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JPH05225960A - Electrodeless low pressure rare gas type fluorescent lamp - Google Patents

Electrodeless low pressure rare gas type fluorescent lamp

Info

Publication number
JPH05225960A
JPH05225960AJP3028792AJP3028792AJPH05225960AJP H05225960 AJPH05225960 AJP H05225960AJP 3028792 AJP3028792 AJP 3028792AJP 3028792 AJP3028792 AJP 3028792AJP H05225960 AJPH05225960 AJP H05225960A
Authority
JP
Japan
Prior art keywords
rare gas
xenon
fluorescent lamp
argon
electrodeless low
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
Application number
JP3028792A
Other languages
Japanese (ja)
Inventor
Shigeki Matsuo
茂樹 松尾
Masahiro Tokawa
雅弘 東川
Masaki Shinomiya
雅樹 四宮
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Panasonic Electric Works Co Ltd
Original Assignee
Matsushita Electric Works Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Matsushita Electric Works LtdfiledCriticalMatsushita Electric Works Ltd
Priority to JP3028792ApriorityCriticalpatent/JPH05225960A/en
Publication of JPH05225960ApublicationCriticalpatent/JPH05225960A/en
Pendinglegal-statusCriticalCurrent

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Abstract

PURPOSE:To provide an electrodeless low pressure rare gas type fluorescent lamp having good temperature characteristics, quick beam rise characteristics and high luminous efficiency. CONSTITUTION:A discharge vessel 1 is internally coated with a phosphor 2, and contains mixed rare gas 3 comprising 50% or less of xenon and the rest of argon by a volumetric ratio. Magnetic field is induced, upon power supply from a high-frequency power supply to an induction coil 4, and the gas 3 in the vessel 1 discharges and becomes luminous. The rare gas 3 is caused to be luminous by this constitution and, therefore, a constant beam can be obtained, regardless of temperature. Also, the rise of a beam becomes quick. In addition, luminous efficiency can be improved, compared with the case of the use of xenon or argon alone, as the mixed rare gas 3 of 50% or less of xenon and the rest of argon by a volumetric ratio is used as rare gas.

Description

Translated fromJapanese
【発明の詳細な説明】Detailed Description of the Invention

【0001】[0001]

【産業上の利用分野】本発明は、ランプ内部に電極を持
たず、外部からの高周波電磁界によってランプ内部の希
ガスを放電、発光させる無電極低圧希ガス蛍光ランプに
関する。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electrodeless low pressure rare gas fluorescent lamp which has no electrode inside the lamp and discharges and emits a rare gas inside the lamp by a high frequency electromagnetic field from the outside.

【0002】[0002]

【従来の技術】近年、長寿命、高効率の無電極放電ラン
プが実用化されている。
2. Description of the Related Art In recent years, an electrodeless discharge lamp having a long life and high efficiency has been put into practical use.

【0003】このランプは、放電気体を封入した放電容
器に近接して配置した誘導コイルに高周波電流を通電
し、発生する誘導電磁界で放電容器内の放電気体を放
電、発光させるものである。
In this lamp, a high-frequency current is passed through an induction coil arranged in the vicinity of a discharge vessel in which a discharge gas is sealed, and the generated induction electromagnetic field causes the discharge gas in the discharge vessel to discharge and emit light.

【0004】図3はその一例を示すもので、希ガスと水
銀を封入したバルブ1に近接して配置した誘導コイル4
に、高周波電源5から出力される高周波電流を通電し、
発生する誘導電磁界でバルブ1内の水銀原子を励起して
紫外線を放射し、この紫外線をバルブ1の内面に塗布し
た蛍光体(図示せず)に照射することにより可視光を得
るようにした無電極蛍光ランプである。
FIG. 3 shows an example of this, and an induction coil 4 arranged in the vicinity of a bulb 1 in which a rare gas and mercury are sealed.
The high-frequency current output from the high-frequency power source 5, and
The generated induction electromagnetic field excites the mercury atoms in the bulb 1 to emit ultraviolet rays, and the ultraviolet rays are applied to the phosphor (not shown) applied to the inner surface of the bulb 1 to obtain visible light. It is an electrodeless fluorescent lamp.

