(6) A Sandwich Board sign shall not be a nuisance nor interfere with normal pedestrian traffic. (7) A Sandwich Board sign shall only be displayed during the business hours of the premises. (8) A Sandwich Board sign shall not be illuminated. 4.7 Promotional Signs (1) Promotional signs are permitted in the form of a portable sign, a temporary fascia sign, a temporary. freestanding sign or 4 balloon type sign. (2) Promotional signs may only advertise a new business premise or a change in use_or trade name of a business premise. . . . A promotional sign may be displayed for not more than thirty days in any calendar year. A promotional sign shall not exceed 3 m* (33.0 sq. ft.) in area per face. ; | No portable promotional sign shall be located on. a: street, right of way, other public place, or encroach upon other properties. , . 4.8 Balloon Signs | se The inflating gas in a balloon sign shall be hot air. No other gases are permitted. The balloon shall be secure anchored to the base and the base shall be securely anchored to the surface on which it rests. The maximum permitted height of a balloon sign is 8.0 m; (26.2 ft.) above the pase of the supporting. structure « : A balloon sign may only be displayed on a parcel for a maximum of thirty days in any calendar year. A balloon sign shall be mounted in such a location and manner that the collapse of the unit will not affect an access route or public right of way. 7 Balloon signs may be illuminated but may not contain flashing, lights or animation devices, or vary intensity of lighting. Illumination shall be from a. steady light source directed at the face of the siga