JP2003077418A - High pressure discharge lamp and lighting apparatus - Google Patents
High pressure discharge lamp and lighting apparatusInfo
- Publication number
- JP2003077418A JP2003077418A JP2001264300A JP2001264300A JP2003077418A JP 2003077418 A JP2003077418 A JP 2003077418A JP 2001264300 A JP2001264300 A JP 2001264300A JP 2001264300 A JP2001264300 A JP 2001264300A JP 2003077418 A JP2003077418 A JP 2003077418A
- Authority
- JP
- Japan
- Prior art keywords
- small
- arc tube
- discharge lamp
- tube
- outer tube
- 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
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- Non-Portable Lighting Devices Or Systems Thereof (AREA)
- Vessels And Coating Films For Discharge Lamps (AREA)
- Arrangement Of Elements, Cooling, Sealing, Or The Like Of Lighting Devices (AREA)
Abstract
Description
【0001】[0001]
【発明の属する技術分野】本発明は、透光性セラミック
ス放電容器を備えた高圧放電ランプおよびこの放電ラン
プを用いた照明装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a high pressure discharge lamp provided with a translucent ceramics discharge vessel and an illuminating device using this discharge lamp.
【0002】[0002]
【従来の技術】高圧放電ランプは、高効率、長寿命の特
性を有することから種々のランプの開発がすすめられ、
その中で、近年、光ファイバー用光源やハロゲン電球代
替用光源として、ランプ電力が10〜30W程度の小形
のメタルハライドランプがある。2. Description of the Related Art Since high-pressure discharge lamps have characteristics of high efficiency and long life, various lamps have been developed,
Among them, in recent years, as a light source for an optical fiber or a light source for replacing a halogen bulb, there is a small metal halide lamp having a lamp power of about 10 to 30 W.
【0003】この放電ランプは、ランプ部と小形の点灯
回路手段とを一体的に結合して口金が設けられた小形の
高圧放電ランプ装置すなわち電球形高圧放電ランプが本
発明者らによって開発された。The present inventors have developed a small-sized high-pressure discharge lamp device, that is, a bulb-shaped high-pressure discharge lamp, in which a lamp portion and a small-sized lighting circuit means are integrally connected and a base is provided. .
【0004】この電球形高圧放電ランプは、ランプ効率
がハロゲン電球に比較して約3〜4倍であるとともに、
電球形蛍光ランプに比べて著しく小さいので、点光源と
して用いることができ、ランプとともに新しい照明シス
テムとしても発展が期待されている。This bulb-type high pressure discharge lamp has a lamp efficiency about 3 to 4 times that of a halogen bulb, and
Since it is significantly smaller than the bulb-type fluorescent lamp, it can be used as a point light source and is expected to develop as a new lighting system together with the lamp.
【0005】この電球形高圧放電ランプは、発光管が膨
出部の両端に連通して設けられた膨出部より内径が小さ
い一対の小径筒状部を有する透光性セラミックス放電容
器の各小径筒状部内に気密封止された導入導体およびこ
の導入導体に接続され小径筒状部の内面との間に間隙を
隔てて延在しているとともに膨出部内に先端を突出した
一対の電極と、この放電容器内に水銀、ハロゲン化物、
希ガスなどの放電媒体とを封入して形成されている。This bulb-type high-pressure discharge lamp has a small diameter of a translucent ceramics discharge vessel having a pair of small-diameter cylindrical portions whose inner diameter is smaller than that of the bulging portion, in which an arc tube is provided in communication with both ends of the bulging portion. An introduction conductor hermetically sealed in the tubular portion and a pair of electrodes connected to the introduction conductor and extending with a gap between the inner surface of the small-diameter tubular portion and projecting the tip into the bulging portion. , Mercury, halide,
It is formed by enclosing a discharge medium such as a rare gas.
【0006】そして、この発光管を石英ガラス製の外管
内に管軸に沿い配設し、導入導体を外管の一端部に封止
した一対の給電部材に接続するとともに外管の封止部側
の小径筒状部および導入線を硬質ガラスなどの絶縁物か
らなるブリッジ部材で係止して、発光管を外管内に保持
するようにしている。Then, the arc tube is arranged in a quartz glass outer tube along the tube axis, and the introduction conductor is connected to a pair of power supply members sealed at one end of the outer tube and the outer tube sealing portion is connected. The small-diameter cylindrical portion on the side and the lead-in wire are locked by a bridge member made of an insulating material such as hard glass to hold the arc tube in the outer tube.
【0007】このブリッジ部材の役割は、発光管を接続
した一対の給電部材などからなるマウント部材を外管の
開口部から入れて外管を外から加熱縮径させて封止閉塞
する作業を行う際、マウント部材を正し位置に保持して
発光管が外管軸の中心上からずれないように確保した
り、ランプ完成後に衝撃や振動を受けた場合にも発光管
の位置が変わらないよう保持するためである。The role of this bridge member is to insert a mount member consisting of a pair of power supply members connected to the arc tube from the opening of the outer tube and heat-shrink the outer tube from the outside to perform sealing work. At this time, hold the mount member in the correct position to ensure that the arc tube does not deviate from the center of the outer tube axis, and that the position of the arc tube does not change even if it is shocked or vibrated after the lamp is completed. This is for holding.
【0008】このブリッジ部材は、たとえばアルミナな
どのセラミックス製の長立方体形状をなし中央に形成し
た透孔に小径筒状部の導入導体を、両側に形成した透孔
に導入線などで構成する上記一対の給電部材を挿通して
接着剤などの手段で係止したり、あるいは平行させた小
径筒状部と両側にある一対の給電部材を挟むように対向
する方向から溶融軟化した硬質ガラスからなる無垢棒を
押し付け、両無垢棒の側面相互を溶着させることによっ
て一対の給電部材と発光管の導入導体とを一体化してい
る。The bridge member has a long cubic shape made of, for example, ceramics such as alumina and has a through hole formed at the center thereof with a small-diameter cylindrical conductor, and the through holes formed on both sides are provided with lead wires. It consists of a pair of power supply members that are inserted and locked by means such as an adhesive, or are made of hard glass that has been melted and softened from opposite directions so as to sandwich the pair of power supply members on both sides and parallel small-diameter cylindrical parts. The pair of power feeding members and the lead-in conductor of the arc tube are integrated by pressing the solid rod and welding the side surfaces of both solid rods.
【0009】このように給電部材とブリッジ部材を介し
固定された発光管は、保持が強固となって衝撃や振動を
受けた場合でも対処できるとともに外管との封止作業が
容易である。As described above, the arc tube fixed to the power feeding member via the bridge member can be firmly held and can handle shocks and vibrations, and can be easily sealed with the outer tube.
【0010】[0010]
【発明が解決しようとする課題】そして、この放電ラン
プは従来のものに比べて小形化されたが、たとえば上述
したようにハロゲン電球代替用光源とする場合には、ハ
ロゲン電球に比べて全長が長く、また、この電球用の点
灯器具に装着した場合に光中心がずれて配光分布特性が
悪化するなどの不具合があった。This discharge lamp has been made smaller than the conventional one. For example, as described above, in the case of using a light source for halogen bulb replacement, the total length is shorter than that of a halogen bulb. There is a problem that the light center is long and the light distribution is deteriorated when it is attached to the lighting fixture for this light bulb, and the light distribution characteristic is deteriorated.
【0011】そこで、本発明者等は、この問題を回避す
るべく種々究明した結果、ランプ全長の短縮化に成功し
た。すなわち、給電部材と発光管とを一体化しているブ
リッジ部材が外管の封止部側の近くにあると、発光管を
接続した一対の給電部材などからなるマウント部材を外
管の開口部から入れ、酸水素バーナを用い外管を加熱縮
径させ成形金形により押圧して封止部を形成している
が、このときバーナの熱によって硬質ガラスやセラミッ
クなどからなるブリッジ部材にクラックなどの損傷を生
じることがある。Therefore, as a result of various investigations to avoid this problem, the present inventors succeeded in shortening the total length of the lamp. That is, when the bridge member that integrates the power supply member and the arc tube is near the sealing portion side of the outer tube, a mount member including a pair of power supply members connected to the arc tube is installed from the opening of the outer tube. Insertion, the outer tube is heated and reduced using an oxyhydrogen burner and pressed by a molding die to form a sealing part.At this time, the heat of the burner causes cracks in the bridge member made of hard glass or ceramic. May cause damage.
【0012】このブリッジ部材の熱的な損傷を防ぐ手段
としては、導入導体部分を長くしてブリッジ部材を封止
部から遠く離せばよいが、ランプの全長が長くなって上
述したような点灯器具との不適合などの問題を生じる。As a means for preventing thermal damage to the bridge member, it is sufficient to lengthen the lead-in conductor portion and move the bridge member far away from the sealing portion. It causes problems such as incompatibility with.
【0013】本発明は、上記事情に鑑みなされたもの
で、ブリッジ部材の配置を変えることにより全長の短縮
がはかれ小形化した高圧放電ランプおよびこの放電ラン
プを装着した照明装置を提供することを目的とする。The present invention has been made in view of the above circumstances, and provides a high-pressure discharge lamp whose overall length is shortened by changing the arrangement of the bridge members, and a lighting device equipped with this discharge lamp. To aim.
【0014】[0014]
【課題を解決するための手段】請求項1の発明の高圧放
電ランプは、放電空間を形成する膨出部の両端に連通し
て設けられた膨出部より内径が小さい一対の小径筒状部
を有する透光性セラミックス放電容器と、この放電容器
の各小径筒状部内に気密封止された導入導体およびこの
導入導体に接続され小径筒状部内に延在しているととも
に膨出部内に先端を臨ませた一対の電極と、この放電容
器内に封入された放電媒体とからなる発光管と、内部に
この発光管を管軸に沿って配設するとともに気密閉塞さ
れた外管と、この外管の一端部に封止され、上記発光管
の導入導体に電気的に接続するとともに発光管を保持し
た一対の給電部材と、上記外管内にある発光管の少なく
とも一方の小径筒状部が位置する部位において、この小
径筒状部と給電部材または相互の給電部材間を係止した
ブリッジ部材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 a high pressure discharge lamp in which a pair of small-diameter tubular portions having an inner diameter smaller than that of the bulging portion provided at both ends of the bulging portion forming a discharge space. A translucent ceramics discharge vessel having, an introducing conductor hermetically sealed in each small-diameter cylindrical portion of the discharge vessel, and a tip connected to the introducing conductor and extending into the small-diameter cylindrical portion and in a bulging portion. A pair of electrodes facing each other, an arc tube composed of a discharge medium enclosed in the discharge vessel, an outer tube inside of which the arc tube is arranged along the tube axis and airtightly closed, and A pair of power supply members sealed at one end of the outer tube, electrically connected to the introduction conductor of the arc tube and holding the arc tube, and at least one small-diameter tubular portion of the arc tube in the outer tube. In the area where it is located, this small-diameter tubular part and the power feeding part Or characterized in that it comprises a bridge member which locks the mutual power supply member.
