| 摘要 |
PROBLEM TO BE SOLVED: To lower the temperature of a peeping window. SOLUTION: The peeping window 3 is provided with a first window plate 5a formed by a rectangular parallelopiped transparent heat resisting glass larger than a grill opening 30f, a second window plate 5b, and an aluminum die-cast frame body 35 for covering the outer peripheries of the window plates 5a, 5b from above. By this arrangement, the air outside a container is sucked from a suction port 15 into the container by natural draft force generated by combustion heat of a burner 20 to flow through a gap between the first window plate 5a and the second window plate 5b, and the air is discharged to the outside of the container through a discharge port 33 between a cutout part 35a formed in the rear of a collar part 35a of the frame body 35 and a top plate 10. That is, the heating plates 5a, 5b and the window frame 35c heated by the combustion heat of the burner 20 can be cooled by the unheated air outside the container. COPYRIGHT: (C)2003,JPO
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