JPH06243977A - Electrodeless discharge lamp lighting device - Google Patents

Electrodeless discharge lamp lighting device

Info

Publication number
JPH06243977A
JPH06243977A JP2501993A JP2501993A JPH06243977A JP H06243977 A JPH06243977 A JP H06243977A JP 2501993 A JP2501993 A JP 2501993A JP 2501993 A JP2501993 A JP 2501993A JP H06243977 A JPH06243977 A JP H06243977A
Authority
JP
Japan
Prior art keywords
coil
impedance matching
resonance
power supply
frequency power
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.)
Withdrawn
Application number
JP2501993A
Other languages
Japanese (ja)
Inventor
Yuji Kumagai
祐二 熊谷
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Panasonic Electric Works Co Ltd
Original Assignee
Matsushita Electric Works Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Matsushita Electric Works Ltd filed Critical Matsushita Electric Works Ltd
Priority to JP2501993A priority Critical patent/JPH06243977A/en
Publication of JPH06243977A publication Critical patent/JPH06243977A/en
Withdrawn legal-status Critical Current

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Abstract

PURPOSE:To provide an electrodeless discharge lamp lighting device by which mutual interference between magnetic flux generated in a resonance coil and magnetic flux generated in an impedance matching coil can be prevented. CONSTITUTION:In a high frequency electric power supply coil L4 arranged in close vicinity to an electrodeless discharge lamp 1, high frequency electric power supply 3 to supply high frequency electric power to the high frequency electric power supply coil L4 and an impedance matching circuit 4 to transmit high frequency electric power efficiently to the electrodeless discharge lamp 1 by matching impedance between the high frequency electric power supply coil L4 and the high frequency electric power supply 3, are connected to the high frequency electric power supply coil L4, and an electrodeless discharge lamp lighting device is constituted. Since a resonance capacitor C is connected between an impedance matching coil L2 and a resonance coil L1, a distance between the resonance coil L1 and the impedance matching coil L2 becomes larger than usual, so that mutual interference between magnetic flux generated in the resonance coil L1 and magnetic flux generated in the impedance matching coil L2 can be prevented.

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、無電極放電ランプに高
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。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electrodeless discharge lamp lighting device which emits light by applying a high frequency electromagnetic field to an electrodeless discharge lamp.

【0002】[0002]

【従来の技術】図2は従来の無電極放電灯点灯装置の一
例を示すもので、使用する無電極放電ランプ1は、石英
やセラミクスなどの透光性材料で気密に形成されたバル
ブの内部に希ガスあるいは希ガスの放電によって励起発
光する物質などを封入し、内管面には必要に応じて蛍光
体が塗布されている。無電極放電ランプ1の外周には、
導電性の良い金属などで形成された高周波電力供給用コ
イルL4 が近接して配設されている。この高周波電力供
給用コイルL4 に高周波電力を供給する高周波電源3
と、高周波電力供給用コイルL4 と高周波電源3とのイ
ンピーダンスを整合させ、反射を無くして無電極放電ラ
ンプ1に効率よく高周波電力を伝達するインピーダンス
整合回路4とを高周波電力供給用コイルL4 に接続し
て、無電極放電灯点灯装置が構成されている。そして、
高周波電源3から高周波電力供給用コイルL4 に数MH
zから数100MHzの高周波電流を流すことにより、
高周波電力供給用コイルL4 に高周波電磁界を発生さ
せ、無電極放電ランプ1に高周波電力を供給し、無電極
放電ランプ1内に高周波プラズマ電流を発生させて紫外
線もしくは可視光を発生するようになっている。
2. Description of the Related Art FIG. 2 shows an example of a conventional electrodeless discharge lamp lighting device. The electrodeless discharge lamp 1 used is an interior of a bulb formed airtightly with a transparent material such as quartz or ceramics. A rare gas or a substance that excites and emits light when a rare gas is discharged is sealed in, and the inner tube surface is coated with a phosphor as needed. On the outer circumference of the electrodeless discharge lamp 1,
A high-frequency power supply coil L 4 formed of a metal having good conductivity is arranged close to each other. A high frequency power supply 3 for supplying high frequency power to the high frequency power supply coil L 4.
When, by matching the impedance of the high frequency power supplying coil L 4 and the high-frequency power source 3, the impedance matching circuit 4 and the high-frequency power supplying coil L 4 to be efficiently transmitted high frequency power by eliminating reflections electrodeless discharge lamp 1 To form an electrodeless discharge lamp lighting device. And
From the high frequency power source 3 to the high frequency power supply coil L 4 several MH
By passing a high frequency current of several hundred MHz from z,
A high-frequency electromagnetic field is generated in the high-frequency power supply coil L 4 , high-frequency power is supplied to the electrodeless discharge lamp 1, and a high-frequency plasma current is generated in the electrodeless discharge lamp 1 to generate ultraviolet rays or visible light. Has become.

