JPS641734Y2 - - Google Patents
Info
- Publication number
- JPS641734Y2 JPS641734Y2 JP1983025065U JP2506583U JPS641734Y2 JP S641734 Y2 JPS641734 Y2 JP S641734Y2 JP 1983025065 U JP1983025065 U JP 1983025065U JP 2506583 U JP2506583 U JP 2506583U JP S641734 Y2 JPS641734 Y2 JP S641734Y2
- Authority
- JP
- Japan
- Prior art keywords
- discharge
- hollow cylinder
- lamp
- cold cathode
- electrode
- 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
- 239000000945 filler Substances 0.000 claims description 13
- 239000000463 material Substances 0.000 claims description 12
- 229910052751 metal Inorganic materials 0.000 claims description 10
- 239000002184 metal Substances 0.000 claims description 10
- 229910000645 Hg alloy Inorganic materials 0.000 claims description 7
- 238000003860 storage Methods 0.000 description 12
- 230000002159 abnormal effect Effects 0.000 description 9
- 239000002775 capsule Substances 0.000 description 7
- 230000000694 effects Effects 0.000 description 6
- 229910052753 mercury Inorganic materials 0.000 description 6
- 150000002739 metals Chemical class 0.000 description 6
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 description 5
- 230000008859 change Effects 0.000 description 3
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 229910052786 argon Inorganic materials 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 229910000765 intermetallic Inorganic materials 0.000 description 1
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000004044 response Effects 0.000 description 1
Description
【考案の詳細な説明】
〔考案の技術分野〕
本考案は冷陰極放電ランプに係り、特にその中
空円筒状放電電極の構造の改良に関する。[Detailed Description of the Invention] [Technical Field of the Invention] The present invention relates to a cold cathode discharge lamp, and particularly to an improvement in the structure of a hollow cylindrical discharge electrode thereof.
近年、複写機やフアクシミリ装置に代表される
事務機器用光源、表示用あるいは表示素子の背面
照明用光源などに冷陰極放電ランプが使用され、
さらにその用途が拡大され、機能の多様化が進ん
でいる。このように冷陰極放電ランプの用途が拡
がることにより、使用者側の要望が酷しくなり、
高輝度、長寿命、発光長の拡大、ランプ直径の小
径化などの要求が出されている。これらの要望に
対応して電極の構造も種々の様式のものが検討さ
れている。
In recent years, cold cathode discharge lamps have been used as light sources for office equipment such as copying machines and facsimile machines, and as light sources for displays and backlighting of display elements.
Furthermore, its uses are expanding and its functions are becoming more diverse. As the applications of cold cathode discharge lamps expand in this way, the demands of users become more demanding.
There are demands for high brightness, long life, increased emission length, and smaller lamp diameter. In response to these demands, various types of electrode structures are being considered.
上記の要望のうち、冷陰極放電ランプを高輝度
化するためには、放電電流を増加させることが考
えられ、このためには放電電極の表面積を増大さ
せる必要があるが、製造時の作業性がよく、しか
も上記の機能を有する放電電極の冷陰極放電ラン
プを得ることはきわめて難しいという問題があつ
た。 Among the above demands, in order to increase the brightness of cold cathode discharge lamps, it is possible to increase the discharge current, and for this it is necessary to increase the surface area of the discharge electrode, but it is easy to work during manufacturing. However, there was a problem in that it was extremely difficult to obtain a cold cathode discharge lamp with a discharge electrode having good performance and the above-mentioned functions.
上記の問題点に対しては、実開昭55−106960号
明細書の冷陰極放電ランプ（以下従来例）に見ら
れる通り、中空円筒状の放電電極を具備し、その
中空円筒に放電側端面を内側に折曲し、さらにも
う一度中空円筒面と平行な円筒面を形成するよう
に折曲させて、その折面内側にゲツタ材などを配
置したものが考案されている。 To solve the above problem, as seen in the cold cathode discharge lamp of Utility Model Application No. 55-106960 (hereinafter referred to as conventional example), a hollow cylindrical discharge electrode is provided, and the discharge side end face of the hollow cylinder is provided with a hollow cylindrical discharge electrode. A method has been devised in which the hollow cylinder is bent inward, then bent again to form a cylindrical surface parallel to the hollow cylindrical surface, and a getter material or the like is placed inside the folded surface.
