| 摘要 |
PROBLEM TO BE SOLVED: To provide an LED rotary lamp in which light is made to rotate in circumferential direction by using a plurality of light emitting diodes in order to be utilized for emergency lights, commercial displays, etc., that requires light to be rotation not only for an AC power source but also for a DC power source regardless of the polarity. SOLUTION: Many light emitting diodes 3 arranged circumferentially in a translucent case 2 are sequentially lighted in circumferential direction by connecting a control circuit which sequentially turns each of the light emitting diodes 3 on and off to a diode bridge circuit 22 which rectifies the AC power power and also conducts the polarity of the DC power source in both forward and backward directions. |
