An LED light fixture for a hazardous location includes an axially elongated enclosure fabricated from a polymer material, at least one axially elongated linear light emitting diode (LED) module mounted in the enclosure, and an LED driver module mounted in the housing that operates the at least one linear light emitting diode. A combination of a cover lens material of the cover lens and the polymer material of the axially elongated enclosure assists with heat dissipation from the light fixture, thereby allowing the LED driver module and the at least one axially elongated linear printed circuit board with LED components to operate within a target peak temperature limit for the hazardous location.

An LED light fixture for a hazardous location includes an axially elongated enclosure fabricated from a polymer material, at least one axially elongated linear light emitting diode (LED) module mounted in the enclosure, and an LED driver module mounted in the housing that operates the at least one linear light emitting diode. A combination of a cover lens material of the cover lens and the polymer material of the axially elongated enclosure assists with heat dissipation from the light fixture, thereby allowing the LED driver module and the at least one axially elongated linear printed circuit board with LED components to operate within a target peak temperature limit for the hazardous location.

A light-emitting diode (LED) module of an LED luminaire assembly for a harsh and hazardous environment is provided. The LED module includes an LED assembly, a single-piece lens assembly, and an adhesive sealant. The LED assembly includes a plurality of LEDs. The single-piece lens assembly includes a plurality of lenses, wherein the lens assembly includes a groove defining a complete loop and surrounding the plurality of lenses, the lens assembly coupled to the LED assembly, and the plurality of lenses covering at least one of the plurality of LEDs. The adhesive sealant is disposed in the groove and bonded to the lens assembly, the adhesive sealant sealing off the plurality of LEDs from an ambient environment around the LED module.

A light-emitting diode (LED) module of an LED luminaire assembly for a harsh and hazardous environment is provided. The LED module includes an LED assembly, a single-piece lens assembly, and an adhesive sealant. The LED assembly includes a plurality of LEDs. The single-piece lens assembly includes a plurality of lenses, wherein the lens assembly includes a groove defining a complete loop and surrounding the plurality of lenses, the lens assembly coupled to the LED assembly, and the plurality of lenses covering at least one of the plurality of LEDs. The adhesive sealant is disposed in the groove and bonded to the lens assembly, the adhesive sealant sealing off the plurality of LEDs from an ambient environment around the LED module.

A linear light-emitting diode (LED) lamp comprising an emergency circuit is used to replace a luminaire operated in a normal circuit with alternate-current (AC) mains. The normal circuit comprises a step-down regulator circuit and a load control relay whereas the emergency circuit comprises a rechargeable battery, a step-up regulator circuit, and a self-diagnostic circuit. The linear LED lamp can be auto-switched from a normal mode to an emergency mode according to availability of the AC mains and whether a rechargeable battery test is initiated. The load control relay is configured to convey a forward electric current and a reverse electric current to and from the LED arrays. The self-diagnostic circuit is configured to provide a test sequence and to auto-evaluate battery performance. The step-up regulator circuit adopts an unconventional low power scheme to prolong an emergency lighting time using a limited power of the rechargeable battery.

A linear light-emitting diode (LED) lamp comprising an emergency circuit is used to replace a luminaire operated in a normal circuit with alternate-current (AC) mains. The normal circuit comprises a step-down regulator circuit and a load control relay whereas the emergency circuit comprises a rechargeable battery, a step-up regulator circuit, and a self-diagnostic circuit. The linear LED lamp can be auto-switched from a normal mode to an emergency mode according to availability of the AC mains and whether a rechargeable battery test is initiated. The load control relay is configured to convey a forward electric current and a reverse electric current to and from the LED arrays. The self-diagnostic circuit is configured to provide a test sequence and to auto-evaluate battery performance. The step-up regulator circuit adopts an unconventional low power scheme to prolong an emergency lighting time using a limited power of the rechargeable battery.

A modular LED light for explosive areas includes a housing module including a central power supply module, at least one LED module receiving element, and an LED power supply interface arranged in the LED module receiving element such that the LED power supply interface is in the housing module. At least one LED module is configured to be detachably attached to the housing module. The LED power supply interface supplies electrical power to the at least one LED module when the at least one LED module is attached to the housing module in a usage positon.

A modular LED light for explosive areas includes a housing module including a central power supply module, at least one LED module receiving element, and an LED power supply interface arranged in the LED module receiving element such that the LED power supply interface is in the housing module. At least one LED module is configured to be detachably attached to the housing module. The LED power supply interface supplies electrical power to the at least one LED module when the at least one LED module is attached to the housing module in a usage positon.

An intumescent firestop element is supported within a light can by fire sensitive supports each having a base fabricated of a meltable or flammable material and a supporting element fabricated of metal and supported by the base, with the base joined to the light can. In response to a fire, the fire sensitive supports cease to support the firestop element which drops to a deployed position in the light can until arrested by a limiter.

An intumescent firestop element is supported within a light can by fire sensitive supports each having a base fabricated of a meltable or flammable material and a supporting element fabricated of metal and supported by the base, with the base joined to the light can. In response to a fire, the fire sensitive supports cease to support the firestop element which drops to a deployed position in the light can until arrested by a limiter.