An oven comprising: - a frame defining a cooking chamber, said frame having a front opening for access to the cooking chamber and a top opening and a bottom opening for air passage, - a door, which is mounted in an articulated manner to said frame and is adapted to move between an open position, to allow access to the cooking chamber and a closed position, to close the front opening and prevent access to the cooking chamber, wherein said door comprises a support structure which supports an outer panel, an inner panel and at least one intermediate panel (22b, 22c) between the outer panel and the inner panel, said panels (22a-22d) being so arranged as to define respective cavities (23a, 23b, 23c) therebetween, each cavity being defined laterally by the support structure and being open at its top and bottom so that, when the door is in the closed position, the top and bottom openings of the cavity face the top and bottom air passage openings (5, 6) of the frame, - LED supporting means connected to the support structure, - LED lighting means mounted to the LED supporting means to direct the light beam generated thereby to the cooking chamber, when the door is in the closed position, wherein the LED lighting means are placed in the cavity formed between the outer panel and the intermediate panel adjacent to the outer panel, - said support structure comprises two posts (24, 25), each cavity being defined at its sides by said two posts (24, 25), each post (24, 25) comprising respective opposed seats (24a, 24b, 25a, 25b) for receiving and supporting the panels, - each post (24, 25) comprises a longitudinal support (26, 28) which substantially extends between the lower end and the upper end of the door and a transverse support (27, 29) which is coupled to the longitudinal support (26, 28), and overhangs toward the interior of the door in the direction of the longitudinal support and the transverse support of the other post, said seats (24a, 24b, 25a, 25b) being formed in their respective transverse supports (27, 29), - said longitudinal support (26, 28) is hollow and has an inner channel open at its top and its bottom, with respective top and bottom openings (26b, 26c) which, when the door is in the closed position, face the top and bottom openings of the frame, characterized in that said LED supporting means are connected to the longitudinal support and comprise an angular structure having a portion for attachment to the longitudinal support and a portion for supporting the LED lighting means. - a frame defining a cooking chamber, said frame having a front opening for access to the cooking chamber and a top opening and a bottom opening for air passage, - a door, which is mounted in an articulated manner to said frame and is adapted to move between an open position, to allow access to the cooking chamber and a closed position, to close the front opening and prevent access to the cooking chamber, wherein said door comprises a support structure which supports an outer panel, an inner panel and at least one intermediate panel (22b, 22c) between the outer panel and the inner panel, said panels (22a-22d) being so arranged as to define respective cavities (23a, 23b, 23c) therebetween, each cavity being defined laterally by the support structure and being open at its top and bottom so that, when the door is in the closed position, the top and bottom openings of the cavity face the top and bottom air passage openings (5, 6) of the frame, - LED supporting means connected to the support structure, - LED lighting means mounted to the LED supporting means to direct the light beam generated thereby to the cooking chamber, when the door is in the closed position, wherein the LED lighting means are placed in the cavity formed between the outer panel and the intermediate panel adjacent to the outer panel, - said support structure comprises two posts (24, 25), each cavity being defined at its sides by said two posts (24, 25), each post (24, 25) comprising respective opposed seats (24a, 24b, 25a, 25b) for receiving and supporting the panels, - each post (24, 25) comprises a longitudinal support (26, 28) which substantially extends between the lower end and the upper end of the door and a transverse support (27, 29) which is coupled to the longitudinal support (26, 28), and overhangs toward the interior of the door in the direction of the longitudinal support and the transverse support of the other post, said seats (24a, 24b, 25a, 25b) being formed in their respective transverse supports (27, 29), - said longitudinal support (26, 28) is hollow and has an inner channel open at its top and its bottom, with respective top and bottom openings (26b, 26c) which, when the door is in the closed position, face the top and bottom openings of the frame,