JPH0684504A - Discharge lamp with built-in starting auxiliary device - Google Patents

Abstract

PURPOSE:To enhance reliability of a discharge lamp by connecting a starting auxiliary switch comprising a resistor and a heat reactive switch in parallel to a luminous tube, housing them in a single outer tube, and connecting a conductor proximate to the luminous tube to an electrode via a discharge gap. CONSTITUTION:Upon application of a power source, an electric current flows in a resistor 5, bimetallic switch 6 and filament 7. Then, the filament 7 is red heated and the switch is opened by radiation heat. At this instant, a high frequency pulse of a wave height value 3-4kV is generated because of energy accumulated in an inductive ballast 9 and applied to both electrodes of the luminous tube. The pulse is transmitted through a gap 4 to a proximate conductor 3. Fine discharge is started between an electrode 2' and the proximate conductor 3 and is extended to discharge between both the electrodes. Since application between both the electrodes after starting is only 50Hz, 200V or smaller, voltage is not transmitted to the conductor 3 via the gap 3, an insulation state is generated and an electric field from the inside of the luminous tube toward the outside proximity conductor 3 is not present. Since the proximity conductor 3 and an auxiliary electrode are immediately brought into an insulation state by a lamp start, service life reliability is high and assembling hours are reduced.

Description

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

【０００１】[0001]

【産業上の利用分野】本発明は一般照明に使用されてい
る起動補助装置を内蔵し水銀ランプ用安定器で点灯可能
な高圧ナトリウムランプやメタルハライドランプの改良
に関わるものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement of a high pressure sodium lamp or a metal halide lamp which has a start-up assisting device used for general lighting and can be lit by a ballast for a mercury lamp.

【０００２】[0002]

【従来の技術】普及率の高い高圧水銀ランプ用安定器で
高圧ナトリウムランプやメタルハライドランプを使用可
能にするため、電流を制限するための抵抗体と熱応動ス
イッチ等からなる起動補助回路が発光管と共に一つの外
管に内蔵される。これらは低始動電圧形と呼ばれてい
る。2. Description of the Related Art In order to enable the use of high-pressure sodium lamps and metal halide lamps in ballasts for high-pressure mercury lamps, which have a high penetration rate, a start-up auxiliary circuit consisting of a resistor for limiting current and a heat-responsive switch is provided in the arc tube Together with it is built into one outer tube. These are called low starting voltage types.

【０００３】例えば高圧ナトリウムランプでは特開昭５
３−１３４７５に記載のように抵抗体とバイメタルスイ
ッチとタングステンフィラメントとを直列に接続してな
る起動補助回路を発光管と並列に接続し、同一外管に内
蔵している。この回路によりパルスを発光管に印加し起
動を容易にする。更に、実開昭５２−１３０４８４に記
載のように放電路に沿って発光管外壁に金属線等の導電
体を密着させ、この導電体はバイメタルスイッチを介し
てどちらか一方の電極に接続されている。この導電体は
近接導体と呼ばれている。ランプ起動時、先ず近接導体
と近接導体が接続された電極に対向する電極との間に放
電が起こり、これが放電路に沿って進展して電極間の放
電に至る。即ち近接導体もまたランプの起動を容易にす
るための補助手段である。ところで近接導体はランプ点
灯中発光管の熱でバイメタルスイッチが開き、接続され
た電極とは電気的に絶縁される。点灯中も電極と接続さ
れていると、近接導体が負の半サイクル時、発光管の内
から外に向かう電界が生じる。その結果、発光管内に封
入されているナトリウムイオンが発光管容器である多結
晶アルミナ磁器中を電界方向に移動し外に漏れ出てしま
い、発光管としての機能を果たせなくなる。また特開昭
５５−６７２４のようにバイメタルを使って点灯中は近
接導体を発光管から空間的に離す方法もとられている。For example, in a high pressure sodium lamp, Japanese Patent Laid-Open No.
As described in JP-A-3-13475, a starting auxiliary circuit formed by connecting a resistor, a bimetal switch, and a tungsten filament in series is connected in parallel with the arc tube and built in the same outer tube. This circuit applies a pulse to the arc tube to facilitate activation. Further, as described in Japanese Utility Model Application Laid-Open No. 52-130484, a conductor such as a metal wire is adhered to the outer wall of the arc tube along the discharge path, and this conductor is connected to either one of the electrodes via a bimetal switch. There is. This conductor is called a proximity conductor. When the lamp is activated, first, a discharge occurs between the adjacent conductor and the electrode facing the electrode to which the adjacent conductor is connected, and this discharge progresses along the discharge path to reach the discharge between the electrodes. That is, the proximity conductor is also an auxiliary means to facilitate starting the lamp. By the way, the proximity conductor is electrically insulated from the connected electrode by opening the bimetal switch by the heat of the arc tube while the lamp is lit. If the proximity conductor is connected to the electrode during lighting, an electric field is generated from the inside of the arc tube to the outside during the negative half cycle of the proximity conductor. As a result, the sodium ions enclosed in the arc tube move in the electric field direction in the polycrystalline alumina porcelain, which is the arc tube container, and leak out to the outside, failing to function as the arc tube. Further, as disclosed in Japanese Patent Laid-Open No. 55-6724, there is a method of using a bimetal to spatially separate the proximity conductor from the arc tube during lighting.

