ILLUMINATING DEVICE FOR VEHICLE CEILING LAMP

The invention relates to a device for generating light, in particular for a vehicle passenger compartment ceiling lamp (100), comprising: a separating tube (7) made of a material that is opaque to the radiation used, which is intended to be placed in an aperture (101) forming an exit for the illuminating light, is tubular along an axis orthogonal to the aperture and is of "c"-shaped radial cross section, forming an axial window (71), a bounding light guide (53) encircling the separating tube (7) having an annular exit dioptric interface (55), a base (57) in the axial extension of the exit dioptric interface, axial extensions (59), extending axially at least in segments the base (57), comprising entrance dioptric interfaces (61), which are placed facing bounding light sources (51), an illuminating light guide (33), which is located axially facing the illuminating light source (31) of the separating tube and axially removed from the aperture (101) comprising an entrance dioptric interface (35), which is placed facing an illuminating light source (31), a total reflection surface (39), from which light entering via the entrance dioptric interface (35) is reflected at a predefined angle of inclination with respect to the normal to the entrance dioptric interface (35), and an exit dioptric interface (37), via which the light reflected from the total reflection surface (39) is emitted in the direction of the aperture (101).