| 摘要 |
The present invention aims to provide a heating apparatus that can sufficiently suppress the occurrence of striae and the deterioration of optical properties, and that can reduce the maintenance burden. A heating apparatus 10 that is used for heating a flow path 90 for flowing out the molten glass includes an inner wall 21 which forms an entry hole 29 that a tip 91 of the flow path 90 can enter, heating portions 30 for heating the inner wall 21, and a high radiation portion 40 that is made of a high emissivity material. The high radiation portion 40 is arranged so as to face the tip 91 of the flow path 90 as well as a lower part thereof with a space therebetween when the heating apparatus 10 is used.
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