しかし、このような構造の冷陰極放電ランプで
は、その折曲部の端面から異状グロー放電が発生
する（以下エツジ効果という）のをある程度抑え
る機能は有しているものの、電流が増加してくる
と、この端面からの放電が、通常の正規グロー放
電から異常グロー放電へ移つてしまうという問題
があつた。 However, although cold cathode discharge lamps with such a structure have a function of suppressing to some extent the occurrence of abnormal glow discharge from the end face of the bent portion (hereinafter referred to as the edge effect), the current increases. However, there was a problem in that the discharge from this end surface shifted from a normal normal glow discharge to an abnormal glow discharge.
本考案は中空円筒電極を用いた冷陰極放電ラン
プにおいて、エツジ効果の発生を抑制した冷陰極
放電ランプを提供することを目的とする。
An object of the present invention is to provide a cold cathode discharge lamp using a hollow cylindrical electrode in which the occurrence of edge effects is suppressed.
本考案は両端に放電電極を有する透光性外囲器
内に易放電気体を具備するものにおいて、上記放
電電極は中空円筒状であり、その放電側に上記中
空円筒と直交してその内方に延在し、さらに中空
円筒軸と平行に放電側の端部と逆側に折曲され、
さらに中空円筒壁方向に折曲して形成された筐状
収納部材が放電電極と一体に設けられており、上
記筐状収納部材にゲツタ材および水銀と他の金属
との合金、またはゲツタ材からなる充填材が内蔵
されていることを特徴とする冷陰極放電ランプで
ある。
The present invention comprises an easily dischargeable electric body in a translucent envelope having discharge electrodes at both ends, and the discharge electrode has a hollow cylindrical shape, and the discharge side thereof is perpendicular to the hollow cylinder and the inside thereof is , and is further bent parallel to the hollow cylinder axis to the opposite end of the discharge side,
Further, a casing-shaped storage member formed by bending in the direction of the hollow cylindrical wall is provided integrally with the discharge electrode, and the casing-shaped storage member is made of getta material, an alloy of mercury and other metals, or gettuta material. This is a cold cathode discharge lamp characterized by having a built-in filler.
本考案の詳細を添付図を参照して説明する。 The details of the present invention will be explained with reference to the accompanying drawings.
第１図は本考案一実施例の冷陰極放電ランプの
一部を切欠して示す斜視図であつて、透光性外囲
器１の両端部に中空円筒状の放電電極を有するス
テムが封着されている。第１図においては透光性
外囲器１の一方の端部を示しており、２は中空円
筒状の放電電極で、上記中空円筒状放電電極２は
金属プレートの中空円筒３に設けられたスリツト
１６よりをステム４に植立された内部導入線５を
（第１図においては一方の内部導入線のみを図示
し、他方の内部導入線は図示してない。）中空円
筒３の外面に導き電気溶接することによつて支持
されている。この詳細については後述する。５′
は内部導入線５と導電的に接続され、透光性外囲
器１外へ気密に導出されるリード線である。上記
放電電極２の中空円筒３は図示のように、その放
電側Ａに筐状収納部材６が中空円筒の放電電極２
と一体に設けられており、上記筐状収納部材６は
中空円筒３の放電側Ａの端部を中空円筒３と直交
して内方に延在してなる正面部７と、これに連設
され中空円筒３の軸と平行に放電側Ａの端部と逆
側に折曲されてなる内側面部８と、さらにこれに
連設され中空円筒３の内壁方向に折曲された底面
部９とが設けられている。そうして、上記中空円
筒３の正面部７、内側面部８および底面部９に包
囲された空間に水銀と他の金属との合金、たとえ
ばTi3Hgのような金属間化合物と、たとえば
Zr3Al2のようなゲツタ材との混合物などからなる
充填材１０が充填されたカプセル１１が内蔵され
ている。筐状収納部材６の上記底面部９の端部１
２は中空円筒３の内壁との間に間隙１３を保持し
ており、上記間隙１３から上記カプセル１１内の
充填材１０が放電側Ａと逆側に向つて露出されて
いる。ステム４の排気管１４から排気したのち外
囲器１内にアルゴンなどの易放電気体を所定圧封
入して図示の封緘端１５を封緘する。この冷陰極
放電ランプを高周波ボンバーダによつて加熱する
と放電電極２の金属部分が高周波によつて加熱さ
れてカプセル１１内に収納された充填材１０の
Ti3HgとZr3Al2とが加熱され、前者はランプ内に
水銀を供給し、後者はゲツタとしての働きをす
る。 FIG. 1 is a partially cutaway perspective view of a cold cathode discharge lamp according to an embodiment of the present invention, in which a stem having hollow cylindrical discharge electrodes is sealed at both ends of a translucent envelope 1. It is worn. In FIG. 1, one end of the transparent envelope 1 is shown, and 2 is a hollow cylindrical discharge electrode, and the hollow cylindrical discharge electrode 2 is provided in a hollow cylinder 3 of a metal plate. The internal lead-in wire 5, which is inserted into the stem 4 through the slit 16 (in FIG. 1, only one internal lead-in wire is shown and the other internal lead-in wire is not shown) is attached to the outer surface of the hollow cylinder 3. Supported by guided electric welding. The details will be described later. 5′
is a lead wire that is electrically conductively connected to the internal lead-in wire 5 and led out to the outside of the translucent envelope 1 in an airtight manner. As shown in the figure, the hollow cylinder 3 of the discharge electrode 2 has a housing-like housing member 6 on its discharge side A.
