A connector (1, 2) comprising: a terminal fitting; an insulating housing (20, 120) having a terminal accommodation chamber (21a, 121a) in which the terminal fitting is accommodated, and adapted to be attached to a casing (Ca) of an installation target device, wherein the housing (20, 120) includes a fitting portion (21b, 121b) that has part of the terminal accommodation chamber (21a, 121a) inside the fitting portion (21b, 121b) and is to be disposed in a state of projecting from a wall face of the casing (Ca), and to which a counterpart fitting portion of a counterpart housing is fitted; a metal shield shell (30, 130) including a tubular shield portion that accommodates the fitting portion (21b, 121b); and an insulating heat dissipation member (60, 160) that takes heat from the terminal fitting and dissipates the heat, wherein the heat dissipation member (60, 160) includes a heat absorbing portion (61, 161) that comes into contact with the terminal fitting in the terminal accommodation chamber (21a, 121a) and takes heat from the terminal fitting, and a heat transfer portion (62, 162) that transfers the heat taken by the heat absorbing portion (61, 161) to a heat transfer target portion outside the terminal accommodation chamber (21a, 121a), wherein the heat transfer target portion is part of the metal shield shell (30, 130), wherein the housing (20, 120) further includes a flange portion (22, 122) that is adapted to bring a first annular face (22a, 122a) in an axial direction into contact with the wall face of the casing (Ca) and in which part of the terminal accommodation chamber (21a, 121a) is disposed, characterized in that the metal shield shell (30, 130) includes a shield flange portion that is adapted to hold the flange portion (22, 122) between the shield flange portion and the wall face of the casing (Ca) from a second annular face (22b, 122b) in the axial direction, the second annular face (22b, 122b) being opposite to the first annular face (22a, 122a), and a fixing portion adapted to fix the shield flange portion to the casing (Ca), and in that a heat transfer chamber (32b, 132c) that accommodates the heat transfer portion (62, 162) with the heat transfer portion (62, 162) coming into contact with the shield flange portion is formed between the flange portion (22, 122) and the shield flange portion. a terminal fitting; an insulating housing (20, 120) having a terminal accommodation chamber (21a, 121a) in which the terminal fitting is accommodated, and adapted to be attached to a casing (Ca) of an installation target device, wherein the housing (20, 120) includes a fitting portion (21b, 121b) that has part of the terminal accommodation chamber (21a, 121a) inside the fitting portion (21b, 121b) and is to be disposed in a state of projecting from a wall face of the casing (Ca), and to which a counterpart fitting portion of a counterpart housing is fitted; a metal shield shell (30, 130) including a tubular shield portion that accommodates the fitting portion (21b, 121b); and an insulating heat dissipation member (60, 160) that takes heat from the terminal fitting and dissipates the heat, wherein the heat dissipation member (60, 160) includes a heat absorbing portion (61, 161) that comes into contact with the terminal fitting in the terminal accommodation chamber (21a, 121a) and takes heat from the terminal fitting, and a heat transfer portion (62, 162) that transfers the heat taken by the heat absorbing portion (61, 161) to a heat transfer target portion outside the terminal accommodation chamber (21a, 121a), wherein the heat transfer target portion is part of the metal shield shell (30, 130), wherein the housing (20, 120) further includes a flange portion (22, 122) that is adapted to bring a first annular face (22a, 122a) in an axial direction into contact with the wall face of the casing (Ca) and in which part of the terminal accommodation chamber (21a, 121a) is disposed, characterized in that the metal shield shell (30, 130) includes a shield flange portion that is adapted to hold the flange portion (22, 122) between the shield flange portion and the wall face of the casing (Ca) from a second annular face (22b, 122b) in the axial direction, the second annular face (22b, 122b) being opposite to the first annular face (22a, 122a), and a fixing portion adapted to fix the shield flange portion to the casing (Ca), and in that a heat transfer chamber (32b, 132c) that accommodates the heat transfer portion (62, 162) with the heat transfer portion (62, 162) coming into contact with the shield flange portion is formed between the flange portion (22, 122) and the shield flange portion.