JP2619392B2 - Electrodeless discharge lamp lighting device - Google Patents
Electrodeless discharge lamp lighting deviceInfo
- Publication number
- JP2619392B2 JP2619392B2 JP62148458A JP14845887A JP2619392B2 JP 2619392 B2 JP2619392 B2 JP 2619392B2 JP 62148458 A JP62148458 A JP 62148458A JP 14845887 A JP14845887 A JP 14845887A JP 2619392 B2 JP2619392 B2 JP 2619392B2
- Authority
- JP
- Japan
- Prior art keywords
- discharge lamp
- electrodeless discharge
- state
- matching
- lighting
- 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.)
- Expired - Lifetime
Links
- 239000011521 glass Substances 0.000 claims description 8
- 239000007789 gas Substances 0.000 claims description 6
- 229910052751 metal Inorganic materials 0.000 claims description 6
- 239000002184 metal Substances 0.000 claims description 6
- 239000011261 inert gas Substances 0.000 claims description 5
- 230000010355 oscillation Effects 0.000 description 13
- 238000010438 heat treatment Methods 0.000 description 8
- 230000000694 effects Effects 0.000 description 6
- 238000010586 diagram Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 239000004020 conductor Substances 0.000 description 3
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 2
- 239000003990 capacitor Substances 0.000 description 2
- 230000005672 electromagnetic field Effects 0.000 description 2
- 239000010408 film Substances 0.000 description 2
- 230000000087 stabilizing effect Effects 0.000 description 2
- 230000002411 adverse Effects 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 230000020169 heat generation Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 description 1
- 229910052753 mercury Inorganic materials 0.000 description 1
- 239000002985 plastic film Substances 0.000 description 1
- 229920006255 plastic film Polymers 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
Landscapes
- Circuit Arrangements For Discharge Lamps (AREA)
Description
【発明の詳細な説明】 ［技術分野］ 本発明は、無電極放電灯に高周波電磁界を印加して発
光させる無電極放電灯点灯装置に関するものである。Description: TECHNICAL FIELD The present invention relates to an electrodeless discharge lamp lighting device that emits light by applying a high-frequency electromagnetic field to an electrodeless discharge lamp.
［背景技術］ 従来、無電極放電灯に高周波電磁界を印加して発光さ
せるこの種の無電極放電灯点灯装置は、第３図に示すよ
うに、透明なガラスバルブあるいは内面に蛍光体が塗布
されたガラスバルブ内に不活性ガス、金属蒸気などの放
電ガス（例えば、水銀および希ガス）を封入した無電極
放電灯１と、無電極放電灯１に沿って近接配置された高
周波電力給電用のコイル２と、上記コイル２に接続され
た高周波電源３とで構成され、高周波電源３からコイル
２に数〜数100MHzの高周波電流を流すことにより無電極
放電灯に高周波電力を供給して発光させるようになって
いた。第４図は無電極放電灯１にコイル２を装着した例
を示すもので、球状の無電極放電灯１に、給電用のコイ
ル２をはち巻き状に巻回して装着している。BACKGROUND ART Conventionally, an electrodeless discharge lamp lighting device of this type, which emits light by applying a high-frequency electromagnetic field to an electrodeless discharge lamp, has a phosphor coated on a transparent glass bulb or an inner surface as shown in FIG. An electrodeless discharge lamp 1 in which a discharge gas (for example, mercury and a rare gas) such as an inert gas or a metal vapor is sealed in a glass bulb, and a high-frequency power supply arranged in close proximity along the electrodeless discharge lamp 1 And a high-frequency power supply 3 connected to the coil 2. High-frequency power of several to several hundred MHz is supplied from the high-frequency power supply 3 to the coil 2 to supply high-frequency power to the electrodeless discharge lamp to emit light. Had to be done. FIG. 4 shows an example in which the coil 2 is mounted on the electrodeless discharge lamp 1, in which the power supply coil 2 is wound around the spherical electrodeless discharge lamp 1 and mounted.
