Abstract: The present invention relates to a built-in light fixture to be fitted in a suspended ceiling or similar, with a mounting ring (4) insertable into an opening in the ceiling and fixable by holding elements (6) and a light unit (3) which is attached in particular releaseably to the mounting ring (4), wherein fixed to the mounting ring (4) is a support frame (13) which defines a mounting space for the light unit (3) and has on its upper side facing away from the mounting ring (4) attachment means (18) for fixing the light unit (3) onto the support frame (13).

Abstract: A lighting installation has two light fixtures which each have an illuminant in a horizontal burning position and a box reflector surrounding the illuminant. The box reflectors of the two light fixtures are each designed to produce half bat wing light distributions. The two light fixtures are positioned parallel to one another such that they together produce bat wing distribution and the two light fixtures can be adjusted in relation to one another.

Abstract: The present invention relates to a built-in light fixture to be fitted in a suspended ceiling or similar, with a mounting ring (4) insertable into an opening in the ceiling and fixable by holding elements (6) and a light unit (3) which is attached in particular releaseably to the mounting ring (4), wherein fixed to the mounting ring (4) is a support frame (13) which defines a mounting space for the light unit (3) and has on its upper side facing away from the mounting ring (4) attachment means (18) for fixing the light unit (3) onto the support frame (13).

Abstract: A housing has two housing modules that are releasably connected to one another. The housing modules are releasably connected to one another at oppositely located wall regions via corresponding pairs of slots and hooks in engagement therewith. A snap-lock device is provided which locks the housing modules in the connected state in order to prevent unintentional release.

Abstract: A lighting installation has two light fixtures which each have an illuminant in a horizontal burning position and a box reflector surrounding the illuminant. The box reflectors of the two light fixtures are each designed to produce half bat wing light distributions. The two light fixtures are positioned parallel to one another such that they together produce bat wing distribution and the two light fixtures can be adjusted in relation to one another.

Abstract: A housing has two housing modules that are releasably connected to one another. The housing modules are releasably connected to one another at oppositely located wall regions via corresponding pairs of slots and hooks in engagement therewith. A snap-lock device is provided which locks the housing modules in the connected state in order to prevent unintentional release.

Abstract: The invention describes an interior luminaire, in particular for the illumination of merchandise display surfaces, having a transparent luminaire shade (2) and an optical system (5, 6) with a light-emitting means (5), which is characterized in that the optical system (5, 6) is positioned in a light-emitting means space (3) provided above the luminaire shade (2) and radiates light into the luminaire shade through a light entry opening (2a) on the upper side thereof; and that an inwardly projecting, diffusely reflecting flange (9), which reflects at least a portion of the emerging light back into the luminaire shade (2), is provided at the lower rim of the luminaire shade (2).