JP2001250511A - Rare-gas discharge lamp - Google Patents
Rare-gas discharge lampInfo
- Publication number
- JP2001250511A JP2001250511A JP2000063273A JP2000063273A JP2001250511A JP 2001250511 A JP2001250511 A JP 2001250511A JP 2000063273 A JP2000063273 A JP 2000063273A JP 2000063273 A JP2000063273 A JP 2000063273A JP 2001250511 A JP2001250511 A JP 2001250511A
- Authority
- JP
- Japan
- Prior art keywords
- envelope
- rare gas
- discharge lamp
- gas discharge
- external electrodes
- 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.)
- Granted
Links
Landscapes
- Vessels And Coating Films For Discharge Lamps (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】この発明は希ガス放電灯に関
し、特にガラスバルブの内面にアパーチャ部を有する発
光層を形成すると共に、外周面に一対の帯状の外部電極
を配置した希ガス放電灯において、希ガス放電灯に照射
される外来光が乏しい環境下での始動特性の改良に関す
る。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rare gas discharge lamp, and more particularly to a rare gas discharge lamp in which a light emitting layer having an aperture is formed on the inner surface of a glass bulb and a pair of strip-shaped external electrodes are arranged on the outer surface. The present invention relates to improvement of starting characteristics in an environment where external light irradiated to a rare gas discharge lamp is scarce.
【０００２】[0002]
【従来の技術】本出願人は、先に、図１４〜図１６に示
す希ガス放電灯Ｌを提案した。同図において、１は例え
ばガラスバルブにて密閉状に構成された直管状の外囲器
であって、その内面には希土類蛍光体，ハロリン酸塩蛍
光体などの１種又は２種以上の蛍光体を含む発光層２が
形成されている。特に、この発光層２には所定の開口角
を有するアパーチャ部（発光層２の未形成部）２ａがほ
ぼ全長に亘って形成されている。そして、外囲器１の封
着構造はガラスバルブの所定部分を加熱しながら縮径加
工し溶断して封着するいわゆるトップシールにて構成さ
れているが、例えばガラスバルブの端部にディスク状の
封着ガラス板を封着して構成することもできる。2. Description of the Related Art The present applicant has previously proposed a rare gas discharge lamp L shown in FIGS. In FIG. 1, reference numeral 1 denotes a straight tubular envelope which is hermetically sealed by a glass bulb, for example, and one or two or more kinds of fluorescent materials such as a rare earth phosphor and a halophosphate phosphor are provided on the inner surface thereof. A light emitting layer 2 including a body is formed. In particular, the light emitting layer 2 is formed with an aperture portion (a portion where the light emitting layer 2 is not formed) 2a having a predetermined opening angle over substantially the entire length. The sealing structure of the envelope 1 is constituted by a so-called top seal in which a predetermined portion of the glass bulb is reduced in diameter while being heated and melted and sealed. Can be configured by sealing the sealing glass plate.
【０００３】尚、この外囲器１の内部空間には水銀など
の金属蒸気を含まないキセノン，クリプトン，ネオン，
ヘリウムなどの希ガスが単一又は混合して所定量封入さ
れているが、キセノンを主成分とする希ガスの封入が望
ましい。[0003] The interior space of the envelope 1 contains xenon, krypton, neon, and the like which do not contain metal vapor such as mercury.
A predetermined amount of rare gas such as helium is sealed alone or mixed, but it is preferable to fill a rare gas containing xenon as a main component.
【０００４】この外囲器１の外周面にはシート構体３が
密着するように巻回されている。このシート構体３は、
例えば外囲器１の全長とほぼ同程度の長さを有する絶縁
性の透光性シート４と、この透光性シート４の一方の面
に互いに所定の間隔だけ離隔配置して接着された金属部
材よりなる一対の帯状の外部電極５，６と、この外部電
極５，６の端部から導出された端子５１，６１と、透光
性シート４の一方の面に形成された接着層９とから構成
されている。[0004] A sheet structure 3 is wound around the outer peripheral surface of the envelope 1 so as to be in close contact therewith. This seat structure 3
For example, an insulative translucent sheet 4 having substantially the same length as the entire length of the envelope 1 and a metal bonded to one surface of the translucent sheet 4 at a predetermined interval from each other. A pair of strip-shaped external electrodes 5 and 6 made of members, terminals 51 and 61 extending from ends of the external electrodes 5 and 6, and an adhesive layer 9 formed on one surface of the translucent sheet 4. It is composed of
【０００５】特に、シート構体３の外囲器１への装着状
態において、外部電極５，６の一端５ａ，６ａの間には
第１の開口部７が、外部電極５，６の他端５ｂ，６ｂの
間には第２の開口部８がそれぞれ形成されており、発光
層２からの光は主としてアパーチャ部２ａから第１の開
口部７を介して外部に放出される。そして、第２の開口
部８において、透光性シート４の一方の端部４ａには他
方の端部４ｂが重ね合わせた上で接着されている。この
シート構体３において、透光性シート４は、例えばポリ
エチレンテレフタレート（ＰＥＴ）樹脂が好適するが、
ポリエステル樹脂など他の樹脂も利用できる。又、外部
電極５，６は、例えばアルミニウム箔が好適するが、導
電性に優れた金属部材であれば、ニッケル，銀などのよ
うに他の金属部材も利用できる。さらに、接着層９とし
てはシリコーン系接着剤が好適するが、アクリル系接着
剤など他の接着剤も使用できる。In particular, when the seat structure 3 is mounted on the envelope 1, a first opening 7 is provided between the one ends 5a and 6a of the external electrodes 5 and 6, and the other end 5b of the external electrodes 5 and 6 is provided. , 6b are formed respectively, and the light from the light emitting layer 2 is mainly emitted from the aperture 2a to the outside through the first opening 7. In the second opening 8, one end 4a of the translucent sheet 4 is bonded to the other end 4b after being overlapped. In the sheet structure 3, the light-transmitting sheet 4 is preferably made of, for example, polyethylene terephthalate (PET) resin.
Other resins such as polyester resins can also be used. The external electrodes 5 and 6 are preferably made of, for example, aluminum foil, but other metal members such as nickel and silver can be used as long as the metal members are excellent in conductivity. Further, a silicone adhesive is suitable for the adhesive layer 9, but other adhesives such as an acrylic adhesive can also be used.
【０００６】この希ガス放電灯Ｌは、例えば次のように
製造される。まず、例えば青色領域，緑色領域，赤色領
域にそれぞれ発光スペクトルを有する蛍光体を含む蛍光
体塗布液をガラスバルブよりなる外囲器１の内面に塗布
・乾燥し、焼成することにより発光層２が形成される。
次に、図示しないスクレーパを利用して発光層２の一部
を強制的に所定の開口角で剥離・除去することにより、
アパーチャ部２ａが形成される。次に、この外囲器１を
密閉状に構成し、かつ内部空間にキセノンなどの希ガス
を所定量封入する。The rare gas discharge lamp L is manufactured, for example, as follows. First, for example, a phosphor coating solution containing a phosphor having an emission spectrum in each of a blue region, a green region, and a red region is applied to the inner surface of the envelope 1 made of a glass bulb, dried, and fired, so that the light emitting layer 2 is formed. It is formed.
Next, a part of the light emitting layer 2 is forcibly peeled and removed at a predetermined opening angle using a scraper (not shown),
An aperture 2a is formed. Next, the envelope 1 is formed in a sealed state, and a predetermined amount of a rare gas such as xenon is sealed in the internal space.
【０００７】次に、図１５〜図１６に示すように、透光
性シート４の所定部分に一対の外部電極５，６を離隔し
て配置すると共に、外部電極５，６の端部から端子５
１，６１を導出し、かつ透光性シート４及び外部電極
５，６に接着層９を形成してシート構体３を構成する。
次に、図１７に示すように、シート構体３を展開した状
態で例えば組み立てステージ１０に載置する。引き続
き、外囲器１をシート構体３の透光性シート４の一端４
ａに、外囲器１の長手方向が外部電極５，６の長手方向
に沿うように（平行となるように）位置させる。この状
態で、外囲器１に従動ローラ１１，１１を、外囲器１が
透光性シート４に若干押し付けられるように配置する。
この状態で、ステージ１０を若干Ｍ方向に移動させた
後、Ｎ方向に移動させる。これによって、シート構体３
は、図１４に示すように、外囲器１の外周面に巻回され
る上、透光性シート４の一端４ａに他端４ｂが重ね合わ
され、接着層９によって接着されて希ガス放電灯Ｌが完
成する。Next, as shown in FIGS. 15 and 16, a pair of external electrodes 5 and 6 are arranged at predetermined portions of the light-transmitting sheet 4 while being separated from each other. 5
The sheet structure 3 is formed by deriving 1 and 61 and forming the adhesive layer 9 on the translucent sheet 4 and the external electrodes 5 and 6.
Next, as shown in FIG. 17, the sheet structure 3 is placed on, for example, an assembly stage 10 in a spread state. Subsequently, the envelope 1 is connected to one end 4 of the translucent sheet 4 of the sheet structure 3.
a, the envelope 1 is positioned so that the longitudinal direction of the envelope 1 is along (parallel to) the longitudinal direction of the external electrodes 5 and 6. In this state, the driven rollers 11, 11 are arranged so that the envelope 1 is slightly pressed against the translucent sheet 4.
In this state, the stage 10 is slightly moved in the M direction, and then moved in the N direction. Thereby, the seat structure 3
As shown in FIG. 14, the rare gas discharge lamp is wound on the outer peripheral surface of the envelope 1 and the other end 4b is superimposed on one end 4a of the translucent sheet 4 and adhered by the adhesive layer 9. L is completed.
