JPH1140382A - Lamp lighting device - Google Patents
Lamp lighting deviceInfo
- Publication number
- JPH1140382A JPH1140382A JP18946397A JP18946397A JPH1140382A JP H1140382 A JPH1140382 A JP H1140382A JP 18946397 A JP18946397 A JP 18946397A JP 18946397 A JP18946397 A JP 18946397A JP H1140382 A JPH1140382 A JP H1140382A
- Authority
- JP
- Japan
- Prior art keywords
- lighting device
- resistor
- lamp
- impedance
- voltage
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Landscapes
- Circuit Arrangements For Discharge Lamps (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、高周波インバータ
回路を使用したランプ点灯装置に関する。The present invention relates to a lamp lighting device using a high-frequency inverter circuit.
【０００２】[0002]
【従来の技術】この種の点灯装置には、ハーフブリッジ
インバータやプッシュプルインバータが一般的に使用さ
れている。2. Description of the Related Art A half-bridge inverter and a push-pull inverter are generally used for this type of lighting device.
【０００３】[0003]
【発明が解決しようとする課題】これら点灯装置に組み
合わされるスイッチに手元照明付スイッチがあり、この
スイッチはオフの時に内蔵のネオン放電管が点灯するも
のである。One of the switches associated with these lighting devices is a switch with a hand illuminator, which turns on a built-in neon discharge tube when the switch is off.
【０００４】この種のスイッチと組み合わせて使用した
場合、スイッチがオフの時に点灯装置が間欠動作しラン
プが点滅する問題があった。When used in combination with this type of switch, there is a problem that when the switch is off, the lighting device operates intermittently and the lamp blinks.
【０００５】[0005]
【課題を解決するための手段】手元照明付スイッチは、
オフの状態でもネオン放電管を点灯させるだけの電流が
流れるため、インピーダンスを持っている。電源に対し
て点灯装置は、スイッチと直列接続されており、電源電
圧をスイッチのインピーダンスと点灯装置のインピーダ
ンスで分圧した電圧が、スイッチオフ時に点灯装置に印
加される。この印加された電圧が、点灯装置の動作電圧
以上の時に点灯装置が間欠動作し、ランプが点滅する。The switch with hand lighting is
Even in the off state, current flows enough to light the neon discharge tube, and therefore has impedance. The lighting device is connected to the switch in series with the switch, and a voltage obtained by dividing the power supply voltage by the impedance of the switch and the impedance of the lighting device is applied to the lighting device when the switch is off. When the applied voltage is equal to or higher than the operating voltage of the lighting device, the lighting device intermittently operates, and the lamp blinks.
【０００６】上記課題に対する第１の対応は、点灯装置
の入力段に抵抗器を挿入することで、点灯装置の入力イ
ンピーダンスを小さくし、スイッチオフ時に点灯装置に
印加される電圧を動作電圧以下にしランプを点滅させな
いようにするものである。A first solution to the above problem is to reduce the input impedance of the lighting device by inserting a resistor in the input stage of the lighting device, and to reduce the voltage applied to the lighting device when the switch is turned off to the operating voltage or less. This is to prevent the lamp from blinking.
【０００７】第２の対応は、整流平滑回路の出力段に抵
抗器を挿入することで、点灯装置の入力インピーダンス
を小さくし、スイッチオフ時に点灯装置に印加される電
圧を動作電圧以下にしランプを点滅させないようにする
ものである。A second measure is to reduce the input impedance of the lighting device by inserting a resistor in the output stage of the rectifying / smoothing circuit, to reduce the voltage applied to the lighting device when the switch is turned off to the operating voltage or less, and to operate the lamp. It does not blink.
【０００８】[0008]
【発明の実施の形態】図１は本発明の一実施例を示すブ
ロック図である。１００Ｖの交流電源Ｅに手元照明付ス
イッチを介して本発明の点灯装置及びランプが接続され
る。点灯装置の入力段には、入力インピーダーンス低減
用に抵抗Ｒ１を接続している。ノイズフィルタには図示
しないチョークコイルとコンデンサの積分回路を用い、
整流平滑回路には倍電圧整流方式を採用している。イン
バータ回路はスイッチング素子にＭＯＳ−ＦＥＴを用い
たハーフブリッジ回路とし、ランプは１５Ｗの蛍光ラン
プを用いている。この点灯装置は、入力電圧が１００Ｖ
の時に消費電力が１５Ｗになるよう設計してあり、入力
電圧が２０Ｖより下がると消灯する特性を持っている。FIG. 1 is a block diagram showing an embodiment of the present invention. The lighting device and the lamp of the present invention are connected to a 100 V AC power supply E via a switch with hand illumination. A resistor R1 is connected to an input stage of the lighting device to reduce input impedance. Using a choke coil and capacitor integration circuit (not shown) for the noise filter,
The rectifying and smoothing circuit employs a voltage doubler rectification method. The inverter circuit is a half bridge circuit using a MOS-FET as a switching element, and a 15 W fluorescent lamp is used as a lamp. This lighting device has an input voltage of 100 V
In this case, the power consumption is designed to be 15 W, and when the input voltage falls below 20 V, the light is turned off.