第５図は棒状の無電極放電灯１の場合における、コイ
ル２の装着例を示しており、鞍型のコイル２を複数個設
け、各コイル２に高周波電源３から高周波電力をそれぞ
れ給電して棒状の無電極放電灯１を発光させるようにな
っている。FIG. 5 shows a mounting example of the coil 2 in the case of the rod-shaped electrodeless discharge lamp 1, in which a plurality of saddle-shaped coils 2 are provided, and each coil 2 is supplied with high-frequency power from the high-frequency power source 3 respectively. The rod-shaped electrodeless discharge lamp 1 emits light.
第６図は無電極放電灯１の最冷点温度TBと光出力φと
の関係を示したもので、一般の蛍光灯と同様に、無電極
放電灯１においても温度tSで最大光出力φＳが得られ、
最冷点温度TBが高くても、低くても光出力φは低下する
傾向にある。このため、周囲温度が低い場合において、
最冷点温度TBが低い状態にある点灯直後には光出力φが
少なく、最冷点温度TBが高くなるにしたがって光出力φ
が増加するという不安定な始動特性となる。このような
低温時における不安定な始動特性は、点灯直後から安定
な光出力が必要な複写機用光源、露光機用光源などに用
いる場合においては致命的な欠点となる。Figure 6 is shows a relationship between the coldest spot temperature T B and the light output φ of the electrodeless discharge lamp 1, similarly to ordinary fluorescent lamps, maximum light at a temperature t S even electrodeless discharge lamp 1 output φ S is obtained,
Even with a high coldest-spot temperature T B, the light output φ be less tends to decrease. Therefore, when the ambient temperature is low,
The light output φ is low immediately after lighting when the coldest point temperature T B is low, and the light output φ increases as the coldest point temperature T B increases.
This leads to unstable starting characteristics in which the value increases. Such unstable starting characteristics at low temperatures are fatal drawbacks when used as a light source for copiers, light sources for exposing machines, etc., which require stable light output immediately after lighting.
そこで、点灯直後から安定な光出力φを要求される上
述の機器の光源として一般的ない蛍光灯を使用する場合
において、金属薄膜をエッチングして両側を薄いプラス
チックフィルムなどで絶縁したフィルムヒータにより蛍
光灯の一部分を包み、低温時には、上記フィルタヒータ
に通電して蛍光灯を加熱する方法によって始動特性を安
定化するようにしたものがあった。しかしながら、この
加熱方式を無電極放電灯点灯装置に適用した場合には、
フィルムヒータが高周波電力供給用のコイルと電磁結合
することになるので、高周波電力ロスが増加して効率が
低下したり、高周波電源と放電灯回路との間に整合がと
れなくなって無電極放電灯が点灯できなくなるという問
題があり、さらにヒータ回路の電源ラインに高周波ノイ
ズが重畳されて悪影響があるという問題があった。Therefore, when an unusual fluorescent lamp is used as the light source of the above equipment that requires a stable light output φ immediately after lighting, the film heater that etches the metal thin film and insulates both sides with a thin plastic film etc. In some lamps, the starting characteristics are stabilized by wrapping a part of the lamp and heating the fluorescent lamp by energizing the filter heater at a low temperature. However, when this heating method is applied to an electrodeless discharge lamp lighting device,
Since the film heater is electromagnetically coupled to the coil for supplying high-frequency power, the high-frequency power loss increases and the efficiency drops, or the matching between the high-frequency power supply and the discharge lamp circuit becomes impossible, and the electrodeless discharge lamp Cannot be lit, and furthermore, there is a problem that high frequency noise is superimposed on the power supply line of the heater circuit and has an adverse effect.
