Digital signage

A digital signage comprising:

• a display panel;
• a housing having the display panel provided at one surface, the housing having a closed inner space;
• a cooling unit provided in a top portion of the housing, the cooling unit including a first hole provided in a top portion of the cooling unit to suck in external air and a second hole provided in a bottom portion of the cooling unit to exhaust out the external air in a downward direction parallel to the display panel;
• a heat pipe that extends lengthwise in a vertical direction, the heat pipe having one end positioned in the inner space of the housing to be coupled to a back surface of the display and another end positioned in the cooling unit, with a liquid flowing therein to move heat;
• a heat suction part having one surface in contact with the other end of the heat pipe, the heat suction part extending lengthwise from one end of the cooling unit to another end of the cooling unit to enlarge a contact area with the air penetrating the cooling unit;
• a plurality of heat radiation fins that project from another surface of the heat suction part and spaced apart a predetermined distance from each other;
• and
• a driving circuit board coupled to a back surface of the heat pipe to control the display panel, wherein the closed inner space of the housing is partitioned from the cooling unit by a partition wall,
• wherein a horizontal cross section of the heat pipe has a rectangular shape having two long sides and two short sides, one long side contacting the display panel, another long side contacting the driving circuit board and one short side perpendicular to the display panel, and
• wherein the cooling unit includes a plurality of cooling fans arranged at regular intervals along a length of the cooling unit to enable air flow between the plurality of heat radiation fins such that the external air sucked into the first hole undergoes a heat exchange with the plurality of heat radiation fins and the external air is exhausted out downward through the second hole after the heat exchange.