【0005】なお、図3において、6は導電体で構成さ
れた装置本体で、ランプや高周波発生回路から発生する
放射ノイズを除去する。7は導電性メッシュで構成され
た電磁シールド手段で、ランプからの照射光を透過する
と共に、照射面からのノイズ漏洩を防ぐ。
In FIG. 3, reference numeral 6 is a main body made of a conductor, which removes radiation noise generated from a lamp or a high frequency generating circuit. Reference numeral 7 is an electromagnetic shield means composed of a conductive mesh, which transmits the irradiation light from the lamp and prevents noise leakage from the irradiation surface.

【0006】この無電極蛍光ランプは、バルブ1内に電
極を持たないため、電極切れの心配がなく、長寿命であ
る。また、ランプの形状が自由に設計できるといった特
徴もある。
Since this electrodeless fluorescent lamp does not have an electrode inside the bulb 1, there is no fear of electrode breakage and it has a long life. Another feature is that the shape of the lamp can be freely designed.

【0007】[0007]

【発明が解決しようとする課題】しかしながら、かかる
無電極蛍光ランプは、水銀の発光を利用しているため、
低温時には水銀蒸気圧が下がり、光束が減少する。ま
た、光束立ち上がりが悪い等の問題がある。
However, since such an electrodeless fluorescent lamp utilizes the light emission of mercury,
At low temperatures, the mercury vapor pressure drops and the luminous flux decreases. Further, there is a problem that the luminous flux rises poorly.

【0008】本発明は、上記問題点に鑑みなされたもの
で、その目的とするところは、温度特性に優れ、光束立
ち上がりが早く、しかも発光効率の良い無電極低圧希ガ
ス蛍光ランプを提供することにある。
The present invention has been made in view of the above problems, and an object of the present invention is to provide an electrodeless low-pressure rare gas fluorescent lamp having excellent temperature characteristics, fast luminous flux rise, and good luminous efficiency. It is in.

【0009】[0009]

【課題を解決するための手段】上記課題を解決するため
本発明は、透光性の放電容器内に封入された希ガスを高
周波電磁界によって放電させるとともに、前記放電容器
内面に塗布した蛍光体によって可視光に変換してなる無
電極低圧希ガス蛍光ランプにおいて、前記希ガスを容積
比で50%以下のキセノンと残部アルゴンとの混合希ガ
スとしたことを特徴とする。
In order to solve the above-mentioned problems, the present invention is to discharge a rare gas enclosed in a translucent discharge vessel by a high frequency electromagnetic field, and at the same time, a phosphor coated on the inner surface of the discharge vessel. In the electrodeless low-pressure rare gas fluorescent lamp converted into visible light by the above, the rare gas is a mixed rare gas of 50% or less by volume of xenon and the balance argon.

【0010】[0010]

【作用】上記のように、放電容器内の希ガスを発光させ
るため、温度に関係なく一定の光束を得ることができ、
また、光束立ち上がりも早い。しかも、希ガスを容積比
で50%以下のキセノンと残部アルゴンとの混合希ガス
としたことにより、キセノン単一やアルゴン単一の場合
より発光効率が良くなる。
As described above, since the rare gas in the discharge vessel is caused to emit light, a constant luminous flux can be obtained regardless of temperature,
Also, the luminous flux rises quickly. Moreover, since the rare gas is a mixed rare gas containing 50% or less by volume of xenon and the balance argon, the luminous efficiency is improved as compared with the case of using only xenon or argon.

