JPH08110507A - Back light device - Google Patents
Back light deviceInfo
- Publication number
- JPH08110507A JPH08110507A JP24600294A JP24600294A JPH08110507A JP H08110507 A JPH08110507 A JP H08110507A JP 24600294 A JP24600294 A JP 24600294A JP 24600294 A JP24600294 A JP 24600294A JP H08110507 A JPH08110507 A JP H08110507A
- Authority
- JP
- Japan
- Prior art keywords
- circuit board
- printed circuit
- fluorescent lamp
- power supply
- lamp
- 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.)
- Pending
Links
- 238000005476 soldering Methods 0.000 claims abstract description 9
- 239000004973 liquid crystal related substance Substances 0.000 abstract description 11
- 239000011521 glass Substances 0.000 abstract description 6
- 238000007789 sealing Methods 0.000 abstract description 5
- 229910052751 metal Inorganic materials 0.000 abstract description 3
- 239000002184 metal Substances 0.000 abstract description 3
- 230000035939 shock Effects 0.000 description 3
- 229910000679 solder Inorganic materials 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- BIJOYKCOMBZXAE-UHFFFAOYSA-N chromium iron nickel Chemical compound [Cr].[Fe].[Ni] BIJOYKCOMBZXAE-UHFFFAOYSA-N 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 description 1
- 229910052753 mercury Inorganic materials 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 229910000623 nickel–chromium alloy Inorganic materials 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Landscapes
- Liquid Crystal (AREA)
- Fastening Of Light Sources Or Lamp Holders (AREA)
- Vessels And Coating Films For Discharge Lamps (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、パーソナルコンピュー
タ、液晶テレビジョン、カメラ一体形ＶＴＲ等に利用で
きる液晶表示装置のバックライト装置に関するものであ
る。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a backlight device of a liquid crystal display device which can be used in a personal computer, a liquid crystal television, a camera integrated VTR and the like.
【０００２】[0002]
【従来の技術】図４に示すように、従来、この種のバッ
クライト装置は、両端部をガラス製の封着部材１２で封
着した偏平形蛍光ランプ１３とプリント基板８とからな
っており、蛍光ランプ１３の電極に接続され、かつ蛍光
ランプ１３の両端部の封着部材１２を貫通して導出した
例えばジュメット線からなる給電線１４を、ランプ給電
用導電パターン（図示せず）を有するプリント基板８の
周縁に設けた切り欠き部１１に係合し、導電パターンと
給電線１４とがはんだ１０によってはんだ付けされ接続
されている。2. Description of the Related Art Conventionally, as shown in FIG. 4, a backlight device of this type conventionally includes a flat fluorescent lamp 13 having both ends sealed with glass sealing members 12 and a printed circuit board 8. , A power supply line 14 made of, for example, a Dumet wire, which is connected to the electrodes of the fluorescent lamp 13 and extends through the sealing members 12 at both ends of the fluorescent lamp 13, and has a conductive pattern (not shown) for lamp power supply. The conductive pattern and the power supply line 14 are soldered and connected with the solder 10 by engaging with the notch 11 provided on the peripheral edge of the printed circuit board 8.
【０００３】また、図５に示すように、給電端子となる
突起部１６を一体成形した口金１７によって両端部が封
着された偏平形蛍光ランプ１５がある。このような偏平
形蛍光ランプの場合、口金１７の突起部１６にＬ字形に
成形した金属からなる導電性給電ステー１８を接続し、
この給電ステー１８とプリント基板８のランプ給電用導
電パターンとをはんだ付けして偏平形蛍光ランプ１５と
プリント基板８とを接続していた。Further, as shown in FIG. 5, there is a flat fluorescent lamp 15 whose both ends are sealed by a base 17 integrally formed with a projection 16 which serves as a power supply terminal. In the case of such a flat fluorescent lamp, a conductive power supply stay 18 made of an L-shaped metal is connected to the protrusion 16 of the base 17,
The flat fluorescent lamp 15 and the printed circuit board 8 were connected by soldering the power supply stay 18 and the conductive pattern for lamp power supply of the printed circuit board 8.
【０００４】[0004]
【発明が解決しようとする課題】しかし、図４に示すよ
うな従来のバックライト装置では、給電線１４であるジ
ュメット線が容易に曲がるため、偏平形蛍光ランプ１３
の給電線のプリント基板８へのはんだ付け作業の際、給
電線の変形を修正する必要があり、このため作業効率が
悪かった。However, in the conventional backlight device as shown in FIG. 4, the flat fluorescent lamp 13 because the Dumet wire, which is the power supply wire 14, is easily bent.
During the soldering work of the power supply line to the printed circuit board 8, it is necessary to correct the deformation of the power supply line, and thus the work efficiency was poor.
