The blaze device 10 includes a blaze device main body 11, a blaze head 12, and a removal laser head 13, and joins the side panel 14 and the roof panel 15. The blaze device main body 11 is attached to the arm 17a of the robot 17. By driving the robot 17, the blaze device 10 moves in the traveling direction D1. The blaze laser beam 43a emitted from the blaze laser beam irradiation unit 43 is reflected by the head body mirror 46 and the blaze unit mirror 51, and is irradiated to the wire 48. The removal laser light 72a emitted from the removal laser light irradiation unit 72 is reflected by the first mirror 73 and the galvano mirror 74, and is irradiated to the portion of the roof panel 15 to which foreign matter is attached.
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