JPH11102608A - Electrodeless discharge lamp device - Google Patents
Electrodeless discharge lamp deviceInfo
- Publication number
- JPH11102608A JPH11102608A JP26328697A JP26328697A JPH11102608A JP H11102608 A JPH11102608 A JP H11102608A JP 26328697 A JP26328697 A JP 26328697A JP 26328697 A JP26328697 A JP 26328697A JP H11102608 A JPH11102608 A JP H11102608A
- Authority
- JP
- Japan
- Prior art keywords
- discharge lamp
- electrodeless discharge
- excitation coil
- reflector
- light
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Landscapes
- Circuit Arrangements For Discharge Lamps (AREA)
- Non-Portable Lighting Devices Or Systems Thereof (AREA)
- Discharge Lamps And Accessories Thereof (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、発光管を形成する
透光性気密容器内に封入した発光物質を高周波電磁界に
より励起、発光させる無電極放電ランプを反射鏡内に配
設した照明用の装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lighting device in which an electrodeless discharge lamp for exciting and emitting light from a light-emitting substance sealed in a light-transmitting airtight container forming an arc tube by a high-frequency electromagnetic field is provided in a reflector. Device.
【０００２】[0002]
【従来の技術】放電ランプ例えば汎用の蛍光ランプは、
蛍光体被膜が形成されたガラスバルブ（透光性気密容
器）の内部や外面にフィラメント、冷陰極、導電被膜や
導電体などからなる電極を対設するとともに、バルブ内
に放電用の水銀および希ガスを封入して構成されてい
る。そして、この蛍光ランプは、アーク放電により水銀
原子を励起して紫外線を発生させ、この紫外線を蛍光体
被膜に放射することによって可視光を得ている。2. Description of the Related Art Discharge lamps, for example, general-purpose fluorescent lamps,
An electrode made of a filament, a cold cathode, a conductive film or a conductor is provided inside or outside the glass bulb (translucent airtight container) on which the phosphor film is formed, and mercury and rare earth for discharge are placed inside the bulb. The gas is sealed. The fluorescent lamp excites mercury atoms by arc discharge to generate ultraviolet rays, and emits the ultraviolet rays to the phosphor coating to obtain visible light.
【０００３】しかし、上記フィラメントや冷陰極からな
る電極を有する放電ランプは、電極にランプの始動用や
放電維持用としてアルカリ土類金属の酸化物などからな
る電子放射性物質が設けられていて、この電子放射性物
質が電極から飛散消耗してしまうと点灯電圧が上昇して
不点となり寿命となったり、点灯時の高温で電極自体が
蒸発損耗して断線や破損を招き寿命に至ることが知られ
ている。However, a discharge lamp having an electrode composed of the above-mentioned filament or cold cathode is provided with an electron-emitting substance composed of an oxide of an alkaline earth metal or the like for starting or maintaining the discharge of the lamp. It is known that if the electron-emitting substance is scattered and consumed from the electrode, the lighting voltage rises and becomes inconsistency, resulting in a lifetime. ing.
【０００４】そこで、数年前から電極を備えず高周波点
灯される、通称無電極放電ランプと呼ばれる長寿命化し
た放電ランプが出現して（開発されて）きている。この
無電極放電ランプは、たとえば特開平５−２５１０５７
号公報に記載されているように、球形や回転楕円面形な
どをなすバルブ（透光性気密容器）内に発光物質および
放電ガスを封入した発光管の周囲に励起コイルを配置
し、この励起コイルに高周波電力を供給することによ
り、発光管内にプラズマ放電を生起させて点灯する構成
である。[0004] Therefore, a discharge lamp having a long life, which is generally called an electrodeless discharge lamp, which is provided with no electrodes and is operated at a high frequency without electrodes, has been developed (developed) for several years. This electrodeless discharge lamp is disclosed in, for example, Japanese Patent Application Laid-Open No. H5-251057.
As described in the publication, an excitation coil is arranged around a light-emitting tube in which a light-emitting substance and a discharge gas are sealed in a bulb (translucent airtight container) having a spherical shape or a spheroidal shape. By supplying high-frequency power to the coil, a plasma discharge is generated in the arc tube to turn on the coil.
【０００５】そして、この無電極放電ランプは、光放射
効率を高めるために、球面や回転楕円面などの反射面を
有する金属製の反射鏡と組合わせ、投光用などの照明装
置として用いられる。この照明装置は、発光管からの直
射光の遮蔽を低減するため反射鏡光軸に対して直交する
方向に励起コイルが配設されている。The electrodeless discharge lamp is used as a lighting device for projecting light, etc., in combination with a metal reflecting mirror having a reflecting surface such as a spherical surface or a spheroid in order to increase the light emission efficiency. . In this lighting device, an excitation coil is disposed in a direction orthogonal to the optical axis of the reflecting mirror in order to reduce shielding of direct light from the arc tube.
【０００６】この励起コイルは、一般にアルミニウムな
どの金属板を打ち抜き成形し、折り曲げることによって
発光管の周囲を２〜３巻きした構成で、両端の足部は反
射鏡の中央より下方側に形成した透孔内を非接触状態で
貫通して反射鏡外に導出され、点灯回路装置に接続して
いるとともにこの励起コイルの支持をなしている。This excitation coil generally has a configuration in which a metal plate made of aluminum or the like is stamped and formed and bent to form two or three turns around the arc tube. The legs at both ends are formed below the center of the reflector. It penetrates through the through hole in a non-contact state, is led out of the reflector, is connected to the lighting circuit device, and supports the excitation coil.
【０００７】[0007]
【発明が解決しようとする課題】そして、上記励起コイ
ルの足部相互が接触したりあるいは足部と金属製の反射
鏡とが接触すると反射鏡に電流が流れ電圧降下を起し
て、発光管が立ち消え、すなわち消灯してしまう。そこ
で、足部間および足部と透孔壁との間隔は、励起コイル
足部の取付け位置のばらつきや照明装置が振動や衝撃を
受けた際にも互いに接触しないような寸法で設計されて
いる。When the legs of the excitation coil come into contact with each other or when the legs contact a metal reflecting mirror, a current flows through the reflecting mirror, causing a voltage drop, and causing the arc tube to emit light. Disappears, that is, goes out. Therefore, the distance between the feet and the distance between the feet and the through-hole wall are designed to have dimensions such that the mounting positions of the excitation coil feet do not vary and the lighting device does not contact each other even when subjected to vibration or shock. .
