A lighting device includes a housing that supports a flexible light assembly and can be operated in multiple configurations. The housing includes a cup-shaped opaque stator and light transmissive rotor that rotates relative to the stator. The rotor includes a spool upon which the flexible light assembly can be wound. The light source is configurable between a retracted configuration in which the flexible light assembly resides in the housing and light emitted by the flexible light assembly is transmitted through the rotor, and an extended configuration in which a portion of the flexible light assembly resides outside the housing. In the extended configuration, a portion of light emitted from the flexible light assembly is transmitted through the rotor and another portion of light emitted from the flexible light assembly originates outside the housing.

A method of lamp assembly that etching a glass tube body to increase a texture of the surface of the sidewall of the glass tube body, the sidewall of the glass tube body enclosing a hollow interior; and positioning a circuit board including a plurality of light emitting diodes (LEDs) within the hollow interior of the glass tube, wherein the increase in the texture of the surface increases the light diffusivity of the glass tube body.

The invention provides a light generating device (1000) comprising (i) a tubular enclosure (100) and (ii) a plurality of light sources (200) configured to generate light source light (201) configured within the tubular enclosure (100), wherein the light sources (200) comprise solid state light sources, wherein the enclosure (100) comprises an enclosure material (300) that is transmissive for at least part of the light source light (201), wherein the enclosure material (300) comprises polymeric foam material (310), wherein the polymeric foam material (310) has a volume fraction of gas voids (320) relative to the total volume of the polymeric foam material (310) including the gas voids (320) selected from the range of 10-95 vol. %, wherein the tubular enclosure (100) has a tube length (L1) of at least 400 mm and a wall thickness (w1) selected from the range of 0.5-6 mm.

A light emitting device configured to emit light with a total color temperature (CT.sub.tot), said light emitting device comprising at least one first light emitting diode (LED) filament, and at least one second LED filament, wherein each of the at least one first LED filament and the at least one second LED filament comprises an elongated carrier, and an array of light emitting diodes mounted on said substrate; and a controller for individually controlling said at least first LED filament and said at least one second LED filament, wherein said at least one first LED filament is arranged to emit light of a first color temperature (CT.sub.1), said first color temperature being controllable in a first color temperature range, from CT.sub.1.sup.low to CT.sub.1.sup.high, wherein said at least one second LED filament is arranged to emit light of a second color temperature (CT.sub.2), said second color temperature being controllable in a second color temperature range, from CT.sub.2.sup.low to CT.sub.2.sup.high, and wherein said controller is configured to control said total color temperature (CTtot) from a first total color temperature (CT.sub.tot,1) to a second total color temperature (CT.sub.tot,2) by controlling the first color temperature, and the second color temperature according to a preselected control scheme, such that the difference between the first color temperature and the second color temperature (ΔCT) is not constant during the change of CT.sub.tot.

A tube lamp including a light source including at least one string of light emitting diodes within a tube body; end caps having pin contacts on each end of the tube body; and driver electronics including a filament detector portion provided by a passive resistance capacitor (RC) circuit that simulates the filament load of a fluorescent lamp when installed into a ballast containing fixture. The tube lamp may also include a switch for selecting light characteristics for light emitted by the light source.

A lighting device according to an embodiment of the present disclosure includes a lighting part which includes a substrate provided along a longitudinal direction of the lighting device and a lighting unit provided on the substrate, and a diffusing part which is provided along the longitudinal direction of the lighting device, accommodates the lighting part therein, and diffuses light generated in the lighting part.

A lens component radiates light from a light source. The lens component includes a light guiding radiation portion. The light guiding radiation portion includes a light incidence portion having an incidence surface on which the light from the light source is made incident, and a plurality of radiation mechanisms that respectively radiate to a plurality of radiation angle ranges. The incidence surface includes a close side incidence region and a distant side incidence region. The radiation angle ranges include a close side radiation angle range and a distant side radiation angle range. The light incident on the close side incidence region is radiated to the distant side radiation angle range via a corresponding distant side radiation mechanism. The light incident on the distant side incidence region is radiated to the close side radiation angle range via a corresponding close side radiation mechanism.

A combination axial fan and LED lighting system configured to fit into the footprint of a standard ceiling tile. The system includes a housing container and an axial fan. The fan has a fan cavity including air diversion mechanism to direct air from the fan cavity toward the lighting and fan components. The invention includes an airflow surface to direct air existing the fan cavity along an LED light fixture.

A light assembly for attachment to a surface of a vehicle. The light assembly includes a vehicle base configured to be coupled to the surface of the vehicle and a light head coupled to the vehicle base. The light head is configured to rotate relative to the vehicle base about a first axis and about a second axis that is different from the first axis. The light head is configured to rotate about the first and second axes at a first speed in response to a first user input, and to rotate about the first and second axes at a second speed that is different from the first speed in response to a second user input.