JP6507621B2 - Led点灯装置及び照明器具 - Google Patents
Led点灯装置及び照明器具 Download PDFInfo
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- JP6507621B2 JP6507621B2 JP2014255866A JP2014255866A JP6507621B2 JP 6507621 B2 JP6507621 B2 JP 6507621B2 JP 2014255866 A JP2014255866 A JP 2014255866A JP 2014255866 A JP2014255866 A JP 2014255866A JP 6507621 B2 JP6507621 B2 JP 6507621B2
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- voltage
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- power supply
- led
- load
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- 239000003990 capacitor Substances 0.000 description 17
- 238000009499 grossing Methods 0.000 description 13
- 238000001514 detection method Methods 0.000 description 8
- 238000010586 diagram Methods 0.000 description 8
- 238000000034 method Methods 0.000 description 2
- 230000001629 suppression Effects 0.000 description 2
- 238000007796 conventional method Methods 0.000 description 1
- 230000005669 field effect Effects 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
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Claims (2)
- LEDモジュールに負荷電流を供給して点灯させる電源回路と、
前記LEDモジュールの負荷電圧に対応する保護電圧を生成する保護電圧生成回路と、
前記電源回路と前記保護電圧生成回路を制御する制御回路とを備え、
前記電源回路は、スイッチング素子のスイッチング動作で前記負荷電流の電流値を調整し、
前記制御回路は、前記電源回路の負荷電流に対応する調光電圧と前記電源回路のスイッチング動作のデューティ比に応じて前記保護電圧生成回路の前記負荷電圧に対する前記保護電圧の出力特性を変え、前記保護電圧が閾値を逸脱した場合に前記電源回路に安全動作を行わせることを特徴とするLED点灯装置。 - 請求項1に記載のLED点灯装置を備えることを特徴とする照明器具。
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JP2014255866A JP6507621B2 (ja) | 2014-12-18 | 2014-12-18 | Led点灯装置及び照明器具 |
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JP2014255866A JP6507621B2 (ja) | 2014-12-18 | 2014-12-18 | Led点灯装置及び照明器具 |
Publications (2)
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JP2016115639A JP2016115639A (ja) | 2016-06-23 |
JP6507621B2 true JP6507621B2 (ja) | 2019-05-08 |
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JP2014255866A Active JP6507621B2 (ja) | 2014-12-18 | 2014-12-18 | Led点灯装置及び照明器具 |
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Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
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US7276861B1 (en) * | 2004-09-21 | 2007-10-02 | Exclara, Inc. | System and method for driving LED |
JP2008160934A (ja) * | 2006-12-21 | 2008-07-10 | Sharp Corp | 電源回路およびこれを用いた電子機器 |
JP5870314B2 (ja) * | 2011-11-18 | 2016-02-24 | パナソニックIpマネジメント株式会社 | 点灯装置及び照明器具 |
JP6244971B2 (ja) * | 2014-02-21 | 2017-12-13 | 三菱電機株式会社 | 点灯装置および照明器具 |
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