Patent ID: 10112332

Abstract:
When a heating device is formed which includes at least one or more heaters 4n, 4a, 4b, 4c and 4d that are provided on the outer circumferential surfaces 2f and 3f of at least one of a heating cylinder 2 and an injection nozzle 3 to heat at least one of the heating cylinder 2 and the injection nozzle 3, at least some heaters 4a, 4b, 4c, . . . of all the heaters 4n, 4a, . . . are formed with air cooling-capable heaters 4as, 4bs and 4cs in which a panel member 5 formed of a material R having thermal conductivity is interposed between the heaters 4a, 4b, 4c, . . . and the outer circumferential surfaces 2f and 3f of at least one of the heating cylinder 2 and the injection nozzle 3, in which an air path 6 for air cooling is formed in the panel member 5 and in which an air outlet and inlet portion 8 allowing air A to be passed from an air supply portion 7 is provided in the air path 6.