JPH0249098U - - Google Patents
Info
- Publication number
- JPH0249098U JPH0249098U JP12728988U JP12728988U JPH0249098U JP H0249098 U JPH0249098 U JP H0249098U JP 12728988 U JP12728988 U JP 12728988U JP 12728988 U JP12728988 U JP 12728988U JP H0249098 U JPH0249098 U JP H0249098U
- Authority
- JP
- Japan
- Prior art keywords
- preheating
- circuit
- impedance state
- low
- discharge lamp
- 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
- 238000006243 chemical reaction Methods 0.000 claims description 5
- 238000011144 upstream manufacturing Methods 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 3
Landscapes
- Circuit Arrangements For Discharge Lamps (AREA)
- Apparatus For Disinfection Or Sterilisation (AREA)
Description
第１図は本考案に係る低圧放電ランプ点灯装置
の一例を示す説明図、第２図ａおよびｂはそれぞ
れ共振回路のインピーダンス変換機能の一例を示
す説明図、第３図〜第７図はそれぞれ本考案に係
る低圧放電ランプ点灯装置の他の例を示す説明図
である。
ＤＣ……直流電源、ＳＷ……電源スイツチ、１
０……高周波点灯回路、１１……発振部、Ｔ……
高周波トランス、２０……放電回路、３０……予
熱回路、５０……共振回路、５３……インピーダ
ンス変換機能、６０……共振回路、６３……イン
ピーダンス変換機能、Ｌ……低圧放電ランプ、Ｆ
……フイラメント電極。
FIG. 1 is an explanatory diagram showing an example of a low-pressure discharge lamp lighting device according to the present invention, FIGS. 2 a and b are explanatory diagrams each showing an example of the impedance conversion function of a resonant circuit, and FIGS. FIG. 7 is an explanatory diagram showing another example of the low-pressure discharge lamp lighting device according to the present invention. DC...Direct current power supply, SW...Power switch, 1
0... High frequency lighting circuit, 11... Oscillator section, T...
High frequency transformer, 20...Discharge circuit, 30...Preheating circuit, 50...Resonance circuit, 53...Impedance conversion function, 60...Resonance circuit, 63...Impedance conversion function, L...Low pressure discharge lamp, F
...Filament electrode.
Claims (1)
放電ランプを点灯するための低圧放電ランプ点灯
装置において、 高周波トランスを含み、出力周波数が一定の高
周波点灯回路と、 前記高周波トランスのメイン出力端子間に接続
された、低圧放電ランプを放電させて定常点灯さ
せる放電回路と、 共振回路を有し、前記高周波トランスのサブ出
力端子間に接続された、少なくとも一方のフイラ
メント電極に予熱電流を流す予熱回路と、 前記予熱回路の共振回路は、インピーダンス変
換機能を有し、点灯起動時にはフイラメント電極
に予熱電流を流す第１インピーダンス状態が選択
され、予熱時間経過後にはフイラメント電極に予
熱電流を実質上流さない第２インピーダンス状態
が選択されることを特徴とする低圧放電ランプ点
灯装置。 (2) 放電回路が共振回路を有し、当該共振回路
は、インピーダンス変換機能を有し、点灯起動時
にはフイラメント電極間に放電電流を実質上流さ
ない第１インピーダンス状態が選択され、予熱時
間経過後にはフイラメント電極間に放電電流を流
す第２インピーダンス状態が選択されることを特
徴とする請求項１に記載の低圧放電ランプ点灯装
置。[Claims for Utility Model Registration] (1) A low-pressure discharge lamp lighting device for lighting a low-pressure discharge lamp comprising filament electrodes at both ends, comprising: a high-frequency lighting circuit including a high-frequency transformer and having a constant output frequency; at least one filament electrode, which has a discharge circuit connected between the main output terminals of the high-frequency transformer and which discharges a low-pressure discharge lamp and lights it steadily; and a resonant circuit, and which is connected between the sub-output terminals of the high-frequency transformer. A preheating circuit that flows a preheating current to the filament electrode, and a resonant circuit of the preheating circuit have an impedance conversion function, and a first impedance state that flows a preheating current to the filament electrode is selected at the time of lighting startup, and a first impedance state that flows the preheating current to the filament electrode after the preheating time has elapsed. A low-pressure discharge lamp lighting device characterized in that a second impedance state is selected in which the preheating current does not flow substantially upstream. (2) The discharge circuit has a resonant circuit, and the resonant circuit has an impedance conversion function, and at the time of lighting start-up, a first impedance state in which the discharge current does not flow substantially between the filament electrodes is selected, and after the preheating time has elapsed, the first impedance state is selected. 2. The low-pressure discharge lamp lighting device according to claim 1, wherein a second impedance state is selected in which a discharge current flows between the filament electrodes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12728988U JPH0249098U (en) | 1988-09-30 | 1988-09-30 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12728988U JPH0249098U (en) | 1988-09-30 | 1988-09-30 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0249098U true JPH0249098U (en) | 1990-04-05 |
Family
ID=31379587
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12728988U Pending JPH0249098U (en) | 1988-09-30 | 1988-09-30 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0249098U (en) |
-
1988
- 1988-09-30 JP JP12728988U patent/JPH0249098U/ja active Pending
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