Field Configurable Industrial LED Light Fixture
A field configurable industrial light fixture is disclosed that includes a power module unit to which an arbitrary number of petals containing LEDs can be coupled. The fixture enables configuration of the amount and orientation of the light emitted from the solid-state lighting devices to be adapted in the field to suit the particular application of the fixture.
1 . A lighting fixture for solid-state light emitting devices comprising:
a power module unit to which electrical power can be supplied, the power module unit including:
at least one controller circuit board for the solid-state light emitting devices;
a lower portion having an outer perimeter; and
a plurality of fittings arranged around the outer perimeter, each fitting being adapted to mechanically support a petal coupled to that fitting;
at least one petal coupled to the power module unit, the petal including:
a mechanical connector configured to be physically supported by one of the plurality of fittings arranged around the outer perimeter of the base;
a heat sink; and
a plurality of solid-state light emitting devices affixed to the heat sink; and
whereby a desired number of petals may be affixed to the base in varying orientations around the base.
2 . A lighting fixture as in claim 1 wherein the solid-state light emitting devices comprise an array of light emitting diodes (LEDs).
3 . A lighting fixture as in claim 2 further comprising a lens array disposed over the array of LEDs.
4 . A lighting fixture as in claim 2 wherein each of the petals further includes a plurality of fins affixed to a back side of the heat sink to help cool the heat sink.
5 . A lighting fixture as in claim 1 wherein:
each of the plurality of fittings includes a slot having an open end and a closed end, and
each of the petals includes a protruding portion which slides into the slot and is retained in position by the closed end of the slot.
6 . A lighting fixture as in claim 1 further comprising a transformer disposed within the power module unit, and wherein AC power supplied to the power module unit is converted to DC power before being provided to each of the petals.
7 . A lighting fixture as in claim 1 further comprising a top cover and a bottom cover to protect the power module from ambient conditions.
8 . A lighting fixture as in claim 1 wherein:
the lower portion of the power module further includes a plurality of polygonal sides, each one of the polygonal sides including one of the plurality of fittings; and
the mechanical connector on each petal engages with a corresponding one of the plurality of fittings.
9 . A lighting fixture as in claim 8 wherein the plurality of polygonal sides comprises 12 sides, and the desired number of petals is 12.
10 . A lighting fixture as in claim 1 wherein each petal has a first smaller width at the mechanical connector and a second larger width at an end opposite the mechanical connector.
11 . A lighting fixture as in claim 1 wherein the plurality of solid-state light emitting devices are mounted on a circuit board which is affixed to the heat sink.
12 . A lighting fixture as in claim 11 wherein the heat sink of each petal further comprises:
a first lower surface to which the circuit board is affixed; and
a second upper surface from which a plurality of fins extend to help cool the heat sink.
13 . A lighting fixture as in claim 12 wherein:
the plurality of solid-state light emitting devices are arranged in an array on the circuit board; and
an array of lenses is disposed over the array of solid-state light emitting devices.
14 . A lighting fixture as in claim 13 wherein the array of lenses is held in position with regard to the array of solid-state light emitting devices by a lens clamp frame.