The casing-like storage member 6 is connected to a front part 7 formed by extending the end of the discharge side A of the hollow cylinder 3 inwardly and perpendicularly to the hollow cylinder 3. an inner surface portion 8 which is bent parallel to the axis of the hollow cylinder 3 and opposite to the end of the discharge side A; and a bottom surface portion 9 which is connected to this and is bent toward the inner wall of the hollow cylinder 3. is provided. Then, an alloy of mercury and other metals, such as an intermetallic compound such as Ti 3 Hg, and
A capsule 11 is filled with a filler 10 made of a mixture with a getter material such as Zr 3 Al 2 . End portion 1 of the bottom portion 9 of the housing-like storage member 6
2 maintains a gap 13 between it and the inner wall of the hollow cylinder 3, and the filler 10 in the capsule 11 is exposed from the gap 13 toward the side opposite to the discharge side A. After exhausting the air from the exhaust pipe 14 of the stem 4, an easily dischargeable electrical substance such as argon is sealed in the envelope 1 at a predetermined pressure to seal the sealed end 15 shown in the figure. When this cold cathode discharge lamp is heated by a high frequency bombarder, the metal part of the discharge electrode 2 is heated by the high frequency, and the filling material 10 housed in the capsule 11 is heated.
Ti 3 Hg and Zr 3 Al 2 are heated, the former supplying mercury into the lamp and the latter acting as a getter.
上記構成の冷陰極放電ランプでは底面部９の端
部１２が内側面部８よりも内側に位置している。
このためこの端部からの異常グロー放電は非常に
発生しにくい。これに対し従来のように底面部９
がない場合には、内側面部８の端部が異常グロー
放電を生ずる電極となり易い。この差を定量的に
測定するために従来ランプと本考案のランプとで
ランプ電流を増加させていつた場合のランプ電圧
の値の変化を測定してみた。その結果を第２図に
示す。ここで両者の電極表面積は条件を同じくす
るため双方200mm2と等しくしてある。 In the cold cathode discharge lamp configured as described above, the end portion 12 of the bottom surface portion 9 is located inside the inner surface portion 8 .
Therefore, abnormal glow discharge from this end is very unlikely to occur. In contrast, the bottom part 9
In the absence of such an electrode, the end of the inner side surface 8 tends to become an electrode that causes abnormal glow discharge. In order to quantitatively measure this difference, we measured the change in lamp voltage value when the lamp current was increased between the conventional lamp and the lamp of the present invention. The results are shown in FIG. Here, the surface areas of both electrodes are set equal to 200 mm 2 to keep the conditions the same.
この結果から従来ランプの場合ランプ電流が
8mAを前後にしてこれ以上増えると、特性が変
つており、この変化はエツジ効果による異常グロ
ー放電が発生した結果である。これに対して本考
案のランプはランプ電流が15mA前後まで異常グ
ロー放電が生じないことがわかる。このように本
願ランプは従来ランプに比べて異常グローが生じ
にくいといえる。これは、底面部９が存在するこ
とにより、その端面１２が放電空間から遠ざかる
ためである。 This result shows that in the case of conventional lamps, the lamp current is
When the current increases beyond 8 mA, the characteristics change, and this change is the result of an abnormal glow discharge caused by the edge effect. In contrast, it can be seen that in the lamp of the present invention, abnormal glow discharge does not occur until the lamp current is around 15 mA. As described above, it can be said that the lamp of the present invention is less likely to cause abnormal glow than conventional lamps. This is because the presence of the bottom surface portion 9 causes its end surface 12 to move away from the discharge space.
