It shall be the duty of the owner or occupant in charge of any building or hall used as an assembly hall with accommodations for one hundred (100) persons or more in which theatricals, shows, amusements, lectures or other entertainments are offered, operated or presented to provide and place a sign, on which the word "Exit" shall appear in letters six inches (6") high, over every door or other opening from such hall to every means of egress therefrom, and a light with a red globe shall be provided at or over such sign, which light shall be independent of all other lights in the hall and shall be kept burning during the entire period that such hall is open to the public and until the audience has left the hall. (1972 Code § 115.505)