Shielded window structure of numeral lock

A shielded window structure of a numeral lock comprising a row of numeral wheels disposed in a housing of the lock, the circumference of the numeral wheels being partially exposed to an outer side through at least one face of the housing for easy turning, a linking member being drivingly connected with internal components to control locking/unlocking of a hook member at one end of the housing, a window member being disposed on one side of the housing corresponding to the numeral wheels, the window member being formed with a row of windows through which the numerals of the numeral wheels are exposed, said shielded window structure being characterized in that the linking member being drivingly connected with an internal driving plate for driving internal locking components, whereby the driving plate is integrally assembled with the window member and when unlocked, the window member is synchronously displaced to disalign the windows from the unlocking number shown through the windows so as to shield the unlocking member of the numeral wheels.