【０００４】一方、メタルハライドランプでは特開昭５
２−１０１８７６に記載のように抵抗体とグロースター
タとバイメタルスイッチを直列に接続して起動補助回路
を構成し、この回路を発光管に並列に接続して同一外管
に収納する。更に、発光管内の電極に近接して補助電極
が設けられ、数十ｋΩの抵抗を介して近接電極と対向す
る電極に接続されている。起動時、まず補助電極とこれ
に近接する主電極との間に微放電が起こり、次いで両主
電極間の放電に至る。メタルハライドランプの場合でも
補助電極は点灯中バイメタルスイッチを使って電気的に
きりはなされる。補助電極と近接主電極間をバイメタル
スイッチで短絡する方法もとられる。このようにしない
と、補助電極と近接主電極間に直流電界が生じ、封入物
のナトリウムハロゲン化物と発光管容器の石英が電極封
止部で反応し破損する。On the other hand, a metal halide lamp is disclosed in Japanese Patent Laid-Open No.
As described in 2-1018176, a resistor, a glow starter, and a bimetal switch are connected in series to form a starting auxiliary circuit, and this circuit is connected in parallel to the arc tube and housed in the same outer tube. Further, an auxiliary electrode is provided in the vicinity of the electrode inside the arc tube, and is connected to the electrode facing the adjacent electrode via a resistance of several tens kΩ. At the time of start-up, first, a slight discharge occurs between the auxiliary electrode and the main electrode adjacent thereto, and then discharge between both main electrodes is reached. Even in the case of a metal halide lamp, the auxiliary electrode is electrically cut off by using a bimetal switch during lighting. Another method is to short the auxiliary electrode and the adjacent main electrode with a bimetal switch. If this is not done, a direct current electric field is generated between the auxiliary electrode and the adjacent main electrode, and the sodium halide of the enclosure and the quartz of the arc tube container react and break at the electrode sealing part.

【０００５】以上述べた通り高圧ナトリウムランプにお
ける近接導体、メタルハライドランプにおける補助電極
はランプ起動後上記のような方法でナトリウムの漏出や
発光管容器の破損を防止しているが、いずれもバイメタ
ルが使われている。As described above, the proximity conductor in the high-pressure sodium lamp and the auxiliary electrode in the metal halide lamp prevent the leakage of sodium and the damage of the arc tube container by the above-mentioned method after the lamp is started. It is being appreciated.

