JPH07282776A - Electrode for cold cathode fluorescent lamp and manufacture thereof - Google Patents
Electrode for cold cathode fluorescent lamp and manufacture thereofInfo
- Publication number
- JPH07282776A JPH07282776A JP6506194A JP6506194A JPH07282776A JP H07282776 A JPH07282776 A JP H07282776A JP 6506194 A JP6506194 A JP 6506194A JP 6506194 A JP6506194 A JP 6506194A JP H07282776 A JPH07282776 A JP H07282776A
- Authority
- JP
- Japan
- Prior art keywords
- electrode
- electrode body
- fluorescent lamp
- cathode fluorescent
- cold cathode
- 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
Landscapes
- Manufacture Of Electron Tubes, Discharge Lamp Vessels, Lead-In Wires, And The Like (AREA)
- Discharge Lamp (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は例えば液晶表示装置のバ
ックライト光源等に使用される冷陰極蛍光ランプの電極
に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electrode of a cold cathode fluorescent lamp used as a light source for a backlight of a liquid crystal display device, for example.
【０００２】[0002]
【従来の技術】液晶表示装置のバックライト光源等に使
用される冷陰極蛍光ランプは、例えば外形４ｍｍ程度、
肉厚０.８５ｍｍ程度のガラス管の内面に蛍光膜を形成
し、ガラス管の両端部の内部に電極を取付け、この電極
に導入線を接合しガラス管の端部より導出させて構成さ
れている。2. Description of the Related Art A cold cathode fluorescent lamp used as a backlight light source of a liquid crystal display device has, for example, an outer shape of about 4 mm,
A fluorescent film is formed on the inner surface of a glass tube having a wall thickness of about 0.85 mm, electrodes are attached inside both ends of the glass tube, and lead wires are joined to the electrodes and led out from the ends of the glass tube. There is.
【０００３】従来からこのような冷陰極蛍光ランプにお
いては、例えば、特開平４−１３７４３０号公報に開示
されているような、リボンタイプの電極が使われてい
る。従来のリボンタイプの電極の一例を説明すると、図
６に示されるように一端に導入線ｂが接合されたニッケ
ル（Ｎｉ）線の基板ａの両側に、片面にランプ内の酸素
等の不純ガスを吸収するゲッターｄが圧着され、反対面
にランプ内に水銀蒸気を放出する水銀合金ｅが圧着され
たリボンｃを配置し、各リボンｃの端部を基板ａに楔形
に溶接して構成されている。Conventionally, in such a cold cathode fluorescent lamp, a ribbon type electrode as disclosed, for example, in Japanese Patent Laid-Open No. 4-137430 is used. An example of a conventional ribbon-type electrode will be described. As shown in FIG. 6, an impurity gas such as oxygen in a lamp is provided on one side of a nickel (Ni) wire substrate a having one end joined to a lead-in wire b. A ribbon c having a getter d that absorbs is attached to the opposite surface, and a ribbon c having a mercury alloy e that emits mercury vapor is attached to the opposite surface, and the ends of each ribbon c are welded to the substrate a in a wedge shape. ing.
【０００４】ところで、近年の液晶表示装置の普及化及
び小型化に伴い、冷陰極蛍光ランプの細径化及び長寿命
化の要求が高まっている。従って、その電極についても
小型化、長寿命化更に製造容易化によるコストダウンの
要請が高まって来た。リボンタイプの電極の場合、電極
の外径寸法が大きくなり、冷陰極蛍光ランプの細径化が
困難である。また、電極の製造の際にニッケル（Ｎｉ）
線の基板にリボンを溶接するためその溶接の熱によりリ
ボンの水銀合金中の水銀が析出し易く製造が容易でない
という問題がある。更に従来のリボンタイプの電極を製
造する場合、長い帯状のニッケル製リボンの片面にゲッ
ターを反対面に水銀合金をビード状に付着形成したもの
を、所定の幅に裁断して使用するのであるが、裁断工程
中にリボンからゲッター或いは水銀合金がしばしば脱落
してしまい、無駄が発生する問題もあった。With the recent widespread use and miniaturization of liquid crystal display devices, there is an increasing demand for a cold cathode fluorescent lamp having a smaller diameter and a longer life. Therefore, there is an increasing demand for cost reduction of the electrode by downsizing, extending the life and facilitating the manufacturing. In the case of a ribbon type electrode, the outer diameter of the electrode is large, and it is difficult to reduce the diameter of the cold cathode fluorescent lamp. In addition, nickel (Ni) is used when manufacturing the electrode.
