JPS6482493A - Lighting device for discharge lamp - Google Patents

Lighting device for discharge lamp

Info

Publication number
JPS6482493A
JPS6482493A JP24034387A JP24034387A JPS6482493A JP S6482493 A JPS6482493 A JP S6482493A JP 24034387 A JP24034387 A JP 24034387A JP 24034387 A JP24034387 A JP 24034387A JP S6482493 A JPS6482493 A JP S6482493A
Authority
JP
Japan
Prior art keywords
discharge lamp
turn
output
duty
inverter
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
JP24034387A
Other languages
Japanese (ja)
Other versions
JP2803080B2 (en
Inventor
Tsutomu Kakiya
Kenichi Inui
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.)
Toshiba Electric Equipment Corp
Original Assignee
Toshiba Electric Equipment Corp
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=17058073&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=JPS6482493(A) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Toshiba Electric Equipment Corp filed Critical Toshiba Electric Equipment Corp
Priority to JP62240343A priority Critical patent/JP2803080B2/en
Publication of JPS6482493A publication Critical patent/JPS6482493A/en
Application granted granted Critical
Publication of JP2803080B2 publication Critical patent/JP2803080B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Abstract

PURPOSE:To turn on or off and dim a discharge lamp by changing the output of an inverter in response to the duty of the PWM signal to dim or turn on the discharge lamp and stopping the switching signal output of a driving device to turn off the discharge lamp when the PWM signal is a continuous signal. CONSTITUTION:The switching frequency of switching devices 2 and 3 of an inverter 1 is changed in response to the duty of the PWM signal to change the output of the inverter 1 and dim and turn on a discharge lamp 7. When the PWM signal is continuous, i.e., the on duty is nearly 100%, the switching signal output of a driving device 8 is stopped to stop the output of the switching signal, and the inverter 1 is made inoperative to turn off the discharge lamp 7. The discharge lamp can be thereby turned on or off and dimmed by changing the duty of the PWM signal.
JP62240343A 1987-09-25 1987-09-25 Discharge lamp lighting device Expired - Lifetime JP2803080B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62240343A JP2803080B2 (en) 1987-09-25 1987-09-25 Discharge lamp lighting device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62240343A JP2803080B2 (en) 1987-09-25 1987-09-25 Discharge lamp lighting device

Related Child Applications (1)

Application Number Title Priority Date Filing Date
JP29730696A Division JP3029015B2 (en) 1996-10-19 1996-10-19 Discharge lamp lighting device

Publications (2)

Publication Number Publication Date
JPS6482493A true JPS6482493A (en) 1989-03-28
JP2803080B2 JP2803080B2 (en) 1998-09-24

Family

ID=17058073

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62240343A Expired - Lifetime JP2803080B2 (en) 1987-09-25 1987-09-25 Discharge lamp lighting device

Country Status (1)

Country Link
JP (1) JP2803080B2 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03156895A (en) * 1989-10-12 1991-07-04 Honeywell Inc Fluorescent lamp dimmer
KR100320235B1 (en) * 1999-09-28 2002-01-10 이원종 Method for Softstop control in electronic stabilizer

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5683801U (en) * 1979-11-29 1981-07-06
JPS6139497A (en) * 1984-07-31 1986-02-25 東芝ライテック株式会社 Discharge lamp dimming system

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5683801U (en) * 1979-11-29 1981-07-06
JPS6139497A (en) * 1984-07-31 1986-02-25 東芝ライテック株式会社 Discharge lamp dimming system

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03156895A (en) * 1989-10-12 1991-07-04 Honeywell Inc Fluorescent lamp dimmer
KR100320235B1 (en) * 1999-09-28 2002-01-10 이원종 Method for Softstop control in electronic stabilizer

Also Published As

Publication number Publication date
JP2803080B2 (en) 1998-09-24

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