Abstract: A self-regulating power supply (601, 901) for a led light source comprises a drive power input (602, 603) and a lighting output (604, 605, 904, 905), and therebetween a converter (606, 906) for generating a supply voltage and a supply current from drive power. In addition, it comprises voltage regulating means (607, 907), current regulating means (608, 908), and a control unit (609, 909) which controls said voltage and current regulating means (607, 608, 907, 908). The control unit (609, 909) is arranged to change (701, 802) the supply voltage in a controlled manner to detect where an operating voltage range of the led light source lies, and to measure (703, 803, 806) a value of the supply current in the operating voltage range. It deduces (702, 704) a nominal maximum value of the supply current at least partly on the basis of the measurement of the value of the supply current, and sets (705) the deduced nominal maximum value of the supply current as a target value of the supply current.

Abstract: A LED strip having LED chips and a strip to which the LED chips are fixed and which also functions as a support structure of conductors coupled with the LED chips, and a tube manufactured from an elastic and at least partly light-transmitting material and surrounding the strip with the LED chips. At the outer surface of the tube there is a fixing element which is in essential parts of the same material as the tube. The LED strip includes a thermal conduction part which is of a material different from the tube and which, in the cross-section of the LED strip, is directed outwards from the inner surface of the tube for conducting waste heat generated in the LED chips out from the tube.

Abstract: A combined luminaire and air conditioning nozzle includes a front panel (101) with an opening. A nozzle frame (103) is pivotably connected to the opening of the front panel (101) so as to separate an air cavity (105) located behind the front panel (101) from a front side of the front panel (101). The structure includes a controller element (106) with a closing mechanism mechanically coupled thereto and arranged to adjustably limit an air passage (107) from the air cavity (105) to the front side of the front panel (101) in response to a movement of the controller element (106). A luminaire element (108) forms part of the closing mechanism and is provided with a light source arranged to output light to the front side of the front panel (101). The closing mechanism is arranged to convert a movement of the controller element (106) into a movement of the luminaire element (108), so that said adjustable limiting of the air passage (107) occurs as a result of said movement of the luminaire element (108).

Abstract: A LED strip having LED chips and a strip to which the LED chips are fixed and which also functions as a support structure of conductors coupled with the LED chips, and a tube manufactured from an elastic and at least partly light-transmitting material and surrounding the strip with the LED chips. At the outer surface of the tube there is a fixing element which is in essential parts of the same material as the tube. The LED strip includes a thermal conduction part which is of a material different from the tube and which, in the cross-section of the LED strip, is directed outwards from the inner surface of the tube for conducting waste heat generated in the LED chips out from the tube.

Abstract: An electronic device (201) of a transportation means comprises a power bus input interface (202), a power bus output interface (203), and a data bus interface (204). The device comprises voltage reducing means (205) for selectively performing a controlled voltage reduction between the power bus input interface (202) and the power bus output interface (203). The reduced operating voltage is lower than the operating voltage received via the power bus input interface (202) but higher than zero. The device is arranged to use (1201, 1202) said voltage reducing means depending in a predetermined manner on whether or not the device has performed addressing operations to carry out addressed data communication by means of said data bus.

Abstract: An electronic device (201) of a transportation means comprises a power bus input interface (202), a power bus output interface (203), and a data bus interface (204). The device comprises voltage reducing means (205) for selectively performing a controlled voltage reduction between the power bus input interface (202) and the power bus output interface (203). The reduced operating voltage is lower than the operating voltage received via the power bus input interface (202) but higher than zero. The device is arranged to use (1201, 1202) said voltage reducing means depending in a predetermined manner on whether or not the device has performed addressing operations to carry out addressed data communication by means of said data bus.

Abstract: A light module (100, 400, 600, 900, 1600) for a lighting device of a vehicle comprises a light source part and an outer housing (101) enclosing the light source part and having at least a first surface (103) and a second surface (104). The first surface of the outer housing comprises a first interlock shape (201, 202, 1001) and the second surface comprises a second interlock shape (201, 202, 901) arranged to be at least mechanically compatible with the first interlock shape. Two similar light modules are at least mechanically connectable to each other by connecting the first interlock shape of one of the light modules to the second interlock shape of the other light module. At least one of said first and second interlock shapes is continuous in a first direction (105, 905) and periodic in a second direction (106, 906). The first and the second direction are directions parallel to the surface on which the interlock shape is arranged.

