JPH0279600U - - Google Patents
Info
- Publication number
- JPH0279600U JPH0279600U JP5944589U JP5944589U JPH0279600U JP H0279600 U JPH0279600 U JP H0279600U JP 5944589 U JP5944589 U JP 5944589U JP 5944589 U JP5944589 U JP 5944589U JP H0279600 U JPH0279600 U JP H0279600U
- Authority
- JP
- Japan
- Prior art keywords
- fluorescent tube
- cathode fluorescent
- hot cathode
- dimming
- filament
- 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
- 238000010438 heat treatment Methods 0.000 claims description 9
- 230000007274 generation of a signal involved in cell-cell signaling Effects 0.000 claims description 3
- 230000003247 decreasing effect Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 4
- 238000005286 illumination Methods 0.000 description 1
Landscapes
- Discharge-Lamp Control Circuits And Pulse- Feed Circuits (AREA)
Description
第１図は本考案の請求項１の調光付き熱陰極蛍
光管照明装置の構成を示すブロツク線図、第２図
は第１図の動作の説明に供するタイムチヤート、
第３図は本考案の請求項２の調光付き熱陰極蛍光
管照明装置の構成を示すブロツク線図、第４図は
第３図の説明に供する図、第５図は第３図、第４
図の動作の説明に供するタイムチヤート、第６図
は従来の調光付き熱陰極蛍光管照明装置の構成を
示すブロツク線図である。
１……熱陰極蛍光管（ランプ）、２……自励型
インバータ（インバータ）、３，３０……調光制
御信号発生回路、５……フイラメント加熱回路、
６……フイラメント加熱制御用スイツチ回路、７
……最適フイラメント加熱補正回路、８……イン
バータ電圧調整回路。
FIG. 1 is a block diagram showing the configuration of a dimming hot cathode fluorescent tube lighting device according to claim 1 of the present invention, and FIG. 2 is a time chart for explaining the operation of FIG. 1.
FIG. 3 is a block diagram showing the configuration of a dimming hot cathode fluorescent tube lighting device according to claim 2 of the present invention, FIG. 4 is a diagram for explaining FIG. 3, and FIG. 4
FIG. 6 is a time chart for explaining the operation shown in FIG. 6, and FIG. 6 is a block diagram showing the configuration of a conventional dimming-equipped hot cathode fluorescent tube illumination device. 1... hot cathode fluorescent tube (lamp), 2... self-excited inverter (inverter), 3, 30... dimming control signal generation circuit, 5... filament heating circuit,
6...Switch circuit for filament heating control, 7
...Optimal filament heating correction circuit, 8...Inverter voltage adjustment circuit.
Claims (1)
せる調光を調光制御信号発生回路からの調光制御
信号で行う調光付き熱陰極蛍光管照明装置におい
て、電源端子に直流電源が供給される自励型イン
バータのインバータ出力が前記熱陰極蛍光管のフ
イラメントの片側一方の両極にともに接続され、
前記熱陰極蛍光管のフイラメントの片側他方の両
極ともに前記調光制御信号により開閉動作するス
イツチ機構を有するフイラメント加熱制御用スイ
ツチ回路が接続され、前記スイツチ機構を前記調
光制御信号で開閉して前記熱陰極蛍光管の調光を
行うことを特徴とする調光付き熱陰極蛍光管照明
装置。 (2) 請求項１の調光付き熱陰極蛍光管照明装置
において、自励型インバータのインバータ出力が
熱陰極蛍光管のフイラメントの片側一方の両極に
ともに接続され、前記熱陰極蛍光管のフイラメン
トの片側他方の両極ともに調光制御信号により開
閉動作するスイツチ機構を有するフイラメント加
熱制御用スイツチ回路が接続され、前記スイツチ
機構を前記調光制御信号で開閉して前記熱陰極蛍
光管の調光を行うにあたつて、調光設定信号を入
力すると同時に調光制御信号発生回路との間で信
号の授受を行い、前記熱陰極蛍光管の点灯・消灯
のデユーテイサイクルに同期して低デユーテイ時
にはインバータ電圧を上げ高デユーテイ時には下
げることでフイラメント電流を調整してフイラメ
ント加熱を最適化するようなデユーテイ対最適フ
イラメント加熱量の関数を内臓した最適フイラメ
ント加熱補正回路、及び前記直流電源と前記自励
型インバータの電源端子との間に前記最適フイラ
メント加熱補正回路からの信号により前記インバ
ータ電圧を調整するインバータ電圧調整回路を設
けて、全調光範囲でフイラメント加熱を行うよう
にしたことを特徴とする調光付き熱陰極蛍光管照
明装置。[Scope of Claim for Utility Model Registration] (1) A dimmable hot cathode fluorescent tube lighting device that uses a dimming control signal from a dimming control signal generation circuit to perform dimming that changes the on/off ratio of the hot cathode fluorescent tube. Inverter outputs of a self-excited inverter whose power terminals are supplied with DC power are both connected to both poles of one side of the filament of the hot cathode fluorescent tube,
A filament heating control switch circuit having a switch mechanism that opens and closes in response to the dimming control signal is connected to both poles on one side and the other of the filament of the hot cathode fluorescent tube, and opens and closes the switch mechanism in response to the dimming control signal. A dimming hot cathode fluorescent tube lighting device characterized by controlling the brightness of a hot cathode fluorescent tube. (2) In the dimming hot cathode fluorescent tube lighting device according to claim 1, the inverter output of the self-excited inverter is connected to both poles on one side of the filament of the hot cathode fluorescent tube, and A filament heating control switch circuit having a switch mechanism that opens and closes in response to a dimming control signal is connected to both poles on one side and the other, and the switch mechanism is opened and closed in response to the dimming control signal to dim the hot cathode fluorescent tube. At the same time as inputting the dimming setting signal, a signal is exchanged with the dimming control signal generation circuit, and at low duty in synchronization with the duty cycle of turning on and off the hot cathode fluorescent tube. An optimal filament heating correction circuit incorporating a function of duty versus optimal filament heating amount that optimizes filament heating by adjusting the filament current by increasing the inverter voltage and decreasing it at high duty, and the DC power source and the self-excited type. An inverter voltage adjustment circuit that adjusts the inverter voltage based on a signal from the optimal filament heating correction circuit is provided between the power supply terminal of the inverter and the filament is heated in the entire dimming range. Hot cathode fluorescent tube lighting device with light.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5944589U JPH0279600U (en) | 1988-08-31 | 1989-05-23 |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11453788 | 1988-08-31 | ||
| JP5944589U JPH0279600U (en) | 1988-08-31 | 1989-05-23 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0279600U true JPH0279600U (en) | 1990-06-19 |
Family
ID=31718219
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5944589U Pending JPH0279600U (en) | 1988-08-31 | 1989-05-23 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0279600U (en) |
-
1989
- 1989-05-23 JP JP5944589U patent/JPH0279600U/ja active Pending
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