2. AN IMPROVED AND CONVERTIBLE DISPLAY CASE COMPRISING, IN COMBINATION: AN OPEN TOP CABINET HAVING FRONT AND BACK RIMS CONTAINING COLD AIR CIRCULATION CHANNELS; A SUPPORTING SHELF WITHIN SAID CABINET BELOW THE LEVEL OF SAID RIMS; A REMOVABLE CANOPY SUPPORTABLE ABOVE SAID CABINET UPON SAID RIMS, SAID CANOPY INCLUDING AT LEAST A PAIR OF END FRAMES, PORTIONS OF WHICH EXTEND WITHIN SAID CABINET, ADJUSTABLE MEANS TO SUPPORT SAID END FRAMES UPON SAID FRONT AND AND BACK RIMS, HORIZONTAL FRAME MEMBERS CONNECTING SAID END FRAMES, A PLURALITY OF PANEL MEMBERS COVERING AT LEAST TWO EXTERIOR END FRAMES AND TOP AND FRONT AREAS DEFINED BY SAID HORIZONTAL FRAME MEMBERS THEREBETWEEN, THE BOTTOM EDGE OF THE FRONT PANEL SITUATED SO AS TO EXTEND WITHIN SAID CABINET WHILE LEAVING EXPOSED THE AIR CIRCULATION CHANNEL IN THE FRONT RIM OF SAID CABINET; AND AN ADJUSTABLY INCLINED DISPLAY SHELF SET UPON SAID SUPPORTING SHELF BENEATH SAID CANOPY SO AS TO SLOPE DOWNWARDLY FROM BACK TO FRONT WITHIN SAID CABINET.