JP5962946B2 - 発光素子点灯装置及び該回路を有する照明装置 - Google Patents
発光素子点灯装置及び該回路を有する照明装置 Download PDFInfo
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- JP5962946B2 JP5962946B2 JP2011254226A JP2011254226A JP5962946B2 JP 5962946 B2 JP5962946 B2 JP 5962946B2 JP 2011254226 A JP2011254226 A JP 2011254226A JP 2011254226 A JP2011254226 A JP 2011254226A JP 5962946 B2 JP5962946 B2 JP 5962946B2
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- emitting element
- light emitting
- voltage
- lighting device
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
- Y02B20/30—Semiconductor lamps, e.g. solid state lamps [SSL] light emitting diodes [LED] or organic LED [OLED]
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
- Y02B20/40—Control techniques providing energy savings, e.g. smart controller or presence detection
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- Electroluminescent Light Sources (AREA)
- Circuit Arrangement For Electric Light Sources In General (AREA)
Description
2 発光部
2a 発光パネル
5 電源ユニット
6、7 発光ユニット
8a 有機EL発光素子
9a 発光素子点灯装置
11 駆動電圧Vccの生成回路
12 信号生成回路
13 制御部
Claims (6)
- 有機EL発光素子を点灯させる発光素子点灯装置において、
前記発光素子に流れる電流を一定に制御する電流制御部と、
前記発光素子の両端電圧を検出する電圧検出部と、を備え、
前記電流制御部は、前記電圧検出部で検出した電圧の単位時間当たりの電圧変化量から所定時間毎の前記電圧変化の傾きを算出し、前記算出した傾きが定格範囲内での動作時に検出される値よりも大きな値の閾値を越えた場合に、発光素子に流す電流量を低減又は停止する、
ことを特徴とする発光素子点灯装置。 - 前記閾値は、設定環境下での温度変化に伴い生じる電圧の変化量から算出される前記傾きの値よりも大きな値に設定されている、ことを特徴とする請求項1に記載の発光素子点灯装置。
- 前記電流制御部は、更に、前記電圧検出部により検出された電圧が下限値を下回った場合又は上限値を越えた場合に、前記発光素子に流す電流を停止することを特徴とする請求項1又は請求項2に記載の発光素子点灯装置。
- 前記電流制御部は、入力される調光信号に応じて定められるデューティ比のPWM調光信号を生成し、該信号に基づいてPWM式の電流を前記発光素子に流す、ことを特徴とする請求項1乃至3の何れか一項に記載の発光素子点灯装置。
- 1以上の有機EL発光素子と、各発光素子を点灯するための請求項1乃至請求項4の何れか一項に記載の発光素子点灯装置と、該発光素子点灯装置に電力を供給する電源ユニットと、を有している発光パネルを備えることを特徴とする照明装置。
- 前記電流制御部は、外部から入力された調光信号に応じて定められるデューティ比のPWM調光信号を生成し、該信号に基づいて電流制御を行う、ことを特徴とする請求項5に記載の照明装置。
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JP2011254226A JP5962946B2 (ja) | 2011-11-21 | 2011-11-21 | 発光素子点灯装置及び該回路を有する照明装置 |
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JP2011254226A JP5962946B2 (ja) | 2011-11-21 | 2011-11-21 | 発光素子点灯装置及び該回路を有する照明装置 |
Publications (2)
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JP2013109964A JP2013109964A (ja) | 2013-06-06 |
JP5962946B2 true JP5962946B2 (ja) | 2016-08-03 |
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JP2011254226A Expired - Fee Related JP5962946B2 (ja) | 2011-11-21 | 2011-11-21 | 発光素子点灯装置及び該回路を有する照明装置 |
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JP (1) | JP5962946B2 (ja) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP6186918B2 (ja) * | 2013-06-17 | 2017-08-30 | 岩崎電気株式会社 | Led点灯回路及びled照明装置 |
JP2016170893A (ja) * | 2015-03-11 | 2016-09-23 | パナソニックIpマネジメント株式会社 | 発光素子点灯装置、発光モジュール及び照明器具 |
WO2024142938A1 (ja) * | 2022-12-27 | 2024-07-04 | コニカミノルタ株式会社 | 発光モジュール |
WO2024142940A1 (ja) * | 2022-12-27 | 2024-07-04 | コニカミノルタ株式会社 | 発光モジュール |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2009111035A (ja) * | 2007-10-26 | 2009-05-21 | Panasonic Electric Works Co Ltd | 発光ダイオード駆動装置、発光ダイオード駆動装置を用いた照明装置、車室内用照明装置、車両用照明装置 |
JP5047850B2 (ja) * | 2008-03-18 | 2012-10-10 | パイオニア株式会社 | カラー表示パネルおよび表示装置 |
JP2011204628A (ja) * | 2010-03-26 | 2011-10-13 | Panasonic Electric Works Co Ltd | 故障判別装置及びこれを用いた照明器具 |
JP5579477B2 (ja) * | 2010-03-26 | 2014-08-27 | パナソニック株式会社 | 過電流防止式電源装置及びそれを用いた照明器具 |
JP5601870B2 (ja) * | 2010-04-12 | 2014-10-08 | オーデリック株式会社 | 有機elパネルの点灯制御装置 |
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2011
- 2011-11-21 JP JP2011254226A patent/JP5962946B2/ja not_active Expired - Fee Related
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