【０００６】[0006]

【発明が解決しようとする課題】上記のように近接導体
や補助電極は常温において閉じたバイメタルスイッチを
使用している。その為常温においてバイメタル板には適
当な曲げの力が加わった状態にしておかなければならな
い。例えばバイメタルスイッチの接点の圧力が弱いと周
囲温度が高くなった場合にスイッチが開いてしまった
り、ランプの再始動に時間がかかる。特開昭５５−６７
２４のようにスイッチでなく近接導体を発光管から空間
的に離す場合も、バイメタル板は常温において適当に撓
ませた状態に設定される。As described above, the proximity conductor and the auxiliary electrode use the bimetal switch which is closed at room temperature. For this reason, the bimetal plate must be kept at an appropriate bending force at room temperature. For example, if the contact pressure of the bimetal switch is weak, the switch will open when the ambient temperature rises, and it will take time to restart the lamp. JP-A-55-67
Even when the proximity conductor, not the switch, is spatially separated from the arc tube as in 24, the bimetal plate is set to be appropriately bent at room temperature.

【０００７】一方、接点圧が強すぎると周囲温度が低く
なった場合にランプが消灯状態に置かれると温度に反比
例して接点圧が強くなりバイメタル板が永久変形してし
まいスイッチの機能を果たさなくなる場合がある。従っ
てランプの組立時、バイメタル板の曲げの程度を精度よ
く調整する必要があり、組立上の大きな難点になってい
た。On the other hand, when the contact pressure is too strong and the ambient temperature becomes low, when the lamp is put in the off state, the contact pressure becomes inversely proportional to the temperature and the bimetal plate is permanently deformed, thereby failing to function as a switch. It may disappear. Therefore, when assembling the lamp, it is necessary to accurately adjust the degree of bending of the bimetal plate, which is a great difficulty in assembling.

【０００８】また、バイメタルは点灯してから発光管か
らの熱で変形するので応答速度が遅い。バイメタル板が
変形するまでは発光管の内部から近接導体に向かう電界
が存在し、この間はナトリウムイオンの発光管外への移
動を防げなかった。Further, since the bimetal is deformed by the heat from the arc tube after lighting, the response speed is slow. There was an electric field from the inside of the arc tube to the adjacent conductor until the bimetal plate was deformed, and during this time, it was not possible to prevent the movement of sodium ions out of the arc tube.

【０００９】本発明が解決しようとしているのは上記欠
点に鑑み、組立が簡単で、ランプが起動したら近接導体
を速やかに切り離してナトリウムの消失を極力少なくす
ることである。In view of the above-mentioned drawbacks, the present invention is to solve the above problems in that the assembling is simple, and when the lamp is started, the adjacent conductors are quickly disconnected to minimize the loss of sodium.

【００１０】[0010]

【課題を解決するための手段】上記課題を解決する手段
はバイメタルスイッチに代わって放電間隙を使用する方
法である。放電間隙とは微小な間隙を置いて電極を対向
させたものである。The means for solving the above problems is to use a discharge gap instead of a bimetal switch. The discharge gap refers to electrodes facing each other with a minute gap.

【００１１】[0011]

