The present invention discloses an internal-circulating heat dissipation system for a stage light, the system comprising a support arm, a light holder and a circulating heat dissipation system, wherein the light holder is pivotally connected to the support arm through a pivot shaft, the pivot shaft is of a shaft pipe structure, an internal space of the light holder is in communication with an internal space of the support arm through the pivot shaft, the circulating heat dissipation system comprises a cooling medium, a heat dissipation component located inside the support arm, and a power component that promotes the cooling medium to flow in circulation between the light holder and the heat dissipation component through the shaft pipe structure, and the cooling medium is isolated from an external space of the stage light.

An artificially-lighted waterfall fixture apparatus includes a fixture housing having a lower housing part and an upper housing part overlying and fitted with the lower housing part so as to define a water-distributing channel and a passageway extending forwardly from and in communication with the water-distributing channel to receive a flow of water therefrom and produce an artificial waterfall flowing from an outlet of the passageway. The apparatus also includes an elongated baffle disposed in the fixture housing along a top portion of the water-distributing channel to receive and convert the flow of water to a laminar flow through the passageway, and an artificial light-focusing module supported centrally in the fixture housing proximate the water-distributing channel and aligned with the passageway so as to generate a beam of light through the passageway that produces a predetermined configuration of light in the laminar flow of water.

A heat exchange arrangement for a light emitting diode (LED) lamp module includes a base portion and a printed circuit board (PCB) portion. The base portion has first and second surfaces, the first surface comprising a plurality of channels. The PCB portion has first and second surfaces, the first surface configured to receive a plurality of LEDs thereon. The second surface of the PCB portion is coupled to the first surface of the base portion. The first surface of the base portion includes a plurality of open channels disposed therein, and the second surface of the PCB portion encloses said plurality of channels when the PCB portion is coupled to the base portion. The plurality of channels form cooling channels forming watertight passages for coolant fluid to flow through.

A system, apparatus, and method for thermal regulation in a tiered rack growth system. A contact heat exchange converter is provided to remove thermal energy of a light fixture for the tiered rack growth system, comprising: A contact thermal exchange cavity defined in the contact heat exchange converter is dimensioned to cooperatively receive an arcuate thermal sink of the light fixture. A circulation conduit communicates a dense medium coolant to remove thermal energy carried by a thermal mass of the contact heat exchange converter.

A cooling system for a light emitting diode assembly includes a heat exchanger configured to exchange heat from a fluid to ambient air, an enclosure configured to house the LED assembly, and a pump configured to circulate the fluid through the enclosure, through the LED assembly, or both, and through the heat exchanger. The fluid is configured to absorb heat at the LED assembly and generated by the LED assembly, and the heat exchanger is configured to cool the fluid and remove the heat absorbed by the fluid at the LED assembly.

A cooling system for a light emitting diode assembly includes a heat exchanger configured to exchange heat from a fluid to ambient air, an enclosure configured to house the LED assembly, and a pump configured to circulate the fluid through the enclosure, through the LED assembly, or both, and through the heat exchanger. The fluid is configured to absorb heat at the LED assembly and generated by the LED assembly, and the heat exchanger is configured to cool the fluid and remove the heat absorbed by the fluid at the LED assembly.

A COB LED lighting lamp cooled by a liquid agent, in particular water, used for year-round illumination of the LED light of this lamp in a greenhouse of plants and includes a load-bearing and lighting component, having a cooling plate with three threaded mounting openings arranged transversely, the inner surface of which with channels for the cooling liquid flowing through it is permanently and tightly connected with a cover equipped with neodymium magnets magnetically connected to contacting neodymium magnets of holders fixing COB LED modules equipped with COB LED diodes and lenses, and a cooling subassembly situated above it, including a cooling fan and a water radiator placed thereon and detachably connected thereto. Both components being connected to each other by two connecting pipe sets, such that the upper connector of the pipe set is screwed into the threaded opening of the water chamber of this water radiator.

An outdoor area LED lighting system including: a housing containing a large array of LEDs mounted to an aluminum direct thermal path printed circuit board and a single lens. The large array of LEDs are capable of producing light rays directed through the single lens to produce a beam of light to illuminate the outdoor area. The single lens is preferably a Fresnel lens. The housing is preferably capable of being sealed in a weather-tight manner. A second housing may at least partially surround the first housing such that at least one air passage is provided between the first housing and the second housing. A heat sink including a heat block in thermal communication with a plurality of heat tubes and fin assemblies may be in partial thermal contact with the LED module and in fluid communication with the at least one air passage. At least one fan may be provided in or in fluid communication with said at least one air passage to cool the heat sink. A digital interface may connect the LED module to a host computer to monitor and track information and trending for statistical process control.

An underwater light having a sealed polymer housing includes a rear housing component formed at least in part from a thermally conductive and electrically insulative material, an electronic assembly having at least one light-emitting element mounted thereto, the electronic assembly in thermal communication with the rear housing component, and a lens mounted to the rear housing component and forming a watertight seal therebetween, the lens and the rear housing component enclosing the electronic assembly. At least a portion of the rear housing component conducts heat away from the electronic assembly to cool the electronic assembly.

Illumination device which comprises multiple illumination modules, each provided with a corresponding group of light sources. A liquid cooling plant is connected to the light sources in order to dissipate heat generated by the latter. The cooling plant is provided with a heat exchanger comprising a manifold provided with a passage channel having an inlet branch and an outlet branch. The heat exchanger further comprises a transmission block, which carries the illumination modules mounted thereon and is provided with multiple cooling tracks, which are hydraulically connected, parallel to each other, to the inlet branch and to the outlet branch of the passage channel of the manifold. Each cooling track is arranged at a respective illumination module in order to transfer the heat generated by the light sources of such illumination module to a coolant fluid which traverses the cooling track.