【０００８】このように、装置構成部材の取付け誤差や
振動、衝撃を考慮し、互いの接触防止をはかると反射鏡
に形成する透孔は、結構大きなものが必要となる。しか
し、照明装置において、反射鏡に大きな孔があくこと
は、有効反射面積が減ることで発光効率が低下して好ま
しくない。また、励起コイルは足部の長さが長くなる
と、電力損失が多くなる問題がある。As described above, in order to prevent mutual contact in consideration of mounting errors, vibrations, and shocks of the components of the apparatus, the through-holes formed in the reflecting mirror need to be quite large. However, in the lighting device, it is not preferable that the reflection mirror has a large hole because the effective reflection area is reduced and the light emission efficiency is reduced. In addition, there is a problem that the power loss increases as the length of the foot of the excitation coil increases.
【０００９】また、上記発光管は球形や回転楕円面形な
どをなすバルブ（透光性気密容器）に始動用の細管が突
出して設けられていて、この細管は反射鏡の中央部に設
けた透孔を貫通して反射鏡の外へ導出され、その先端は
反射鏡の裏側に配置した始動回路部に接続している。そ
して、この細管は発光管から反射鏡に向かう放射光を遮
り、また、反射鏡に設けた透孔は上述した励起コイルの
足部導出用の透孔と同様に有効反射面積を減らし発光効
率が低下するという問題がある。In addition, the luminous tube has a bulb (light-transmitting airtight container) having a spherical shape or a spheroidal shape, and a starting thin tube is provided so as to protrude, and the thin tube is provided at a central portion of the reflecting mirror. It is led out of the reflector through the through-hole, and its tip is connected to a starting circuit section arranged behind the reflector. The thin tube blocks the radiated light from the arc tube toward the reflecting mirror, and the through-hole provided in the reflecting mirror reduces the effective reflection area and reduces the luminous efficiency similarly to the above-described through-hole for leading the foot of the excitation coil. There is a problem of lowering.
【００１０】本発明は、上記事情に鑑みてなされたもの
で、無電極放電ランプと反射鏡とを一体化したものにお
いて、反射鏡の有効反射面積を大きくして発光効率を向
上させるとともに電気的な短絡を防止できる照明装置を
提供することを目的とする。SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and in an integrated electrodeless discharge lamp and a reflecting mirror, the effective reflecting area of the reflecting mirror is increased to improve luminous efficiency and to improve electrical efficiency. It is an object of the present invention to provide a lighting device capable of preventing a short circuit.
【００１１】[0011]
【課題を解決するための手段】本発明の請求項１に記載
の無電極放電ランプ装置は、透光性気密容器内に発光物
質を封入した発光管およびこの発光管の外周に配設した
励起コイルを有する無電極放電ランプと、無電極放電ラ
ンプが配設されるとともに励起コイルの一対の足部が所
定の間隔を隔て光放射方向に重合した状態で延在され、
一方の足部が電気的に接続され、他方の足部が電気的に
離隔して貫通される透孔を形成した金属製の反射鏡と、
励起コイルの一方の足部および反射鏡と電気的に接続し
た点灯回路装置と、無電極放電ランプ、反射鏡および点
灯回路装置を一体的に配設してなる本体とを具備してい
ることを特徴とする。According to a first aspect of the present invention, there is provided an electrodeless discharge lamp device comprising: a light-emitting tube in which a light-emitting substance is sealed in a light-transmitting airtight container; and an excitation lamp disposed on the outer periphery of the light-emitting tube. An electrodeless discharge lamp having a coil, the electrodeless discharge lamp is provided, and a pair of feet of the excitation coil are extended in a state of being superposed in a light emitting direction at a predetermined interval,
A metal reflector in which one foot is electrically connected and the other foot is formed with a through hole that is electrically separated and penetrated,
A lighting circuit device electrically connected to one foot of the excitation coil and the reflecting mirror, and a main body integrally provided with the electrodeless discharge lamp, the reflecting mirror and the lighting circuit device. Features.
【００１２】この無電極放電ランプ装置は、無電極放電
ランプの発光によって直射光、放電ランプから反射鏡の
反射面に入射し反射した反射光がレンズなどの制光体を
透過して放射される。In this electrodeless discharge lamp device, direct light is emitted by the emission of the electrodeless discharge lamp, and reflected light that is incident on the reflecting surface of the reflecting mirror from the discharge lamp and is reflected and transmitted through a light control body such as a lens. .
【００１３】また、励起コイルの一対の足部の一方を反
射鏡に接続することによって、反射鏡に形成した透孔を
貫通するのは他方の足部の１片だけであり、その透孔の
形成面積を小さくできた。すなわち、透孔内を透孔壁を
含み互いに接触しないよう電気的に離隔して貫通する足
部を２片から１片としたことにより透孔を形成する面積
を小さくし、反射鏡の有効反射面積を大きくできる。By connecting one of the pair of feet of the excitation coil to the reflector, only one piece of the other foot passes through the through hole formed in the reflector. The formation area could be reduced. In other words, the area in which the through hole is formed is reduced by changing the foot portion that includes the through hole wall and penetrates electrically apart from each other so as not to contact each other so as not to contact each other. Area can be enlarged.
【００１４】また、上記励起コイルの一方の足部を反射
鏡に固定したのでその長さを短くでき、機械的な強度が
向上できるとともに製造が容易となる。Further, since one foot of the excitation coil is fixed to the reflecting mirror, the length can be shortened, the mechanical strength can be improved, and the manufacturing becomes easy.
【００１５】また、本発明が適用される無電極放電ラン
プ装置は、投光用などの照明灯や交通信号・標識用など
の表示灯など、特に、ランプ交換が困難や手間を要する
箇所の長寿命が要求される照明装置などに好適する。In addition, the electrodeless discharge lamp device to which the present invention is applied is particularly suitable for a lighting device such as a floodlight or a display lamp for a traffic signal or a sign. It is suitable for lighting devices that require a long life.
