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 77:
78. The LED lighting device according to claim 76, wherein the power allocation circuitry comprises at least a controller and an LED driver circuitry, wherein the LED driver circuitry is further configured with a first LED driver comprising a first semiconductor switching device electrically coupled to the first LED load and a second LED driver comprising a second semiconductor switching device electrically coupled to the second LED load, for controlling and delivering the first electric power and the second electric power respectively to the first LED load and the second LED load;
wherein the controller is electrically coupled with the first LED driver, the second LED driver, and the at least one external control device;
wherein when the light-emitting unit is in a turned-on state, the controller further outputs a first control signal to control a first conduction rate of the first semiconductor switching device of the first LED driver and a second control signal to control a second conduction rate of the second semiconductor switching device of the second LED driver to respectively deliver the first electric power to the first LED load and the second electric power to the second LED load to generate the diffused light with the diffused light color temperature thru the light diffuser according to the at least one external control signal;
wherein for tuning the diffused light color temperature, the controller operates the power allocation algorithm to reversely and complementarily adjust the first electric power and the second electric power respectively delivered to the first LED load and the second LED load such that the sum of the first electric power and the second electric power remains unchanged; and
wherein the controller is designed to operate the plurality of different power loading options, wherein different paired combinations of the first conduction rate and the second conduction rate respectively for controlling the first electric power delivered to the first LED load and the second electric power delivered to the second LED load for creating different diffused light color temperatures are preprogrammed and addressable by the controller for operating a pick and play process according to the at least one external control signal generated by the at least one external control device for selecting the corresponding diffused light color temperature performance in the diffused light color temperature switching scheme; wherein a total light intensity generated by the light-emitting unit remains unchanged while the diffused light color temperature is alternately adjusted.