| 摘要 |
A burner (19) is arranged in proximity to one side of a frame (13) rather than at a central portion thereof. The frame has a front plate (5) provided with a hot air outlet (7), which is formed so as to laterally extend to a region of the front plate of the frame corresponding to a fuel tank. A duct structure (33) includes a first side wall (47) which is so inclined that a distance between a first front side wall portion (47b) thereof and the hot air outlet is gradually reduced. The duct structure also includes a second side wall (49) including a second front side wall portion (49b) constitued by a first guide (50a) and a second guide (50b). The first and second guides are formed by subjecting a single metal plate to bending so that they cooperate with each other to define a curved configuration in cross section of which a top is directed inwardly of the frame. <IMAGE> |
