JP2000311659A - Outer surface electrode fluorescent lamp - Google Patents
Outer surface electrode fluorescent lampInfo
- Publication number
- JP2000311659A JP2000311659A JP11968299A JP11968299A JP2000311659A JP 2000311659 A JP2000311659 A JP 2000311659A JP 11968299 A JP11968299 A JP 11968299A JP 11968299 A JP11968299 A JP 11968299A JP 2000311659 A JP2000311659 A JP 2000311659A
- Authority
- JP
- Japan
- Prior art keywords
- glass
- fluorescent lamp
- glass tube
- electrode fluorescent
- external 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.)
- Pending
Links
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、スキャナーやコピ
ーなどにおける原稿読取り、あるいは液晶表示装置のバ
ックライト用光源に適する外面電極蛍光ランプに関す
る。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an external electrode fluorescent lamp suitable for reading an original in a scanner or a copying machine, or as a light source for a backlight of a liquid crystal display device.
【０００２】[0002]
【従来の技術】たとえばスキャナー、コピー、液晶表示
装置などは、その普及とともに、高性能、長寿命化要求
されており、それらの構成において、原稿読取りや背面
光源に使用する蛍光ランプの高性能化などが進められて
いる。すなわち、この種の蛍光ランプ（放電灯）は、希
ガス放電であるため、明るさや放電電圧が周囲温度にほ
とんど影響されず、寿命も長いなどの特長が利用されて
いる。2. Description of the Related Art For example, scanners, copiers, liquid crystal display devices and the like have been required to have higher performance and longer life with their spread. And so on. That is, since this type of fluorescent lamp (discharge lamp) is a rare gas discharge, its features such as brightness and discharge voltage are hardly affected by the ambient temperature and its life is long are utilized.
【０００３】そして、高性能化を図った蛍光ランプとし
て、内壁面に蛍光体被膜が形成され、かつ水銀およびキ
セノンなどの希ガスが封入されたガラス管と、前記ガラ
ス管の外周面に、そのほぼ全長に亘って、一方は幅広の
間隔で、他方は幅狭の間隔で一体的に、外部接続用リー
ドに連接する一対の帯状電極層を添設させた構成の外面
電極蛍光ランプが開発されている。As a high performance fluorescent lamp, a glass tube in which a phosphor film is formed on the inner wall surface and in which a rare gas such as mercury and xenon is sealed, and an outer peripheral surface of the glass tube, An external electrode fluorescent lamp having a configuration in which a pair of band-shaped electrode layers connected to external connection leads are added integrally over substantially the entire length, one at a wide interval and the other at a narrow interval. ing.
【０００４】図３ (a)は従来の外面電極蛍光ランプの一
構成例を示す横断面図、図３ (b)，(c)は従来の互いに
異なる外面電極蛍光ランプの構成を示す縦断面図であ
る。FIG. 3 (a) is a cross-sectional view showing an example of a configuration of a conventional external electrode fluorescent lamp, and FIGS. 3 (b) and 3 (c) are longitudinal sectional views showing configurations of different conventional external electrode fluorescent lamps. It is.
【０００５】図３ (a)， (b)， (c)において、１は発光
管として機能する気密封止のガラス管、２は前記ガラス
管１の内壁面に管軸方向に沿って一定の幅を除いて形成
された蛍光体被膜である。ここで、ガラス管１は、たと
えば外径 6〜10mm，長さ 100〜 400mm程度で、放電媒体
としての希ガス、たとえばキセノンガスを主体とした希
ガス、もしくは水銀−希ガス系が封入されている。な
お、前記ガラス管１は、一般的に、比誘電率が 6.8程
度、もしくは誘電正接（tan δ）が0.0012程度の鉛を含
むガラス製、または鉛を含有しないガラス製である。In FIGS. 3 (a), 3 (b) and 3 (c), reference numeral 1 denotes a hermetically sealed glass tube which functions as an arc tube, and 2 denotes an inner wall of the glass tube 1 which is fixed along the tube axis direction. It is a phosphor film formed except for the width. Here, the glass tube 1 has, for example, an outer diameter of about 6 to 10 mm and a length of about 100 to 400 mm, and is filled with a rare gas as a discharge medium, for example, a rare gas mainly composed of xenon gas, or a mercury-rare gas system. I have. The glass tube 1 is generally made of lead-containing glass having a relative dielectric constant of about 6.8 or a dielectric loss tangent (tan δ) of about 0.0012, or a glass containing no lead.
