The invention provides a heat dissipating module configured to dissipate heat of at least one heating element of a projection device. The heat dissipating module includes a first radiator, a second radiator, a pipe, and at least one fan. The second radiator is disposed opposite to the first radiator. The heating element, the first radiator, and the second radiator are connected to each other through the pipe to form a loop. A working fluid is configured to be filled in the pipe, and the working fluid flows through the first radiator after flowing through the second radiator for heat exchange, and the working fluid flowing into the first radiator flows to the heating element for cyclic heat dissipation after heat exchange again through the first radiator. The fan is configured between the first radiator and the second radiator.

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.

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 adjustable end cap for a high intensity LED light system includes an end cap body, a pivot base coupled to the end cap body and one or more adjustable fittings pivotally secured to the pivot base. Both coolant and electrical fittings can be provided. The end cap body defines passages therein that communicate with the coolant and electrical passages in the LED device. The coolant and electrical fittings can be pivoted transverse to the longitudinal axis of the LED device. Ninety degrees of pivot range for each fitting can be provided in one example.

An adjustable end cap for a high intensity LED light system includes an end cap body, a pivot base coupled to the end cap body and one or more adjustable fittings pivotally secured to the pivot base. Both coolant and electrical fittings can be provided. The end cap body defines passages therein that communicate with the coolant and electrical passages in the LED device. The coolant and electrical fittings can be pivoted transverse to the longitudinal axis of the LED device. Ninety degrees of pivot range for each fitting can be provided in one example.

A light stack having an elongate body having a length extending from a proximal end to a distal end of the elongate body. A plurality of light emitting diode (LED) arrays adjustably coupled with the elongate body and arranged along the length thereof and a control module coupled with the plurality of LED arrays, wherein the each of the plurality of LED arrays is operable to pivot, thereby forming an angle relative to the elongate body. The control module configured to individually transition each of the plurality of LED arrays between a light emitting condition and a non-light emitting condition. The plurality of LED arrays configured to be adjustable to pivot on an axis at an angle relative to the elongate body.

A light stack having an elongate body having a length extending from a proximal end to a distal end of the elongate body. A plurality of light emitting diode (LED) arrays adjustably coupled with the elongate body and arranged along the length thereof and a control module coupled with the plurality of LED arrays, wherein the each of the plurality of LED arrays is operable to pivot, thereby forming an angle relative to the elongate body. The control module configured to individually transition each of the plurality of LED arrays between a light emitting condition and a non-light emitting condition. The plurality of LED arrays configured to be adjustable to pivot on an axis at an angle relative to the elongate body.

A light source cooling body (100), a light source assembly, a luminaire and a method to manufacture a light source cooling body or a light source assembly are provided. The light source cooling body comprises a homogeneous body (104) made of a thermally conductive material. The homogenous body comprises an open space that comprises a wick structure, a condenser (112) and an evaporator (116). Near the evaporator the light source cooling body has an interface area (102) to thermally couple with a light source and to receive heat from the light source. The condenser is arranged away from the interface area. A portion 114 of the open space is tubular shaped. The open space may hold a cooling liquid partially in the gaseous phase and partially in the liquid phase and the wick structure is configured to transport the cooling material in the liquid phase towards the evaporator.

A light source cooling body (100), a light source assembly, a luminaire and a method to manufacture a light source cooling body or a light source assembly are provided. The light source cooling body comprises a homogeneous body (104) made of a thermally conductive material. The homogenous body comprises an open space that comprises a wick structure, a condenser (112) and an evaporator (116). Near the evaporator the light source cooling body has an interface area (102) to thermally couple with a light source and to receive heat from the light source. The condenser is arranged away from the interface area. A portion 114 of the open space is tubular shaped. The open space may hold a cooling liquid partially in the gaseous phase and partially in the liquid phase and the wick structure is configured to transport the cooling material in the liquid phase towards the evaporator.