LED festoon lighting
View Patent ↗Light emitting diode (LED) modules useable in festoon-type lighting applications and lighting systems incorporating such modules. The LED module generally includes a circuit board having one or more LEDs mounted in a heat sink member. Contact members are attached to opposing ends of device. The heat sink is not required to conduct electrical current when the LED(s) is/are illuminated. High powered LEDs (greater than ½ Watt) may be employed.
1. A light emitting diode module comprising:
a circuit board having an upper surface, an undersurface, a first end, a second end and a solid state regulated circuit comprising an AC regulation scheme and a plurality of thermal vias;
at least one light emitting diode mounted on the circuit board;
a first contact member attached to the first end of the circuit board;
a second contact member attached to the second end of the circuit board; and
a heat sink member affixed to the underside of the circuit board, wherein said heat sink member is not required to conduct electrical current when said at least one LED is illuminated.
2. A light emitting diode module according to claim 1 wherein the first and second contact members comprise substantially conical end caps.
3. A light emitting diode module according to claim 1 wherein the first and second contact members are configured for mounting within a festoon type light fixture.
4. A light emitting diode module according to claim 1 wherein said at least one light emitting diode comprises at least one light emitting diode having an output of at least 35 lumens.
5. A light emitting diode module according to claim 1 wherein said at least one light emitting diodes comprises a plurality of light emitting diodes each of which has an output of at least 35 lumens.
6. A light emitting diode module according to claim 1 wherein said at least one light emitting diode comprises at least one light emitting diode having an output in the range of from about 25 to about 75 lumens.
7. A light emitting diode module according to claim 1 wherein said at least one light emitting diodes comprises a plurality of light emitting diodes each of which has an output in the range of from 25 to about 75 lumens.
8. A light emitting diode module according to claim 1 wherein said at least one light emitting diode comprises at least one light emitting diode having a power of at least ½ Watt.
9. A light emitting diode module according to claim 1 wherein said at least one light emitting diodes comprises a plurality of light emitting diodes each of which has a power of at least ½ Watt.
10. A light emitting diode module according to claim 1 further comprising one or more thermally conductive layers on the upper surface of the circuit board.
11. A light emitting diode according to claim 8 wherein at least one thermal via is located within or adjacent to a thermally conductive layer.
12. A light emitting diode module according to claim 1 wherein the heat sink member is formed substantially of copper or aluminum.
13. A light emitting diode module according to claim 1 which operates on a total of less than 4 watts of power.
14. A light emitting diode module according to claim 1 which operates on a total of less than less than 3 watts of power.
15. A light emitting diode module according to claim 1 which operates on operates on a total of about 2½ watts of power.
16. A light emitting diode module according to claim 1 wherein said at least one light emitting diode has an output in the range of about 25 to about 75 lumens each and wherein the module draws about 2½ watts of power when each of said at least one LED's is/are illuminated.
17. A light emitting diode module according to claim 1 wherein no component of the device extends upwardly above the upper-most points on the first and second contact members.
18. A festoon light system comprising a festoon type light fixture having at least one light emitting diode module according to claim 1 mounted therein.