【０００６】また、3a，3bは前記ガラス管１の外周面に
管軸方向ほぼ全長に亘って、一方は幅広の間隔 L1 で、
他方は幅狭の間隔 L2 で一体的に添設された一対の帯状
電極層、たとえば幅 5〜10mm程度、厚さ20〜 100μm 程
度のアルミニウム箔などの導電性膜である。ここで、一
対の帯状電極層3a，3bは、一般的に、発光放射面となる
側の極間を幅広 L1 に設定する一方、高輝度を得るため
に非発光放射面となる側の極間を幅狭 L2 に設定され
る。Further, 3a, 3b is over the tube axis direction almost the entire length on the outer peripheral surface of the glass tube 1, one at wide intervals L 1,
The other narrow pair of strip electrode layer integrally additionally provided at intervals L 2 of, for example, a width 5~10mm about a conductive film such as thickness. 20 to 100 [mu] m approximately aluminum foil. Here, a pair of strip-shaped electrode layers 3a, 3b are generally emission while between radiation surface to become the side pole set wider L 1, the side of the electrode comprising a non-emission radiation surface in order to obtain a high luminance It is set between the narrow L 2.
【０００７】さらに、4a，4bは前記一対の帯状電極層3
a，3bに半田付けもしくは導電性接着剤にて接続された
リード端子、5a，5bは前記リード端子4a，4bにそれぞれ
半田付けにより電気的に接続された外部接続用リードで
ある。なお、このような外面電極蛍光ランプにおいて
は、帯状電極層3a，3bを含むガラス管１の外周面を被覆
・保護するために、透光性樹脂フィルム６で被覆した構
成も採られる。つまり、透光性樹脂フィルム６の外周面
被覆で、外装ないしガラス管１の保護に寄与する一方、
帯状電極層3a，3bにおける沿面放電の防止など絶縁性を
確保する。Further, reference numerals 4a and 4b denote the pair of strip-shaped electrode layers 3 respectively.
Lead terminals a and 3b are connected to the lead terminals 4a and 4b by soldering or conductive adhesive, respectively, and external connection leads 5a and 5b are respectively connected to the lead terminals 4a and 4b by soldering. In addition, in such an external electrode fluorescent lamp, in order to cover and protect the outer peripheral surface of the glass tube 1 including the strip-shaped electrode layers 3a and 3b, a configuration in which the glass tube 1 is covered with a translucent resin film 6 is also adopted. That is, while the outer peripheral surface coating of the translucent resin film 6 contributes to protection of the exterior or the glass tube 1,
Insulation such as prevention of creeping discharge in the strip electrode layers 3a and 3b is ensured.
【０００８】上記外面電極蛍光ランプは、外部接続用リ
ード5a，5bおよびリード端子4a，4bを介して前記帯状電
極層3a，3bに、所要の高周波電圧を印加（たとえば20〜
100KHz， 1〜 2KVの電力を供給）すると、帯状電極層3
a，3b間で放電が開始し、ガラス管１内で紫外線を放射
する。こうして放射された紫外線が、ガラス管１内壁面
の蛍光体被膜２によって、可視光線に変換されて蛍光ラ
ンプ光源として機能する。In the external electrode fluorescent lamp, a required high-frequency voltage is applied to the strip-shaped electrode layers 3a and 3b via the external connection leads 5a and 5b and the lead terminals 4a and 4b (for example, 20 to 20 V).
When 100KHz, 1-2KV power is supplied), the strip electrode layer 3
Discharge starts between a and 3b, and ultraviolet rays are radiated in the glass tube 1. The emitted ultraviolet light is converted into visible light by the phosphor coating 2 on the inner wall surface of the glass tube 1 and functions as a fluorescent lamp light source.
