LED pool and spa light
First Claim
1. A lighting fixture comprising:
- a housing having an interior cavity and an opening;
a transparent cover attached to the housing and covering the opening;
a heat sink including a first mounting portion and a second mounting portion, the first mounting portion being attached to the housing within the interior cavity, the second mounting portion having a first side and a second side opposite the first side;
a first circuit board mounted to the first side of the second mounting portion;
a lighting assembly including an LED light source, the LED light source including a plurality of LEDs mounted to the first circuit board; and
a second circuit board mounted to the second side of the second mounting portion, the second circuit board including at least of portion of a control circuit, the control circuit being operatively connected to the LED light source for selectively providing power to each of the plurality of LEDs,the lighting fixture operating while the housing is submerged in water such that heat generated by the LEDs and the control circuit is conducted to the heat sink, the heat sink conducts the heat to the housing, and the housing conducts the heat to the water.
1 Assignment
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Accused Products
Abstract
A lighting fixture includes a heat sink having a first mounting portion attached to a housing. A first circuit board containing LEDs is mounted to a first side of a second mounting portion of the heat sink. A second circuit board include an LED control circuit is mounted to a second side of the second mounting portion. A multi-layer circuit board includes a heat-dissipating core bonded to first and second dielectric substrates, which are bonded to first and second electrically conductive layers. An electrical conductor extends through a through-hole in the board to electrically connect the first and second conductive layers. An electrical insulator inside the through-hole electrically isolates the core from the conductor. A transparent cover is shaped to cause downwardly projecting light rays emitted from the LEDs to be refracted less than upwardly projecting light rays. The cover also includes vertically extending projections for horizontally refracting light.
59 Citations
22 Claims
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1. A lighting fixture comprising:
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a housing having an interior cavity and an opening; a transparent cover attached to the housing and covering the opening; a heat sink including a first mounting portion and a second mounting portion, the first mounting portion being attached to the housing within the interior cavity, the second mounting portion having a first side and a second side opposite the first side; a first circuit board mounted to the first side of the second mounting portion; a lighting assembly including an LED light source, the LED light source including a plurality of LEDs mounted to the first circuit board; and a second circuit board mounted to the second side of the second mounting portion, the second circuit board including at least of portion of a control circuit, the control circuit being operatively connected to the LED light source for selectively providing power to each of the plurality of LEDs, the lighting fixture operating while the housing is submerged in water such that heat generated by the LEDs and the control circuit is conducted to the heat sink, the heat sink conducts the heat to the housing, and the housing conducts the heat to the water. - View Dependent Claims (2, 3)
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4. A lighting fixture comprising:
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a housing having an interior cavity and an opening; a transparent cover attached to the housing and extending across the opening of the housing; and a light source projecting a beam of light toward the opening, the beam including first light rays projecting upward toward the transparent cover and second light rays projecting downward toward the transparent cover, wherein the transparent cover is shaped to cause the second light rays to be refracted less than the first light rays. - View Dependent Claims (5, 6)
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7. A lighting fixture comprising:
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a housing having an interior cavity and an opening; a transparent cover attached to the housing and extending across the opening of the housing, the transparent cover including a plurality of vertically extending projections distributed across a surface of the transparent cover; and a plurality of light source for projecting a beam of light toward the opening;
wherein the projections are shaped to cause the beam of light to be refracted horizontally. - View Dependent Claims (8, 9, 10)
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11. A lighting fixture comprising:
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a housing having an interior cavity and an opening;
a transparent cover attached to the housing and extending across the opening of the housing;a reflector array including a plurality of reflectors, each of the plurality of reflectors including a first open end, a second open end, and first and second reflective surface each extending between the first open end and the second open end, the first reflective surface facing the second reflective surface; and a light source comprising a plurality of rows of LEDs each including a plurality of LEDs, each of the rows projecting light into the first open end of an associated one of the plurality of reflectors, wherein the light projected by each row of LEDs is reflected by the first and second reflective surfaces of the associated reflector causing the light to pass through the second open end of the associated reflector and through the transparent cover. - View Dependent Claims (12, 13)
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14. A lighting fixture comprising:
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a housing having an interior cavity and an opening; a transparent cover attached to the housing and covering the opening; a lighting assembly including an LED light source, the LED light source include a plurality of LEDs; and a control circuit operatively connected to the LED light source for selectively providing power to each of the plurality of LEDs, the control circuit including; a microcontroller having an input connected to sense an alternating current source and a plurality of outputs for controlling the plurality of LEDs; a plurality of multiplexers each having a plurality of outputs and an input connected to one of the plurality of outputs of the microcontroller; and a plurality of electronic switches each having a control input and a power output, each power output being connected to selectively power one of the plurality of LEDs, each of the control inputs being connected to one of the plurality of outputs of one of the plurality of multiplexers, wherein the microcontroller can individually and selectively control power to each of the plurality of LEDs. - View Dependent Claims (15, 16, 17, 18, 19, 20, 21, 22)
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Specification