【００１６】また、この無電極放電ランプ装置は、制光
や安全性の向上のために反射鏡の前方開口部を覆うよう
に透光性のカバー部材を設けることは構わない。In this electrodeless discharge lamp device, a light-transmitting cover member may be provided so as to cover the front opening of the reflecting mirror for controlling light and improving safety.
【００１７】なお、本発明に適用できる無電極放電ラン
プは実施の形態に記載したものに限らない。たとえば透
光性気密容器を形成するバルブは、石英ガラスや酸化ア
ルミニウムに限らず、硬質ガラスや他のセラミックスで
あってもよい。また、バルブ内に封入する発光物質は、
ハロゲン化金属などであってもよい。また、励起コイル
を形成する材料は、アルミニウム、銅、銀などであって
も差支えない。The electrodeless discharge lamp applicable to the present invention is not limited to the one described in the embodiment. For example, the bulb forming the light-transmitting airtight container is not limited to quartz glass or aluminum oxide, but may be hard glass or other ceramics. Also, the luminescent substance sealed in the bulb is
It may be a metal halide or the like. The material for forming the excitation coil may be aluminum, copper, silver, or the like.
【００１８】本発明の請求項２に記載の無電極放電ラン
プ装置は、始動用細管を接続してなる透光性気密容器内
に発光物質を封入した発光管およびこの発光管の外周に
配設した励起コイルを有する無電極放電ランプと、無電
極放電ランプが配設されるとともに励起コイルの一対の
足部および始動用細管が所定の間隔を隔て光放射方向に
重合した状態で貫通される透孔を形成した金属製の反射
鏡と、励起コイルの足部と電気的に接続した点灯回路装
置と、無電極放電ランプ、反射鏡および点灯回路装置を
一体的に配設してなる本体とを具備していることを特徴
とする。According to a second aspect of the present invention, there is provided an electrodeless discharge lamp device in which a light-emitting substance is sealed in a light-transmitting airtight container to which a starting thin tube is connected, and which is disposed on the outer periphery of the light-emitting tube. An electrodeless discharge lamp having an excited coil and an electrodeless discharge lamp are provided, and a pair of feet of the excitation coil and a starting capillary are penetrated in a state of being overlapped in a light emitting direction at a predetermined interval. A metal reflector having a hole formed therein, a lighting circuit device electrically connected to the foot of the excitation coil, and a main body integrally provided with the electrodeless discharge lamp, the reflector and the lighting circuit device. It is characterized by having.
【００１９】この無電極放電ランプ装置は、反射鏡の無
効反射部分は足部の幅分と透孔分で、従来と足部の幅分
は変わらないが、従来の透孔よりは始動用細管分、少々
形成面積は増える。しかし、従来の中央部と下方部の２
つの透孔が存在するよりも大きく形成面積を減らすこと
ができるので、この場合も有効反射面積が大きくなり発
光効率を高めることができる。In this electrodeless discharge lamp device, the ineffective reflection portion of the reflector is the width of the foot and the through hole, and the width of the foot is not different from the conventional one. The formation area slightly increases. However, the conventional central part and lower part
Since the formation area can be reduced more than the presence of the two through holes, the effective reflection area can be increased in this case as well, and the luminous efficiency can be increased.
【００２０】また、従来は反射鏡の中央部に向かって在
って、反射鏡中央部に向かう放射光を遮蔽していた始動
用細管は、下向きで励起コイルの足部よりも細く足部に
重なって隠れた状態となるので、反射光を遮蔽すること
がない。In addition, the starting tubule which is conventionally located toward the center of the reflector and shields the radiated light toward the center of the reflector is directed downward and thinner than the foot of the excitation coil. Since they overlap and are hidden, there is no need to block the reflected light.
【００２１】また、始動用細管は、石英ガラスやセラミ
ックスなどの電気絶縁性物質からなるため足部や透孔壁
と当接してしていても問題はない。Further, since the starting thin tube is made of an electrically insulating substance such as quartz glass or ceramics, there is no problem even if it is in contact with the foot portion or the wall of the through hole.
【００２２】本発明の請求項３に記載の無電極放電ラン
プ装置は、励起コイルの一方の足部が反射鏡と電気的に
接続され、他方の足部が反射鏡と電気的に離隔して透孔
を貫通し、両足部が点灯回路装置に接続していることを
特徴とする。According to a third aspect of the present invention, there is provided an electrodeless discharge lamp device, wherein one leg of the excitation coil is electrically connected to the reflector, and the other leg is electrically separated from the reflector. It is characterized in that it penetrates the through hole and both feet are connected to the lighting circuit device.
【００２３】上記請求項１および２に記載したと同様な
作用を奏する。The same operation as described in the first and second aspects is achieved.
【００２４】本発明の請求項４に記載の無電極放電ラン
プ装置は、反射鏡と遠い側に位置する一方の励起コイル
の足部側が、反射鏡と電気的に接続していることを特徴
とする。The electrodeless discharge lamp device according to a fourth aspect of the present invention is characterized in that one of the excitation coils located on the side remote from the reflector is electrically connected to the reflector. I do.
【００２５】励起コイルの足部は、反射鏡に近い足部側
を高電位側に、また、反射鏡に遠い反射鏡と接続した足
部側をグランド側とすることによって、高周波発生回路
部のノイズの遮蔽効果があり発光特性の安定化がはかれ
るとともに放電に寄与しない余分な配線長を短くでき、
始動特性の向上および励起コイルと放電の結合係数が向
上できる。The foot of the excitation coil has a high-potential side on the side close to the reflecting mirror and a ground side on the side connected to the reflecting mirror far from the reflecting mirror. It has a noise shielding effect, stabilizes the light emission characteristics, and can reduce the extra wiring length that does not contribute to discharge.
The starting characteristics can be improved and the coupling coefficient between the excitation coil and the discharge can be improved.
【００２６】本発明の請求項５に記載の無電極放電ラン
プ装置は、反射鏡の反射面形状が、連設した複数段の異
なる曲面からなることを特徴とする。According to a fifth aspect of the present invention, there is provided the electrodeless discharge lamp device, wherein the reflecting surface of the reflecting mirror comprises a plurality of successively different curved surfaces.
