An operator's seat for heavy equipment having optimized switch
arrangements for controlling the equipment is provided, in which
arrangements of various kinds of switches and components of operating
devices that are frequently used by an operator in the seat due to the
characteristic of the equipment are integrated within a radius that an
operator's hand reaches (i.e. in a hand arm operation zone), and thus
physical inconvenience and fatigue that the operator who repeatedly
operates working devices for a long time suffers can be reduced. The
operator's seat for heavy equipment includes a switch instrument
installed within a radius that a hand of an operator sitting in the
operator's seat reaches, a control lever mounted on a specified position
of the switch instrument to control operations of working devices, and
switches arranged on the switch instrument in closest proximity to the
control lever so that the operator in the operator's seat can operate the
switches in the closest position in which the operator does not invade a
control stroke zone of the control lever.