Drainage structure of electric parts accommodation box

Abstract

A drainage structure of an electric parts accommodation box includes a drainage port formed on a bottom wall of the box, a cut-out portion that is continuous with the drainage port, a tip of which tapers off to form an acute angle, and a water-leading groove that is continuous with the tip, formed on an outer surface of the bottom wall. With this, a droplet that sticks to the water-leading groove disposed on the outer surface of the bottom wall is brought into contact with a droplet that sticks to the tip of the cut-out portion disposed on an inner surface of the bottom wall to flow out a droplet that sticks to a peripheral edge of the drainage port to the outer surface of the bottom wall. This more effectively drains liquid droplets that would otherwise remain within the box to reduce current leaks caused by such droplets coming into contact with electrical components in the box, such as closely spaced bus bars.

Dependencies are inferred from the claim text.