【０００９】[0009]
【発明が解決しようとする課題】上記構成の外面電極蛍
光ランプは、発光効率が良好で、安定した点灯など行い
易いという利点を有するが、実用上、次のような不都合
がある。すなわち、上記鉛を含まないガラス、あるいは
鉛を含むガラスを発光ガラス管１の素材とした場合は、
鉛を含むガラス製発光ガラス管１を有する蛍光ランプの
方が、入力電力当たりの光量を大きくできるとはいえ、
省エネルギーないし光量の点で、なお、問題がある。The external electrode fluorescent lamp having the above-mentioned structure has the advantage that the luminous efficiency is good and it is easy to perform stable lighting and the like, but it has the following disadvantages in practical use. That is, when the glass containing no lead or the glass containing lead is used as the material of the light emitting glass tube 1,
Although the fluorescent lamp having the light-emitting glass tube 1 made of glass containing lead can increase the amount of light per input power,
There is still a problem in terms of energy saving or light quantity.
【００１０】換言すると、スキャナーやコピーなどにお
ける原稿読取り用光源、あるいは液晶表示装置のバック
ライト用光源などにおいては、省エネルギー形で大光量
化が求められている。しかし、従来の外面電極蛍光ラン
プの場合は、省エネルギーないし大光量化の点で問題が
あり、上記要望に対応できない状況にある。In other words, a light source for reading a document in a scanner or a copy, a light source for a backlight of a liquid crystal display device, or the like is required to have a large light amount in an energy-saving type. However, in the case of the conventional external electrode fluorescent lamp, there is a problem in saving energy or increasing the amount of light, and it is not possible to meet the above demand.
【００１１】本発明は、上記事情に対処してなされたも
ので、省エネルギー形ないし大光量化した外面電極蛍光
ランプの提供を目的とする。The present invention has been made in view of the above circumstances, and has as its object to provide an energy-saving or large-intensity external electrode fluorescent lamp.
【００１２】[0012]
【課題を解決するための手段】請求項１の発明は、内壁
面に蛍光体被膜が形成され、かつキセノンガスを含む放
電媒体が封入されたガラス管と、前記ガラス管の外周面
に、管軸方向ほぼ全長に亘って一方は幅広の間隔で、他
方は幅狭の間隔で添設された一対の帯状電極層と、を有
する外面電極蛍光ランプであって、前記ガラス管は、比
誘電率が 7.0以上のガラス製であることを特徴とする外
面電極蛍光ランプである。According to the first aspect of the present invention, there is provided a glass tube in which a phosphor film is formed on an inner wall surface and a discharge medium containing xenon gas is sealed, and a tube is provided on an outer peripheral surface of the glass tube. An outer electrode fluorescent lamp having one pair at a wide interval and another pair at a narrow interval over the entire length in the axial direction, and the glass tube has a relative dielectric constant. Is an outer electrode fluorescent lamp characterized by being made of glass of 7.0 or more.
【００１３】請求項２の発明は、請求項１記載の外面電
極蛍光ランプにおいて、比誘電率が7.0以上のガラスは
鉛を含まないガラスであることを特徴とする。According to a second aspect of the present invention, in the external electrode fluorescent lamp according to the first aspect, the glass having a relative dielectric constant of 7.0 or more is a glass containing no lead.
【００１４】請求項１，２の発明は、次のような知見に
基づいてなされたものである。すなわち、本発明者は、
外面電極蛍光ランプの光量対策を鋭意検討した結果、比
誘電率が 7.0以上のガラスを発光ガラス管の素材とした
場合、省エネルギ形で大光量化も可能になることを見出
した。また、前記比誘電率が 7.0以上のガラスとして、
鉛成分を含まないガラスを選択すると、環境問題にも対
応できる。The first and second aspects of the present invention have been made based on the following findings. That is, the present inventor:
As a result of intensive studies on measures for the light intensity of the external electrode fluorescent lamp, it was found that when glass having a relative dielectric constant of 7.0 or more was used as the material of the light-emitting glass tube, it was possible to save energy and increase the light intensity. Further, as the glass having a relative dielectric constant of 7.0 or more,
Selecting glass that does not contain lead components can also address environmental issues.
【００１５】請求項１，２の発明において、発光ガラス
管を構成する比誘電率が 7.0以上のガラスとしては、た
とえば SiO2 −Al2 O 3 − TiO2 系ガラスなどが挙げら
れる。[0015] In the invention of claim 1, the glass dielectric constant of 7.0 or more which constitutes a luminous glass tube, for example, SiO 2 -Al 2 O 3 -, such as TiO 2 system glass.