Since the ribbon is welded to the wire substrate, there is a problem that mercury in the mercury alloy of the ribbon is likely to be deposited due to the heat of the welding and the production is not easy. Further, when manufacturing a conventional ribbon-type electrode, a long strip of nickel ribbon with a getter on one side and a mercury alloy attached in a bead shape on the other side is cut into a predetermined width and used. The getter or mercury alloy is often dropped from the ribbon during the cutting process, resulting in waste.
【０００５】[0005]
【発明が解決しようとする課題】本発明は従来のリボン
タイプの電極に対する問題点を解決し上記のような要請
に対応するため、水銀合金の含有水銀量を確保しながら
電極の外径寸法が大きくならず、細径化が容易で、かつ
溶接の熱による水銀合金中の水銀の析出を防止でき製造
が容易な冷陰極蛍光ランプ用電極及びその製造方法を提
供することを目的とする。SUMMARY OF THE INVENTION The present invention solves the problems of the conventional ribbon type electrode and responds to the above-mentioned requirements. Therefore, the outer diameter of the electrode can be increased while ensuring the amount of mercury contained in the mercury alloy. An object of the present invention is to provide an electrode for a cold cathode fluorescent lamp, which does not increase in size, can be easily reduced in diameter, and can be prevented from precipitating mercury in a mercury alloy due to heat of welding, and can be easily manufactured, and a manufacturing method thereof.
【０００６】[0006]
【課題を解決するための手段】上記目的を達成するため
に本発明は、冷陰極蛍光ランプに取付けられる電極であ
って、中空の電極本体と、前記電極本体の内部に挿入さ
れていて金属管内に水銀アマルガムを充填して形成され
た水銀合金部材と、前記電極本体の一端に取付けられた
導入線とを備えて構成されている。In order to achieve the above object, the present invention relates to an electrode to be mounted on a cold cathode fluorescent lamp, which is a hollow electrode body and is inserted into the electrode body so that a metal tube And a lead wire attached to one end of the electrode body.
【０００７】また別の発明において、内面に蛍光膜が形
成されたガラスバルブに取付けられる冷陰極蛍光ランプ
用電極の製造方法であって、中空の電極本体を形成する
ことと、前記電極本体の一端部に導入線を接合すること
と、電極本体の他端部から前記電極本体内に水銀合金部
材を挿入することと、前記電極本体の他端部を縮径する
こととにより構成されている。In another aspect of the present invention, there is provided a method of manufacturing an electrode for a cold cathode fluorescent lamp, which is attached to a glass bulb having a fluorescent film formed on an inner surface thereof, wherein a hollow electrode body is formed, and one end of the electrode body is formed. The lead wire is joined to the portion, the mercury alloy member is inserted into the electrode body from the other end portion of the electrode body, and the other end portion of the electrode body is reduced in diameter.
【０００８】[0008]
【作用】本発明による冷陰極を蛍光ランプのガラス管端
部に封着し、かつガラス管内を真空にする。この後、そ
の電極を高調波誘導電界により外部から加熱する。それ
により、水銀合金が加熱され、水銀蒸気がガラス管内に
放出される。The cold cathode according to the present invention is sealed at the end of the glass tube of the fluorescent lamp, and the inside of the glass tube is evacuated. After that, the electrode is externally heated by the harmonic induction electric field. Thereby, the mercury alloy is heated and mercury vapor is discharged into the glass tube.
【０００９】[0009]
【実施例】以下、本発明の実施例を図面を参照しながら
説明する。Embodiments of the present invention will be described below with reference to the drawings.
【００１０】図１を参照すると、本発明の第１の実施例
にかかる冷陰極蛍光ランプ用電極１が冷陰極蛍光ランプ
Ｌに組み込まれた状態で断面で示されている。この電極
１は内面に蛍光膜が形成されたガラスバルブ２の両端部
に取付けられているが、図１ではその一方のみを示す。
この電極１は、中空の電極本体３と、電極本体３の中に
挿入されている水銀合金部材４と、電極本体３の一端に
接合された導入線５とを備えている。水銀合金部材４は
電極本体３と溶接することなく電極本体３と単に接触し
た状態で電極本体３内に保持されている。Referring to FIG. 1, there is shown a cross-sectional view of a cold cathode fluorescent lamp electrode 1 according to a first embodiment of the present invention assembled in a cold cathode fluorescent lamp L. This electrode 1 is attached to both ends of a glass bulb 2 having a fluorescent film formed on its inner surface, but only one of them is shown in FIG.