【作用】図１により説明する。電源電圧が投入されると
炭素皮膜抵抗５、常温で閉じているバイメタルスイッチ
６、タングステンフィラメント７からなるスタータ回路
に電流が流れる。タングステンフィラメントが赤熱しバ
イメタル板を加熱する結果バイメタルスイッチ６が開
く。その瞬間、誘導性安定器９に蓄えられたエネルギー
により図４に示す波形のパルスがスイッチの接点間に発
生する。パルスの周波数は１０ｋＨｚ〜数１００ｋＨ
ｚ、波高値は３〜４ｋＶである。このパルスは５０Ｈｚ
または６０Ｈｚの電源電圧に重畳して発光管１の両電極
２，２´間に印加される。同時に高周波であるパルス成
分のみは放電間隙を電磁波の形で近接導体３に伝わる。
低周波で電圧も低い電源電圧成分は近接導体に伝わらな
い。近接導体は放電間隙を介して一方の電極に接続され
ているので両電極間に高周波パルスが印加されると、高
周波パルスのみは放電間隙を伝わり近接導体をパルスの
電位にする。この時近接導体と対向電極の間に微小放電
が発生し両電極間の放電に至る。一方、５０Ｈｚまたは
６０Ｈｚの電源電圧は放電間隙を伝わらないのでスイッ
チが開いたのと等価になる。即ち、ランプが点灯しパル
スが発生しなくなると近接導体は電気的に絶縁状態とな
るので、放電間隙は電界の存在によるナトリウムの消失
を防止する機能を果たす。The operation will be described with reference to FIG. When the power supply voltage is turned on, a current flows through the starter circuit including the carbon film resistor 5, the bimetal switch 6 closed at room temperature, and the tungsten filament 7. As a result of the tungsten filament heating red and heating the bimetal plate, the bimetal switch 6 opens. At that moment, the energy stored in the inductive ballast 9 causes a pulse of the waveform shown in FIG. 4 to occur between the contacts of the switch. The pulse frequency is 10 kHz to several 100 kHz
z, the peak value is 3 to 4 kV. This pulse is 50Hz
Alternatively, the voltage is superimposed on the power supply voltage of 60 Hz and applied between the electrodes 2 and 2'of the arc tube 1. At the same time, only the high-frequency pulse component is transmitted to the adjacent conductor 3 through the discharge gap in the form of electromagnetic waves.
The power supply voltage component of low frequency and low voltage is not transmitted to the adjacent conductor. Since the proximity conductor is connected to one electrode through the discharge gap, when a high frequency pulse is applied between both electrodes, only the high frequency pulse propagates through the discharge gap and sets the proximity conductor at a pulse potential. At this time, a minute discharge is generated between the adjacent conductor and the counter electrode, resulting in discharge between both electrodes. On the other hand, the power supply voltage of 50 Hz or 60 Hz does not propagate through the discharge gap and is equivalent to the switch being opened. That is, when the lamp is turned on and no pulse is generated, the adjacent conductor is electrically insulated, so that the discharge gap serves to prevent the disappearance of sodium due to the presence of the electric field.

【００１２】[0012]

【実施例】以下、本発明の実施例について図面を参照し
て説明する。Embodiments of the present invention will be described below with reference to the drawings.

【００１３】〈実施例１〉図１は本発明を高圧ナトリウ
ムランプに適用した例である。同図において１は内径８
ｍｍ，長さ約１００ｍｍの管状セラミック製容器にナト
リウム、水銀、キセノンガスを封入した３６０Ｗ高圧ナ
トリウムランプ発光管である。両端には電極２，２´が
設けられている。発光管１の外壁に密着して細いニオブ
線を巻きつけ近接導体３とした。近接導体３の一端は放
電間隙４を介して発光管の一方の電極２に接続し、他端
は対向電極２´の近傍まで巻回しているがいずれにも接
続はされていない。Example 1 FIG. 1 shows an example in which the present invention is applied to a high pressure sodium lamp. In the figure, 1 is the inner diameter 8
This is a 360 W high-pressure sodium lamp arc tube in which a sodium, mercury, and xenon gas is sealed in a tubular ceramic container having a size of 100 mm and a length of about 100 mm. Electrodes 2 and 2'are provided at both ends. A thin niobium wire was wound around the outer wall of the arc tube 1 to form a proximity conductor 3. One end of the proximity conductor 3 is connected to one electrode 2 of the arc tube through the discharge gap 4, and the other end is wound to the vicinity of the counter electrode 2 ', but is not connected to any of them.

