air conditioning duct structure VEHICULAR, METHOD OF FORMING and electric wiring structure

An air conditioning duct structure is included in a plank beam member vehicular edge. The material for the sheath (142) consists of an insulating and absorbent material and is bonded to the surface of a sheet material for the beam member (141) which is then in a semi hanger form -tubulaire so as to position the material for the sheath (142) therein thereby forming beam member body (14a, 14b). Combining the beam member body (14a, 14b) by joining the joining surfaces that face each other to thereby form a closed tubular profile. Obtaining of vibration damping, sound absorption and thermal insulation functions with an inner surface sheet member (63) of an air conditioning duct is achievable. Forming an air conditioning duct (60) extending across the width of a vehicle by attaching a metallic reinforcing member (61) and a resin cover (62). One puts the sheet member (63) between the reinforcing element (61) and the cover (62).