【０００８】この希ガス放電灯Ｌは、例えば図１８に示
す点灯装置によって点灯される。この点灯装置（高周波
電圧発生回路）ＨＡは、一次コイルＴＲａ，二次コイル
ＴＲｂを有する出力トランスＴＲＡと、出力トランスＴ
ＲＡの一次コイルＴＲａに直列接続された電界効果形ト
ランジスタ（ＦＥＴ）などのスイッチング素子ＱＡと、
スイッチング素子ＱＡのゲートに矩形波の駆動信号を付
与するための駆動回路ＰＤと、出力トランスＴＲＡの一
次コイルＴＲａとスイッチング素子ＱＡとの直列回路に
ほぼ並列接続されたコンデンサＣＡとから構成されてい
る。そして、高周波電圧発生回路ＨＡの出力側には希ガ
ス放電灯Ｌが、その外部電極５，６にパルス状の高周波
高電圧が印加されるように接続されている。The rare gas discharge lamp L is lit by, for example, a lighting device shown in FIG. This lighting device (high-frequency voltage generating circuit) HA includes an output transformer TRA having a primary coil TRa and a secondary coil TRb, and an output transformer T
A switching element QA such as a field effect transistor (FET) connected in series to the primary coil TRa of RA;
The driving circuit PD includes a driving circuit PD for applying a rectangular-wave driving signal to the gate of the switching element QA, and a capacitor CA connected in parallel with a series circuit of the primary coil TRa of the output transformer TRA and the switching element QA. . A rare gas discharge lamp L is connected to the output side of the high frequency voltage generating circuit HA so that a pulsed high frequency high voltage is applied to its external electrodes 5 and 6.
【０００９】この点灯装置は次のように動作する。ま
ず、高周波電圧発生回路ＨＡの入力側に直流電源ＥＢを
接続すると、コンデンサＣＡは充電される。この状態
で、駆動回路ＰＤからスイッチング素子ＱＡのゲートに
図１９（ａ）に示す駆動信号を印加すると、スイッチン
グ素子ＱＡは同図（ｂ）及び図２０（ａ）に示すように
時点ｔ1，ｔ2，ｔ3・・・でオン，オフ動作する。スイ
ッチング素子ＱＡが時点ｔ1でオン状態になると、出力
トランスＴＲＡの一次コイルＴＲａには図１９（ｃ）に
示すようにコイル電流Ｉｃが流れ、出力トランスＴＲＡ
の一次コイルＴＲａには電磁エネルギーが蓄積される。
次に、スイッチング素子ＱＡが時点ｔ2でオフ状態にな
ると、蓄積された電磁エネルギーの作用に基づいて出力
トランスＴＲＡの二次コイルＴＲｂには一次コイルＴＲ
ａと二次コイルＴＲｂとの巻線比によるパルス状の高周
波電圧が発生し、希ガス放電灯Ｌの外部電極５，６に印
加され、希ガス放電灯Ｌは点灯状態になる。希ガス放電
灯Ｌが点灯状態になると、希ガス放電灯Ｌには図１９
（ｄ）及び図２０（ｂ）に示すようにランプ電流Ｉｂが
流れる。このランプ電流Ｉｂは、繰り返し周期における
それぞれの１周期Ｔの期間Ｔ１，Ｔ２に流れ、期間Ｔ２
では希ガス放電灯Ｌに蓄積された電荷がランプ電流とし
て期間Ｔ１の方向とは逆方向に流れる。尚、この期間Ｔ
２を便宜的に跳ね返り期間と呼称する。この跳ね返り期
間Ｔ２の間（例えば時点ｔ3）にスイッチング素子ＱＡ
に駆動信号を付与すると、図１９（ｃ）に示すように時
点ｔ3 においてコイル電流Ｉｃにパルス的な電流が流れ
る。この電流に関連してランプ電流Ｉｂには同図（ｄ）
及び図２０（ｂ）において斜線で示すランプ電流Ｉｂｊ
が、期間Ｔ２に流れるランプ電流に重畳されて流れる。
尚、スイッチング素子ＱＡへの駆動信号の付与タイミン
グを跳ね返り期間Ｔ２の範囲外に遅らせると、ランプ電
流Ｉｂは単なる減衰振動となり、斜線で示すランプ電流
Ｉｂｊは流れなくなる。これによって、希ガス放電灯Ｌ
は図１９（ｅ）に示すように発光（φ）し、ランプ電流
Ｉｂｊの増加に対応して明るさφも同図において斜線
（φｊ）で示すように増加される。This lighting device operates as follows. First, when the DC power supply EB is connected to the input side of the high-frequency voltage generating circuit HA, the capacitor CA is charged. In this state, when the drive signal shown in FIG. 19A is applied from the drive circuit PD to the gate of the switching element QA, the switching element QA is turned on at time t 1 , as shown in FIGS. On and off operations are performed at t 2 , t 3 ,. When the switching element QA is turned on at time t 1, the coil current Ic flows as shown in FIG. 19 (c) in the primary coil TRa of the output transformer TRA, the output transformer TRA
The electromagnetic energy is accumulated in the primary coil TRa.
Next, when the switching element QA is turned off at time t 2, the accumulated primary coil TR in the secondary coil TRb of the output transformer TRA based on the action of the electromagnetic energy
A pulsed high-frequency voltage is generated according to the winding ratio of the secondary coil TRb to the external electrodes 5 and 6 of the rare gas discharge lamp L, and the rare gas discharge lamp L is turned on. When the rare gas discharge lamp L is turned on, the rare gas discharge lamp L
The lamp current Ib flows as shown in (d) and FIG. 20 (b). This lamp current Ib flows in the periods T1 and T2 of each one cycle T in the repetition cycle,
In the case, the electric charge accumulated in the rare gas discharge lamp L flows in the direction opposite to the direction of the period T1 as a lamp current. Note that this period T
2 is called a bounce period for convenience. During the rebound period T2 (for example, at time t 3 ), the switching element QA
When applying a driving signal to the pulse-like current flows through the coil current Ic at time t 3 as shown in FIG. 19 (c). In relation to this current, the lamp current Ib is shown in FIG.
And a lamp current Ibj indicated by oblique lines in FIG.
Flows superimposed on the lamp current flowing in the period T2.
Incidentally, if the timing of applying the drive signal to the switching element QA is delayed outside the range of the rebound period T2, the lamp current Ib simply becomes a damped oscillation, and the lamp current Ibj indicated by oblique lines does not flow. Thereby, the rare gas discharge lamp L
Emits light (φ) as shown in FIG. 19 (e), and the brightness φ is increased as shown by the oblique line (φj) in FIG. 19 in accordance with the increase in the lamp current Ibj.
【００１０】この点灯装置によれば、希ガス放電灯Ｌの
点灯状態において、スイッチング素子ＱＡのオフ動作
後、ランプ電流Ｉｂの方向が反転する跳ね返り期間Ｔ２
にスイッチング素子ＱＡをオン動作させることによっ
て、高周波電圧発生回路ＨＡの入力電流をことさらに増
加させなくても、跳ね返り期間Ｔ２にランプ電流Ｉｂを
Ｉｂｊ分だけ増加させることができ、その分、明るさも
増加できる。その上、希ガス放電灯Ｌに印加する高周波
電圧のパルス化によって一層に光量を高めることができ
る。従って、ＯＡ機器の原稿照射読取装置に適用した場
合には、原稿面照度を高めることができ、読取品位など
を向上させることができる。According to this lighting device, in the lighting state of the rare gas discharge lamp L, after the switching element QA is turned off, the bounce period T2 in which the direction of the lamp current Ib is reversed.
By turning on the switching element QA, the lamp current Ib can be increased by Ibj during the rebound period T2 without further increasing the input current of the high-frequency voltage generation circuit HA, and the brightness is accordingly increased. Can increase. In addition, the amount of light can be further increased by pulsing the high-frequency voltage applied to the rare gas discharge lamp L. Therefore, when applied to a document irradiation reading device of an OA device, the illuminance of the document surface can be increased, and the reading quality and the like can be improved.
【００１１】特に、この希ガス放電灯Ｌには水銀が用い
られていないために、点灯後における光量の立ち上がり
が急峻であり、点灯と同時に光量がほぼ１００％近くま
で達するという特徴を有している。このために、ファク
シミリ，イメージスキャナ，複写機などのＯＡ機器にお
ける原稿読取用の光源として好適するものである。In particular, since no mercury is used in the rare gas discharge lamp L, the rising of the amount of light after lighting is steep, and the amount of light reaches almost 100% simultaneously with lighting. I have. For this reason, it is suitable as a light source for document reading in OA equipment such as a facsimile, an image scanner, and a copying machine.
【００１２】又、希ガス放電灯の組み立てに上述の方法
を採用すれば、透光性シート４の一方の面には接着層９
が形成されているために、外囲器１をシート構体３の上
で転動させるだけの単純動作によって、シート構体３を
外囲器１の外周面に巻回し密着できるために、作業能率
を著しく改善できるのみならず、機械化が可能となり、
量産性を高めることができるなどの優れた効果が期待で
きる。If the above-described method is employed for assembling the rare gas discharge lamp, the adhesive layer 9 is provided on one surface of the light-transmitting sheet 4.
Is formed, the sheet structure 3 can be wound around and adhered to the outer peripheral surface of the envelope 1 by a simple operation of simply rolling the envelope 1 on the sheet structure 3, and thus the work efficiency is improved. Not only can it be significantly improved, but it can also be mechanized,
An excellent effect such as an increase in mass productivity can be expected.
【００１３】[0013]
【発明が解決しようとする課題】ところで、かかる希ガ
ス放電灯ＬがＯＡ機器における原稿照射読取装置に適用
された場合には、上述のような優れた効果が期待でき、
望ましいものであり、近時、各種の原稿照射読取装置な
どに適用されている。When the rare gas discharge lamp L is applied to a document irradiation reading apparatus in an OA apparatus, the above-described excellent effects can be expected.
This is desirable, and has recently been applied to various types of document irradiation and reading devices.
【００１４】しかしながら、近時、原稿照射読取装置は
ＯＡ機器の小形化に関連して密閉構造に構成される傾向
にあり、このような場合、希ガス放電灯Ｌには外来光が
照射されることは殆んどなく、ほぼ暗黒状態におかれ
る。従って、外来光の存在下では、希ガス放電灯Ｌを図
１８に示す点灯装置に組み込み、例えば周波数が２５Ｋ
Ｈｚ，電圧が２５００ＶO-P 程度のパルス状の高周波電
圧を外部電極５，６に印加すれば、電圧印加後ほぼ１５
００〜２０００ｍＳ（ミリ秒）程度以下で点灯するもの
の、かかる暗黒状態では点灯に５０００〜６０００ｍＳ
以上を要するのみならず、中には全く点灯しないものが
発生するなど、点灯時間のバラツキも極めて大きくな
る。このために、時には、ＯＡ機器の使用に支障が生ず
ることがある。However, recently, there is a tendency that the original irradiation reading apparatus is configured in a hermetically sealed structure in relation to the downsizing of the OA equipment. In such a case, the rare gas discharge lamp L is irradiated with extraneous light. Almost nothing, it is almost dark. Therefore, in the presence of extraneous light, the rare gas discharge lamp L is incorporated in the lighting device shown in FIG.
