This application discusses components that can be used to prevent flame or hot gas transmission from the inside of a luminaire enclosure to the outside of a luminaire enclosure due to an internal explosion, thereby yielding an explosion encapsulating luminaire enclosure. Accordingly, the components and assemblies described herein can be safely integrated with systems that operate in the presence explosive gas.

This application discusses components that can be used to prevent flame or hot gas transmission from the inside of a luminaire enclosure to the outside of a luminaire enclosure due to an internal explosion, thereby yielding an explosion encapsulating luminaire enclosure. Accordingly, the components and assemblies described herein can be safely integrated with systems that operate in the presence explosive gas.

A projection device and a household appliance are provided. The projection device includes a casing, a lens component, and a pattern lighting module. An opening is disposed at a front end of the casing. The lens component is disposed inside an accommodating space of the casing and fixed on the casing, and the lens component corresponds to the opening. The pattern lighting module is disposed inside the accommodating space of the casing and fixed on the casing, and the pattern lighting module corresponds to the lens component. The pattern lighting module emits at least one patterned light beam that passes through the lens component and the opening sequentially.

A light emitting diode (LED) lighting device is provided having a front housing having an outer profile and a shape formed from a translucent or transparent material. The front housing has an edge protrusion extending from a front housing body along the outer profile. The edge protrusion bounds an inner light chamber. A rear housing is separately provided having a size and outer profile substantially corresponding to the shape of the front housing. The rear housing is opaque or impervious to light, and has a substantially planar rear panel and a rear panel protrusion extending from the rear panel adjacent to and spaced apart from an outer edge of the rear housing. The rear panel protrusion and the rear panel further bound the inner light chamber. At least a portion of the edge protrusion surrounds the rear panel protrusion.

A cooking appliance light including a light glass arranged at a top side of the cooking appliance light; a socket arranged at a bottom side of the cooking appliance light, wherein a geometric center axis of the cooking appliance light runs vertically through the socket; a neck arranged at a bottom side of the light glass, the neck including at least one groove arrangement including an axially extending vertical groove and an adjoining circumferentially extending horizontal groove wherein the axially extending vertical groove and the circumferentially extending horizontal groove are radially open and engageable by a locking bar, wherein the axially extending vertical groove includes an axially oriented locking bar entry opening, wherein the circumferentially extending horizontal groove includes an axially upward oriented locking bar support surface including a safety protrusion and a movement stop at an end that is distal from the axially extending vertical groove.

A cooking appliance light including a light glass arranged at a top side of the cooking appliance light; a socket arranged at a bottom side of the cooking appliance light, wherein a geometric center axis of the cooking appliance light runs vertically through the socket; a neck arranged at a bottom side of the light glass, the neck including at least one groove arrangement including an axially extending vertical groove and an adjoining circumferentially extending horizontal groove wherein the axially extending vertical groove and the circumferentially extending horizontal groove are radially open and engageable by a locking bar, wherein the axially extending vertical groove includes an axially oriented locking bar entry opening, wherein the circumferentially extending horizontal groove includes an axially upward oriented locking bar support surface including a safety protrusion and a movement stop at an end that is distal from the axially extending vertical groove.

A light fixture having an upper housing and a lower housing. A rotate-tilt mechanism is interposed between the two housings to permit the lower housing both to rotate and tilt relative to the upper housing.

A light emitting diode (LED) lighting device includes a frame having a substantially consistent cross-sectional profile and an inner surface; a front panel having a front surface sized and shaped to substantially correspond to the inner surface of the frame, a rear surface having a shape substantially corresponding to the shape of the front surface and a size smaller than the front surface, an edge profile extending from the front surface to the rear surface; and an adhesive positioned between the edge profile adjacent the rear surface of the front panel and the inner surface of the frame; a rear panel sized and shaped to correspond to the frame and spaced apart from the front panel a distance about the thickness of the frame; and at least one LED mounted on the rear panel.

An environmentally sealed light fixture for illuminating potentially hazardous environments. The sealed light fixture includes multiple light modules that are independently rotatable to customize the direction of light emitted from the fixture. The fixture is also modular and scalable, enabling additional light modules to be added to increase lumen output or area coverage. The sealed light fixture includes sealed light chambers, electronics chambers, and sealed connections between the modules for maintaining the integrity as well as concealing the wiring and electrical connections within the light fixture.

LED related lighting methods and apparatus are described. Various features relate to water tight light fixtures. Some of the fixtures are spotlights while other fixture are intended for in ground use. The light fixtures in at least some embodiments include power control features. In spotlight embodiments beam angle and power or light output can be controlled without opening the light assembly or compromising the water tight seals which also protect against dirt. In ground embodiments support tilt angle setting which allow a user to set the light fixture to one or more tilt angles. Beam angle can also be changed in some embodiments as well as power control. Beam angle, power control and tilt angle adjustments are supported in some embodiments but need not be supported in all embodiments with some embodiments using one or more of the described features but not all features.