【００１４】放電間隙４の構造は図２に示した通りであ
る。コバールガラス１２にコバール金属線１１，１１´
を封止し、近接導体３をコバール線１１，１１´に溶接
した後、１１，１１´の間にある近接導体３の一部を切
断して0.5〜1.0mmの間隙を作る。即ち、コバール線１１
は近接導体３に接続し、コバール線１１´は支持金具１
３に溶接により接続した。この支持金具１３はリード線
の機能も果たし、電極２および電源に接続されている。
従って近接導体３はコバール線１１，１１´の間の放電
間隙４を介して発光管の一方の電極２に接続されてい
る。The structure of the discharge gap 4 is as shown in FIG. Kovar metal wire 11, 11 'on Kovar glass 12
Is sealed and the proximity conductor 3 is welded to the Kovar wires 11 and 11 ', and then a part of the proximity conductor 3 between 11 and 11' is cut to form a gap of 0.5 to 1.0 mm. That is, Kovar wire 11
Is connected to the adjacent conductor 3, and the Kovar wire 11 ′ is the support fitting 1
3 was connected by welding. The support metal 13 also functions as a lead wire and is connected to the electrode 2 and the power supply.
Therefore, the adjacent conductor 3 is connected to one electrode 2 of the arc tube through the discharge gap 4 between the Kovar wires 11 and 11 '.

【００１５】更に、約３００Ωの炭素皮膜抵抗器５、常
温で閉じたバイメタルスイッチ６、タングステンフィラ
メント７を直列に接続してなる起動補助回路を発光管と
並列に接続して、これらを外管ガラス８内に収納した。
外管ガラスの内部は高真空に排気した。この放電ランプ
を４００Ｗ水銀ランプ用安定器９を介して２００Ｖ，５
０Ｈｚの商用電源１０に接続して点灯する。Further, a starting auxiliary circuit formed by connecting a carbon film resistor 5 of about 300Ω, a bimetal switch 6 closed at room temperature, and a tungsten filament 7 in series is connected in parallel with the arc tube, and these are connected to the outer tube glass. Stored in 8.
The inside of the outer tube glass was evacuated to a high vacuum. This discharge lamp is operated at 200 V, 5 V through a ballast 9 for 400 W mercury lamp.
It is connected to a commercial power supply 10 of 0 Hz and lights up.

【００１６】この放電ランプの動作を説明する。電源電
圧が印加されると、まず抵抗５、バイメタルスイッチ
６、フィラメント７に電流が流れる。次いでフィラメン
ト７が赤熱し、その輻射熱でバイメタルスイッチ６が開
く。その瞬間、誘導性安定器９に蓄えられたエネルギー
により図４に示すような、波高値３〜４ｋＶの高周波パ
ルスが発生し、発光管の両電極間に印加される。高周波
パルスは放電間隙４を通じて近接導体３に伝わり、先ず
電極２´とこの電極近くの近接導体の間で微放電を開始
し、ここが起点となって発光管の両電極間の放電に至
る。即ちランプが起動した状態となる。起動後は両電極
間には５０Ｈｚ、２００Ｖ以下の電圧しかかからないの
で放電間隙４を通じて近接導体３にこの電圧が伝わるこ
とはない。即ち、近接導体３と電極２は絶縁された状態
となるので発光管内部から外部の近接導体に向かう電界
は存在しない。The operation of this discharge lamp will be described. When a power supply voltage is applied, first a current flows through the resistor 5, the bimetal switch 6, and the filament 7. Next, the filament 7 turns red, and the radiant heat opens the bimetal switch 6. At that moment, the energy stored in the inductive ballast 9 generates a high frequency pulse having a peak value of 3 to 4 kV as shown in FIG. 4, and is applied between both electrodes of the arc tube. The high frequency pulse is transmitted to the adjacent conductor 3 through the discharge gap 4, and first, a slight discharge is started between the electrode 2'and the adjacent conductor near this electrode, which serves as a starting point to reach the discharge between both electrodes of the arc tube. That is, the lamp is activated. Since only a voltage of 50 Hz and 200 V or less is applied between both electrodes after activation, this voltage is not transmitted to the adjacent conductor 3 through the discharge gap 4. That is, since the proximity conductor 3 and the electrode 2 are in an insulated state, there is no electric field from the inside of the arc tube to the outside proximity conductor.

【００１７】上記の本発明による高圧ナトリウムランプ
３６０Ｗの始動試験及び寿命試験を行ったところ両試験
とも結果は良好であった。When the high pressure sodium lamp 360W according to the present invention was subjected to a starting test and a life test, the results were good in both tests.

