EP2434844A3 - Lighting device, illumination fixture, and illumination system - Google Patents

Lighting device, illumination fixture, and illumination system Download PDF

Info

Publication number
EP2434844A3
EP2434844A3 EP11181655A EP11181655A EP2434844A3 EP 2434844 A3 EP2434844 A3 EP 2434844A3 EP 11181655 A EP11181655 A EP 11181655A EP 11181655 A EP11181655 A EP 11181655A EP 2434844 A3 EP2434844 A3 EP 2434844A3
Authority
EP
European Patent Office
Prior art keywords
power
value
setting value
discharge lamp
power setting
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
EP11181655A
Other languages
German (de)
French (fr)
Other versions
EP2434844B1 (en
EP2434844A2 (en
Inventor
Katunobu Hamamoto
Masato Himeda
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 Intellectual Property Management Co Ltd
Original Assignee
Panasonic 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
Application filed by Panasonic Corp filed Critical Panasonic Corp
Publication of EP2434844A2 publication Critical patent/EP2434844A2/en
Publication of EP2434844A3 publication Critical patent/EP2434844A3/en
Application granted granted Critical
Publication of EP2434844B1 publication Critical patent/EP2434844B1/en
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B41/00—Circuit arrangements or apparatus for igniting or operating discharge lamps
    • H05B41/14—Circuit arrangements
    • H05B41/26—Circuit arrangements in which the lamp is fed by power derived from dc by means of a converter, e.g. by high-voltage dc
    • H05B41/28—Circuit arrangements in which the lamp is fed by power derived from dc by means of a converter, e.g. by high-voltage dc using static converters
    • H05B41/282—Circuit arrangements in which the lamp is fed by power derived from dc by means of a converter, e.g. by high-voltage dc using static converters with semiconductor devices
    • H05B41/2825—Circuit arrangements in which the lamp is fed by power derived from dc by means of a converter, e.g. by high-voltage dc using static converters with semiconductor devices by means of a bridge converter in the final stage
    • H05B41/2828—Circuit arrangements in which the lamp is fed by power derived from dc by means of a converter, e.g. by high-voltage dc using static converters with semiconductor devices by means of a bridge converter in the final stage using control circuits for the switching elements

Abstract

[Object] To enable measurement of input power without using a current transformer and obtain input power with sufficient accuracy even if there is a change in the ambient temperature of a light source load.
[Means for Settlement] A detection resistor 45 is connected in series to a switching element 42 of a power conversion circuit 4 and detects a current flowing in the switching element 42. By using a power setting value outputted from a power setting part 81 so as to determine a size of power supplied to a discharge lamp 11 and a current detection value corresponding to an output of the detection resistor 45, a power calculation part 83 obtains input power through correction of a fluctuation of a current detection value caused by a change in the ambient temperature of the discharge lamp 11. Here, the power calculation part 83 calculates input power by using a power adjustment value corresponding to a difference between a power setting value and a current detection value, a maximum power value being a power setting value obtained when power is supplied to the discharge lamp 11 at the maximum, and a power setting value.
EP11181655.9A 2010-09-27 2011-09-16 Lighting device, illumination fixture, and illumination system Not-in-force EP2434844B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2010216200A JP5771769B2 (en) 2010-09-27 2010-09-27 Lighting device, lighting fixture, lighting system

Publications (3)

Publication Number Publication Date
EP2434844A2 EP2434844A2 (en) 2012-03-28
EP2434844A3 true EP2434844A3 (en) 2012-08-29
EP2434844B1 EP2434844B1 (en) 2016-08-03

Family

ID=44651365

Family Applications (1)

Application Number Title Priority Date Filing Date
EP11181655.9A Not-in-force EP2434844B1 (en) 2010-09-27 2011-09-16 Lighting device, illumination fixture, and illumination system

Country Status (2)

Country Link
EP (1) EP2434844B1 (en)
JP (1) JP5771769B2 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP6008278B2 (en) 2012-07-24 2016-10-19 パナソニックＩｐマネジメント株式会社 Lighting device, lighting apparatus using the same, and lighting system
CN111190039B (en) * 2018-11-14 2022-06-28 台达电子工业股份有限公司 Current detection circuit of power converter

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6181086B1 (en) * 1998-04-27 2001-01-30 Jrs Technology Inc. Electronic ballast with embedded network micro-controller
US20100013393A1 (en) * 2006-08-31 2010-01-21 Panasonic Electric Works Co., Ltd. Discharge lamp lighting device, and illuminating device

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6413695A (en) 1987-07-07 1989-01-18 Fuji Electric Co Ltd Damaged paper money discriminator
JP3168842B2 (en) 1994-09-28 2001-05-21 松下電器産業株式会社 High frequency heating equipment
JP2007244195A (en) * 2001-03-07 2007-09-20 Matsushita Ecology Systems Co Ltd Power-saving device and its operation method
JP4192575B2 (en) * 2002-11-29 2008-12-10 東芝ライテック株式会社 Discharge lamp lighting device and lighting fixture

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6181086B1 (en) * 1998-04-27 2001-01-30 Jrs Technology Inc. Electronic ballast with embedded network micro-controller
US20100013393A1 (en) * 2006-08-31 2010-01-21 Panasonic Electric Works Co., Ltd. Discharge lamp lighting device, and illuminating device

Also Published As

Publication number Publication date
JP2012074156A (en) 2012-04-12
JP5771769B2 (en) 2015-09-02
EP2434844B1 (en) 2016-08-03
EP2434844A2 (en) 2012-03-28

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