| 摘要 |
PROBLEM TO BE SOLVED: To provide an annular LED (Light Emitting Diode) lamp with a connector fitted through a notch of the annular LED lamp with play, allowing immediate replacement of a commercial annular fluorescent lamp. SOLUTION: The annular LED lamp includes an annular board having first and second power supply wires, a plurality of LED chips mounted on one or both sides of the board for DC power to be supplied from the first and second power supply wires thereto, a converter circuit mounted on the board, and having output terminals connected to the power supply wires, a hollow doughnut-type container storing the board, and having the notch, and the connector having a pair of AC power supply protruded terminals for the commercial annular fluorescent lamp and a pair of ignition protruded terminals on the input side, and fitted through the notch. The pair of commercial AC power supply protruded terminals are connected at their output sides to the input terminals of the converter circuit. COPYRIGHT: (C)2011,JPO&INPIT
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