【００１８】〈実施例２〉図３は本発明をメタルハライ
ドランプに適用した例である。同図において１４は内径
２０ｍｍ，電極間距離が約４０ｍｍの管状石英製容器に
ナトリウムのハロゲン化物を含む金属ハロゲン化物、水
銀、希ガスを封入した４００Ｗメタルハライドランプ発
光管である。両端には電極１５，１５´が設けられてい
る。電極に近接して、発光管内に補助電極１６が設けら
れている。補助電極は両方の電極近くに設けられる場合
もある。補助電極は放電間隙４を介して隣接した電極に
対向する電極１５´に接続される。<Second Embodiment> FIG. 3 shows an example in which the present invention is applied to a metal halide lamp. In the figure, 14 is a 400 W metal halide lamp arc tube in which a metal halide containing sodium halide, mercury, and a rare gas are sealed in a tubular quartz container having an inner diameter of 20 mm and a distance between electrodes of about 40 mm. Electrodes 15 and 15 'are provided at both ends. An auxiliary electrode 16 is provided in the arc tube in the vicinity of the electrode. The auxiliary electrode may be provided near both electrodes. The auxiliary electrode is connected to the electrode 15 ′ facing the adjacent electrode via the discharge gap 4.

【００１９】放電間隙４の構造は図２に示した通りであ
るが、この場合放電間隙を形成する金属細線は直径０．
３ｍｍのモリブデン線を使用した。The structure of the discharge gap 4 is as shown in FIG. 2. In this case, the fine metal wire forming the discharge gap has a diameter of 0.
A 3 mm molybdenum wire was used.

【００２０】更に、約３００Ωの炭素皮膜抵抗器５、グ
ロースタータ１７を直列に接続してなる起動補助回路を
発光管と並列に接続して、これらを外管ガラス８内に収
納した。外管ガラスの内部は数１００Ｔｏｒｒの窒素ガ
スを封入した。この放電ランプを４００Ｗ水銀ランプ用
安定器９を介して２００Ｖ，５０Ｈｚの商用電源１０に
接続して点灯した。Further, a starting auxiliary circuit composed of a carbon film resistor 5 of about 300Ω and a glow starter 17 connected in series was connected in parallel with the arc tube and housed in the outer tube glass 8. The inside of the outer tube glass was filled with nitrogen gas of several 100 Torr. This discharge lamp was connected to a commercial power source 10 of 200 V and 50 Hz via a ballast 9 for a 400 W mercury lamp and lit.

【００２１】この放電ランプの動作を説明する。電源電
圧が印加されると、まずグロースタータ１７が動作し、
パルス幅数μｓｅｃ、波高値２〜３ｋＶの高周波パルス
が発生し、発光管の両電極間に印加される。同時に高周
波パルスは放電間隙４を通じて補助電極１６に伝わり、
先ず補助電極と、これに隣接した電極１５の間で微放電
を開始し、ここが起点となって発光管の両電極間の放電
に至る。即ちランプが起動した状態となる。起動後は両
電極間には５０Ｈｚ、２００Ｖ以下の電圧しかかからな
いので放電間隙４を通じて補助電極にこの電圧が伝わる
ことはない。即ち、補助電極と両電極は絶縁された状態
となるのでナトリウムによる石英の電気分解は起こらな
い。The operation of this discharge lamp will be described. When the power supply voltage is applied, first the glow starter 17 operates,
A high frequency pulse having a pulse width of several μsec and a peak value of 2 to 3 kV is generated and applied between both electrodes of the arc tube. At the same time, the high frequency pulse is transmitted to the auxiliary electrode 16 through the discharge gap 4,
First, a slight discharge is started between the auxiliary electrode and the electrode 15 adjacent to the auxiliary electrode, which serves as a starting point to reach a discharge between both electrodes of the arc tube. That is, the lamp is activated. After starting, only a voltage of 50 Hz and 200 V or less is applied between both electrodes, so that this voltage is not transmitted to the auxiliary electrode through the discharge gap 4. That is, since the auxiliary electrode and both electrodes are in an insulated state, electrolysis of quartz by sodium does not occur.