【０００９】図２は手元照明付スイッチの回路図で、ス
イッチＳＷと抵抗Ｒ４と電流制限抵抗Ｒ３を介してネオ
ン放電管ＮＬとが並列接続されている。手元照明付スイ
ッチはオフの時に、ネオン放電管ＮＬに電流が流れ、ネ
オン放電管ＮＬが発光する。FIG. 2 is a circuit diagram of a switch with a hand illumination, in which a switch SW, a resistor R4 and a current limiting resistor R3 are connected in parallel to a neon discharge tube NL. When the hand illuminated switch is off, a current flows through the neon discharge tube NL, and the neon discharge tube NL emits light.
【００１０】抵抗器Ｒ１を挿入する前のスイッチオフ時
の回路動作について説明する。スイッチのインピーダン
スと点灯装置の入力インピーダンスによって決まる微少
電流が点灯装置に流れ込む。この電流の一部が整流平滑
回路の電解コンデンサを充電し、整流平滑回路の出力電
圧が徐々に上昇していき、ランプが放電開始する。充電
電流よりもランプの負荷電流の方が大きいため、ランプ
は放電を維持できずに瞬時に消灯する。その時点で負荷
電流がなくなるため、電解コンデンサの充電が再開され
整流回路出力電圧が上昇し、ランプの一瞬の放電に至
る。スイッチがオフの期間は、この点滅動作が繰り返さ
れる。The circuit operation when the switch is turned off before the resistor R1 is inserted will be described. A minute current determined by the impedance of the switch and the input impedance of the lighting device flows into the lighting device. Part of this current charges the electrolytic capacitor of the rectifying / smoothing circuit, the output voltage of the rectifying / smoothing circuit gradually increases, and the lamp starts discharging. Since the load current of the lamp is larger than the charging current, the lamp cannot be maintained and is turned off instantly. At that point, the load current disappears, so that the charging of the electrolytic capacitor is restarted, the output voltage of the rectifier circuit increases, and the lamp is discharged instantaneously. This blinking operation is repeated while the switch is off.
【００１１】抵抗器Ｒ１を挿入したときの動作について
説明する。Ｒ１の抵抗値を１００ｋオーム以下にした時
にランプが点滅動作しないことを確認した。スイッチの
インピーダンスはほぼ抵抗負荷の約４００ｋオームであ
る。一方、図１に示すように抵抗器Ｒ１を入力段に挿入
したことにより、点灯装置の入力インピーダンスは概略
Ｒ１の抵抗値以下となる。従って図３に示すように、ス
イッチのインピーダンスＺＳと点灯装置の入力インピー
ダンスＺＬにより、点灯装置に発生する電圧降下ＶＬ
は、Ｒ１の抵抗値を１００ｋオームとした時２０Ｖ以下
となる。この点灯装置の点灯維持電圧は約２０Ｖであ
り、一致している。The operation when the resistor R1 is inserted will be described. It was confirmed that the lamp did not blink when the resistance value of R1 was reduced to 100 kΩ or less. The switch impedance is approximately 400k ohms, approximately a resistive load. On the other hand, by inserting the resistor R1 in the input stage as shown in FIG. 1, the input impedance of the lighting device becomes approximately equal to or less than the resistance value of R1. Therefore, as shown in FIG. 3, the voltage drop VL generated in the lighting device is determined by the impedance ZS of the switch and the input impedance ZL of the lighting device.
Is 20 V or less when the resistance value of R1 is 100 kΩ. The lighting maintenance voltage of this lighting device is about 20 V, which is the same.