【0003】ここで、図2に示すように、高周波電源3
は、高周波電圧を発生する発振部2と、前記高周波電圧
を増幅するE級増幅回路5とで構成されている。また、
E級増幅回路5は、直流電流が流れるよう充分大きなイ
ンダクタンスを持ったRFチョークコイルL3 と、スイ
ッチング素子Qと、共振用コイルL1 と、共振用コンデ
ンサCとを備えている。RFチョークコイルL3 は、充
分大きなインダクタンスを得るためにフェライト等のト
ロイダルコアを持ち、共振用コイルL1 は、高周波共振
用であるため空心コイルを使用するのが一般的である。
Here, as shown in FIG. 2, the high frequency power source 3
Is composed of an oscillating section 2 for generating a high frequency voltage and a class E amplifier circuit 5 for amplifying the high frequency voltage. Also,
The class E amplifier circuit 5 includes an RF choke coil L 3 having a sufficiently large inductance so that a direct current can flow, a switching element Q, a resonance coil L 1, and a resonance capacitor C. The RF choke coil L 3 has a toroidal core such as ferrite in order to obtain a sufficiently large inductance, and the resonance coil L 1 is for high frequency resonance, and therefore an air core coil is generally used.

【0004】インピーダンス整合回路4には、無電極放
電ランプ1の負荷変動に対して出力を安定に保つインピ
ーダンス反転回路6が備わっている。このインピーダン
ス反転回路6は、インピーダンス整合コイルL2 とコン
デンサの並列回路で構成され、インピーダンス整合コイ
ルL2 には空心コイルが一般的に使用される。さらに、
高周波電力供給用コイルL4 に直列に接続されたコンデ
ンサC1 と、高周波電力供給用コイルL4 に並列に接続
されたコンデンサC2 とは、無電極放電ランプ1の始動
時と定常点灯時とで高周波電力供給用コイルL4 に効率
よく高周波電力を伝達するための容量値が異なり、一方
に合わせると他方の電力損失が大きくなってしまうの
で、異なる二つの最適な容量値の略中間値をとるように
設定する。
The impedance matching circuit 4 is provided with an impedance reversing circuit 6 for keeping the output stable with respect to the load fluctuation of the electrodeless discharge lamp 1. The impedance inverting circuit 6 is composed of a parallel circuit of an impedance matching coil L 2 and a capacitor, and an air-core coil is generally used as the impedance matching coil L 2 . further,
A capacitor C 1 connected in series to the high frequency power supplying coil L 4, a high frequency power supplying coil L 4 capacitor C 2 connected in parallel, the time of start of the electrodeless discharge lamp 1 and the rated operation Therefore, the capacitance value for efficiently transmitting the high frequency power to the high frequency power supply coil L 4 is different, and if it is matched with one, the power loss of the other becomes large. Set to take.

