Compact A.C. powered LED light fixture
A compact LED light fixture includes an LED circuit board whose top surface mounts one or more LED's and an A.C. LED Driver circuit. An input circuit board is mounted on an underside of the mounting platform. Unconditioned A.C. power from electrical cables positioned in a wire way is conducted by an electrical connector to the top surface the LED circuit board, then across and down through the top surface of the LED circuit board to the input circuit board where the A.C. power is conditioned and then conducted back through the LED circuit board to the A.C. LED driver.
1. An LED light fixture comprising:
a wireway having first and second sides and a bottom surface defining a channel for receiving at least first and second electrical cables;
a circuit board mounting platform configured to be received and supported by said wireway;
a first circuit board carrying one or more LED's and an A.C. LED Driver circuit, the first circuit board being mounted on said circuit board mounting platform;
an input circuit board located in said wireway beneath said first circuit board, the input circuit board comprising circuitry configured to receive an unconditioned A.C. line signal and convert the unconditioned A. C. line signal to a conditioned A.C. line signal suitable for supply to said A.C. LED driver circuit;
a first electrical connector configured to conduct unconditioned A.C. power from said first and second cables to first and second electrically conductive power pins positioned to supply power to a top surface of said first circuit board; and
a first electrical conductor path for conducting said unconditioned A.C. power across said first circuit board and down and through said first circuit board to said input circuit board.
2. The LED light fixture of claim 1 further comprising a second electrical conductor path for conducting the conditioned A.C. line signal from said input circuit board to said A.C. LED Driver circuit.
3. The LED light fixture of claim 2 wherein said input circuit board is attached to a bottom surface of said circuit board mounting platform.
4. The LED light fixture of claim 2 wherein said first electrical conductor path comprises:
a second electrical connector positioned beneath said first circuit board and having third and fourth electrically conductive power pins extending through said first circuit board and spaced apart from said first and second power pins;
first and second conductor traces formed on said first circuit board and respectively connected at one end to said first and second power pins and at an opposite end to said third and fourth power pins;
a third electrical connector configured to mate with said second electrical connector and to supply said unconditioned A.C. power to said input circuit board.
5. The LED light fixture of claim 4 wherein said second electrical conductor path comprises fifth and sixth electrically conductive power pins on said second electrical connector and wherein said third electrical connector is configured to receive said conditioned A.C. line signal from said input circuit board.
6. The LED light fixture of claim 2 wherein said second electrical conductor path comprises fifth and sixth electrically conductive power pins on said second electrical connector and wherein said third electrical connector is configured to receive said conditioned A.C. line signal from said input circuit board.
7. The LED light fixture of claim 1 wherein said first electrical conductor path comprises:
a second electrical connector positioned beneath said circuit board and having third and fourth electrically conductive power pins extending through said circuit board and spaced apart from said first and second power pins;
first and second conductor traces formed on said circuit board and respectively connected at one end to said first and second power pins and at and an opposite end to said third and fourth power pins;
a third electrical connector configured to mate with said second electrical connector and to supply said unconditioned A.C. power to said input circuit board.
8. The LED light fixture of claim 1 wherein said circuitry comprises a diode bridge.
9. The LED light fixture of claim 8 wherein said circuitry further comprises a transorb diode and a metal oxide varistor.
10. An LED light fixture comprising:
a first circuit board carrying one or more LEDs and an A.C. LED Driver circuit on a top surface thereof;
an input circuit board located beneath said first circuit board, the input circuit board comprising circuitry configured to receive an unconditioned A.C. line signal at an input thereof and to supply a conditioned A.C. line signal to said A.C. LED driver circuit; and
a first A. C. conductor path running from a bottom surface of said first circuit board, up through said first circuit board and across the top surface of said first circuit board and down through said first circuit board to the input of said input circuit board.
11. The LED light fixture of claim 10 wherein said first A. C. conductor path is connected to a source of A.C. line voltage.
12. The LED light fixture of claim 10 wherein said circuitry comprises a diode bridge.
13. The LED light fixture of claim 12 wherein said circuitry further comprises a transorb diode and a metal oxide varistor.
14. The LED light fixture of claim 10 further comprising a first electrical connector configured to conduct unconditioned A.C. power from first and second cables to first and second electrically conductive power pins positioned to supply power to a top surface of said first circuit board.
15. The LED light fixture of claim 10 further comprising a second electrical conductor path for conducting the conditioned A.C. line signal from said input circuit board to said A.C. LED Driver circuit.
16. The LED light fixture of claim 15 wherein said circuitry comprises a diode bridge.
17. The LED light fixture of claim 16 wherein said circuitry further comprises a transorb diode and a metal oxide varistor.
18. The LED light fixture of claim 10 wherein said first A.C. conductor path comprises:
a second electrical connector positioned beneath said circuit board and having third and fourth electrically conductive power pins extending through said circuit board and spaced apart from said first and second power pins;
first and second conductor traces formed on said circuit board and respectively connected at one end to said first and second power pins and at and an opposite end to said third and fourth power pins; and
a third electrical connector configured to mate with said second electrical connector and to supply said unconditioned A.C. power to said input circuit board.
19. The LED light fixture of claim 18 further comprising a second electrical conductor path for conducting the conditioned A.C. line signal from said input circuit board to said A.C. LED Driver circuit.
20. The LED light fixture of claim 19 wherein said second electrical conductor path comprises fifth and sixth electrically conductive power pins on said second electrical connector and wherein said third electrical connector is configured to receive said conditioned A.C. line signal from said input circuit board.