A lighting fixture is provided. The lighting fixture includes a housing, a light source assembly, a lens cover, and an anti-deformation assembly, the housing and the lens cover are connected and form a mounting space; the light source assembly is mounted in the mounting space and includes a light source panel, and a connection through-hole is provided in the light source panel; the lens cover includes a cover body and a lens unit on the cover body; and a part of the anti-deformation assembly is in the connection through-hole, and the anti-deformation assembly is connected to the lens unit to apply an action force to the lens unit to cause the lens unit to fit the light source panel.

A lighting fixture is provided. The lighting fixture includes a housing, a light source assembly, a lens cover, and an anti-deformation assembly, the housing and the lens cover are connected and form a mounting space; the light source assembly is mounted in the mounting space and includes a light source panel, and a connection through-hole is provided in the light source panel; the lens cover includes a cover body and a lens unit on the cover body; and a part of the anti-deformation assembly is in the connection through-hole, and the anti-deformation assembly is connected to the lens unit to apply an action force to the lens unit to cause the lens unit to fit the light source panel.

A method of removing moisture from a closed environment of inside a LED based lighting fixture, comprises the step of utilizing an electrolysis based dehumidifying device (7, 9) to lower humidity level of inside said closed environment, a current being applied to the electrolysis based dehumidifying device (7, 9) whereby the electrolysis based dehumidifying device (7, 9) draws moisture out of said closed environment, through electrolysis.

A method of removing moisture from a closed environment of inside a LED based lighting fixture, comprises the step of utilizing an electrolysis based dehumidifying device (7, 9) to lower humidity level of inside said closed environment, a current being applied to the electrolysis based dehumidifying device (7, 9) whereby the electrolysis based dehumidifying device (7, 9) draws moisture out of said closed environment, through electrolysis.

Pressure relief valves for use in high pressure applications that may include a conical shaped plunger, a body with a conical shaped mating surface corresponding to the shape of the conical shaped plunger, and one or more sealing elements, such as a pair of O-rings, are disclosed.

Pressure relief valves for use in high pressure applications that may include a conical shaped plunger, a body with a conical shaped mating surface corresponding to the shape of the conical shaped plunger, and one or more sealing elements, such as a pair of O-rings, are disclosed.

Explosion-proof enclosures having one or more flame paths and one or more grooves for protecting the flame paths and/or assisting in accessing and measuring the flame paths, and methods for coating the explosion-proof enclosures.

Explosion-proof enclosures having one or more flame paths and one or more grooves for protecting the flame paths and/or assisting in accessing and measuring the flame paths, and methods for coating the explosion-proof enclosures.

Apparatus and methods for lighting. The apparatus may include an LED light source. The light source may be disposed in housing. The apparatus may include a circuit. The circuit may be configured to cause the LED light source to emit light at: a first intensity; and a second intensity that is different from the first intensity. The apparatus may include a mechanical power state selector. A user may use the power state selector to select between LED light sources that are arranged to illuminate in different directions. The apparatus may include a CCT state selector. A user may use the CCT state selector to select a CCT for one or more LED light sources. The CCT may be produced by combining light from one or more LEDs of different CCTs.

Apparatus and methods for lighting. The apparatus may include an LED light source. The light source may be disposed in housing. The apparatus may include a circuit. The circuit may be configured to cause the LED light source to emit light at: a first intensity; and a second intensity that is different from the first intensity. The apparatus may include a mechanical power state selector. A user may use the power state selector to select between LED light sources that are arranged to illuminate in different directions. The apparatus may include a CCT state selector. A user may use the CCT state selector to select a CCT for one or more LED light sources. The CCT may be produced by combining light from one or more LEDs of different CCTs.