【００１６】請求項３の発明は、内壁面に蛍光体被膜が
形成され、かつキセノンガスを含む放電媒体が封入され
たガラス管と、前記ガラス管の外周面に、管軸方向ほぼ
全長に亘って一方は幅広の間隔で、他方は幅狭の間隔で
添設された一対の帯状電極層と、を有する外面電極蛍光
ランプであって、前記ガラス管は、誘電正接（tan δ）
が0.001 以下のガラス製であることを特徴とする外面電
極蛍光ランプである。According to a third aspect of the present invention, there is provided a glass tube in which a phosphor film is formed on an inner wall surface and in which a discharge medium containing xenon gas is sealed, and an outer peripheral surface of the glass tube extending over substantially the entire length in the tube axis direction. Wherein the glass tube has a dielectric loss tangent (tan δ), one of which has a wide interval and the other has a pair of strip-shaped electrode layers provided at a narrow interval.
Is an outer surface electrode fluorescent lamp characterized in that it is made of glass of 0.001 or less.
【００１７】請求項４の発明は、請求項３記載の外面電
極蛍光ランプにおいて、誘電正接（tan δ）が0.001 以
下のガラスは鉛を含まないガラスであることを特徴とす
る。According to a fourth aspect of the present invention, in the external electrode fluorescent lamp according to the third aspect, the glass having a dielectric loss tangent (tan δ) of 0.001 or less is a glass containing no lead.
【００１８】請求項３，４の発明は、次のような知見に
基づいてなされたものである。すなわち、本発明者は、
外面電極蛍光ランプの光量対策を鋭意検討した結果、誘
電正接（tan δ）が0.001 以下のガラスを発光ガラス管
の素材とした場合、省エネルギ形で大光量化も可能にな
ることを見出した。また、誘電正接が0.001 以下のガラ
スとして、鉛成分を含まないガラスを選択すると、環境
問題にも対応できる。The third and fourth aspects of the present invention have been made based on the following findings. That is, the present inventor:
As a result of intensive studies on measures for the light intensity of the external electrode fluorescent lamp, it has been found that when a glass having a dielectric loss tangent (tan δ) of 0.001 or less is used as the material of the light emitting glass tube, it is possible to save energy and increase the light intensity. If a glass containing no lead component is selected as the glass having a dielectric loss tangent of 0.001 or less, it is possible to cope with environmental issues.
【００１９】請求項３，４の発明において、発光ガラス
管を構成する誘電正接（tan δ）が0.001 以下のガラス
としては、たとえば SiO2 −Al2 O 3 − TiO2 系ガラ
ス、SiO2 −Al2 O 3 − B2 O 3 系ガラスなどが挙げら
れる。In the third and fourth aspects of the present invention, the glass constituting the light emitting glass tube having a dielectric loss tangent (tan δ) of 0.001 or less is, for example, SiO 2 —Al 2 O 3 —TiO 2 based glass, SiO 2 —Al 2 2 O 3 -B 2 O 3 glass and the like.
【００２０】請求項１ないし４の発明において、放電媒
体は、たとえばネオンガス、キセノンガス、キセノンガ
スを主体とした希ガス類、あるいは前記の希ガスおよび
水銀の混合系が挙げられる。In the first to fourth aspects of the present invention, the discharge medium may be, for example, neon gas, xenon gas, a rare gas mainly composed of xenon gas, or a mixed system of the above rare gas and mercury.
【００２１】請求項１ないし４の発明に係る外面電極蛍
光ランプは、発光ガラス管の外周面に一対の帯状電極層
を添設するとき、同時に透光性樹脂フィルムによる被覆
保護を行う方式を採ることができる。つまり、透光性樹
脂フィルム片の一主面に、一対の帯状電極層を予め担持
させておき、かつその透光性樹脂フィルム片の端縁部
に、一方の帯状電極層の端縁を重ねるように巻き付け・
固定するため、製造工程の簡略化による生産性の向上と
ともに、帯状電極層間の絶縁性も確実化が図られる。The external electrode fluorescent lamp according to the first to fourth aspects of the present invention employs a method in which a pair of strip-shaped electrode layers are provided on the outer peripheral surface of the light-emitting glass tube, and at the same time, the coating is protected by a translucent resin film. be able to. In other words, a pair of strip-shaped electrode layers is previously supported on one main surface of the light-transmitting resin film piece, and the edge of one strip-shaped electrode layer is overlapped with the edge of the light-transmitting resin film piece. Wrapping
Since the fixing is performed, the productivity is improved by simplifying the manufacturing process, and the insulation between the strip-shaped electrode layers is also ensured.