【0015】本発明および以下の各発明において、特に
指定しない限り用語の定義および技術的意味は次によ
る。In the present invention and the following inventions, the definitions and technical meanings of terms are as follows unless otherwise specified.
【0016】発光管の放電容器の形状は、放電空間を形
成する膨出部の両端にこの膨出部より内径が小さい連通
した一対の小径筒状部を有する。The shape of the discharge vessel of the arc tube has a pair of small-diameter cylindrical portions that communicate with each other and have an inner diameter smaller than that of the bulging portion forming the discharge space.
【0017】発光管の放電容器を形成する透光性セラミ
ックス材料としては、サファイヤ、アルミニウム酸化物
(アルミナ)、イットリウム−アルミニウム−ガーネッ
トの酸化物(YAG)、イットリウム酸化物(YOX)
やアルミニウム窒化物(AlN)のような光透過性およ
び耐熱性を備えた材料を用いることができる。As the translucent ceramic material forming the discharge vessel of the arc tube, sapphire, aluminum oxide (alumina), yttrium-aluminum-garnet oxide (YAG), yttrium oxide (YOX).
A material having optical transparency and heat resistance such as aluminum nitride (AlN) can be used.
【0018】また、透光性とは放電によって発生した光
を透過して外部に放出できる程度の光透過性を有し、透
明に限らず、光拡散性であってもよい。また、膨出部は
透光性を要するが、小径筒状部など放電による放射を主
としていない部分は、遮光性であってもよい。The light-transmitting property has such a light-transmitting property that the light generated by the discharge can be transmitted and emitted to the outside, and the light-transmitting property is not limited to being transparent and may be light-diffusing property. Further, although the bulging portion needs to have a light-transmitting property, a portion such as a small-diameter tubular portion which is not mainly radiated by discharge may have a light-shielding property.
【0019】さらに、本発明において、放電容器の内容
積は制限されるものではないが、小形の高圧放電ランプ
を得るためには、放電容器を0.06cc以下、好まし
くは0.04cc以下がよい。さらにまた、放電容器の
全長は35mm以下、好ましくは10〜30mmがよ
い。Further, in the present invention, the internal volume of the discharge vessel is not limited, but in order to obtain a compact high-pressure discharge lamp, the discharge vessel should be 0.06 cc or less, preferably 0.04 cc or less. . Furthermore, the total length of the discharge vessel is 35 mm or less, preferably 10 to 30 mm.
【0020】一対の電極は、放電容器の両端の小径筒状
部内に挿通し封装されていて、先端が膨出部内に位置し
ているか、あるいは先端が小径筒状部内に位置している
が膨出部に臨む位置にあってもよく、材料としてはタン
グステンまたはドープドタングステンを用いている。ま
た、電極の先端部は、表面積を大きくして放熱を良好に
するために、必要に応じてタングステンのコイルを巻装
することができる。The pair of electrodes are inserted and sealed in the small-diameter tubular portions at both ends of the discharge vessel, and the tips are located in the bulging portion, or the tips are located in the small-diameter tubular portion, but are expanded. It may be at a position facing the projecting portion, and tungsten or doped tungsten is used as the material. In addition, a tungsten coil can be wound around the tip portion of the electrode as needed in order to increase the surface area and improve heat dissipation.
【0021】また、電極の基端部は、放電容器に対して
電極を所定の位置に固定するとともに、外部から電流を
導入するために機能し、その基端部は導入導体の先端に
溶接などによって固着することで電気的および機械的に
支持されている。The base end portion of the electrode functions to fix the electrode at a predetermined position with respect to the discharge vessel and to introduce an electric current from the outside, and the base end portion is welded to the tip of the introduction conductor. It is electrically and mechanically supported by being fixed by.
【0022】放電媒体は、少なくとも始動ガスおよび緩
衝ガスとして希ガスを含み、点灯中約1気圧以上の圧力
を呈するように放電容器内に封入される。また、放電媒
体は、水銀などの発光物質またはその化合物たとえば金
属ハロゲン化物やアマルガムなどを含む。The discharge medium contains at least a starting gas and a rare gas as a buffer gas, and is enclosed in the discharge container so as to exhibit a pressure of about 1 atm or more during lighting. Further, the discharge medium includes a light emitting substance such as mercury or a compound thereof such as a metal halide or amalgam.
【0023】この金属ハロゲン化物は、発光効率、平均
演色評価数や発光色などの発光特性あるいはランプ電力
や放電容器の内容積などに応じて、たとえば発光金属と
して既知のナトリウムNa、リチウムLi、スカンジウ
ムScおよび希土類金属からなるグループの中から選択
された一種または複数種を、また、ハロゲンとしては、
よう素、臭素、塩素またはフッ素のいずれか一種または
複数種を用いることができる。This metal halide is, for example, sodium Na, lithium Li, or scandium, which is known as a luminescent metal, depending on the luminous efficiency, the average color rendering index, the luminescent characteristics such as the luminescent color, the lamp power and the internal volume of the discharge vessel. One or more selected from the group consisting of Sc and a rare earth metal, and as halogen,
Any one kind or plural kinds of iodine, bromine, chlorine or fluorine can be used.
【0024】また、希ガスとしては、ネオンやアルゴン
などが封入されるが、必要に応じてその他の希ガスを封
入することができる。As the rare gas, neon, argon or the like is filled, but other rare gas can be filled if necessary.
【0025】また、導入導体は、電極に接続してこれを
支持し電極に放電電流を供給するとともにセラミックス
放電容器に気密に封止される機能を有し、かつ、放電容
器の端部から外部に直接または他の接続導体を介して導
出され、発光管を支持するのに利用される。The introduction conductor has a function of connecting to and supporting the electrode, supplying a discharge current to the electrode, and hermetically sealing the ceramics discharge vessel, and from the end of the discharge vessel to the outside. And is used to support the arc tube directly or through another connecting conductor.
【0026】この導入導体は、ニオブ、タンタル、チタ
ン、ジルコニウム、ハフニウムやバナジウムなどの封着
性金属を用い、棒状体、パイプ状体やコイル状体などに
形成する。そして、その選択はセラミックス放電容器の
材料の熱膨張係数などに応じ適宜選べばよい。なお、上
記ニオブなどの酸化性金属を用いる場合は、大気に触れ
ないようにたとえばシールなどによって被覆する必要が
ある。The introduced conductor is made of a sealing metal such as niobium, tantalum, titanium, zirconium, hafnium or vanadium, and is formed into a rod-shaped body, a pipe-shaped body or a coil-shaped body. The selection may be made appropriately according to the coefficient of thermal expansion of the material of the ceramic discharge vessel. When using an oxidizing metal such as niobium, it is necessary to cover it with, for example, a seal so as not to contact the atmosphere.
【0027】外管は石英ガラスやほうけい酸ガラスなど
の硬質ガラスからなる透光性および耐熱性を有する材料
で形成された一端側を閉塞した直管形をなし、他端側の
開口部から上記発光管を保持したマウントを入れ、この
開口部をバーナで加熱して溶融閉塞した封止部が他端側
に形成されている。なお、外管内を排気し、希ガスを封
入するのに用いる排気管は、外管の閉塞された一端側に
あってもこの封止された他端側にあってもよい。The outer tube is made of a hard glass such as quartz glass or borosilicate glass and has a translucent and heat-resistant material, and has a straight tube shape with one end closed, and the other end has an opening. A mount holding the arc tube is inserted, and a sealing portion is formed on the other end side by melting and closing this opening by heating it with a burner. The exhaust pipe used for exhausting the inside of the outer pipe and filling the rare gas may be on one closed side of the outer pipe or on the other sealed side.
【0028】給電部材は、1本の単独材料で形成できれ
ばよいが、封止部内に封止られる部分はガラスとの気密
性やなじみがよい材料を要することから、外管内の給電
線部分、封止部の封止部材部分、外管外に導出した外部
リード部分など複数の材料を接続して構成するのが妥当
で、材料、寸度などの形態は発光管の品種、電力、重
量、外管材料などに合わせ適宜選べばよい。The power feeding member may be formed of one single material, but the portion to be sealed in the sealing portion needs a material that is well airtight and compatible with glass. It is appropriate to connect multiple materials such as the sealing member part of the stopper part, the external lead part led out of the outer tube, etc., and the form such as material and size is the type of arc tube, power, weight, external It may be appropriately selected according to the pipe material and the like.
【0029】また、上記給電部材の外管内給電線部分
は、モリブデンやタングステンなどの金属材料からな
り、発光管両端の導入導体に電気的に接続して給電を行
うとともに発光管を管軸に沿って配設保持する支持部材
を兼ねている。Further, the power supply line portion in the outer tube of the power supply member is made of a metal material such as molybdenum or tungsten, and is electrically connected to the introduction conductors at both ends of the arc tube to supply power, and the arc tube is arranged along the tube axis. It also serves as a support member that is disposed and held.
【0030】外管内において発光管および給電部材を係
止するブリッジ部材は、電気絶縁性および耐熱性の高い
石英ガラスなどの硬質ガラスやアルミナなどのセラミッ
クスから形成されるのが好ましく、発光管の少なくとも
一方の小径筒状部側に設けられていればよい。The bridge member for locking the arc tube and the power supply member in the outer tube is preferably formed of hard glass such as quartz glass having high electric insulation and heat resistance or ceramics such as alumina, and at least the arc tube. It suffices if it is provided on the side of the one small-diameter tubular portion.
【0031】ブリッジ部材は、成形型により造った長立
方体などの棒状体に発光管の小径筒状部または導入導体
および給電部材が介在や近接できる透孔や切欠溝などに
より囲まれたり、ブリッジ部材に植設された部材に引掛
けられたりして係止支承できるものであればよい。The bridge member is surrounded by a rod-shaped body such as a long cube made by a molding die by a small-diameter tubular portion of the arc tube or a through hole or a cutout groove which allows the introduction conductor and the power feeding member to intervene or approach, or the bridge member. Any member can be used as long as it can be locked and supported by being hooked on the member planted in.
【0032】また、ガラス材料の場合は、小径筒状部ま
たは導入導体および給電部材を挟むよう対向した2個の
ガラス棒状体を溶着して固定係止させたり、ガラス棒状
体に直接に部材を埋没固定したり、ガラス棒状体に金属
線を植設して各部材を絶縁して係止するなど、ガラスを
直接に加熱軟化して係止するようにすることもできる。In the case of a glass material, two glass rods facing each other so as to sandwich the small-diameter tubular portion or the introduction conductor and the power feeding member are welded and fixedly locked, or the member is directly attached to the glass rod. The glass may be directly heat-softened and locked, for example, by embedding and fixing it, or by implanting a metal wire in a glass rod to insulate and lock each member.