Abstract: The control device for the luminaire of a vehicle has an operating power input (401) for receiving operating power, an illumination output (402) for supplying illumination power to one or more light sources (403), and a power converter (404) coupled between said operating power input (401) and said illumination output (402) for converting received operating power into illumination power, which is directed outside. The power converter (404) has a control connection (405). The control device has a control data connection (406) for transmitting control data, and a controller circuit (407) coupled between said control data connection (406) and said control connection (405). The control device has a control power input (408) separate from said operating power input (401) for receiving control power to said controller circuit (407) independently of said operating power, as well as a galvanic isolation (409) between said control circuit (407) and said power converter (407).

Abstract: The control device for the luminaire of a vehicle has an operating power input (401) for receiving operating power, an illumination output (402) for supplying illumination power to one or more light sources (403), and a power converter (404) coupled between said operating power input (401) and said illumination output (402) for converting received operating power into illumination power, which is directed outside. The power converter (404) has a control connection (405). The control device has a control data connection (406) for transmitting control data, and a controller circuit (407) coupled between said control data connection (406) and said control connection (405). The control device has a control power input (408) separate from said operating power input (401) for receiving control power to said controller circuit (407) independently of said operating power, as well as a galvanic isolation (409) between said control circuit (407) and said power converter (407).

Abstract: A lighting assembly comprising a housing (2), a lighting system and a reflector system. The housing (2) has a longitudinal direction, a lateral direction and a height direction which are perpendicular to each other. The lighting system is installed in the housing (2) and configured to produce light and emit the light out from the housing (2), the lighting system comprising a first light source (61). The reflector system is configured for reflecting the light produced by the lighting system out from the housing (2) and comprises a first reflector (41) including a first reflector surface (411) which is a concave surface with a first radius of curvature (r1). The first reflector (41) is also provided with a second reflector surface (412) which is a concave surface with a second radius of curvature (r2) which is larger than the first radius of curvature (r1), a centre of curvature (cc2) of the second reflector surface (412) being spaced from a centre of curvature (cc1) of the first reflector surface (411).

Abstract: A luminaire circuit board and a method for manufacturing a luminaire circuit board. The luminaire circuit board comprises a first set of light source components fastened onto a circuit board and coupled to a circuit for producing illumination. The luminaire circuit board further comprises a second set of light source components, which have substantially the same colour temperature as the light source components of the first set and which are fastened onto the circuit board as electrically isolated from said circuit.

Abstract: A lighting assembly, comprising a housing (2) and a lighting element (6). The housing (2) is manufactured by extrusion from at least one flexible material, and comprises a first housing wall (21), a second housing wall (22) and a third housing wall (23). The first housing wall (21) is pivotably connected to the second housing wall (22) by means of a first flexible hinge (31), and the second housing wall (22) is pivotably connected to the third housing wall (23) by means of a second flexible hinge (32). The lighting element (6) is located inside the housing (2), and arranged to emit light out from the housing (2).

Abstract: A combined luminaire and air conditioning nozzle includes a front panel (101) with an opening. A nozzle frame (103) is pivotably connected to the opening of the front panel (101) so as to separate an air cavity (105) located behind the front panel (101) from a front side of the front panel (101). The structure includes a controller element (106) with a closing mechanism mechanically coupled thereto and arranged to adjustably limit an air passage (107) from the air cavity (105) to the front side of the front panel (101) in response to a movement of the controller element (106). A luminaire element (108) forms part of the closing mechanism and is provided with a light source arranged to output light to the front side of the front panel (101). The closing mechanism is arranged to convert a movement of the controller element (106) into a movement of the luminaire element (108), so that said adjustable limiting of the air passage (107) occurs as a result of said movement of the luminaire element (108).