【0011】[0011]

【実施例】図1は本発明の一実施例を示すもので、図
中、1は放電容器としてのバルブであって、内面には蛍
光体2が塗布されている。また、バルブ1の内部には、
容積比で50%以下のキセノンと残部アルゴンとの混合
希ガス3が封入されている。4はバルブ1の外周に巻か
れた誘導コイル、5は誘導コイル4に高周波電流を通電
する高周波電源である。
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 shows an embodiment of the present invention. In the drawing, reference numeral 1 is a bulb as a discharge container, and a phosphor 2 is applied to the inner surface thereof. Also, inside the valve 1,
A mixed rare gas 3 of xenon and the balance argon of 50% or less in volume ratio is enclosed. Reference numeral 4 is an induction coil wound around the outer circumference of the valve 1, and 5 is a high-frequency power source for supplying a high-frequency current to the induction coil 4.

【0012】このように構成された無電極低圧希ガス蛍
光ランプの誘導コイル4に高周波電流を通電すると、電
磁界が誘導され、バルブ1内の混合希ガス3が放電、発
光する。そして、この混合希ガス3から発せられた紫外
線が蛍光体2により可視光に変換される。
When a high-frequency current is passed through the induction coil 4 of the electrodeless low-pressure rare gas fluorescent lamp constructed as described above, an electromagnetic field is induced, and the mixed rare gas 3 in the bulb 1 is discharged and emits light. Then, the ultraviolet rays emitted from the mixed rare gas 3 are converted into visible light by the phosphor 2.

【0013】図2はキセノンとアルゴンの混合比を変え
たときの相対輝度を示すグラフで、全圧が0.5 Torr、1.
0 Torr、2.0 Torrの場合を示す。ここで、相対輝度は、
0.5Torrの最大輝度を100%とした。
FIG. 2 is a graph showing the relative luminance when the mixing ratio of xenon and argon is changed, and the total pressure is 0.5 Torr, 1.
The case of 0 Torr and 2.0 Torr is shown. Where the relative brightness is
The maximum brightness of 0.5 Torr is 100%.

【0014】この図から明らかなように、全圧に関係な
く、キセノンの混合比が50%以下の場合は、キセノン
単一やアルゴン単一の場合よりも相対輝度が高くなって
いることが分かる。
As is clear from this figure, the relative luminance is higher when the mixing ratio of xenon is 50% or less, irrespective of the total pressure, as compared with the case where only xenon is used or only argon is used. ..

【0015】なお、本発明は上記実施例に限定されるも
のでないことは勿論であり、例えば放電容器1内の混合
希ガス3に高周波電磁界を印加する手段は、上記実施例
に限定されず、どのようなものでもよい。
It is needless to say that the present invention is not limited to the above embodiment, and means for applying a high frequency electromagnetic field to the mixed rare gas 3 in the discharge vessel 1 is not limited to the above embodiment. , It can be anything.

【0016】[0016]

【発明の効果】本発明は上記のように、放電容器内に封
入する希ガスを容積比で50%以下のキセノンと残部ア
ルゴンとの混合希ガスとしたことにより、温度に関係な
く一定の光束を得ることができるとともに、光束立ち上
がりも早く、しかも発光効率の良い無電極低圧希ガス蛍
光ランプを提供できる。
As described above, according to the present invention, the rare gas sealed in the discharge vessel is a mixed rare gas of xenon and the balance argon of 50% or less in volume ratio, so that the luminous flux is constant regardless of the temperature. In addition, it is possible to provide an electrodeless low-pressure rare gas fluorescent lamp which has a high luminous efficiency and a high luminous efficiency.

【図面の簡単な説明】[Brief description of drawings]

【図1】本発明の一実施例を示す一部断面の正面図であ
る。
FIG. 1 is a partial cross-sectional front view showing an embodiment of the present invention.

【図2】キセノンとアルゴンの混合比を変えたときの相
対輝度を示すグラフである。
FIG. 2 is a graph showing relative luminance when the mixing ratio of xenon and argon is changed.

【図3】従来例を示す正面図である。FIG. 3 is a front view showing a conventional example.