【0033】また、このブリッジ部材による係止は、発
光管の小径筒状部または導入導体と2本の給電部材の3
者の係止に限らず、小径筒状部または導入導体と1本の
給電部材あるいは小径筒状部または導入導体を除く2本
の給電部材相互の2本の部材の係止であっもよい。The locking by the bridge member is made up of the small-diameter cylindrical portion of the arc tube or the introduction conductor and the three feeding members.
The locking is not limited to the locking by the person, and the locking of two members between the small-diameter tubular portion or the introduction conductor and one power feeding member or the two power feeding members excluding the small-diameter tubular portion or the introduction conductor may be used.
【0034】また、ブリッジ部材と小径筒状部、導入導
体や給電部材との固定は、セラミックスコンパウンドや
耐熱接着剤を用いたり導入導体や給電部材に偏平部を形
成したり、小金属線を交差して溶接などのことにより行
うことができる。The bridge member is fixed to the small-diameter cylindrical portion, the introducing conductor and the power feeding member by using a ceramic compound or a heat-resistant adhesive, forming a flat portion on the introducing conductor or the feeding member, or crossing a small metal wire. Then, it can be performed by welding or the like.
【0035】さらに、外管内の給電線などに、外管内を
清浄にするZr−Al合金などのゲッタを設けておくこ
とは構わない。Further, a getter such as a Zr-Al alloy for cleaning the inside of the outer tube may be provided on the power supply line in the outer tube.
【0036】請求項1の発明の高圧放電ランプは、ブリ
ッジ部材を封止部近傍の導電導体から小径筒状部または
頂部側の小径筒状部に移動したことにより、外管の封止
時にブリッジ部材が受ける熱的影響は低減され破損を防
ぐことができる。また、封止部側の空間の無駄をなくし
ランプの全長短縮がはかれて小形化でき、ハロゲン電球
の代替用光源として、既存の電球用の照明装置において
使用できる。また、ブリッジ部材は、封止部側と頂部側
の小径筒状部の両方または一方側に設けることにより目
的を達成できる。In the high-pressure discharge lamp of the first aspect of the present invention, the bridge member is moved from the conductive conductor in the vicinity of the sealing portion to the small diameter tubular portion or the small diameter tubular portion on the top side, so that the bridge is sealed when the outer tube is sealed. The thermal effect on the member is reduced and damage can be prevented. Further, it is possible to reduce the total length of the lamp by eliminating the waste of the space on the sealing portion side, and to make it compact, and it can be used in a lighting device for an existing bulb as a light source for replacing a halogen bulb. Further, the bridge member can achieve the object by providing the bridge member on both or one side of the small-diameter tubular portion on the sealing portion side and the top portion side.
【0037】すなわち、全長が長いと装置への取付けは
できても、反射鏡などとの組合わせにおいて焦点がずれ
所定の発光特性、特に配光分布特性の低下を来していた
が、本発明品では電球に比べて高効率で寿命も長い電球
形高圧放電ランプが得られる。 また、ブリッジ部材を
有するランプは衝撃や振動などからマウントの変形を防
止して補強がはかれ、また、封止作業時に取扱いが容易
となる。本発明のように、ブリッジ部材を小径筒状部に
移動してもこれらの作用は変わらなく得られる。That is, if the total length is long, the device can be attached to the apparatus, but the combination with a reflecting mirror causes defocusing, resulting in deterioration of predetermined light emission characteristics, particularly light distribution characteristics. As a product, a bulb-type high-pressure discharge lamp with higher efficiency and longer life can be obtained. Further, the lamp having the bridge member is prevented from being deformed due to impact or vibration and is reinforced, and the lamp is easy to handle during the sealing work. Even if the bridge member is moved to the small-diameter tubular portion as in the present invention, these effects can be obtained without change.
【0038】請求項2の発明の高圧放電ランプは、放電
空間を形成する膨出部の両端に連通して設けられた膨出
部より内径が小さい一対の小径筒状部を有する透光性セ
ラミックス放電容器と、この放電容器の各小径筒状部内
に気密封止された導入導体およびこの導入導体に接続さ
れ小径筒状部内に延在しているとともに膨出部内に先端
を臨ませた一対の電極と、この放電容器内に封入された
放電媒体とからなる発光管と、内部にこの発光管を管軸
に沿って配設するとともに気密閉塞された外管と、この
外管の一端部に封止され、上記発光管の導入導体に電気
的に接続するとともに発光管を保持した一対の給電部材
と、上記外管内の他端部側において発光管の小径筒状部
から延在する導入導体と給電部材または相互の給電部材
間を係止したブリッジ部材とを具備していることを特徴
とする。In the high-pressure discharge lamp of the second aspect of the present invention, the translucent ceramic has a pair of small-diameter cylindrical portions having an inner diameter smaller than that of the bulging portion provided in communication with both ends of the bulging portion forming the discharge space. A discharge vessel, an introduction conductor hermetically sealed in each small-diameter tubular portion of the discharge vessel, and a pair of the extension conductor connected to the introduction conductor and extending into the small-diameter tubular portion, with the tip facing the bulging portion. An arc tube consisting of an electrode and a discharge medium enclosed in this discharge vessel, an outer tube inside which this arc tube is arranged along the tube axis and which is hermetically sealed, and an end portion of this outer tube A pair of power feeding members that are sealed and electrically connected to the introduction conductor of the arc tube and hold the arc tube, and an introduction conductor that extends from the small-diameter tubular portion of the arc tube on the other end side in the outer tube. And a bridging member that locks between the feeding members or the mutual feeding members. Characterized in that it comprises a di member.
【0039】本発明はブリッジ部材が外管頂部側の封止
部と離れた導入導体部分に係止されることにより、上記
請求項1に記載と同様な作用を奏する。According to the present invention, the bridge member is locked to the introduction conductor portion which is separated from the sealing portion on the top side of the outer tube, so that the same effect as described in claim 1 can be obtained.
【0040】請求項3の発明の高圧放電ランプは、ブリ
ッジ部材が、発光管の小径筒状部に係止されていること
を特徴とする。The high-pressure discharge lamp according to a third aspect of the present invention is characterized in that the bridge member is locked to the small-diameter tubular portion of the arc tube.
【0041】本発明はブリッジ部材が発光管の小径筒状
部部分に係止されることにより、上記請求項1に記載と
同様な作用を奏する。According to the present invention, the bridge member is locked to the small-diameter tubular portion of the arc tube, and thus the same operation as that described in claim 1 is achieved.
【0042】請求項4の発明の高圧放電ランプは、ブリ
ッジ部材が、発光管の小径筒状部から導出した導入導体
に係止されていることを特徴とする。The high-pressure discharge lamp according to a fourth aspect of the present invention is characterized in that the bridge member is locked to the introduction conductor led out from the small-diameter cylindrical portion of the arc tube.
【0043】本発明はブリッジ部材が発光管の導入導体
部分に係止されることにより、上記請求項1に記載と同
様な作用を奏する。According to the present invention, the bridge member is locked to the introduction conductor portion of the arc tube, so that the same operation as described in claim 1 is achieved.
【0044】請求項5の発明の高圧放電ランプは、ブリ
ッジ部材が、小径筒状部、導入導体または導電部材を囲
繞または当接して係止することを特徴とする。The high-pressure discharge lamp of the fifth aspect of the invention is characterized in that the bridge member surrounds or abuts the small-diameter cylindrical portion, the introducing conductor, or the conductive member and locks them.
【0045】ブリッジ部材への小径筒状部、導入導体や
導電部材の係止は、ブリッジ部材に形成された透孔や切
欠溝などにより囲んだり引掛けたりあるいは、ガラス部
材中に直接埋設したり、絶縁物を介し接続した金属線を
溶接なとで接続することにより支承して、マウント部材
の変形を防止して補強をはかることができる。The small-diameter cylindrical portion, the introduction conductor, and the conductive member are locked to the bridge member by enclosing or hooking them with a through hole or a notch groove formed in the bridge member, or by directly embedding them in a glass member. The metal wires connected via the insulator can be supported by connecting them by welding or the like, and the deformation of the mount member can be prevented and reinforcement can be achieved.
【0046】請求項6の発明の照明装置は、照明装置本
体と、この照明装置本体に設けられた請求項1ないし3
のいずれか一に記載の高圧放電ランプと、インバータを
主体として構成されて高圧放電ランプを高周波点灯する
点灯回路手段とを具備していることを特徴とする。An illumination device according to a sixth aspect of the present invention is an illumination device main body, and the illumination device main body is provided with the illumination device main body.
The high-pressure discharge lamp according to any one of the above 1 to 3 and a lighting circuit means mainly composed of an inverter and for lighting the high-pressure discharge lamp at a high frequency.
【0047】本発明において、照明装置は、高圧放電ラ
ンプの発光を何らかの目的で用いるあらゆる装置を含む
広い概念である。たとえば、電球形高圧放電ランプ、照
明器具、移動体用前照灯、光ファイバー用光源装置、画
像投射装置、光化学装置、指紋判別装置などに適用する
ことができる。In the present invention, the illuminating device is a broad concept including any device that uses the light emission of the high pressure discharge lamp for some purpose. For example, it can be applied to a light bulb type high-pressure discharge lamp, a lighting fixture, a headlight for a moving object, a light source device for optical fiber, an image projection device, a photochemical device, a fingerprint discrimination device, and the like.
【0048】「照明装置本体」とは、上記照明装置から
高圧放電ランプを除いた残余の部分をいう。また、「電
球形高圧放電ランプ」とは、高圧放電ランプと、その点
灯回路手段とを一体化し、さらに受電用の口金を付設し
てなり、口金に適応するランプソケットに装着すること
により、白熱電球を点灯するような感覚で使用すること
ができるように構成した照明装置を意味する。The "illuminating device main body" refers to the remaining portion of the above-mentioned illuminating device except the high pressure discharge lamp. A "bulb-shaped high-pressure discharge lamp" is an incandescent lamp that has a high-voltage discharge lamp integrated with its lighting circuit means, and is equipped with a power-receiving base. It means an illuminating device configured to be used as if a light bulb were lit.
【0049】[0049]
【発明の実施の形態】以下、本発明の実施の形態を図面
を参照して説明する。図1は、本発明の高圧放電ランプ
の第1の実施形態を示す一部断面正面図である。図2
は、同じく要部の拡大断面正面図、図3(a)〜(i)
は本発明が適用できるブリッジ部材の各種実施の形態を
示す説明図である。BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a partial cross-sectional front view showing a first embodiment of the high pressure discharge lamp of the present invention. Figure 2
Is also an enlarged cross-sectional front view of the main part, FIGS.
FIG. 4 is an explanatory view showing various embodiments of a bridge member to which the present invention can be applied.
