Automotive lighting device heat exchange system with an intermediate portion having modified air duct arrangement
US12203629B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 21, 2022 |
| Grant date | Jan 21, 2025 |
| Priority date | — |
| Expiry date | Apr 21, 2042 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF21S45/48
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A heat exchange system of a vehicle lighting device. The heat exchange system includes an air duct that is arranged facing a heat sink for transferring heat by the light sources of the lighting device. The air duct includes an air inlet portion with a first air passage area receiving an airflow into the air duct and an air outlet portion with a second air passage area directing the airflow towards a heatsink. In addition, an intermediate portion is disposed between the air inlet portion and the air outlet portion. The intermediate portion is having a variable cross-section in a non-linear way. The largest section of the intermediate portion is superior to the section of both the first air passage area and the second air passage area.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.