Heat exchanger assembly for an electronic display

A heat exchanger assembly for cooling power modules having bricks, the assembly comprising:

• a plurality of heat exchanger layers placed within a plenum where an outer layer is placed in conductive thermal communication with the power module brick;
• a plurality of gaseous pathways defined by the space between each layer where the pathways alternate between an external air pathway that carries air from outside of the plenum, and a circulating gas pathway that carries a closed loop gas from inside the plenum;
• blocking elements placed within entrances to the circulating gas pathways;
• a cutout passing through several layers of the heat exchanger and placed adjacent to the blocking elements;
• a gasket sounding the cutout and placed only within external air pathways;
• a metallic plate positioned within each pathway and adjacent to the power module brick;
• an external air fan positioned to force external air through the external air pathways;
• and
• a circulating fan positioned to force circulating gas through the circulating gas pathways.

An assembly for cooling an electronic display having high power electrical assemblies and low power electrical assemblies, the cooling assembly comprising:

• a first sealed plenum containing the high power electrical assemblies and a first heat exchanger;
• a first circulating fan positioned for force circulating gas through the first heat exchanger and across the high power electrical assemblies;
• a second sealed plenum containing the low power electrical assemblies and a second heat exchanger;
• a second circulating fan positioned to force circulating gas through the second heat exchanger and across the low power electrical assemblies;
• a first external fan positioned to draw external air through the first heat exchanger;
• and
• a second external fan positioned to draw external air through the second heat exchanger.

An assembly for cooling an electronic display having a power module brick and a video player, the cooling assembly comprising:

• a housing containing the electronic display, power module brick, and a video player;
• a first inlet aperture along an edge of the housing;
• a second inlet aperture along an edge of the housing opposing the first inlet aperture;
• an exhaust aperture placed near a center of the housing;
• a portion of the housing which is placed behind the electronic display to define a gap;
• a display fan positioned to force external air through the gap;
• a first sealed plenum containing the power module brick and a first heat exchanger;
• a first circulating fan positioned for force circulating gas through the first heat exchanger and across the power module brick;
• a second sealed plenum containing the video player and a second heat exchanger;
• a second circulating fan positioned to force circulating gas through the second heat exchanger and across the video player;
• a first external fan positioned to draw external air through the first inlet aperture, first heat exchanger, and exhausted through the exhaust aperture;
• a second external fan positioned to draw external air through the second inlet aperture, second heat exchanger, and exhausting out of the exhaust aperture;
• and
• a series of metallic plates positioned within the first heat exchanger and substantially aligned with the power module brick.