【0050】図において、高圧放電ランプL1は、発光
管1A、この発光管1Aを支持した一対の給電部材5
A,5B、上記発光管1Aおよび一対の給電部材5A,
5Bを係止したブリッジ部材6A、金属製コイル7a,
7b、これら部品を内部に収容した外管4および外部リ
ード53a,53bを主体として構成されている。In the figure, a high-pressure discharge lamp L1 includes an arc tube 1A and a pair of power supply members 5 supporting the arc tube 1A.
A, 5B, the arc tube 1A and the pair of power supply members 5A,
Bridge member 6A locking 5B, metal coil 7a,
7b, the outer tube 4 accommodating these parts inside and the outer leads 53a, 53b are mainly constituted.
【0051】発光管1Aは、ほぼ球状をなしている膨出
部11の両端に連続的な曲面によって繋った小径筒状部
12a,12bが連設された透光性セラミックスからな
る放電容器1を有し、この放電容器1の小径筒状部12
a,12bの先端内を貫通して、電極2A,2Bに接続
したニオブからなる線状の導入導体23a,23bがシ
ール剤13,13により気密に封止られた上下対称構造
をしている。The arc tube 1A is a discharge vessel 1 made of a translucent ceramic in which small-diameter cylindrical portions 12a and 12b connected to each other by continuous curved surfaces are connected to both ends of a substantially spherical bulging portion 11. And a small-diameter cylindrical portion 12 of the discharge vessel 1.
The linear introducing conductors 23a and 23b made of niobium and penetrating through the tips of a and 12b and connected to the electrodes 2A and 2B are hermetically sealed by the sealing agents 13 and 13 to form a vertically symmetrical structure.
【0052】また、上記各電極2A,2Bは、小径筒状
部12a,12b内に位置して一端側を上記導入導体2
3a,23bに突合せ溶接により接続し他端側を膨出部
11に臨ませたタングステン線からなる電極軸21およ
びこの電極軸21の先端にタングステン細線を巻装した
コイル状部22から構成されている。The electrodes 2A and 2B are located inside the small-diameter cylindrical portions 12a and 12b, and one end of each of the electrodes 2A and 2B is the introduction conductor 2.
3a, 23b is connected by butt welding and the other end side is made up of an electrode shaft 21 made of a tungsten wire facing the bulging portion 11 and a coiled portion 22 in which a tungsten fine wire is wound at the tip of the electrode shaft 21. There is.
【0053】なお、このとき小径筒状部12a,12b
内を貫通する電極軸21と小径筒状部12a,12b内
壁面との隙間は0.1mm以下となっていて、隙間が大
きい場合は、電極軸21にモリブデンなどの細線からな
るコイル25を巻装して隙間を小さくしてもよく、この
コイル25の外側面が小径筒状部12a,12bの内面
と接触していてもよい。また、上記電極軸21の先端の
コイル状部22は必須のものではない。At this time, the small-diameter cylindrical portions 12a, 12b
The gap between the electrode shaft 21 penetrating the inside and the inner wall surface of the small-diameter cylindrical portions 12a, 12b is 0.1 mm or less. If the gap is large, a coil 25 made of a fine wire such as molybdenum is wound around the electrode shaft 21. The coil 25 may be mounted to reduce the gap, and the outer surface of the coil 25 may be in contact with the inner surfaces of the small-diameter cylindrical portions 12a and 12b. Further, the coiled portion 22 at the tip of the electrode shaft 21 is not essential.
【0054】また、上記導入導体23a,23bの封止
は、放電容器1を縦位置にセットしてたとえば小径筒状
部12aの端面および導出している導入導体23a部分
の周りにセラミックス封止用のコンパウンドからなるシ
ール剤13を施与し、コンパウンドを加熱溶融させて小
径筒状部12a内壁と導入導体23aとの隙間に侵入さ
せ、導入導体23aの周囲および電極軸21との接続部
を被覆し、冷却固化することにより行われる。また、小
径筒状部12b側も同様に封止が行われ一対の電極2
A,2Bは相対した所定の位置に固定される。The introduction conductors 23a and 23b are sealed by setting the discharge vessel 1 in the vertical position and sealing the ceramics, for example, around the end face of the small diameter cylindrical portion 12a and the introduced introduction conductor 23a portion. The sealant 13 composed of the compound is applied, and the compound is heated and melted to penetrate into the gap between the inner wall of the small-diameter cylindrical portion 12a and the introduction conductor 23a to cover the periphery of the introduction conductor 23a and the connection portion with the electrode shaft 21. Then, it is cooled and solidified. Further, the small-diameter cylindrical portion 12b side is also similarly sealed, and the pair of electrodes 2
A and 2B are fixed at predetermined relative positions.
【0055】また、この発光管1Aの放電容器1内に
は、放電媒体としてネオンおよびアルゴンを含む始動ガ
スおよびバッファガスならびに発光金属としての金属ハ
ロゲン化物と水銀とが封入されている。In the discharge vessel 1 of the arc tube 1A, a starting gas containing neon and argon as a discharge medium and a buffer gas, and a metal halide as a light emitting metal and mercury are sealed.
【0056】また、4は石英ガラスなどで形成された一
端(上部)側を閉塞した直管(T)形の外管で、他端
(下部)側の開口部から上記発光管1Aを保持したマウ
ントを入れ、この開口部をバーナで加熱して溶融閉塞し
た圧潰封止部41が他端側に形成されている。また、内
部は封止部41形成後に排気管42を通じ排気された真
空雰囲気にある。なお、図中43は、排気管42のチッ
プオフ部である。Reference numeral 4 denotes a straight tube (T) type outer tube formed of quartz glass or the like with one end (upper) side closed, and holds the arc tube 1A from the opening on the other end (lower) side. A crushing seal portion 41 is formed on the other end side in which a mount is put and the opening portion is heated by a burner and melted and closed. Further, the inside is in a vacuum atmosphere exhausted through the exhaust pipe 42 after the sealing portion 41 is formed. Note that reference numeral 43 in the drawing denotes a tip-off portion of the exhaust pipe 42.
【0057】また、この圧潰封止部41内には、後述す
る給電部材5A,5Bの一部を構成する封止部材として
モリブデン箔からなる一対の金属箔51a,51bが封
止されている。In addition, a pair of metal foils 51a and 51b made of molybdenum foil are sealed in the crushing and sealing portion 41 as a sealing member forming a part of power feeding members 5A and 5B described later.
【0058】この給電部材5A,5Bは、上記封止部材
として金属箔51a,51b部分と、この金属箔51
a,51bの一端側に接続され外管4内に延在するモリ
ブデン線などからなる給電線52a,52b部分と、他
端側に接続され外管4外に延在するモリブデン線などか
らなる外部リード部材53a,53b部分とで構成され
ている。The power feeding members 5A and 5B include metal foils 51a and 51b as the sealing member and the metal foil 51.
a, 51b connected to one end side of the outer pipe 4 and the power supply line 52a, 52b formed of molybdenum wire and the like, and the other end connected to the outside of the outer tube 4 molybdenum wire and the like. It is composed of lead members 53a and 53b.
【0059】そして、上記給電線52a,52b部分は
外管4軸に沿ってほぼ平行に、かつ離間して延在してい
る。図示、左側の給電線52aは外管4の頂部近くで導
電線54aを介して発光管1の導入導体23aと溶接な
どの手段で接続され、右側の給電線52bは封止部41
側の小径筒状部12bの導入導体23bと導電線54b
を介し接続されている。The power supply lines 52a and 52b extend substantially parallel to and apart from each other along the four axes of the outer tube. The power supply line 52a on the left side in the drawing is connected to the introduction conductor 23a of the arc tube 1 by means such as welding via a conductive line 54a near the top of the outer tube 4, and the power supply line 52b on the right side is connected to the sealing part 41.
Side small diameter cylindrical portion 12b of the introduction conductor 23b and the conductive wire 54b
Connected through.
【0060】また、6Aはブリッジ部材で、図3(a)
に斜視図で示すように、電気絶縁性の高いアルミナなど
のセラミックスなどからなる長立方体をなし、部材6A
を貫通して3つの透孔61,62,62が形成されてい
る。6A is a bridge member, which is shown in FIG.
As shown in a perspective view in Fig. 6, a long cube made of ceramics such as alumina having high electric insulation is formed.
Through, three through holes 61, 62, 62 are formed.
【0061】そして、一方のブリッジ部材6Aは、外管
4の頂部側においてそれぞれの透孔61,62,62に
導入導体23aおよび一対の給電線52a,52bを挿
通して、透孔61,62a,62bの開口部または内部
に封止で用いたセラミックス封止用のコンパウンドや耐
熱性接着剤を施与して導入導体23aと一対の給電線5
2a,52bとの3者を一体的に係止固定している。The one bridge member 6A is inserted through the introduction conductor 23a and the pair of power supply lines 52a, 52b into the through holes 61, 62, 62 on the top side of the outer tube 4 to form the through holes 61, 62a. , 62b, and a ceramic sealing compound used for sealing or a heat-resistant adhesive is applied to the introduction conductor 23a and the pair of power supply lines 5
The three members, 2a and 52b, are integrally locked and fixed.
【0062】また、他方のブリッジ部材6Aは、外管4
の封止部41側においてそれぞれの透孔61,62,6
2に小径筒状部12bおよび一対の給電線52a,52
bを挿通して、上記と同様に耐熱性接着剤などで小径筒
状部12b一対の給電線52a,52bとの3者を一体
的に係止固定している。The other bridge member 6A is the outer tube 4
Of the through holes 61, 62, 6 on the sealing portion 41 side of the
2 has a small-diameter cylindrical portion 12b and a pair of power supply lines 52a, 52.
Similarly to the above, the small-diameter cylindrical portion 12b and the pair of power supply lines 52a and 52b are integrally locked and fixed by inserting b through b.
【0063】このブリッジ部材6A,6Aの取付けは、
給電部材5A,5Bに発光管1を組付けるマウント作業
の際に行われる。The bridge members 6A and 6A are attached by
This is performed when mounting the arc tube 1 to the power supply members 5A and 5B.
【0064】したがって、この給電部材5A,5Bの外
管4内に延在する給電線52a,52b部分は、発光管
両端の導入導体23a,23bに電気的に接続して給電
を行うとともに発光管を管軸に沿って配設保持する支持
部材を兼ねている。Therefore, the portions of the power supply lines 52a and 52b extending into the outer tube 4 of the power supply members 5A and 5B are electrically connected to the introduction conductors 23a and 23b at both ends of the arc tube to supply power, and at the same time, the arc tube. Also serves as a support member for arranging and holding along the pipe axis.
【0065】また、上下の小径筒状部12a,12bの
外周には、金属製コイル7a,7bが巻装されていると
ともに、金属製コイル7aの終端が給電部材5A側の給
電線52aに、金属製コイル7bの終端が給電部材5B
側の給電線52bにそれぞれ接続している。Further, metal coils 7a and 7b are wound around the outer circumferences of the upper and lower small-diameter cylindrical portions 12a and 12b, and the end of the metal coil 7a is connected to the power supply line 52a on the power supply member 5A side. The end of the metal coil 7b is the power feeding member 5B.