If a pulsed high-frequency voltage of about 2500 Hz OP and a voltage of about 2500 V OP is applied to the external electrodes 5 and 6, approximately 15
Although the light is turned on in about 0.00 to 2000 mS (millisecond) or less, in the dark state, the light is turned on for 5000 to 6000 mS.
Not only the above is required, but also the lighting time varies greatly, for example, some of them do not light at all. For this reason, use of the OA equipment may sometimes be hindered.
【００１５】この原因は、次のように考えられる。即
ち、一般に蛍光ランプは、始動に際し、初期電子が存在
しないと電離が円滑に行われないために、始動ができな
いか若しくは困難になる。通常、放電のきっかけとなる
初期電子としては、熱電子，光電子，高電界により放出
される電子及び自然界の宇宙線などがある。しかし、例
えば上述のＯＡ機器のように外界から完全に遮断された
部所に希ガス放電灯ＤＬが配置される場合には、希ガス
放電灯ＤＬに自然界の宇宙線が届かなくなり、初期電子
は期待できなくなる。従って、この種希ガス放電灯では
始動特性が不安定になり、点灯時間のバラツキも大きく
なるという問題がある。The cause is considered as follows. That is, in general, a fluorescent lamp cannot be started or is difficult to start because the ionization is not performed smoothly unless initial electrons are present at the time of starting. Normally, initial electrons that trigger discharge include thermoelectrons, photoelectrons, electrons emitted by a high electric field, and cosmic rays in the natural world. However, when the rare gas discharge lamp DL is disposed in a place completely shielded from the outside like the above-mentioned OA equipment, natural cosmic rays do not reach the rare gas discharge lamp DL, and the initial electrons are I can not expect it. Therefore, this kind of rare gas discharge lamp has a problem that the starting characteristics become unstable and the variation of the lighting time becomes large.
【００１６】それ故に、本発明の目的は、比較的に簡単
な構成によって暗黒状態での始動特性を容易に改善でき
る希ガス放電灯を提供することにある。SUMMARY OF THE INVENTION An object of the present invention is to provide a rare gas discharge lamp which can easily improve the starting characteristics in a dark state with a relatively simple structure.
【００１７】[0017]
【課題を解決するための手段】従って、本発明は、上述
の目的を達成するために、内面に発光層を有し、かつ内
部空間に希ガスを封入してなる外囲器と、外囲器の外周
面に、それの端部を除く長手方向部分に第１，第２の開
口部が形成されるように互いに離隔して配置した金属部
材よりなる一対の帯状の外部電極と、外部電極の配置さ
れていない外囲器の端部に対応する外囲器内面にほぼ帯
状に形成した導電部材とを具備したことを特徴とする。SUMMARY OF THE INVENTION Accordingly, in order to achieve the above object, the present invention provides an envelope having a light emitting layer on an inner surface and a rare gas sealed in an inner space; A pair of band-shaped external electrodes made of a metal member arranged on the outer peripheral surface of the container so as to be spaced apart from each other so as to form first and second openings in the longitudinal direction excluding the ends thereof; And a conductive member formed substantially in a band shape on the inner surface of the envelope corresponding to the end of the envelope not provided with the above.
【００１８】又、本発明の第２の発明は、内面に発光層
を有し、かつ内部空間に希ガスを封入してなる外囲器
と、外囲器の外周面に、それの端部を除く長手方向部分
に第１，第２の開口部が形成されるように互いに離隔し
て配置した金属部材よりなる一対の帯状の外部電極と、
外部電極の配置されていない外囲器の端部に対応する外
囲器内面にほぼ帯状に形成した導電部材と、外囲器の外
周面に、外部電極が被覆されるように装着した透光性の
絶縁部材とを具備したことを特徴とし、第３の発明は、
前記絶縁部材を、透光性シート又は熱収縮性樹脂よりな
る保護チューブにて構成したことを特徴とする。According to a second aspect of the present invention, there is provided an envelope having a light-emitting layer on an inner surface and a rare gas sealed in an inner space, and an outer peripheral surface of the envelope, and an end portion thereof. A pair of strip-shaped external electrodes made of metal members spaced apart from each other so as to form first and second openings in the longitudinal direction except for
A conductive member formed in a substantially band shape on the inner surface of the envelope corresponding to the end of the envelope where the external electrode is not disposed, and a light-transmitting member mounted on the outer peripheral surface of the envelope so as to cover the external electrode. And a third insulating member,
The insulating member is formed of a light-transmitting sheet or a protective tube made of a heat-shrinkable resin.
【００１９】又、本発明の第４の発明は、内面に発光層
を有し、かつ内部空間に希ガスを封入してな外囲器と、
外囲器の全長とほぼ同程度の長さを有する透光性シート
の一方の面に長さが外囲器の全長より短い金属部材より
なる一対の帯状の外部電極を、第１，第２の開口部が形
成されるように互いに離隔して配置し、かつ外部電極の
位置する側の透光性シート面及び外部電極面に接着層を
形成してなるシート構体とを具備し、前記外囲器の外周
面にシート構体を、外囲器と透光性シートとの間に外部
電極が位置するように巻回し、かつ外部電極の配置され
ていない外囲器の端部に対応する外囲器内面に導電部材
がほぼ帯状に形成されていることを特徴とする。A fourth invention of the present invention provides an envelope having a light emitting layer on an inner surface and a rare gas sealed in an inner space;
A pair of strip-shaped external electrodes made of a metal member having a length shorter than the entire length of the envelope are provided on one surface of a light-transmitting sheet having a length substantially equal to the entire length of the envelope, and And a sheet structure in which an adhesive layer is formed on the light-transmitting sheet surface on the side where the external electrodes are located and the external electrode surface, so that the openings are formed. A sheet structure is wound on the outer peripheral surface of the envelope so that the external electrode is located between the envelope and the translucent sheet, and the outer side corresponding to the end of the envelope where the external electrode is not arranged is provided. The conductive member is formed in a substantially band shape on the inner surface of the envelope.
【００２０】又、本発明の第５の発明は、前記導電部材
がカーボン，銀，酸化亜鉛，アルミニウム，酸化錫，酸
化インジウム，バリウム，ニッケル又はこれらを含む物
質であることを特徴とする。According to a fifth aspect of the present invention, the conductive member is made of carbon, silver, zinc oxide, aluminum, tin oxide, indium oxide, barium, nickel or a substance containing these.
【００２１】さらに、本発明の第６の発明は、前記導電
部材を、外部電極が配置されておらず、かつ発光層が形
成されていない外囲器の端部に対応する外囲器内面にほ
ぼ帯状の無端リング状に形成したことを特徴とし、第７
の発明は、前記導電部材を、外部電極が配置されておら
ず、かつ発光層が形成されていない外囲器の端部に対応
する外囲器内面にほぼ帯状の有端リング状又は円弧状に
形成したことを特徴とし、第８の発明は、前記第１の開
口部にほぼ対応する外囲器内面に、発光層の形成されて
いないアパーチャ部を形成したことを特徴とする。Further, according to a sixth aspect of the present invention, the conductive member is provided on an inner surface of the envelope corresponding to an end of the envelope where no external electrode is provided and the light emitting layer is not formed. It is characterized by being formed in a substantially band-like endless ring shape.
The invention is characterized in that the conductive member is formed in a substantially band-shaped end-ring or arc shape on the inner surface of the envelope corresponding to the end of the envelope where the external electrode is not arranged and the light emitting layer is not formed. An eighth aspect of the present invention is characterized in that an aperture portion on which a light emitting layer is not formed is formed on an inner surface of the envelope substantially corresponding to the first opening.
【００２２】[0022]
【発明の実施の形態】次に、本発明にかかる希ガス放電
灯の第１の実施例について図１〜図４を参照して説明す
る。尚、図１４〜図１６に示す先行技術と同一部分には
同一参照符号を付し、その詳細な説明は省略する。同図
において、この実施例の特徴部分は、外囲器１の外周面
に金属部材よりなる一対の帯状の外部電極５，６を、外
囲器１の端部１ａを除く長手方向部分に第１，第２の開
口部７，８が形成されるように互いに離隔して配置した
ことと、外部電極５，６が配置されておらず、しかも発
光層２が形成されていない外囲器１の端部１ａに対応す
る外囲器内面に導電部材ＣＳをほぼ帯状で無端リング状
に形成したことである。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A first embodiment of the rare gas discharge lamp according to the present invention will be described with reference to FIGS. The same parts as those in the prior art shown in FIGS. 14 to 16 are denoted by the same reference numerals, and detailed description thereof will be omitted. In this figure, a characteristic part of this embodiment is that a pair of band-shaped external electrodes 5 and 6 made of a metal member are provided on the outer peripheral surface of the envelope 1 in a longitudinal direction excluding the end 1 a of the envelope 1. 1, the second openings 7 and 8 are formed apart from each other, and the envelope 1 in which the external electrodes 5 and 6 are not arranged and the light emitting layer 2 is not formed. The conductive member CS is formed in a substantially band-like and endless ring shape on the inner surface of the envelope corresponding to the end 1a of the above.
【００２３】この希ガス放電灯ＤＬにおいて、外囲器１
の構成部材としては、例えば１５０°Ｃにおける体積抵
抗率が１×１０9 Ωｃｍ以上であり、酸化珪素，酸化硼
素を主成分とする鉛を含まない硼珪酸ガラス系（以下，
便宜的にＢＦＫガラスと呼称する）が好適する。このＢ
ＦＫガラスは、例えば酸化珪素（６７．６％），アルミ
ナ（４％），酸化硼素（１８％），酸化ナトリウム（１
％），酸化カリウム（８％），酸化リチウム（１％），
酸化チタン（０．４％）などから構成されている。この
他にも、鉛ガラス，ソーダガラス，バリウムガラスなど
が適用できる。このバリウムガラスは、例えば珪酸，ア
ルミナ，硼酸，カリウム，バリウム，カルシウムなどの
酸化物などから構成されている。これらのガラスの肉厚
は０．２〜０．７ｍｍ（好ましくは０．４〜０．７ｍ
ｍ）に設定されている。しかしながら、肉厚が０．４ｍ
ｍ未満、特に０．２ｍｍ未満になると、外囲器１の機械
的な強度が極端に低下するために、量産設備による生産
工程でのガラス破損に伴う不良率が増加するようになる
し、逆に、肉厚が０．７ｍｍを超えると、縞状の放電状
態が目視され、アパーチャ部２ａから放出される光にチ
ラツキが生ずることがある。従って、外囲器１の肉厚は
上記範囲内に設定することが望ましい。尚、用途などに
よっては上記範囲を逸脱して使用することも可能であ
る。In the rare gas discharge lamp DL, the envelope 1
Is a borosilicate glass (hereinafter, referred to as a lead-free material) having a volume resistivity at 150 ° C. of 1 × 10 9 Ωcm or more and containing silicon oxide and boron oxide as main components.