【００２２】また、請求項１ないし４の発明において、
発光ガラス管の外周面に設けられた一対の帯状電極層
は、単純な帯状（直線形）に限られるものでなく、たと
えば櫛形、波形、櫛形や波形の高さもしくはピッチを変
えたもの、あるいは光透過形のいずれでもよい。Also, in the invention of claims 1 to 4,
The pair of strip-shaped electrode layers provided on the outer peripheral surface of the light-emitting glass tube is not limited to a simple strip (linear), but may be, for example, a comb, a wave, a comb or a wave whose height or pitch is changed, or Any of a light transmission type may be used.
【００２３】[0023]
【発明の実施の形態】以下、図１および図２を参照して
実施例を説明する。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment will be described below with reference to FIGS.
【００２４】図１は、第１の実施例に係る外面電極蛍光
ランプの要部構成を示す横断面図である。図１におい
て、７は発光管として機能する気密封止のガラス管、８
は前記ガラス管７の内壁面に管軸方向に沿って一定の幅
を除いて形成された蛍光体被膜である。ここで、ガラス
管７は、たとえば比誘電率11.1のガラス製で、外径10.0
mm、肉厚 0.5mm、長さ 370mm程度で、放電媒体としての
希ガス、たとえばキセノンガスが13.3 kPa封入されてい
る。FIG. 1 is a cross-sectional view showing the structure of a main part of the external electrode fluorescent lamp according to the first embodiment. In FIG. 1, reference numeral 7 denotes a hermetically sealed glass tube functioning as an arc tube;
Is a phosphor coating formed on the inner wall surface of the glass tube 7 except for a certain width along the tube axis direction. Here, the glass tube 7 is made of, for example, glass having a relative dielectric constant of 11.1 and has an outer diameter of 10.0.
It has a thickness of about 0.5 mm, a thickness of about 0.5 mm, and a length of about 370 mm, and is filled with a rare gas such as xenon gas as a discharge medium at 13.3 kPa.
【００２５】また、9a，9bは前記ガラス管７の外周面に
管軸方向ほぼ全長に亘って、一方は幅広の間隔 L1 で、
他方は幅狭の間隔 L2 で一体的に添設された一対の帯状
電極層、たとえば幅10mm程度、厚さ 5μm 程度のアルミ
ニウム箔などの導電性膜である。ここで、一対の帯状電
極層9a，9bは、一般的に、発光放射面と成る側の極間
（対向端縁間）を幅広 L1 に設定する一方、高照度を得
るために非発光放射面となる側の極間（対向端縁間）を
幅狭 L2 に設定されるとともに、接着剤層を介して一体
化されている。Further, 9a, 9b is over tube axis direction almost the entire length on the outer peripheral surface of the glass tube 7, one at wide intervals L 1,
The other narrow pair of strip electrode layer integrally additionally provided at intervals L 2 of, for example, a width of about 10mm, a conductive film such as an aluminum foil having a thickness of about 5 [mu] m. Here, a pair of strip-shaped electrode layers 9a, 9b are generally while setting machining gap side serving as a light-emitting emitting surface (between the facing edges) wider L 1, the non-emission radiation in order to obtain a high illuminance while being set face to become the side machining gap a (between opposing edges) the narrow L 2, it is integrated via an adhesive layer.
【００２６】さらに、要すれば、前記図３(c) に図示し
た構成の場合と同様に、帯状電極層9a，9bを含むガラス
管７の外周面に、たとえば熱収縮性の透光性樹脂フィル
ムを一体的に被覆し、保護する構成を採ることもでき
る。なお、透光性樹脂フィルム10は、外装ないしガラス
管７の保護に寄与する一方、帯状電極層9a，9bにおける
沿面放電の防止など絶縁性を確保する。Further, if necessary, as in the case of the configuration shown in FIG. 3 (c), for example, a heat-shrinkable translucent resin may be provided on the outer peripheral surface of the glass tube 7 including the strip-shaped electrode layers 9a and 9b. A configuration in which the film is integrally covered and protected may be employed. In addition, the translucent resin film 10 contributes to protection of the exterior or the glass tube 7, while securing insulation such as prevention of creeping discharge in the strip-shaped electrode layers 9a and 9b.
