Abstract: The suspended travel device for panels includes traveling rails, crossing rails provided where the traveling rails cross each other (in a cross-like manner), and suspended vehicles suspended from these rails and adapted to travel and turn along the rails. The crossing rail is equipped with wheel bottom walls arranged substantially at the same height as wheel bottom surfaces of traveling rail, reception wheels arranged in a direction inclined with respect to the traveling direction of a vehicle body and vehicle bases adapted to rotatably support the reception wheels.

Abstract: A ceiling system bar (1) is fixed to a hanging bolt (17), which is set firmly on a steel frame base, in such a manner that an opened portion of the ceiling system bar (1) is directed downward. The hook frames (22) of ceiling panels (21) are engaged via air-tight members with F-shaped frame projections (6) which are provided on both lower side portions of the ceiling system bar (1). Panel holders (30) are provided so as to extend over the opposed portions of the ceiling panels (21) and ceiling system bar (1) to thereby join the ceiling panels (21) to the ceiling system bar (1). A floor system bar (40) is provided on a floor, which is opposed to the ceiling system bar (1), in such a manner that an opened portion of the floor system bar (40) is directed upward.