The electrode 1 includes a hollow electrode body 3, a mercury alloy member 4 inserted in the electrode body 3, and a lead-in wire 5 joined to one end of the electrode body 3. The mercury alloy member 4 is held in the electrode body 3 in a state of simply contacting the electrode body 3 without being welded to the electrode body 3.
【００１１】電極本体３は本実施例ではほぼコップ状の
形状をしており、一端３１の端面３２が閉鎖されている
一方、他端３３は開口しその辺縁部３４はかしめ又は折
り曲げその他の公知の方法により縮径されている。この
縮径は、電極本体３に水銀合金部材４を挿入した後水銀
合金部材４が一端３１から脱落する事がない程度のもの
にすることが必要である。電極本体３の断面形状は円形
であってもよく又は多角形であってもよい。一端３１の
端面３２には導入線５が溶接されている。後述するよう
に、この端面３２への導入線５の溶接は電極本体３に水
銀合金部材４を挿入する前に行われしかも電極本体への
水銀合金部材の溶接止めが行われないため、当該溶接に
よる熱の影響で水銀合金部材４中の水銀が析出すること
はない。また、導入線５の溶接は必ずしも端面３２にす
る必要はなく、図２に示すように電極本体３の側面に溶
接するようにしてもよい。In this embodiment, the electrode main body 3 has a substantially cup-like shape, and the end face 32 of one end 31 is closed, while the other end 33 is open and its edge 34 is caulked or bent. The diameter is reduced by a known method. This diameter reduction needs to be such that the mercury alloy member 4 does not drop off from the one end 31 after the mercury alloy member 4 is inserted into the electrode body 3. The cross-sectional shape of the electrode body 3 may be circular or polygonal. The lead wire 5 is welded to the end surface 32 of the one end 31. As will be described later, the welding of the lead-in wire 5 to the end face 32 is performed before the mercury alloy member 4 is inserted into the electrode body 3, and the welding of the mercury alloy member to the electrode body is not performed. Mercury in the mercury alloy member 4 does not precipitate due to the influence of heat. Further, the welding of the lead-in wire 5 does not necessarily have to be performed on the end face 32, but may be performed on the side face of the electrode body 3 as shown in FIG.
【００１２】水銀合金部材４は本実施例では全体的にほ
ぼ円筒状であり、ニッケル製の細いパイプ４１内に水銀
アマルガム４２を充填して形成されている。この水銀合
金部材４は市販されているものを所定の長さに切断して
作られる。水銀合金部材４の外面と電極本体３の内面に
は若干の隙間が設けられている。In this embodiment, the mercury alloy member 4 has a substantially cylindrical shape, and is formed by filling a thin pipe 41 made of nickel with a mercury amalgam 42. The mercury alloy member 4 is made by cutting a commercially available product into a predetermined length. A slight gap is provided between the outer surface of the mercury alloy member 4 and the inner surface of the electrode body 3.
【００１３】電極本体３、水銀合金部材４及び導入線５
は後述する方法により相互に組合わされる。Electrode body 3, mercury alloy member 4 and lead-in wire 5
Are combined with each other by the methods described below.
【００１４】図３には、本発明の第２の実施例にかかる
冷陰極蛍光ランプ用電極１'が、図１と同様にガラスバ
ルブ２に取付けられた状態で断面で示されている。本実
施例の電極１'は電極本体３'を除いては第１の実施例の
ものと同じである。従って、第１の実施例と異なる部分
のみ説明する。FIG. 3 is a sectional view showing a cold cathode fluorescent lamp electrode 1'according to the second embodiment of the present invention, which is attached to a glass bulb 2 as in FIG. The electrode 1'of this embodiment is the same as that of the first embodiment except the electrode body 3 '. Therefore, only the part different from the first embodiment will be described.
