Patent ID: 7568519

Claim:
A cooling device for a heat source, comprising: (1) a heat sink including a coolant, said heat sink comprising: (a) a first heat sink member with a heat source arranged at an outer surface of said heat sink; and (b) a second heat sink member provided with a plurality of holes, said coolant that cools said heat source being made to pass through said holes, said second heat sink member having a first side, and a second side opposite to the first side; (2) a header disposed on said first side, said first heat sink member disposed on said second side, said header and said second heat sink member surrounding a first space, said first heat sink member and second heat sink member surrounding a second space, said first space disposed on said first side, said second space disposed on said second side; (3) an inlet port whereby said coolant is made to flow into said first space; (4) an outlet port whereby said coolant in said second space is made to flow out, said inlet port disposed adjacent said first space on said first side, said outlet port disposed on said second side; (5) a plurality of upright plates provided on a downstream side of said header in said first space, each of said plurality of upright plates disposed adjacent to and downstream of a separate one of a respective single one of the plurality of holes, the plates of the plurality of upright plates being separated from each other, wherein a gap between each of said upright plates and a wall face of said header on a side of said header opposite said holes is eliminated; and a plurality of baffle plates provided on an upstream side of said holes within said second space, each of said plurality of baffle plates disposed adjacent to and upstream of a separate one of a respective one of the plurality of holes, wherein each of said upright plates and said baffle plates respectively are made of an arcuate shape adjacent a respective hole of said plurality of holes, an arc of said arcuate shape being circumferentially around a respective hole.