Lighting arrangement at a refrigerator or freezer cabinet
US5873646A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 20, 1997 |
| Grant date | Feb 23, 1999 |
| Priority date | — |
| Expiry date | Mar 20, 2017 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF25D2400/04
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A lamp (34) for a refrigerator or freezer cabinet is located forwardly and above a horizontal edge (38) of an access opening (16) to a storage space (12) for goods in the cabinet. The lamp (34) illuminates the space (12) through the access opening by means of a reflector (36). The reflector (36) includes a cylindrical part (52) having a semi-elliptical cross-sectional shape. A concave side of the cylindrical part (52) faces the access opening (16). The lamp has a filament (42) which shines in the shape of a line (44) running parallel to the edge (38) and through one (42) of the focal points of the ellipse. The other focal point (58) of the ellipse is located quite close to and outside the edge (38), so that the light from the filament (42) first is reflected by the cylindrical part (52) of the reflector (36) and then passes through the other focal point (58) on its way into the space (12).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.