BFK glass is referred to for convenience). This B
FK glass includes, for example, silicon oxide (67.6%), alumina (4%), boron oxide (18%), and sodium oxide (1%).
%), Potassium oxide (8%), lithium oxide (1%),
It is made of titanium oxide (0.4%) or the like. In addition, lead glass, soda glass, barium glass, and the like can be applied. This barium glass is made of, for example, an oxide of silicic acid, alumina, boric acid, potassium, barium, calcium, or the like. The thickness of these glasses is 0.2 to 0.7 mm (preferably 0.4 to 0.7 m).
m). However, the thickness is 0.4m
m, especially less than 0.2 mm, the mechanical strength of the envelope 1 is extremely reduced, so that the defect rate due to glass breakage in the production process by mass production equipment increases, On the other hand, when the thickness exceeds 0.7 mm, a striped discharge state is visually observed, and the light emitted from the aperture portion 2a may flicker. Therefore, it is desirable to set the thickness of the envelope 1 within the above range. It should be noted that, depending on the use and the like, it is also possible to use the above-mentioned range.
【００２４】又、この外囲器１の内部空間にはキセノン
ガスを主成分とする希ガスが封入されており、その封入
圧力は例えば８３〜２００トルの範囲に設定されてい
る。この範囲では、外来光の存在下において、始動特
性，光出力，チラツキに関する改善効果が得られる。し
かしながら、封入圧力が８３トル未満になると、光出力
に対する改善効果が不十分になるし、逆に、封入圧力が
２００トルを超えると、始動特性が損なわれるのみなら
ず、縞状の放電状態が目視され、アパーチャ部２ａから
放出される光にチラツキが生ずることがある。従って、
希ガスの封入圧力は上記範囲内に設定することが望まし
い。尚、用途などによっては上記範囲を逸脱して使用す
ることも可能である。The inner space of the envelope 1 is filled with a rare gas containing xenon gas as a main component, and its filling pressure is set, for example, in the range of 83 to 200 torr. Within this range, in the presence of extraneous light, the effects of improving the starting characteristics, light output, and flicker can be obtained. However, when the sealing pressure is less than 83 Torr, the effect of improving the light output becomes insufficient. Conversely, when the sealing pressure exceeds 200 Torr, not only the starting characteristics are impaired, but also the striped discharge state is reduced. The light emitted from the aperture portion 2a may be flickered when visually observed. Therefore,
It is desirable that the noble gas filling pressure is set within the above range. It should be noted that, depending on the use and the like, it is also possible to use the above-mentioned range.
【００２５】又、発光層２は外囲器１の内面に、それの
端部１ａ，１ｂを除いてほぼ全長に亘って形成されてい
る。特に、この発光層２は、希ガス放電灯の用途によっ
て、使用する蛍光体が１種のみにて構成されたり、２種
以上を適宜に混合して構成されたりする。例えば三波長
域発光形の場合には、例えば青色領域に発光スペクトル
を有するユーロピウム付活アルミン酸バリウム・マグネ
シウム蛍光体，緑色領域に発光スペクトルを有するセリ
ウム・テルビウム付活リン酸ランタン蛍光体，赤色領域
に発光スペクトルを有するユーロピウム付活硼酸イット
リウム・ガドリウム蛍光体を混合してなる混合蛍光体に
て形成され、その付着量は１ｃｍ2 当たり５〜３０ｍｇ
の範囲に設定されている。この範囲では十分の光量が得
られるものの、その付着量が５ｍｇ未満になると、光量
不足になるし、逆に、付着量が３０ｍｇを超えると、均
質な発光層の形成が困難になる。従って、発光層２の付
着量は上記範囲内に設定することが望ましい。The light-emitting layer 2 is formed on the inner surface of the envelope 1 over substantially the entire length except for its ends 1a and 1b. In particular, the light-emitting layer 2 may be composed of only one kind of phosphor to be used or a mixture of two or more kinds of phosphors as appropriate, depending on the use of the rare gas discharge lamp. For example, in the case of a three-wavelength-band emission type, for example, a europium-activated barium magnesium aluminate phosphor having an emission spectrum in a blue region, a cerium / terbium-activated lanthanum phosphate phosphor having an emission spectrum in a green region, a red region And a mixture of europium-activated yttrium and gadolinium borate phosphors having an emission spectrum, the amount of which is 5 to 30 mg per 1 cm 2 .
Is set in the range. Although a sufficient amount of light can be obtained in this range, if the amount of adhesion is less than 5 mg, the amount of light will be insufficient. Conversely, if the amount of adhesion exceeds 30 mg, it will be difficult to form a uniform light emitting layer. Therefore, it is desirable that the amount of the light-emitting layer 2 attached be set within the above range.
【００２６】又、外部電極５，６は導電性に優れた金属
部材にて構成されており、外囲器１の外周面にほぼ帯状
の状態で配置されている。特に、外囲器１の外周面にシ
ート構体３を巻回して装着する際に、外部電極５，６は
外囲器１の外周面に、それの端部１ａ，１ｂを除くほぼ
全長に亘って配置される。即ち、ほぼ発光層２の形成部
分に対応する外囲器１の外周面に配置されている。しか
も、外部電極５，６の側縁部５ａ，６ａ間及び側縁部５
ｂ，６ｂ間にはそれぞれ第１，第２の開口部７，８が形
成されており、外部電極５の側縁部５ｂには周期性を有
する三角状の異形部５Ａが形成されているが、矩形状，
半円状など適宜の異形状に形成することも可能である。
尚、外部電極５，６の側縁部５ａ，６ａ，６ｂはストレ
ート状に形成されている。The external electrodes 5 and 6 are made of a metal member having excellent conductivity, and are arranged on the outer peripheral surface of the envelope 1 in a substantially band-like state. In particular, when the sheet structure 3 is wound around and mounted on the outer peripheral surface of the envelope 1, the external electrodes 5, 6 are applied to the outer peripheral surface of the envelope 1 over substantially the entire length except for the end portions 1 a, 1 b thereof. Placed. That is, it is arranged on the outer peripheral surface of the envelope 1 substantially corresponding to the portion where the light emitting layer 2 is formed. Moreover, between the side edges 5a, 6a of the external electrodes 5, 6 and the side edges 5
Although first and second openings 7 and 8 are formed between b and 6b, respectively, a triangular irregular portion 5A having periodicity is formed at the side edge 5b of the external electrode 5. , Rectangular,
It is also possible to form them in an appropriate different shape such as a semicircle.
The side edges 5a, 6a, 6b of the external electrodes 5, 6 are formed in a straight shape.
【００２７】さらに、外囲器１の端部内面には導電部材
ＣＳがほぼ帯状の無端リング状に形成されている。特
に、この導電部材ＣＳは外部電極５，６が配置されてお
らず、かつ発光層２が形成されていない外囲器１の端部
１ａに対応する外囲器内面にほぼ帯状の無端リング状に
形成されている。この導電部材ＣＳはその幅が０．２〜
５ｍｍ程度、好ましくは１〜３ｍｍ程度の帯状に形成さ
れており、例えばカーボン，銀，酸化亜鉛，アルミニウ
ム，酸化錫，酸化インジウム，バリウム，ニッケル又は
これらを含む物質で構成されているが、特にカーボンが
経済性，化学的な安定性などの点から好適する。この導
電部材Ｃｓは、例えば転写，塗布ノズル，吹き付け，刷
毛塗りなどの適宜の方法によって形成されるが、後述す
るリング部材を利用した転写法などが推奨される。Further, a conductive member CS is formed on the inner surface of the end portion of the envelope 1 in a substantially band-like endless ring shape. In particular, the conductive member CS has a substantially band-shaped endless ring shape on the inner surface of the envelope corresponding to the end 1a of the envelope 1 on which the external electrodes 5 and 6 are not arranged and the light emitting layer 2 is not formed. Is formed. This conductive member CS has a width of 0.2 to
It is formed in a band shape of about 5 mm, preferably about 1 to 3 mm, and is made of, for example, carbon, silver, zinc oxide, aluminum, tin oxide, indium oxide, barium, nickel or a substance containing these. Is preferred in terms of economy, chemical stability, and the like. The conductive member Cs is formed by an appropriate method such as transfer, a coating nozzle, spraying, or brushing, and a transfer method using a ring member described later is recommended.
【００２８】次に、この希ガス放電灯ＤＬの製造方法に
ついて図５を参照して説明する。まず、同図（ａ）に示
すように、ガラスバルブよりなる直管状の外囲器１の内
面に蛍光体よりなる発光層２を形成する。具体的には、
蛍光体塗布液を、直立させた外囲器１の上方側の端部１
ｂから流し込むことによって塗布膜を形成し、乾燥・仮
焼成することによって形成する。次に、同図（ｂ）に示
すように、外囲器１の端部１ａ，１ｂに形成されている
発光層２をブラシなどによって剥がし・除去する。次
に、同図（ｃ）に示すように、硬質ゴム，金属などより
なるスクレーパを利用して発光層２を所定の開口角とな
るように剥がし・除去することによりアパーチャ部２ａ
を形成する。次に、同図（ｄ）に示すように、カーボン
などの導電部材ＣＳ，フリットガラスなどを含むバイン
ダー，溶剤よりなる導電部材塗布液を発光層２の形成さ
れていない端部１ａの内面に塗布する。具体的には、細
い棒の先端にＯリングなどのようなリング部材を固定
し、このリング部材に例えばペースト状の導電部材塗布
液を塗布し、細い棒の先端のリング部材を外囲器１の内
部に挿入して端部１ａの所望部分にリング部材を接触さ
せた状態で外囲器１を１回転させる。これによって、端
部１ａの内面の全周面には導電部材塗布液が無端リング
状に被着（転写）される。この状態で、外囲器１を焼成
することによって最終的に発光層２及び導電部材ＣＳが
形成されることになる。次に、外囲器１の一方の端部を
トップシールなどによって封止し、外囲器内部に所定量
の希ガスを封入した後に、他方の端部をトップシールな
どによって封止する。次に、外囲器１の外周面にシート
構体３を、例えば図１７に示す方法に準じて巻回する。
この際に、外部電極５，６は導電部材ＣＳと発光層２と
の位置関係が図１〜図４に示す位置関係となるように配
置される。即ち、外部電極５，６が導電部材ＣＳの形成
部分に対向しないように、換言すれば導電部材ＣＳの形
成されている端部１ａに食み出さないように配置されて
いる。これによって、図１〜図２に示す希ガス放電灯Ｄ
Ｌが製造される。Next, a method of manufacturing the rare gas discharge lamp DL will be described with reference to FIG. First, as shown in FIG. 1A, a light emitting layer 2 made of a phosphor is formed on the inner surface of a straight tubular envelope 1 made of a glass bulb. In particular,
An upper end 1 of the envelope 1 in which the phosphor coating solution is erected.