【００２７】反射鏡の反射面形状が、単一ものから構成
されるものではなく、中央部は球面で、外周側は回転放
物面、回転楕円面または中央側とは異なる径の球面のう
ちから選ばれて形成されていて、反射面の焦点を通るか
または焦点近傍に放電ランプの発光中心を配設すれば、
発光効率を向上できる。The shape of the reflecting surface of the reflecting mirror is not a single one. The central portion is a spherical surface, and the outer peripheral side is a paraboloid of revolution, a spheroidal surface or a spherical surface having a diameter different from that of the central side. If the light emission center of the discharge lamp is disposed at or near the focal point of the reflecting surface,
Luminous efficiency can be improved.
【００２８】また、二種以上の異なる反射面を連接させ
て同一焦点の反射鏡としたり、その焦点が発光中心を通
る異なる複数の反射面の集合体であってもよい。Further, two or more kinds of different reflecting surfaces may be connected to each other to form a reflecting mirror having the same focal point, or an aggregate of a plurality of different reflecting surfaces whose focal points pass through the emission center.
【００２９】[0029]
【発明の実施の形態】以下、本発明に係わる無電極放電
ランプ装置の第１の実施の形態を図面を参照して説明す
る。図１は無電極放電ランプ装置Ｌ１の概略を示す縦断
面図、図２は図１において前面の制光体を外した状態の
正面図である。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a first embodiment of the electrodeless discharge lamp device according to the present invention will be described with reference to the drawings. FIG. 1 is a vertical cross-sectional view schematically showing an electrodeless discharge lamp device L1, and FIG. 2 is a front view of FIG. 1 with a front light control body removed.
【００３０】図中、１は無電極放電ランプで、このラン
プ１は発光管２とこの発光管２の外周に配置された励起
コイル５とからなる。上記発光管２は合成石英ガラスや
Ａｌ2 Ｏ3 （酸化アルミニウム）などの高融点材料製の
透光性気密容器からなる球形状や回転楕円形状をなすこ
こでは回転楕円形状のバルブ３を備え、このバルブ３の
内部には、発光物質としてＮａＩ−ＣｅＩ3 （ヨウ化ナ
トリウム−ヨウ化セリウム）などのハロゲン化物とＡｒ
（アルゴン）、Ｘｅ（キセノン）、Ｋｒ（クリプトン）
やＮｅ（ネオン）などから選ばれた少なくとも一種の希
ガスが封入されている。また、４はバルブ３に接続され
たバルブ３と同質の材料からなる始動用細管である。In the figure, reference numeral 1 denotes an electrodeless discharge lamp, which comprises an arc tube 2 and an excitation coil 5 arranged on the outer periphery of the arc tube 2. The arc tube 2 has a spherical or spheroidal bulb 3 made of a translucent airtight container made of a high melting point material such as synthetic quartz glass or Al 2 O 3 (aluminum oxide). Inside the bulb 3, a halide such as NaI-CeI3 (sodium iodide-cerium iodide) and Ar
(Argon), Xe (Xenon), Kr (Krypton)
At least one kind of rare gas selected from the group consisting of Ne, Ne, and the like is sealed. Reference numeral 4 denotes a starting thin tube connected to the valve 3 and made of the same material as the valve 3.
【００３１】また、励起コイル５は板厚約２ｍｍのアル
ミニウムＡｌなどの導電性の金属板を打ち抜き成形し、
折り曲げることによって発光管の周囲を２〜３巻きして
導電経路を形成した構成で、両端の帯板状の足部５１，
５２（幅約１８ｍｍ）はほぼ平行し、図２の正面方向か
らみて両者は左右にはみでることなく重合した状態で延
在されているのが好ましく、また、側面からみると３〜
６ｍｍの間隔を隔て電気的に離隔している。The excitation coil 5 is formed by punching a conductive metal plate such as aluminum Al having a thickness of about 2 mm.
The conductive path is formed by bending the circumference of the arc tube by two or three turns by bending it.
52 (approximately 18 mm in width) are substantially parallel to each other, and preferably extend in a superimposed state without protruding from the left and right as viewed from the front in FIG.
It is electrically separated by an interval of 6 mm.
【００３２】また、６はたとえば回転放物面からなる反
射面形状を有するアルミニウムＡｌなどの金属製の椀形
の反射鏡で、内表面にはアルミニウムＡｌなどからなる
反射膜（図示しない。）が形成してある。また、この反
射鏡６の中央部および中央より下方側には透孔６１，６
２が形成してある。Reference numeral 6 denotes a bowl-shaped reflecting mirror made of a metal such as aluminum Al having a reflecting surface shape of a paraboloid of revolution. A reflecting film (not shown) made of aluminum Al or the like is formed on the inner surface. It is formed. Further, through holes 61 and 6 are formed in the central portion of the reflecting mirror 6 and below the central portion.
2 are formed.
【００３３】そして、上記無電極放電ランプ１を構成す
る発光管２と励起コイル５は、次に述べるようにして反
射鏡６内に取付けられている。The arc tube 2 and the excitation coil 5 constituting the electrodeless discharge lamp 1 are mounted in the reflecting mirror 6 as described below.
【００３４】発光管２は、その光中心が反射鏡６の焦点
位置で、始動用細管４が反射鏡光軸とほぼ平行でその先
端部が反射鏡６中央部の透孔６１より突出した状態で、
後述する始動回路部７Ｓに固定されることによって支持
されている。The light emitting tube 2 has a light center at the focal position of the reflecting mirror 6, the starting thin tube 4 substantially parallel to the optical axis of the reflecting mirror, and a tip end protruding from a through hole 61 at the center of the reflecting mirror 6. so,
It is supported by being fixed to a starting circuit section 7S described later.
