Patent ID: 11893868
Assignee: VAXCEL INTERNATIONAL CO., LTD.
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC G  F  H  Y | IPC F  G  H

Claim 100:
101. The multi-level LED security light according to claim 97, wherein when the light-emitting unit is operated in the first illumination mode, a light intensity of the first LED load and a light intensity of the second LED load are respectively adjustable to tune the first diffused light color temperature of the diffused light created thru the light diffuser; wherein upon receiving the at least one external control signal from the at least one external control device, the controller operates in response to reversely and complementarily adjust the light intensity of the first LED load and the light intensity of the second LED load with the same pace; wherein for tuning to a lower diffused light color temperature, the controller operates to control the first conduction rate of the first semiconductor switching device to increase the first electric power delivered to the first LED load and at the same time operates to control the second conduction rate of the second semiconductor switching device to decrease the second electric power delivered to the second LED load with the same pace such that the sum of the first electric power and the second electric power remains unchanged; wherein for tuning to a higher diffused light color temperature, the controller operates to control the first conduction rate of the first semiconductor switching device to decrease the first electric power delivered to the first LED load and at the same time operates to control the second conduction rate of the second semiconductor switching device to increase the second electric power delivered to the second LED load with the same pace such that the sum of the first electric power and the second electric power remains unchanged.