Any permanent or temporary structure or part thereof, or any device attached, painted or represented, directly or indirectly, on a structure or other surface that shall display or include any letter, word, insignia, flag or representation used as, or which is in the nature of, an advertisement, announcement, visual communication or direction, or which is designed to attract the eye or bring the subject to the attention of the public. No other type, size or illumination of sign is permitted than as provided under the provisions of §§
405-40 to
405-44, inclusive.