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US 8,602,601 B2Granted
LED downlight retaining ring
AssigneeKoninklijke Philips N.V.
InventorsMohamed Aslam Khazi, Kenneth Czech, Peter Franck, Alejandro Mier-Langner
Life of this patent
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Abstract
An LED downlight comprises a primary reflector having an upper end and an open lower end, an LED printed circuit board assembly disposed in the upper end of the reflector, an optical assembly positioned beneath the LED printed circuit board assembly, a secondary reflective ring positioned beneath the LED printed circuit board assembly and within the primary reflector housing, the secondary reflector ring supporting the optical assembly and improving light distribution.
Claims20
An LED downlight, comprising:
- a primary reflector having an upper end and an open lower end attachable to a ceiling;
- an LED printed circuit board assembly disposed in said upper end of said primary reflector;
- an optical assembly positioned beneath said LED printed circuit board assembly;
- a secondary reflective ring for improving light distribution positioned beneath said LED printed circuit board assembly and within said primary reflector, said secondary reflector ring supporting said optical assembly on a mixing chamber disposed within said primary reflector.
1 more element
An LED ceiling downlight, comprising:
- an LED array disposed on a printed circuit board;
- a mixing chamber disposed within a primary reflector, said LED array positioned near an upper end of said primary reflector;
- a retaining ring having a reflective inner surface positioned within said primary reflector;
- an optical assembly disposed within said retaining ring;
- said mixing chamber capturing said optical assembly within said retaining ring;
- said retaining ring inner surface being beveled and distributing a light pattern downward and centrally beneath said downlight.
3 more elements
An LED downlight, comprising:
- a primary reflector having an upper end and a lower open end attachable to a ceiling;
- a LED printed circuit board assembly disposed near said upper end of said primary reflector;
- a mixing subassembly depending downwardly toward a lens, said mixing subassembly receiving light from said LED printed circuit board assembly, said lens beneath said LED printed circuit board assembly;
- a retaining ring receiving said lens, said retaining ring disposed within said primary reflector;
- said retaining ring further comprising an angled inner reflective surface.
2 more elements
Dependencies are inferred from the claim text.