| 摘要 |
A heater apparatus comprises a housing, and a plurality of heating elements provided in the housing. The housing includes a front side provided with a first heat outlet for spreading heat in a first direction, and a top provided with a second heat outlet for spreading heat in a second direction perpendicular to the first direction. Moreover, the second heat outlet is operable to switch between a closed state for blocking heat spread and an open state enabling heat spread in the second direction. |
