LED lighting fixtures
AssigneeKoninklijke Philips Electronics N.V.
InventorsTimothy B. Moss, Eric J. Kille, Mubasher Ahmad, James M. Gaines, Bernd Clauberg
Life of this patent
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Abstract
A lighting fixture (20-23) mechanically encloses a LED module (30), which includes at least one LED (40) and can further include a LED driver (50) in electrical communication with the LED(s) (40) to operably provide a LED drive signal to the at least one LED (40), a thermal management system (60) in thermal communication with the LED(s) (40) and the lighting fixture (20-23) to facilitate a heat transfer from the LED(s) (40) to the lighting fixture (20-23), and/or a beam shaper (70) in optical communication with the LED(s) (40) to modify an illumination profile of a radiation beam emitted by the LED(s) (40).
Claims19
A lighting apparatus, comprising:
- a lighting fixture;
- and
- a LED module mechanically enclosed by the lighting fixture, wherein the LED module includes:
- at least one LED,
- a LED driver in electrical communication with the at least one LED to operably provide a LED drive signal to the at least one LED, and
- a thermal sensor operable to facilitate a control by the LED driver of a magnitude of the LED drive signal based on an operating temperature of the at least one LED as sensed by the thermal sensor.
A lighting apparatus, comprising:
- a lighting fixture;
- and
- a LED module mechanically enclosed by the lighting fixture, wherein the LED module includes at least one LED and a LED driver, the at least one LED mounted on a thermal management system in thermal communication with the lighting fixture to facilitate a heat transfer from the at least one LED to the lighting fixture, and
- wherein the thermal management system includes a first printed circuit board having the at least one LED mounted thereon and a second printed circuit board having at least a portion of the LED driver mounted thereon.
A lighting apparatus, comprising:
- a lighting fixture;
- and
- a LED module mechanically enclosed by the lighting fixture, wherein the LED module includes:
- at least one LED, and
- a beam shaper in optical communication with the at least one LED to modify an illumination profile of a radiation beam emitted by the at least one LED, wherein the beam shaper includes:
- at least one optical component optically aligned with the at least one LED to thereby modify the illumination profile of the radiation beam emitted by the at least one LED, and
- at least one heat shrink tubing fitted around the at least one optical component to securely maintain the optical alignment of the at least one optical component with the at least one LED,
- wherein the at least one optical component includes a transparent plate having an extension for enhancing a secure fit of the at least one heat shrink tubing around the at least one optical component.
Dependencies are inferred from the claim text.