【００２７】なお、この構成において、帯状電極層9a，
9bが透光性樹脂フィルムの幅方向ほぼ中央端縁部に担持
させ、かつガラス管７の外周面に一体的に対接するとと
もに、帯状電極層9a，9bの極間が幅狭 L2 な端縁部分で
は、一方の端縁部が両面をガラス管７外周面と帯状電極
層9bとで挟むと、（透光性樹脂フィルムで挟まれ２層構
造化）、対向する極間が幅狭 L2 な端縁同士の絶縁距離
が大きく設定されるため、絶縁性が十分に確保される。In this configuration, the strip-shaped electrode layers 9a,
9b is supported on a substantially central edges widthwise of the translucent resin film, and with integrally paired contact with the peripheral surface of the glass tube 7, the strip electrode layer 9a, inter 9b pole narrow L 2 of the end In the edge portion, when one edge portion is sandwiched on both sides between the outer peripheral surface of the glass tube 7 and the strip-shaped electrode layer 9b (a two-layer structure sandwiched between light-transmitting resin films), the gap between the opposed poles is narrow. Since the insulation distance between the two edges is set to be large, sufficient insulation is ensured.
【００２８】上記したごとく、この実施例に係る外部電
極蛍光ランプは、帯状電極層9a，9bに、電力供給手段を
介して、たとえば20〜 100 KHz， 1〜 2KVの高周波電圧
を印加すると、帯状電極層9a，9b間電圧で、ガラス管７
内で放電が起こって紫外線を放射する。ここで、放射さ
れた紫外線は、ガラス管７内壁面の蛍光体被膜によって
可視光に変換され、ガラス管７外に可視光を照射し、省
エネルギー形で、光量の大きい光源としての作用を行
う。As described above, when the external electrode fluorescent lamp according to this embodiment is applied with a high frequency voltage of, for example, 20 to 100 KHz and 1 to 2 KV via the power supply means to the strip electrode layers 9a and 9b, With the voltage between the electrode layers 9a and 9b, the glass tube 7
Discharge occurs inside and radiates ultraviolet rays. Here, the emitted ultraviolet light is converted into visible light by the phosphor coating on the inner wall surface of the glass tube 7, irradiates the outside of the glass tube 7 with visible light, and acts as an energy-saving type light source with a large amount of light.
【００２９】すなわち、上記構成の外部電極蛍光ランプ
について、消費電力( W)を変えて点灯したときの照度(L
x)を測定したところ、図２の直線Ａで示すような特性が
認められた。That is, the illuminance (L) when the external electrode fluorescent lamp having the above configuration is lit when the power consumption (W) is changed.
When x) was measured, characteristics as shown by the straight line A in FIG. 2 were observed.
【００３０】比較のため、比誘電率が 6.8程度で、鉛成
分を含まないガラスを素材とした発光ガラス管（比較例
１）、もしくは誘電正接（tan δ）が0.0012程度で鉛成
分を含むガラスを素材とした発光ガラス管（比較例２）
を使用した他は、第１の実施例の場合と同様の条件で構
成した外面電極蛍光ランプを用意した。これらの外部電
極蛍光ランプについて、消費電力( W)を変えて点灯した
ときの照度(Lx)を測定したところ、図２の直線ａ（比較
例１）、直線ｂ（比較例２）で示すような特性が認めら
れた。For comparison, a light emitting glass tube made of glass having a relative dielectric constant of about 6.8 and containing no lead component (Comparative Example 1), or a glass containing a lead component having a dielectric loss tangent (tan δ) of about 0.0012. Light-emitting glass tube made of glass (Comparative Example 2)
An external electrode fluorescent lamp was prepared under the same conditions as in the first embodiment, except that was used. When the illuminance (Lx) of these external electrode fluorescent lamps when lit while changing the power consumption (W) was measured, as shown by a straight line a (Comparative Example 1) and a straight line b (Comparative Example 2) in FIG. Characteristic was recognized.
