Abstract: A lighting system is provided. The lighting system includes at least one light-emitting diode and a monitoring output, and a fault signal is present at the monitoring output in the event of a defect of the light-emitting diode during operation of the lighting system. The lighting system also includes a switch for switching a connection between a current source and the light-emitting diode. The lighting system further includes a comparator which is coupled with the monitoring output and the switch. The current source is disconnected from the light-emitting diode in an activated state of the switch, and the comparator is configured to switch the switch into the activated state when the fault signal is present at the monitoring output.

Abstract: A LED filament for an omnidirectional lamp comprises two longitudinal filament sections, and each filament section includes a plurality of LEDs. The two filament sections are electrically conductively connected by a flexible connecting section. A lamp using such LED filaments provides a light distribution having an increased homogeneity.

Abstract: The present invention relates to a luminous means (1) comprising an enveloping bulb (3), a base (4), a first LED (21a) and a second LED (21b), which are assembled on a planar printed circuit board (2), to be precise on the opposite sides (20) thereof in relation to a thickness direction, wherein a first diverging lens (5a) is mounted on the first side (20a) of the printed circuit board (2) in a manner assigned to the first LED (21a) and a second diverging lens (5b) is mounted on the second side (20b) of the printed circuit board (2) in a manner assigned to the second LED (21b) for the purposes of homogenizing the light distribution generated by the luminous means (1), and the light emitted by the respective LED (21) has a widened luminous intensity distribution downstream of the respective diverging lens (5) in comparison with upstream of the respective diverging lens (5).

Abstract: The invention relates to a tube (42) for a semiconductor tubular lamp (41), which tube has at least one holding projection for holding at least one printed circuit board (5) on the inside of the tube, wherein the tube (42) is a glass tube, and the at least one holding projection is an inwardly bulging, reshaped burling region (43-46) of the tube (42). A semiconductor tubular lamp (41) has a tube (42) and at least one printed circuit board (5) fitted with a semiconductor light source (6), which is accommodated in the tube (42) and is held transversely to a longitudinal direction (L) of the tube (42) by means of at least one burling region (43-46) in a form-fitted manner. A method serves to produce a tube (42), wherein the tube (42) is provided, locally heated, and pressed inwardly at the at least one locally heated point for generating the at least one burling area (43-46).

Abstract: A lighting device comprises at least two groups of light-emitting diodes and an electronic circuit for controlling said light-emitting diodes. The electronic circuit is configured to control each group of light-emitting diodes separately. The beam characteristic of at least one of the groups of light-emitting diodes differs from the beam characteristic of at least one of the other groups of light-emitting diodes. As a result, the light distribution of the lighting device can be switched electronically.

Abstract: The present invention relates to a luminous means (1) having LEDs (23) on a substrate (2), an outer bulb (3) in which the substrate (2) having the LEDs (23) is arranged, and a cap (4), wherein at least two partial surfaces (2a) of the substrate (2) are folded out with respect to the remaining substrate (2b) around a bridge area (25) in each case, via which the particular partial surface (2a) is connected to the remaining substrate (2b), and are thus set obliquely with respect to the remaining substrate (2b) which is flat per se, wherein, for each side surface of the remaining substrate (2b), which side surfaces are opposite one another with respect to a thickness direction of the remaining substrate (2b), at least one partial surface (2a) is folded out in each case, and wherein at least one of the LEDs (23) is arranged on each of the partial surfaces (2a).

Abstract: A semiconductor lamp comprises a housing in which a driver is accommodated and at least one contact pin protruding from the housing outwards, wherein the contact pin is tubular and riveted to the housing and the driver is connected to the contact pin via an electrically conductive connection element which is inserted into a cavity of the contact pin. A method serves for producing a semiconductor lamp, wherein at least one tubular contact pin is inserted into a feedthrough of a housing from outside till the contact pin abuts the housing, the contact pin is next riveted with the housing on the inside and a driver is inserted into the housing, whereby an electrically conductive connection element is inserted into the contact pin. The invention is particularly applicable to LED retrofit lamps for replacing bipin halogen lamps, in particular MR16 lamps.