【0005】[0005]

【発明が解決しようとする課題】上述した従来例では、
E級増幅回路5内の共振用コンデンサCと共振用コイル
1 の接続の順は特に考慮されておらず、E級増幅回路
5の共振用コイルL1 に接近して、インピーダンス整合
回路4内のインピーダンス整合コイルL2 のように外部
に漏れる磁束が多い空心コイルを接続すると、共振用コ
イルL1 とインピーダンス整合コイルL2 の磁束が互い
に干渉しあって正常に動作しなくなることがあるという
問題がある。これに対して、図3に示すように、共振用
コイルL1とインピーダンス整合コイルL2 との距離を
離すと、二つのコイルの間に不要なスペースsができて
しまい、不要なスペースsの部分のパターンを引き延ば
すことによって、不要なインダクタンス成分等が生じる
ので回路設計を行う上で不都合が生じるという問題があ
る。
In the above-mentioned conventional example,
E-class amplifying circuit 5 in the order of connection of the resonant capacitor C and the resonance coil L 1 of has not been particularly considered, in proximity to the resonance coil L 1 of the E-class amplifier circuit 5, an impedance matching circuit 4 When an air-core coil having a large amount of magnetic flux leaking to the outside, such as the impedance matching coil L 2 , is connected, the magnetic flux of the resonance coil L 1 and the magnetic flux of the impedance matching coil L 2 interfere with each other, which may prevent normal operation. There is. On the other hand, as shown in FIG. 3, when the distance between the resonance coil L 1 and the impedance matching coil L 2 is increased, an unnecessary space s is created between the two coils, and the unnecessary space s By extending the pattern of the part, an unnecessary inductance component or the like is generated, which causes a problem in designing a circuit.

【0006】本発明は上記問題点の解決を目的とするも
のであり、不要なスペースをつくることなく、回路に含
まれる二つのコイルの間の相互干渉を防止する無電極放
電灯点灯装置を提供しようとするものである。
The present invention is intended to solve the above problems, and provides an electrodeless discharge lamp lighting device which prevents mutual interference between two coils included in a circuit without creating an unnecessary space. Is what you are trying to do.

【0007】[0007]

【課題を解決するための手段】請求項1の発明は、上記
目的を達成するために、希ガスや金属蒸気等の放電ガス
をガラスバルブ内に封入し、内部に電極を持たない無電
極放電ランプと、無電極放電ランプに近接して配設した
高周波電力供給用コイルと、少なくともスイッチング素
子と共振用コイルと共振用コンデンサとを備えたD級あ
るいはE級増幅回路を具備し、高周波電力供給用コイル
に高周波電力を供給する高周波電源と、インピーダンス
整合コイルを備え、高周波電源と高周波電力供給用コイ
ルとのインピーダンス整合をとるインピーダンス整合回
路とから成る無電極放電灯点灯装置において、スイッチ
ング素子と共振用コイルとインピーダンス整合コイルの
三つの回路要素から任意に選択した二つの回路要素間の
距離のうち、共振用コイルとインピーダンス整合コイル
との距離を、他の二つの組み合わせにおける距離の少な
くとも一方よりも長くしたのである。
In order to achieve the above object, the invention of claim 1 is an electrodeless discharge in which a discharge gas such as a rare gas or a metal vapor is enclosed in a glass bulb and no electrode is provided inside. A high frequency power supply including a lamp, a high frequency power supply coil disposed in the vicinity of the electrodeless discharge lamp, and a class D or class E amplifier circuit including at least a switching element, a resonance coil and a resonance capacitor. In an electrodeless discharge lamp lighting device comprising a high-frequency power supply for supplying high-frequency power to a power supply coil, an impedance matching coil, and an impedance matching circuit for impedance matching between the high-frequency power supply and the high-frequency power supply coil, a switching element and resonance Of the distance between two circuit elements arbitrarily selected from the three circuit elements of the coil for impedance and the impedance matching coil The distance between the coil and the impedance matching coil is was longer than at least one of the distance in the other two combinations.