【００３１】また、上記第１の実施例における発光ガラ
ス管７の材質を、誘電正接（tan δ）が0.0008のガラス
に変更した他は、第１の実施例の場合と同様の条件で、
第２の実施例に係る外面電極蛍光ランプを構成した。こ
の外面電極蛍光ランプについて、消費電力( W)を変えて
点灯したときの照度(Lx)を測定したところ、第１の実施
例１の場合と同様の作用効果が認められた。Further, under the same conditions as in the first embodiment, except that the material of the light emitting glass tube 7 in the first embodiment is changed to glass having a dielectric loss tangent (tan δ) of 0.0008.
An external electrode fluorescent lamp according to the second embodiment was configured. When the illuminance (Lx) of the external electrode fluorescent lamp when lit while changing the power consumption (W) was measured, the same operation and effect as in the case of the first embodiment 1 were recognized.
【００３２】さらに、上記各実施例において、発光ガラ
ス管７の材質として、比誘電率が11.1以上、もしくは誘
電正接（tan δ）が0.0008以下で、かつ鉛成分を含まな
いガラスを選択した場合は、前記大光量化とともに、環
境問題の改善に大きく寄与する。Further, in each of the above embodiments, when a material having a relative permittivity of 11.1 or more or a dielectric loss tangent (tan δ) of 0.0008 or less and containing no lead component is selected as the material of the light emitting glass tube 7, In addition, the above-mentioned increase in light amount greatly contributes to improvement of environmental problems.
【００３３】本発明は、上記実施例に限定されるもので
なく、発明の趣旨を逸脱しない範囲でいろいろの変形を
採ることができる。たとえばガラス管の外径、長さ、帯
状電極層の材質や形状、あるいは透光性樹脂フィルムの
素材など外部電極蛍光ランプの用途ないし使用状態に対
応して適宜変更できる。The present invention is not limited to the above embodiment, and various modifications can be made without departing from the spirit of the invention. For example, the external diameter and length of the glass tube, the material and shape of the strip-shaped electrode layer, or the material of the light-transmitting resin film can be appropriately changed according to the use or use state of the external electrode fluorescent lamp.
【００３４】[0034]
【発明の効果】上記説明から分かるように、請求項１〜
４の発明によれば、同じ消費電力( W)では、高い照度(L
x)が容易に得られる。つまり、スキャナーやコピーなど
の原稿読取り、あるいは液晶表示装置のバックライトな
どで要求されている省エネルギー形で、光量の大きい外
面電極蛍光ランプが提供される。As can be seen from the above description, claims 1 to 1
According to the invention of the fourth aspect, at the same power consumption (W), high illuminance (L
x) is easily obtained. In other words, there is provided an external electrode fluorescent lamp having a large light amount in an energy-saving type required for reading a document such as a scanner or a copy or for a backlight of a liquid crystal display device.
【図１】実施例の外部電極蛍光ランプの要部構成を示す
横断面図。FIG. 1 is a cross-sectional view showing a configuration of a main part of an external electrode fluorescent lamp according to an embodiment.
【図２】実施例の外部電極蛍光ランプと、従来の外部電
極蛍光ランプとの消費電力−照度を比較して示す特性
図。FIG. 2 is a characteristic diagram showing a comparison between power consumption and illuminance of the external electrode fluorescent lamp of the embodiment and a conventional external electrode fluorescent lamp.
【図３】従来の外部電極蛍光ランプの要部構成例を示す
もので、 (a)は横断面図、 (b)は縦断面図、 (c)は他の
構成例の縦断面図。3A and 3B show an example of a configuration of a main part of a conventional external electrode fluorescent lamp, in which FIG. 3A is a cross-sectional view, FIG. 3B is a vertical cross-sectional view, and FIG. 3C is a vertical cross-sectional view of another configuration example.
１，７……ガラス管 ２，８……蛍光体被膜 3a，3b，9a，9b……帯状電極層 ６……透明性樹脂フイルム 1, 7: Glass tube 2, 8: Phosphor coating 3a, 3b, 9a, 9b: Strip electrode layer 6: Transparent resin film
Claims (4)
セノンガスを含む放電媒体が封入されたガラス管と、 前記ガラス管の外周面に、管軸方向ほぼ全長に亘って一
方は幅広の間隔で、他方は幅狭の間隔で添設された一対
の帯状電極層と、を有する外面電極蛍光ランプであっ
て、 前記ガラス管は、比誘電率が 7.0以上のガラス製である
ことを特徴とする外面電極蛍光ランプ。1. A glass tube in which a phosphor film is formed on an inner wall surface and in which a discharge medium containing xenon gas is sealed, and one of the glass tubes is formed on an outer peripheral surface of the glass tube over a substantially entire length in a tube axis direction. An external electrode fluorescent lamp having a pair of strip-shaped electrode layers provided at intervals and the other at a narrow interval, wherein the glass tube is made of glass having a relative dielectric constant of 7.0 or more. External electrode fluorescent lamp.
