Vehicular headlamp
US7261448B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 1, 2004 |
| Grant date | Aug 28, 2007 |
| Priority date | — |
| Expiry date | Nov 1, 2024 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF21Y2115/10
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
Whereas a light source bulb is used as a light source of a basic lamp piece unit which needs a large amount of irradiating light, with regard to an additional lamp piece unit lighted on and off repeatedly in accordance with a situation of running a vehicle, a semiconductor light emitting element having a fast response speed in being lighted on and off and excellent in durability against repeatedly lighting on and off the semiconductor light emitting element 64 as a light source thereof. Thereby, light can be irradiated in correspondence with the situation of running the vehicle and life of the light source can sufficiently been ensured. Further, the additional lamp piece unit is made to be able to be compactly constituted to promote a degree of freedom of arranging the additional lamp piece unit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.