Operation state display device and operation state display method for setup changing in board manufacturing

An operation state display device configured to display an operation state of a board production facility in which a board is sequentially conveyed to multiple board work machines, which are configured to perform predetermined board work on the board, and the board work is sequentially performed to produce a board product, the device comprising:

• an processor configured to acquire an execution time zone in which setup changing work required for switching a type of the board product to be produced is performed, for each board work machine, based on production information acquired by the board production facility during production of the board product;
• and
• a display section configured to graphically display at least one of the execution time zone for each of the multiple board work machines and the execution time zone for a predetermined board work machine of the board production facility in time series,
• wherein the processor is configured to acquire, as the execution time zone, a time zone from a time when a last board of the board product to be produced in first production before the type of the board product is switched is carried out to a time when a predetermined number of initial boards of the board product to be produced in second production after the type of the board product is switched are carried in or carried out.