A household appliance , comprising: a chamber ; a camera ; a door body movably connected to a front part of the chamber , a first air duct being defined in the door body , and the camera being located in the first air duct ; and a heat dissipation device mounted in the door body and supplying air into the first air duct to dissipate heat for the door body and the camera , wherein the heat dissipation device comprises: a first bracket comprising a first air duct member , an air outlet being defined in the first air duct member , an air outlet grid being disposed at the air outlet ; and a first fan being mounted on the door body by means of the first bracket , characterized in that two first fans are provided; the first air duct member has a first ventilation passage , a second ventilation passage , and a connecting ventilation passage , the connecting ventilation passage being in communication with the first ventilation passage , the second ventilation passage , and the air outlet ; one of the two first fans is in communication with the first ventilation passage , and another one of the two first fans is in communication with the second ventilation passage ; and the first ventilation passage is obliquely communicated with the connecting ventilation passage , and the second ventilation passage is horizontally communicated with the connecting ventilation passage . a chamber ; a camera ; a door body movably connected to a front part of the chamber , a first air duct being defined in the door body , and the camera being located in the first air duct ; and a heat dissipation device mounted in the door body and supplying air into the first air duct to dissipate heat for the door body and the camera , wherein the heat dissipation device comprises: a first bracket comprising a first air duct member , an air outlet being defined in the first air duct member , an air outlet grid being disposed at the air outlet ; and a first fan being mounted on the door body by means of the first bracket , characterized in that two first fans are provided; the first air duct member has a first ventilation passage , a second ventilation passage , and a connecting ventilation passage , the connecting ventilation passage being in communication with the first ventilation passage , the second ventilation passage , and the air outlet ; one of the two first fans is in communication with the first ventilation passage , and another one of the two first fans is in communication with the second ventilation passage ; and the first ventilation passage is obliquely communicated with the connecting ventilation passage , and the second ventilation passage is horizontally communicated with the connecting ventilation passage . a first bracket comprising a first air duct member , an air outlet being defined in the first air duct member , an air outlet grid being disposed at the air outlet ; and a first fan being mounted on the door body by means of the first bracket , characterized in that two first fans are provided; the first air duct member has a first ventilation passage , a second ventilation passage , and a connecting ventilation passage , the connecting ventilation passage being in communication with the first ventilation passage , the second ventilation passage , and the air outlet ; one of the two first fans is in communication with the first ventilation passage , and another one of the two first fans is in communication with the second ventilation passage ; and the first ventilation passage is obliquely communicated with the connecting ventilation passage , and the second ventilation passage is horizontally communicated with the connecting ventilation passage . <EOS>