Patent ID: 7488185

Claim:
An electric connection box comprising: a casing having a bottom wall; an electronic circuit board being positioned approximately perpendicular to said bottom wall in said casing and having an electronic component; and a power circuit board being positioned approximately perpendicular to said bottom wall in said casing and having a power circuit; wherein said power circuit board includes a component area for mounting a heat generating component, said component area extending vertically and being positioned outside of a portion of said power circuit board opposite to said electronic circuit board, said electric connection box further comprising: a partition wall for separating said component area from said electronic circuit board, said partition wall being positioned in said casing so that a first air passage for allowing air to flow vertically along said component area is included in said casing; wherein a first inlet port connected to said first air passage is on said casing, and a first outlet port connected to said first air passage and positioned above said first inlet port is on said casing.