Abstract:
A lighting device (10), comprising a light engine housing (11), a light engine (18) comprising one or more solid state light emitters (38), a diffuser (49) and an energy forwarding element (40) which receives AC voltage and supplies power to the light engine (18). The light engine housing (11) comprises an electrical connection region (16) which is engageable with an electricity supply device (17). The light engine housing (11) comprises a first compartment (30), in which the light engine (19) is positioned and a second compartment (29). The light engine housing comprises a flange region (36). The first compartment (30) has an opening (20) which is covered by the diffuser. The lighting device can be mounted such the only elements which are visible from a room are the flange region (36), a front side (23) of the diffuser and any portion of the first compartment (30) which is between the opening (20) and the open end (19) of the light engine housing. The light engine housing (11) can comprise heat-dissipating fins (50).
Abstract:
A sign comprising a surface having a display, and a plurality of sources of visible light. The sources of visible light are oriented to illuminate at least a portion of the display, and include solid state light emitters and/or luminescent materials. Line segments drawn on a Chromaticity Diagram connecting coordinates of some of the illumination color hues define a shape which encompasses coordinates of the display color hue(s). Also, a sign comprising a surface having a display having a surface area of at least 4 square meters, and at least 100 sources of visible light including solid state light emitters and/or luminescent materials. Also, a sign comprising a white light source and at least one additional source of light. Also, methods of illuminating signs.
Abstract:
Lighting devices (13) which comprise a connector portion, a light emitter (15), a casing (16) and a heat transfer component (14). At least a first portion of the heat transfer component which is in contact with the casing is spaced farther from an axis of the connector portion than a second portion of the heat transfer component. Also, fixtures comprising a housing, a socket (12) and at least one heat transfer component. Also, lighting assemblies comprising a housing, a socket, a heat transfer component and a lighting device which comprises a light emitter and a casing, respective portions of the heat transfer component being in contact with the casing and with the housing. Also, lighting devices comprising means for transferring heat, and methods of deploying lighting devices.
Abstract:
A power supply, comprising a boost converter which provides voltage to a first load, and a flyback converter which provides voltage to a second load and which utilizes an inductive element of the boost converter as a primary winding of a transformer of the flyback converter. Also, a power supply comprising a MOSFET which is disposed between solid state elements and a second reference potential and which controls current flowing through the solid state elements. Also, a circuit comprising a transformer, a first circuit portion comprising the primary winding of the transformer and a second circuit portion comprising the secondary winding of the transformer. Also, a power supply comprising means for using a common transformer for providing a boost converter and a flyback converter. Also, a power supply comprising a transformer, means for providing a boost converter utilizing the transformer, and means for providing a flyback converter utilizing the transformer.
Abstract:
A lighting device, comprising at least one solid state light emitter, at least one first lumiphor and at least one second lumiphor which is spaced from the first lumiphor. The solid state light emitter can be a light emitting diode. A method of making a lighting device, comprising positioning at least one second lumiphor spaced from and outside of at least one first lumiphor relative to at least one solid state light emitter. A method of lighting, comprising providing electricity to at least one solid state light emitter in such a lighting device.
Abstract:
A lighting device comprising first and second groups of solid state light emitters, which emit light having peak wavelength in ranges of from 430 nm to 480 nm, and first and second groups of lumiphors which emit light having dominant wavelength in the range of from 555 nm to 585 nm. In some embodiments, if current is supplied to a power line, a combination of (1) light exiting the lighting device which was emitted by the first group of emitters, and (2) light exiting the lighting device which was emitted by the first group of lumiphors would have a correlated color temperature which differs by at least 50 K from a correlated color temperature which would be emitted by a combination of (3) light exiting the lighting device which was emitted by the second group of emitters, and (4) light exiting the lighting device which was emitted by the second group of lumiphors.
Abstract:
Lighting devices comprising first and second solid state light emitters and an optical device (e.g., optical fiber). If the emitters are illuminated, (1) light from at least one of the emitters travels through at least a portion of the optical device, and light from the first emitter is mixed with light from the second emitter, and/or (2) light from at least one of the emitters travels through at least a portion of the optical device, and white light is emitted from the lighting device. Also, a lighting device comprising at least one LED, at least one lumiphor, and an optical device, in which if each of the LED(s) is illuminated and each of the lumiphor(s) is excited, at least some of the light emitted from the LED(s) or emitted from the lumiphor(s) travels through at least a first portion of the optical device.
Abstract:
A lighting device, comprising a housing and at least one mounting clip. The housing comprises an electrical connection region engageable in an electrical receptacle. The mounting clip is pivotable from a first position, where an end region of the mounting clip does not extend beyond a periphery of the housing, to a second position, where the end region extends beyond the housing periphery. Also, a lighting device, comprising a housing, a trim element and at least one mounting clip. The mounting clip is pivotable, such that if the mounting clip is in a second position and then the trim element is rotated, the mounting clip will pivot to a third position, where the mounting clip engages the housing such that the trim element is biased toward a ceiling or other structure in which the lighting device is mounted. Also, methods of installing housings and/or trim elements.
Abstract:
A lighting device comprising at least one solid state light emitter and at least one lumiphor. If each solid state light emitter is illuminated and each lumiphor is excited, a mixture of light emitted has x, y color coordinates within an area defined by the coordinates 0.32, 0.40; 0.36, 0.48; 0.43, 0.45; 0.42, 0.42; and 0.36, 0.38. The lumiphor(s) comprises phosphor particles, in the range of from 3 to 7 micrometers (or 5-15, 10-20, or 15-25 micrometers), or having a mean particle size of 5, 10, 15, 20 micrometers. Also, a lighting device comprising at least one emitter and at least one lumiphor in which the lumiphor comprises phosphor particles having sizes as mentioned above, where the lighting device has an efficacy of at least 60 (or 70, or 80) lumens per watt.