| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide an LED lighting device that can be reliably turned on whether a fluorescent lamp luminaire is of a starter type, a rapid start type or an inverter type without requiring modifications to the fluorescent lamp luminaire.SOLUTION: In the LED lighting device, a DC current rectified in an input section 10 is supplied to a plurality of light emitting diode elements 21, 22. A coil L and a terminal path 5-4 of an intelligent power device IC are connected in series with the plurality of light emitting diode elements 21, 22, and the terminal path 5-4 is switched on/off. The coil L has an inductance determined so as to satisfy a first condition of reproducing a pseudo fluorescent lamp filament and a second condition of maintaining a current value supplied to the plurality of light emitting diode elements 21, 22 via a recovery diode D in an off state.</p> |