【００１５】電極本体３'はほぼパイプ状の形状であ
り、一端３１'は第１の実施例とは異なり開口されてい
る。一端３１'の内周の一部には導入線５が溶接されて
いる。第１の実施例の場合と同様に、導入線５の溶接に
ついても電極本体３'内に水銀合金部材４を挿入する前
に行う。導入線５の溶接は、図２の場合と同様に電極本
体３'の側面に溶接するようにしてもよく、導入線を折
曲げることにより水銀合金部材４の脱落防止用のストッ
パーとして機能している（図４）。他端３３'は第１の
実施例と同様に開口しており、その辺縁部３４'はかし
め又は折り曲げその他の公知の方法により縮径されてい
る。同様に、電極本体３'の断面形状は円形のみならず
多角形であってもよい。The electrode body 3'has a substantially pipe-like shape, and one end 31 'is opened unlike the first embodiment. The lead-in wire 5 is welded to a part of the inner circumference of the one end 31 '. Similar to the case of the first embodiment, the welding of the lead-in wire 5 is also performed before the mercury alloy member 4 is inserted into the electrode body 3 '. The introduction wire 5 may be welded to the side surface of the electrode body 3 ′ as in the case of FIG. 2, and by bending the introduction wire, it functions as a stopper for preventing the mercury alloy member 4 from falling off. (Fig. 4). The other end 33 'is opened as in the first embodiment, and its peripheral edge 34' is reduced in diameter by caulking or bending or any other known method. Similarly, the cross-sectional shape of the electrode body 3'may be not only circular but also polygonal.
【００１６】次に、本発明による電極１の製造方法につ
いて図５に基づき説明する。まず、図５（ａ）に示すよ
うに市販品の定尺寸法の金属パイプの３ａを所定の長さ
に切断して電極本体の素材３ｂを作る。この素材３ｂの
一端を閉鎖して端面３２を形成し、導入線５を接合する
ことによりコップ状の電極本体３が作られる。或いは素
材３ｂの一端に導入線５を溶接することによりパイプ状
の電極本体３'が作られる（図５（ｂ））。Next, a method of manufacturing the electrode 1 according to the present invention will be described with reference to FIG. First, as shown in FIG. 5 (a), a commercially available metal pipe 3a having a standard size is cut into a predetermined length to prepare a material 3b for the electrode body. One end of the material 3b is closed to form the end face 32, and the lead-in wire 5 is joined to form the cup-shaped electrode body 3. Alternatively, a pipe-shaped electrode body 3'is made by welding the lead-in wire 5 to one end of the material 3b (Fig. 5 (b)).
【００１７】図５（ｃ）に示すように、ニッケルパイプ
内に水銀アマルガムを充填させた状態で市販されている
水銀合金の素材４ａを所定の長さに切断して水銀合金部
材４を作る。As shown in FIG. 5 (c), a mercury alloy material 4a, which is commercially available with a nickel pipe filled with mercury amalgam, is cut into a predetermined length to form a mercury alloy member 4.
【００１８】この水銀合金部材４を電極本体３、３'の
他端３３、３３'から電極本体内に挿入し（図５
（ｄ））、その後電極本体３、３'の他端の辺縁部３
４、３４'をかしめ又は折曲げ等の公知の方法により縮
径する（図５（ｅ））。それにより、電極１、１'が完
成する。このように、水銀合金部材４は電極本体３と導
入線５との溶接接合後に電極本体３の中空部へ挿入され
る。また、水銀合金部材４は電極本体３と溶接すること
なく電極本体３と単に接触した状態で電極本体３内に保
持される。The mercury alloy member 4 is inserted into the electrode body from the other ends 33, 33 'of the electrode bodies 3, 3' (see FIG. 5).
(D)), and then the edge portion 3 at the other end of the electrode bodies 3, 3 '
The diameter of 4, 34 'is reduced by a known method such as caulking or bending (FIG. 5 (e)). Thereby, the electrodes 1, 1'are completed. In this way, the mercury alloy member 4 is inserted into the hollow portion of the electrode body 3 after welding and joining the electrode body 3 and the lead-in wire 5. Further, the mercury alloy member 4 is held in the electrode body 3 in a state of simply contacting the electrode body 3 without being welded to the electrode body 3.
【００１９】完成された電極１は内面に蛍光膜が形成さ
れたガラスバルブの両端部に、周知の方法でそれぞれ封
入、排気されて最終的に冷陰極蛍光ランプが製造され
る。The completed electrode 1 is sealed and exhausted by a known method at both ends of a glass bulb having a fluorescent film formed on the inner surface, and finally a cold cathode fluorescent lamp is manufactured.
