JPH0435195U - - Google Patents

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Publication number
JPH0435195U
JPH0435195U JP7793090U JP7793090U JPH0435195U JP H0435195 U JPH0435195 U JP H0435195U JP 7793090 U JP7793090 U JP 7793090U JP 7793090 U JP7793090 U JP 7793090U JP H0435195 U JPH0435195 U JP H0435195U
Authority
JP
Japan
Prior art keywords
circuit
led display
dimming
led
pulse width
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
Application number
JP7793090U
Other languages
Japanese (ja)
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 JP7793090U priority Critical patent/JPH0435195U/ja
Publication of JPH0435195U publication Critical patent/JPH0435195U/ja
Pending legal-status Critical Current

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  • Devices For Indicating Variable Information By Combining Individual Elements (AREA)

Description

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

第１図は本考案の調光機能付ＬＥＤ表示装置の
説明に供する図、第２図乃至第５図は第１図の説
明に供する図、第６図は従来の調光機能付ＬＥＤ
表示装置のブロツク系統図、第７図乃至第８図は
第６図の説明に供する図である。 １……ＬＥＤマトリクス回路、２……駆動回路
、４０……ダイナミツク点灯制御回路、６……自
動調光機能（回路手段）、７……手動調光機能（
回路手段）。 FIG. 1 is a diagram for explaining the LED display device with dimming function of the present invention, FIGS. 2 to 5 are diagrams for explaining FIG. 1, and FIG. 6 is a diagram for explaining the conventional LED display device with dimming function.
The block system diagrams of the display device, FIGS. 7 and 8, are diagrams for explaining FIG. 6. 1... LED matrix circuit, 2... Drive circuit, 40... Dynamic lighting control circuit, 6... Automatic dimming function (circuit means), 7... Manual dimming function (
circuit means).

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 駆動回路を用いてＬＥＤ表示部を駆動する構成
の調光機能付ＬＥＤ表示装置において、パルス幅
制御によるＬＥＤ表示部のダイナミツク点灯を制
御するダイナミツク点灯制御回路と、周囲の明る
さを検出する入力要素及び供給電源電圧を前記入
力要素からの信号で所定範囲に可変して前記駆動
回路に出力するＬＥＤ駆動用可変電圧電源回路か
ら成る自動調光回路と、アツプ／ダウンスイツチ
を具備する手動調光信号出力回路及び前記アツプ
／ダウンスイツチのオン／オフ状態をリアルタイ
ムで検出してそのスイツチ状態に基づき前記ＬＥ
Ｄ表示部の点灯パルスの出力パルス幅を可変して
前記駆動回路に出力するＬＥＤ駆動用可変パルス
幅制御回路から成る手動調光回路と、を具備した
ことを特徴とする調光機能付ＬＥＤ表示装置。 In an LED display device with a dimming function configured to drive an LED display section using a drive circuit, a dynamic lighting control circuit that controls dynamic lighting of the LED display section by pulse width control and an input element that detects ambient brightness are provided. and an automatic dimming circuit comprising a variable voltage power supply circuit for driving an LED, which varies the supply power voltage within a predetermined range with a signal from the input element and outputs it to the drive circuit, and a manual dimming signal comprising an up/down switch. The on/off states of the output circuit and the up/down switch are detected in real time, and the LE is controlled based on the switch state.
An LED display with a dimming function, comprising: a manual dimming circuit comprising a variable pulse width control circuit for driving an LED that varies the output pulse width of a lighting pulse of a D display section and outputs it to the drive circuit. Device.
JP7793090U 1990-07-23 1990-07-23 Pending JPH0435195U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7793090U JPH0435195U (en) 1990-07-23 1990-07-23

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7793090U JPH0435195U (en) 1990-07-23 1990-07-23

Publications (1)

Publication Number Publication Date
JPH0435195U true JPH0435195U (en) 1992-03-24

Family

ID=31620756

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7793090U Pending JPH0435195U (en) 1990-07-23 1990-07-23

Country Status (1)

Country Link
JP (1) JPH0435195U (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06318050A (en) * 1993-05-06 1994-11-15 Fujitsu Ten Ltd Method for adjusting luminance of light emitting display, and image display device with luminance adjusting function
JP2005208259A (en) * 2004-01-21 2005-08-04 Optrex Corp Driving device and driving method for organic el display device
JP2008107737A (en) * 2006-10-27 2008-05-08 Pioneer Electronic Corp Apparatus for driving display panel and method for adjusting luminance of display panel
JP2019086770A (en) * 2017-11-02 2019-06-06 シナプティクス インコーポレイテッド Display driver, display device, and brightness control method

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06318050A (en) * 1993-05-06 1994-11-15 Fujitsu Ten Ltd Method for adjusting luminance of light emitting display, and image display device with luminance adjusting function
JP2005208259A (en) * 2004-01-21 2005-08-04 Optrex Corp Driving device and driving method for organic el display device
JP2008107737A (en) * 2006-10-27 2008-05-08 Pioneer Electronic Corp Apparatus for driving display panel and method for adjusting luminance of display panel
JP2019086770A (en) * 2017-11-02 2019-06-06 シナプティクス インコーポレイテッド Display driver, display device, and brightness control method

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