一方、別の従来例として、第７図に示すような他励式
点灯装置があった。すなわち、発振回路４にて発生され
た所定周波数の高周波信号をパワーアンプで増幅し、増
幅された高周波信号を整合回路６を介してコイル２に印
加して無電極放電灯１に高周波電力を効率良く供給でき
るようにするとともに、パワーアンプ５のゲインを調整
するためのスイッチ７を設けたものであり、低温時にス
イッチ７をオンすることにより無電極放電灯１を点灯さ
せない程度にパワーアンプ５のゲインを低下させ、コイ
ル２の抵抗による電力ロスにより無電極放電灯１を加熱
するようになっている。しかしながら、このような従来
例にあっては、加熱時にパワーアンプ５のゲインを低下
させてコイル２に給電される高周波電力を小さくしてお
り、コイル２の発熱を十分に大きくすることができない
ので、加熱程度に限界があり低温時の始動特性の改善効
果が十分に得られない場合があるという問題があった。
なお、十分な加熱効果を得るために無電極放電灯１を完
全に不点灯状態にしない方法も考えられるが、不必要に
常時点灯状態（光出力が少ない点灯状態）にしておく
と、例えば、複写機用光源として使用した場合には複写
機の感光ドラムの劣化を速めるという問題があり、デイ
スプレイ用光源とした場合には調光範囲が狭なってしま
うという問題がある。On the other hand, as another conventional example, there is a separately-excited lighting device as shown in FIG. That is, a high-frequency signal of a predetermined frequency generated by the oscillation circuit 4 is amplified by the power amplifier, and the amplified high-frequency signal is applied to the coil 2 via the matching circuit 6 so that the high-frequency power is efficiently supplied to the electrodeless discharge lamp 1. A switch 7 for adjusting the gain of the power amplifier 5 is provided, and the power amplifier 5 is turned on so that the electrodeless discharge lamp 1 is not turned on by turning on the switch 7 at a low temperature. The gain is reduced, and the electrodeless discharge lamp 1 is heated by power loss due to the resistance of the coil 2. However, in such a conventional example, the high-frequency power supplied to the coil 2 is reduced by lowering the gain of the power amplifier 5 during heating, and the heat generated by the coil 2 cannot be sufficiently increased. In addition, there is a problem that the degree of heating is limited and the effect of improving the starting characteristics at low temperatures may not be sufficiently obtained.
In order to obtain a sufficient heating effect, a method of not completely turning off the electrodeless discharge lamp 1 may be considered. However, if the electrodeless discharge lamp 1 is unnecessarily turned on (lighting state with low light output), for example, When used as a light source for a copying machine, there is a problem that the deterioration of the photosensitive drum of the copying machine is accelerated, and when used as a light source for a display, there is a problem that a light control range is narrowed.
［発明の目的］ 本発明は上記の点に鑑みて為されたものであり、その
目的とするところは、低温時の始動特性を確実に安定化
することができる無電極放電灯点灯装置を提供すること
にある。[Object of the Invention] The present invention has been made in view of the above points, and an object of the present invention is to provide an electrodeless discharge lamp lighting device capable of reliably stabilizing the starting characteristics at low temperatures. Is to do.
［発明の開示］ （構 成） 本発明は、ガラスバルブ内に不活性ガス、金属蒸気な
どの放電ガスを封入した無電極放電灯と、無電極放電灯
に沿って近接配置された高周波電力給電用のコイルとか
らなる放電灯負荷回路と、上記コイルに接続された高周
波電源と、高周波電源と放電灯負荷回路との整合をとる
整合回路とを備えてなる無電極放電灯点灯装置におい
て、前記無電極放電灯を非点灯から始動、点灯状態に点
灯制御する場合に、前記整合回路を、非点灯状態と始動
状態では不整合状態に設定するとともに、点灯状態では
整合状態に設定する点灯制御手段を設けることにより、
低温時の始動特性を確実に安定化することができる無電
極放電灯点灯装置を提供するものである。[Disclosure of the Invention] (Constitution) The present invention relates to an electrodeless discharge lamp in which a discharge gas such as an inert gas or a metal vapor is sealed in a glass bulb, and a high-frequency power supply arranged in close proximity along the electrodeless discharge lamp. An electrodeless discharge lamp lighting device comprising: a discharge lamp load circuit comprising a coil for use; a high-frequency power supply connected to the coil; and a matching circuit for matching the high-frequency power supply with the discharge lamp load circuit. Lighting control means for setting the matching circuit to a mismatched state between the non-lighting state and the starting state, and setting the matching circuit to a matching state in the lighting state when the electrodeless discharge lamp is started from the non-lighting state and is controlled to be turned on to the lighting state By providing
An object of the present invention is to provide an electrodeless discharge lamp lighting device capable of reliably stabilizing the starting characteristics at low temperatures.
