Illuminance device having an opening at a rear part of a gas discharge lamp and exposes the burner and projection system
US8164047B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 17, 2009 |
| Grant date | Apr 24, 2012 |
| Priority date | — |
| Expiry date | Dec 28, 2030 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01J61/52
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An illuminance device including a gas discharge lamp, an airflow generator, and a distributing duct is provided. The lamp has a reflector, a base connected to the reflector, a burner installed in the reflector, and the base, a first opening located at the reflector and a front part of the lamp, and a second opening located at a rear part of the lamp and exposing the burner. The distributing duct has an inlet, a first outlet, and a second outlet, and an opening area of the first outlet is larger than that of the second outlet. A cooling airflow provided by the airflow generator enters the distributing duct via the inlet, the distributing duct guides a part of the cooling airflow to the first opening via the first outlet, and the distributing duct guides another part of the cooling airflow to the second opening via the second outlet.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.