また、放電電極２と他方の図示しない放電電極
との距離を長くして放電長、すなわち発光長を極
力長くするためには、放電電極２を形成する中空
円筒３に設けられているスリツト１６の長さを変
えることによつて内部導入線５と中空円筒３との
溶接位置を調整できるので、上記発光長は所望の
長さに調整することができる。また筐状収納部材
６は充填材１０のカプセル１１に嵌装したのちに
底部をかしめて底面部９を形成することによつ
て、カプセル１１または充填材１０が筐状収納部
材６から逸脱することはない。 In addition, in order to increase the distance between the discharge electrode 2 and the other discharge electrode (not shown) to maximize the discharge length, that is, the light emission length, the slit 16 provided in the hollow cylinder 3 forming the discharge electrode 2 must be By changing the length, the welding position between the internal lead-in wire 5 and the hollow cylinder 3 can be adjusted, so the light emission length can be adjusted to a desired length. Furthermore, by fitting the casing-like storage member 6 into the capsule 11 of the filler 10 and then caulking the bottom part to form the bottom surface part 9, the capsule 11 or the filler 10 can be prevented from escaping from the casing-like storage member 6. There isn't.
さらに上記カプセル１１を使用せず充填材１０
を固めた錠剤状のものを直接筐状収納部材６に収
納してもよい。 Furthermore, without using the capsule 11, the filler 10
A hardened tablet-like product may be directly stored in the casing-like storage member 6.
また、上記実施例で示した充填材１０を水銀と
他の金属との合金およびゲツタ材の混合物に限ら
ず、水銀を透光性外囲器内に滴下充填する場合に
はゲツタ材のみでもよいことはいうまでもない。
さらにまた、筐状収納部材に充填する充填材は必
要水銀量が多い場合には、上記カプセル１１を下
向き、すなわち放電側と逆側に２段または複数段
に積層してもよく、この場合筐状収納部材の内側
面部の長さを充填材の寸法に合わせて長くするこ
とが必要である。 In addition, the filler 10 shown in the above embodiment is not limited to a mixture of an alloy of mercury and other metals and a getter material, but may be only a getter material when mercury is dripped and filled into a translucent envelope. Needless to say.
Furthermore, if the amount of mercury required for filling the casing-like storage member is large, the capsules 11 may be stacked in two or multiple tiers facing downwards, that is, on the opposite side to the discharge side. It is necessary to increase the length of the inner side surface of the shaped storage member to match the size of the filler.
以上説明したように本考案冷陰極放電ランプに
使用される放電電極は前記高周波ボンバーダによ
る高周波加熱により筐状収納部材内の充填材のゲ
ツタが昇散するから上記筐状収納部材の間隙１３
が放電側と逆側にあつても十分なゲツタ効果を発
揮し、さらに水銀と他の金属との合金から供給さ
れる水銀も上記高周波加熱時に外囲器内に十分供
給されるから放電開始がおくれることがないばか
りでなく、放電面には金属の中空円筒状放電電極
のみが露呈されているから放電時に他の物質、た
とえば充填材などの放電路側に逸出して外囲器な
どの黒化を発生させるような問題の発生は全くな
く、良好な特性を有する冷陰極放電ランプを得る
ことができる。さらに底面部９が存在するため端
部からの異常グロー放電を抑制することができ
る。 As explained above, in the discharge electrode used in the cold cathode discharge lamp of the present invention, the particles of the filler in the housing member are dispersed due to high frequency heating by the high frequency bombarder.
Even if the mercury is on the opposite side to the discharge side, a sufficient getter effect is exerted, and mercury supplied from the alloy of mercury and other metals is also sufficiently supplied into the envelope during the high-frequency heating described above, so that the discharge cannot start. Not only will there be no delay, but since only the metal hollow cylindrical discharge electrode is exposed on the discharge surface, other substances, such as fillers, may escape to the discharge path side during discharge, causing black spots such as the envelope. A cold cathode discharge lamp having good characteristics can be obtained without any problems such as oxidation. Furthermore, since the bottom surface portion 9 exists, abnormal glow discharge from the end portions can be suppressed.