（実施例１） 第１図は本発明一実施例を示すもので、透明ガラスバ
ルブあるいは内面に蛍光体が塗布されたガラスバルブ内
に不活性ガス、金属蒸気などの放電ガスを封入した無電
極放電灯１と、無電極放電灯１の外周に沿って近接配置
された高周波電力給電用のコイル２とからなる放電灯負
荷回路と、コイル２に接続された高周波電源３と、高周
波電源３と放電灯負荷回路との整合をとる整合回路６と
を備えてなる従来例と同様の無電極放電灯点灯装置にお
いて、無電極放電灯１を非点灯から始動、点灯状態に点
灯制御する場合に、整合回路６を、非点灯状態と始動状
態では不整合状態に設定するとともに、点灯状態では整
合状態に設定する点灯制御手段８を設けたものである。
実施例にあっては、発振回路４の発振周波数を切り換え
る周波数切換スイッチ９と、整合回路６の整合状態を切
り換える整合切換スイッチ10とで点灯制御手段８が形成
されている。なお、発振周波数の切り換えは、周波数切
換スイッチ９にて発振回路４の水晶発振子を発振周波数
の異なるものに切り換えたり、LC共振回路の定数を切り
換えたりすることによって行なわれ、製造状態の切り換
えは、整合切換スイッチ10にて整合回路６を構成するコ
ンデンサの容量あるいはチョークコイルのタップなどを
変更することによって行なわれる。また、回路電源11
は、電源スイッチ12を介して各回路に供給されている。
さらにまた、無電極放電灯１に近接して始動回路13から
始動用高電圧が印加される近接導体14が設けられてお
り、始動が容易に行えるようにしている。Embodiment 1 FIG. 1 shows an embodiment of the present invention, in which a transparent glass bulb or a glass bulb having a phosphor coated on its inner surface is filled with a discharge gas such as an inert gas or a metal vapor to form an electrodeless electrode. A discharge lamp load circuit including a discharge lamp 1, a high-frequency power supply coil 2 disposed close to the outer periphery of the electrodeless discharge lamp 1, a high-frequency power supply 3 connected to the coil 2, and a high-frequency power supply 3. In an electrodeless discharge lamp lighting device similar to the conventional example including a matching circuit 6 for matching with a discharge lamp load circuit, when the electrodeless discharge lamp 1 is started from non-lighting and is controlled to be lit, Lighting control means 8 is provided for setting the matching circuit 6 to a mismatched state in the non-lighting state and the starting state, and to set a matching state in the lighting state.
In the embodiment, the lighting control means 8 is formed by a frequency changeover switch 9 for changing the oscillation frequency of the oscillation circuit 4 and a matching changeover switch 10 for changing the matching state of the matching circuit 6. Switching of the oscillation frequency is performed by switching the crystal oscillator of the oscillation circuit 4 to one having a different oscillation frequency with the frequency switching switch 9 or by switching the constant of the LC resonance circuit. This is performed by changing the capacity of the capacitor constituting the matching circuit 6 or the tap of the choke coil with the matching changeover switch 10. Also, the circuit power supply 11
Are supplied to the respective circuits via the power switch 12.
Furthermore, a proximity conductor 14 to which a high-voltage for starting is applied from a starting circuit 13 is provided in proximity to the electrodeless discharge lamp 1, so that starting can be easily performed.
