Abstract: A lighting system has at least one luminaire having a connection portion, and has a fastening device, with a housing; an electrical contact-making connection, which can be detachably inserted into a supply connection of the luminaire, which supply connection is formed in the connection portion; at least one retaining pin, which has a securing portion, wherein the retaining pin, in a fitted state of the fastening device, extends through a slot formed in the connection portion of the luminaire, and the securing portion of the retaining pin is engaged behind a region of the connection portion that defines the slot; and a fastening portion for fastening a retaining cord and/or for connecting the terminals of an electrical supply cable.

Abstract: A lamp is disclosed, which has a lamp housing, having an end wall and a side wall, a lighting means device arranged in a housing interior having a lighting means carrier and at least one lighting means arranged thereon, an insulation component formed from an electrically insulating material having a main portion and an edging portion, wherein the main portion is arranged between the end wall and the lighting means device and wherein the edging portion extends from the main portion in such a way that the edging portion is arranged between the lighting means device and the side wall of the lamp housing.

Abstract: A training device for monitoring a physical exercise is formed having a volume element, a sensor apparatus which is designed to detect a mechanical force and/or a pressure which a user exerts on the volume element while performing the physical exercise, and to generate a measurement signal on the basis of the detected force and/or the detected pressure, and an evaluation apparatus which is designed to compare the measurement signal generated by the sensor apparatus with a value range and/or a target value and to automatically generate an output signal on the basis of the result of the comparison.

Abstract: A luminaire for installing in a grid ceiling includes at least one catch which is arranged in such a way on the luminaire and designed such that the at least one catch snaps into place automatically behind a portion of an element of the grid ceiling and thus engages behind the portion of the element of the grid ceiling in order to hold the luminaire on the grid ceiling. In addition, an assembly for a grid ceiling includes at least one ceiling profile element and at least one such luminaire.

Abstract: A lighting arrangement has a housing having an interior and a light outlet region, and at least one light-providing device. The light-providing device is configured such that it can be arranged within the interior to emit light during operation through the light outlet region to the outside. The light-providing device can be coupled to the housing and can be freely positioned at least within one region of the interior. A second lighting arrangement has a housing having an interior and a light outlet region, the housing having an opening, which is set up to guide at least one line through the opening out of the interior. The second lighting arrangement has at least one brush, which is provided with hairs or fibres or bristles, which are arranged in the opening and/or cover the opening at least in portions.

Abstract: A control circuit for a voltage converter has a switch which has a multiplicity of parallel-connected current-conducting branches with resistors with different resistance values, and a contact maker. The contact maker is configured to connect selectively in each case one of the multiplicity of parallel-connected current-conducting branches to an input contact of the switch. The control circuit also includes a detector circuit which is configured to determine a voltage drop across the resistors and to output, as a function of the determined voltage drop, an actuation signal for setting a setpoint output current of the voltage converter to the voltage converter.

Abstract: An interior light, in particular for shelf or display case illumination, includes an adjustment unit, which has a lens; a main body, which has a cylindrical recess inside which a lighting means is arranged; at least one guide which is provided on the recess and extends parallel to a cylinder axis of the recess; and latch means which are arranged in the region of the recess and have a plurality of latching stages, the adjustment unit having mating latch means which can latch to the latch means and guide means for guiding the adjustment unit in the guide; the guide means being arranged in each case at different positions within the guide when the mating latch means latch to the different latching stages, and a different distance being set between the lighting means and the lens in each case.

Abstract: A training device for monitoring a physical exercise is formed having a volume element, a sensor apparatus which is designed to detect a mechanical force and/or a pressure which a user exerts on the volume element while performing the physical exercise, and to generate a measurement signal on the basis of the detected force and/or the detected pressure, and an evaluation apparatus which is designed to compare the measurement signal generated by the sensor apparatus with a value range and/or a target value and to automatically generate an output signal on the basis of the result of the comparison.

Abstract: A luminaire for installing in a grid ceiling includes at least one catch which is arranged in such a way on the luminaire and designed such that the at least one catch snaps into place automatically behind a portion of an element of the grid ceiling and thus engages behind the portion of the element of the grid ceiling in order to hold the luminaire on the grid ceiling. In addition, an assembly for a grid ceiling includes at least one ceiling profile element and at least one such luminaire.

Abstract: The invention relates to a planar strip light for installation in a plasterboard construction, wherein the strip light comprises an optical unit which has a reflector and an LED panel, wherein the light-emitting side of the LED panel is arranged at the edge of the reflector and substantially perpendicular to the reflector in order to reduce the installation depth of the strip light, and wherein the strip light comprises fasteners for its direct fastening to the plasterboard construction.