The coating film is formed by pouring from b, and is formed by drying and calcination. Next, as shown in FIG. 1B, the light emitting layer 2 formed on the ends 1a and 1b of the envelope 1 is peeled off and removed with a brush or the like. Next, as shown in FIG. 2C, the light emitting layer 2 is peeled and removed so as to have a predetermined opening angle by using a scraper made of hard rubber, metal, or the like, thereby forming the aperture portion 2a.
To form Next, as shown in FIG. 1D, a conductive member coating solution composed of a conductive member CS such as carbon, a binder containing frit glass or the like, and a solvent is applied to the inner surface of the end portion 1a where the light emitting layer 2 is not formed. I do. Specifically, a ring member such as an O-ring is fixed to the tip of the thin rod, and a paste-like conductive member application liquid is applied to the ring member, and the ring member at the tip of the thin rod is placed in the envelope 1. And the envelope 1 is rotated once while the ring member is in contact with a desired portion of the end 1a. Thus, the conductive member coating liquid is applied (transferred) to the entire peripheral surface of the inner surface of the end portion 1a in an endless ring shape. By baking the envelope 1 in this state, the light emitting layer 2 and the conductive member CS are finally formed. Next, one end of the envelope 1 is sealed with a top seal or the like, and after a predetermined amount of a rare gas is sealed inside the envelope, the other end is sealed with a top seal or the like. Next, the sheet structure 3 is wound around the outer peripheral surface of the envelope 1 according to, for example, a method shown in FIG.
At this time, the external electrodes 5 and 6 are arranged such that the positional relationship between the conductive member CS and the light emitting layer 2 becomes the positional relationship shown in FIGS. That is, the external electrodes 5 and 6 are arranged so as not to face the portion where the conductive member CS is formed, in other words, so as not to protrude to the end 1a where the conductive member CS is formed. Thereby, the rare gas discharge lamp D shown in FIGS.
L is manufactured.
【００２９】この希ガス放電灯ＤＬは、例えば図１８に
示す点灯装置によって図１４に示す希ガス放電灯と同様
に点灯される。しかしながら、この希ガス放電灯ＤＬは
外来光が殆んど照射されないような暗黒状態の環境下で
も確実に点灯する。このような暗黒状態での点灯原理に
ついて図６を参照して説明する。まず、外部電極５，６
に高周波電圧を図示の極性で印加すると、外囲器１には
図示のように分極が生じ、外部電極間には図示矢印方向
に電界が発生する。一方、導電部材ＣＳには電流が発生
し、これに伴って導電部材ＣＳの周辺には電界が発生
し、この電界によって導電部材ＣＳから放電に必要な初
期電子が希ガス雰囲気に放出される。従って、希ガス放
電灯ＤＬは瞬時に放電が開始されるものと考えられる。The rare gas discharge lamp DL is lit by, for example, the lighting device shown in FIG. 18 similarly to the rare gas discharge lamp shown in FIG. However, the rare gas discharge lamp DL is reliably turned on even in a dark environment where external light is hardly irradiated. The lighting principle in such a dark state will be described with reference to FIG. First, the external electrodes 5, 6
When a high-frequency voltage is applied with a polarity shown in FIG. 1, polarization occurs in the envelope 1 as shown in the figure, and an electric field is generated between the external electrodes in the direction of the arrow shown in the figure. On the other hand, an electric current is generated in the conductive member CS, and an electric field is generated around the conductive member CS in accordance with the current, and the electric field causes initial electrons necessary for discharge to be discharged from the conductive member CS into a rare gas atmosphere. Therefore, it is considered that the discharge of the rare gas discharge lamp DL is started instantaneously.
【００３０】この実施例によれば、導電部材ＣＳは外部
電極５，６に対向せず、しかも発光層２が形成されてい
ない外囲器１の端部１ａに配置されているために、希ガ
ス放電灯の設置環境下の照度が仮に０．０１Ｌｘ以下の
ほぼ暗黒状態であっても、消灯後、かなり長い時間（例
えば２４時間程度）を経過してから、外部電極５，６に
パルス状の高周波電圧を印加するとほぼ２０００ｍＳ以
下の短い時間で確実に点灯させることができるし、点灯
時間のバラツキも小さくできる。According to this embodiment, since the conductive member CS does not face the external electrodes 5 and 6 and is disposed at the end 1a of the envelope 1 where the light emitting layer 2 is not formed, the conductive member CS is rarely used. Even if the illuminance under the installation environment of the gas discharge lamp is almost dark, that is, 0.01 Lx or less, after a considerably long time (for example, about 24 hours) has elapsed since the light was turned off, the external electrodes 5 and 6 are pulsed. When the high frequency voltage is applied, the lighting can be reliably performed in a short time of approximately 2000 ms or less, and the variation of the lighting time can be reduced.
【００３１】特に、導電部材ＣＳは外囲器１の端部１ａ
の内面に無端リング状に形成されているために、製造過
程において仮に導電部材ＣＳの一部に亀裂が形成された
としても、十分に初期電子を発生させることができ、暗
黒状態において希ガス放電灯ＤＬを確実に点灯させるこ
とができる。In particular, the conductive member CS is connected to the end 1 a of the envelope 1.
Is formed in an endless ring shape on the inner surface of the conductive member CS, even if a crack is formed in a part of the conductive member CS during the manufacturing process, sufficient initial electrons can be generated, and rare gas discharge occurs in a dark state. The electric light DL can be reliably turned on.
【００３２】又、導電部材ＣＳは光遮蔽体として作用す
るものの、外部電極５，６に対向せず、しかも発光層２
が形成されていない外囲器１の端部１ａに配置されてい
るために、アパーチャ部２ａから放出される光は有効に
利用され、光量を減少させるような悪影響は生じない
し、発光層２への影響も全くない。しかしながら、外部
電極５，６に対向し、かつ発光層２の形成されている部
分に導電部材ＣＳを配置したりすると、導電部材ＣＳに
よって有効な光が遮蔽され、アパーチャ部２ａにおける
照度分布が損なわれるようになる。その上、導電部材Ｃ
Ｓを発光層２の形成部分に配置すると、発光層となる蛍
光体塗布膜の焼成条件が微妙になり、製品化後に原因は
定かでないものの、発光層２が変色し易くなるという問
題などを有し、好ましくない。Although the conductive member CS functions as a light shield, it does not face the external electrodes 5 and 6 and furthermore,
Is disposed at the end 1a of the envelope 1 where the light emitting layer 2 is not formed, the light emitted from the aperture 2a is effectively used, and there is no adverse effect such as reducing the amount of light. There is no influence. However, if the conductive member CS is disposed at a portion facing the external electrodes 5 and 6 and the light emitting layer 2 is formed, effective light is blocked by the conductive member CS, and the illuminance distribution in the aperture 2a is impaired. Will be able to In addition, the conductive member C
When S is disposed in the portion where the light emitting layer 2 is formed, the firing conditions of the phosphor coating film serving as the light emitting layer become delicate, and although the cause is not clear after commercialization, there is a problem that the light emitting layer 2 is easily discolored. And is not preferred.
【００３３】又、外囲器１の端部１ａ，１ｂには発光層
２が形成されていないために、それぞれの端部を例えば
トップシールによって封止する際に、封止部分に蛍光体
が噛み込まれることがなくなり、確実に封止することが
できる。従って、製造過程或いは製品化された後に、封
止部分が破損されるというトラブルの発生が激減し、製
品の品位を高めることができる。Further, since the light emitting layer 2 is not formed on the ends 1a and 1b of the envelope 1, when each end is sealed with, for example, a top seal, a phosphor is applied to the sealed portion. It is not possible to be caught and sealing can be surely performed. Therefore, the occurrence of troubles in which the sealing portion is damaged after the manufacturing process or after the product is manufactured is drastically reduced, and the quality of the product can be improved.
【００３４】さらには、外部電極５の側縁部５ｂには周
期性を有する三角状の異形部５Ａが形成されているため
に、外部電極５，６にパルス状の高周波電圧が印加され
た場合、異形部５Ａに電界が集中する関係で始動特性を
改善できる。特に、暗黒状態では異形部５Ａと導電部材
ＣＳとの存在と相俟って短時間内に確実に点灯させるこ
とができる。Furthermore, since a triangular irregular portion 5A having periodicity is formed on the side edge portion 5b of the external electrode 5, a pulse-like high-frequency voltage is applied to the external electrodes 5 and 6. The starting characteristics can be improved because the electric field concentrates on the deformed portion 5A. In particular, in the dark state, the lighting can be reliably performed within a short time in combination with the presence of the deformed portion 5A and the conductive member CS.
【００３５】図７は本発明の第２の実施例を示すもので
あって、基本的な構成は図１〜図４に示す希ガス放電灯
ＤＬと同じである。異なる点は、外囲器１の外周面に外
部電極５，６を、シート構体３を用いることなく、直接
的に配置したことと、導電部材ＣＳを有端リング状に形
成したことである。尚、導電部材ＣＳは外部電極５，６
に対向しない外囲器１の端部１ａに形成されている。FIG. 7 shows a second embodiment of the present invention. The basic configuration is the same as that of the rare gas discharge lamp DL shown in FIGS. The different points are that the external electrodes 5 and 6 are directly arranged on the outer peripheral surface of the envelope 1 without using the sheet structure 3 and that the conductive member CS is formed in an end ring shape. The conductive member CS is connected to the external electrodes 5 and 6.
Is formed at the end 1a of the envelope 1 which does not face the end portion.