以下、実施例の動作について説明する。第２図は動作
状態を示す図であり、いま、無電極放電灯１を点灯させ
ているT3期間においては、周波数切換スイッチ９をａ側
（周波数f1）にセットするとともに、整合切換スイッチ
10をオフにすることにより、周波数f1において無電極放
電灯１およびコイル２よりなる放電灯負荷回路と高周波
電源３との整合がとれた状態に設定される。この整合状
態においては、高周波電源３から出力される周波数f1の
高周波電力はコイル２を介して最も効率的に無電極放電
灯１に供給され、無電極放電灯１は安定に点灯される。
一方、電源スイッチ12を投入して無電極放電灯１を始動
するに際して、周囲温度が低い場合には、周波数切換ス
イッチ12をｂ側にセットして発振周波数をf2に変更する
ことにより、整合回路６による整合が不整合になるよう
に設定（T1期間）し、この不整合状態へのシフトによっ
て無電極放電灯１に給電される高周波電力を大幅に低下
させるとともに、コイル２には十分な高周波電流を流し
てコイル２の発熱を確保し、無電極放電灯１を点灯させ
ることなくガラスバルブ表面（最冷点）を加熱し、始動
特性の改善を図るようになっている。ところで、整合を
不整合にする方法としては、上述のように発振周波数を
切り換えることなく整合切換スイッチ10をオンすること
によっても不整合状態を実現する方法もあり、この場
合、発振周波数をf1のままにして整合回路６のコンデン
サの容量あるいはチョークコイルのインダクタンスを変
えることにより、無電極放電灯１を点灯させることなく
十分な加熱効果を得ることができるようになっている。
なお、周波数切換スイッチ９をａ側（発振周波数f1）に
設定して整合回路６の整合切換スイッチ10をオフにして
無電極放電灯１を点灯させる始動過程（T2期間）におけ
る不整合状態は、無電極放電灯１の始動時のインピーダ
ンス変化による不整合である。また、周囲温度が高い状
態で無電極放電灯１を点灯する場合には、単に電源スイ
ッチ12をオンにすれば良く、消灯する場合には電源スイ
ッチ12をオフにすれば良い。また、実施例では始動過程
において、無電極放電灯１に始動用高電圧を近接導体14
を介して印加して始動をスムーズに行うようになってい
る。Hereinafter, the operation of the embodiment will be described. Figure 2 is a diagram showing the operation state, now, in the period T 3 which turns on the electrodeless discharge lamp 1, as well as set the frequency change-over switch 9 to a side (frequency f 1), matching the change-over switch
By turning off the 10, it is set to a matched state of the discharge lamp load circuit and the high frequency power source 3 consisting of the electrodeless discharge lamp 1 and coil 2 at a frequency f 1. In this alignment, a high frequency power having a frequency f 1 that is output from the high frequency power source 3 is most efficiently supplied to the electrodeless discharge lamp 1 through the coil 2, the electrodeless discharge lamp 1 is lit stably.
On the other hand, when it the power switch 12 is turned on to start the electrodeless discharge lamp 1, when the ambient temperature is low, by changing the oscillation frequency f 2 is set to the frequency change-over switch 12 to the b side, matching set to matching by the circuit 6 is inconsistent with (T 1 period), along with greatly reduce the high frequency power fed to the electrodeless discharge lamp 1 by a shift to the inconsistent state, sufficient for coil 2 A high-frequency current is applied to secure the heat generation of the coil 2, and the glass bulb surface (the coldest point) is heated without turning on the electrodeless discharge lamp 1, thereby improving the starting characteristics. By the way, as a method of making the matching mismatch, there is also a method of realizing a mismatch state by turning on the matching changeover switch 10 without switching the oscillation frequency as described above. In this case, the oscillation frequency is set to f 1 By changing the capacitance of the capacitor of the matching circuit 6 or the inductance of the choke coil while keeping it as it is, a sufficient heating effect can be obtained without lighting the electrodeless discharge lamp 1.