【0008】請求項2の発明は、高周波電源にRFチョ
ークコイルを備えたE級増幅回路を用い、RFチョーク
コイルと共振用コイルとインピーダンス整合コイルの三
つの回路要素から任意に選択した二つの回路要素間の距
離のうち、共振用コイルとインピーダンス整合コイルと
の距離を、他の二つの組み合わせにおける距離の少なく
とも一方よりも長くしたのである。
According to a second aspect of the invention, a class E amplifier circuit having an RF choke coil is used as a high frequency power source, and two circuits arbitrarily selected from three circuit elements of an RF choke coil, a resonance coil and an impedance matching coil. Among the distances between the elements, the distance between the resonance coil and the impedance matching coil is made longer than at least one of the distances in the other two combinations.

【0009】請求項3の発明は、高周波電源とインピー
ダンス整合回路との接続において、共振用コイルとイン
ピーダンス整合コイルとの間に共振用コンデンサを接続
したのである。
According to the third aspect of the present invention, a resonance capacitor is connected between the resonance coil and the impedance matching coil in the connection between the high frequency power supply and the impedance matching circuit.

【0010】[0010]

【作用】請求項1の発明の構成では、スイッチング素子
と共振用コイルとインピーダンス整合コイルの三つの回
路要素から任意に選択した二つの回路要素間の距離のう
ち、共振用コイルとインピーダンス整合コイルとの距離
を、他の二つの組み合わせにおける距離の少なくとも一
方よりも長くすることによって、共振用コイルに生じる
磁束とインピーダンス整合コイルに生じる磁束とが、相
互に干渉するのを防ぐのである。
In the configuration of the invention of claim 1, among the distances between the two circuit elements arbitrarily selected from the three circuit elements of the switching element, the resonance coil and the impedance matching coil, the resonance coil and the impedance matching coil are selected. By making the distance of (1) longer than at least one of the distances of the other two combinations, the magnetic flux generated in the resonance coil and the magnetic flux generated in the impedance matching coil are prevented from interfering with each other.

【0011】請求項2の発明の構成では、高周波電源内
のE級増幅回路に設けられたRFチョークコイルと共振
用コイルとインピーダンス整合コイルの三つのコイルか
ら任意に選択した二つのコイル間の距離のうち、共振用
コイルとインピーダンス整合コイルとの距離を、他の二
つの組み合わせにおける距離の少なくとも一方よりも長
くすることによって、共振用コイルに生じる磁束とイン
ピーダンス整合コイルに生じる磁束とが、相互に干渉す
るのを防ぐのである。
According to the second aspect of the present invention, the distance between two coils arbitrarily selected from the three coils of the RF choke coil, the resonance coil, and the impedance matching coil provided in the class E amplifier circuit in the high frequency power supply. Among them, by making the distance between the resonance coil and the impedance matching coil longer than at least one of the distances in the other two combinations, the magnetic flux generated in the resonance coil and the magnetic flux generated in the impedance matching coil are mutually Prevent interference.

【0012】請求項3の発明の構成では、共振用コイル
とインピーダンス整合コイルとの間に共振用コンデンサ
を接続することによって、共振用コイルとインピーダン
ス整合コイルとの距離を充分とり、共振用コイルに生じ
る磁束とインピーダンス整合コイルに生じる磁束とが、
相互に干渉するのを防ぐのである。
According to the third aspect of the present invention, by connecting the resonance capacitor between the resonance coil and the impedance matching coil, a sufficient distance is provided between the resonance coil and the impedance matching coil to form the resonance coil. The magnetic flux generated and the magnetic flux generated in the impedance matching coil are
It prevents them from interfering with each other.

