JPH0356981U - - Google Patents

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Publication number
JPH0356981U
JPH0356981U JP11750989U JP11750989U JPH0356981U JP H0356981 U JPH0356981 U JP H0356981U JP 11750989 U JP11750989 U JP 11750989U JP 11750989 U JP11750989 U JP 11750989U JP H0356981 U JPH0356981 U JP H0356981U
Authority
JP
Japan
Prior art keywords
display
signal
processing circuit
supplied
heating current
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.)
Granted
Application number
JP11750989U
Other languages
Japanese (ja)
Other versions
JPH0731270Y2 (en
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 filed Critical
Priority to JP11750989U priority Critical patent/JPH0731270Y2/en
Publication of JPH0356981U publication Critical patent/JPH0356981U/ja
Application granted granted Critical
Publication of JPH0731270Y2 publication Critical patent/JPH0731270Y2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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  • Control Of Indicators Other Than Cathode Ray Tubes (AREA)

Description

【図面の簡単な説明】[Brief explanation of the drawing]

第１図はこの考案に係る蛍光管式表示装置の一
実施例を示す回路構成図、第２図は第１図に示す
メモリ回路の記憶内容を示すテーブル構成図、第
３図は第１図の動作説明図、第４図および第５図
はそれぞれ蛍光管用昇圧電源の他の例を示す回路
構成図、第６図は従来の蛍光管式表示装置の一例
を示す回路構成図、第７図は第６図の動作説明図
である。 １……蛍光表示管、１ａ……フイラメント電極
、２……フイラメント駆動回路（蛍光管用昇圧電
源）、１０……信号処理回路。 FIG. 1 is a circuit configuration diagram showing an embodiment of the fluorescent tube type display device according to this invention, FIG. 2 is a table configuration diagram showing the stored contents of the memory circuit shown in FIG. 1, and FIG. 4 and 5 are respectively circuit configuration diagrams showing other examples of a boost power source for fluorescent tubes, FIG. 6 is a circuit configuration diagram showing an example of a conventional fluorescent tube type display device, and FIG. 7 is an explanatory diagram of the operation of FIG. 6. 1... Fluorescent display tube, 1a... Filament electrode, 2... Filament drive circuit (step-up power supply for fluorescent tube), 10... Signal processing circuit.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] パルス又は交番状加熱電流を出力するフイラメ
ント駆動回路２と、表示信号を所望の表示輝度に
応じたＰＷＭ調光信号に対応させて出力する信号
処理回路１０と、上記フイラメント駆動回路から
の加熱電流が供給されるフイラメント電極１ａお
よび上記信号処理回路からの表示信号が供給され
る表示電極を有する蛍光表示管１とを備えた蛍光
管式表示装置において、前記信号処理回路１０か
ら出力される前記ＰＷＭ調光信号のパルス幅を前
記フイラメント電極に供給される加熱電流の１周
期に対してほぼ整数倍のパルス幅に設定したこと
を特徴とする蛍光管式表示装置。 A filament drive circuit 2 that outputs a pulsed or alternating heating current, a signal processing circuit 10 that outputs a display signal in correspondence with a PWM dimming signal corresponding to a desired display brightness, and a heating current from the filament drive circuit. In a fluorescent tube type display device comprising a filament electrode 1a to be supplied and a fluorescent display tube 1 having a display electrode to which a display signal from the signal processing circuit is supplied, the PWM adjustment output from the signal processing circuit 10 is provided. A fluorescent tube type display device, characterized in that the pulse width of the optical signal is set to a pulse width that is approximately an integral multiple of one cycle of the heating current supplied to the filament electrode.
JP11750989U 1989-10-05 1989-10-05 Fluorescent tube display Expired - Lifetime JPH0731270Y2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP11750989U JPH0731270Y2 (en) 1989-10-05 1989-10-05 Fluorescent tube display

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11750989U JPH0731270Y2 (en) 1989-10-05 1989-10-05 Fluorescent tube display

Publications (2)

Publication Number Publication Date
JPH0356981U true JPH0356981U (en) 1991-05-31
JPH0731270Y2 JPH0731270Y2 (en) 1995-07-19

Family

ID=31665725

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11750989U Expired - Lifetime JPH0731270Y2 (en) 1989-10-05 1989-10-05 Fluorescent tube display

Country Status (1)

Country Link
JP (1) JPH0731270Y2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004294726A (en) * 2003-03-26 2004-10-21 Sanyo Electric Co Ltd Driving circuit for fluorescent display tube

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004294726A (en) * 2003-03-26 2004-10-21 Sanyo Electric Co Ltd Driving circuit for fluorescent display tube
JP4741786B2 (en) * 2003-03-26 2011-08-10 三洋電機株式会社 Fluorescent display tube drive circuit

Also Published As

Publication number Publication date
JPH0731270Y2 (en) 1995-07-19

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