Incidentally, inconsistent state in the frequency change-over switch 9 a side (the oscillation frequency f 1) to the setting to start the process of lighting the electrodeless discharge lamp 1 turns off the alignment changeover switch 10 of the matching circuit 6 (T 2 period) Is mismatch due to a change in impedance when the electrodeless discharge lamp 1 is started. When the electrodeless discharge lamp 1 is to be turned on in a state where the ambient temperature is high, the power switch 12 may be simply turned on, and when it is turned off, the power switch 12 may be turned off. In the embodiment, in the starting process, a high voltage for starting is applied to the electrodeless discharge lamp 1 by the adjacent conductor 14.
To start the engine smoothly.
ところで、無電極放電灯１が点灯している状態におい
て整合がとれるように発振回路４の発振周波数および整
合回路６の定数を設定している場合においても、無電極
放電灯１が点灯していない状態においては放電灯負荷回
路のインピーダンスが変化するので不整合状態になって
いることがある。この場合には、電源スイッチ12をオン
することによって不整合状態でコイル２に高周波電力が
給電され、無電極放電灯１が点灯しない状態で加熱が行
なわれることになるが、不整合状態によって無電極放電
灯１への高周波電力の供給が少なくなって始動が確実に
行えない場合がある。このような場合にあっても、実施
例では、始動回路13にて発生された始動用高電圧が近接
導体14を介して無電極放電灯１に印加されるので、始動
が確実に行えることになる。なお、無電極放電灯１が定
常点灯状態に移行した後は、上記不整合が解消されて高
周波電力が無電極放電灯１に効率的に供給されることは
言うまでもない。By the way, even when the oscillation frequency of the oscillation circuit 4 and the constant of the matching circuit 6 are set so that matching can be achieved while the electrodeless discharge lamp 1 is turned on, the electrodeless discharge lamp 1 is not turned on. In this state, the impedance of the discharge lamp load circuit changes, so that the state may be mismatched. In this case, when the power switch 12 is turned on, high-frequency power is supplied to the coil 2 in a mismatched state, and heating is performed in a state in which the electrodeless discharge lamp 1 is not turned on. In some cases, the supply of high-frequency power to the electrode discharge lamp 1 is so small that starting cannot be performed reliably. Even in such a case, in the embodiment, the starting high voltage generated in the starting circuit 13 is applied to the electrodeless discharge lamp 1 via the proximity conductor 14 so that the starting can be performed reliably. Become. Needless to say, after the electrodeless discharge lamp 1 shifts to the steady lighting state, the above-mentioned mismatch is eliminated and the high-frequency power is efficiently supplied to the electrodeless discharge lamp 1.
［発明の効果］ 本発明は上述のように、ガラスバルブ内に不活性ガ
ス、金属蒸気などの放電ガスを封入した無電極放電灯
と、無電極放電灯に沿って近接配置された高周波電力給
電用のコイルとからなる放電灯負荷回路と、上記コイル
に接続された高周波電源と、高周波電源と放電灯負荷回
路との整合をとる整合回路とを備えてなる無電極放電灯
点灯装置において、前記無電極放電灯を非点灯から始
動、点灯状態に点灯制御する場合に、前記整合回路を、
非点灯状態と始動状態では不整合状態に設定するととも
に、点灯状態では整合状態に設定する点灯制御手段を設
けたものであり、無電極放電灯が点灯しない状態で十分
な加熱を行うことができるので、低温時の始動特性を確
実に安定化することができるという効果がある。[Effects of the Invention] As described above, the present invention provides an electrodeless discharge lamp in which a discharge gas such as an inert gas or a metal vapor is sealed in a glass bulb, and a high-frequency power supply arranged in close proximity along the electrodeless discharge lamp. An electrodeless discharge lamp lighting device comprising: a discharge lamp load circuit comprising a coil for use; a high-frequency power supply connected to the coil; and a matching circuit for matching the high-frequency power supply with the discharge lamp load circuit. Starting the electrodeless discharge lamp from non-lighting, when lighting control to the lighting state, the matching circuit,
Lighting control means is provided for setting a mismatched state between the non-lighting state and the starting state, and setting a matching state for the lighted state, so that sufficient heating can be performed in a state where the electrodeless discharge lamp is not turned on. Therefore, there is an effect that the starting characteristics at a low temperature can be reliably stabilized.