【0013】[0013]

【実施例】本実施例は、図1に示すように基本的に従来
例と同じであるが、E級増幅回路5内の共振用コイルL
1 と共振用コンデンサCの接続位置が、図2に示す従来
例の接続位置と入れ替わっており、インピーダンス整合
回路4内のインピーダンス整合コイルL2 と共振用コイ
ルL1 との間に共振用コンデンサCが接続されている。
したがって、実際の部品実装において、共振用コイルL
1 とインピーダンス整合コイルL2 との距離は、間に共
振用コンデンサCを接続することによって従来よりも大
きくなり、共振用コイルL1 で生じる磁束とインピーダ
ンス整合コイルL2 で生じる磁束との相互干渉が防止で
きるのである。
EXAMPLE This example is basically the same as the conventional example as shown in FIG. 1, but the resonance coil L in the class E amplifier circuit 5 is
The connection position of 1 and the resonance capacitor C is replaced with the connection position of the conventional example shown in FIG. 2, and the resonance capacitor C is placed between the impedance matching coil L 2 and the resonance coil L 1 in the impedance matching circuit 4. Are connected.
Therefore, in actual component mounting, the resonance coil L
The distance between 1 and the impedance matching coil L 2 becomes larger than before by connecting the resonance capacitor C, and the mutual interference between the magnetic flux generated in the resonance coil L 1 and the magnetic flux generated in the impedance matching coil L 2. Can be prevented.

【0014】また、本実施例の構成であれば、図3に示
すような不要なスペースsは生じないので、不要なスペ
ースsの部分のパターンを引き延ばすことによるインダ
クタンス成分等の影響を防止することができる。また、
本実施例においては、共振用コイルL1 とRFチョーク
コイルL3 との距離が従来例よりも接近することにな
る。しかし、RFチョークコイルL3 は一般的にトロイ
ダルコア等の磁心を持ち、共振用コイルL1 やインピー
ダンス整合コイルL2 に使用される空心コイルに比べて
外部に漏れる磁束は少ないので、漏れ磁束による相互干
渉を避けるために必要な距離は、共振用コイルL1 とイ
ンピーダンス整合コイルL2 との距離よりも短くてよ
い。
Further, with the structure of this embodiment, since the unnecessary space s as shown in FIG. 3 does not occur, it is possible to prevent the influence of the inductance component and the like due to the extension of the pattern of the unnecessary space s. You can Also,
In the present embodiment, the distance between the resonance coil L 1 and the RF choke coil L 3 is closer than in the conventional example. However, the RF choke coil L 3 generally has a magnetic core such as a toroidal core, and the amount of magnetic flux leaking to the outside is smaller than that of the air-core coil used for the resonance coil L 1 and the impedance matching coil L 2. The distance required to avoid mutual interference may be shorter than the distance between the resonance coil L 1 and the impedance matching coil L 2 .

【0015】なお、本実施例において実際に回路を構成
して実装する場合に、共振用コイルL1 、インピーダン
ス整合コイルL2 、RFチョークコイルL3 の各コイル
に生じる磁束が互いに直交するように配置すれば、各コ
イルの磁束の相互干渉を防止する効果は大きくなる。
In the present embodiment, when the circuit is actually configured and mounted, the magnetic fluxes generated in the resonance coil L 1 , the impedance matching coil L 2 and the RF choke coil L 3 are arranged so as to be orthogonal to each other. By arranging them, the effect of preventing mutual interference of the magnetic flux of each coil becomes large.

【0016】[0016]

【発明の効果】請求項1の発明は、スイッチング素子と
共振用コイルとインピーダンス整合コイルの三つの回路
要素から任意に選択した二つの回路要素間の距離のう
ち、共振用コイルとインピーダンス整合コイルとの距離
を、他の二つの組み合わせにおける距離の少なくとも一
方よりも長くしたので、共振用コイルに生じる磁束とイ
ンピーダンス整合コイルに生じる磁束とが相互に干渉す
ることがなく、増幅回路やインピーダンス整合回路が正
常に動作しなくなるのを防ぐことができるという効果が
ある。
According to the invention of claim 1, among the distances between two circuit elements arbitrarily selected from the three circuit elements of the switching element, the resonance coil and the impedance matching coil, the resonance coil and the impedance matching coil are selected. Since the distance is made longer than at least one of the distances in the other two combinations, the magnetic flux generated in the resonance coil and the magnetic flux generated in the impedance matching coil do not interfere with each other, and the amplifier circuit and the impedance matching circuit are This has the effect of preventing the malfunction of the device.

