Abstract: A controller for controlling a plurality of lighting devices configured for wireless communications in a facility includes a data communications interface communicating with at least one of the devices. The controller further includes a control module configured to provide a control signal to the data communications interface for communicating to a transceiver associated with the device and for turning off the device according to an algorithm wherein the control signal is provided based on a time of day and/or a sensed condition relating to use of the facility. The transceiver reports device data to the control module to quantify a reduction in power obtained by controlling the devices according to the algorithm.

Abstract: A troffer door assembly has a frame assembly, a lens member and a light emitting diode (LED) assembly. The rigid brace member is affixed to the frame assembly such that the rigidity of the frame assembly is increased. Hinge members and latch members are positioned in exterior slots on the frame assembly such that the location of the hinge members and latch members can be adjusted. In this manner installed troffer light fixtures can be retrofitted by replacing the installed troffer door with the troffer door assembly as described.

Abstract: A retrofitting kit for retrofitting an existing troffer light fixture having a troffer housing includes a door assembly and a retainer. The door assembly includes a housing and a light source within the housing. The retainer is fixed to the housing of the door assembly and configured to engage at least one of the troffer housing and a T-bar of a ceiling system to thereby selectively secure the door assembly within the ceiling system. The retainer is positioned such that the engagement between the retainer and the at least one of the troffer housing and the T-bar of the ceiling system is direct.

Abstract: A retrofit light fixture for retrofitting an existing strip-style light fixture includes a housing, a light emitting diode, a driver, and a bracket. The housing includes a top portion, a side portion, and an end cap, and the housing defines an interior space. At least one of the top portion and the side portion define an elongated opening. The bracket includes a locking flange configured to selectively engage with a portion of a housing of the existing strip-style light fixture. The bracket is slidably coupled to the housing with a fastener that extends through the elongated opening. The bracket is selectively repositionable between a disengaged orientation and an engaged orientation, and the bracket is configured to interface with a portion of the existing strip-style light fixture and thereby secure the retrofit light fixture in place when selectively repositioned into the disengaged orientation.

Abstract: A method of reducing electricity usage during peak demand periods includes the steps of establishing predetermined load reduction criteria representative of a desire by a power provider to reduce loading on an electricity supply grid, and coordinating with a facility having lighting equipment to permit the power provider to turn-off one or more of the lighting equipment by sending instructions to a master controller at the facility in response to the predetermined load reduction criteria, and establishing a list of lighting equipment to be turned-off in response to the instructions, and configuring the master controller to send an override control signal to the lighting equipment to implement the instructions, and configuring the lighting equipment to send a response signal to the master controller providing a status of the lighting equipment.

Abstract: A light fixture is configured for use in either retrofitting an existing troffer light fixture or for use in new construction. The light fixture includes a self-supporting adaptor bracket configured to rest on a T-bar of a ceiling system and further configured to optionally receive a housing of the existing troffer light fixture. The light fixture further includes a door assembly including a latch configured to engage a latch surface of the adaptor bracket, a hinge configured to interface with a slot of the adaptor bracket, a housing including the latch and the hinge, and a light source within the housing.

Abstract: A controller for controlling a plurality of lighting devices configured for wireless communications in a facility includes a data communications interface communicating with at least one of the devices. The controller further includes a control module configured to provide a control signal to the data communications interface for communicating to a transceiver associated with the device and for turning off the device according to an algorithm wherein the control signal is provided based on a time of day and/or a sensed condition relating to use of the facility. The transceiver reports device data to the control module to quantify a reduction in power obtained by controlling the devices according to the algorithm.

Abstract: A retrofit light fixture for retrofitting an existing strip-style light fixture includes a housing, a light emitting diode, a driver, and a bracket. The housing includes a top portion, a side portion, and an end cap, and the housing defines an interior space. At least one of the top portion and the side portion define an elongated opening. The bracket includes a locking flange configured to selectively engage with a portion of a housing of the existing strip-style light fixture. The bracket is slidably coupled to the housing with a fastener that extends through the elongated opening. The bracket is selectively repositionable between a disengaged orientation and an engaged orientation, and the bracket is configured to interface with a portion of the existing strip-style light fixture and thereby secure the retrofit light fixture in place when selectively repositioned into the disengaged orientation.

Abstract: A light fixture is configured for use in either retrofitting an existing troffer light fixture or for use in new construction. The light fixture includes a self-supporting adaptor bracket configured to rest on a T-bar of a ceiling system and further configured to optionally receive a housing of the existing troffer light fixture. The light fixture further includes a door assembly including a latch configured to engage a latch surface of the adaptor bracket, a hinge configured to interface with a slot of the adaptor bracket, a housing including the latch and the hinge, and a light source within the housing.

Abstract: A light fixture includes a housing with a channel configured to contain a driver for driving one or more light emitting diodes located outside the channel. The housing includes slots configured to receive and secure a lens. The light fixture further includes a removable channel cover, tabs located along the length of the channel and adjacent to the channel on the housing, and a lens bar having a first flange configured to secure the lens and a second flange configured to be inserted underneath the tabs. The lens bar is secured in place with the second flange underneath the tabs by the channel cover which prevents the lens bar from moving laterally with respect to the tabs. The slots, the first flange, and a flange running the length of the light fixture perpendicular to the slots are configured to cover the edges of the lens when installed.