【００２０】[0020]
【発明の効果】本発明の冷陰極蛍光ランプ用電極は、中
空の電極本体の内部に水銀合金部材を挿入し水銀合金部
材を単に電極本体内部で接触した状態で保持するもので
あるから、水銀合金部材を電極本体と溶接する必要がな
い。従って、溶接による熱の影響を受けず水銀アマルガ
ム中の水銀の無駄な析出がなく、電極の組立てが容易で
ある。電極本体は導入線が取り付けられた端部とは反対
側の端部が縮径されているため、水銀合金部材を電極本
体と単に接触させた状態で保持しても水銀合金部材が電
極本体から抜け出ることはない。The electrode for cold cathode fluorescent lamps of the present invention has a structure in which a mercury alloy member is inserted into a hollow electrode body and the mercury alloy member is simply kept in contact with the inside of the electrode body. There is no need to weld the alloy member to the electrode body. Therefore, the influence of heat from welding is not exerted and unnecessary deposition of mercury in the mercury amalgam does not occur, and the electrode can be easily assembled. Since the end of the electrode body on the side opposite to the end to which the lead-in wire is attached is reduced in diameter, the mercury alloy member will not separate from the electrode body even if the mercury alloy member is held in contact with the electrode body. There is no way out.
【００２１】電極本体をコップ状又はパイプ状の形状と
したため、電極本体を市販の金属パイプを切断して形成
することができ製造が容易である。同様に水銀合金部材
もニッケルパイプ内に水銀アマルガムを充填させた状態
で市販されているものを必要長さに切断して形成される
から従来のリボンタイプの電極と比較して外径寸法を大
きくすることなく含有水銀量を確保することができ、冷
陰極蛍光ランプの細径化が容易にできる。Since the electrode body is cup-shaped or pipe-shaped, the electrode body can be formed by cutting a commercially available metal pipe, which facilitates manufacturing. Similarly, the mercury alloy member is formed by cutting a commercially available product with a nickel pipe filled with mercury amalgam into the required length, so the outer diameter size is larger than that of the conventional ribbon type electrode. The amount of mercury contained can be secured without doing so, and the diameter of the cold cathode fluorescent lamp can be easily reduced.
【００２２】更に、製造に際して電極本体と導入線との
接合及び電極本体と端面部材との接合を水銀合金部材の
挿入前に行うようにしたため、水銀合金部材が電極本体
と導入線との溶接の際の熱の影響を受けることもない。Further, since the joining of the electrode body and the lead wire and the joining of the electrode body and the end face member are performed before the insertion of the mercury alloy member during the manufacturing, the mercury alloy member is welded to the electrode body and the lead wire. It is not affected by the heat at the time.
【図１】本発明の第１の実施例による冷陰極蛍光ランプ
用電極を冷陰極蛍光ランプに組み込んだ状態で示した断
面図である。FIG. 1 is a cross-sectional view showing a state in which a cold cathode fluorescent lamp electrode according to a first embodiment of the present invention is incorporated in a cold cathode fluorescent lamp.
【図２】図１において導入線の取付け位置を変えて示し
た図である。FIG. 2 is a diagram showing the installation line of FIG. 1 with a different attachment position.
【図３】本発明の第２の実施例による冷陰極蛍光ランプ
用電極を冷陰極蛍光ランプに組み込んだ状態で示した断
面図である。FIG. 3 is a cross-sectional view showing a cold cathode fluorescent lamp electrode according to a second embodiment of the present invention, which is incorporated in a cold cathode fluorescent lamp.
【図４】図３において導入線の取付け位置を変えて示し
た図である。FIG. 4 is a diagram showing the installation position of the lead-in wire changed in FIG.
【図５】冷陰極蛍光ランプ用電極の製造方法を工程順に
示した図である。FIG. 5 is a diagram showing a method of manufacturing an electrode for a cold cathode fluorescent lamp in the order of steps.
【図６】従来の冷陰極蛍光ランプ用電極を冷陰極蛍光ラ
ンプに組み込んだ状態で示した断面図である。FIG. 6 is a cross-sectional view showing a conventional cold cathode fluorescent lamp electrode incorporated in a cold cathode fluorescent lamp.
１：冷陰極蛍光ランプ用電極 ３：電極本体 ４：水銀合金部材 ５：導入線 ３１：一端 ３３：他端 1: Electrode for cold cathode fluorescent lamp 3: Electrode body 4: Mercury alloy member 5: Lead wire 31: One end 33: Other end
Claims (4)
って、 中空の電極本体と、 前記電極本体の内部に挿入されていて金属管内に水銀ア
マルガムを充填して形成された水銀合金部材と、 前記電極本体の一端に取付けられた導入線と、を備えて
いることを特徴とする冷陰極蛍光ランプ用電極。1. An electrode attached to a cold cathode fluorescent lamp, comprising: a hollow electrode body; and a mercury alloy member that is inserted into the electrode body and is formed by filling a metal tube with mercury amalgam. A lead wire attached to one end of the electrode body, and an electrode for a cold cathode fluorescent lamp.