【００３６】この実施例によれば、第１の実施例と同様
に暗黒状態での確実な点灯が可能になる。その上に、第
１の実施例に比べて構成が簡略化され、材料コストを低
減できる。その反面、外部電極５，６を外囲器１の外周
面に直接的に配置しなければならないために、作業能率
は低下する。又、この実施例における導電部材ＣＳの構
成を第１の実施例に適用することもできる。According to this embodiment, as in the first embodiment, reliable lighting in the dark state is possible. In addition, the configuration is simplified as compared with the first embodiment, and the material cost can be reduced. On the other hand, since the external electrodes 5 and 6 must be directly arranged on the outer peripheral surface of the envelope 1, the work efficiency is reduced. Further, the configuration of the conductive member CS in this embodiment can be applied to the first embodiment.
【００３７】図８は本発明の第３の実施例を示すもので
あって、基本的な構成は図１〜図４に示す希ガス放電灯
ＤＬと同じである。異なる点は、外囲器１の外周面に外
部電極５，６を、シート構体３を用いることなく、直接
的に配置したことと、導電部材ＣＳをアパーチャ部２ａ
の端縁に隣接し、かつ外部電極５，６に対向しない端部
１ａに円弧状に形成したことである。FIG. 8 shows a third embodiment of the present invention. The basic structure is the same as that of the rare gas discharge lamp DL shown in FIGS. The difference is that the external electrodes 5 and 6 are directly arranged on the outer peripheral surface of the envelope 1 without using the sheet structure 3 and that the conductive member CS is connected to the aperture 2a.
Is formed in an arc shape at the end 1a adjacent to the edge of the first electrode and not facing the external electrodes 5 and 6.
【００３８】この実施例によれば、第２の実施例と同様
の効果が得られる。又、この実施例における導電部材Ｃ
Ｓの構成は第１の実施例に適用することもできる。According to this embodiment, the same effects as in the second embodiment can be obtained. Further, the conductive member C in this embodiment
The configuration of S can be applied to the first embodiment.
【００３９】図９は本発明の第４の実施例を示すもので
あって、基本的な構成は図１〜図４に示す希ガス放電灯
ＤＬと同じである。異なる点は、第１の開口部７に対応
する外囲器１の内面部分に形成されているアパーチャ部
２ａの開口角θ3を第１の開口部７の開口角θ1より大き
く設定したことである。このアパーチャ部２ａの開口角
θ3は、例えば７０〜１３０度の範囲に設定されている
が、用途，目的などに応じて適宜に変更できる。尚、開
口部７，８の開口角θ1，θ2はθ1＞θ2の関係に設定さ
れている。FIG. 9 shows a fourth embodiment of the present invention. The basic structure is the same as that of the rare gas discharge lamp DL shown in FIGS. The difference is that the opening angle θ 3 of the aperture 2 a formed on the inner surface of the envelope 1 corresponding to the first opening 7 is set to be larger than the opening angle θ 1 of the first opening 7. It is. Opening angle theta 3 of the aperture portion 2a has been set, for example, in the range of 70 to 130 degrees, the application can be changed appropriately depending on the purpose. Note that the opening angles θ 1 and θ 2 of the openings 7 and 8 are set to satisfy the relationship θ 1 > θ 2 .
【００４０】この実施例によれば、第１の実施例と同様
に外来光の乏しい環境下においても確実に希ガス放電灯
を始動させることができる。その上に、外囲器１の外周
面にシート構体３を巻回する際に、第１の開口部７とア
パーチャ部２ａとのセンターが若干ずれても、第１の開
口部７から放出される光の光軸のずれを緩和できる。こ
のために、例えば原稿照射読取装置に適用しても、十分
に高い読み取り精度を得ることができる。尚、この実施
例は第２，第３の実施例に適用することもできる。According to this embodiment, as in the first embodiment, the rare gas discharge lamp can be reliably started even in an environment where external light is poor. Furthermore, when the sheet structure 3 is wound around the outer peripheral surface of the envelope 1, even if the center between the first opening 7 and the aperture 2 a is slightly shifted, the sheet is discharged from the first opening 7. Deviation of the optical axis of the reflected light can be reduced. For this reason, a sufficiently high reading accuracy can be obtained even when the present invention is applied to, for example, a document irradiation reading device. This embodiment can be applied to the second and third embodiments.
【００４１】図１０は本発明の第５の実施例を示すもの
であって、基本的な構成は図１〜図４に示す希ガス放電
灯ＤＬと同じである。異なる点は、端部１ａ，１ｂを除
く外囲器１の外周面に一対の外部電極５，６を接着層を
利用して貼着した後に、一方の面に接着層を有するＰＥ
Ｔ樹脂などの透光性シート４Ａを外囲器１の外周面に、
外部電極５，６が被覆されるように巻回して接着したこ
とである。FIG. 10 shows a fifth embodiment of the present invention. The basic structure is the same as that of the rare gas discharge lamp DL shown in FIGS. The difference is that after a pair of external electrodes 5 and 6 are attached to the outer peripheral surface of the envelope 1 except for the ends 1a and 1b using an adhesive layer, a PE having an adhesive layer on one surface is used.
A translucent sheet 4A such as T-resin is attached to the outer peripheral surface of the envelope 1,
This means that the external electrodes 5 and 6 are wound and adhered so as to be covered.
【００４２】この実施例によれば、第１の実施例と同様
に外来光の乏しい環境下においても確実に希ガス放電灯
を点灯させることができる。その上、外囲器１の外周面
に透光性シート４Ａを巻回するに先立って、外囲器１の
外周面にシリコーンワニスなどの透光性の絶縁被膜を形
成しておけば、外部電極間の絶縁耐力を改善できるし、
透光性シート４Ａへの孔あきも抑制できる。According to this embodiment, as in the first embodiment, the rare gas discharge lamp can be reliably turned on even in an environment where external light is poor. In addition, prior to winding the translucent sheet 4A on the outer peripheral surface of the envelope 1, if a translucent insulating film such as a silicone varnish is formed on the outer peripheral surface of the envelope 1, the external Can improve the dielectric strength between the electrodes,
Perforations in the translucent sheet 4A can also be suppressed.
【００４３】図１１は本発明の第６の実施例を示すもの
であって、基本的な構成は図１〜図４に示す希ガス放電
灯と同じである。異なる点は、端部１ａ，１ｂを除く外
囲器１の外周面に一対の外部電極５，６を接着層を利用
して貼着した後に、外囲器１の外周面にＰＥＴ樹脂など
の熱収縮性樹脂よりなる保護チューブ１２を、外部電極
５，６が被覆されるように装着し、熱収縮させたことで
ある。尚、この保護チューブ１２は外囲器１に装着した
後、例えば１５０〜２００°Ｃ程度に加熱し、収縮させ
ることにより外囲器１の外周面に密着される。FIG. 11 shows a sixth embodiment of the present invention, and the basic configuration is the same as that of the rare gas discharge lamp shown in FIGS. The difference is that a pair of external electrodes 5 and 6 are attached to the outer peripheral surface of the envelope 1 except for the ends 1a and 1b by using an adhesive layer, and then the outer peripheral surface of the envelope 1 is made of PET resin or the like. That is, the protective tube 12 made of a heat-shrinkable resin was mounted so as to cover the external electrodes 5 and 6, and was thermally shrunk. After the protective tube 12 is mounted on the envelope 1, the protective tube 12 is heated to, for example, about 150 to 200 ° C. and shrunk, so that the protective tube 12 is closely attached to the outer peripheral surface of the envelope 1.
【００４４】この実施例によれば、上述の各実施例（第
２，第３の実施例を除く）に比較すると、機械化，作業
能率の点で劣るものの、保護チューブ１２に接着層を使
用しないために、端子の構成部材と接着剤成分との反応
による腐食が軽減され、長期間に亘って安定した動作状
態を維持できる上、保護チューブ１２に継目がないため
に、上述の各実施例のように透光性シート４，４Ａの端
部の重ね合わせ部分の剥がれを完全に防止できる。According to this embodiment, as compared with the above-described embodiments (excluding the second and third embodiments), an adhesive layer is not used for the protective tube 12, although it is inferior in mechanization and work efficiency. Therefore, corrosion due to the reaction between the constituent members of the terminal and the adhesive component is reduced, and a stable operation state can be maintained for a long period of time. As described above, the peeling of the overlapping portions at the ends of the translucent sheets 4 and 4A can be completely prevented.
【００４５】特に、外囲器１の外周面に保護チューブ１
２を装着するに先立って、外囲器１の外周面にシリコー
ンワニスなどの透光性の絶縁被膜を形成しておけば、外
部電極間の絶縁耐力を一層高めることができる。In particular, the protective tube 1 is provided on the outer peripheral surface of the envelope 1.
If a light-transmitting insulating film such as a silicone varnish is formed on the outer peripheral surface of the envelope 1 prior to mounting 2, the dielectric strength between the external electrodes can be further increased.
【００４６】図１２は本発明の第７の実施例を示すもの
であって、外囲器１を展開した状態を示しており、基本
的な構成は図１〜図４に示す希ガス放電灯と同じであ
る。異なる点は、外部電極５，６の側縁部５ｂ，６ｂに
周期性を有する三角状の異形部５Ａ，６Ａを形成するこ
とと、異形部５Ａ，６Ａの先端（尖っている部分）が、
異形部ピッチの２０％以内において対向するように配置
したことである。尚、異形部は三角状の他、台形を含む
矩形状，楕円を含む半円状などにすることもできる。FIG. 12 shows a seventh embodiment of the present invention, in which the envelope 1 is shown in an unfolded state, and the basic structure is the rare gas discharge lamp shown in FIGS. Is the same as The difference is that the triangular irregular portions 5A, 6A having periodicity are formed on the side edges 5b, 6b of the external electrodes 5, 6, and the tips (pointed portions) of the irregular portions 5A, 6A are different from each other.
That is, they are arranged so as to face each other within 20% of the irregular shape pitch. In addition, the deformed portion may be formed in a rectangular shape including a trapezoid, a semicircle shape including an ellipse, or the like, in addition to the triangular shape.
【００４７】この実施例の外部電極の構造は第１の実施
例から第６の実施例にまで適用することもできる。The structure of the external electrodes of this embodiment can be applied to the first to sixth embodiments.
