JP2005184756A (en) Antenna device
EP1367869B1 (en) Radio frequency circuit connection structure
JP3453029B2 (en) Ground terminal structure
JP4374285B2 (en) Method for manufacturing frame of high-frequency device
JP2010153415A (en) Electronic apparatus
JPS6042485Y2 (en) High frequency circuit equipment
JPS605623Y2 (en) Multi-stage tuned filter
JPH0677874A (en) Selective call radio receiver
JP2001177424A (en) Tuner unit
JP2007242695A (en) High-frequency unit
JPH0215409Y2 (en)
JPS6245732B2 (en)
JP2005159837A (en) Antenna device
JP2003309392A (en) High-frequency unit
JP2003174270A (en) Tuner unit

Legal Events

Date Code Title Description
A621 Written request for application examination

Free format text: JAPANESE INTERMEDIATE CODE: A621

Effective date: 20051130

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20080122

A521 Written amendment

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20080226

TRDD Decision of grant or rejection written
A01 Written decision to grant a patent or to grant a registration (utility model)

Free format text: JAPANESE INTERMEDIATE CODE: A01

Effective date: 20080401

A61 First payment of annual fees (during grant procedure)

Free format text: JAPANESE INTERMEDIATE CODE: A61

Effective date: 20080410

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20110418

Year of fee payment: 3

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20120418

Year of fee payment: 4

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20120418

Year of fee payment: 4

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20130418

Year of fee payment: 5

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20140418

Year of fee payment: 6

LAPS Cancellation because of no payment of annual fees