Flexible strip lighting apparatus and methods
View Patent ↗Aspects of the present disclosure relate to a lighting device. The lighting device may include a circuit board, a plurality of white light emitting diodes (LEDs) mounted on one side of the circuit board and configured to emit white light at a first color correlated temperature (CCT) value, and a pigmented elastomer comprising a plurality of pigments distributed throughout the elastomer and encapsulating at least the one side of the circuit board. The plurality of pigments may include a red pigment and a yellow pigment and be configured to change a CCT value of the white light emitted by the plurality of LEDs from the first CCT value to a second CCT value that is different from the first CCT value.
1. A lighting device comprising:
a circuit board;
a plurality of white light emitting diodes (LEDs) mounted on one side of the circuit board and configured to emit white light at a first color correlated temperature (CCT) value; and
a pigmented elastomer comprising a plurality of non-phosphor based pigments distributed throughout the elastomer and encapsulating at least the one side of the circuit board, the plurality of non-phosphor based pigments comprising a red pigment and a yellow pigment and being configured to change a CCT value of the white light emitted by the plurality of LEDs from the first CCT value to a second CCT value that is different from the first CCT value and within a range of 1800 degrees Kelvin (K) and 5000 degrees K.
2. The lighting device of claim 1 , wherein a concentration of the yellow pigment is different from a concentration of the red pigment.
3. The lighting device of claim 2 , wherein a ratio of the concentration of red pigment to the concentration of the yellow pigment is 1:2.
4. The lighting device of claim 1 , wherein the second CCT value is within a range between 1800 degrees K and 2200 degrees K.
5. The lighting device of claim 4 , wherein the concentration of the red pigment is higher than the concentration of the yellow pigment.
6. The lighting device of claim 1 , wherein the second CCT value is within a range between 2200 degrees K and 2400 degrees K.
7. The lighting device of claim 6 , wherein a concentration of the red pigment is higher than a concentration of the yellow pigment.
8. The lighting device of claim 1 , wherein the second CCT value is within a range between 2400 degrees K and 3200 degrees K.
9. The lighting device of claim 8 , wherein the concentration of red pigment is the same as the concentration of yellow pigment.
10. The lighting device of claim 1 , wherein the second CCT value is within a range between 3200 degrees K and 5000 degrees K.
11. The lighting device of claim 1 , wherein the first CCT value is 2700 degrees K.
12. The lighting device of claim 1 , wherein the plurality of white LEDs are a plurality of white phosphor-converted LEDs.
13. The lighting device of claim 1 , wherein the pigmented elastomer is in direct contact with the plurality of LEDs.
14. The lighting device of claim 1 , wherein the plurality of pigments are a plurality of silicone dyes.
15. A method of manufacturing a lighting device comprising the steps of:
mounting a plurality of white LEDs configured to emit white light at a first color correlated temperature (CCT) value on a first side of a circuit board;
mixing an elastomer with a plurality of non-phosphor based pigments to produce a pigmented elastomer, the plurality of non-phosphor based pigments comprising a red pigment and a yellow pigment and being configured to change a CCT value of the white light emitted by the plurality of LEDs from the first CCT value to a second CCT value that is different from the first CCT value and within a range of 1800 degrees Kelvin (K) and 5000 degrees K; and
encapsulating the first side of the circuit board in the pigmented elastomer.
16. The method of claim 15 , further comprising placing the circuit board into a tray such that a second side of the circuit board opposite the first side faces the tray before encapsulating the first side of the circuit board.
17. The method of claim 15 , wherein a concentration of the yellow pigment is different from a concentration of the red pigment.
18. The method of claim 15 , wherein a ratio of the concentration of red pigment to the concentration of the yellow pigment is 1:2.
19. The method of claim 15 , wherein the plurality of pigments are a plurality of silicone dyes.
20. A lighting device comprising:
a circuit board;
a plurality of white phosphor-converted light emitting diodes (LEDs) mounted on one side of the circuit board and configured to emit white light at a first color correlated temperature (CCT) value of 2700 degrees Kelvin (K); and
a pigmented elastomer comprising a plurality of pigments distributed throughout the elastomer and encapsulating at least the one side of the circuit board, the plurality of pigments comprising a red pigment and a yellow pigment and being configured to change a CCT value of the white light emitted by the plurality of LEDs from the first CCT value to a second CCT value that is different from the first CCT value and within a range of 1800 degrees K and 5000 degrees K.