ないガラスであることを特徴とする請求項１記載の外面
電極蛍光ランプ。2. The external electrode fluorescent lamp according to claim 1, wherein the glass having a relative dielectric constant of 7.0 or more is a glass containing no lead.
セノンガスを含む放電媒体が封入されたガラス管と、 前記ガラス管の外周面に、管軸方向ほぼ全長に亘って一
方は幅広の間隔で、他方は幅狭の間隔で添設された一対
の帯状電極層と、を有する外面電極蛍光ランプであっ
て、 前記ガラス管は、誘電正接（tan δ）が0.001 以下のガ
ラス製であることを特徴とする外面電極蛍光ランプ。3. A glass tube in which a phosphor film is formed on an inner wall surface and in which a discharge medium containing xenon gas is sealed. An external electrode fluorescent lamp having a pair of strip-shaped electrode layers provided at intervals and the other at a narrow interval, wherein the glass tube is made of glass having a dielectric loss tangent (tan δ) of 0.001 or less. An external electrode fluorescent lamp, characterized in that:
スは鉛を含まないガラスであることを特徴とする請求項
３記載の外面電極蛍光ランプ。4. The external electrode fluorescent lamp according to claim 3, wherein the glass having a dielectric loss tangent (tan δ) of 0.001 or less is a glass containing no lead.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11968299A JP2000311659A (en) | 1999-04-27 | 1999-04-27 | Outer surface electrode fluorescent lamp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11968299A JP2000311659A (en) | 1999-04-27 | 1999-04-27 | Outer surface electrode fluorescent lamp |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2000311659A true JP2000311659A (en) | 2000-11-07 |
| JP2000311659A5 JP2000311659A5 (en) | 2006-02-02 |
Family
ID=14767450
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11968299A Pending JP2000311659A (en) | 1999-04-27 | 1999-04-27 | Outer surface electrode fluorescent lamp |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2000311659A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2005015606A1 (en) * | 2003-08-08 | 2005-02-17 | Nippon Electric Glass Co., Ltd. | Vessel for external electrode fluorescent lamp |
| WO2005057611A1 (en) * | 2003-12-09 | 2005-06-23 | Matsushita Electric Industrial Co., Ltd. | Light source device, illuminaion device, and liquid crystal display device |
| JP2006269428A (en) * | 2005-03-19 | 2006-10-05 | Schott Ag | Display with back illumination provided with light emission means having external electrode |
| JP2008021546A (en) * | 2006-07-13 | 2008-01-31 | Harison Toshiba Lighting Corp | Dielectric barrier discharge lamp |
| DE102011055486A1 (en) * | 2011-11-18 | 2013-05-23 | Dritte Patentportfolio Beteiligungsgesellschaft Mbh & Co.Kg | High frequency lamp and method for operating a high frequency lamp |
-
1999
- 1999-04-27 JP JP11968299A patent/JP2000311659A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2005015606A1 (en) * | 2003-08-08 | 2005-02-17 | Nippon Electric Glass Co., Ltd. | Vessel for external electrode fluorescent lamp |
| WO2005057611A1 (en) * | 2003-12-09 | 2005-06-23 | Matsushita Electric Industrial Co., Ltd. | Light source device, illuminaion device, and liquid crystal display device |
| US7495376B2 (en) | 2003-12-09 | 2009-02-24 | Panasonic Corporation | Light source device, lighting device, and liquid crystal display device |
| JP2006269428A (en) * | 2005-03-19 | 2006-10-05 | Schott Ag | Display with back illumination provided with light emission means having external electrode |
| JP2008021546A (en) * | 2006-07-13 | 2008-01-31 | Harison Toshiba Lighting Corp | Dielectric barrier discharge lamp |
| DE102011055486A1 (en) * | 2011-11-18 | 2013-05-23 | Dritte Patentportfolio Beteiligungsgesellschaft Mbh & Co.Kg | High frequency lamp and method for operating a high frequency lamp |
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