Importance

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Abstract

In a ventilating device for a container which comprises a container frame consisting of tubular rail members, outer ventilation holes formed through the outer wall of the rail member so as to be exposed to the outside of the container, inner ventilation holes formed through the inner wall of the rail member so as to be exposed to the interior of the container, and a ventilation channel defined inside the rail member so as to connect the inner ventilation holes and the outer ventilation holes, this ventilating device further comprises a first groove which is formed in the inner wall of the rail member so as to extend along the longitudinal direction of the rail member, and a second groove which is formed in the outer wall of the rail member so as to extend substantially parallel to the first groove, the lower wall of the first groove and the upper wall of the second groove defining a part of the ventilation channel. According to this ventilating device, the flexural rigidity of the rail member can be increased without any substantial increase in its weight as compared with such conventional ventilating devices as are arranged in rail members as well, so that the bending and buckling strength of the container may be improved, for instance, against such loads as act on the container during suspension. In addition, the device is simple in structure, and allows easy quality control and operations such as inspection and cleaning.

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First Claim