| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a light-emitting diode signal lamp capable of stabilizing brightness at low cost. <P>SOLUTION: The light-emitting diode signal lamp comprises a plurality of light-emitting sections making a pair and respectively having light-emitting diodes and connected with each other in series, a lighting-up circuit converting AC from a constant current AC power source to DC and lighting up by supplying output smoothed by a smoothing circuit between both ends of the plurality of light-emitting sections connected in series, a blinking switch respectively connected in parallel with the plurality of light-emitting sections so as to shut off and turn off by respectively short-circuiting the plurality of light-emitting sections when respectively receiving an ON signal, a blinking switch driving means for alternately blinking the plurality of light-emitting sections by respectively giving a drive signal SLa for outputting the ON signal to the blinking switch at a designated interval and the other drive signal SRa synchronized with the drive signal SLa and reversed from on-off timing of the drive signal SLa, and a drive signal adjusting means for setting up to output the ON signal through a suspended time α wherein output of the ON signal of at least one drive signal is suspended at a designated period together with the ON signal of the other drive signal. <P>COPYRIGHT: (C)2010,JPO&INPIT |