【００４８】図１３は本発明の第８の実施例を示すもの
であって、外囲器１を展開した状態を示しており、基本
的な構成は図１〜図４に示す希ガス放電灯と同じであ
る。異なる点は、外部電極５，６の側縁部５ｂ，６ｂを
すべてストレート状に形成したことである。FIG. 13 shows an eighth embodiment of the present invention, in which the envelope 1 is shown in an unfolded state, and the basic structure is the rare gas discharge lamp shown in FIGS. Is the same as The difference is that the side edges 5b, 6b of the external electrodes 5, 6 are all formed in a straight shape.
【００４９】この実施例によれば、外部電極５，６の形
態がシンプル化されるために、箔状の金属シートからの
プレス設備による打ち抜きが容易になる。又、この実施
例の構成は上述の各実施例に適用することもできる。According to this embodiment, since the form of the external electrodes 5 and 6 is simplified, punching from a foil-like metal sheet by a press facility becomes easy. Further, the configuration of this embodiment can be applied to each of the above-described embodiments.
【００５０】尚、本発明は、何ら上記実施例にのみ制約
されることなく、例えば発光層を構成する蛍光体として
は、セリウム・テルビウム付活リン酸ランタン蛍光体，
ユーロピウム付活酸化イットリウム蛍光体などの他に、
セリウム・テルビウム付活アルミン酸マグネシウム蛍光
体，セリウム・テルビウム付活イットリウム・シリケー
ト蛍光体，ユーロピウム付活アルミン酸バリウム・マグ
ネシウム蛍光体なども使用できる。発光層におけるアパ
ーチャ部を省略し、シート構体の外囲器への巻回作業性
を改善することも可能である。又、透光性シートの端部
の重ね合わせ部分は接着，超音波溶着の他に、熱溶着や
接着と溶着を併用したりして結合することもできる。特
に、外部電極の形態において、「帯状」とは全体として
の形態が帯状であることを意味し、上述のように端部に
異形部を有するものは勿論のこと、端部でない部分に孔
などが存在したり、編目状になっているものなども含ま
れるものとする。さらに、点灯装置はパルス状の高周波
電圧を発生するものの他に、正弦波状の高周波電圧を発
生するものも適用できるし、点灯装置との組合せ状態に
おいて、外部電極の一方の接地は省略することもでき
る。It should be noted that the present invention is not limited only to the above-described embodiment, and for example, as a phosphor constituting the light emitting layer, a cerium / terbium-activated lanthanum phosphate phosphor,
In addition to europium-activated yttrium oxide phosphor,
A cerium / terbium-activated magnesium aluminate phosphor, a cerium / terbium-activated yttrium silicate phosphor, a europium-activated barium / magnesium aluminate phosphor, and the like can also be used. It is also possible to omit the aperture part in the light emitting layer and improve the workability of winding the sheet structure around the envelope. In addition, the overlapped portions at the ends of the translucent sheets can be joined by heat welding or by using both adhesion and welding in addition to bonding and ultrasonic welding. In particular, in the form of the external electrode, the “strip” means that the whole form is a strip, and not only those having an irregular shape at the end as described above, but also holes at the non-end. Or stitches are included. Further, in addition to the lighting device that generates a pulsed high-frequency voltage, a lighting device that generates a sinusoidal high-frequency voltage can be applied, and in the combined state with the lighting device, one of the external electrodes may be omitted from grounding. it can.
【００５１】[0051]
【実施例】次に、実験例について説明する。まず、セリ
ウム・テルビウム付活リン酸ランタン蛍光体とポリエチ
レンオキサイド（水溶性バインダ）と水（溶剤）とを混
合してなる蛍光体塗布液を、外径が８ｍｍ，肉厚が０．
５ｍｍ，長さが３６０ｍｍの鉛ガラスよりなる外囲器の
内面に塗布し、仮焼成する。次に、外囲器端部の発光層
をブラシで剥がすと共に、スクレーパを用いて発光層の
一部を強制的に剥がすことによって開口角７５度のアパ
ーチャ部を形成する。尚、発光層の付着量は１５ｍｇ／
ｃｍ2 に設定されている。次に、発光層が除去された一
方の端部内面にカーボンを含むペースト状の導電部材塗
布液を幅が１ｍｍの無端リング状に転写・塗布し、本焼
成する。以下、図１７に示す先行技術と同様の方法にて
希ガス放電灯を製造した。尚、導電部材と外部電極の端
部との離隔長さは２ｍｍであり、一対の外部電極には幅
が８ｍｍのアルミニウム箔を用い、第２の開口部を形成
する外部電極の一方の端部にのみピッチが４ｍｍで頂点
の高さが１．５ｍｍの三角状の異形部を形成し、対向す
る他方の端部はストレート状に形成した。Next, an experimental example will be described. First, a phosphor coating liquid obtained by mixing a cerium / terbium-activated lanthanum phosphate phosphor, polyethylene oxide (water-soluble binder) and water (solvent) was used.
It is applied to the inner surface of an envelope made of lead glass having a length of 5 mm and a length of 360 mm, and is temporarily baked. Next, the light emitting layer at the end of the envelope is peeled off with a brush, and a part of the light emitting layer is forcibly peeled off using a scraper, thereby forming an aperture portion having an opening angle of 75 degrees. The amount of the light emitting layer was 15 mg /
cm 2 . Next, a paste-like conductive member coating liquid containing carbon is transferred and applied to the inner surface of one end where the light-emitting layer has been removed in an endless ring shape having a width of 1 mm, and baked. Hereinafter, a rare gas discharge lamp was manufactured in the same manner as in the prior art shown in FIG. The distance between the conductive member and the end of the external electrode is 2 mm. An aluminum foil having a width of 8 mm is used for the pair of external electrodes, and one end of the external electrode forming the second opening. Only a triangular deformed portion having a pitch of 4 mm and a height of a vertex of 1.5 mm was formed only at the other end, and the other opposite end was formed in a straight shape.
【００５２】この希ガス放電灯１０本を図１８に示す点
灯装置に順次に組み込むと共に、これらを、その周辺の
照度が０．０１Ｌｘ以下の暗黒状態に２４時間放置した
後に、一対の外部電極間に周波数が６２ＫＨｚ，電圧が
１５００Ｖ0-P のパルス状の高周波電圧を印加し、完全
に点灯するまでの時間（点灯時間）を測定したところ、
すべての希ガス放電灯は２０００ｍＳ以下で点灯し、点
灯時間のバラツキも小さかった。The ten rare gas discharge lamps are sequentially assembled in the lighting device shown in FIG. 18, and after they are left in a dark state where the illuminance around them is 0.01 Lx or less for 24 hours, a pair of external electrodes are connected. A pulsed high-frequency voltage having a frequency of 62 KHz and a voltage of 1500 V 0-P was applied to the device, and the time required for complete lighting (lighting time) was measured.
All the rare gas discharge lamps were turned on at 2000 mS or less, and the variation of the lighting time was small.
【００５３】[0053]
【発明の効果】以上のように本発明によれば、導電部材
は外部電極に対向しない外囲器の端部内面にほぼ帯状に
形成されているために、希ガス放電灯の設置環境が外来
光の乏しい状態であっても、外部電極に高周波電圧を印
加することによって短い時間で確実に点灯させることが
できるし、点灯時間のバラツキも小さくできる。又、導
電部材は光遮蔽体として作用するものの、外部電極に対
向せず、しかも発光層が形成されていない外囲器の端部
内面に形成されているために、第１の開口から放出され
る光を有効に利用することができるし、発光層などの変
色を防止できる。As described above, according to the present invention, since the conductive member is formed in a substantially band shape on the inner surface of the end portion of the envelope that does not face the external electrode, the installation environment of the rare gas discharge lamp is external. Even in a state where light is scarce, by applying a high-frequency voltage to the external electrodes, lighting can be performed reliably in a short time, and variation in lighting time can be reduced. Further, although the conductive member functions as a light shield, it does not face the external electrode and is formed on the inner surface of the end of the envelope where the light emitting layer is not formed, so that the conductive member is emitted from the first opening. Light can be used effectively and discoloration of the light emitting layer and the like can be prevented.
【００５４】又、外囲器の端部には発光層が形成されて
いないために、それぞれの端部を例えばトップシールに
よって封止する際に、封止部分に蛍光体が噛み込まれる
ことがなくなり、確実に封止することができる。従っ
て、製造過程或いは製品化された後に、封止部分が破損
されるというトラブルの発生が激減し、製品の品位を高
めることができる。Further, since the light emitting layer is not formed at the end of the envelope, when each end is sealed with, for example, a top seal, the phosphor may be caught in the sealed portion. And can be reliably sealed. Therefore, the occurrence of troubles in which the sealing portion is damaged after the manufacturing process or after the product is manufactured is drastically reduced, and the quality of the product can be improved.
【００５５】さらには、外部電極に適宜の異形部を形成
すれば、異形部に電界が集中する関係で始動特性を改善
できるし、暗黒状態では異形部及び導電部材の存在と相
俟って短時間内に確実に点灯させることができる。Furthermore, if an appropriate deformed portion is formed on the external electrode, the starting characteristics can be improved due to the concentration of the electric field on the deformed portion. In the dark state, the starting characteristics can be shortened due to the presence of the deformed portion and the conductive member. It can be lit reliably within the time.
【図１】本発明の第１の実施例を示す縦断面図。FIG. 1 is a longitudinal sectional view showing a first embodiment of the present invention.
【図２】図１の要部破断面図。FIG. 2 is a fragmentary cross-sectional view of FIG. 1;
【図３】図２のＸ−Ｘ断面図。FIG. 3 is a sectional view taken along line XX of FIG. 2;
【図４】図１の外囲器及び外部電極部分の展開図。FIG. 4 is an exploded view of the envelope and external electrode portions of FIG. 1;
【図５】製造方法を説明するための図であって、同図
（ａ）は発光層の形成状態を示す側断面図、同図（ｂ）
は両端の発光層を除去した状態を示す図、同図（ｃ）は
アパーチャ部を形成した状態を示す縦断面図、同図
（ｄ）は一方の端部内面に導電部材をリング状に形成し
た状態を示す側断面図。5A and 5B are views for explaining a manufacturing method, in which FIG. 5A is a side sectional view showing a state of forming a light emitting layer, and FIG.
Is a view showing a state in which light emitting layers at both ends are removed, FIG. (C) is a longitudinal sectional view showing a state in which an aperture is formed, and FIG. (D) is a figure in which a conductive member is formed in a ring shape on the inner surface of one end. FIG.