【符号の説明】 1 放電容器(バルブ) 2 螢光体 3 混合希ガス 4 誘導コイル 5 高周波電源[Explanation of symbols] 1 discharge vessel (bulb) 2 fluorescent material 3 mixed rare gas 4 induction coil 5 high frequency power supply

Claims (1)

Translated fromJapanese
【特許請求の範囲】[Claims]【請求項1】 透光性の放電容器内に封入された希ガス
を高周波電磁界によって放電させるとともに、前記放電
容器内面に塗布した蛍光体によって可視光に変換してな
る無電極低圧希ガス蛍光ランプにおいて、前記希ガスを
容積比で50%以下のキセノンと残部アルゴンとの混合
希ガスとしたことを特徴とする無電極低圧希ガス蛍光ラ
ンプ。
1. An electrodeless low-pressure rare gas fluorescence obtained by discharging a rare gas sealed in a translucent discharge vessel by a high frequency electromagnetic field and converting it into visible light by a phosphor coated on the inner surface of the discharge vessel. In the lamp, an electrodeless low-pressure rare gas fluorescent lamp, wherein the rare gas is a mixed rare gas containing 50% or less by volume of xenon and the balance argon.
JP3028792A1992-02-181992-02-18Electrodeless low pressure rare gas type fluorescent lampPendingJPH05225960A (en)

Priority Applications (1)

Application NumberPriority DateFiling DateTitle
JP3028792AJPH05225960A (en)1992-02-181992-02-18Electrodeless low pressure rare gas type fluorescent lamp

Applications Claiming Priority (1)

Application NumberPriority DateFiling DateTitle
JP3028792AJPH05225960A (en)1992-02-181992-02-18Electrodeless low pressure rare gas type fluorescent lamp

Publications (1)

Publication NumberPublication Date
JPH05225960Atrue JPH05225960A (en)1993-09-03

Family

ID=12299509

Family Applications (1)

Application NumberTitlePriority DateFiling Date
JP3028792APendingJPH05225960A (en)1992-02-181992-02-18Electrodeless low pressure rare gas type fluorescent lamp

Country Status (1)

CountryLink
JP (1)JPH05225960A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication numberPriority datePublication dateAssigneeTitle
US6522084B1 (en)1999-10-182003-02-18Matsushita Electric Industrial Co., Ltd.Electrodeless discharge lamp operating apparatus
WO2003103012A1 (en)*2002-06-032003-12-11Matsushita Electric Industrial Co., Ltd.Device for operating electrodeless low-voltage discharge lamp and bulb-shaped electrodeless fluorescent lamp
JP2007073479A (en)*2005-09-092007-03-22Phoenix Denki Kk Discharge lamp unit

Citations (2)

* Cited by examiner, † Cited by third party
Publication numberPriority datePublication dateAssigneeTitle
JPH01115047A (en)*1987-10-281989-05-08Mitsubishi Electric Corp Hot cathode low pressure rare gas discharge fluorescent lamp
JPH01243365A (en)*1988-03-251989-09-28Mitsubishi Electric CorpMicrowave discharge vacuum ultraviolet light source device

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication numberPriority datePublication dateAssigneeTitle
JPH01115047A (en)*1987-10-281989-05-08Mitsubishi Electric Corp Hot cathode low pressure rare gas discharge fluorescent lamp
JPH01243365A (en)*1988-03-251989-09-28Mitsubishi Electric CorpMicrowave discharge vacuum ultraviolet light source device

Cited By (4)

* Cited by examiner, † Cited by third party
Publication numberPriority datePublication dateAssigneeTitle
US6522084B1 (en)1999-10-182003-02-18Matsushita Electric Industrial Co., Ltd.Electrodeless discharge lamp operating apparatus
WO2003103012A1 (en)*2002-06-032003-12-11Matsushita Electric Industrial Co., Ltd.Device for operating electrodeless low-voltage discharge lamp and bulb-shaped electrodeless fluorescent lamp
US7049763B2 (en)2002-06-032006-05-23Matsushita Electric Industrial Co., Ltd.Electrodeless low-pressure discharge lamp operating device and self-ballasted electrodeless fluorescent lamp
JP2007073479A (en)*2005-09-092007-03-22Phoenix Denki Kk Discharge lamp unit

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