LED lighting fixture with selectable color temperature
View Patent ↗A light emitting diode (LED) lighting fixture is provided. The lighting fixture includes a first LED engine and second LED engine. The first LED engine is configured to emit light corresponding to a first correlated color temperature. The second LED engine is configured to emit light corresponding to a second correlated color temperature that is different than the first correlated color temperature. When the first LED engine is hardwired to a power source, a light output of the lighting fixture corresponds to the first correlated color temperature. When the second LED engine is hardwired to the power source, the light output of the lighting fixture corresponds to the second correlated color temperature.
1. A light emitting diode (LED) lighting fixture, comprising:
a first LED engine having a first LED array, the first LED engine configured to emit light corresponding to a first correlated color temperature; and
a second LED engine having a second LED array, the second LED engine configured to emit light corresponding to a second correlated color temperature that is different than the first correlated color temperature,
wherein when the first LED engine is hardwired to a power source, a light output of the lighting fixture corresponds to the first correlated color temperature,
wherein when the second LED engine is hardwired to the power source, the light output of the lighting fixture corresponds to the second correlated color temperature, and
wherein the first LED engine and the second LED engine are configured to be independently hardwired to the power source.
2. The LED lighting fixture of claim 1 , wherein when both the first LED engine and the second LED engine are hardwired to the power source, the light emitted by the first LED engine blends with the light emitted by the second LED engine such that the light output of the lighting fixture corresponds to a third correlated color temperature that is different than the first correlated color temperature and the second correlated color temperature.
3. The LED lighting fixture of claim 1 , wherein the first LED engine includes a third LED array, the first LED array configured to emit light corresponding to a first color temperature, the third LED array configured to emit light corresponding to a third color temperature that is different than the first color temperature.
4. The LED lighting fixture of claim 3 , wherein when the first LED engine is hardwired to the power source, the light emitted by the first LED array blends with the light emitted by the third LED array such that the light emitted by the first LED engine corresponds to the first correlated color temperature.
5. The LED lighting fixture of claim 3 , wherein the second LED engine includes a fourth LED array, the second LED array of the second LED engine configured to emit light corresponding to a third second color temperature that is different than the first color temperature and the third color temperature, the fourth LED array of the second LED engine configured to emit light corresponding to a fourth color temperature that is different than the first color temperature, the second color temperature, and the third color temperature.
6. The LED lighting fixture of claim 5 , wherein when the second LED engine is hardwired to the power source, the light emitted by the second LED array of the second LED engine blends with the light emitted by the fourth LED array of the second LED engine such that the light emitted by the second LED engine corresponds to the second correlated color temperature.
7. The LED lighting fixture of claim 1 , wherein the power source comprises an alternating current (AC) power source.
8. The LED lighting fixture of claim 1 , wherein the power source comprises a direct current (DC) power source.
9. The LED lighting fixture of claim 1 , wherein the first LED engine and the second LED engine each comprise a driver circuit.
10. The LED lighting fixture of claim 1 , further comprising a terminal block.
11. The LED lighting fixture of claim 10 wherein when the first LED engine is hardwired to the power source, one or more wires associated with the first LED engine are connected to the terminal block and one or more wires associated with the power source are connected to the terminal block.
12. The LED lighting fixture of claim 10 , wherein when the second LED engine is hardwired to the power source, one or more conductors associated with the second LED engine are connected to the terminal block and one or more wires associated with the power source are connected to the terminal block.
13. A LED lighting fixture, comprising:
a first LED engine configured to emit light corresponding to a first correlated color temperature, the first LED engine comprising a first LED array and a second LED array, the first LED array configured to emit light corresponding to a first color temperature, the second LED array configured to emit light corresponding to a second color temperature that is different than the first color temperature; and
a second LED engine configured to emit light corresponding to a second correlated color temperature that is different than the first correlated color temperature, the second LED array comprising a first LED array and a second LED array, the first LED array of the second LED array configured to emit light corresponding to a third color temperature that is different than the first color temperature and the second color temperature, the second LED array of the second LED engine configured to emit light corresponding to a fourth color temperature that is different than the first color temperature, the second color temperature and the third color temperature,
wherein when the first LED engine is hardwired to a power source, the light emitted by the first LED array of the first LED engine blends with the light emitted by the second LED array of the first LED engine such that a light output of the LED lighting fixture corresponds to the first correlated color temperature,
wherein when the second LED engine is hardwired to the power source, the light emitted by the first LED array of the second LED engine blends with the light emitted by the second LED array of the second LED engine such that a light output of the LED lighting fixture corresponds to the second correlated color temperature.
14. The LED lighting fixture of claim 13 , wherein when both the first LED engine and the second LED engine are hardwired to the power source, the light emitted by the first LED engine blends with the light emitted by the second LED engine such that the light output of the LED lighting fixture corresponds to a third correlated color temperature that is different than the first correlated color temperature and the second correlated color temperature.
15. The LED lighting fixture of claim 13 , further comprising a terminal block.
16. The LED lighting fixture of claim 15 wherein when the first LED engine is hardwired to the power source, one or more wires associated with the first LED engine are connected to the terminal block and one or more wires associated with the power source are connected to the terminal block.
17. The LED lighting fixture of claim 15 , wherein when the second LED engine is hardwired to the power source, one or more conductors associated with the second LED engine are connected to the terminal block and one or more wires associated with the power source are connected to the terminal block.
18. The LED lighting fixture of claim 13 , wherein the first LED engine and the second LED engine are configured to be independently hardwired to the power source.
19. The LED lighting fixture of claim 13 , wherein the first LED engine and the second LED engine each comprise a driver circuit.
20. The LED lighting fixture of claim 13 , wherein the power source comprises an alternating current (AC) power source.