| US 7,539,401 B2 | ||
| Heating unit and resin sheet heating apparatus | ||
| Toshihiro Takai, Aichi-gun (Japan); Yasuyoshi Ohashi, Aichi-gun (Japan); and Kazushi Hayashi, Aichi-gun (Japan) | ||
| Assigned to Asano Laboratories Co., Ltd., Aichi-ken (Japan) | ||
| Filed on Nov. 10, 2006, as Appl. No. 11/558,513. | ||
| Claims priority of application No. P2006-232255 (JP), filed on Aug. 29, 2006. | ||
| Prior Publication US 2008/0124061 A1, May 29, 2008 | ||
| Int. Cl. A45D 20/40 (2006.01) | ||
| U.S. Cl. 392—407 [392/467; 219/532] | 4 Claims |
| 1. A heating unit comprising:
a plurality of radiant heaters;
a plurality of brackets on which the radiant heaters are mounted in a row;
a frame on which the brackets are mounted in a parallel arrangement and thereby the radiant heaters are mounted in a grid
configuration; and
a protective pipe that accommodates a sensor detecting a state of heating of a heated object,
wherein each of the radiant heaters includes: a support plate substantially having a rectangular shape; a pair of connection
terminals substantially perpendicularly extending, while having a space therebetween, from one surface of the support plate;
and a strip-shaped heater element arranged between the pair of connection terminals and covering the one surface of the support
plate,
wherein the connection terminals have connection portions projecting from the other surface of the support plated, and each
of the brackets has a terminal hole into which the connection portion is inserted, and
wherein recesses are formed at least at portions of the brackets adjacent to each other, the recesses opening toward each
other, and the protective pipe is disposed in an insertion hole that is defined by disposing the recesses so as to oppose
each other.
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