Bosom furnace

Abstract

A bosom furnace is provided with a build-in battery (1) and a heater (3) in a plastic-made casing (2), a radiating fin (4) made of metal is fixed on the surface of the casing (2). The casing is provided with a throughhole (8) for exposing the heater outside on a flashing (5) overlapped on the inner side of the radiating fin. The casing is provided with a circuit plaque (7) formed after connectingthe heater in the inner side of the flashing, for guiding the heater into the throughhole to thermally join with the inner wall of the radiating fin. Further, a joining piece (24) for interpenetrating the flashing by a water sealing structure is arranged on the radiating fin; the radiating fin (4) is connected with the casing (2) through the joining piece (24). In addition, the inner wall of the radiating fin and the surface of the flashing are connected with each other annularly with a water enclosed state in a region of the outer side of the throughhole enclosing the flashing. In this way, the casing may be made of plastics, also the radiating fin of the metal plate may be connected with the casing with water enclosed state. The assembly of the heater is simple, efficiency is high, costis less and the bosom furnace may be manufactured in enormous quantities.

Description

technical field [0001] The present invention relates to a body warmer using a battery heating heater. Background technique [0002] Patent Document 1 discloses a body warmer in which a battery is built in a case and a heater is heated by the battery. figure 1 A body warmer disclosed in Patent Document 1 is shown. This arm warmer includes a rechargeable battery 91 , a heater circuit 94 (the heater circuit 94 has a heater 93 that generates heat when energized by the battery 91 ), and a case 92 that accommodates the heater circuit 94 . In this body warmer, cylindrical batteries 91 are arranged in parallel, housed in a casing 92, and a heater 93 built in the casing 92 is energized to generate heat. Patent Document 1: JP Unexamined Patent Publication No. 11-70137 [0003] figure 1 The warmer, directly heats the shell with a heater. This structure does not effectively warm the casing in a body warmer of the casing made of plastic. Because of the poor thermal conductiv...

AI Technical Summary

Problems solved by technology

However, since the body warmer of this structure is fixed on the surface with parts (radiating fins 84) different from the outer shell 82, it is difficult to become a waterproof structure, and there is a disadvantage that moisture intrudes into the interior in some usage environments.

in addition, figure 2 Since the heater 83 is thermally combined with the cooling fin 84, the heater 83 has a complicated assembly structure and has the disadvantage of high assembly cost.

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