JP2532092Y2 - Mounting structure of flat fluorescent lamp - Google Patents
Mounting structure of flat fluorescent lampInfo
- Publication number
- JP2532092Y2 JP2532092Y2 JP1990090850U JP9085090U JP2532092Y2 JP 2532092 Y2 JP2532092 Y2 JP 2532092Y2 JP 1990090850 U JP1990090850 U JP 1990090850U JP 9085090 U JP9085090 U JP 9085090U JP 2532092 Y2 JP2532092 Y2 JP 2532092Y2
- Authority
- JP
- Japan
- Prior art keywords
- fluorescent lamp
- flat fluorescent
- printed circuit
- circuit board
- case
- 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
Landscapes
- Arrangement Of Elements, Cooling, Sealing, Or The Like Of Lighting Devices (AREA)
- Discharge Lamps And Accessories Thereof (AREA)
- Vessels And Coating Films For Discharge Lamps (AREA)
Description
【考案の詳細な説明】 （イ）産業上の利用分野 本考案は、カメラ一体型VTR等に内蔵する液晶ビュー
ファインダーバックライトに用いて好適な平面型蛍光灯
の実装構造に関する。DETAILED DESCRIPTION OF THE INVENTION (a) Industrial application field The present invention relates to a flat fluorescent lamp mounting structure suitable for use in a liquid crystal viewfinder backlight incorporated in a camera-integrated VTR or the like.
（ロ）従来の技術 近年、カメラ一体型VTRの小型化が進み、ビューファ
インダーもCRTに代わって液晶表示装置が用いられるよ
うになってきた。この液晶表示装置のバックライトとし
ては、特開昭60−189154号公報に示されるような平面型
螢光灯が好適である。(B) Conventional technology In recent years, miniaturization of a camera-integrated VTR has progressed, and a liquid crystal display device has been used as a viewfinder instead of a CRT. As a backlight of this liquid crystal display device, a flat fluorescent lamp as disclosed in JP-A-60-189154 is suitable.
この平面型螢光灯の駆動回路は第４図に示す通りであ
り、コネクタ（１）の２番端子より入力された同期信号
は、マルチバイブレータ用のIC（２）で波形整形され、
MOSFET（３）のゲートに入力される。（４）はインバー
タ用のトランスで、前記MOSFET（３）のスイッチングに
より、前記コネクタ（１）の１番端子からの入力電圧5V
を昇圧する。前記インバータトランス（４）は、端子
間の巻き数に対する端子間の巻き数比に応じた出
力電圧（約600V）を端子間に発生せしめ、これが平
面型螢光灯（５）に印加される。The driving circuit of this flat fluorescent lamp is as shown in FIG. 4. The synchronizing signal input from the second terminal of the connector (1) is shaped by a multivibrator IC (2).
Input to the gate of MOSFET (3). (4) is a transformer for an inverter, and an input voltage of 5 V from the first terminal of the connector (1) by switching of the MOSFET (3).
To boost. The inverter transformer (4) generates between the terminals an output voltage (approximately 600 V) corresponding to the ratio of the number of turns between the terminals to the number of turns between the terminals, and this is applied to the flat fluorescent lamp (5).
尚、同図において（R1）（R2）（C1）（C2）は出力パ
ルス幅を設定する抵抗及びコンデンサ、（R3）はIC入力
保護用抵抗、（C3）は入力電圧安定化用バイパスコンデ
ンサである。In the figure, (R1) (R2) (C1) (C2) are resistors and capacitors that set the output pulse width, (R3) is a resistor for IC input protection, and (C3) is a bypass capacitor for input voltage stabilization. is there.
上述の駆動回路の回路部品は、第５図の様にプリント
基板（６）上に配置されるとともに、第６図に示すよう
に組み立てられる。即ち、プリント基板（６）に平面型
螢光灯（５）の端子を半田付けし、シールド機能を有す
る金属製のケース（７）に収納する。The circuit components of the drive circuit described above are arranged on a printed circuit board (6) as shown in FIG. 5, and are assembled as shown in FIG. That is, the terminals of the flat fluorescent lamp (5) are soldered to the printed circuit board (6) and housed in a metal case (7) having a shielding function.
（ハ）考案が解決しようとする課題 ここで、上記平面型螢光灯（５）は、用いる液晶パネ
ルを１インチとした場合のものであるが、然し乍ら、更
に小さい液晶パネル（例えば、0.7インチ）に対応する
平面型螢光灯を構成する場合、プリント基板の面積も小
さくする必要があるが、同一の部品を載置することが困
難となり小型化の妨げとなっていた。(C) Problems to be Solved by the Invention Here, the flat fluorescent lamp (5) is a case where the liquid crystal panel used is 1 inch, but a smaller liquid crystal panel (for example, 0.7 inch) is used. In the case of forming a flat fluorescent lamp corresponding to (1), it is necessary to reduce the area of the printed circuit board, but it is difficult to mount the same components, which hinders miniaturization.
