초록 ▼

A generally planar base panel member has mounted to its back face a pair of laterally spaced apart chambers whose open fronts are covered by the panel. A pair of electrical receptacles in each chamber are arranged in alignment with apertures in the base panel. First and second front panels each have

A generally planar base panel member has mounted to its back face a pair of laterally spaced apart chambers whose open fronts are covered by the panel. A pair of electrical receptacles in each chamber are arranged in alignment with apertures in the base panel. First and second front panels each have a neon tubing configuration mounted on a front side of the panel with the electric end terminals at opposite ends of the tubing configurations projecting through holes in the front panels so that when the front panels are juxtaposed to the front of the base panel the neon tube terminals plug into the receptacles. A power supply for neon tubing is mounted to the back face of the base panel member. The neon tubing configurations on the individual front panels when plugged into the receptacles form a series circuit which connects across the high voltage output terminals of the power supply.

대표청구항 ▼

[ I claim:] [1.] An interchangeable neon sign comprising:a base member having a front and a rear and a pair of apertures;at least a first set of two laterally spaced apart electrical receptacles mounted to the rear of said base member in alignment with said apertures,a neon tubing power supply suppo

[ I claim:] [1.] An interchangeable neon sign comprising:a base member having a front and a rear and a pair of apertures;at least a first set of two laterally spaced apart electrical receptacles mounted to the rear of said base member in alignment with said apertures,a neon tubing power supply supported by said base member, said power supply having output terminals connected, respectively, to said first set of two electrical receptacles,a first front panel having front and rear surfaces and a neon tubing configuration mounted to said front surface to face away from said base member, the tubing configuration having opposite end terminals projecting rearwardly of said rear surface and spaced apart by a same distance as are the first set of two electrical receptacles to provide for said end terminals to plug, respectively, into said first set of two electrical receptacles when said first front panel is juxtaposed to said base member for said tubing configuration to form a closed circuit connecting said opposite end terminals of the neon tubing configuration to said output terminals of said power supply, and,means for latching said first front panel to said base member which comprises:a plurality of latch keys each including an axially extending shank having a head and two prongs extending radially from said shank with a fixed angle between the prongs, said prongs having radial lengths and having narrow widths providing for the prongs to pass through an elongated keyhole in said first front panel and an elongated keyhole in said base member with clearance concurrently, said keyholes having widths slightly greater than the widths of the prongs, rotation of said shank after said prongs have passed through the keyhole in the base member causing said prongs to extend crosswise of the width of said keyhole in the base member and said head to abut said first front panel to prevent said first front panel from separating from the base member.