Light emitting diode disc optic with heat sink housing
US8297801B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 10, 2004 |
| Grant date | Oct 30, 2012 |
| Priority date | — |
| Expiry date | Oct 12, 2027 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF21S45/48
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A lamp (10) has a cup-shaped body (12) with a planar bottom (14) with an up-standing, peripheral sidewall (16) defining a top (18). The body (12) is thermally conductive and preferably is a metal such as aluminum. A reflective coating (20) is provided on the inside surface of the planar bottom (14) and side wall (16) for reflecting light generated by a single, side emitting LED (22) that is mounted on a thermally conductive, electrically insulating coupling (24) and is positioned substantially in the center of the planar bottom (14). A lens (26) for directing a beam of light emitted from the LED (22) in a desired direction is provided and preferably is a Fresnel optic. The lens (26) can close the opening (18) as shown in FIG. 1 or it can be formed as an integral part of bottom (14) or it can be added to the bottom (14), as shown in FIG. 2. Alternatively, the lens (26) can be solid with the lens elements either external (FIG. 4) or internal (FIG. 5). Electrical connections (28, 30) to the LED extend through the cup-shaped body (14).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.