Abstract: A retrofitting kit includes at least one of an adapter bracket and a retainer configured to engage at least one of an existing troffer light fixture and a T-bar of a ceiling system and a door assembly configured to be held in the ceiling system by the at least one of the adapter bracket and the retainer. The door assembly includes a lens, a housing configured to hold the lens, the housing including one or more sidewalls disposed around a periphery of the lens, where the one or more sidewalls extend upward, away from the lens to define a cavity, and a plurality of LEDs having primary light axes extending inward into the cavity. The plurality of LEDs are coupled to the one or more sidewalls and positioned to illuminate the lens from behind with a uniform distribution of light when engaged.

Abstract: A retrofitting kit for retrofitting an existing troffer light fixture having a troffer housing includes a door assembly and a retainer. The door assembly includes a housing and a light source within the housing. The retainer is fixed to the housing of the door assembly and configured to engage at least one of the troffer housing and a T-bar of a ceiling system to thereby selectively secure the door assembly within the ceiling system. The retainer is positioned such that the engagement between the retainer and the at least one of the troffer housing and the T-bar of the ceiling system is direct.

Abstract: A retrofitting kit for retrofitting an existing troffer light fixture having a troffer housing includes an adaptor bracket and a door assembly. The adaptor bracket includes a channel configured to rest on a T-bar of a ceiling system, and further configured to be located between the T-bar and the troffer housing. The channel defines an aperture configured to accept either a hinge or a latch of the door assembly, and the channel defines a latch surface. The door assembly includes a hinge configured to interface with the adaptor bracket, a latch configured to engage the latch surface of the adaptor bracket to hold the door assembly in a closed position, a housing including the latch and the hinge, and a light source coupled to the housing.

Abstract: A retrofitting kit includes at least one of an adapter bracket and a retainer configured to engage at least one of an existing troffer light fixture and a T-bar of a ceiling system and a door assembly configured to be held in the ceiling system by the at least one of the adapter bracket and the retainer. The door assembly includes a lens, a housing configured to hold the lens, the housing including one or more sidewalls disposed around a periphery of the lens, where the one or more sidewalls extend upward, away from the lens to define a cavity, and a plurality of LEDs having primary light axes extending inward into the cavity. The plurality of LEDs are coupled to the one or more sidewalls and positioned to illuminate the lens from behind with a uniform distribution of light when engaged.

Abstract: A method of reducing electricity usage during peak demand periods includes the steps of establishing predetermined load reduction criteria representative of a desire by a power provider to reduce loading on an electricity supply grid, and coordinating with a facility having lighting equipment to permit the power provider to turn-off one or more of the lighting equipment by sending instructions to a master controller at the facility in response to the predetermined load reduction criteria, and establishing a list of lighting equipment to be turned-off in response to the instructions, and configuring the master controller to send an override control signal to the lighting equipment to implement the instructions, and configuring the lighting equipment to send a response signal to the master controller providing a status of the lighting equipment.

Abstract: A retrofitting kit for retrofitting an existing troffer light fixture having a troffer housing. The kit includes an adaptor bracket and a door assembly. The adaptor bracket includes a channel configured to rest on a T-bar of a ceiling system between the T-bar and the troffer housing, a slot configured to receive a portion of a troffer door assembly, and a latch surface configured to engage with a latch. The door assembly includes a latch configured to engage the latch surface of the adaptor bracket, a hinge configured to interface with the slot of the adaptor bracket, a housing including the latch and the hinge, and a light source within the housing.

Abstract: A lighting device includes a substantially cylindrical tube defining an interior and an exterior, and a longitudinal axis extending between a first end and a second end. The first end of the tube defines a substantially cylindrical opening disposed in a plane at a first angle that is substantially perpendicular to the longitudinal axis, and the second end of the tube defines a substantially elliptical opening disposed in a plane at a second angle that is substantially non-perpendicular to the longitudinal axis. A reflective surface is provided on the interior of the tube, and a substantially cylindrical flashing is provided about the exterior of the tube. A substantially transparent dome is coupled to the tube proximate the first end, and a diffuser is coupled to the tube proximate the second end.

Abstract: A system for mounting an outdoor fluorescent lamp lighting fixture to a pole includes a compression sleeve configured to receive and tighten around the pole, a pivot base fixed to the compression sleeve, a mount configured for securing to the fluorescent lamp lighting fixture and for pivotally coupling to the pivot base, where the mount includes multiple adjustment points configured to allow the mount to be fixed at varying angles relative to the pivot base.

Abstract: One embodiment of the invention relates to a system for operating a plurality of streetlights in response to motion from a vehicle. The system includes a sensor associated with at least one of the streetlights and configured to detect the presence of a moving vehicle and to provide a signal representative of the moving vehicle. The system further includes a radio frequency transceiver associated with each of the streetlights. The system yet further includes processing electronics configured to receive the signal representative of the moving vehicle from the sensor and to cause the radio frequency transceiver to transmit a command to one or more of the plurality of the streetlights to change lighting states along a pathway for the vehicle.