| 摘要 |
<P>PROBLEM TO BE SOLVED: To obtain an LED lighting device capable of carrying by removing from a fluorescent lamp fixture. <P>SOLUTION: The LED lighting device includes bases 1 capable of connecting with the fluorescent lamp fixture turned on by an alternating-current power supply, a cross-section nearly round tube 2 having the bases 1 on both ends, a printed circuit board 5 for mounting a plurality of LEDs 4 inside the tube 2, a power failure detecting means 29 arranged in the tube 2 and detecting a power failure, a DC power supply 28 built in the tube 2 for lighting the LEDs 4 in response to the power failure detecting means 29, and a control circuit 6 for lighting the LEDs 4 with the DC power supply 28 when removing the tube 2 from the fluorescent lamp fixture. <P>COPYRIGHT: (C)2009,JPO&INPIT |
