A light fixture can include a housing and a sensor coupled to the housing. The sensor of the light fixture can include a first port disposed in the occupiable volume of space, where the first port is configured to measure a first parameter in the occupiable volume of space. The sensor of the light fixture can also include a second port disposed in a plenum volume of space, where the second port is configured to measure the first parameter in the plenum volume of space. The sensor of the light fixture can further include a first transducer coupled to the first port and the second port, where the first transducer is configured to determine a first parameter differential between the first parameter measured by the first port and the first parameter measured by the second port.

In a clean air device or a pass box that includes an ultraviolet light emitting device using a semiconductor chip, separately from a semiconductor chip that emits an ultraviolet ray, a semiconductor chip or an indicating lamp that emits visible light is disposed to visualize a strength of an ultraviolet intensity.

The invention provides a system (1) comprising a fan assembly (100) with a plurality of nozzle openings (115a, 115b, . . . ) for creating air flows (111a, 111b, . . . ), the fan assembly (100) configured to provide said air flows (111a, 111b, . . . ) in at least two non-parallel directions (112a, 112b, . . . ), wherein the at least two non-parallel directions (112a, 112b, . . . ) are configured within a virtual cone (30) having an apex angle (a) selected from the range of 10-170° and having a cone axis (31), a control system (200) configured to control said air flows (11a, 111b, . . . ), the system (1) further comprising a light source (10) configured to generate light source light (11).

A controlled agricultural environment includes a vertically-stacked multiple-level growing area and a fluid-cooled LED-based lighting system including multiple fluid-cooled LED-based lighting fixtures disposed in the vertically-stacked multiple-level growing area. The environment also includes a hydronics system having a coolant circuit fluidically coupled to the fluid-cooled LED-based lighting system and multiple secondary heating loops to separately heat each level of the vertically-stacked multiple-level growing area. Each lighting fixture comprises a frame having one or more channels, one or more LED modules thermally coupled to the frame, control circuitry coupled to the frame and electrically coupled to the LED module(s) to receive AC power and to supply regulated electrical power to the LED module(s), and one or more pipes thermally coupled to the channel(s) and fluidically coupled to the coolant circuit to carry a fluid coolant that extracts heat generated by the LED module(s).

A ventilation and lighting system having a fan, a grille having one or more lighting elements and a controller that coordinates operation of the fan and the one or more lighting elements from a remote location. The controller defines scene control configured to define one or more scenes, each of which defines a predefined light control and fan control. The light control can have predefined settings of color, duration, intensity, saturation, and/or correlated color temperature. The fan control can have predefined settings of duration and/or power.

An LED-based light can be installed in a conventional light fixture. The LED-based light can include a sensor operable to output a signal indicative of whether an area of one or more of the rooms is in an occupied state or a non-occupied state, and the LED-based light can also include an LED controller operable to control at least one LED in the light in response to the signal. Additionally, the LED-based light can include a transmitter operable to output the signal indicative of whether the area is in the occupied state or the non-occupied state to a building environment regulator.

A controlled agricultural environment includes a vertically-stacked multiple-level growing area and a fluid-cooled LED-based lighting system including multiple fluid-cooled LED-based lighting fixtures disposed in the vertically-stacked multiple-level growing area. The environment also includes a hydronics system having a coolant circuit fluidically coupled to the fluid-cooled LED-based lighting system and multiple secondary heating loops to separately heat each level of the vertically-stacked multiple-level growing area. Each lighting fixture comprises a frame having one or more channels, one or more LED modules thermally coupled to the frame, control circuitry coupled to the frame and electrically coupled to the LED module(s) to receive AC power and to supply regulated electrical power to the LED module(s), and one or more pipes thermally coupled to the channel(s) and fluidically coupled to the coolant circuit to carry a fluid coolant that extracts heat generated by the LED module(s).

A lamp includes an air supply and a lighting module. The air supply includes an air blower and an annular housing, the annular housing defines an annular region and has an inner ring surface, an outer ring surface, a first end surface and a second end surface which are connected with the inner ring surface and the outer ring surface and face away from each other. The lighting module is disposed at a side of the annular housing which is close to the first end surface and is located within a projection range of the annular region at the side, and the lighting module emits light rays towards the side faced by the first end surface.

System and method to reduce risk of exposure to pathogens using a system comprising transportable clinical chambers, often configured with the exterior dimensions of a shipping container. The transportable chamber can be partially or completely self-contained, and configured for rapid transport and setup. The chamber is typically equipped with suitable automatic airborne sterilizing agent generators, sensors, mechanisms, and automatic air control devices. After suitable safety checks, the system isolates the interior air from external air, and activates an air phase anti-microbial agent generator, filling at least a portion of the chamber with an air-phase anti-pathogen agent. After sterilization, the invention deactivates the generator and then restores the connection to outside sterilized air. In some embodiments, the transportable chamber also comprises an intelligent platform comprising video cameras, and computer vision systems configured to identify humans and medical supplies, read optical tags, and correlate recognized objects with RFID tag data.

An air conditioner that further provides a lighting function is provided. The air conditioner can increase space utilization of a ceiling by the lighting device being integrally installed in the indoor unit. In addition, heat generated at the lighting device can be radiated by the cooling structure provided in the indoor unit, and thereby overheating of the lighting device can be prevented. The air conditioner includes a blowing fan configured to flow air, a housing in which an intake port is formed to suction air by the blowing fan, a lighting device provided in the housing, and a cooling channel configured to guide the air suctioned by the blowing fan to pass the lighting device.