An electronic device comprising: a heat sink including a plurality of fins (11, 12) arrayed in a first direction (X1-X2), a heat pipe having a first extension extending in the first direction (X1-X2), and a heat receiver, wherein a second direction (Z1-Z2) extends perpendicularly to the first direction (X1-X2), a third direction (Y1-Y2) extends perpendicularly to the first direction (X1-X2) and the second direction (Z1-Z2), and when the heat pipe is viewed in the third direction (Y1-Y2), the heat pipe includes a second extension spaced from the first extension in the second direction (Z1-Z2) and extending in the first direction (X1-X2), and a joint which interconnects the first extension and the second extension and which is curved, the fins (11, 12) include a plurality of first fins arrayed along the first extension and the second extension and a second fin disposed around a position of the joint, the heat receiver includes a highly conductive portion, heat generating elements being held in contact with the highly conductive portion, an air flow path, the heat sink being disposed in the air flow path; and a first wall and a second wall facing each other in the first direction (X1-X2) and defining the air flow path therebetween, wherein one of the first fins which is positioned at an end of the first fin array is disposed along the first wall, and the second fin is disposed along the second wall, characterized in that the air flow path includes a first area (S2R) and a second area (S2L) in which there is generated an air flow faster than an air flow generated in the first area (S2R), the second area (S2L) being positioned directly in line with the direction of the air flow generated by a cooling fan and the first area (S2R) being positioned obliquely to the direction of the air flow generated by the cooling fan, and the heat sink is disposed in the air flow path such that the joint of the heat pipe is positioned in the first area (S2R). a heat sink including a plurality of fins (11, 12) arrayed in a first direction (X1-X2), a heat pipe having a first extension extending in the first direction (X1-X2), and a heat receiver, a plurality of fins (11, 12) arrayed in a first direction (X1-X2), a heat pipe having a first extension extending in the first direction (X1-X2), and a heat receiver, wherein a second direction (Z1-Z2) extends perpendicularly to the first direction (X1-X2), a third direction (Y1-Y2) extends perpendicularly to the first direction (X1-X2) and the second direction (Z1-Z2), and when the heat pipe is viewed in the third direction (Y1-Y2), the heat pipe includes a second extension spaced from the first extension in the second direction (Z1-Z2) and extending in the first direction (X1-X2), and a joint which interconnects the first extension and the second extension and which is curved, the fins (11, 12) include a plurality of first fins arrayed along the first extension and the second extension and a second fin disposed around a position of the joint, the heat receiver includes a highly conductive portion, heat generating elements being held in contact with the highly conductive portion, an air flow path, the heat sink being disposed in the air flow path; and a first wall and a second wall facing each other in the first direction (X1-X2) and defining the air flow path therebetween, wherein one of the first fins which is positioned at an end of the first fin array is disposed along the first wall, and the second fin is disposed along the second wall, characterized in that the air flow path includes a first area (S2R) and a second area (S2L) in which there is generated an air flow faster than an air flow generated in the first area (S2R), the second area (S2L) being positioned directly in line with the direction of the air flow generated by a cooling fan and the first area (S2R) being positioned obliquely to the direction of the air flow generated by the cooling fan, and the heat sink is disposed in the air flow path such that the joint of the heat pipe is positioned in the first area (S2R).