Side power supply line 52b.
【0066】すなわち、この金属製コイル7a,7b
は、小径筒状部12a,12bの内部に位置する電極2
A,2Bと反対電位にある。That is, the metal coils 7a, 7b
Is the electrode 2 located inside the small-diameter cylindrical portions 12a, 12b.
It has the opposite potential to A and 2B.
【0067】そして、この放電ランプは、品種や用途に
応じて外管1の封止部41に口金が設けられるとともに
口金の端子部に外部リード53a,53bが接続され放
電ランプL1が完成する。In this discharge lamp, a base is provided in the sealing portion 41 of the outer tube 1 according to the type and application, and the external leads 53a and 53b are connected to the terminals of the base to complete the discharge lamp L1.
【0068】この放電ランプL1は、図示しないインバ
ータを有する高周波点灯回路装置から、給電部材5A,
5Bを介し発光管4の導入導体23a,23b−電極2
A,2Bおよび金属コイル7a,7bに通電される。The discharge lamp L1 is supplied from the high frequency lighting circuit device having an inverter (not shown) to the power feeding member 5A,
Introduction conductors 23a, 23b of the arc tube 4 via 5B-electrode 2
A, 2B and metal coils 7a, 7b are energized.
【0069】そして、この放電ランプL1は、外管4と
マウントとを封止する際に、外管4の開口部の周壁面は
水素バーナなどの強火で加熱されるが、封止部41側は
この封止部41より離れた小径筒状部12bに設けられ
ているので、過熱などによる熱的影響を軽減してブリッ
ジ部材6Aがクラックなどにより損傷することがない。In the discharge lamp L1, when the outer tube 4 and the mount are sealed, the peripheral wall surface of the opening of the outer tube 4 is heated by a strong flame such as a hydrogen burner. Is provided in the small-diameter cylindrical portion 12b which is separated from the sealing portion 41, the thermal effect due to overheating or the like is reduced and the bridge member 6A is not damaged by cracks or the like.
【0070】従来はこのブリッジ部材6Aの損傷を防ぐ
ため、ブリッジ部材6Aを封止部41より離すことでブ
リッジ部材の昇温低下をはかっていたのでランプの全長
が長くなっていた。Conventionally, in order to prevent the damage of the bridge member 6A, the temperature of the bridge member is lowered by separating the bridge member 6A from the sealing portion 41, so that the total length of the lamp becomes long.
【0071】また、外管4の頂部側に設けたブリッジ部
材6Aは封止部41より離れているので熱的には全く問
題ない。Further, since the bridge member 6A provided on the top side of the outer tube 4 is separated from the sealing portion 41, there is no thermal problem at all.
【0072】本発明の放電ランプは、ブリッジ部材6A
の配設位置を封止部41に近い導入導体23bから小径
筒状部12bに、また、もう一つのブリッジ部材6Aを
頂部側に設けることによって、封止部41側の空間を少
なくしてランプの全長短縮がはかれ小形化でき、ハロゲ
ン電球の代替用光源として、既存の電球用の照明装置を
用いることができる。The discharge lamp of the present invention comprises a bridge member 6A.
The arrangement position of the lamp is provided from the introduction conductor 23b near the sealing portion 41 to the small-diameter cylindrical portion 12b, and another bridge member 6A is provided on the top side, thereby reducing the space on the sealing portion 41 side and reducing the lamp. The total length of the lamp can be shortened and the size can be reduced, and an existing lighting device for a light bulb can be used as a light source for replacing a halogen light bulb.
【0073】すなわち、全長が長いと装置への取付けは
できても、反射鏡などとの組合わせにおいて焦点がずれ
所定の発光特性、特に配光分布特性の低下を来していた
が、本発明品では電球に比べて高効率で寿命も長い電球
形高圧放電ランプが得られる。That is, if the total length is long, the device can be attached to the device, but the focus is deviated in combination with a reflecting mirror or the like, and predetermined light emission characteristics, particularly light distribution distribution characteristics are deteriorated. As a product, a bulb-type high-pressure discharge lamp with higher efficiency and longer life can be obtained.
【0074】また、外管4とマウントとの封止の際に、
ブリッジ部材6Aが熱的影響を受けて損傷することを低
減して歩留の向上がはかれた。When the outer tube 4 and the mount are sealed,
The yield of the bridge member 6A was improved by reducing damage to the bridge member 6A due to thermal influence.
【0075】また、ブリッジ部材6A,6Aは衝撃や振
動などからマウントの変形を防止して補強をはかり、か
つ、封止作業時にマウントの取扱いが容易となる作用効
果を有する。また、この実施の形態では外管4内の上下
に2個のブリッジ部材6A,6Aを設けたが、2個必須
のものでなく、所定の強度に対応できればこの態様で上
下いずれか一方の1個のブリッジ部材6Aが設けられて
いればよい。Further, the bridge members 6A, 6A have an effect that the mount is prevented from being deformed due to impact or vibration to reinforce, and the mount can be easily handled during the sealing work. Further, in this embodiment, two bridge members 6A, 6A are provided above and below the outer tube 4, but two bridge members 6A and 6A are not essential, and one of the bridge members 6A and 6A is provided in this manner as long as a predetermined strength can be dealt with. It suffices if the individual bridge members 6A are provided.
【0076】したがって、耐衝撃性や耐振動性などが高
く、歩留りの低下がなく生産性が向上できるとともに既
存の点灯装置などで所定の発光特性を呈する高圧放電ラ
ンプL1を提供できる。Therefore, it is possible to provide the high-pressure discharge lamp L1 having high impact resistance and vibration resistance, improving the productivity without lowering the yield, and exhibiting a predetermined light emission characteristic in the existing lighting device.
【0077】[0077]
【実施例】図1ないし図3に示すものと類似する高圧放
電ランプであって、ブリッジ部材6Aは頂部側の1個の
み設けたランプである。以下の仕様で実験を行った。BEST MODE FOR CARRYING OUT THE INVENTION A high pressure discharge lamp similar to that shown in FIGS. 1 to 3, in which only one bridge member 6A is provided on the top side. An experiment was conducted with the following specifications.
【0078】ランプ電力が21Wで、発光管は透光性ア
ルミナセラミックス製で、全長約31.6mm、膨出部
11の外径約6mm、内径約5mm(肉厚約0.5m
m)、小径筒状部12a,12bの外径約1.7mm、
内径約0.7mm(肉厚約0.5mm)、長さが約8m
mである。The lamp power is 21 W, the arc tube is made of translucent alumina ceramics, and the total length is about 31.6 mm, the outer diameter of the bulging portion 11 is about 6 mm, the inner diameter is about 5 mm (wall thickness is about 0.5 m.
m), the outer diameter of the small-diameter cylindrical portions 12a, 12b is about 1.7 mm,
Inner diameter about 0.7mm (wall thickness about 0.5mm), length about 8m
m.
【0079】電極2A,2Bは、タングステンから形成
さた電極軸部21の外径約0.2mm、長さ約2.5m
mで、コイル部22は外径約0.13mmのタングステ
ン線材を密ピッチで約4ターン巻回され、両者の電極間
距離約3.5mmである。The electrodes 2A and 2B have an electrode shaft portion 21 made of tungsten and having an outer diameter of about 0.2 mm and a length of about 2.5 m.
In m, the coil portion 22 is formed by winding a tungsten wire having an outer diameter of about 0.13 mm at a close pitch for about 4 turns, and the distance between the electrodes of the two is about 3.5 mm.
【0080】導入導体23a,23bは、ニオブから形
成され、外径が約0.64mm、長さが約8mmであ
る。The introducing conductors 23a and 23b are made of niobium and have an outer diameter of about 0.64 mm and a length of about 8 mm.
【0081】放電媒体としては、始動ガスおよびバッフ
ァガスとしてアルゴン約3容積%とネオン残部との混合
希ガスを約100toorと、よう化ナトリウムNaI−よ
う化タリウムTlI−よう化インジウムInI−よう化
ジスプロシウムDyI3 のハロゲン化物が約2.0mg
(発光金層のハロゲン化物は、点灯中にその全てが蒸発
しないで、余剰分が小径筒状部12a,12bと電極軸
21との隙間内に滞留する程度の量封入している。)お
よび水銀Hgが約2.0mg封入している。As the discharge medium, about 100 toor of a starting gas and a mixed gas of about 3% by volume of argon as a buffer gas and the balance of neon, sodium iodide NaI-thallium iodide TlI-indium iodide InI-dysprosium iodide was used. Approximately 2.0 mg of DyI3 halide
(All of the halide of the light emitting gold layer is not evaporated during lighting, and the surplus is enclosed in the gap between the small-diameter cylindrical portions 12a and 12b and the electrode shaft 21.) and About 2.0 mg of mercury Hg is enclosed.
【0082】また、外管4は石英ガラス製で、外径約1
2mm、内径約10mm(肉厚約1.0mm)、全長約
60mm、空間部全長約45mm、封止部長さ約15m
mである。The outer tube 4 is made of quartz glass and has an outer diameter of about 1
2 mm, inner diameter about 10 mm (wall thickness about 1.0 mm), total length about 60 mm, space part total length about 45 mm, sealing part length about 15 m
m.
【0083】また、ブリッジ部材6Aは図3(a)に示
すようなアルミナセラミックス製の長さ約8.5mm、
各辺の幅約3mmの長立方体形状をなし、中央の導入導
体23a挿通用の透孔61径が約0.3mm、給電線5
2a,52bの透孔62径が約0.8mmで、これら透
孔61,62,62に貫通して下面側が頂部側の導入導
体23aのコンパウンド13に当接している。The bridge member 6A is made of alumina ceramics and has a length of about 8.5 mm as shown in FIG.
It has a long cube shape with a width of about 3 mm on each side, the diameter of the through hole 61 for inserting the introduction conductor 23a in the center is about 0.3 mm, and the power supply line 5
The diameter of the through holes 62 of 2a and 52b is about 0.8 mm, and the lower surface side is in contact with the compound 13 of the introduction conductor 23a on the top side while penetrating these through holes 61, 62 and 62.
【0084】また、給電部材5A,5Bの給電線52
a,52bは線外径が約0.3mmで、モリブデンから
なる金属箔51a,51bは,長さ約6.5mm、幅約
3mmで、外部リード53a,53bはモリブデン製の
線外径が約0.5mmである。Further, the power supply line 52 of the power supply members 5A and 5B
a and 52b have a wire outer diameter of about 0.3 mm, metal foils 51a and 51b made of molybdenum have a length of about 6.5 mm and a width of about 3 mm, and outer leads 53a and 53b have a wire outer diameter of about molybdenum. It is 0.5 mm.
