There are provided an apparatus for heat exchange by using a braided fabric woven from a thermally conductive wire material and a light emitting diode (LED) lighting device. The apparatus comprises a braided fabric (1) woven from a thermally conductive wire material, and a heat dissipating or absorbing object (2) is fixed with the braided fabric (1) by using methods such as welding, adhering with a thermally conductive adhesive and casting, so as to ensure that heat energy is effectively conducted between the heat dissipating or absorbing object (2) and the thermally conductive wire of the braided fabric (1), and heat is dissipated to air or absorbed from air by means of a heat dissipating surface of the thermally conductive wire of the braided fabric (1).

This application discloses a color wheel apparatus, including a wavelength conversion layer, a sealed housing, a color wheel module, and a heat exchanger. The color wheel module is used to provide power for enabling an air flow to enter through an air inlet of a color wheel cavity and leave through an air outlet, so as to form a circulation air duct in which the air flow passes through the air inlet of the color wheel cavity, the air outlet, a heat exchange inlet, and a heat exchange outlet and then reaches the air inlet. During the implementation of the technical solution in the present invention, a complete circulation air duct used for heat dissipation is formed in a color wheel apparatus, and a driving force in the circulation air duct is directly implemented by using a color wheel module in a color wheel cavity, so as to enable the color wheel module in the color wheel apparatus to thoroughly exchange heat with an air flow in the circulation air duct, so that heat generated when the color wheel module works can be removed in time, thereby improving the working efficiency of the color wheel module, and extending the service life of the color wheel apparatus.

This application discloses a color wheel apparatus, including a wavelength conversion layer, a sealed housing, a color wheel module, and a heat exchanger. The color wheel module is used to provide power for enabling an air flow to enter through an air inlet of a color wheel cavity and leave through an air outlet, so as to form a circulation air duct in which the air flow passes through the air inlet of the color wheel cavity, the air outlet, a heat exchange inlet, and a heat exchange outlet and then reaches the air inlet. During the implementation of the technical solution in the present invention, a complete circulation air duct used for heat dissipation is formed in a color wheel apparatus, and a driving force in the circulation air duct is directly implemented by using a color wheel module in a color wheel cavity, so as to enable the color wheel module in the color wheel apparatus to thoroughly exchange heat with an air flow in the circulation air duct, so that heat generated when the color wheel module works can be removed in time, thereby improving the working efficiency of the color wheel module, and extending the service life of the color wheel apparatus.

The present invention provides a finned heat-exchange system, comprising a heat dissipation chamber, a fin, an air guide element and a base, wherein the heat dissipation chamber is isolated from the outside, and both the fin and the air guide element are connected to the base; and the air guide element and the fin are in communication with the heat dissipation chamber through the base to dissipate heat from the inside of the heat dissipation chamber.

A lighting device (100, 300, 400) is disclosed. The lighting device comprises a light source (110, 310, 410), an at least partially light transmitting envelope (120, 320, 420) and a dispenser (140, 340, 440). The envelope is arranged to define a sealed space (130, 330, 430) in which at least a portion of the light source is arranged. Further, the dispenser comprises a chemically reactive substance and is adapted to gradually release at least some of the chemically reactive substance to the sealed space so as to reduce contaminants and by-products that may be present in the sealed space.

A lighting device (100, 300, 400) is disclosed. The lighting device comprises a light source (110, 310, 410), an at least partially light transmitting envelope (120, 320, 420) and a dispenser (140, 340, 440). The envelope is arranged to define a sealed space (130, 330, 430) in which at least a portion of the light source is arranged. Further, the dispenser comprises a chemically reactive substance and is adapted to gradually release at least some of the chemically reactive substance to the sealed space so as to reduce contaminants and by-products that may be present in the sealed space.

A wavelength conversion device, an illumination device, and a projector that can efficiently cool a phosphor. A wavelength conversion device includes a substrate including a phosphor layer in which a phosphor is included, a rotating device configured to rotate the substrate, a circulating device that circulates a cooling gas to the substrate, and a housing configured to house the substrate and the circulating device. The housing includes a partition wall configured to separate a first space in which the cooling gas is circulated to the substrate by the circulating device and a second space in which the cooling gas radially delivered from the substrate according to the rotation of the substrate circulates.

A wavelength conversion device, an illumination device, and a projector that can efficiently cool a phosphor. A wavelength conversion device includes a substrate including a phosphor layer in which a phosphor is included, a rotating device configured to rotate the substrate, a circulating device that circulates a cooling gas to the substrate, and a housing configured to house the substrate and the circulating device. The housing includes a partition wall configured to separate a first space in which the cooling gas is circulated to the substrate by the circulating device and a second space in which the cooling gas radially delivered from the substrate according to the rotation of the substrate circulates.

A light source device including a plurality of solid-state light sources, and a cooling member having a plurality of cooling surfaces, the cooling member being configured to cool the plurality of solid-state light sources provided on the respective cooling surfaces.

A light source device including a plurality of solid-state light sources, and a cooling member having a plurality of cooling surfaces, the cooling member being configured to cool the plurality of solid-state light sources provided on the respective cooling surfaces.