JPS6484596A - Lighting device for discharge lamp - Google Patents

Lighting device for discharge lamp

Info

Publication number
JPS6484596A
JPS6484596A JP24208387A JP24208387A JPS6484596A JP S6484596 A JPS6484596 A JP S6484596A JP 24208387 A JP24208387 A JP 24208387A JP 24208387 A JP24208387 A JP 24208387A JP S6484596 A JPS6484596 A JP S6484596A
Authority
JP
Japan
Prior art keywords
tube current
discharge lamp
asymmetric
setting
time
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
JP24208387A
Other languages
Japanese (ja)
Other versions
JP2573252B2 (en
Inventor
Yuji Nakabayashi
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Panasonic Electric Works Co Ltd
Original Assignee
Matsushita Electric Works Ltd
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 by Matsushita Electric Works Ltd filed Critical Matsushita Electric Works Ltd
Priority to JP24208387A priority Critical patent/JP2573252B2/en
Publication of JPS6484596A publication Critical patent/JPS6484596A/en
Application granted granted Critical
Publication of JP2573252B2 publication Critical patent/JP2573252B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Landscapes

  • Discharge-Lamp Control Circuits And Pulse- Feed Circuits (AREA)

Abstract

PURPOSE:To prevent occurrence of moving stripes at the time of dimming operation in an inverter type discharge lamp using DC current without restless section by providing a device with a means for setting a tube current asymmetric. CONSTITUTION:A variable inductance L1 for controlling light is provided for the secondary side of an oscillation transformer OT, and a means 4 for setting a tube current asymmetric comprising a serial circuit composed of a diode D and an impedance Z is provided in parallel with a discharge lamp 3. A switch S2 is connected serially and is put ON interlocked with an inductance L1 to operate a means 4 when tube current is less to be a specified light control ratio. When tube current is set to be asymmetric, continuation of moving stripes can be prevented. The lighting efficiency of the lamp 3 is high, but in a normal lighting state, the means is operated only at the time of dimming because circuit loss increases to deteriorate the service life.
JP24208387A 1987-09-26 1987-09-26 Discharge lamp lighting device Expired - Lifetime JP2573252B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP24208387A JP2573252B2 (en) 1987-09-26 1987-09-26 Discharge lamp lighting device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP24208387A JP2573252B2 (en) 1987-09-26 1987-09-26 Discharge lamp lighting device

Publications (2)

Publication Number Publication Date
JPS6484596A true JPS6484596A (en) 1989-03-29
JP2573252B2 JP2573252B2 (en) 1997-01-22

Family

ID=17084038

Family Applications (1)

Application Number Title Priority Date Filing Date
JP24208387A Expired - Lifetime JP2573252B2 (en) 1987-09-26 1987-09-26 Discharge lamp lighting device

Country Status (1)

Country Link
JP (1) JP2573252B2 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1999007190A1 (en) * 1997-07-29 1999-02-11 Indigitale Limited Variable high frequency lamp controllers and systems
KR100402432B1 (en) * 1996-09-25 2004-03-20 마사카즈 우시지마 Inverter circuit for discharging tube
JP2012248410A (en) * 2011-05-27 2012-12-13 Phoenix Denki Kk Led lighting circuit and led lamp comprising the same

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPWO2013038964A1 (en) 2011-09-13 2015-03-26 電気化学工業株式会社 Clad material for LED light-emitting element holding substrate and manufacturing method thereof

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100402432B1 (en) * 1996-09-25 2004-03-20 마사카즈 우시지마 Inverter circuit for discharging tube
WO1999007190A1 (en) * 1997-07-29 1999-02-11 Indigitale Limited Variable high frequency lamp controllers and systems
US6229270B1 (en) * 1997-07-29 2001-05-08 Indigitale Limited Variable high frequency lamp controllers and systems
AU737663B2 (en) * 1997-07-29 2001-08-30 Direct Message (Uk) Limited Variable high frequency lamp controllers and systems
JP2012248410A (en) * 2011-05-27 2012-12-13 Phoenix Denki Kk Led lighting circuit and led lamp comprising the same

Also Published As

Publication number Publication date
JP2573252B2 (en) 1997-01-22

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Legal Events

Date Code Title Description
EXPY Cancellation because of completion of term