【0085】金属製コイルは、直径約0.2mmのモリ
ブデン線を巻きピッチ200%で約7ターン、膨出部1
1に隣接する位置から小径筒状部12a,12bの外周
面に密接して巻装していて、全長は約8mmである。The metal coil is made of molybdenum wire having a diameter of about 0.2 mm and wound at 200% pitch for about 7 turns.
It is wound in close contact with the outer peripheral surfaces of the small-diameter tubular portions 12a and 12b from a position adjacent to 1, and the total length is about 8 mm.
【0086】そして、上記構成の高圧放電ランプL1
を、100本製造したがブリッジ部材6Aのクラックな
どの破損発生率は0%(従来は約5%程度発生)で、歩
留を大幅に向上できた。The high-pressure discharge lamp L1 having the above structure
Although 100 bridges were manufactured, the occurrence rate of damage such as cracks in the bridge member 6A was 0% (conventionally about 5% was generated in the past), and the yield was significantly improved.
【0087】図4は、本発明の高圧放電ランプの第2の
実施の形態を示す一部断面正面図である。図において、
図1と同一部分については同一の符号を付してその説明
は省略する。FIG. 4 is a partially sectional front view showing a second embodiment of the high pressure discharge lamp of the present invention. In the figure,
The same parts as those in FIG. 1 are designated by the same reference numerals and the description thereof will be omitted.
【0088】第2の実施の形態に示す高圧放電ランプL
2は、頂部側の小径筒状部12aにブリッジ部材6Aを
挿通配設し、封止部41側の小径筒状部12b側にのみ
金属製コイル7aが巻装されている。High-pressure discharge lamp L shown in the second embodiment
2, the bridge member 6A is inserted through the small diameter tubular portion 12a on the top side, and the metal coil 7a is wound only on the small diameter tubular portion 12b side on the sealing portion 41 side.
【0089】このような構成とすることによりブリッジ
部材6Aが膨出部11側に近付いたので、上記第1の実
施の形態より外管4の全長をさらに短縮できる。With this structure, the bridge member 6A comes closer to the bulging portion 11 side, so that the total length of the outer tube 4 can be further shortened as compared with the first embodiment.
【0090】そして、この放電ランプL2も上記第1の
実施の形態とと同様に、ブリッジ部材6Aがマウント部
材を強固に保持するとともに作業性の向上に役立つ。ま
た、補助電極としての金属製コイルが1本であるが、点
灯には支障がなかった。Also in this discharge lamp L2, the bridge member 6A firmly holds the mount member and helps improve workability as in the first embodiment. Further, although there is only one metal coil as the auxiliary electrode, there was no problem in lighting.
【0091】さらに、上記第1の実施の形態では口金を
設けていなかったが、外管4端部の封止部41にたとえ
ばE形の口金50を設けるとともに外部リード53a,
53bを給電部に接続するようにしてもよい。Further, although the base is not provided in the first embodiment, for example, the E-shaped base 50 is provided in the sealing portion 41 at the end portion of the outer tube 4 and the external leads 53a,
You may make it connect 53b to an electric power feeding part.
【0092】図5は、本発明の照明装置の第1の実施の
形態としてのスポットライト8を示す一部中央断面側面
図である。FIG. 5 is a partial central cross-sectional side view showing the spotlight 8 as the first embodiment of the illuminating device of the present invention.
【0093】図において、80はスポットライト本体
(照明装置本体)、L1は第1の実施の形態に示す高圧
放電ランプで外管4の端部に口金50が設けられてい
る。In the figure, reference numeral 80 is a spotlight main body (illuminating device main body), and L1 is the high pressure discharge lamp shown in the first embodiment, in which a base 50 is provided at the end of the outer tube 4.
【0094】スポットライト本体80は、主として天井
取付部81、アーム82、本体ケース83、ランプソケ
ット84、反射鏡85、遮光筒86および前面ガラス8
7を備えている。天井取付部81は、天井に取り付けら
れてスポットライト8を吊持するとともに、天井裏に配
設される点灯回路手段(図示しない。)に接続して、ここ
から給電される。The spotlight main body 80 mainly comprises a ceiling mounting portion 81, an arm 82, a main body case 83, a lamp socket 84, a reflecting mirror 85, a light shielding tube 86 and a front glass 8.
Equipped with 7. The ceiling mounting portion 81 is mounted on the ceiling to suspend the spotlight 8 and is connected to a lighting circuit means (not shown) arranged behind the ceiling so that power is supplied from here.
【0095】アーム82は、基端が取付部81に固定さ
れている。本体ケース83は、前面が開口した容器状を
なし、アーム82の先端に垂直面内において俯仰自在に
枢着されている。なお、図中の2点鎖線は、本体ケース
83を基準にしたときのアーム82の俯仰調節可能な範
囲を説明している。ランプソケット84は、E11形口
金用に適合するもので、本体ケース83内に配設されて
いる。The base end of the arm 82 is fixed to the mounting portion 81. The main body case 83 has a container shape with an open front surface, and is pivotally attached to the tip of the arm 82 in a vertical plane so as to be lifted and lowered. It should be noted that the two-dot chain line in the figure illustrates the range in which the arm 82 can be lowered and raised with respect to the main body case 83. The lamp socket 84 is suitable for the E11 type base and is arranged in the main body case 83.
【0096】反射鏡85は、ランプソケット84の前方
に位置して本体ケース83に配設されている。遮光筒8
6は、反射鏡85の開口端の中央部に配設されている。
前面ガラス87は、本体ケース83の開口端に配設され
ている。The reflecting mirror 85 is located in front of the lamp socket 84 and is arranged in the main body case 83. Light-blocking tube 8
6 is arranged at the center of the opening end of the reflecting mirror 85.
The front glass 87 is arranged at the open end of the main body case 83.
【0097】高圧放電ランプL1は、図1ないし図3に
示すのと同一仕様であり、放電ランプL1の口金50を
ランプソケット84に装着することにより、スポットラ
イト本体80に取り付けられている。また、高圧放電ラ
ンプL1が取り付けられている状態で遮光筒86が外管
4先端からの光を遮光して、グレアを防止する。The high-pressure discharge lamp L1 has the same specifications as shown in FIGS. 1 to 3, and is attached to the spotlight main body 80 by attaching the base 50 of the discharge lamp L1 to the lamp socket 84. Further, with the high-pressure discharge lamp L1 attached, the light shielding tube 86 shields light from the tip of the outer tube 4 to prevent glare.
【0098】図6は、本発明の高圧放電ランプの第3の
実施の形態および本発明の照明装置の第2の実施の形態
としての電球形高圧放電ランプL3を示す要部断面正面
図である。FIG. 6 is a cross-sectional front view of essential parts showing a light bulb shaped high pressure discharge lamp L3 as a third embodiment of the high pressure discharge lamp of the present invention and a second embodiment of the illumination device of the present invention. .
【0099】図において、電球形高圧放電ランプL3
は、口金50が設けられるとともに内部に点灯回路手段
91が配設された基体90と、この基体90と接続した
内部に高圧放電ランプL4や反射鏡96が収容配設され
たカバー体92とから構成されている。In the figure, a bulb-type high-pressure discharge lamp L3
Is composed of a base body 90 in which the base 50 is provided and the lighting circuit means 91 is provided therein, and a cover body 92 in which the high pressure discharge lamp L4 and the reflecting mirror 96 are accommodated and arranged inside the base body 90 connected to the base body 90. It is configured.
【0100】まず、この図に示す高圧放電ランプL4が
上述した高圧放電ランプL2と相違する点は、発光管1
Aは同じであるが、導入導体23a,23bが外管4内
の給電線52a,52bと直接に接続されているととも
にブリッジ部材6Gは小径筒状部12aと一方の給電線
52aとを係止している。また、石英ガラスやアルミノ
シリケートガラスなどからなる外管4の場合は、一端側
に形成した封止部41内には封止部材として線状のモリ
ブデンが用いられて気密に封止られ、この封止部41に
は口金が設けられていない。First, the high-pressure discharge lamp L4 shown in this figure differs from the above-mentioned high-pressure discharge lamp L2 in that the arc tube 1
Although A is the same, the introduction conductors 23a and 23b are directly connected to the power supply lines 52a and 52b in the outer tube 4, and the bridge member 6G locks the small-diameter cylindrical portion 12a and one power supply line 52a. is doing. Further, in the case of the outer tube 4 made of quartz glass, aluminosilicate glass, or the like, linear molybdenum is used as a sealing member in the sealing portion 41 formed at one end side to hermetically seal it. The stopper 41 is not provided with a base.
【0101】基体90は耐熱合成樹脂製の両端が開口し
た円錐体形状をなし、一端側にE形の口金50が設けら
れるとともに内部に点灯回路手段91が配設されてい
る。この点灯回路手段91は、配線基板91aに抵抗、
コンデンサ、スイッチング素子や巻線などの所要の回路
部品91bを接続構成したものからなる。The base body 90 is made of a heat-resistant synthetic resin and has a conical shape with both ends open. An E-shaped base 50 is provided on one end side and a lighting circuit means 91 is provided inside. The lighting circuit means 91 includes a wiring board 91a having a resistor,
It is configured by connecting required circuit components 91b such as a capacitor, a switching element and a winding.
【0102】また、この基体90と合致して接続される
カバー体92は、耐熱性合成樹脂製で、図において上部
側に形成された台座93の中心部に装着孔93aが、上
部外周縁に取付部94が、また、下部外周縁に中空のコ
ップ状のスカート部95が設けられている。The cover body 92, which is connected to the base body 90 in conformity with it, is made of a heat-resistant synthetic resin, and has a mounting hole 93a at the center of a pedestal 93 formed on the upper side in the figure and an outer peripheral edge on the upper side. A mounting portion 94 is provided, and a hollow cup-shaped skirt portion 95 is provided on the outer peripheral edge of the lower portion.
【0103】また、96はガラス成形により椀状に成形
された内面にアルミニウム蒸着膜からなる反射面96a
を形成した反射鏡で、背面中央に円筒状の突部97を一
体に形成してある。Further, reference numeral 96 denotes a reflecting surface 96a made of a vapor-deposited aluminum film on the inner surface formed into a bowl shape by glass molding.
A cylindrical projection 97 is integrally formed at the center of the rear surface of the reflecting mirror.
【0104】そして、上記台座93中心部の装着孔93
a内に、反射鏡96の突部97および放電ランプL4の
封止部41を位置させ、その周囲に耐熱性接着剤98を
充填して一体的に接合してある。このとき、放電ランプ
L4の膨出部11が反射鏡96の焦点に合わせ配設さ
れ、スカート部95は、反射鏡96の周囲を包囲して保
護するとともに外観を整えている。The mounting hole 93 at the center of the pedestal 93
The protrusion 97 of the reflecting mirror 96 and the sealing portion 41 of the discharge lamp L4 are located inside a, and the periphery thereof is filled with a heat resistant adhesive 98 and integrally joined. At this time, the bulging portion 11 of the discharge lamp L4 is arranged so as to match the focal point of the reflecting mirror 96, and the skirt portion 95 surrounds and protects the periphery of the reflecting mirror 96 and adjusts the appearance.
