| 摘要 |
<p>There are problems in a prior art in that installation of a projector within a large balloon causes complicated installation and maintenance of the projector and malfunction of the projector due to heat upon operation thereof, or installation of the projector outside the large balloon disables isolation or minimization of an influence by external conditions such as temperature, wind, rain, and snow. These problems are solved by the present invention providing an image-displaying apparatus using a large balloon, which comprises a large balloon having a predetermined shape and installed on the ground or at a predetermined height therefrom, a projector installed at one side of the large balloon to project an image transmitted from an image transmitter, and a screen installed at the other side opposite to the one side of the large balloon so that the image projected from the projector can be displayed thereon. At this time, the large balloon further comprises a housing-accommodating bag at the one side where the projector is installed. The housing-accommodating bag includes a transparent window which faces the screen toward the interior of the large balloon and maintains a sealing state. The large balloon comprises a housing fitted into and joined to the housing-accommodating bag by being inserted from the outside in a state where a front face of the housing partially opened corresponding to the transparent window faces the interior of the housing-accommodating bag, and the projector is installed within the housing. A housing cover is provided with an intake fan and a discharge fan, so that temperature in the housing in which the projector is installed can be optimized, whereby itis possible to stably operate the projector for a long time.</p> |