【００３５】また、励起コイル５は、一対の足部５１，
５２のうち反射鏡６に近い側に位置する他方の足部５２
側が、反射鏡６の透孔６２壁と電気的に離隔貫通して反
射鏡６の外へと導出されている。また、一方の足部５１
側は、透孔６２と隣接する位置６８で反射鏡６と溶接な
どの手段で固定されている。The excitation coil 5 includes a pair of feet 51,
52, the other foot 52 located on the side closer to the reflecting mirror 6
The side is electrically separated from the wall of the through hole 62 of the reflecting mirror 6, and is led out of the reflecting mirror 6. Also, one foot 51
The side is fixed to the reflecting mirror 6 at a position 68 adjacent to the through hole 62 by means such as welding.
【００３６】また、図中７Ｈは反射鏡６に取付金具６
９，６９を介し固定された高周波電源となる高周波発生
回路部、７Ｓは高圧パルス発生器などの始動回路部で、
この高周波発生回路部７Ｈおよび始動回路部７Ｓで点灯
回路装置７を構成している。そして、上記反射鏡６中央
部の透孔６１より突出した始動用細管４は始動回路部７
Ｓと電気的に接続されている。また、励起コイル５の一
方の足部５１は取付金具６９，６９を介し、他方の足部
５２は直接に点灯回路部７Ｈに電気的に接続されてい
る。また、励起コイル５はこの一対の足部５１，５２に
より機械的な支持もなされている。In the drawing, reference numeral 7H denotes a mounting bracket 6 on the reflecting mirror 6.
A high-frequency generation circuit section serving as a high-frequency power supply fixed via 9, 69; 7S is a starting circuit section such as a high-voltage pulse generator;
The lighting circuit device 7 is constituted by the high-frequency generation circuit 7H and the starting circuit 7S. The starting tube 4 protruding from the through hole 61 at the center of the reflecting mirror 6 is connected to the starting circuit unit 7.
It is electrically connected to S. One leg 51 of the excitation coil 5 is electrically connected to the lighting circuit unit 7H directly via the mounting brackets 69, 69, and the other leg 52 is directly connected to the lighting circuit unit 7H. The excitation coil 5 is also mechanically supported by the pair of feet 51 and 52.
【００３７】また、図中８は反射鏡６の前面開口部に設
けられたレンズなどからなる制光体、９は上記無電極放
電ランプ１を内包した反射鏡６、高周波点灯回路部７
Ｈ、始動回路部７Ｓや制光体８などを一体的に収容した
筐状体の本体で、これら部材で無電極放電ランプ装置Ｌ
１を構成している。In the figure, reference numeral 8 denotes a light control body composed of a lens or the like provided at the front opening of the reflecting mirror 6, 9 denotes a reflecting mirror 6 including the electrodeless discharge lamp 1, and a high-frequency lighting circuit section 7.
H, a main body of a housing in which the starting circuit portion 7S, the light control member 8, and the like are integrally housed, and the electrodeless discharge lamp device L
1.
【００３８】この無電極放電ランプ装置Ｌ１の点灯は、
点灯回路装置７への通電によって、すなわち、始動回路
部７Ｓから始動用細管４に高圧パルス電圧が印加される
と、始動用細管４内において電離が起こり、この電離で
発生したイオンや電子が細管４内を拡散しバルブ３に拡
がっていく。そして、このとき高周波発生回路部７Ｈか
ら励起コイル５を介してバルブ３にも電界が付与されて
いるので、バルブ３内のイオンや電子が容易にプラズマ
放電に移行し、無電極放電ランプ１が発光する。The lighting of the electrodeless discharge lamp device L1 is as follows.
When the lighting circuit device 7 is energized, that is, when a high-voltage pulse voltage is applied to the starting thin tube 4 from the starting circuit unit 7S, ionization occurs in the starting thin tube 4, and ions and electrons generated by the ionization are generated in the thin tube. 4 diffuses into the valve 3. At this time, since an electric field is also applied to the bulb 3 from the high-frequency generation circuit section 7H via the excitation coil 5, ions and electrons in the bulb 3 easily transition to plasma discharge, and the electrodeless discharge lamp 1 Emits light.
【００３９】そして、この放電ランプ装置Ｌ１は、無電
極放電ランプ１の発光によって直射光Ａ、放電ランプ１
から反射鏡６の反射面に入射し反射した反射光Ｂがレン
ズなどの制光体８を透過して放射される。また、このと
きの反射鏡６の無効反射部分は図２の反射鏡６の前面側
からみて下方に延在する励起コイル５の一対の足部５
１，か５２の幅分と透孔６２分で、従来と足部５１か５
２の幅分は変わらないが、従来の透孔６２よりは形成面
積が減少する。The discharge lamp device L1 is configured to emit the direct light A and the discharge lamp 1 by the emission of the electrodeless discharge lamp 1.
The reflected light B incident on the reflecting surface of the reflecting mirror 6 and reflected is transmitted through the light control body 8 such as a lens and emitted. At this time, the ineffective reflection portion of the reflector 6 is a pair of feet 5 of the excitation coil 5 extending downward as viewed from the front side of the reflector 6 in FIG.
With the width of 1 or 52 and the length of the through hole 62, the conventional and foot 51 or 5
Although the width of 2 does not change, the formation area is smaller than that of the conventional through hole 62.
【００４０】このような無電極放電ランプ装置Ｌ１によ
れば、励起コイル５の一対の足部５１，５２の一方を反
射鏡６に接続することによって、反射鏡６に形成した透
孔６２を貫通するのは他方の足部５２の１片だけであ
り、その透孔６２の形成面積を小さくできた。すなわ
ち、透孔６２内を透孔壁を含み互いに接触しないよう電
気的に離隔して貫通する足部を２片から１片としたこと
により透孔６２を形成する面積を小さくし、反射鏡６の
有効反射面積を大きくできたことによって、透孔６２内
に向かい無効となってしまう放射光を減らし発光効率を
高めることができる。According to such an electrodeless discharge lamp device L 1, one of the pair of feet 51, 52 of the excitation coil 5 is connected to the reflecting mirror 6, so that it passes through the through-hole 62 formed in the reflecting mirror 6. Only one piece of the other foot 52 was formed, and the formation area of the through hole 62 could be reduced. In other words, the area in which the through-hole 62 is formed is reduced by reducing the area of the through-hole 62 from two pieces to one piece that includes the through-hole wall and penetrates electrically apart so as not to contact each other. The effective reflection area can be increased, so that the radiation light that becomes ineffective toward the inside of the through hole 62 can be reduced and the luminous efficiency can be increased.
