JPH0241398U - - Google Patents
Info
- Publication number
- JPH0241398U JPH0241398U JP11886488U JP11886488U JPH0241398U JP H0241398 U JPH0241398 U JP H0241398U JP 11886488 U JP11886488 U JP 11886488U JP 11886488 U JP11886488 U JP 11886488U JP H0241398 U JPH0241398 U JP H0241398U
- Authority
- JP
- Japan
- Prior art keywords
- circuit
- low
- pressure discharge
- discharge lamp
- 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.)
- Pending
Links
- 238000010586 diagram Methods 0.000 description 1
Landscapes
- Circuit Arrangements For Discharge Lamps (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図は主要な構成要素の
動作を示すタイムチヤートである。
ＤＣ…直流電源、ＳＷ…電源スイツチ、Ｆｕ…
ヒユーズ、１０…高周波点灯回路、２０…予熱回
路、３０…接続状態切換回路、４０…制御回路、
５０…保護回路、６０…停止回路、Ｌ…低圧放電
ランプ、Ｆ…フイラメント電極、１１…タイマー
回路、Ａ，Ｂ…接点、Ｒｙ１１，Ｒｙ１２…リレ
ーコイル、ｒｙ１１，ｒｙ１２…リレー接点。
FIG. 1 is an explanatory diagram showing an example of a low-pressure discharge lamp lighting device according to the present invention, and FIG. 2 is a time chart showing the operation of the main components. DC...DC power supply, SW...power switch, Fu...
Fuse, 10... High frequency lighting circuit, 20... Preheating circuit, 30... Connection state switching circuit, 40... Control circuit,
50... Protection circuit, 60... Stop circuit, L... Low pressure discharge lamp, F... Filament electrode, 11... Timer circuit, A, B... Contact, Ry11, Ry12... Relay coil, ry11, ry12... Relay contact.
Claims (1)
放電ランプを２本以上同時に点灯するための低圧
放電ランプ点灯装置において、 前記低圧放電ランプのフイラメント電極に予熱
電流を流すための予熱回路と、 前記低圧放電ランプに高周波電力を供給するた
めの高周波点灯回路と、 点灯起動時には前記高周波点灯回路を切離して
すべての低圧放電ランプのフイラメント電極を前
記予熱回路に対して直列に接続した状態に切換え
、予熱時間経過後には前記予熱回路を切離してす
べての低圧放電ランプを前記高周波点灯回路に対
して並列に接続した状態に切換える接続状態切換
回路とを備えてなることを特徴とする低圧放電ラ
ンプ点灯装置。 (2) 接続状態切換回路がリレーコイルおよびリ
レー接点を含み、タイマー回路により動作が制御
されることを特徴とする請求項１に記載の低圧放
電ランプ点灯回路。 (3) 高周波点灯回路の制御回路が、低圧放電ラ
ンプの過電圧を防止する保護回路と、点灯起動時
にはこの保護回路の動作を停止させる停止回路と
を備えていることを特徴とする請求項１または２
に記載の低圧放電ランプ点灯装置。[Claims for Utility Model Registration] (1) In a low-pressure discharge lamp lighting device for simultaneously lighting two or more low-pressure discharge lamps each having a filament electrode at both ends, a preheating current is passed through the filament electrode of the low-pressure discharge lamp. a high-frequency lighting circuit for supplying high-frequency power to the low-pressure discharge lamp; and a high-frequency lighting circuit for supplying high-frequency power to the low-pressure discharge lamp, and when starting lighting, the high-frequency lighting circuit is disconnected and the filament electrodes of all the low-pressure discharge lamps are connected in series with the preheating circuit. and a connection state switching circuit that switches to a connected state and, after a preheating time has elapsed, disconnects the preheating circuit and switches all the low pressure discharge lamps to a state where they are connected in parallel to the high frequency lighting circuit. Low pressure discharge lamp lighting device. (2) The low-pressure discharge lamp lighting circuit according to claim 1, wherein the connection state switching circuit includes a relay coil and a relay contact, and its operation is controlled by a timer circuit. (3) The control circuit of the high-frequency lighting circuit includes a protection circuit that prevents overvoltage of the low-pressure discharge lamp, and a stop circuit that stops the operation of the protection circuit when starting the lighting. 2
The low-pressure discharge lamp lighting device described in .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11886488U JPH0241398U (en) | 1988-09-12 | 1988-09-12 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11886488U JPH0241398U (en) | 1988-09-12 | 1988-09-12 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0241398U true JPH0241398U (en) | 1990-03-22 |
Family
ID=31363586
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11886488U Pending JPH0241398U (en) | 1988-09-12 | 1988-09-12 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0241398U (en) |
-
1988
- 1988-09-12 JP JP11886488U patent/JPH0241398U/ja active Pending
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