An electronic device comprising: a printed circuit board; a housing (2a, 2b) that houses the printed circuit board; a heating part (15, 16); and a cooling device, the cooling device comprising: a heat sink connected to one end of a heat pipe; a metal plate (50, 90) that is secured to the other end of the heat pipe; an elastic member (60, 70) that is secured to the metal plate; and a securing member that is attachable with the printed circuit board on which the heating part is mounted, and that is able to be secured to the elastic member by a fastening part such that the elastic member is elastically deformed and the metal plate is pushed to the heating part, wherein: the securing member comprises: a projection that is able to penetrate through a through-hole provided in the printed circuit board and is able to fit into the metal plate (50, 90), so as to position the metal plate (50, 90) in a state where the securing member is not secured to the elastic member (60, 70); and a base portion that is provided with the projection, and is able to be arranged such that the printed circuit board is sandwiched between the base portion and the metal plate (50, 90); the base portion is shaped to have two end portions and includes extended portions (83a, 83b) which have a substantially linear shape, are continuous with each other, and extend in the opposite direction; the elastic member (60, 70) is a leaf spring; and the elastic member (60, 70) comprises: a securing portion secured to the metal plate (50, 90) aside the heat pipe such that the securing portion is in contact with the metal plate (50, 90); and an elastic piece (62a, 62b) continuous with the securing portion and spaced apart from the metal plate (50, 90), wherein the elastic piece (62a, 62b) is formed with a securing hole (64a, 64b), and the elastic member (60, 70) is secured to the projection fitted into the metal plate (50, 90) with the fastening part inserted into the securing hole (64a, 64b) of the elastic member (60, 70). a printed circuit board; a housing (2a, 2b) that houses the printed circuit board; a heating part (15, 16); and a cooling device, the cooling device comprising: a heat sink connected to one end of a heat pipe; a metal plate (50, 90) that is secured to the other end of the heat pipe; an elastic member (60, 70) that is secured to the metal plate; and a securing member that is attachable with the printed circuit board on which the heating part is mounted, and that is able to be secured to the elastic member by a fastening part such that the elastic member is elastically deformed and the metal plate is pushed to the heating part, a heat sink connected to one end of a heat pipe; a metal plate (50, 90) that is secured to the other end of the heat pipe; an elastic member (60, 70) that is secured to the metal plate; and a securing member that is attachable with the printed circuit board on which the heating part is mounted, and that is able to be secured to the elastic member by a fastening part such that the elastic member is elastically deformed and the metal plate is pushed to the heating part, the securing member comprises: a projection that is able to penetrate through a through-hole provided in the printed circuit board and is able to fit into the metal plate (50, 90), so as to position the metal plate (50, 90) in a state where the securing member is not secured to the elastic member (60, 70); and a base portion that is provided with the projection, and is able to be arranged such that the printed circuit board is sandwiched between the base portion and the metal plate (50, 90); a projection that is able to penetrate through a through-hole provided in the printed circuit board and is able to fit into the metal plate (50, 90), so as to position the metal plate (50, 90) in a state where the securing member is not secured to the elastic member (60, 70); and a base portion that is provided with the projection, and is able to be arranged such that the printed circuit board is sandwiched between the base portion and the metal plate (50, 90); the base portion is shaped to have two end portions and includes extended portions (83a, 83b) which have a substantially linear shape, are continuous with each other, and extend in the opposite direction; the elastic member (60, 70) is a leaf spring; and the elastic member (60, 70) comprises: a securing portion secured to the metal plate (50, 90) aside the heat pipe such that the securing portion is in contact with the metal plate (50, 90); and an elastic piece (62a, 62b) continuous with the securing portion and spaced apart from the metal plate (50, 90), wherein the elastic piece (62a, 62b) is formed with a securing hole (64a, 64b), and the elastic member (60, 70) is secured to the projection fitted into the metal plate (50, 90) with the fastening part inserted into the securing hole (64a, 64b) of the elastic member (60, 70). a securing portion secured to the metal plate (50, 90) aside the heat pipe such that the securing portion is in contact with the metal plate (50, 90); and an elastic piece (62a, 62b) continuous with the securing portion and spaced apart from the metal plate (50, 90), wherein the elastic piece (62a, 62b) is formed with a securing hole (64a, 64b), and the elastic member (60, 70) is secured to the projection fitted into the metal plate (50, 90) with the fastening part inserted into the securing hole (64a, 64b) of the elastic member (60, 70).