【００４１】また、上記励起コイル５の一方の足部５１
を反射鏡６に固定したのでその長さを短くでき、機械的
な強度が向上できるとともに製造が容易となる。One foot 51 of the excitation coil 5
Is fixed to the reflecting mirror 6, the length thereof can be shortened, the mechanical strength can be improved, and the manufacturing becomes easy.
【００４２】また、励起コイル５の足部５１，５２は、
反射鏡６に近い足部５２側を高電位側に、また、反射鏡
６に遠い反射鏡６と接続した足部５１側をグランド側と
することによって、高周波発生回路部７Ｈのノイズの遮
蔽効果があり発光特性の安定化がはかれるとともに放電
に寄与しない余分な配線長を短くでき、始動特性の向上
および励起コイル５と放電の結合係数が向上できること
も分かった。The feet 51, 52 of the excitation coil 5 are
By setting the side of the foot 52 closer to the reflecting mirror 6 to the high potential side and the side of the foot 51 connected to the reflecting mirror 6 far from the reflecting mirror 6 to the ground side, a noise shielding effect of the high-frequency generation circuit 7H is provided. It was also found that the stabilization of the light emission characteristics was achieved, the extra wiring length not contributing to the discharge was shortened, the starting characteristics were improved, and the coupling coefficient between the excitation coil 5 and the discharge was improved.
【００４３】また、図３および図４は本発明に係わる無
電極放電ランプ装置の第２の実施の形態の概略を示し、
図３は無電極放電ランプ装置Ｌ２の縦断面図、図４は図
３において前面の制光体を外した状態の正面図である。
なお、図中、図１および図２と同一部分には同一の符号
を付してその説明は省略する。FIGS. 3 and 4 show the outline of a second embodiment of the electrodeless discharge lamp device according to the present invention.
FIG. 3 is a longitudinal sectional view of the electrodeless discharge lamp device L2, and FIG. 4 is a front view of FIG. 3 with a front light control body removed.
In the drawings, the same portions as those in FIGS. 1 and 2 are denoted by the same reference numerals, and description thereof will be omitted.
【００４４】図３および図４に示す無電極放電ランプ装
置Ｌ２は、反射鏡６に対する無電極放電ランプ１の配設
方向を変えたもので、すなわち、反射鏡６軸に対し発光
管２が直交した方向にあり、図４の反射鏡６の前面側か
らみて下方に延在する始動用細管４および励起コイル５
の一対の足部５１，５２が重なって共通する透孔６２を
貫通している。また、この透孔６２を貫通して反射鏡６
外に導出した始動用細管４および励起コイル５の一対の
足部５１，５２は、高周波点灯回路部７Ｈと始動回路部
７Ｓとを合体化した点灯回路装置７に電気的な接続と機
械的な支持がなされている。In the electrodeless discharge lamp device L2 shown in FIGS. 3 and 4, the direction in which the electrodeless discharge lamp 1 is disposed with respect to the reflecting mirror 6 is changed, that is, the arc tube 2 is orthogonal to the axis of the reflecting mirror 6. The starting capillary 4 and the excitation coil 5 extend downward as viewed from the front side of the reflecting mirror 6 in FIG.
Are overlapped and pass through a common through hole 62. The reflecting mirror 6 penetrates through the through hole 62.
A pair of legs 51 and 52 of the starting capillary 4 and the excitation coil 5 led out are electrically connected and mechanically connected to the lighting circuit device 7 in which the high-frequency lighting circuit unit 7H and the starting circuit unit 7S are combined. There is support.
【００４５】このような構成であると、反射鏡６の無効
反射部分は足部５１か５２の幅分と透孔６２分で、従来
と足部５１か５２の幅分は変わらないが、従来の透孔６
２よりは始動用細管４分、少々形成面積は増える。しか
し、従来の中央部と下方部の２つの透孔６１，６２が存
在するよりも大きく形成面積を減らすことができるの
で、この場合も有効反射面積が大きくなり発光効率を高
めることができる。With such a configuration, the ineffective reflection portion of the reflecting mirror 6 is the width of the foot 51 or 52 and the width of the through hole 62, and the width of the foot 51 or 52 is not different from that of the conventional mirror. Through hole 6
The starting tube is 4 minutes longer than 2, and the formation area is slightly increased. However, since the formation area can be reduced larger than the conventional two through holes 61 and 62 in the central part and the lower part, the effective reflection area can be increased and the luminous efficiency can be increased in this case as well.
【００４６】また、従来は反射鏡６の中央部に向かって
在って、反射鏡６中央部に向かう放射光を遮蔽していた
始動用細管４は、下向きで励起コイル５の足部５１，５
２よりも細く足部５１，５２に重なって隠れた状態とな
るので、反射光を遮蔽することがなく、発光効率を高め
ることができる。In addition, the starting thin tube 4, which was conventionally located toward the central portion of the reflecting mirror 6 and shields the radiated light toward the central portion of the reflecting mirror 6, faces downward, and the legs 51, 5
Since it is thinner than 2 and overlaps the feet 51 and 52 and is hidden, it is possible to increase the luminous efficiency without blocking the reflected light.
【００４７】また、始動用細管４は、石英ガラスやセラ
ミックスなどの電気絶縁性物質からなるため足部５１，
５２や透孔６２壁と当接してしていても問題はない。ま
た、この場合は足部５１，５２間に始動用細管４が配置
されていても差支えなく、確実な電気絶縁が確保でき
る。Further, since the starting thin tube 4 is made of an electrically insulating material such as quartz glass or ceramics, the foot portion 51,
There is no problem even if it is in contact with the wall 52 or the wall of the through hole 62. In this case, even if the starting tubule 4 is arranged between the foot portions 51 and 52, there is no problem, and reliable electric insulation can be secured.
【００４８】また、図５は本発明に係わる無電極放電ラ
ンプ装置Ｌ３の第３の実施の形態の概略を示す縦断面図
で、図中、図１ないし図４と同一部分には同一の符号を
付してその説明は省略する。FIG. 5 is a longitudinal sectional view schematically showing a third embodiment of the electrodeless discharge lamp device L3 according to the present invention. In FIG. 5, the same parts as those in FIGS. And the description is omitted.
