| 摘要 |
PROBLEM TO BE SOLVED: To provided a hot air heating equipment which can supply a hot air efficiently from the upper and lower sides of a board, circulate it appropriately in a casing, minimizing the variation of temperature of the hot air to be sprayed onto the printed circuit board, and control the temperature thereof. SOLUTION: Hot air heating units 8a and 9a are arranged on the upper and lower sides of the transferring surface 13 to transfer a board 1, and a fan 20, a heater 22, a nozzle 17 to spray a hot air heated by the heater 22 onto the board 1, and a hot air guide plate 25 to lead the hot air to a suction port 60 of the fan 20 through the nozzle 17 are provided in casings 12 of the hot air heating units 8a and 9a. Further, hot air suction parts 27a and 27b to lead hot air in the casings 12 to the suction port of the fan 20 without leaking it to the outside are provided on the front and rear end parts on the side of the printed circuit board transferring surface of the casings 12 in the upper and lower hot air heating units 8a-8c and 9a-9c.
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