【０００５】また、液晶のバックライトとして用いる場
合、液晶と偏平形蛍光ランプとの相対的な位置関係が重
要であるため、偏平形蛍光ランプをプリント基板８に実
装する際に専用の位置決め治具が必要であったり、ま
た、このような治具を用いることによってはんだ付けの
作業性が悪化していた。When used as a liquid crystal backlight, the relative positional relationship between the liquid crystal and the flat fluorescent lamp is important. Therefore, when mounting the flat fluorescent lamp on the printed circuit board 8, a dedicated positioning jig is used. Or the use of such a jig deteriorates the workability of soldering.
【０００６】一方、図５に示すような従来の他のバック
ライト装置では、給電ステー１８を用いるため、コスト
アップにつながったり、溶接工数等の製造工程が増加し
たりすることとなる。また、給電ステー１８は、厚さ
０．２ｍｍ程度の導電性合金で作られるため、ランプ輸
送中の振動や衝撃によって給電ステー１８が変形し易
く、液晶とランプとの位置がずれてしまうという問題が
ある。また、給電ステー等の給電線の変形を修正する
際、バルブに加わる応力によって蛍光ランプがリークす
るという問題もあった。On the other hand, in another conventional backlight device as shown in FIG. 5, since the power feeding stay 18 is used, the cost is increased and the number of manufacturing steps such as the number of welding steps is increased. Further, since the power supply stay 18 is made of a conductive alloy having a thickness of about 0.2 mm, the power supply stay 18 is easily deformed by vibration or shock during transportation of the lamp, and the positions of the liquid crystal and the lamp are displaced. There is. Further, there is a problem that the fluorescent lamp leaks due to the stress applied to the bulb when the deformation of the power feed line such as the power feed stay is corrected.
【０００７】本発明は、このような問題を解決するため
になされたもので、振動や衝撃が加わっても蛍光ランプ
が位置ずれを起こすことのないバックライト装置を提供
するものである。The present invention has been made in order to solve such a problem, and provides a backlight device in which the fluorescent lamp is not displaced even if vibration or impact is applied.
【０００８】[0008]
【課題を解決するための手段】本発明のバックライト装
置は、偏平筒状のバルブの両端部に突起状の給電端子が
一体成形された口金を有する偏平形蛍光ランプと、ラン
プ給電パターンが形成されたプリント基板とを備え、前
記偏平形蛍光ランプの口金の給電端子が、前記プリント
基板に設けた穴または切り欠き部に嵌挿されて、前記ラ
ンプ給電パターンと前記給電端子とがはんだ付けによっ
て接続されている。SUMMARY OF THE INVENTION In a backlight device of the present invention, a flat fluorescent lamp having a cap integrally formed with projecting power supply terminals at both ends of a flat cylindrical bulb, and a lamp power supply pattern are formed. A printed circuit board, the power supply terminal of the base of the flat fluorescent lamp is inserted into a hole or notch provided in the printed circuit board, the lamp power supply pattern and the power supply terminal by soldering. It is connected.
【０００９】[0009]
【作用】この構成により、振動や衝撃に対して強い構造
とできる。With this structure, a structure that is strong against vibration and shock can be obtained.
【００１０】[0010]
【実施例】図１および図２に示すように、本発明の一実
施例のバックライト装置は、偏平形蛍光ランプ１とプリ
ント基板８とからなる。偏平形蛍光ランプ１は、偏平筒
状のガラス製バルブ２の両端に封着部材と給電端子を兼
ねた金属からなる口金３が封着されている。口金３には
給電端子として凸状の突起部４がそれぞれ一体成形され
ている。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS As shown in FIGS. 1 and 2, a backlight device according to an embodiment of the present invention comprises a flat fluorescent lamp 1 and a printed circuit board 8. The flat fluorescent lamp 1 has a flat tube-shaped glass bulb 2 and both ends of a glass bulb 2 which are sealed with a metal cap 3 which also serves as a sealing member and a power supply terminal. Convex projections 4 are integrally formed on the base 3 as power supply terminals.
【００１１】図２に示すように、口金３には、アノード
電極５およびカソード電極６がそれぞれ設けられてい
る。カソード電極６は水銀ディスペンサー７を介して口
金３に設けられている。As shown in FIG. 2, the base 3 is provided with an anode electrode 5 and a cathode electrode 6, respectively. The cathode electrode 6 is provided on the base 3 via a mercury dispenser 7.
