LED lighting device and lighting apparatus

Abstract

Abstract Translated from Japanese 【課題】発光ダイオードを高効率で点灯させる自励式のＬＥＤ点灯装置および照明器具を提供する。 【解決手段】ＬＥＤ点灯装置１は、直流電源２と、インダクタＬ１および発光ダイオード４との接続を開閉する第１のスイッチング素子ＦＥＴ１と、第１のスイッチング素子ＦＥＴ１の制御端子および出力端子間に電流検出手段Ｒ１を介して接続され、電流検出手段Ｒ１が検出した電流に応じて第１のスイッチング素子ＦＥＴ１の制御端子側から電流が流れ、帰還回路５により第１のスイッチング素子ＦＥＴ１の制御端子に帰還される電流を変化させて第１のスイッチング素子ＦＥＴ１のオン期間を変化させる第２のスイッチング素子Ｔｒ１とを具備している。 【選択図】図１ A self-excited LED lighting device and a lighting fixture for lighting a light emitting diode with high efficiency are provided. An LED lighting device 1 includes a DC power supply 2, a first switching element FET1 that opens and closes a connection between an inductor L1 and a light emitting diode 4, and a current between a control terminal and an output terminal of the first switching element FET1. A current flows from the control terminal side of the first switching element FET1 according to the current detected by the current detection means R1 and is connected via the detection means R1, and is fed back to the control terminal of the first switching element FET1 by the feedback circuit 5. And a second switching element Tr1 for changing the ON period of the first switching element FET1 by changing the current to be supplied. [Selection] Figure 1

Inventors

• 👤 Takuro Hiramatsu
• 👤 拓朗 平松
• 👤 Michihiko Nishiie
• 👤 充彦 西家
• 👤 Masahiko Kamata
• 👤 征彦 鎌田
• 👤 Keiichi Shimizu
• 👤 恵一 清水

Bibliographic Details