| 摘要 |
PROBLEM TO BE SOLVED: To solve a problem such that, in a conventional infrared bulb used in heating, etc., it is necessary to mount a plurality of infrared bulbs when freely changing a caloric power because only one heating element is sealed within one glass tube. SOLUTION: In the bulb, there are electrically connected the internal lead lines to both ends of a heating element in the shape of bar or flat plate constituted by at least two carbon system materials and drawn the end of the internal lead line outside a glass tube. A radiant block formed in a material having a high heat and electric conductivity is closely adhered and attached to both ends of the heating element.
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