Abstract: In different embodiments, a low-pressure discharge lamp (1) is provided. The low-pressure discharge lamp has a discharge vessel (2) and a coating structure (7). The coating structure is formed on an inner face of the discharge vessel (2). The coating structure (7) has first fluorescent particles (34) which have at least one fluorescent substance that emits red light and the average particle size of which ranges from 0.5 ?m to 1.9 ?m, second fluorescent particles (36) which have at least one fluorescent substance that emits green light and the average particle size of which ranges from 0.6 ?m to 2.8 ?m or from 1 ?m to 4 ?m, and third fluorescent particles (38) which have at least one fluorescent substance that emits blue light and the average particle size of which ranges from 1 ?m to 4 ?m.

Abstract: Various embodiments may relate to a semiconductor retrofit bulb, in particular a retrofit festoon bulb, having connecting elements that are arranged on two sides. The semiconductor retrofit bulb may include at least a tubular cooling body having at least one outer face support surface, wherein there is arranged on the support surface at least one semiconductor light source, in particular a light diode, a driver housing that is introduced into a hollow space of the tubular cooling body. At least one flow channel is provided between the driver housing and the cooling body.

Abstract: Various embodiments may relate to a lamp holder of a lighting module, including a first housing and a second housing made from different materials, wherein the second housing includes a body part and an assembling part in thermal contact with each other, wherein the second housing is embedded integrally in the first housing and in thermal contact with the first housing, and the assembling part and the body part are installed together. In addition, various embodiments further relate to a method for manufacturing the lamp holder and an illuminating device having the lamp holder.

Abstract: A phosphor for low-pressure discharge lamps is disclosed, wherein the phosphor is present in the form of phosphor grains coated with a protective layer, wherein the protective layer consists of a metal oxide, a metal borate, a metal phosphate or mixtures thereof.

Abstract: The present invention relates to a drive device for an illuminating load, an illumination device, a lighting system and a method for controlling the lighting system, wherein the drive device is connected between the illuminating load and a power adapter device for power supply, wherein the drive device comprises a control unit, wherein the control unit is configured to adjust the impedance of the drive device according to an electric output signal measured from the illuminating load so as to accordingly adjust the output voltage of the power adapter device and thereby to adjust the electric output signal for the illuminating load.

Abstract: A LED lighting device is disclosed, which includes a LED lighting source, a printed circuit board, a heat sink and a transparent cover. The LED lighting source is provided on the printed circuit board, and the cover is attached to the heat sink for protecting the LED lighting source and the printed circuit board. The LED lighting device further includes a rivet made of plastics, which is used to fix the printed circuit board to the heat sink.

Abstract: Various embodiments relate to a semiconductor bulb, including a housing, and at least one semiconductor light source that is arranged on the housing. The housing includes a rearward base region that is embodied from an electrically non-conductive material for the purpose of engaging in a bulb socket. At least one electrical contact element is arranged on the base region for the purpose of contacting the bulb socket. The base region is embodied for the purpose of arranging electrical contact elements of different base types.

Abstract: A lamp includes a tubular glass bulb with open end sides, at least one elongate carrier, inserted into the glass bulb, for at least one light strip, at least one elastic diffuser layer which is introduced into the glass bulb, and two bases which are fitted onto the open end sides of the glass bulb. The at least one light strip has a strip-shaped circuit board with a front-side conduction structure and with at least one semiconductor light source which is electrically connected thereto. The conduction structure is electrically connected to at least one of the bases. The at least one diffuser layer arches over the at least one semiconductor light source and the at least one conduction structure in a contact-free fashion at least over a length between the bases. The at least one diffuser layer is latched to the at least one carrier.

Abstract: A lighting device may include: a board having a front surface and a back surface, and a board attachment base provided with an attachment surface smaller than the area of the back surface, an opposing surface larger than the area of the attachment surface and which opposes the attachment surface, and a lateral surface which extends out from the periphery of the attachment surface towards the periphery of the attachment surface, the board having a light source mounted in a section of the back surface region which is not abutted by the attachment surface.

Abstract: A bulb for a semiconductor luminous device is provided. The bulb is three-dimensionally extended and includes at least one optically effective surface structure. A semiconductor luminous device may include at least one semiconductor light source and an optically transmissive bulb for transmitting light emitted by the at least one semiconductor light source, the bulb being three-dimensionally extended and comprising at least one optically effective surface structure, wherein the bulb encloses at least one semiconductor light source.