Back-lighted display panel for coolers

In combination, a freezer including an evaporator-dissipated-heat radiating panel, and a back-lighted illuminated sign arranged adjacent said panel heat-radiating freezer , wherein the improvement comprises:

• a back-lighted illuminated sign comprising a vented light sign cabinet having a light-transmitting front panel, with two side panels, a top panel, a bottom panel, and a rear cabinet panel enclosing a cabinet interior having a light source contained therein;
• and wherein said bottom panel includes passive vent means for admitting a thermally-induced draw of cooler ambient air flow there through into said cabinet's interior;
• and wherein said rear cabinet panel includes vent means arranged adjacent said top panel, for exhausting thermally-induced air flow, at a first temperature, from said cabinet's interior;
• and wherein said cabinet includes spacer means for spacing said cabinet from said adjacent heat-radiating freezer panel in chimney defining relation between said rear cabinet panel and said heat radiating freezer panel with ambient air flow admitting and air flow exhausting openings at the lower and upper ends, respectively, of said chimney;
• wherein said chimney is thereby adapted to channel a secondary thermally-induced air flow, having a second temperature lower than said first temperature, between said rear cabinet panel and said heat-radiating freezer panel.