【００２２】上記の本発明によるメタルハライドランプ
４００Ｗの始動試験及び寿命試験を行ったところ両試験
とも結果は良好であった。When the starting test and the life test of the above metal halide lamp 400W according to the present invention were performed, the results were good in both tests.

【００２３】[0023]

【発明の効果】本発明の効果は、 （１）ランプが始動すると近接導体や補助電極は直ちに
電気的絶縁状態となるので従来のランプに比べ寿命の信
頼性がたかまる。The effects of the present invention are as follows: (1) When the lamp is started, the proximity conductor and the auxiliary electrode are immediately in an electrically insulated state, so that the reliability of the life is higher than that of the conventional lamp.

【００２４】（２）ランプの組立工程においてバイメタ
ルの接点圧調整等の複雑な作業が不要となり組立時間が
短縮される。特に、組立の自動化上の隘路が解消され
る。(2) In the lamp assembling process, complicated work such as contact pressure adjustment of the bimetal is not necessary and the assembling time is shortened. In particular, the bottleneck in automation of assembly is eliminated.

【００２５】（３）バイメタルの接点圧調整の誤りによ
る故障がなくなり、信頼性をあげることができる。(3) Failure due to incorrect contact pressure adjustment of the bimetal is eliminated, and reliability can be improved.

【００２６】等であり、経済的に、あるいは信頼性向上
の面で効果が大きい。And the like, which are highly effective in terms of economic efficiency and reliability improvement.

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

【図１】本発明の一実施例を示す回路構成図FIG. 1 is a circuit configuration diagram showing an embodiment of the present invention.

【図２】放電間隙の構造例を示す斜視図FIG. 2 is a perspective view showing a structural example of a discharge gap.

【図３】本発明の一実施例を示す回路構成図FIG. 3 is a circuit configuration diagram showing an embodiment of the present invention.

【図４】パルス電圧波形[Figure 4] Pulse voltage waveform

【符号の説明】[Explanation of symbols]

１…高圧ナトリウムランプ発光管、２,２´…電極、３
…近接導体、４…放電間隙、５…炭素皮膜抵抗、６…バ
イメタルスイッチ、７…タングステンフィラメント、８
…外管ガラス、９…誘導性安定器、１０…電源、１１，
１１´…コバール線、１２…コバールガラス、１３…支
持金具、１４…コバール線、１５，１５´…電極、１６
…補助電極、１７…グロースタータ。1 ... High pressure sodium lamp arc tube, 2, 2 '... Electrode, 3
... Proximity conductor, 4 ... Discharge gap, 5 ... Carbon film resistance, 6 ... Bimetal switch, 7 ... Tungsten filament, 8
... Outer tube glass, 9 ... Inductive ballast, 10 ... Power supply, 11,
11 '... Kovar wire, 12 ... Kovar glass, 13 ... Support metal fitting, 14 ... Kovar wire, 15, 15' ... Electrode, 16
... auxiliary electrode, 17 ... glow starter.

Claims (2)

【特許請求の範囲】[Claims] 【請求項１】少なくとも抵抗体と熱応動スイッチからな
る起動補助回路を発光管と並列に接続して同一外管に収
納し、該発光管に近接して設けられた導電体を、放電間
隙を介して電極に接続してなる起動補助装置を内蔵した
放電ランプ。1. A starting auxiliary circuit comprising at least a resistor and a heat-responsive switch is connected in parallel with an arc tube and housed in the same outer tube, and a conductor provided in the vicinity of the arc tube is provided with a discharge gap. A discharge lamp with a built-in start-up auxiliary device connected to the electrodes via 【請求項２】放電管内に、電極に近接して設けられた補
助電極を放電間隙を介して近接した電極に対向する電極
に接続した請求項１の放電ランプ。2. The discharge lamp according to claim 1, wherein an auxiliary electrode provided in the discharge tube in the vicinity of the electrode is connected to an electrode facing the electrode in the vicinity of the electrode via a discharge gap.