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US 9,541,275 B2Granted
Apparatus and method for management of heat in a LED mounted lighting fixture
OwnerShirish Devidas Deshpandeinventor
Life of this patent
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Abstract
The invention provides an apparatus and a method to dissipate heat generated in a LED mounted lighting fixture, comprising an active heat sink with a plurality of integral vents into such active heat sink, wherein the plurality of vents have only two openings, a first opening and a second opening, wherein the active sink is characterized by an induced local air convection current, induced by heat generated at a LED junction in the LED mounted lighting fixture.
Claims8
A Light Emitting Diode (LED) mounted lighting fixture, comprising:
- an LED;
- and
- a heat sink for dissipating heat generated by the LED, wherein the LED is mounted on the heat sink,
- wherein the heat sink comprises a plurality of integral vents each having a cross section, wherein the cross section of each of the plurality of integral vents varies across an entire length of the integral vent such that a top side of longer sides of the heat sink has an oblique angle to a plane parallel to a bottom side of the longer sides, and
- wherein each of the plurality of integral vents comprises a first opening and a second opening at opposite sides such that a local air convection current throughout the integral vents is induced from the first opening towards the second opening by virtue of the heat generated by the LED.
2 more elements
A method to dissipate heat generated in a Light Emitting Diode (LED) mounted lighting fixture, method comprising:
- forming a plurality of vents in the active heat sink such that the plurality of vents are integral to the active heat sink, wherein each of the plurality of vents has a varying cross section across an entire length of the vent such that a top side of longer sides of the heat sink has an oblique angle to a plane parallel to a bottom side of the longer sides;
- inducing a local air convection current in the plurality of vents by operating at least one LED to enable a temperature rise at an LED junction associated with the at least one LED, wherein the local air convection current is induced by the temperature rise at the LED junction;
- and
- dissipating heat generated by the rise in the temperature at the LED junction by conduction, radiation, convection, or a combination thereof.
1 more element
Dependencies are inferred from the claim text.