Lamp assembly having variable focus and directionality
US7220029B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 10, 2005 |
| Grant date | May 22, 2007 |
| Priority date | — |
| Expiry date | Aug 4, 2025 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60Q3/85
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A lighting assembly (10) is adjustable between flood and spot lighting conditions for selectively illuminating an interior passenger compartment in a motor vehicle. The assembly (10) includes a housing (16) which clamps to a supporting member, such as a headliner (12), via a sleeve (18) interacting with a rotary cam lock (22). An LED light source (26) is orbitally supported within the housing (16) for projecting light in a directionally adjustable manner. A lens (50) is disposed in the light path (28) and is moveable between an extended spot position for task lighting and a retracted flood position for general illumination within the interior compartment. A switch (74) is responsive to movement of the lens (50) into its spot position for automatically energizing the LED (30). The switch (74) opens, thus de-energizing the LED (30) when the lens (50) is returned to its flood condition. A lighting control circuit (78, 78′) is responsive to an override signal, such as from a door switch (80, 80′), for independently activating the light source (26) when the lens (50) is in its flood position. The light source (26) is supported for orbital movement within the housing (16) by a gimbal mec…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.