【００１２】ランプ給電用導電パターン（図示せず）が
形成されたプリント基板８には、例えば液晶（図示せ
ず）との相対的な位置関係が良好となる位置に穴９が設
けられている。The printed circuit board 8 on which the conductive pattern (not shown) for lamp power supply is formed is provided with a hole 9 at a position where a relative positional relationship with a liquid crystal (not shown) is good. .
【００１３】蛍光ランプ１は、口金３に設けられた突起
部４を、プリント基板８に設けられた穴９に嵌挿しプリ
ント基板８のランプ給電用導電パターン（ランド）には
んだ１０によってはんだ付けされて、プリント基板８に
固定されている。In the fluorescent lamp 1, the protrusion 4 provided on the base 3 is fitted into the hole 9 provided on the printed circuit board 8 and soldered to the conductive pattern (land) for lamp power supply of the printed circuit board 8 with the solder 10. And is fixed to the printed circuit board 8.
【００１４】なお、口金３は、鉄−ニッケル−クロム合
金からなり、凸状の突起部４の厚みは０．４ｍｍ、突起
部４の長さはプリント基板８の厚さ０．８ｍｍよりも１
ｍｍ長い１．８ｍｍである。The base 3 is made of an iron-nickel-chromium alloy. The thickness of the convex protrusion 4 is 0.4 mm, and the length of the protrusion 4 is 1 mm smaller than the thickness of the printed circuit board 8 0.8 mm.
It is 1.8 mm long by mm.
【００１５】以上のように、本発明実施例のバックライ
ト装置は、偏平筒状のガラスバルブ２の両端部に給電端
子である凸状の突起部４が一体成形された口金３を有す
る偏平形蛍光ランプ１と、ランプ給電パターンが形成さ
れたプリント基板８とが互いに固定されており、偏平形
蛍光ランプ１の口金３の突起部４が、プリント基板８に
設けた穴９に嵌挿されて、ランプ給電パターンと突起部
４とが接続されているので、振動や衝撃による液晶と蛍
光ランプとの位置ずれを防止することができる。また、
ランプの給電端子の変形を防止でき、はんだ付けの作業
効率を向上させることができるとともに、給電端子の変
形を修正することがなくなるので、ランプのリークを防
止することができる。また、偏平形蛍光ランプのプリン
ト基板８への実装位置を、加工精度を上げることの容易
なプリント基板８の打ち抜き加工によって形成された穴
９によって決定できるため、ランプ実装の際に必要であ
った位置決め治具を不要とすることができ、短時間で蛍
光ランプを所定位置に精度良く実装することができる。
すなわち、液晶と偏平形蛍光ランプとの相対的な位置関
係も精度良く保持することができる。また、組立工数を
削減できコストダウン効果を得ることができる。As described above, the backlight device of the embodiment of the present invention has the flat type having the base 3 in which the convex projections 4 as the power supply terminals are integrally formed at both ends of the flat cylindrical glass bulb 2. The fluorescent lamp 1 and the printed circuit board 8 on which the lamp power supply pattern is formed are fixed to each other, and the projection 4 of the base 3 of the flat fluorescent lamp 1 is fitted into a hole 9 provided in the printed circuit board 8. Since the lamp power supply pattern and the protrusion 4 are connected, it is possible to prevent the liquid crystal and the fluorescent lamp from being displaced due to vibration or shock. Also,
The deformation of the power supply terminal of the lamp can be prevented, the work efficiency of soldering can be improved, and the deformation of the power supply terminal is not corrected, so that the leakage of the lamp can be prevented. Further, the mounting position of the flat fluorescent lamp on the printed circuit board 8 can be determined by the hole 9 formed by the punching process of the printed circuit board 8 which can easily improve the processing accuracy, and therefore it is necessary for mounting the lamp. The positioning jig can be eliminated, and the fluorescent lamp can be accurately mounted at a predetermined position in a short time.
That is, the relative positional relationship between the liquid crystal and the flat fluorescent lamp can be maintained with high accuracy. Further, the number of assembling steps can be reduced and the cost reduction effect can be obtained.
【００１６】図３は本発明の他の実施例であるバックラ
イト装置である。本発明の他の実施例のバックライト装
置は、プリント基板８の周端の一部に凹状の切り欠き部
１１を設けて上記した一実施例と同様の構成の偏平形蛍
光ランプ１を接続固定したものである。このような場合
も上記実施例と同様の効果が得られる。FIG. 3 shows a backlight device according to another embodiment of the present invention. In a backlight device according to another embodiment of the present invention, a flat fluorescent lamp 1 having the same configuration as that of the above-described embodiment is connected and fixed by providing a concave cutout portion 11 at a part of a peripheral edge of a printed circuit board 8. It was done. In such a case, the same effect as the above embodiment can be obtained.