本考案は上述の点に鑑み為されたものであり、小型の
液晶パネルに対応して小型化が可能となる平面型螢光灯
の実装構造を提供するものである。The present invention has been made in view of the above points, and provides a mounting structure of a flat fluorescent lamp which can be downsized in correspondence with a small liquid crystal panel.
（ニ）課題を解決するための手段 本考案は、平面型螢光灯と、この平面型螢光灯を駆動
する駆動回路を載置するプリント基板と、このプリント
基板及び前記平面型螢光灯を収納するケースとからなる
平面型螢光灯の実装構造において、 前記プリント基板をフレキシブルプリント基板とし、
このフレキシブルプリント基板を前記平面型螢光灯と略
同一面積に折りたたんで前記ケース内に収納すると共
に、前記フレキシブルプリント基板の一部をコネクタと
し、このコネクタを前記ケースの外側へ突出せしめてな
る平面型螢光灯の実装構造である。(D) Means for Solving the Problems The present invention provides a flat fluorescent lamp, a printed circuit board on which a driving circuit for driving the flat fluorescent lamp is mounted, the printed board and the flat fluorescent lamp. And a case for accommodating the flat fluorescent lamp mounting structure, wherein the printed circuit board is a flexible printed circuit board,
The flexible printed circuit board is folded into approximately the same area as the flat fluorescent lamp and housed in the case, and a part of the flexible printed circuit board is used as a connector, and the connector is projected outside the case. This is the mounting structure of the type fluorescent lamp.
（ホ）作用 本考案のプリント基板は平面型螢光灯の大きさに応じ
て折りたたまれてケースに収納され、その際、コネクタ
部分はケースの外側へ突出する。(E) Function The printed circuit board of the present invention is folded according to the size of the flat fluorescent lamp and stored in the case, and at this time, the connector portion projects outside the case.
（ヘ）実施例 以下、図面に従い本考案の一実施例につき説明する。(F) Embodiment One embodiment of the present invention will be described below with reference to the drawings.
第１図は本実施例のプリント基板の平面図を示す。本
実施例におけるプリント基板には、フレキシブルプリン
ト基板（８）が用いられるが、載置される回路部品は基
本的に第７図のものと同一であり、２本の２点鎖線を中
心にMOSFFT（３）及びIC（２）が左右対称に配置される
とともに、トランス（４）と対称な位置には部品は載置
されず、導体パターンによるコネクタ（９）が形成され
ているだけである。FIG. 1 is a plan view of a printed circuit board according to the present embodiment. A flexible printed circuit board (8) is used as the printed circuit board in this embodiment, and the circuit components to be mounted are basically the same as those shown in FIG. (3) and the IC (2) are symmetrically arranged, and no parts are placed at a position symmetrical to the transformer (4), and only a connector (9) by a conductor pattern is formed.
尚、前記フレキシブルプリント基板（８）の前記IC
（２）が載置されている部分と前記コネクタ（９）との
間には、切欠き（8a）が形成されている。In addition, the IC of the flexible printed circuit board (8)
A notch (8a) is formed between the portion where (2) is placed and the connector (9).
次に、本実施例装置の組立てについて第２図及び第３
図に従い説明する。Next, FIGS. 2 and 3 show the assembly of the apparatus of this embodiment.
The description will be made according to the drawings.
先ず、フレキシブルプリント基板（８）を、第２図の
如く２点鎖線の位置で折り曲げ、IC（２）とMOSFET
（３）とを近接して対向せしめる。First, the flexible printed circuit board (8) is bent at the position indicated by the two-dot chain line as shown in FIG.
(3) and close to each other.
ここで、前記フレキシブルプリント基板（８）は、載
置される部品の中で一番背が高い部品、本実施例ではト
ランス（４）と同じ高さに折りたたまれる。Here, the flexible printed board (8) is folded at the same height as the tallest component among the components to be placed, in this embodiment, the transformer (4).
次に、このフレキシブルプリント基板（８）を平面型
螢光灯（５）の裏面に接着し、この平面型螢光灯（５）
のリード線（5a）を前記フレキシブルプリント基板
（８）の導体パターンに半田付けする。Next, the flexible printed circuit board (8) is adhered to the rear surface of the flat fluorescent lamp (5), and the flat fluorescent lamp (5) is bonded.
Is soldered to the conductor pattern of the flexible printed circuit board (8).
更に、前記コネクタ（９）を金属製のケース（10）に
形成した透孔（10a）に挿入するとともに、全体を前記
ケース（10）に収納し、第３図のように組み立てる。Further, the connector (9) is inserted into a through hole (10a) formed in a metal case (10), and the whole is housed in the case (10) and assembled as shown in FIG.
