Disclosed herein is a display apparatus having a cooling path provided to enhance cooling efficiency. The display apparatus includes a display panel configured to display images; a light source configured to radiate light toward the display panel; a bottom chassis disposed in rear of the light source; a case provided in rear of the bottom chassis; a circulative cooling path provided as to have air circulated surroundings of the bottom chassis.

A head housing for curing of resin pipeline lining used in heads for curing inner pipeline resin linings with significantly increased heat dissipation efficiency, having at least one cooling passage (6), which length S is more than twice the length L of the longitudinal part (1) of this housing.

A head housing for curing of resin pipeline lining used in heads for curing inner pipeline resin linings with significantly increased heat dissipation efficiency, having at least one cooling passage (6), which length S is more than twice the length L of the longitudinal part (1) of this housing.

A light source apparatus includes a light source, a first heat radiation unit configured to radiate heat from the light source, a wavelength conversion element configured to convert the light from the light source into light with a different wavelength, and a second heat radiation unit configured to radiate heat from the wavelength conversion element. The light source and the wavelength conversion element are disposed opposite to each other. A flowing direction of first cooling air flowing through the first heat radiation unit and a flowing direction of second cooling air flowing through the second heat radiation unit are same direction to each other.

A light source apparatus includes a light source, a first heat radiation unit configured to radiate heat from the light source, a wavelength conversion element configured to convert the light from the light source into light with a different wavelength, and a second heat radiation unit configured to radiate heat from the wavelength conversion element. The light source and the wavelength conversion element are disposed opposite to each other. A flowing direction of first cooling air flowing through the first heat radiation unit and a flowing direction of second cooling air flowing through the second heat radiation unit are same direction to each other.

A direct, plug-in replacement assembly for the halogen bulb used in existing lighting instruments that are employed in motion picture, video and stage productions. The assembly is self-contained and powered from the same socket as the original bulb. The assembly is designed to fit into the existing lighting instrument without any modification of that instrument. The assembly incorporates an LED array along with an electronic and mechanical system for thermal management. Standard phase-control AC dimmers are fully compatible with the assembly.

An optical element for transmission of light produced by a solid state emitter includes at least one diffuser element, and a reflector supported by the at least one diffuser element and paced-apart from the emitter, the reflector defining an annular lip having an aperture therein and an axis normal to a plane defined by the aperture. The reflector further includes a first frustoconical surface coupled with the annular lip and angling outwardly in a first direction at a first angle relative to the axis, a second frustoconical surface coupled to the first frustoconical surface and angled outwardly at a second angle in a second direction opposite to the first direction, and a third surface coupled with the second frustoconical surface and angling outwardly at a third angle.

An optical element for transmission of light produced by a solid state emitter includes at least one diffuser element, and a reflector supported by the at least one diffuser element and paced-apart from the emitter, the reflector defining an annular lip having an aperture therein and an axis normal to a plane defined by the aperture. The reflector further includes a first frustoconical surface coupled with the annular lip and angling outwardly in a first direction at a first angle relative to the axis, a second frustoconical surface coupled to the first frustoconical surface and angled outwardly at a second angle in a second direction opposite to the first direction, and a third surface coupled with the second frustoconical surface and angling outwardly at a third angle.

A lighting apparatus includes a light head, a driver box, multiple separating columns and a light source module. The light head has an Edison cap and a head body. The head body has a rotatable connector. The driver box has a first side and a second side for containing a driver circuit. The first side of the driver box has a fixing unit corresponding to the rotatable connector of the head body to selectively attach or detach the light head from the driver box by rotating the rotatable connector with respect to the fixing unit. The light source plate has a light source plate mounted with LED modules. The light source plate is fixed to the driver box with the multiple separating columns. The separating columns form an air gap between the driver box and the light source for heat dissipation.

A lighting apparatus includes a light head, a driver box, multiple separating columns and a light source module. The light head has an Edison cap and a head body. The head body has a rotatable connector. The driver box has a first side and a second side for containing a driver circuit. The first side of the driver box has a fixing unit corresponding to the rotatable connector of the head body to selectively attach or detach the light head from the driver box by rotating the rotatable connector with respect to the fixing unit. The light source plate has a light source plate mounted with LED modules. The light source plate is fixed to the driver box with the multiple separating columns. The separating columns form an air gap between the driver box and the light source for heat dissipation.