Self balancing air fixture

An air flow and illumination apparatus comprising:

• A. a housing including a base portion and sidewalls extending from the base portion at least in part in the direction of a first principal axis, and defining an open-faced interior region with an open face extending transverse to and about the first principal axis and opposite to and spaced apart from the base portion, wherein the housing includes at least one output port passing therethrough, and establishing an outbound air flow path from points in the interior region, and through the at least one output port and to points exterior to the housing,
• B. at least one return plenum disposed in the interior region and extending at least in part in the direction of a second principal axis transverse to the first principal axis, wherein the at least one return plenum is pneumatically coupled to the outbound air flow path and to the open face of the housing,
• C. a light source assembly disposed within the interior region and affixed to the housing, including a substrate element affixed to the housing, and an optical reflector element, and further including an array of one or more light sources affixed to the substrate element opposite the optical reflector and extending at least in part in the direction of the second principal axis, and wherein the light sources face the optical reflector element whereby light emitted by the light sources is reflected by the optical reflector element and directed to exit the interior region through the open face in a direction away from the base portion,
• D. an electrical coupling assembly affixed to the housing and adapted to couple electrical energy to the light sources in a form adapted to cause the light sources to emit light,
• E. an outlet air guide assembly disposed in the housing adapted to receive air from points exterior to the housing through the open face, and into the return plenum and past and adjacent to the heat exchanger assembly, and through the at least one output port to points exterior to the housing, and
• whereby an outbound return flow path is established from the open face of the interior region, through the return plenum past and adjacent to the L-light sources and the substrate element, and through the at least one output port in a direction away from the housing.

Air flow apparatus comprising:

• A. a housing including a base portion and sidewalls extending from the base portion at least in part in the direction of a first principal axis, and defining an open-faced interior region with an open face extending transverse to and about the first principal axis and opposite to and spaced apart from the base portion,
• B. in the housing, at least one input port passing therethrough, and establishing an inbound air flow path from points external to the housing and through the at least one input port to points in the interior region,
• C. at least one supply plenum disposed in the interior region and extending at least in part in the direction of a second principal axis transverse to the first principal axis,
• wherein the at least one supply plenum is pneumatically coupled to the inbound air flow path and to the open face of the base portion,
• D. an inlet air guide assembly disposed in the housing and adapted to receive air along the inbound air flow path from at least one input port, and pass the received air though the supply plenum and through the open face of the base portion in a direction away from the base portion to points exterior to the housing,
• E. a damper assembly disposed along the inbound air flow path between the supply plenum and the open face of the base portion, including a damper and an associated actuator coupled to the damper, wherein the damper is operably coupled to the actuator whereby, in response to the actuator, the damper is selectively movable between a first position fully blocking air flow along the inbound air flow path, and a second position displaced therefrom and allowing air flow along the inbound air flow path from points exterior to the housing and through the at least one supply plenum and inlet air guide assembly and the open face of the base portion,
• whereby an inbound supply flow path is established from and through the at least one input port, the at least one supply plenum, the damper, and by way of the inlet air guide assembly, through the open face of the interior region in a direction away from the base portion, and
• further comprising a controller in operative communication an upstream variable air source to adjust:
• airflow along an upstream flow path, wherein the upstream flow path is contiguous with the inbound supply flow path, and
• wherein the controller is adapted to control fluid flow along the inbound supply flow path to be at a fixed flow velocity and to adjustably control the fluid volumetric flow rate whereby a predetermined set point is attained.