A polyhedron type display device includes: a plurality of liquid crystal panels connected to each other to constitute a polyhedral shape; a light source housing at a center of mass of the polyhedral shape; a light source unit accommodated in the light source housing, the light source unit emitting a light to supply the light to the plurality of liquid crystal panels; a light source supporting pillar connecting and supporting the light source housing and the plurality of liquid crystal panels; a structure supporting pedestal supporting the light source supporting pillar; a supporting panel supporting the plurality of liquid crystal panels; a radiating pillar connected to the light source unit and emitting a heat of the light source unit; and a protecting cover covering and protecting the radiating pillar.