【００１２】本発明の第２の実施例について図４を用い
て説明する。１００Ｖの交流電源Ｅに手元照明付スイッ
チを介して本発明の点灯装置及びランプが接続される。
点灯装置の整流平滑出力段に抵抗器Ｒ２を接続してい
る。他の部品構成は、図１と同様であり、性能は同等で
ある。Ｒ２の抵抗値を１Ｍオーム以下にした時にランプ
が点滅動作しないことを確認した。電解コンデンサの充
電電流を抵抗器Ｒ２によって消費することで、整流平滑
回路の出力電圧の上昇を抑制し、ランプが放電開始する
のを防止している。A second embodiment of the present invention will be described with reference to FIG. The lighting device and the lamp of the present invention are connected to a 100 V AC power supply E via a switch with hand illumination.
The resistor R2 is connected to the rectifying and smoothing output stage of the lighting device. Other components are the same as those in FIG. 1 and the performance is the same. It was confirmed that the lamp did not blink when the resistance value of R2 was 1 M ohm or less. By consuming the charging current of the electrolytic capacitor by the resistor R2, an increase in the output voltage of the rectifying and smoothing circuit is suppressed, and the discharge of the lamp is prevented from starting.
【００１３】[0013]
【発明の効果】以上詳述したように本発明によれば、手
元照明付スイッチと組み合わせて使用した場合にも、ラ
ンプが点滅することがなく誤動作のないランプ点灯装置
を提供できる。As described above in detail, according to the present invention, it is possible to provide a lamp lighting device in which the lamp does not blink and does not malfunction even when used in combination with the switch with hand illumination.
【図１】本発明の一実施例を示すブロック回路図。FIG. 1 is a block circuit diagram showing one embodiment of the present invention.
【図２】手元照明付スイッチの回路図。FIG. 2 is a circuit diagram of a switch with hand illumination.
【図３】本発明のスイッチ組み合わせ時の動作説明図。FIG. 3 is an explanatory diagram of an operation when a switch is combined according to the present invention.
【図４】本発明の別の実施例を示すブロック回路図。FIG. 4 is a block circuit diagram showing another embodiment of the present invention.
Ｅ…１００Ｖ交流電源、Ｒ１，Ｒ２，Ｒ３，Ｒ４…抵
抗、ＳＷ…スイッチ、ＮＬ…ネオン放電管、ＺＳ…スイ
ッチオフ時のインピーダンス、ＺＬ…点灯装置のインピ
ーダンス。E: 100 V AC power supply, R1, R2, R3, R4: resistance, SW: switch, NL: neon discharge tube, ZS: impedance when switch is off, ZL: impedance of lighting device.
Claims (2)
整流平滑回路と、整流平滑回路の出力を高周波に変換す
るインバータ回路とにより構成される電源装置におい
て、電源入力段に抵抗器を挿入させたことを特徴とする
ランプ点灯装置。1. A power supply device comprising an AC power supply as an input, a rectifying / smoothing circuit for rectifying / smoothing the AC power, and an inverter circuit for converting an output of the rectifying / smoothing circuit to a high frequency, wherein a resistor is inserted in a power input stage. A lamp lighting device, wherein
整流平滑回路と、整流平滑回路の出力を高周波に変換す
るインバータ回路とにより構成される電源装置におい
て、整流平滑回路の出力段に抵抗器を挿入させたことを
特徴とするランプ点灯装置。2. A power supply device comprising an AC power supply as an input, a rectifying / smoothing circuit for rectifying and smoothing the AC power, and an inverter circuit for converting an output of the rectifying / smoothing circuit to a high frequency. A lamp lighting device, wherein a lamp is inserted.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18946397A JPH1140382A (en) | 1997-07-15 | 1997-07-15 | Lamp lighting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18946397A JPH1140382A (en) | 1997-07-15 | 1997-07-15 | Lamp lighting device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH1140382A true JPH1140382A (en) | 1999-02-12 |
Family
ID=16241699
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP18946397A Pending JPH1140382A (en) | 1997-07-15 | 1997-07-15 | Lamp lighting device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH1140382A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007294235A (en) * | 2006-04-25 | 2007-11-08 | Matsushita Electric Ind Co Ltd | Compact self-ballasted fluorescent lamp, and lighting system |
-
1997
- 1997-07-15 JP JP18946397A patent/JPH1140382A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007294235A (en) * | 2006-04-25 | 2007-11-08 | Matsushita Electric Ind Co Ltd | Compact self-ballasted fluorescent lamp, and lighting system |
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