Material feeding device

特許 係属中 PROBLEM TO BE SOLVED: To provide a material feeding device which can raise the supply temperature of a material element and supply the material element stably. ; SOLUTION: A vessel 10 of the material feeding device is constituted of a crucible 1 and an orifice 3. The crucible 1 has a cylindrical form, a prismatic form or the like and is configured to have a hollow shape. A heat source 2 such as a heater is arranged at the periphery of the crucible 1, and the orifice 3 having an opening part 3a is provided in the supply direction of the material element of the crucible 1.