A combination axial fan and LED lighting system configured to fit into the footprint of a standard ceiling tile. The system includes a housing container and an axial fan. The fan has a fan cavity including air diversion mechanism to direct air from the fan cavity toward the lighting and fan components. The invention includes an airflow surface to direct air existing the fan cavity along an LED light fixture.

An assimilation lamp device (101; 800) for stimulating plant and crop growth comprises: a central lamp unit (10), comprising a body (14) and one or more LEDs (12) mounted to the bottom surface of the body, wherein the body acts as a heat sink for the heat generated by the LEDs. The device further comprises air stream generating means (42) for generating a downward air stream (43; 341), and heat transfer and exchange means for transferring heat from the body to the air stream, so that heat from the LEDs is used to increase the temperature of said downward air stream and is eventually used to warm the environment of the plants. A device controller (850) has a set point input (859) and generates control signals for the LEDs and the air stream generating means in conformity with an input signal received at its set point input.

A system for upgrading and retrofitting existing streetlights. The system enables conventional streetlights using sodium vapor, and other conventional lighting technologies, to be upgraded to more energy efficient and long-lasting LED lighting. At the same time, cellular and wireless communications can be added to the streetlight to provide additional bandwidth over that provided by conventional cell towers. The system can offload bandwidth in otherwise overloaded areas, such as densely populated urban areas. The system can include mini- or micro-cellular routers, GPS, Wi-Fi, Bluetooth®, and other micro cellular and wireless technologies. The system can include a light fixture styled to look like existing conventional light fixtures and can be retrofitted to existing streetlight poles and mounts with little, or no, modification to the pole and wiring.

A combination axial fan and LED lighting system configured to fit into the footprint of a standard ceiling tile. The system includes a housing container and an axial fan. The fan has a fan cavity including air diversion mechanism to direct air from the fan cavity toward the lighting and fan components. The invention includes an airflow surface to direct air existing the fan cavity along an LED light fixture.

A lighting apparatus for use as a surgical headlamp is disclosed. A light emitting diode is positioned in a recess within a frustoconical, thermally-conductive heat sink that has a several circumferential ridges to provide a desired surface area for heat transfer. The diode and the heat sink are provided in a housing that also includes a fan for drawing ambient air into the housing to contact the heat sink and exhausting heated air. A lens is snap-fit into a slide that frictionally engages the interior of the housing, allowing a user to adjust the spacing between the light emitting diode and the lens as desired. Personal cooling apparatuses usable with the lighting apparatus are also described. Auxiliary undergown switches are also described as are personal cooling apparatuses.

An example horticulture device includes a housing. The housing includes a central cavity having an inlet and an outlet in fluid communication with the inlet through the central cavity. The horticulture device also includes at least one heat sink fixed relative to the housing. Each of the at least one heat sinks include a main body and a plurality of fins extending therefrom, a plurality of passages being provided between the fins of the at least one heat sink, between adjacent ones of the at least one heat sinks, or both. The horticulture device also includes at least one light source fixed relative to the at least one heat sink and in thermal contact with the at least one heat sink, and a fan disposed within the housing and configured to pass air through the plurality of passages and into the central cavity. A method is also disclosed.

A solid state lighting (SSL) with a solid state emitter (SSE) having thermally conductive projections extending into an air channel, and methods of making and using such SSLs. The thermally conductive projections can be fins, posts, or other structures configured to transfer heat into a fluid medium, such as air. The projections can be electrical contacts between the SSE and a power source. The air channel can be oriented generally vertically such that air in the channel warmed by the SSE flows upward through the channel.

Exemplary embodiments include an electronic display assembly for back to back electronic image assemblies. A first closed gaseous loop may encircle the first electronic image assembly while a second closed gaseous loop may encircle the second electronic image assembly. A heat exchanger is preferably positioned within the path of the first and second closed gaseous loop along with an open loop of ambient air. A circulating fan(s) may be used to force circulating gas around the closed gaseous loops. An open loop fan may be used to force ambient air through the heat exchanger and through an optional channel behind each electronic image assembly.

The invention relates to lightweight LED lighting systems for permanent and semi-permanent mounting on elevated structures, the lighting systems having integrated support and thermal transfer features. The systems are particularly suited for elevated mast systems and specifically for mast systems that are repeatedly lifted and lowered such as drilling and service rig masts. Specifically, the invention improves a) the weight/lumen ratios of LED lamp assemblies and LED lighting systems, b) the net added weight of LED lighting systems, c) the footprint of LED light systems and/or d) obviates the need for removing LED lighting systems or their sub-assemblies when transporting mast systems.

An air-cooled high intensity LED light system includes an air-cooled LED array coupled to a blower device via a conduit. Each segment of the array includes a radiator thermally coupled to the LED elements to transfer heat from the LED elements to the environment. Airflow through the radiators is accomplished by creating a vacuum within the array by drawing air out of the manifold through the conduit. A blower provides the desired vacuum pressure to draw air from the environment through the radiator fins and out of the manifold. The conduit branches into individual segments so that an inlet corresponds to each of the segments of the array.