Patent ID: 8253716

Claim:
Apparatus comprising: a billboard sign including an electroluminescent (EL) portion to be illuminated by EL shining through the billboard sign and a portion other than the EL portion; at least one electroluminescent (EL) lamp sign affixed to the billboard sign to illuminate the electroluminescent portion, the EL lamp sign having at least one circuit to receive power to illuminate the at least one electroluminescent (EL) lamp sign and at least one portion of an outward facing surface of the billboard sign; a wiring harness coupled to the back of the at least one electroluminescent lamp (EL) sign; and a strain relief mechanism comprising a polymer member that is thicker than the at least one electroluminescent (EL) lamp sign, the strain relief mechanism adhered with a first adhesive to the back of the at least one electroluminescent (EL) lamp sign and the wiring harness to relieve strain on the at least one electroluminescent (EL) lamp sign from the wiring harness, wherein the EL lamp sign is affixed to the EL portion of the billboard sign with a high tack adhesive disposed around the first adhesive.