入線が取り付けられた端部とは反対側の端部が縮径され
ていて電極本体からの前記水銀合金部材の脱落を防止す
ることを特徴とする請求項１記載の冷陰極蛍光ランプ用
電極。2. The electrode main body has a cup shape, and the end opposite to the end to which the lead-in wire is attached is reduced in diameter to prevent the mercury alloy member from falling off from the electrode main body. The electrode for a cold cathode fluorescent lamp according to claim 1, wherein
極本体の一端にストッパ部材が接合されて前記一端から
の水銀合金部材の脱落を防止し、他端を縮径させて電極
本体からの水銀合金部材の脱落を防止することを特徴と
する請求項１記載の冷陰極蛍光ランプ用電極。3. The electrode main body has a pipe shape, and a stopper member is joined to one end of the electrode main body to prevent the mercury alloy member from dropping off from the one end, and the other end is reduced in diameter to make the electrode main body. The electrode for a cold cathode fluorescent lamp according to claim 1, characterized in that the mercury alloy member is prevented from falling out of the electrode.
取付けられる冷陰極蛍光ランプ用電極の製造方法であっ
て、 中空の電極本体を形成することと、 前記電極本体の一端部に導入線を接合することと、 電極本体の他端部から前記電極本体内に水銀合金部材を
挿入することと、 前記電極本体の他端部を縮径することとにより構成され
る冷陰極蛍光ランプ用電極の製造方法。4. A method of manufacturing an electrode for a cold cathode fluorescent lamp, which is attached to a glass bulb having a fluorescent film formed on an inner surface thereof, wherein a hollow electrode body is formed, and a lead wire is provided at one end of the electrode body. An electrode for a cold-cathode fluorescent lamp, which is configured by joining the two, joining a mercury alloy member into the electrode body from the other end of the electrode body, and reducing the other end of the electrode body. Manufacturing method.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6506194A JPH07282776A (en) | 1994-04-01 | 1994-04-01 | Electrode for cold cathode fluorescent lamp and manufacture thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6506194A JPH07282776A (en) | 1994-04-01 | 1994-04-01 | Electrode for cold cathode fluorescent lamp and manufacture thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH07282776A true JPH07282776A (en) | 1995-10-27 |
Family
ID=13276072
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6506194A Pending JPH07282776A (en) | 1994-04-01 | 1994-04-01 | Electrode for cold cathode fluorescent lamp and manufacture thereof |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH07282776A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6191826A (en) * | 1984-10-12 | 1986-05-09 | Toshiba Corp | Method for manufacturing high pressure sodium vapor lamp |
| JPH03171529A (en) * | 1989-11-29 | 1991-07-25 | Matsushita Electron Corp | Manufacture of fluorescent lamp |
| JPH03280353A (en) * | 1990-03-28 | 1991-12-11 | Toshiba Lighting & Technol Corp | Cold cathode discharge lamp |
| JPH05258717A (en) * | 1992-03-12 | 1993-10-08 | Toshiba Lighting & Technol Corp | Fluorescent lamp and manufacture thereof |
| JPH06251746A (en) * | 1993-02-25 | 1994-09-09 | Harrison Denki Kk | Cold cathode low pressure discharge lamp |
-
1994
- 1994-04-01 JP JP6506194A patent/JPH07282776A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6191826A (en) * | 1984-10-12 | 1986-05-09 | Toshiba Corp | Method for manufacturing high pressure sodium vapor lamp |
| JPH03171529A (en) * | 1989-11-29 | 1991-07-25 | Matsushita Electron Corp | Manufacture of fluorescent lamp |
| JPH03280353A (en) * | 1990-03-28 | 1991-12-11 | Toshiba Lighting & Technol Corp | Cold cathode discharge lamp |
| JPH05258717A (en) * | 1992-03-12 | 1993-10-08 | Toshiba Lighting & Technol Corp | Fluorescent lamp and manufacture thereof |
| JPH06251746A (en) * | 1993-02-25 | 1994-09-09 | Harrison Denki Kk | Cold cathode low pressure discharge lamp |
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