▎ 摘　　要

NOVELTY - The pneumatic tire (2) has a longitudinal groove heating unit that is arranged and installed inside a groove face layer (8) to heat a groove surface layer of longitudinal groove through heat generation of a heat generating fin material. A longitudinal groove heat generation unit is arranged on a graphene to generate heat when the electrical energy stored in the graphene is applied when an electric signal from an electronic control device (12) is applied. A tread (4) is planted in a certain form so that heat generated by the heating fin material is dissipated to a tread block between the longitudinal grooves. USE - Pneumatic tire. ADVANTAGE - The pneumatic tire comprises a vertical groove heating unit that is installed in a longitudinal groove, and thus enables improving the grip and steering ability of the tire by rapidly melting and discharging snow remaining in the longitudinal groove through heat generated by the longitudinal grooves heating unit, and also improving the gripping force on the road surface by improving the rubber properties of the tread in cold weather. DESCRIPTION OF DRAWING(S) - The drawing shows an enlarged sectional view of a pneumatic tire. 2Pneumatic tire 4Tread 6Longitudinal groove 8Groove face layer 12Electronic control device