JPS61150389U - - Google Patents

Info

Publication number
JPS61150389U
JPS61150389U JP3443685U JP3443685U JPS61150389U JP S61150389 U JPS61150389 U JP S61150389U JP 3443685 U JP3443685 U JP 3443685U JP 3443685 U JP3443685 U JP 3443685U JP S61150389 U JPS61150389 U JP S61150389U
Authority
JP
Japan
Prior art keywords
circuit
discharge lamp
backlighting
inverter
switching
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
JP3443685U
Other languages
Japanese (ja)
Other versions
JPH0132059Y2 (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 JP3443685U priority Critical patent/JPH0132059Y2/ja
Publication of JPS61150389U publication Critical patent/JPS61150389U/ja
Application granted granted Critical
Publication of JPH0132059Y2 publication Critical patent/JPH0132059Y2/ja
Expired legal-status Critical Current

Links

Landscapes

  • Liquid Crystal Display Device Control (AREA)
  • Control Of Indicators Other Than Cathode Ray Tubes (AREA)
  • Illuminated Signs And Luminous Advertising (AREA)
  • 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図はこの考案装置の回路図、第２図はバツ
ク照明の切換時の照度特性図である。 １：放電灯、２：白熱電球、３：切換スイツチ
、４：インバータ回路、５：スイツチング回路、
６：充電回路。 FIG. 1 is a circuit diagram of this invented device, and FIG. 2 is an illuminance characteristic diagram when switching back illumination. 1: discharge lamp, 2: incandescent light bulb, 3: changeover switch, 4: inverter circuit, 5: switching circuit,
6: Charging circuit.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 液晶によるデイスプレイ等のバツク照明として
放電灯と白熱電球とを備え、切換スイツチにより
昼間時は放電灯を点灯し、夜間は白熱電球に切換
えるようにしたバツク照明の切換え装置において
、前記放電灯を駆動するインバータ回路と、この
インバータ回路に直列に接続したスイツチング回
路と、前記切換スイツチを白熱電球側に切換えた
際に放電し前記スイツチング回路を一定時間オン
状態に維持させその後前記スイツチング回路をオ
フとしインバータ回路の駆動を停止させて放電灯
を消灯させる充電回路とを備えたバツク照明の切
換え装置。 In a switching device for backlighting, which is equipped with a discharge lamp and an incandescent bulb as backlighting for a liquid crystal display, etc., and is configured to turn on the discharge lamp during the daytime and switch to the incandescent bulb at night using a changeover switch, the discharge lamp is driven. an inverter circuit connected in series to the inverter circuit; and a switching circuit connected in series to the inverter circuit, which discharges when the changeover switch is switched to the incandescent light bulb side, keeps the switching circuit on for a certain period of time, and then turns off the switching circuit and switches the inverter off. A switching device for backlighting equipped with a charging circuit that stops driving the circuit and turns off the discharge lamp.
JP3443685U 1985-03-11 1985-03-11 Expired JPH0132059Y2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP3443685U JPH0132059Y2 (en) 1985-03-11 1985-03-11

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3443685U JPH0132059Y2 (en) 1985-03-11 1985-03-11

Publications (2)

Publication Number Publication Date
JPS61150389U true JPS61150389U (en) 1986-09-17
JPH0132059Y2 JPH0132059Y2 (en) 1989-10-02

Family

ID=30537802

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3443685U Expired JPH0132059Y2 (en) 1985-03-11 1985-03-11

Country Status (1)

Country Link
JP (1) JPH0132059Y2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6341190U (en) * 1986-09-04 1988-03-17

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6341190U (en) * 1986-09-04 1988-03-17

Also Published As

Publication number Publication date
JPH0132059Y2 (en) 1989-10-02

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