SEAT DEVICE AND SEAT SYSTEM

A seat device according to one aspect of the present invention is provided with a seat body and a control unit. The seat body has a leg rest, a first operation part for operating the leg rest, and a first driving part that tilts the leg rest forward and backward on the basis of the input operation of the first operation part. The control unit has a first detection part and a control part. The first detection part detects the direction of a front seat positioned in the front row of the seat body. When the front seat faces at least the seat body, the control part invalidates, on the basis of theoutput from the first detection part, the command, issued from the first operation part, for operating the leg rest to tilt forward relative to the first driving part. 根据本发明的一个方式的座椅装置包括座椅主体和控制单元。所述座椅主体包括：搁腿架；第一操作部，用于操作所述搁腿架；以及第一驱动部，基于所述第一操作部的输入操作使所述搁腿架向前后方向掀动。所述控制单元包括第一检测部和控制部。所述第一检测部检测位于所述座椅主体前排的前排座椅的方向。所述控制部基于所述第一检测部的输出，在所述前排座椅至少与所述座椅主体面对面时，使从所述第一操作部发送到所述第一驱动部的所述搁腿架向前方的掀动操作指令无效。