【００４９】この無電極放電ランプ装置Ｌ３は、無電極
放電ランプ１を配設する反射鏡６の反射面形状を変えた
ものである。上記第１，２の実施の形態で示した反射鏡
６は回転放物面からなる単一の反射面であるのに対し
て、この第３の実施の形態で示す反射鏡６は同心円状に
複数段の反射面、ここでは２段の反射面を連設したもの
である。この反射鏡６が単一反射面であると、反射光が
発光管２のバルブ３周囲にある励起コイル５に遮蔽され
ることがある。The electrodeless discharge lamp device L3 is obtained by changing the shape of the reflecting surface of the reflecting mirror 6 on which the electrodeless discharge lamp 1 is disposed. While the reflecting mirror 6 shown in the first and second embodiments is a single reflecting surface composed of a paraboloid of revolution, the reflecting mirror 6 shown in the third embodiment is concentric. A plurality of reflecting surfaces, here, two reflecting surfaces are provided in series. If the reflecting mirror 6 has a single reflecting surface, the reflected light may be shielded by the excitation coil 5 around the bulb 3 of the arc tube 2.
【００５０】すなわち、この反射鏡６は主体をなす外周
側部分はたとえば回転放物面６Ａからなり、中央部は球
面６Ｂからなる２段の反射面を連設している。このよう
な構成であると、中央部の球面６Ｂに入射した光線は、
そのまま反射して発光管２に戻りバルブ３を透過して制
光体８に向かい、制光体８を透過して放射（矢印Ｃ）さ
れる。That is, the reflecting mirror 6 has, for example, a paraboloid of revolution 6A at its outer peripheral side and a two-stage reflecting surface of a spherical surface 6B at its center. With such a configuration, the light rays incident on the central spherical surface 6B are:
The light is reflected as it is, returns to the arc tube 2, passes through the bulb 3, goes to the light control body 8, passes through the light control body 8, and is emitted (arrow C).
【００５１】この複合反射鏡６は、発光管２のバルブ３
外径、励起コイル５径や焦点距離などの条件により変わ
るので、状況に応じて適宜選ぶことを要する。The composite reflecting mirror 6 is connected to the bulb 3 of the arc tube 2.
Since it varies depending on conditions such as the outer diameter, the diameter of the excitation coil 5 and the focal length, it is necessary to select an appropriate value according to the situation.
【００５２】また、図３の第２の実施の形態の無電極放
電ランプ装置Ｌ２の反射鏡６において、点線で示すよう
に２段の反射面（回転放物面６Ａと球面６Ｂ）を連設し
ても同様な作用効果を奏する。Further, in the reflecting mirror 6 of the electrodeless discharge lamp device L2 of the second embodiment shown in FIG. 3, two reflecting surfaces (a paraboloid of revolution 6A and a spherical surface 6B) are continuously provided as shown by a dotted line. The same operation and effect can be obtained.
【００５３】[0053]
【発明の効果】請求項１の発明によれば、反射鏡の有効
反射面積が大きくなったことにより、透孔内に向かい無
効となってしまう放射光を減らし、発光効率の向上した
無電極放電ランプ装置を提供できる。また、励起コイル
の一方の足部を反射鏡に固定したのでその長さを短くで
き、機械的な強度が向上できるとともに製造が容易とな
る。According to the first aspect of the present invention, since the effective reflection area of the reflector is increased, the radiation light that becomes ineffective toward the through hole is reduced, and the electrodeless discharge with improved luminous efficiency is achieved. A lamp device can be provided. Further, since one foot of the excitation coil is fixed to the reflecting mirror, the length can be shortened, the mechanical strength can be improved, and the manufacturing becomes easy.
【００５４】また、請求項２の発明によれば、反射鏡の
有効反射面積が大きくなったことおよび始動用細管によ
る遮蔽がないので、発光効率の向上した無電極放電ラン
プ装置を提供できる。According to the second aspect of the present invention, since the effective reflecting area of the reflector is increased and there is no shielding by the starting capillary, an electrodeless discharge lamp device with improved luminous efficiency can be provided.
【００５５】また、請求項３の発明によれば、上記請求
項１および２に記載したと同様な効果を奏する。According to the third aspect of the invention, the same effects as those of the first and second aspects can be obtained.
【００５６】また、請求項４の発明によれば、高周波発
生回路部のノイズの遮蔽効果があり発光特性の安定化が
はかれるとともに放電に寄与しない余分な配線長を短く
でき、始動特性の向上および励起コイルと放電の結合係
数が向上できる。According to the fourth aspect of the present invention, there is an effect of shielding noise in the high-frequency generation circuit portion, stabilization of light emission characteristics can be achieved, and an extra wiring length that does not contribute to discharge can be shortened. The coupling coefficient between the excitation coil and the discharge can be improved.
【００５７】さらに、請求項５の発明によれば、反射鏡
の反射面形状は単一ものから構成されるものではなく、
回転球面、回転放物面あるいは回転楕円面などを二種以
上連接させて同一焦点の反射面形成としたり、その焦点
が線状であれば焦点に沿い異なる複数の反射面の集合体
とすれば、それぞれの反射面の光学特性が高まり、ラン
プ装置の発光特性を向上できる。Further, according to the fifth aspect of the present invention, the shape of the reflecting surface of the reflecting mirror is not constituted by a single shape.
If a sphere of revolution, a paraboloid of revolution or a spheroid is connected to form a reflective surface with the same focal point, or if the focal point is linear, a group of multiple reflective surfaces that differ along the focal point In addition, the optical characteristics of each reflection surface are enhanced, and the light emission characteristics of the lamp device can be improved.
【図１】本発明の無電極放電ランプ装置の第１の実施の
形態の概略を示す縦断面図である。FIG. 1 is a longitudinal sectional view schematically showing a first embodiment of an electrodeless discharge lamp device of the present invention.
【図２】図１において前面の制光体を外した状態の正面
図である。FIG. 2 is a front view of FIG. 1 in a state where a front light control body is removed.