【0105】また、99は反射鏡96の開口部に低融点
フリットガラス99aを介し気密に接合された透明ガラ
スなどで成形して製作されたレンズや保護カバーなどか
らなる制光体で、この反射鏡96および制光体99が形
成する空間内には、不活性ガスや窒素が封入されてい
る。なお、この前面の制光体99は必須のものではな
い。 そして、外管4の封止部41から導出している外
部リード53a,53bは、配線基板91aに接続され
ている。また、基体90と下部カバー体92とは両者の
周縁部が接着剤や段部の嵌合により一体化され高圧放電
ランプL4が構成されている。Further, 99 is a light control body composed of a lens, a protective cover and the like, which is manufactured by molding transparent glass which is airtightly bonded to the opening of the reflecting mirror 96 through a low melting point frit glass 99a. The space formed by the mirror 96 and the light control unit 99 is filled with an inert gas or nitrogen. The light control body 99 on the front side is not essential. The external leads 53a and 53b extending from the sealing portion 41 of the outer tube 4 are connected to the wiring board 91a. Further, the base body 90 and the lower cover body 92 are integrated at their peripheral portions by an adhesive or a step fitting to form a high pressure discharge lamp L4.
【0106】この実施の形態のランプL4は、放電ラン
プL3と点灯回路手段91とが一体に配設され、口金5
0部を電球用のソケットに装着して通電すれば、点灯で
きる照明装置を兼ねた電球形高圧放電ランプである。In the lamp L4 of this embodiment, the discharge lamp L3 and the lighting circuit means 91 are integrally provided, and the base 5
This is a bulb-type high-pressure discharge lamp that doubles as a lighting device that can be turned on by mounting part 0 in a bulb socket and energizing it.
【0107】そして、この放電ランプL4も発光管1と
給電線52bを係止するブリッジ部材6Bを外管4の頂
部側に設けてあるので、外管4全長の短縮がはかれると
ともに封止作業時のブリッジ部材の破損を防止して生産
性を向上することができる。Since the discharge lamp L4 is also provided with the bridge member 6B for locking the arc tube 1 and the power supply line 52b on the top side of the outer tube 4, the total length of the outer tube 4 can be shortened and the sealing work can be performed. It is possible to prevent damage to the bridge member and improve productivity.
【0108】なお、本発明は上記実施の形態に限定され
るものではない。たとえばブリッジ部材は、図3(a)
に示す構成のセラミックス製のものに限らず石英ガラス
などのガラス製で、図3(b)〜(i)に示すような構
成であってもよい。The present invention is not limited to the above embodiment. For example, the bridge member is shown in FIG.
The structure shown in FIG. 3B is not limited to the ceramic structure shown in FIG. 3 and may be made of glass such as quartz glass.
【0109】すなわち、図3(b)のブリッジ部材6B
は、本体6に発光管1の小径筒状部12aまたは導入導
体23aが挿通される透孔61が1っで、本体6の両側
に給電線52a,52bと溶接などの手段で接続される
モリブデン線63,63などが植設されている。That is, the bridge member 6B of FIG. 3 (b)
Is a single through hole 61 through which the small-diameter cylindrical portion 12a of the arc tube 1 or the introduction conductor 23a is inserted in the main body 6, and molybdenum which is connected to the power supply lines 52a and 52b on both sides of the main body 6 by means such as welding. Lines 63, 63, etc. are planted.
【0110】また、図3(c)のブリッジ部材6Cは、
本体6に発光管1の小径筒状部12aまたは導入導体2
3aが挿通される透孔61と1本の給電線52bが挿通
される透孔62とが設けられ、本体6の一端側に給電線
52aと溶接などの手段で接続されるモリブデン線63
などが植設されている。The bridge member 6C shown in FIG. 3 (c) is
The main body 6 has a small-diameter cylindrical portion 12a of the arc tube 1 or the introduction conductor 2
A through hole 61 through which 3a is inserted and a through hole 62 through which one power supply line 52b is inserted are provided, and a molybdenum wire 63 connected to the power supply line 52a at one end of the main body 6 by means such as welding.
Have been planted.
【0111】また、図3(d)のブリッジ部材6Dは、
本体6に給電線52bが挿通される透孔62が設けら
れ、本体6の一端側に導入導体23aと給電線52aと
に溶接などの手段で接続されるモリブデン線63などが
植設されている。この場合は、導入導体23aと給電線
52aとが同電位であるので1本を共用できる。Further, the bridge member 6D shown in FIG.
The main body 6 is provided with a through hole 62 through which the power supply line 52b is inserted, and a molybdenum wire 63 or the like that is connected to the introduction conductor 23a and the power supply line 52a by means such as welding is planted at one end of the main body 6. . In this case, since the introduction conductor 23a and the power supply line 52a have the same potential, one wire can be shared.
【0112】また、図3(e)のブリッジ部材6Eは、
部品点数が多くなるが導入導体23aと接続するモリブ
デン線63の両側にセラミックス製やガラス製のビード
64,64が植設され、さらに各ビード64,64の反
対面側にモリブデン線63が接続されている。Further, the bridge member 6E of FIG.
Although the number of parts is large, beads 64, 64 made of ceramics or glass are planted on both sides of the molybdenum wire 63 connected to the introduction conductor 23a, and the molybdenum wire 63 is connected on the opposite surface side of each bead 64, 64. ing.
【0113】また、図3(f)のブリッジ部材6Fは、
発光管1の小径筒状部12aまたは導入導体23aと両
側の給電線52a,52bとを挟むように両面側から軟
化した石英ガラス棒65,65を押圧することにより形
成したもので、溶着されたガラス棒65,65の間に小
径筒状部12aまたは導入導体23aと両側の給電線5
2a,52bとが介在したブリッジ部材6Fが得られ
る。Further, the bridge member 6F of FIG. 3 (f) is
It was formed by pressing softened quartz glass rods 65, 65 from both sides so as to sandwich the small-diameter cylindrical portion 12a or the introduction conductor 23a of the arc tube 1 and the power supply lines 52a, 52b on both sides, and they were welded. Between the glass rods 65, 65, the small-diameter cylindrical portion 12a or the introduction conductor 23a and the power supply line 5 on both sides are provided.
A bridge member 6F with the interposition of 2a and 52b is obtained.
【0114】また、図3(g)のブリッジ部材6Gは、
一方の給電線52aを折り曲げて導入導体23aと溶接
などの手段で電気的に接続しその先端を他方の給電線5
2bの先端とセラミックス製やガラス製のビード64を
介し電気的に絶縁した状態で接続して一体化したブリッ
ジ構造としてある。The bridge member 6G shown in FIG. 3 (g) is
One power supply line 52a is bent and electrically connected to the introduction conductor 23a by means such as welding, and its tip is connected to the other power supply line 5a.
A bridge structure is integrally formed by connecting the tip of 2b with a bead 64 made of ceramics or glass in an electrically insulated state.
【0115】さらにまた、図3(h)のブリッジ部材6
Hは、両方の給電線52a,52bの先端を小径筒状部
12aまたは導入導体23aを避けるように折り曲げ、
この両先端間をセラミックス製やガラス製のほぼ直状の
本体6で継いだ、この部分では両給電線52a,52b
を電気的に絶縁して係止したブリッジ構造としてある。Furthermore, the bridge member 6 shown in FIG.
H is bent at the tips of both the power supply lines 52a and 52b so as to avoid the small-diameter cylindrical portion 12a or the introduction conductor 23a,
The both ends are connected by a substantially straight body 6 made of ceramics or glass. In this portion, both power supply lines 52a and 52b are connected.
Is a bridge structure in which is electrically insulated and locked.
【0116】さらに、図3(i)のブリッジ部材6J
は、両方の給電線52a,52bの折り曲げた先端間を
セラミックス製やガラス製の山形の本体6で継ぐととも
に一方の給電線52aと導入導体23aとを導電線54
aを介し電気的に接続したブリッジ構造としてある。Furthermore, the bridge member 6J of FIG.
Connects the bent ends of both the power supply lines 52a and 52b with a ceramic or glass chevron-shaped main body 6 and connects one of the power supply lines 52a and the introduction conductor 23a to the conductive line 54.
The bridge structure is electrically connected through a.
【0117】そして、これらのブリッジ部材6B〜6J
も、上述したブリッジ部材6Aと同様な作用効果が得ら
れる。Then, these bridge members 6B to 6J
Also, the same effects as those of the bridge member 6A described above can be obtained.
【0118】また、これらのブリッジ部材6A〜6Jに
おいて、本体6と小径筒状部12aや導入導体23aと
給電線52a,52bとを固定する手段としては、セラ
ミックスのコンパウンドを用いるほか、導電線などを利
用して横断方向に線材を溶接してストッパとするなどの
ことができる。また、絶縁性材料からなる本体6に形成
する小径筒状部12a,12bや導入導体23a、給電
線52a,52bを係止は、貫通した透孔61,62に
限らず、溝状などであっても差支えない。Further, in these bridge members 6A to 6J, as a means for fixing the main body 6, the small-diameter cylindrical portion 12a, the introducing conductor 23a, and the power supply lines 52a and 52b, a ceramic compound is used as well as a conductive line or the like. It is possible to weld a wire rod in the transverse direction to use it as a stopper. Further, the locking of the small-diameter cylindrical portions 12a and 12b, the introduction conductor 23a, and the power supply lines 52a and 52b formed on the body 6 made of an insulating material is not limited to the through holes 61 and 62 penetrating therethrough, but may be a groove shape or the like. It doesn't matter.
【0119】[0119]
【発明の効果】本発明の請求項1および2に記載の構成
によれば、ブリッジ部材の配設箇所を外管内の封止部か
ら離間する位置に移すことにより、ブリッジ部材の破損
が防止でき歩留りの向上がはかれるとともに発光管の耐
衝撃性や耐振動性の強度低下を招くことなく、ランプの
全長短縮がはかれ小形化した高圧放電ランプを提供でき
る。According to the first and second aspects of the present invention, the bridge member can be prevented from being damaged by moving the location of the bridge member away from the sealing portion in the outer tube. It is possible to provide a miniaturized high-pressure discharge lamp in which the total length of the lamp is shortened without reducing the impact resistance and vibration resistance of the arc tube while improving the yield.