本考案は中空円筒状の放電電極の放電側に中空
円筒と直交して内方に延在し、さらに中空円筒軸
と平行に放電側の端部と逆側に折曲され、再び折
曲されて中空円筒壁に向う筐状収納部材が放電電
極と一体に設けられており、上記筐状収納部材に
ゲツタ材および水銀と他の金属との合金、または
ゲツタ材が充填内蔵されていることを特徴とする
冷陰極放電ランプであるから製造時の作業性がよ
く容易に製造が可能であり、しかも冷陰極放電ラ
ンプの高輝度化、長寿命化ができ、そのために従
来品に発生していたゲツタ材や水銀と他の金属と
の合金などの充填物の逸出が少なく、したがつて
外囲器の汚れが少なく、さらにエツジ効果による
異常グロー放電の発生を抑えた放電特性が良好な
改良された冷陰極放電ランプを提供できるという
効果がある。
The present invention consists of a hollow cylindrical discharge electrode that extends inward at right angles to the discharge side of the hollow cylinder, is bent parallel to the axis of the hollow cylinder to the opposite side of the discharge side, and is then bent again. A housing-like storage member facing the hollow cylindrical wall is provided integrally with the discharge electrode, and the housing-like storage member is filled with a getter material, an alloy of mercury and other metals, or a getter material. Because it is a cold cathode discharge lamp, it has good workability during manufacturing and can be easily manufactured.Furthermore, the cold cathode discharge lamp can have high brightness and a long life, which causes problems that occur with conventional products. Improved discharge characteristics with less escape of fillers such as getter material and alloys of mercury and other metals, resulting in less contamination of the envelope and better discharge characteristics that suppress the occurrence of abnormal glow discharge due to edge effects. This has the advantage that a cold cathode discharge lamp can be provided.
第１図は本考案の冷陰極放電ランプの一部を切
欠して示す斜視図、第２図は従来ランプと本願考
案のランプの放電特性を比較した放電特性図であ
る。
１……透光性外囲器、２……放電電極、３……
中空円筒、６……筐状収納部材、１０……充填
材、１３……間隙。
FIG. 1 is a partially cutaway perspective view of the cold cathode discharge lamp of the present invention, and FIG. 2 is a discharge characteristic diagram comparing the discharge characteristics of a conventional lamp and a lamp of the present invention. 1...Transparent envelope, 2...Discharge electrode, 3...
Hollow cylinder, 6... Housing-like storage member, 10... Filler, 13... Gap.
Claims (1)
電気体を具備するものにおいて、上記放電電極は
中空円筒状であり、その放電側に上記中空円筒と
直交してその内方に延在し、さらに中空円筒軸と
平行に放電側の端部と逆側に折曲され、さらに中
空円筒壁方向に折曲されて形成された筐状収納部
材が放電電極と一体に設けられており、上記筐状
収納部材にゲツタ材および水銀と他の金属との合
金、またはゲツタ材からなる充填材が充填内蔵さ
れていることを特徴とする冷陰極放電ランプ。 In the device comprising an easily dischargeable electric body in a transparent envelope having discharge electrodes at both ends, the discharge electrode has a hollow cylindrical shape, and extends inward from the hollow cylinder at right angles to the discharge side thereof. Further, a housing-like housing member is provided integrally with the discharge electrode, and is formed by being bent parallel to the hollow cylinder axis to the opposite side of the discharge side end, and further bent in the direction of the hollow cylinder wall. A cold cathode discharge lamp characterized in that the housing member is filled with a getter material and a filler made of an alloy of mercury and another metal, or a getter material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2506583U JPS59132156U (en) | 1983-02-24 | 1983-02-24 | cold cathode discharge lamp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2506583U JPS59132156U (en) | 1983-02-24 | 1983-02-24 | cold cathode discharge lamp |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS59132156U JPS59132156U (en) | 1984-09-04 |
| JPS641734Y2 true JPS641734Y2 (en) | 1989-01-17 |
Family
ID=30156069
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2506583U Granted JPS59132156U (en) | 1983-02-24 | 1983-02-24 | cold cathode discharge lamp |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS59132156U (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6191849A (en) * | 1984-10-11 | 1986-05-09 | West Electric Co Ltd | Hermetic sealing mercury sealed fluorescent discharge tube |
| JP4760964B2 (en) * | 2009-07-02 | 2011-08-31 | ウシオ電機株式会社 | Short arc type discharge lamp |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS55106960U (en) * | 1979-01-22 | 1980-07-26 | ||
| JPS56127666U (en) * | 1980-02-29 | 1981-09-29 |
-
1983
- 1983-02-24 JP JP2506583U patent/JPS59132156U/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS59132156U (en) | 1984-09-04 |
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