【0017】請求項2の発明は、高周波電源内のE級増
幅回路に設けられたRFチョークコイルと共振用コイル
とインピーダンス整合コイルの三つの回路要素から任意
に選択した二つの回路要素間の距離のうち、共振用コイ
ルとインピーダンス整合コイルとの距離を、他の二つの
組み合わせにおける距離の少なくとも一方よりも長くし
たので、共振用コイルに生じる磁束とインピーダンス整
合コイルに生じる磁束とが相互に干渉することがなく、
増幅回路やインピーダンス整合回路が正常に動作しなく
なるのを防ぐことができるという効果がある。
According to a second aspect of the present invention, the distance between two circuit elements arbitrarily selected from the three circuit elements of the RF choke coil, the resonance coil and the impedance matching coil provided in the class E amplifier circuit in the high frequency power supply. Among these, since the distance between the resonance coil and the impedance matching coil is made longer than at least one of the distances in the other two combinations, the magnetic flux generated in the resonance coil and the magnetic flux generated in the impedance matching coil interfere with each other. Without
There is an effect that it is possible to prevent the amplifier circuit and the impedance matching circuit from malfunctioning.

【0018】請求項3の発明は、共振用コイルとインピ
ーダンス整合コイルとの間に共振用コンデンサを接続し
たので、共振用コイルとインピーダンス整合コイルとの
距離が長くなり、共振用コイルに生じる磁束とインピー
ダンス整合コイルに生じる磁束との相互干渉を防ぎ、増
幅回路やインピーダンス整合回路が正常に動作しなくな
るのを防ぐことができるという効果と、共振用コイルと
インピーダンス整合コイルとの間に不要なスペースを設
ける必要がないので、不要なスペースのパターンの引き
延ばしによってインダクタンス成分が生じるのを防ぐこ
とができるという効果がある。
According to the third aspect of the invention, since the resonance capacitor is connected between the resonance coil and the impedance matching coil, the distance between the resonance coil and the impedance matching coil becomes long, and the magnetic flux generated in the resonance coil is The effect of preventing mutual interference with the magnetic flux generated in the impedance matching coil and preventing the amplifier circuit and impedance matching circuit from malfunctioning, and creating an unnecessary space between the resonance coil and the impedance matching coil Since it is not necessary to provide it, there is an effect that it is possible to prevent an inductance component from being generated by extending the pattern of an unnecessary space.

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

【図1】実施例を示す回路構成図である。FIG. 1 is a circuit configuration diagram showing an embodiment.

【図2】従来例を示す回路構成図である。FIG. 2 is a circuit configuration diagram showing a conventional example.

【図3】同上の一部分を示す回路構成図である。FIG. 3 is a circuit configuration diagram showing a part of the above.

【符号の説明】[Explanation of symbols]

1 無電極放電ランプ 2 発振部 3 高周波電源 4 インピーダンス整合回路 5 E級増幅回路 6 インピーダンス反転回路 L1 共振用コイル L2 インピーダンス整合コイル L3 RFチョークコイル L4 高周波電力供給用コイル C 共振用コンデンサ1 Electrodeless discharge lamp 2 Oscillator 3 High frequency power supply 4 Impedance matching circuit 5 Class E amplifier circuit 6 Impedance inversion circuit L 1 Resonance coil L 2 Impedance matching coil L 3 RF choke coil L 4 High frequency power supply coil C Resonance capacitor

Claims (3)

