Abstract: A video display device includes: a video processing unit including a light source and optical components, which generates and displaying video signals; and a cooling mechanism unit cooling the light source and the optical components, wherein the cooling mechanism unit includes an air cooling fan generating cooling air for cooling the optical components to be circulated in the device, a heat exchanger arranged in a flow path of the circulating cooling air, performing heat exchange of the cooling air obtained after the cooling of the optical components from a high temperature to a low temperature, a cooler cooling heat generated in the light source and heat generated in the heat exchanger by a cooling liquid, and a circulating thermal regulator circulating the cooling liquid with respect to the cooler while managing a liquid temperature of the cooling liquid so as to be a constant temperature.

Abstract: A video display device includes: a video processing unit generating and displaying video signals; and a cooling mechanism unit cooling a component to be cooled in the video processing unit, wherein the cooling mechanism unit includes a heat-receiving plate installed at the component to be cooled to receive heat generated at the component to be cooled, a heat conduction member transmitting heat of the heat-receiving plate, a cooler cooling heat transmitted by the heat conduction member by a cooling liquid, and a circulating thermal regulator circulating the cooling liquid with respect to the cooler while managing a liquid temperature of the cooling liquid so as to be a constant temperature.

Abstract: There is provided a lamp burst sound reduction structure which may have an enlarged part in an intermediate position of a duct through which cooling air for cooling a light emitting unit of a lamp flows, the enlarged part may have a cross section area larger than a cross section area of the duct, the lamp being a light source of a projector.

Abstract: Disclosed herein is a heat radiating structure for radiating the heat generated by a lamp in an image projecting apparatus for projecting an image onto a screen to display the image thereon, including a heat sink for radiating heat generated by the lamp, the heat sink including heat transfer means for transferring the heat from the lamp, the heat transfer means being held in close contact with the lamp, heat storage means for storing the heat transferred from the lamp through the heat transfer means, and a plurality of fins serving as heat radiating means for radiating the heat stored by the heat storage means, wherein the heat transfer means, the heat storage means, and the heat radiating means are of a separable structure.

Abstract: There is provided a lamp burst sound reduction structure which may have an enlarged part in an intermediate position of a duct through which cooling air for cooling a light emitting unit of a lamp flows, the enlarged part may have a cross section area larger than a cross section area of the duct, the lamp being a light source of a projector.

Abstract: A liquid crystal panel in which temperature rise of the liquid crystal panel is sufficiently restrained by cooling the panel by means of a cooling liquid, and exudation of the cooling liquid toward the liquid crystal material is prevented. Disclosed are cover members attached to the liquid crystal panel that form cavities on the light entrance and exit sides of the panel. The cover members are such that a sealed portion of the liquid crystal material is not in contact with the cavities. The cover members are light transmitting. The cavities are filled with the cooling liquid.

Abstract: Disclosed herein is a heat radiating structure for radiating the heat generated by a lamp in an image projecting apparatus for projecting an image onto a screen to display the image thereon, including a heat sink for radiating heat generated by the lamp, the heat sink including heat transfer means for transferring the heat from the lamp, the heat transfer means being held in close contact with the lamp, heat storage means for storing the heat transferred from the lamp through the heat transfer means, and a plurality of fins serving as heat radiating means for radiating the heat stored by the heat storage means, wherein the heat transfer means, the heat storage means, and the heat radiating means are of a separable structure.