| 摘要 |
PURPOSE: Provided is a sign using vacuum space which has an elongated life time by placing a sign or object to be displayed into a vacuum space, thereby a reflective material applied on the sign or object does not denatured. CONSTITUTION: The sign comprises a case(10) having an inner space(10b) defined by side walls and a cover(10a), provided with an exhaust pipe(10c), a sign(20) or 3-dimensional object(30) to be placed in the case. The inside of the case is evacuated through the exhaust pipe(10c). Therefore, the sign and the object can be kept in a vacuum without exposure to the air and thus the material used for manufacturing the sign or the object is not denatured or deteriorated. Accordingly, the life span of the sign and object can be elongated.
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