【特許請求の範囲】[Claims] 【請求項1】 希ガスや金属蒸気等の放電ガスをガラス
バルブ内に封入し、内部に電極を持たない無電極放電ラ
ンプと、無電極放電ランプに近接して配設した高周波電
力供給用コイルと、少なくともスイッチング素子と共振
用コイルと共振用コンデンサとを備えたD級あるいはE
級増幅回路を具備し、高周波電力供給用コイルに高周波
電力を供給する高周波電源と、インピーダンス整合コイ
ルを備え、高周波電源と高周波電力供給用コイルとのイ
ンピーダンス整合をとるインピーダンス整合回路とから
成る無電極放電灯点灯装置において、スイッチング素子
と共振用コイルとインピーダンス整合コイルの三つの回
路要素から任意に選択した二つの回路要素間の距離のう
ち、共振用コイルとインピーダンス整合コイルとの距離
を、他の二つの組み合わせにおける距離の少なくとも一
方よりも長くしたことを特徴とする無電極放電灯点灯装
置。
1. A non-electrode discharge lamp having no electrodes inside, and a high-frequency power supply coil disposed in the vicinity of the no-electrode discharge lamp, in which a discharge gas such as rare gas or metal vapor is sealed in a glass bulb. And a class D or E having at least a switching element, a resonance coil, and a resonance capacitor
Electrode-free, which includes a high-frequency power supply that includes a class amplifier circuit and that supplies high-frequency power to the high-frequency power supply coil, and an impedance matching circuit that includes an impedance matching coil and performs impedance matching between the high-frequency power supply and the high-frequency power supply coil In the discharge lamp lighting device, among the distances between the two circuit elements arbitrarily selected from the three circuit elements of the switching element, the resonance coil, and the impedance matching coil, the distance between the resonance coil and the impedance matching coil is An electrodeless discharge lamp lighting device, characterized in that the distance is made longer than at least one of the two combinations.
【請求項2】 高周波電源にはRFチョークコイルを備
えたE級増幅回路を用い、RFチョークコイルと共振用
コイルとインピーダンス整合コイルの三つの回路要素か
ら任意に選択した二つの回路要素間の距離のうち、共振
用コイルとインピーダンス整合コイルとの距離を、他の
二つの組み合わせにおける距離の少なくとも一方よりも
長くしたことを特徴とする請求項1記載の無電極放電灯
点灯装置。
2. A class E amplifier circuit having an RF choke coil is used as a high frequency power source, and a distance between two circuit elements arbitrarily selected from three circuit elements of an RF choke coil, a resonance coil and an impedance matching coil. 2. The electrodeless discharge lamp lighting device according to claim 1, wherein the distance between the resonance coil and the impedance matching coil is made longer than at least one of the distances in the other two combinations.
【請求項3】 高周波電源とインピーダンス整合回路と
の接続において、共振用コイルとインピーダンス整合コ
イルとの間に共振用コンデンサを接続したことを特徴と
する請求項1または請求項2記載の無電極放電灯点灯装
置。
3. The electrodeless discharge according to claim 1 or 2, wherein a resonance capacitor is connected between the resonance coil and the impedance matching coil in the connection between the high frequency power supply and the impedance matching circuit. Electric lighting device.
JP2501993A 1993-02-15 1993-02-15 Electrodeless discharge lamp lighting device Withdrawn JPH06243977A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2501993A JPH06243977A (en) 1993-02-15 1993-02-15 Electrodeless discharge lamp lighting device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2501993A JPH06243977A (en) 1993-02-15 1993-02-15 Electrodeless discharge lamp lighting device

Publications (1)

Publication Number Publication Date
JPH06243977A true JPH06243977A (en) 1994-09-02

Family

ID=12154201

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2501993A Withdrawn JPH06243977A (en) 1993-02-15 1993-02-15 Electrodeless discharge lamp lighting device

Country Status (1)

Country Link
JP (1) JPH06243977A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100402432B1 (en) * 1996-09-25 2004-03-20 마사카즈 우시지마 Inverter circuit for discharging tube

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100402432B1 (en) * 1996-09-25 2004-03-20 마사카즈 우시지마 Inverter circuit for discharging tube

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