Light fixture with self-test ability of sealing
US11988373B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | May 23, 2023 |
| Grant date | May 21, 2024 |
| Priority date | — |
| Expiry date | May 23, 2043 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF21W2131/406
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A light fixture with self-test ability of sealing includes a light head with a head housing, a light source for emitting light and generating heat, and a temperature sensor and an air pressure sensor for respectively detecting the temperature and air pressure inside the head housing are provided in the head housing. A controller is further included for determining the sealing performance of the head housing based on the detection results of the temperature sensor and the air pressure sensor. The head housing is provided with a waterproof breathable valve allowing the internal space of the head housing in air communication with the external space of the light fixture. A switch is configured which is capable of switching between two states by unblocking/blocking the waterproof breathable valve to make the internal space of the head housing in air communication with the external space of the light fixture or not.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.