A light source device includes a housing having a great length along a predetermined direction, a plurality of light emitting elements which are placed in the housing and are arranged along the predetermined direction, and one or more heat dissipation members which are placed in the housing and are thermally connected with the light emitting elements. A first intake port through which air is sucked into the housing is provided in one end in the housing. An exhaust port through which air is discharged to an outside is provided in the other end in the housing. A space where the other side in the predetermined direction faces the heat dissipation member is formed in the housing. A second intake port through which air is sucked into the space from the outside is provided in a side surface between the first intake port and the exhaust port in the housing.

A heat sink comprises a heat sink body, which in some embodiments is a plastic heat sink body, and a thermally conductive layer disposed over the heat sink body. In some embodiments the thermally conductive layer comprises a copper layer. A light emitting diode (LED)-based lamp comprises the aforementioned heat sink and an LED module including one or more LED devices in which the LED module is secured with and in thermal communication with the heat sink. Some such LED-based lamps may have an A-line bulb configuration or an MR or PAR configuration. Disclosed method embodiments comprise forming a heat sink body and disposing a thermally conductive layer on the heat sink body. The forming may comprise molding the heat sink body, which may be plastic. In some method embodiments the heat sink body includes fins and the disposing includes disposing the thermally conductive layer over the fins.

Provided is a cooking appliance including: a main body including a cooking chamber, a door positioned at a front of the main body to open and close the cooking chamber, a camera disposed toward the cooking chamber to obtain a photograph an inside of the cooking chamber, a camera cooling fan configured to intake external air to cool the camera, and an air guide configured to form a flow path such that external air is provided toward the camera by the camera cooling fan. The air guide guides air passed through the camera to be discharged toward a front of the camera cooling fan.

A lighting apparatus which is held in a state of being suspended from a mounting bracket fixed to a ceiling surface and emits illumination light is provided, and the lighting apparatus includes: an illumination light source for generating the illumination light disposed inside a housing; a projector disposed in an inner space of the housing and configured to project an image onto a projection surface; and a lint disposed in an upper portion inside the housing, wherein an air intake and an air outlet are formed at such positions in the housing that air flow generated by the fan is sucked from a lower portion of the housing, passes upward through a vicinity of the illumination light source and the projector, and is exhausted from the upper portion of the housing.

A vehicular lamp includes a projection lens made of resin; a light source that is disposed behind the projection lens, the vehicular lamp being configured such that light from the light source is emitted forward through the projection lens; a wind generator configured to generate wind; and a wind guide path configured to guide wind generated by the wind generator to a position where the wind hits a surface of the projection lens.

Disclosed embodiments relate to a combination axial fan and LED lighting system configured to fit into the footprint of a standard ceiling tile. Disclosed embodiments further include ceiling tiles with a built-in fan and/or LED lighting. The disclosed systems may include 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 inventions include an airflow surface to direct air existing the fan cavity along an LED light fixture. Moreover, disclosed embodiments include one or more UV light sources which irradiate contaminants as air flows through the ceiling tile.

A light source unit includes a heat-dissipation member having positive expansibility that volume is expanded with an increase in temperature, the heat-dissipation member having a through-hole, a heating component having a heating component body and a pin terminal, the heating component body fixed to the heat-dissipation member in one opening side of the through-hole, the pin terminal connected to the heating component body, and inserted through the through hole and protruding from the other opening side of the through-hole of the heat-dissipation member a substrate fixed to the heat-dissipation member in the other opening side of the through-hole and having a wiring connected to the pin terminal, and a buffering member having negative thermal-expansibility that volume is contracted with an increase in temperature.

An object is to provide an LED floodlight that enables efficient use of a cooling means, e.g., a heat dissipation fan, and can pursue a reduction in size. Therefore, it is an LED floodlight wherein a panel-shaped floodlight portion formed as a floodlight surface is formed such that a plurality of LEDs is arranged on a front surface, a heatsink having a plurality of heat dissipation plates on a back surface of the panel-shaped floodlight portion, and a cooling fan configured to send air toward a central portion of the heatsink are arranged in this order, the LED floodlight is formed of an appropriate power supply circuit, wherein a plurality of heat dissipation plates of a heatsink is radially arranged from a central portion to a periphery, a central portion of a coupling surface between heat dissipation plates of the heatsink protrudes toward a cooling fan configured to send air and has a curved surface portion from a central portion to a periphery.

An LED illumination apparatus includes an LED device; a base having a concavity for receiving the LED device; a heat sink including a plate coupled to the base and a plurality of fins extending from a surface of the plate opposite the base, the fins extending laterally beyond sides of the plate; a cooling fan for forcing air over the fins; and a casing housing the LED substrate, the base, the heat sink, and the cooling fan.

The exemplary embodiments herein comprise a back to back electronic display assembly having a first display assembly positioned back to back with a second display assembly. A plenum is preferably positioned in between the first and second display assemblies with a first gap defined between the plenum and the first display assembly and a second gap defined between the plenum and the second display assembly. A fan is preferably positioned to force air through the first and second gaps. A plenum fan may be used to circulate air around the plenum. Preferably, the second display assembly can move relative to the first display assembly to provide access to the interior of the plenum.