【図６】動作原理を説明するための概略図。FIG. 6 is a schematic diagram for explaining the operation principle.
【図７】本発明の第２の実施例を示す縦断面図。FIG. 7 is a longitudinal sectional view showing a second embodiment of the present invention.
【図８】本発明の第３の実施例を示す縦断面図。FIG. 8 is a longitudinal sectional view showing a third embodiment of the present invention.
【図９】本発明の第４の実施例を示す縦断面図。FIG. 9 is a longitudinal sectional view showing a fourth embodiment of the present invention.
【図１０】本発明の第５の実施例を示す縦断面図。FIG. 10 is a longitudinal sectional view showing a fifth embodiment of the present invention.
【図１１】本発明の第６の実施例を示す縦断面図。FIG. 11 is a longitudinal sectional view showing a sixth embodiment of the present invention.
【図１２】本発明の第７の実施例を示す外囲器及び外部
電極部分の展開図。FIG. 12 is an exploded view of an envelope and external electrode portions showing a seventh embodiment of the present invention.
【図１３】本発明の第８の実施例を示す外囲器及び外部
電極部分の展開図。FIG. 13 is an exploded view of an envelope and an external electrode portion showing an eighth embodiment of the present invention.
【図１４】先行技術にかかる希ガス放電灯の縦断面図。FIG. 14 is a longitudinal sectional view of a rare gas discharge lamp according to the prior art.
【図１５】先行技術にかかるシート構体の展開図。FIG. 15 is a developed view of a seat structure according to the prior art.
【図１６】図１５のＹ−Ｙ断面図。FIG. 16 is a sectional view taken along line YY of FIG. 15;
【図１７】先行技術にかかる希ガス放電灯の製造方法を
説明するための縦断面図。FIG. 17 is a longitudinal sectional view for explaining a method for manufacturing a rare gas discharge lamp according to the prior art.
【図１８】先行技術にかかる希ガス放電灯の点灯装置の
電気回路図。FIG. 18 is an electric circuit diagram of a lighting device for a rare gas discharge lamp according to the prior art.
【図１９】図１８の動作を説明するための図であって、
同図（ａ）は駆動回路からの出力信号図、同図（ｂ）は
スイッチング素子の動作タイミング図、同図（ｃ）はコ
イル電流の波形図、同図（ｄ）はランプ電流図、同図
（ｅ）は発光波形図。FIG. 19 is a diagram for explaining the operation of FIG. 18;
5A is a diagram showing an output signal from the driving circuit, FIG. 5B is an operation timing diagram of the switching element, FIG. 5C is a waveform diagram of the coil current, and FIG. 5D is a lamp current diagram. FIG. 7E is a light emission waveform diagram.
【図２０】図１９の拡大図であって、同図（ａ）はスイ
ッチング素子の動作タイミング図、同図、同図（ｂ）は
ランプ電流図。20 is an enlarged view of FIG. 19, wherein FIG. 20 (a) is an operation timing chart of the switching element, and FIG. 20 (b) is a lamp current chart.
ＤＬ 希ガス放電灯 ＨＡ 点灯装置 ＣＳ 導電部材 １ 外囲器 １ａ 端部 ２ 発光層 ２ａ アパーチャ部 ３ シート構体 ４，４Ａ 透光性シート（絶縁部材） ５，６ 外部電極 ５Ａ，６Ａ 異形部 ７ 第１の開口部 ８ 第２の開口部 ９ 接着層 １２ 保護チューブ（絶縁部材） DL rare gas discharge lamp HA lighting device CS conductive member 1 envelope 1a end 2 light emitting layer 2a aperture 3 sheet structure 4,4A translucent sheet (insulating member) 5,6 external electrode 5A, 6A deformed portion 7th 1 opening 8 second opening 9 adhesive layer 12 protective tube (insulating member)
Claims (8)
ガスを封入してなる外囲器と、外囲器の外周面に、それ
の端部を除く長手方向部分に第１，第２の開口部が形成
されるように互いに離隔して配置した金属部材よりなる
一対の帯状の外部電極と、外部電極の配置されていない
外囲器の端部に対応する外囲器内面にほぼ帯状に形成し
た導電部材とを具備したことを特徴とする希ガス放電
灯。1. An envelope having a light emitting layer on an inner surface and a rare gas sealed in an inner space, and an outer peripheral surface of the envelope, and a first and a second portions on a longitudinal portion excluding an end thereof. A pair of strip-shaped external electrodes made of a metal member arranged apart from each other so as to form a second opening, and an inner surface of the envelope corresponding to an end of the envelope where the external electrodes are not arranged. A rare gas discharge lamp comprising: a conductive member formed substantially in a belt shape.
ガスを封入してなる外囲器と、外囲器の外周面に、それ
の端部を除く長手方向部分に第１，第２の開口部が形成
されるように互いに離隔して配置した金属部材よりなる
一対の帯状の外部電極と、外部電極の配置されていない
外囲器の端部に対応する外囲器内面にほぼ帯状に形成し
た導電部材と、外囲器の外周面に、外部電極が被覆され
るように装着した透光性の絶縁部材とを具備したことを
特徴とする希ガス放電灯。2. An envelope having a light-emitting layer on an inner surface and a rare gas sealed in an inner space, and an outer peripheral surface of the envelope, and a first and a second portions on a longitudinal portion excluding an end thereof. A pair of strip-shaped external electrodes made of a metal member arranged apart from each other so as to form a second opening, and an inner surface of the envelope corresponding to an end of the envelope where the external electrodes are not arranged. A rare gas discharge lamp comprising: a conductive member having a substantially band shape; and a light-transmitting insulating member mounted on an outer peripheral surface of an envelope so as to cover an external electrode.
縮性樹脂よりなる保護チューブにて構成したことを特徴
とする請求項２に記載の希ガス放電灯。3. The rare gas discharge lamp according to claim 2, wherein the insulating member is formed of a protective sheet made of a light-transmitting sheet or a heat-shrinkable resin.
ガスを封入してな外囲器と、外囲器の全長とほぼ同程度
の長さを有する透光性シートの一方の面に長さが外囲器
の全長より短い金属部材よりなる一対の帯状の外部電極
を、第１，第２の開口部が形成されるように互いに離隔
して配置し、かつ外部電極の位置する側の透光性シート
面及び外部電極面に接着層を形成してなるシート構体と
を具備し、前記外囲器の外周面にシート構体を、外囲器
と透光性シートとの間に外部電極が位置するように巻回
し、かつ外部電極の配置されていない外囲器の端部に対
応する外囲器内面に導電部材がほぼ帯状に形成されてい
ることを特徴とする希ガス放電灯。4. An envelope having a light-emitting layer on an inner surface and a rare gas sealed in an inner space, and one of a translucent sheet having a length substantially equal to the entire length of the envelope. A pair of strip-shaped external electrodes made of a metal member whose length is shorter than the entire length of the envelope are arranged on the surface so as to be separated from each other so as to form first and second openings, and the position of the external electrodes A sheet structure in which an adhesive layer is formed on the light-transmitting sheet surface on the side to be bonded and the external electrode surface, and a sheet structure on the outer peripheral surface of the envelope, between the envelope and the translucent sheet. A rare gas in which a conductive member is formed in a substantially strip shape on the inner surface of the envelope corresponding to the end of the envelope in which the external electrode is not disposed, and Discharge lamp.
鉛，アルミニウム，酸化錫，酸化インジウム，バリウ
ム，ニッケル又はこれらを含む物質であることを特徴と
する請求項１，２，４のいずれかに記載の希ガス放電
灯。5. The method according to claim 1, wherein the conductive member is carbon, silver, zinc oxide, aluminum, tin oxide, indium oxide, barium, nickel, or a substance containing these. A rare gas discharge lamp as described.
おらず、かつ発光層が形成されていない外囲器の端部に
対応する外囲器内面にほぼ帯状の無端リング状に形成し
たことを特徴とする請求項１，２，４のいずれかに記載
の希ガス放電灯。6. The conductive member is formed in a substantially band-like endless ring shape on the inner surface of the envelope corresponding to the end of the envelope where the external electrode is not arranged and the light emitting layer is not formed. The rare gas discharge lamp according to any one of claims 1, 2, and 4.
おらず、かつ発光層が形成されていない外囲器の端部に
対応する外囲器内面にほぼ帯状の有端リング状又は円弧
状に形成したことを特徴とする請求項１，２，４のいず
れかに記載の希ガス放電灯。7. An endless ring or circle having a substantially band shape on an inner surface of an envelope corresponding to an end of an envelope on which an external electrode is not disposed and a light emitting layer is not formed. 5. The rare gas discharge lamp according to claim 1, wherein the lamp is formed in an arc shape.
内面に、発光層の形成されていないアパーチャ部を形成
したことを特徴とする請求項１，２，４のいずれかに記
載の希ガス放電灯。8. An aperture according to claim 1, wherein an aperture in which a light emitting layer is not formed is formed on an inner surface of the envelope substantially corresponding to the first opening. Rare gas discharge lamp.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000063273A JP3667587B2 (en) | 2000-03-03 | 2000-03-03 | Noble gas discharge lamp and method for manufacturing the same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000063273A JP3667587B2 (en) | 2000-03-03 | 2000-03-03 | Noble gas discharge lamp and method for manufacturing the same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2001250511A true JP2001250511A (en) | 2001-09-14 |
| JP3667587B2 JP3667587B2 (en) | 2005-07-06 |
Family
ID=18583165
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2000063273A Expired - Lifetime JP3667587B2 (en) | 2000-03-03 | 2000-03-03 | Noble gas discharge lamp and method for manufacturing the same |
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| Country | Link |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006100276A (en) * | 2004-09-29 | 2006-04-13 | Patent Treuhand Ges Elektr Gluehlamp Mbh | Illumination system equipped with dielectric barrier discharge lamp and attendant ballast resistor |
| JP2008135194A (en) * | 2006-11-27 | 2008-06-12 | Ushio Inc | Light source device |
-
2000
- 2000-03-03 JP JP2000063273A patent/JP3667587B2/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006100276A (en) * | 2004-09-29 | 2006-04-13 | Patent Treuhand Ges Elektr Gluehlamp Mbh | Illumination system equipped with dielectric barrier discharge lamp and attendant ballast resistor |
| JP2008135194A (en) * | 2006-11-27 | 2008-06-12 | Ushio Inc | Light source device |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3667587B2 (en) | 2005-07-06 |
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