第１図は本発明一実施例のブロック回路図、第２図は同
上の動作説明図、第３図は従来例の回路図、第４図は同
上の要部斜視図、第５図は他の従来例の要部斜視図、第
６図は同上の動作説明図、第７図は他の従来例のブロッ
ク回路図である。 １は無電極放電灯、２はコイル、３は高周波電源、４は
発振回路、５はパワーアンプ、６は整合回路、８は点灯
制御手段である。FIG. 1 is a block circuit diagram of one embodiment of the present invention, FIG. 2 is an explanatory diagram of the operation of the above, FIG. 3 is a circuit diagram of a conventional example, FIG. FIG. 6 is an operation explanatory view of the above conventional example, and FIG. 7 is a block circuit diagram of another conventional example. 1 is an electrodeless discharge lamp, 2 is a coil, 3 is a high frequency power supply, 4 is an oscillation circuit, 5 is a power amplifier, 6 is a matching circuit, and 8 is lighting control means.
───────────────────────────────────────────────────── フロントページの続き (56)参考文献 特開 昭62−97298（ＪＰ，Ａ) 特開 昭62−40199（ＪＰ，Ａ) 実開 昭57−151853（ＪＰ，Ｕ) 特公 昭61−37759（ＪＰ，Ｂ２) ──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-62-97298 (JP, A) JP-A-62-40199 (JP, A) JP-A-57-151853 (JP, U) 37759 (JP, B2)
Claims (1)
どの放電ガスを封入した無電極放電灯と、無電極放電灯
に沿って近接配置された高周波電力給電用のコイルとか
らなる放電灯負荷回路と、上記コイルに接続された高周
波電源と、高周波電源と放電灯負荷回路との整合をとる
整合回路とを備えてなる無電極放電灯点灯装置におい
て、前記無電極放電灯を非点灯から始動、点灯状態に点
灯制御する場合に、前記整合回路を、非点灯状態と始動
状態では不整合状態に設定するとともに、点灯状態では
整合状態に設定する点灯制御手段を設けたことを特徴と
する無電極放電灯点灯装置。1. A discharge lamp comprising an electrodeless discharge lamp in which a discharge gas such as an inert gas or a metal vapor is sealed in a glass bulb, and a coil for high-frequency power supply arranged closely along the electrodeless discharge lamp. A load circuit, a high-frequency power supply connected to the coil, and an electrodeless discharge lamp lighting device including a matching circuit for matching the high-frequency power supply and the discharge lamp load circuit. In the case where the lighting control is performed in the starting and lighting state, the matching circuit is set to a mismatched state in the non-lighting state and the starting state, and a lighting control unit for setting the matching circuit to a matching state in the lighting state is provided. Electrodeless discharge lamp lighting device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62148458A JP2619392B2 (en) | 1987-06-15 | 1987-06-15 | Electrodeless discharge lamp lighting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62148458A JP2619392B2 (en) | 1987-06-15 | 1987-06-15 | Electrodeless discharge lamp lighting device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS63313495A JPS63313495A (en) | 1988-12-21 |
| JP2619392B2 true JP2619392B2 (en) | 1997-06-11 |
Family
ID=15453210
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62148458A Expired - Lifetime JP2619392B2 (en) | 1987-06-15 | 1987-06-15 | Electrodeless discharge lamp lighting device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2619392B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3887862B2 (en) * | 1997-01-28 | 2007-02-28 | 松下電工株式会社 | Electrodeless discharge lamp lighting device |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6137759A (en) * | 1984-07-30 | 1986-02-22 | イ−・アイ・デユポン・デ・ニモアス・アンド・カンパニ− | Manufacture of isocyanate using improved catalyst |
| JPH0646599B2 (en) * | 1985-10-21 | 1994-06-15 | 松下電工株式会社 | Electrodeless discharge lamp device |
-
1987
- 1987-06-15 JP JP62148458A patent/JP2619392B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPS63313495A (en) | 1988-12-21 |
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