LIGHT SOURCE WITH LIGHT EMITTER ARRANGED INSIDE TRANSPARENT EXTERNAL FLASK Russian patent published in 2015 - IPC F21K99/00 

FIELD: electricity.

SUBSTANCE: invention relates to lighting engineering. The light source (10, 12) contains a light emitter (20) installed inside a transparent external flask (30, 32), comprising the light-emitting device (40) and the transparent internal flask (50), at least, partially enclosing the light-emitting device. The transparent internal flask has a diffuser containing luminescent material intended for transformation of light with the greater wavelength. The diameter (d_i) of the transparent internal flask is less than the diameter (d_o) of the transparent external flask. The transparent external flask is connected with the non-transparent base (60) and is fitted with an additional diffuser. The transparent external flask has a centreline (S). The imaginary plane (P) of the base is set, essentially, perpendicularly to the centreline (S) and is intersected with the connection point (C), which is a part of the transparent external flask. The light emitter is arranged inside the transparent external flask at a distance from the imaginary plane of the base far from the base.

EFFECT: improvement of illumination quality at the expense of increase of the profile of spatial radiation of a light source.

19 cl, 8 dwg