（ト）考案の効果 上述の如く、本考案はプリント基板をフレキシブルプ
リント基板とし、これを平面型螢光灯とほぼ同じ大きさ
に折りたたんでケースに収納すると共に、前記フレキシ
ブルプリント基板の一部をコネクタとし、これを前記ケ
ースの外側へ突出せしめるため、小型の液晶パネルに対
応して小型の平面型螢光灯ユニットが実現できる。(G) Effect of the present invention As described above, in the present invention, the printed circuit board is a flexible printed circuit board, which is folded to the same size as a flat fluorescent lamp and stored in a case. Since the connector is made to protrude to the outside of the case, a small flat fluorescent lamp unit corresponding to a small liquid crystal panel can be realized.
第１図は本考案の一実施例における平面型螢光灯のプリ
ント基板を示す図、第２図は平面型螢光灯ユニットの分
解斜視図、第３図は同組立て斜視図、第４図は平面型螢
光灯の駆動回路図、第５図は従来のプリント基板を示す
図、第６図は従来の平面型螢光灯ユニットの分解斜視図
である。 （２）…IC、（３）…MOSFET、（４）…トランス、
（５）…平面型螢光灯、（７）（10）…ケース、（８）
…フレキシブルプリント基板。FIG. 1 is a view showing a printed circuit board of a flat fluorescent lamp in one embodiment of the present invention, FIG. 2 is an exploded perspective view of a flat fluorescent lamp unit, FIG. 3 is an assembled perspective view of the same, and FIG. FIG. 5 is a drive circuit diagram of a flat fluorescent lamp, FIG. 5 is a view showing a conventional printed circuit board, and FIG. 6 is an exploded perspective view of a conventional flat fluorescent lamp unit. (2) ... IC, (3) ... MOSFET, (4) ... transformer,
(5) ... flat fluorescent lamp, (7) (10) ... case, (8)
... flexible printed circuit boards.
───────────────────────────────────────────────────── フロントページの続き (56)参考文献 特開 昭62−111233（ＪＰ，Ａ) 特開 平３−110710（ＪＰ，Ａ) 特開 平３−264985（ＪＰ，Ａ) 実開 昭63−174710（ＪＰ，Ｕ) 実開 昭56−38908（ＪＰ，Ｕ) ──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-62-111233 (JP, A) JP-A-3-110710 (JP, A) JP-A-3-264985 (JP, A) 174710 (JP, U) Actually open 1956-38908 (JP, U)
Claims (1)
する駆動回路を載置するプリント基板と、このプリント
基板及び前記平面型螢光灯を収納するケースとからなる
平面型螢光灯の実装構造において、 前記プリント基板をフレキシブルプリント基板とし、こ
のフレキシブルプリント基板を前記平面型螢光灯と略同
一面積に折りたたんで前記ケース内に収納すると共に、 前記フレキシブルプリント基板の一部をコネクタとし、
このコネクタを前記ケースの外側へ突出せしめてなる平
面型螢光灯の実装構造。1. A flat type fluorescent lamp comprising a flat fluorescent lamp, a printed circuit board on which a driving circuit for driving the flat fluorescent lamp is mounted, and a case for accommodating the printed circuit board and the flat fluorescent lamp. In the fluorescent lamp mounting structure, the printed circuit board is a flexible printed circuit board, and the flexible printed circuit board is folded into substantially the same area as the flat fluorescent lamp and housed in the case, and a part of the flexible printed circuit board is provided. Is a connector,
A flat fluorescent lamp mounting structure in which this connector is projected outside the case.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1990090850U JP2532092Y2 (en) | 1990-07-10 | 1990-08-29 | Mounting structure of flat fluorescent lamp |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7314790 | 1990-07-10 | ||
| JP2-73147 | 1990-07-10 | ||
| JP1990090850U JP2532092Y2 (en) | 1990-07-10 | 1990-08-29 | Mounting structure of flat fluorescent lamp |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0515022U JPH0515022U (en) | 1993-02-26 |
| JP2532092Y2 true JP2532092Y2 (en) | 1997-04-09 |
Family
ID=26414302
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1990090850U Expired - Fee Related JP2532092Y2 (en) | 1990-07-10 | 1990-08-29 | Mounting structure of flat fluorescent lamp |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2532092Y2 (en) |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0785141B2 (en) * | 1985-06-04 | 1995-09-13 | セイコーエプソン株式会社 | Viewfinder |
| DE8521514U1 (en) * | 1985-07-25 | 1986-11-20 | Muehlbauer, Ernst, Dipl.-Kaufm., 2000 Hamburg, De |
-
1990
- 1990-08-29 JP JP1990090850U patent/JP2532092Y2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0515022U (en) | 1993-02-26 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |