Osram S.p.a. - Societa' Riunite Osram Edison Clerici Patente

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A connector for linear lighting devices, comprising:- a first and a second C-shaped connector part (14, 16), which can be snap-engaged with each other,- at least one connecting pin (28) protruding from an inner surface of one of said connector parts (14),- at least one conductive element (30) contained within the thickness (T) of said connector part (14) and electrically connecting said at least one connecting pin (28) to a connection point (32, 38) with a power supply cable (36).

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A method for the production of a housing (12) of a lighting device (10), including: - extruding a profile (34) of polymeric material including a central body (14) transparent or partially diffusive having an outer surface (14a), and - dispensing on said outer surface (14a) of said extruded profile (34) an optical functional layer (18) having the ability to change one or more optical characteristics of the emitted light.

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A lighting device comprises an elongated support member (102) with a sequence of consecutive segments having a first end (10A) and a second end (10B), and light radiation sources (e.g. LEDs) distributed along the support member (102) in a sequence of electrical units (10) arranged at respective segments of the support member. The electric units (10) comprise a plurality of sets of electrically-powered light radiation sources (D11, D12, D13; D21, D22, D23; D11, D12, D13, D21; D22, D23), electrically arranged in series between a first (LED+) and a second (LED-) power supply node. At least one set (D21, D22, D23; D22, D23) of light radiation sources can be separated from the electrical unit (10) at a cutting line (LC1, LC2) intermediate between the first end (10A) and the second end (10B) of the respective segment of the support member. An electrically-conductive path (12, 13) parallel to the aforesaid separable set (D21, D22, D23; D22, D23) can be activated by separating this set (D21, D22, D23; D22, D23) from the electric unit (10) so as to maintain the electrical coupling between the first (LED+) and the second (LED-) power supply node.

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A cover member (10) for elongated lighting modules (12), e.g. LEDs (122), includes:- an elongated light-propagation body (100) having a light-radiation receiving surface (100a) and a light-radiation emitting surface (S) opposite to the light-radiation receiving surface (100a), the cover member (10) being positionable with the light-radiation receiving surface (100a) facing an elongated light-radiation emission module (12), wherein the light-propagation body (100) provides light-propagation paths for light radiation from the light-radiation receiving surface (100a) to the light-radiation emitting surface (S), wherein:- the light-propagation body (100) comprises light-diffusive material (with consequent mixing of the light that propagates along the aforesaid light-propagation paths), and- a light-obstructive barrier (200) provided at the light-radiation receiving surface (100a) leaving at least one lateral portion of the light-radiation receiving surface (100a) uncovered, so that the aforesaid light-propagation paths include tortuous light-propagation paths through said at least one side portion circumventing the light-obstructive barrier (200) .

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A lighting system includes: - an elongated lighting device (100), e.g. a LED device, including a front light emission surface (122) and a back surface opposite said front surface, - a fixation element (10) coupleable to a mounting structure (S). The lighting device (100) and the fixation element (10) include complementary formations (10b, 100b) mutually engageable in a form-coupling relationship.

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An electrically-powered lighting device (10), which may implemented e.g. as a C5w lamp, includes: - a first (121) and a second (122) electrical supply contact, - one or more light emitting diodes (LEDs - 14) set between a first terminal (141) and a second terminal (142), the light emitting diode(s) (14) being conductive from the first terminal (141) towards the second terminal (142), and - a rectifier circuit including: - first (D1) and second (D2) rectifier branches, being conductive from said first supply contact (121) towards the first terminal (141) and from the second terminal (142) towards the second supply contact (122), respectively, and - third (D3) and fourth (D4) rectifier branches, being conductive from the second supply contact (122) towards the first terminal (141) and from the second terminal (142) towards the first supply contact (121), respectively.

A support member for lighting devices (10) comprising a thermally-conductive elongated body (100) extending in a longitudinal direction (X10) with several pairs (141a, 141b; 142a, 142b) of heat exchange surfaces for mounting light sources (161a, 161b; 162a, 162b) provided on the elongated body (100), with the surfaces of each pair (141a, 141b; 142a, 142b) being mutually opposed transversely with respect to the longitudinal direction (X10). The pairs of mounting surfaces (141a, 141b; 142a, 142b) are staggered from each other along the longitudinal direction (X10) of the body (10).

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A casing for lighting devices, e.g. for mounting in gypsum ceilings comprises an elongate, channel-shaped body (12) having an inner surface inwardly of the channel shape and an outer surface outwardly of the channel shape, wherein. The channel-shaped body (12) comprises a corner portion (120) extending at a longitudinal intermediate plane (X12) of the body (12) and two lateral arms (122) extending from the corner portion (120) away from the intermediate plane (X12) of the body (12). The lateral arms (122) have respective distal end edges (122a) extending in a same direction on opposite sides of the intermediate plane (X12) of the body (12), with an open mouth portion of the body (12) between the distal end edges (122a) with the lateral arms (122). The lateral arms (122) comprise longitudinal snap coupling formations (124) extending lengthwise of the respective lateral arm (122) at a position of the outer surface of the channel-shaped body (12) between the corner portion (120) and the distal end edge (122a) of the respective lateral arm (122) as well as distal coupling formations (126) extending lengthwise of the respective lateral arm (122) at the distal end edge (122a) of the lateral arm. A strip-like light-permeable closure lid (14) for the open mouth portion of the channel-shaped body (12) is provided having lateral coupling formations (142) complementary to and coupleable with the distal coupling formations (126) of the lateral arms (122) of the channel-shaped body (12).

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Described herein is a lighting system comprising a power-supply circuit and at least two strings of solid-state light sources. The power-supply circuit comprises two output terminals, wherein the power-supply circuit supplies a regulated voltage ( V out ), wherein the regulated voltage ( V out ) is periodically activated for a first duration and de-activated for a second duration as a function of a dimming signal. A first string (22a) of light sources and a first current regulator (24a) are connected in series between the two output terminals, wherein the first current regulator (24a) is configured for regulating the current flowing through the first string (22a). A second string (22b) of solid-state light sources and a second current regulator (24b) are connected in series between the two output terminals, wherein the second current regulator (24a) is configured for regulating the current flowing through said second string (22b). In particular, the system comprises means (28) configured to activate the current flowing through the first string (22a) when a given time has elapsed since a rising edge of the regulated voltage ( V out ) and to deactivate the current flowing through the first string (22a) simultaneously with a falling edge of the regulated voltage ( V out ).