【0120】したがって、たとえばハロゲン電球の代替
用光源として、既存の反射鏡を備えた電球用の照明装置
に装着して光中心を合わせることができ、所定の配光分
布特性と電球の場合より高い発光効率が得られる。Therefore, for example, as an alternative light source for a halogen bulb, it can be attached to an existing lighting device for a bulb equipped with a reflecting mirror so that the light center can be aligned, and a predetermined light distribution distribution characteristic and a higher light distribution characteristic can be obtained. Luminous efficiency can be obtained.
【0121】本発明の請求項3に記載の構成によれば、
ブリッジ部材が、発光管の小径筒状部分に係止されるこ
とにより、上記請求項1に記載と同様な効果を奏する。According to the configuration of claim 3 of the present invention,
Since the bridge member is locked to the small-diameter tubular portion of the arc tube, the same effect as that described in claim 1 can be obtained.
【0122】本発明の請求項4に記載の構成によれば、
ブリッジ部材が、発光管の導入導体部分に係止されるこ
とにより、上記請求項1に記載と同様な効果を奏する。According to the configuration of claim 4 of the present invention,
Since the bridge member is locked to the introduction conductor portion of the arc tube, the same effect as described in the above-mentioned claim 1 can be obtained.
【0123】本発明の請求項5に記載の構成によれば、
ブリッジ部材が、発光管や給電線を確実に係止すること
により、上記請求項1に記載と同様な効果を奏する。According to the configuration of claim 5 of the present invention,
Since the bridge member securely locks the arc tube and the power supply line, the same effect as that of the above-described claim 1 is achieved.
【0124】本発明の請求項6に記載の構成によれば、
上記請求項1〜3に記載の効果を奏する高圧放電ランプ
を高周波で点灯する始動性が向上した電球形高圧放電ラ
ンプなどの照明装置を提供することができる。According to the configuration of claim 6 of the present invention,
It is possible to provide a lighting device such as a bulb-type high-pressure discharge lamp having improved startability for lighting the high-pressure discharge lamp having the effects described in claims 1 to 3 at a high frequency.
【図1】本発明の高圧放電ランプの第1の実施形態を示
す一部断面正面図である。FIG. 1 is a partial cross-sectional front view showing a first embodiment of a high pressure discharge lamp of the present invention.
【図2】図1の要部の拡大断面正面図である。FIG. 2 is an enlarged sectional front view of a main part of FIG.
【図3】図(a)〜(i)はブリッジ部材の各種実施の
形態を示す説明図である。3A to 3I are explanatory views showing various embodiments of a bridge member.
【図4】本発明の高圧放電ランプの第2の実施の形態を
示す一部断面正面図である。FIG. 4 is a partial sectional front view showing a second embodiment of the high pressure discharge lamp of the present invention.
【図5】本発明の照明装置の第1の実施の形態としての
スポットライトを示す一部中央断面側面図である。FIG. 5 is a partial central cross-sectional side view showing a spotlight as a first embodiment of an illumination device of the present invention.
【図6】本発明の高圧放電ランプの第3の実施の形態お
よび本発明の照明装置の第2の実施の形態としての電球
形高圧放電ランプを示す要部断面正面図である。FIG. 6 is a cross-sectional front view of essential parts showing a bulb-type high-pressure discharge lamp as a third embodiment of the high-pressure discharge lamp of the present invention and a second embodiment of the lighting device of the present invention.
L1,L2,L4:高圧放電ランプ L3:照明装置(電球形高圧放電ランプ) 8:照明装置(スポットライト) 1A:発光管 1:透光性セラミックス放電容器 11:膨出部 12a,12b:小径筒状部 2A,2B:電極 23a,23b:導入導体 3:放電媒体 4:発光管 41:封止部 5A,5B:給電部材 52a,52b:給電線 6A〜6J:ブリッジ部材 7a,7b:金属製コイル 80:照明装置本体(スポットライト本体) L1, L2, L4: High pressure discharge lamp L3: Lighting device (bulb-shaped high-pressure discharge lamp) 8: Lighting device (spotlight) 1A: arc tube 1: Translucent ceramics discharge vessel 11: bulge 12a, 12b: small-diameter tubular portion 2A, 2B: electrodes 23a, 23b: Introduction conductor 3: Discharge medium 4: Arc tube 41: Sealing part 5A, 5B: Power supply member 52a, 52b: feeder line 6A to 6J: Bridge member 7a, 7b: Metal coil 80: Lighting device body (spotlight body)
───────────────────────────────────────────────────── フロントページの続き (72)発明者 本田 久司 東京都品川区東品川四丁目3番1号 東芝 ライテック株式会社内 Fターム(参考) 3K014 AA01 EA00 3K042 AA01 AC06 5C043 AA12 AA17 CC03 CD05 CD12 DD21 EA09 ─────────────────────────────────────────────────── ─── Continued front page (72) Inventor Kuji Honda 4-3-1, Higashishinagawa, Shinagawa-ku, Tokyo Toshiba Inside Litec Co., Ltd. F-term (reference) 3K014 AA01 EA00 3K042 AA01 AC06 5C043 AA12 AA17 CC03 CD05 CD12 DD21 EA09
Claims (6)
して設けられた膨出部より内径が小さい一対の小径筒状
部を有する透光性セラミックス放電容器と、この放電容
器の各小径筒状部内に気密封止された導入導体およびこ
の導入導体に接続され小径筒状部内に延在しているとと
もに膨出部内に先端を臨ませた一対の電極と、この放電
容器内に封入された放電媒体とからなる発光管と;内部
にこの発光管を管軸に沿って配設するとともに気密閉塞
された外管と;この外管の一端部に封止され、上記発光
管の導入導体に電気的に接続するとともに発光管を保持
した一対の給電部材と;上記外管内にある発光管の少な
くとも一方の小径筒状部が位置する部位において、この
小径筒状部と給電部材または相互の給電部材間を係止し
たブリッジ部材と;を具備していることを特徴とする高
圧放電ランプ。1. A translucent ceramics discharge vessel having a pair of small-diameter cylindrical portions having an inner diameter smaller than that of the bulging portion, which is provided in communication with both ends of the bulging portion forming a discharge space, and each of the discharge vessels. An introduction conductor hermetically sealed in the small-diameter tubular portion, a pair of electrodes connected to the introduction conductor, extending in the small-diameter tubular portion, and having their tips facing the bulging portion, and enclosed in the discharge vessel. An arc tube made of a discharged discharge medium; an outer tube in which the arc tube is disposed along the tube axis and airtightly closed; an outer tube sealed at one end of the outer tube to introduce the arc tube. A pair of power supply members electrically connected to the conductor and holding the light emitting tube; at a portion of the outer tube in which at least one small diameter cylindrical portion of the light emitting tube is located, the small diameter cylindrical portion and the power supply member or the mutual A bridge member that locks between the power feeding members of A high-pressure discharge lamp characterized by being equipped.
して設けられた膨出部より内径が小さい一対の小径筒状
部を有する透光性セラミックス放電容器と、この放電容
器の各小径筒状部内に気密封止された導入導体およびこ
の導入導体に接続され小径筒状部内に延在しているとと
もに膨出部内に先端を臨ませた一対の電極と、この放電
容器内に封入された放電媒体とからなる発光管と;内部
にこの発光管を管軸に沿って配設するとともに気密閉塞
された外管と;この外管の一端部に封止され、上記発光
管の導入導体に電気的に接続するとともに発光管を保持
した一対の給電部材と;上記外管内の他端部側において
発光管の小径筒状部から延在する導電導体と給電部材ま
たは相互の給電部材間を係止したブリッジ部材と;を具
備していることを特徴とする高圧放電ランプ。2. A translucent ceramics discharge vessel having a pair of small-diameter cylindrical portions having an inner diameter smaller than that of the bulging portion, which is provided in communication with both ends of the bulging portion forming the discharge space, and each of the discharge vessels. An introduction conductor hermetically sealed in the small-diameter tubular portion, a pair of electrodes connected to the introduction conductor, extending in the small-diameter tubular portion, and having their tips facing the bulging portion, and enclosed in the discharge vessel. An arc tube made of a discharged discharge medium; an outer tube in which the arc tube is disposed along the tube axis and airtightly closed; an outer tube sealed at one end of the outer tube to introduce the arc tube. A pair of power supply members electrically connected to the conductor and holding the arc tube; a conductive conductor extending from the small-diameter tubular portion of the arc tube on the other end side in the outer tube and between the power supply members or the mutual power supply members And a bridge member locking the High-pressure discharge lamp.
係止されていることを特徴とする請求項1または2に記
載の高圧放電ランプ。3. The high pressure discharge lamp according to claim 1, wherein the bridge member is locked to a small-diameter tubular portion of the arc tube.
ら導出した導入導体に係止されていることを特徴とする
請求項1または2に記載の高圧放電ランプ。4. The high pressure discharge lamp according to claim 1, wherein the bridge member is locked to an introduction conductor led out from a small-diameter tubular portion of the arc tube.
または導電部材を囲繞または当接して係止することを特
徴とする請求項1ないし4のいずれか一に記載の高圧放
電ランプ。5. The high pressure discharge lamp according to claim 1, wherein the bridge member surrounds or abuts the small-diameter cylindrical portion, the introduction conductor or the conductive member to lock the same.
けられた請求項1ないし5のいずれか一に記載の高圧放
電ランプと;インバータを主体として構成されて高圧放
電ランプを高周波点灯する点灯回路手段と;を具備して
いることを特徴とする照明装置。6. A lighting device main body; a high-pressure discharge lamp according to any one of claims 1 to 5, which is provided in the lighting device main body; A lighting device comprising: circuit means;
Priority Applications (1)
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JP2001264300A JP2003077418A (en) | 2001-08-31 | 2001-08-31 | High pressure discharge lamp and lighting apparatus |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
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JP2001264300A JP2003077418A (en) | 2001-08-31 | 2001-08-31 | High pressure discharge lamp and lighting apparatus |
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JP2003077418A true JP2003077418A (en) | 2003-03-14 |
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Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2007323941A (en) * | 2006-05-31 | 2007-12-13 | Matsushita Electric Ind Co Ltd | Metal vapor discharge lamp and lighting system |
WO2012063205A2 (en) * | 2010-11-10 | 2012-05-18 | Koninklijke Philips Electronics N.V. | Thorium-free quartz metal halide lamps |
-
2001
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Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
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JP2007323941A (en) * | 2006-05-31 | 2007-12-13 | Matsushita Electric Ind Co Ltd | Metal vapor discharge lamp and lighting system |
JP4569928B2 (en) * | 2006-05-31 | 2010-10-27 | パナソニック株式会社 | Metal vapor discharge lamp and lighting device |
WO2012063205A2 (en) * | 2010-11-10 | 2012-05-18 | Koninklijke Philips Electronics N.V. | Thorium-free quartz metal halide lamps |
WO2012063205A3 (en) * | 2010-11-10 | 2012-07-26 | Koninklijke Philips Electronics N.V. | Thorium-free metal halide lamps |
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