Abstract: A lighting assembly comprising a housing (2), a lighting system and a reflector system. The housing (2) has a longitudinal direction, a lateral direction and a height direction which are perpendicular to each other. The lighting system is installed in the housing (2) and configured to produce light and emit the light out from the housing (2), the lighting system comprising a first light source (61). The reflector system is configured for reflecting the light produced by the lighting system out from the housing (2) and comprises a first reflector (41) including a first reflector surface (411) which is a concave surface with a first radius of curvature (r1). The first reflector (41) is also provided with a second reflector surface (412) which is a concave surface with a second radius of curvature (r2) which is larger than the first radius of curvature (r1), a centre of curvature (cc2) of the second reflector surface (412) being spaced from a centre of curvature (cc1) of the first reflector surface (411).

Abstract: A lighting assembly, comprising a housing (2) and a lighting element (6). The housing (2) is manufactured by extrusion from at least one flexible material, and comprises a first housing wall (21), a second housing wall (22) and a third housing wall (23). The first housing wall (21) is pivotably connected to the second housing wall (22) by means of a first flexible hinge (31), and the second housing wall (22) is pivotably connected to the third housing wall (23) by means of a second flexible hinge (32). The lighting element (6) is located inside the housing (2), and arranged to emit light out from the housing (2).

Abstract: A lighting device and a method for manufacturing a lighting device, the lighting device comprising an elongated body (10), a cover (20), and one or more light sources (30). The body (10) of the lighting device comprises a bottom (13) and walls (11, 12) extending from the bottom and having open edges, whereby the cover (20) of the lighting device is formed from a light transmitting plastic material tube arranged between the open edges of said walls (11, 12) at a distance from the bottom (13), the one or more light sources (30) being located in a space delimited by the body (10) and the cover (20) of the lighting device, the body of the lighting device comprising at least one curved portion to provide a curved lighting device.

Abstract: A lighting device and a method for manufacturing a lighting device, the lighting device comprising an elongated body (10), a cover (20), and one or more light sources (30). The body (10) of the lighting device comprises a bottom (13) and walls (11, 12) extending from the bottom and having open edges, whereby the cover (20) of the lighting device is formed from a light transmitting plastic material tube arranged between the open edges of said walls (11, 12) at a distance from the bottom (13), the one or more light sources (30) being located in a space delimited by the body (10) and the cover (20) of the lighting device, the body of the lighting device comprising at least one curved portion to provide a curved lighting device.

Abstract: In a light source, a plurality of parallel LED strings or columns (R, G, B) share the same current source (12) as a function of time. Current distribution to the LED strings is carried out with semiconductor switches (Q1, Q2, Q3) that are connected in series with the LED strings. Each semiconductor switch and the corresponding LED string is controlled with a dedicated pulse-width modulated colour control signal (C1, C2, C3). The pulse-width modulated control signals control the semiconductor switches (Q1, Q2, Q3) and the LED strings (R, G, B) sequentially active one at a time and to take current from the common current source (12) for the time defined by the corresponding pulse-width modulated control signal (C1, C2, C3). This control establishes colour tone and colour temperature adjustment, which is independent of the operation of the shared current source.

Abstract: In a light source, a plurality of parallel LED strings or columns (R, G, B) share the same current source (12) as a function of time. Current distribution to the LED strings is carried out with semiconductor switches (Q1, Q2, Q3) that are connected in series with the LED strings. Each semiconductor switch and the corresponding LED string is controlled with a dedicated pulse-width modulated colour control signal (C1, C2, C3). The pulse-width modulated control signals control the semiconductor switches (Q1, Q2, Q3) and the LED strings (R, G, B) sequentially active one at a time and to take current from the common current source (12) for the time defined by the corresponding pulse-width modulated control signal (C1, C2, C3). This control establishes colour tone and colour temperature adjustment, which is independent of the operation of the shared current source.

Abstract: The present disclosure describes a boost converter for supplying current to a series connection of light-emitting diodes (LEDs). A duty ratio of the main switch of the converter is configured to be controlled on the basis of a current feedback signal. The current feedback signal is formed as a weighted average of at least two signals including a first signal representing the current through the series connection of LEDs and a second signal representing a current through the main switch.