【図３】本発明の無電極放電ランプ装置の第２の実施の
形態の概略を示す縦断面図である。FIG. 3 is a longitudinal sectional view schematically showing a second embodiment of the electrodeless discharge lamp device of the present invention.
【図４】図３において前面の制光体を外した状態の正面
図である。FIG. 4 is a front view showing a state where a front light control body is removed in FIG. 3;
【図５】本発明の無電極放電ランプ装置の第３の実施の
形態の概略を示す縦断面図である。FIG. 5 is a longitudinal sectional view schematically showing a third embodiment of the electrodeless discharge lamp device of the present invention.
Ｌ１，Ｌ２，Ｌ３：無電極放電ランプ装置 １：無電極放電ランプ ２：発光管 ３：バルブ（透光性気密容器） ４：始動用細管 ５：励起コイル ５１，５２：足部 ６：反射鏡 ６Ａ，６Ｂ：反射面 ６１，６２：孔部 ７：点灯回路装置 ７Ｈ：高周波発生回路部 ７Ｓ：始動回路部 ９：本体 L1, L2, L3: electrodeless discharge lamp device 1: electrodeless discharge lamp 2: arc tube 3: bulb (translucent airtight container) 4: starting tube 5: excitation coil 51, 52: foot 6: reflector 6A, 6B: Reflecting surface 61, 62: Hole 7: Lighting circuit device 7H: High frequency generating circuit 7S: Starting circuit 9: Body
Claims (5)
発光管およびこの発光管の外周に配設した励起コイルを
有する無電極放電ランプと；無電極放電ランプが配設さ
れるとともに励起コイルの一対の足部が所定の間隔を隔
て光放射方向に重合した状態で延在され、一方の足部が
電気的に接続され、他方の足部が電気的に離隔して貫通
される透孔を形成した金属製の反射鏡と；励起コイルの
一方の足部および反射鏡と電気的に接続した点灯回路装
置と；無電極放電ランプ、反射鏡および点灯回路装置を
一体的に配設してなる本体と；を具備していることを特
徴とする無電極放電ランプ装置。1. An electrodeless discharge lamp having an arc tube in which a luminous substance is sealed in a translucent airtight container, and an excitation coil disposed on the outer periphery of the arc tube; A pair of legs of the coil extend in a state of being overlapped in the light emitting direction at a predetermined interval, one leg is electrically connected, and the other leg is electrically separated and penetrated. A metal reflector having holes formed therein; a lighting circuit device electrically connected to one foot of the excitation coil and the reflector; and an electrodeless discharge lamp, a reflector and a lighting circuit device integrally provided. And an electrodeless discharge lamp device.
器内に発光物質を封入した発光管およびこの発光管の外
周に配設した励起コイルを有する無電極放電ランプと；
無電極放電ランプが配設されるとともに励起コイルの一
対の足部および始動用細管が所定の間隔を隔て光放射方
向に重合した状態で貫通される透孔を形成した金属製の
反射鏡と；励起コイルの足部と電気的に接続した点灯回
路装置と；無電極放電ランプ、反射鏡および点灯回路装
置を一体的に配設してなる本体と；を具備していること
を特徴とする無電極放電ランプ装置。2. An electrodeless discharge lamp having a light-emitting tube in which a light-emitting substance is sealed in a light-transmitting airtight container to which a starting thin tube is connected, and an excitation coil disposed around the light-emitting tube;
A metal reflecting mirror provided with an electrodeless discharge lamp and having a through-hole through which a pair of feet of the excitation coil and a starting capillary are superimposed in a light emitting direction at predetermined intervals; A lighting circuit device electrically connected to a foot portion of the excitation coil; and a main body in which an electrodeless discharge lamp, a reflector and a lighting circuit device are integrally disposed. Electrode discharge lamp device.
的に接続され、他方の足部が反射鏡と電気的に離隔して
透孔を貫通し、両足部が点灯回路装置に接続しているこ
とを特徴とする請求項２に記載の無電極放電ランプ装
置。3. One of the legs of the excitation coil is electrically connected to the reflector, the other leg is electrically separated from the reflector and penetrates the through hole, and both legs are connected to the lighting circuit device. The electrodeless discharge lamp device according to claim 2, wherein:
イルの足部側が、反射鏡と電気的に接続していることを
特徴とする請求項１または請求項３に記載の無電極放電
ランプ装置。4. The electrodeless discharge according to claim 1, wherein the foot portion of one of the excitation coils located far from the reflector is electrically connected to the reflector. Lamp device.
の異なる曲面からなることを特徴とする請求項１ないし
４のいずれか一に記載の無電極放電ランプ装置。5. The electrodeless discharge lamp device according to claim 1, wherein the shape of the reflecting surface of the reflecting mirror comprises a plurality of successively different curved surfaces.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP26328697A JPH11102608A (en) | 1997-09-29 | 1997-09-29 | Electrodeless discharge lamp device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP26328697A JPH11102608A (en) | 1997-09-29 | 1997-09-29 | Electrodeless discharge lamp device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH11102608A true JPH11102608A (en) | 1999-04-13 |
Family
ID=17387367
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP26328697A Pending JPH11102608A (en) | 1997-09-29 | 1997-09-29 | Electrodeless discharge lamp device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH11102608A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20030042724A (en) * | 2001-11-23 | 2003-06-02 | 주식회사 엘지이아이 | Microwave lighting system |
| JP2014160777A (en) * | 2013-02-20 | 2014-09-04 | Iwasaki Electric Co Ltd | Light source unit and irradiation apparatus |
| CN108150960A (en) * | 2018-02-09 | 2018-06-12 | 超视界激光科技（苏州）有限公司 | A kind of high brightness laser illumination module |
-
1997
- 1997-09-29 JP JP26328697A patent/JPH11102608A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20030042724A (en) * | 2001-11-23 | 2003-06-02 | 주식회사 엘지이아이 | Microwave lighting system |
| JP2014160777A (en) * | 2013-02-20 | 2014-09-04 | Iwasaki Electric Co Ltd | Light source unit and irradiation apparatus |
| CN108150960A (en) * | 2018-02-09 | 2018-06-12 | 超视界激光科技（苏州）有限公司 | A kind of high brightness laser illumination module |
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