Plant growth lamp having concentrical rings of different colors LED chips
US11320128B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Aug 17, 2020 |
| Grant date | May 3, 2022 |
| Priority date | — |
| Expiry date | Oct 29, 2040 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF21Y2115/10
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A lamp includes a main lamp body, a plurality of red light sources, a plurality of blue light sources, a plurality of white light sources, a driving board connected to the light sources to drive them to emit light, a main control circuit configured to control the driving board, and a switching circuit with a multi-position switch. The red, blue and white light sources are arranged in corresponding concentrical rings, with the red light sources in a central ring, the blue light sources in a middle ring, and the white sources in an outer ring. The multi-position switch is switched to provide input signals to the main control circuit, such that the light sources are driven to output different spectrums to meet desired plant growth spectrums.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.