JPS63164045U - - Google Patents

Info

Publication number
JPS63164045U
JPS63164045U JP8484587U JP8484587U JPS63164045U JP S63164045 U JPS63164045 U JP S63164045U JP 8484587 U JP8484587 U JP 8484587U JP 8484587 U JP8484587 U JP 8484587U JP S63164045 U JPS63164045 U JP S63164045U
Authority
JP
Japan
Prior art keywords
night
day
switching element
constant voltage
display means
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
JP8484587U
Other languages
Japanese (ja)
Other versions
JPH0122092Y2 (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 JP1987084845U priority Critical patent/JPH0122092Y2/ja
Publication of JPS63164045U publication Critical patent/JPS63164045U/ja
Application granted granted Critical
Publication of JPH0122092Y2 publication Critical patent/JPH0122092Y2/ja
Expired legal-status Critical Current

Links

Landscapes

  • Arrangements Of Lighting Devices For Vehicle Interiors, Mounting And Supporting Thereof, Circuits Therefore (AREA)
  • Details Of Measuring Devices (AREA)

Description

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

第１図は本考案の一実施例を示す表示器の調光
回路の回路図、第２図Ａ，Ｂは第１図に示す回路
のＡ点の電圧波形図、第３図は第１図に示す回路
の特性図である。 ５……判定回路、７……表示手段、８……波形
発生部、１０……電力調整回路。 Fig. 1 is a circuit diagram of a dimming circuit of a display device showing one embodiment of the present invention, Fig. 2 A and B are voltage waveform diagrams at point A of the circuit shown in Fig. 1, and Fig. 3 is a diagram of the voltage waveform at point A of the circuit shown in Fig. 1. FIG. 3 is a characteristic diagram of the circuit shown in FIG. 5... Judgment circuit, 7... Display means, 8... Waveform generator, 10... Power adjustment circuit.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 出力パルスのデユーテイ比を任意に選択できる
波形発生部８と、昼夜を区別して検出する判定回
路５と、該判定回路からの昼夜検出信号に基づい
て上記波形発生部８からの出力信号のデユーテイ
比に対する電力比を夜間時において昼間時よりも
小さくして出力する電力調整回路１０と、該電力
調整回路からの信号に基づいた明るさで点灯表示
する表示手段７とを備え、前記電力調整回路１０
は、前記波形発生部８からの出力パルスを受けて
オン・オフするスイツチング素子ＴＲ５と、該ス
イツチング素子及び前記表示手段７に直列に接続
されて、前記判定回路５から供給される昼夜検出
信号が夜を示し、かつ前記スイツチング素子ＴＲ
５がオン・オフしているとき、前記表示手段７に
定電圧の電力をパルス状に供給し、また前記昼夜
検出信号が昼を示し、かつ前記スイツチング素子
ＴＲ５がオン・オフしているとき、前記表示手段
７に所定の定電圧の電力とパルス状の定電圧の電
力とを重畳して供給する定電圧回路Ｄ１，Ｄ２，
７ＴＲ２，ＴＲ３，１とからなることを特徴とす
る表示器の調光回路。 A waveform generator 8 that can arbitrarily select the duty ratio of the output pulse, a determination circuit 5 that distinguishes and detects day and night, and a duty ratio of the output signal from the waveform generator 8 based on the day/night detection signal from the determination circuit. The power adjustment circuit 10 includes a power adjustment circuit 10 that outputs a power ratio smaller than that of the daytime at night, and a display means 7 that lights up and displays a display with a brightness based on a signal from the power adjustment circuit.
is a switching element TR 5 that turns on and off in response to an output pulse from the waveform generator 8, and a day/night detection signal connected in series to the switching element and the display means 7, and supplied from the determination circuit 5. indicates night, and the switching element TR
When TR 5 is on/off, constant voltage power is supplied to the display means 7 in a pulsed manner, and when the day/night detection signal indicates daytime and the switching element TR 5 is on/off. , constant voltage circuits D 1 , D 2 that supply the display means 7 with a predetermined constant voltage power and a pulsed constant voltage power in a superimposed manner;
7. A dimming circuit for a display device, comprising: 7TR 2 , TR 3 , and 1.
JP1987084845U 1987-05-30 1987-05-30 Expired JPH0122092Y2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1987084845U JPH0122092Y2 (en) 1987-05-30 1987-05-30

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1987084845U JPH0122092Y2 (en) 1987-05-30 1987-05-30

Publications (2)

Publication Number Publication Date
JPS63164045U true JPS63164045U (en) 1988-10-26
JPH0122092Y2 JPH0122092Y2 (en) 1989-06-29

Family

ID=30939710

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1987084845U Expired JPH0122092Y2 (en) 1987-05-30 1987-05-30

Country Status (1)

Country Link
JP (1) JPH0122092Y2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008105636A (en) * 2006-10-27 2008-05-08 Omron Corp Illumination controlling device and method

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5537089A (en) * 1978-09-07 1980-03-14 Sanyo Electric Co Ltd Automatic treatment device for automatic answering telephone set
JPS56138310U (en) * 1980-03-19 1981-10-20
JPS6316975U (en) * 1986-07-21 1988-02-04

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5537089A (en) * 1978-09-07 1980-03-14 Sanyo Electric Co Ltd Automatic treatment device for automatic answering telephone set
JPS56138310U (en) * 1980-03-19 1981-10-20
JPS6316975U (en) * 1986-07-21 1988-02-04

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008105636A (en) * 2006-10-27 2008-05-08 Omron Corp Illumination controlling device and method
JP4586128B2 (en) * 2006-10-27 2010-11-24 オムロンオートモーティブエレクトロニクス株式会社 Lighting control apparatus and method

Also Published As

Publication number Publication date
JPH0122092Y2 (en) 1989-06-29

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