| 摘要 |
A heat generating unit of the present invention is formed such that: a band-like heat generating element (2) formed with a film sheet raw material of a material including a carbon-based substance and having a two-dimensional isotropic thermal conduction is enclosed in a container (1); and heat generating element holder portions (2a) at end portions of the heat generating element (2) are held by retainers (3). The retainers (3) are each structured to have a hook-received portion (3a) around which corresponding heat generating element holder portion (2a) is wrapped, a hook portion (3b) attached to the hook-received portion (3a) so as to clamp the heat generating element holder portion (2a), and an engagement-stop portion (3c) extending from the hook-received portion (3a) to engagingly stop the heat generating element holder portion (2a).
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