LED lighting fixtures with enhanced heat dissipation
AssigneeDeepsea Power & Light, Inc.
InventorsMark Steven Olsson, John Russell Sanderson, IV, Brian Peter Lakin, Jon Earl Simmons
Life of this patent
Estimating the term…
Abstract
An LED lighting fixture includes a metal core printed circuit board (MCPCB) having a rear side and a front side. At least one LED is mounted to the front side of the MCPCB. A transparent window is mounted and sealed to the front side of the MCPCB to enclose the LED. A portion of the MCPCB extends from the transparent window so that it can be in heat exchange contact with water when the window of the lighting fixture is submerged in water.
Claims20
An LED lighting fixture, comprising:
- a metal core printed circuit board (MCPCB) having a rear side and a front side;
- at least one light emitting diode (LED) mounted to the front side of the MCPCB;
- a transparent window mounted and sealed to the front side of the MCPCB to enclose the LED;
- and
- a portion of the MCPCB extending from the transparent window so that it can be in heat exchange contact with water when the window of the lighting fixture is submerged in water.
A lighting fixture for providing illumination in a body of water, comprising:
- a metal core printed circuit board (MCPCB) having a front side and a rear side;
- a plurality of light emitting diodes (LEDs) mounted to the front side of the MCPCB;
- a plurality of TIR lenses, each surrounding a corresponding one of the LEDs;
- and
- a housing having an interior that encloses the MCPCB, LEDs and lenses, including a transparent window extending across the LEDs and lenses adjacent the front side of the MCPCB, the housing including a portion sealed to the MCPCB, a heat exchange portion of the MCPCB extending outside of the housing for contacting the water so that heat can be drawn out of the LEDs and the MCPCB.
A lighting fixture for providing illumination in a body of water, comprising:
- a laterally extending disc-shaped metal core printed circuit board (MCPCB) having a front side and a rear side;
- a plurality of light emitting diodes (LEDs) mounted to the front side of the MCPCB;
- a plurality of TIR lenses, each surrounding a corresponding one of the LEDs;
- a generally cylindrical housing having an interior that encloses the MCPCB, LEDs and lenses, including a transparent window extending across the LEDs and lenses adjacent the front side of the MCPCB, the housing including a portion sealed to the MCPCB, a heat exchange portion of the MCPCB extending outside of the housing including an exposed front heat exchange surface for contacting the water so that heat can be drawn out of the LEDs and longitudinally through the MCPCB into the water;
- a disc-shaped flange surrounding the housing and having a plurality of circumferentially spaced holes for allowing the water to flow into contact with the exposed front heat exchange surface of the MCPCB;
- and
- a cable sealing gland attached to the MCPCB.
Dependencies are inferred from the claim text.