Collapsible booth

Claim 1

A SIDE WALL STRUCTURE FOR A COLLAPSIBLE BOOTH COMPRISING: A FLEXIBLE SHEET MEMBER HAVING A THIN, REFLECTIVE METAL FILM SECURED ON THE INNER SIDE THEREOF FOR REFLECTING HEAT; A PLURALITY OF ELONGATED, TUBULAR AND PLASTIC MEMBERS SECURED IN SIDE-BY-SIDE RELATION TO THE OUTER SIDE OF SAID SHEET MEMBER AND EXTENDING VERTICALLY FROM SUBSTANTIALLY THE BOTTOM EDGE TO SUBSTANTIALLY THE TOP EDGE THEREOF, EACH OF SAID TUBULAR MEMBERS BEING OF CONSTANT CROSS-SECTIONAL CONFIGURATION THROUGHOUT ITS LENGTH, EACH TUBULAR MEMBER HAVING SPACED INNER AND OUTER WALLS, SAID INNER WALL HAVING A SURFACE BONDED OVER SUBSTANTIALLY ITS ENTIRE AREA WITH THE OUTER SIDE OF SAID SHEET MEMBER AND EACH TUBULAR MEMBER HAVING A PLURALITY OF BRIDGING WALLS, AT LEAST ONE OF WHICH IS AN INTERNAL WALL, EXTENDING BETWEEN SAID INNER AND OUTER WALLS AND THEREBY DIVIDING THE INTERIOR OPENING OF SAID TUBULAR MEMBER INTO A PLURALITY OF VERTICALLY EXTENDING, HOLLOW CELLS OF RELATIVELY SMALL CROSS SECTION, SAID INNER, OUTER AND BRIDGING WALLS BEING RELATIVELY THIN, AND SAID TUBULAR MEMBERS BEING CLOSELY ADJACENT TO AND SEPARATE FROM EACH OTHER TO FACILITATE THE ROLLING UP OF SAID SIDE WALL STRUCTURE, AND SAID SHEET MEMBER AND SAID TUBULAR MEMBERS BEING ADAPTED TO FORM A WALL STRUCTURE HAVING A SUBSTANTIALLY CYLINDRICAL SHAPE.