【００１７】[0017]
【発明の効果】以上説明したように、本発明のバックラ
イト装置は、振動や衝撃による液晶と偏平形蛍光ランプ
との位置ずれを防止することができる。また、偏平形蛍
光ランプの給電端子のプリント基板へのはんだ付け作業
の際、給電端子の変形の発生を防止できはんだ付けの作
業効率を向上することができるとともに、給電端子の変
形を修正する際にランプの封着部にかかる応力をかける
こともなくなるので、この応力によるランプのリークを
防止することができる。また、蛍光ランプとプリント基
板の接続に別部品を用いることがないのでコストダウン
を図ることができる。そして、液晶と蛍光ランプとの相
対的な位置関係を良好に保持することができる。As described above, the backlight device of the present invention can prevent the liquid crystal and the flat fluorescent lamp from being displaced due to vibration or impact. In addition, when soldering the power supply terminal of the flat fluorescent lamp to the printed circuit board, deformation of the power supply terminal can be prevented, soldering work efficiency can be improved, and deformation of the power supply terminal can be corrected. Since no stress is applied to the sealed portion of the lamp, the leakage of the lamp due to this stress can be prevented. Further, since no separate part is used for connecting the fluorescent lamp and the printed circuit board, the cost can be reduced. Then, the relative positional relationship between the liquid crystal and the fluorescent lamp can be favorably maintained.
【図１】本発明の一実施例であるバックライト装置の組
立状態を示す斜視図FIG. 1 is a perspective view showing an assembled state of a backlight device according to an embodiment of the present invention.
【図２】同じく組立後の側面図[FIG. 2] Similarly, a side view after assembly.
【図３】本発明の他の実施例であるバックライト装置の
組立状態を示す斜視図FIG. 3 is a perspective view showing an assembled state of a backlight device according to another embodiment of the present invention.
【図４】従来のバックライト装置の組立状態を示す斜視
図FIG. 4 is a perspective view showing an assembled state of a conventional backlight device.
【図５】従来の他のバックライト装置の斜視図FIG. 5 is a perspective view of another conventional backlight device.
１ 偏平形蛍光ランプ ２ 偏平筒状ガラスバルブ ３ 口金 ４ 突起部 ８ プリント基板 ９ 穴 １０ はんだ 1 Flat fluorescent lamp 2 Flat cylindrical glass bulb 3 Base 4 Projection 8 Printed circuit board 9 Hole 10 Solder
Claims (1)
電端子が一体成形された口金を有する偏平形蛍光ランプ
と、ランプ給電パターンが形成されたプリント基板とを
備え、前記偏平形蛍光ランプの口金の給電端子が、前記
プリント基板に設けた穴または切り欠き部に嵌挿され
て、前記ランプ給電パターンと前記給電端子とがはんだ
付けによって接続されていることを特徴とするバックラ
イト装置。1. A flat fluorescent lamp having a base in which projecting power supply terminals are integrally formed at both ends of a flat cylindrical bulb, and a printed circuit board on which a lamp power supply pattern is formed. A backlight device in which a power supply terminal of a lamp base is fitted into a hole or a notch provided in the printed circuit board, and the lamp power supply pattern and the power supply terminal are connected by soldering. .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP24600294A JPH08110507A (en) | 1994-10-12 | 1994-10-12 | Back light device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP24600294A JPH08110507A (en) | 1994-10-12 | 1994-10-12 | Back light device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH08110507A true JPH08110507A (en) | 1996-04-30 |
Family
ID=17142009
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP24600294A Pending JPH08110507A (en) | 1994-10-12 | 1994-10-12 | Back light device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH08110507A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002117808A (en) * | 2000-10-06 | 2002-04-19 | Nec Corp | Flat fluorescent lamp, fixing structure thereof, and liquid crystal display device |
| WO2004054322A3 (en) * | 2002-12-12 | 2004-12-02 | Samsung Electronics Co Ltd | Lamp |
| CN100390634C (en) * | 2004-06-01 | 2008-05-28 | 爱德牌工程有限公司 | Flat fluorescent lamp, manufacturing method, apparatus and method for manufacturing flat fluorescent lamp panel |
-
1994
- 1994-10-12 JP JP24600294A patent/JPH08110507A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002117808A (en) * | 2000-10-06 | 2002-04-19 | Nec Corp | Flat fluorescent lamp, fixing structure thereof, and liquid crystal display device |
| WO2004054322A3 (en) * | 2002-12-12 | 2004-12-02 | Samsung Electronics Co Ltd | Lamp |
| CN100390634C (en) * | 2004-06-01 | 2008-05-28 | 爱德牌工程有限公司 | Flat fluorescent lamp, manufacturing method, apparatus and method for manufacturing flat fluorescent lamp panel |
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