SSL lamp for replacing gas discharge lamp
US11022258B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 23, 2017 |
| Grant date | Jun 1, 2021 |
| Priority date | — |
| Expiry date | Nov 23, 2037 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF21Y2115/10
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A solid state lighting lamp (10) for replacing a gas discharge lamp (1) having a light emission area (3) with a given light center length (A) and a given light emission area length (B) is disclosed. The solid state lighting lamp comprises a base portion (11) including a connector (12); an upper portion (13) opposite said base portion; and a plurality of linear arrays of solid state lighting sources (17) mounted on a body (21) and extending in parallel with a central axis (30) of the lamp, each linear array having a central point within 10% tolerance of the given light center length from the connector, wherein, for each linear array: an upper solid state lighting source (17a) lies on an upper virtual conical surface (30) extending from a point of said central axis coinciding with an upper edge of the light emission area under a first internal angle (α) between said central axis and the upper virtual conical surface in a range 40-85°; and a lower solid state lighting source (17b) lies on a lower virtual conical surface (40) extending from a further point of said central axis coinciding with a lower edge of the light emission area under a second internal angle (β) between said central…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.