Patent ID: 7040707

Claim:
A seat back of automotive seat comprising: a lower seat back portion including a foam padding provided therein, said lower seat back portion having a forward surface facing to a side forwardly of said automotive seat and a backward side facing to a side backwardly of the automotive seat; an upper seat back portion firmly connected with an upper area of said lower seat back portion, wherein said upper seat back portion includes a foam padding provided therein and has a forward surface facing to a side forwardly of said automotive seat and a backward side facing to a side backwardly of the automotive seat; said foam padding of said upper seat back portion being greater in hardness than said foam padding of said lower seat back portion; and a vent means allowing air to flow at said lower and upper seat back portions, said vent means comprising: a first vent hole means defined in said lower seat back portion, said first vent hole means comprising a first through-hole formed through said lower seat back portion so as to open in both said forward and backward surfaces of said lower seat back portion; and a second vent hole means defined between said upper and lower seat back portions, said second vent hole means comprising a second through-hole formed through and between said upper and lower seat back portions so as to open in both said forward and backward surfaces of said upper and lower seat back portions.